libzfs_dataset.c revision 290757
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 sun 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 /* !sun */ 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 /* !sun */ 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 1407 /* 1408 * If this is an existing volume, and someone is setting the volsize, 1409 * make sure that it matches the reservation, or add it if necessary. 1410 */ 1411 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 1412 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 1413 return (-1); 1414 old_reservation = zfs_prop_get_int(zhp, resv_prop); 1415 if ((zvol_volsize_to_reservation(old_volsize, zhp->zfs_props) != 1416 old_reservation) || nvlist_lookup_uint64(nvl, 1417 zfs_prop_to_name(resv_prop), &new_reservation) != ENOENT) { 1418 return (0); 1419 } 1420 if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1421 &new_volsize) != 0) 1422 return (-1); 1423 new_reservation = zvol_volsize_to_reservation(new_volsize, 1424 zhp->zfs_props); 1425 if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop), 1426 new_reservation) != 0) { 1427 (void) no_memory(zhp->zfs_hdl); 1428 return (-1); 1429 } 1430 return (1); 1431} 1432 1433void 1434zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err, 1435 char *errbuf) 1436{ 1437 switch (err) { 1438 1439 case ENOSPC: 1440 /* 1441 * For quotas and reservations, ENOSPC indicates 1442 * something different; setting a quota or reservation 1443 * doesn't use any disk space. 1444 */ 1445 switch (prop) { 1446 case ZFS_PROP_QUOTA: 1447 case ZFS_PROP_REFQUOTA: 1448 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1449 "size is less than current used or " 1450 "reserved space")); 1451 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1452 break; 1453 1454 case ZFS_PROP_RESERVATION: 1455 case ZFS_PROP_REFRESERVATION: 1456 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1457 "size is greater than available space")); 1458 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1459 break; 1460 1461 default: 1462 (void) zfs_standard_error(hdl, err, errbuf); 1463 break; 1464 } 1465 break; 1466 1467 case EBUSY: 1468 (void) zfs_standard_error(hdl, EBUSY, errbuf); 1469 break; 1470 1471 case EROFS: 1472 (void) zfs_error(hdl, EZFS_DSREADONLY, errbuf); 1473 break; 1474 1475 case ENOTSUP: 1476 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1477 "pool and or dataset must be upgraded to set this " 1478 "property or value")); 1479 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 1480 break; 1481 1482 case ERANGE: 1483 case EDOM: 1484 if (prop == ZFS_PROP_COMPRESSION || 1485 prop == ZFS_PROP_RECORDSIZE) { 1486 (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1487 "property setting is not allowed on " 1488 "bootable datasets")); 1489 (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); 1490 } else if (prop == ZFS_PROP_CHECKSUM || 1491 prop == ZFS_PROP_DEDUP) { 1492 (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1493 "property setting is not allowed on " 1494 "root pools")); 1495 (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); 1496 } else { 1497 (void) zfs_standard_error(hdl, err, errbuf); 1498 } 1499 break; 1500 1501 case EINVAL: 1502 if (prop == ZPROP_INVAL) { 1503 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1504 } else { 1505 (void) zfs_standard_error(hdl, err, errbuf); 1506 } 1507 break; 1508 1509 case EOVERFLOW: 1510 /* 1511 * This platform can't address a volume this big. 1512 */ 1513#ifdef _ILP32 1514 if (prop == ZFS_PROP_VOLSIZE) { 1515 (void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf); 1516 break; 1517 } 1518#endif 1519 /* FALLTHROUGH */ 1520 default: 1521 (void) zfs_standard_error(hdl, err, errbuf); 1522 } 1523} 1524 1525/* 1526 * Given a property name and value, set the property for the given dataset. 1527 */ 1528int 1529zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) 1530{ 1531 zfs_cmd_t zc = { 0 }; 1532 int ret = -1; 1533 prop_changelist_t *cl = NULL; 1534 char errbuf[1024]; 1535 libzfs_handle_t *hdl = zhp->zfs_hdl; 1536 nvlist_t *nvl = NULL, *realprops; 1537 zfs_prop_t prop; 1538 boolean_t do_prefix = B_TRUE; 1539 int added_resv; 1540 1541 (void) snprintf(errbuf, sizeof (errbuf), 1542 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 1543 zhp->zfs_name); 1544 1545 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 || 1546 nvlist_add_string(nvl, propname, propval) != 0) { 1547 (void) no_memory(hdl); 1548 goto error; 1549 } 1550 1551 if ((realprops = zfs_valid_proplist(hdl, zhp->zfs_type, nvl, 1552 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, errbuf)) == NULL) 1553 goto error; 1554 1555 nvlist_free(nvl); 1556 nvl = realprops; 1557 1558 prop = zfs_name_to_prop(propname); 1559 1560 /* We don't support those properties on FreeBSD. */ 1561 switch (prop) { 1562 case ZFS_PROP_DEVICES: 1563 case ZFS_PROP_ISCSIOPTIONS: 1564 case ZFS_PROP_XATTR: 1565 case ZFS_PROP_VSCAN: 1566 case ZFS_PROP_NBMAND: 1567 case ZFS_PROP_MLSLABEL: 1568 (void) snprintf(errbuf, sizeof (errbuf), 1569 "property '%s' not supported on FreeBSD", propname); 1570 ret = zfs_error(hdl, EZFS_PERM, errbuf); 1571 goto error; 1572 } 1573 1574 if (prop == ZFS_PROP_VOLSIZE) { 1575 if ((added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1) 1576 goto error; 1577 } 1578 1579 if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) 1580 goto error; 1581 1582 if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { 1583 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1584 "child dataset with inherited mountpoint is used " 1585 "in a non-global zone")); 1586 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1587 goto error; 1588 } 1589 1590 /* 1591 * We don't want to unmount & remount the dataset when changing 1592 * its canmount property to 'on' or 'noauto'. We only use 1593 * the changelist logic to unmount when setting canmount=off. 1594 */ 1595 if (prop == ZFS_PROP_CANMOUNT) { 1596 uint64_t idx; 1597 int err = zprop_string_to_index(prop, propval, &idx, 1598 ZFS_TYPE_DATASET); 1599 if (err == 0 && idx != ZFS_CANMOUNT_OFF) 1600 do_prefix = B_FALSE; 1601 } 1602 1603 if (do_prefix && (ret = changelist_prefix(cl)) != 0) 1604 goto error; 1605 1606 /* 1607 * Execute the corresponding ioctl() to set this property. 1608 */ 1609 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1610 1611 if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) 1612 goto error; 1613 1614 ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1615 1616 if (ret != 0) { 1617 zfs_setprop_error(hdl, prop, errno, errbuf); 1618 if (added_resv && errno == ENOSPC) { 1619 /* clean up the volsize property we tried to set */ 1620 uint64_t old_volsize = zfs_prop_get_int(zhp, 1621 ZFS_PROP_VOLSIZE); 1622 nvlist_free(nvl); 1623 zcmd_free_nvlists(&zc); 1624 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) 1625 goto error; 1626 if (nvlist_add_uint64(nvl, 1627 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1628 old_volsize) != 0) 1629 goto error; 1630 if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) 1631 goto error; 1632 (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1633 } 1634 } else { 1635 if (do_prefix) 1636 ret = changelist_postfix(cl); 1637 1638 /* 1639 * Refresh the statistics so the new property value 1640 * is reflected. 1641 */ 1642 if (ret == 0) 1643 (void) get_stats(zhp); 1644 } 1645 1646error: 1647 nvlist_free(nvl); 1648 zcmd_free_nvlists(&zc); 1649 if (cl) 1650 changelist_free(cl); 1651 return (ret); 1652} 1653 1654/* 1655 * Given a property, inherit the value from the parent dataset, or if received 1656 * is TRUE, revert to the received value, if any. 1657 */ 1658int 1659zfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received) 1660{ 1661 zfs_cmd_t zc = { 0 }; 1662 int ret; 1663 prop_changelist_t *cl; 1664 libzfs_handle_t *hdl = zhp->zfs_hdl; 1665 char errbuf[1024]; 1666 zfs_prop_t prop; 1667 1668 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 1669 "cannot inherit %s for '%s'"), propname, zhp->zfs_name); 1670 1671 zc.zc_cookie = received; 1672 if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) { 1673 /* 1674 * For user properties, the amount of work we have to do is very 1675 * small, so just do it here. 1676 */ 1677 if (!zfs_prop_user(propname)) { 1678 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1679 "invalid property")); 1680 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 1681 } 1682 1683 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1684 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1685 1686 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc) != 0) 1687 return (zfs_standard_error(hdl, errno, errbuf)); 1688 1689 return (0); 1690 } 1691 1692 /* 1693 * Verify that this property is inheritable. 1694 */ 1695 if (zfs_prop_readonly(prop)) 1696 return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf)); 1697 1698 if (!zfs_prop_inheritable(prop) && !received) 1699 return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf)); 1700 1701 /* 1702 * Check to see if the value applies to this type 1703 */ 1704 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 1705 return (zfs_error(hdl, EZFS_PROPTYPE, errbuf)); 1706 1707 /* 1708 * Normalize the name, to get rid of shorthand abbreviations. 1709 */ 1710 propname = zfs_prop_to_name(prop); 1711 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1712 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1713 1714 if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID && 1715 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 1716 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1717 "dataset is used in a non-global zone")); 1718 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 1719 } 1720 1721 /* 1722 * Determine datasets which will be affected by this change, if any. 1723 */ 1724 if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) 1725 return (-1); 1726 1727 if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { 1728 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1729 "child dataset with inherited mountpoint is used " 1730 "in a non-global zone")); 1731 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1732 goto error; 1733 } 1734 1735 if ((ret = changelist_prefix(cl)) != 0) 1736 goto error; 1737 1738 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc)) != 0) { 1739 return (zfs_standard_error(hdl, errno, errbuf)); 1740 } else { 1741 1742 if ((ret = changelist_postfix(cl)) != 0) 1743 goto error; 1744 1745 /* 1746 * Refresh the statistics so the new property is reflected. 1747 */ 1748 (void) get_stats(zhp); 1749 } 1750 1751error: 1752 changelist_free(cl); 1753 return (ret); 1754} 1755 1756/* 1757 * True DSL properties are stored in an nvlist. The following two functions 1758 * extract them appropriately. 1759 */ 1760static uint64_t 1761getprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 1762{ 1763 nvlist_t *nv; 1764 uint64_t value; 1765 1766 *source = NULL; 1767 if (nvlist_lookup_nvlist(zhp->zfs_props, 1768 zfs_prop_to_name(prop), &nv) == 0) { 1769 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); 1770 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 1771 } else { 1772 verify(!zhp->zfs_props_table || 1773 zhp->zfs_props_table[prop] == B_TRUE); 1774 value = zfs_prop_default_numeric(prop); 1775 *source = ""; 1776 } 1777 1778 return (value); 1779} 1780 1781static const char * 1782getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 1783{ 1784 nvlist_t *nv; 1785 const char *value; 1786 1787 *source = NULL; 1788 if (nvlist_lookup_nvlist(zhp->zfs_props, 1789 zfs_prop_to_name(prop), &nv) == 0) { 1790 value = fnvlist_lookup_string(nv, ZPROP_VALUE); 1791 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 1792 } else { 1793 verify(!zhp->zfs_props_table || 1794 zhp->zfs_props_table[prop] == B_TRUE); 1795 value = zfs_prop_default_string(prop); 1796 *source = ""; 1797 } 1798 1799 return (value); 1800} 1801 1802static boolean_t 1803zfs_is_recvd_props_mode(zfs_handle_t *zhp) 1804{ 1805 return (zhp->zfs_props == zhp->zfs_recvd_props); 1806} 1807 1808static void 1809zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1810{ 1811 *cookie = (uint64_t)(uintptr_t)zhp->zfs_props; 1812 zhp->zfs_props = zhp->zfs_recvd_props; 1813} 1814 1815static void 1816zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1817{ 1818 zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie; 1819 *cookie = 0; 1820} 1821 1822/* 1823 * Internal function for getting a numeric property. Both zfs_prop_get() and 1824 * zfs_prop_get_int() are built using this interface. 1825 * 1826 * Certain properties can be overridden using 'mount -o'. In this case, scan 1827 * the contents of the /etc/mnttab entry, searching for the appropriate options. 1828 * If they differ from the on-disk values, report the current values and mark 1829 * the source "temporary". 1830 */ 1831static int 1832get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, 1833 char **source, uint64_t *val) 1834{ 1835 zfs_cmd_t zc = { 0 }; 1836 nvlist_t *zplprops = NULL; 1837 struct mnttab mnt; 1838 char *mntopt_on = NULL; 1839 char *mntopt_off = NULL; 1840 boolean_t received = zfs_is_recvd_props_mode(zhp); 1841 1842 *source = NULL; 1843 1844 switch (prop) { 1845 case ZFS_PROP_ATIME: 1846 mntopt_on = MNTOPT_ATIME; 1847 mntopt_off = MNTOPT_NOATIME; 1848 break; 1849 1850 case ZFS_PROP_DEVICES: 1851 mntopt_on = MNTOPT_DEVICES; 1852 mntopt_off = MNTOPT_NODEVICES; 1853 break; 1854 1855 case ZFS_PROP_EXEC: 1856 mntopt_on = MNTOPT_EXEC; 1857 mntopt_off = MNTOPT_NOEXEC; 1858 break; 1859 1860 case ZFS_PROP_READONLY: 1861 mntopt_on = MNTOPT_RO; 1862 mntopt_off = MNTOPT_RW; 1863 break; 1864 1865 case ZFS_PROP_SETUID: 1866 mntopt_on = MNTOPT_SETUID; 1867 mntopt_off = MNTOPT_NOSETUID; 1868 break; 1869 1870 case ZFS_PROP_XATTR: 1871 mntopt_on = MNTOPT_XATTR; 1872 mntopt_off = MNTOPT_NOXATTR; 1873 break; 1874 1875 case ZFS_PROP_NBMAND: 1876 mntopt_on = MNTOPT_NBMAND; 1877 mntopt_off = MNTOPT_NONBMAND; 1878 break; 1879 } 1880 1881 /* 1882 * Because looking up the mount options is potentially expensive 1883 * (iterating over all of /etc/mnttab), we defer its calculation until 1884 * we're looking up a property which requires its presence. 1885 */ 1886 if (!zhp->zfs_mntcheck && 1887 (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) { 1888 libzfs_handle_t *hdl = zhp->zfs_hdl; 1889 struct mnttab entry; 1890 1891 if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) { 1892 zhp->zfs_mntopts = zfs_strdup(hdl, 1893 entry.mnt_mntopts); 1894 if (zhp->zfs_mntopts == NULL) 1895 return (-1); 1896 } 1897 1898 zhp->zfs_mntcheck = B_TRUE; 1899 } 1900 1901 if (zhp->zfs_mntopts == NULL) 1902 mnt.mnt_mntopts = ""; 1903 else 1904 mnt.mnt_mntopts = zhp->zfs_mntopts; 1905 1906 switch (prop) { 1907 case ZFS_PROP_ATIME: 1908 case ZFS_PROP_DEVICES: 1909 case ZFS_PROP_EXEC: 1910 case ZFS_PROP_READONLY: 1911 case ZFS_PROP_SETUID: 1912 case ZFS_PROP_XATTR: 1913 case ZFS_PROP_NBMAND: 1914 *val = getprop_uint64(zhp, prop, source); 1915 1916 if (received) 1917 break; 1918 1919 if (hasmntopt(&mnt, mntopt_on) && !*val) { 1920 *val = B_TRUE; 1921 if (src) 1922 *src = ZPROP_SRC_TEMPORARY; 1923 } else if (hasmntopt(&mnt, mntopt_off) && *val) { 1924 *val = B_FALSE; 1925 if (src) 1926 *src = ZPROP_SRC_TEMPORARY; 1927 } 1928 break; 1929 1930 case ZFS_PROP_CANMOUNT: 1931 case ZFS_PROP_VOLSIZE: 1932 case ZFS_PROP_QUOTA: 1933 case ZFS_PROP_REFQUOTA: 1934 case ZFS_PROP_RESERVATION: 1935 case ZFS_PROP_REFRESERVATION: 1936 case ZFS_PROP_FILESYSTEM_LIMIT: 1937 case ZFS_PROP_SNAPSHOT_LIMIT: 1938 case ZFS_PROP_FILESYSTEM_COUNT: 1939 case ZFS_PROP_SNAPSHOT_COUNT: 1940 *val = getprop_uint64(zhp, prop, source); 1941 1942 if (*source == NULL) { 1943 /* not default, must be local */ 1944 *source = zhp->zfs_name; 1945 } 1946 break; 1947 1948 case ZFS_PROP_MOUNTED: 1949 *val = (zhp->zfs_mntopts != NULL); 1950 break; 1951 1952 case ZFS_PROP_NUMCLONES: 1953 *val = zhp->zfs_dmustats.dds_num_clones; 1954 break; 1955 1956 case ZFS_PROP_VERSION: 1957 case ZFS_PROP_NORMALIZE: 1958 case ZFS_PROP_UTF8ONLY: 1959 case ZFS_PROP_CASE: 1960 if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) || 1961 zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 1962 return (-1); 1963 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1964 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) { 1965 zcmd_free_nvlists(&zc); 1966 return (-1); 1967 } 1968 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 || 1969 nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop), 1970 val) != 0) { 1971 zcmd_free_nvlists(&zc); 1972 return (-1); 1973 } 1974 if (zplprops) 1975 nvlist_free(zplprops); 1976 zcmd_free_nvlists(&zc); 1977 break; 1978 1979 case ZFS_PROP_INCONSISTENT: 1980 *val = zhp->zfs_dmustats.dds_inconsistent; 1981 break; 1982 1983 default: 1984 switch (zfs_prop_get_type(prop)) { 1985 case PROP_TYPE_NUMBER: 1986 case PROP_TYPE_INDEX: 1987 *val = getprop_uint64(zhp, prop, source); 1988 /* 1989 * If we tried to use a default value for a 1990 * readonly property, it means that it was not 1991 * present. 1992 */ 1993 if (zfs_prop_readonly(prop) && 1994 *source != NULL && (*source)[0] == '\0') { 1995 *source = NULL; 1996 } 1997 break; 1998 1999 case PROP_TYPE_STRING: 2000 default: 2001 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 2002 "cannot get non-numeric property")); 2003 return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP, 2004 dgettext(TEXT_DOMAIN, "internal error"))); 2005 } 2006 } 2007 2008 return (0); 2009} 2010 2011/* 2012 * Calculate the source type, given the raw source string. 2013 */ 2014static void 2015get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source, 2016 char *statbuf, size_t statlen) 2017{ 2018 if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY) 2019 return; 2020 2021 if (source == NULL) { 2022 *srctype = ZPROP_SRC_NONE; 2023 } else if (source[0] == '\0') { 2024 *srctype = ZPROP_SRC_DEFAULT; 2025 } else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) { 2026 *srctype = ZPROP_SRC_RECEIVED; 2027 } else { 2028 if (strcmp(source, zhp->zfs_name) == 0) { 2029 *srctype = ZPROP_SRC_LOCAL; 2030 } else { 2031 (void) strlcpy(statbuf, source, statlen); 2032 *srctype = ZPROP_SRC_INHERITED; 2033 } 2034 } 2035 2036} 2037 2038int 2039zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf, 2040 size_t proplen, boolean_t literal) 2041{ 2042 zfs_prop_t prop; 2043 int err = 0; 2044 2045 if (zhp->zfs_recvd_props == NULL) 2046 if (get_recvd_props_ioctl(zhp) != 0) 2047 return (-1); 2048 2049 prop = zfs_name_to_prop(propname); 2050 2051 if (prop != ZPROP_INVAL) { 2052 uint64_t cookie; 2053 if (!nvlist_exists(zhp->zfs_recvd_props, propname)) 2054 return (-1); 2055 zfs_set_recvd_props_mode(zhp, &cookie); 2056 err = zfs_prop_get(zhp, prop, propbuf, proplen, 2057 NULL, NULL, 0, literal); 2058 zfs_unset_recvd_props_mode(zhp, &cookie); 2059 } else { 2060 nvlist_t *propval; 2061 char *recvdval; 2062 if (nvlist_lookup_nvlist(zhp->zfs_recvd_props, 2063 propname, &propval) != 0) 2064 return (-1); 2065 verify(nvlist_lookup_string(propval, ZPROP_VALUE, 2066 &recvdval) == 0); 2067 (void) strlcpy(propbuf, recvdval, proplen); 2068 } 2069 2070 return (err == 0 ? 0 : -1); 2071} 2072 2073static int 2074get_clones_string(zfs_handle_t *zhp, char *propbuf, size_t proplen) 2075{ 2076 nvlist_t *value; 2077 nvpair_t *pair; 2078 2079 value = zfs_get_clones_nvl(zhp); 2080 if (value == NULL) 2081 return (-1); 2082 2083 propbuf[0] = '\0'; 2084 for (pair = nvlist_next_nvpair(value, NULL); pair != NULL; 2085 pair = nvlist_next_nvpair(value, pair)) { 2086 if (propbuf[0] != '\0') 2087 (void) strlcat(propbuf, ",", proplen); 2088 (void) strlcat(propbuf, nvpair_name(pair), proplen); 2089 } 2090 2091 return (0); 2092} 2093 2094struct get_clones_arg { 2095 uint64_t numclones; 2096 nvlist_t *value; 2097 const char *origin; 2098 char buf[ZFS_MAXNAMELEN]; 2099}; 2100 2101int 2102get_clones_cb(zfs_handle_t *zhp, void *arg) 2103{ 2104 struct get_clones_arg *gca = arg; 2105 2106 if (gca->numclones == 0) { 2107 zfs_close(zhp); 2108 return (0); 2109 } 2110 2111 if (zfs_prop_get(zhp, ZFS_PROP_ORIGIN, gca->buf, sizeof (gca->buf), 2112 NULL, NULL, 0, B_TRUE) != 0) 2113 goto out; 2114 if (strcmp(gca->buf, gca->origin) == 0) { 2115 fnvlist_add_boolean(gca->value, zfs_get_name(zhp)); 2116 gca->numclones--; 2117 } 2118 2119out: 2120 (void) zfs_iter_children(zhp, get_clones_cb, gca); 2121 zfs_close(zhp); 2122 return (0); 2123} 2124 2125nvlist_t * 2126zfs_get_clones_nvl(zfs_handle_t *zhp) 2127{ 2128 nvlist_t *nv, *value; 2129 2130 if (nvlist_lookup_nvlist(zhp->zfs_props, 2131 zfs_prop_to_name(ZFS_PROP_CLONES), &nv) != 0) { 2132 struct get_clones_arg gca; 2133 2134 /* 2135 * if this is a snapshot, then the kernel wasn't able 2136 * to get the clones. Do it by slowly iterating. 2137 */ 2138 if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) 2139 return (NULL); 2140 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, 0) != 0) 2141 return (NULL); 2142 if (nvlist_alloc(&value, NV_UNIQUE_NAME, 0) != 0) { 2143 nvlist_free(nv); 2144 return (NULL); 2145 } 2146 2147 gca.numclones = zfs_prop_get_int(zhp, ZFS_PROP_NUMCLONES); 2148 gca.value = value; 2149 gca.origin = zhp->zfs_name; 2150 2151 if (gca.numclones != 0) { 2152 zfs_handle_t *root; 2153 char pool[ZFS_MAXNAMELEN]; 2154 char *cp = pool; 2155 2156 /* get the pool name */ 2157 (void) strlcpy(pool, zhp->zfs_name, sizeof (pool)); 2158 (void) strsep(&cp, "/@"); 2159 root = zfs_open(zhp->zfs_hdl, pool, 2160 ZFS_TYPE_FILESYSTEM); 2161 2162 (void) get_clones_cb(root, &gca); 2163 } 2164 2165 if (gca.numclones != 0 || 2166 nvlist_add_nvlist(nv, ZPROP_VALUE, value) != 0 || 2167 nvlist_add_nvlist(zhp->zfs_props, 2168 zfs_prop_to_name(ZFS_PROP_CLONES), nv) != 0) { 2169 nvlist_free(nv); 2170 nvlist_free(value); 2171 return (NULL); 2172 } 2173 nvlist_free(nv); 2174 nvlist_free(value); 2175 verify(0 == nvlist_lookup_nvlist(zhp->zfs_props, 2176 zfs_prop_to_name(ZFS_PROP_CLONES), &nv)); 2177 } 2178 2179 verify(nvlist_lookup_nvlist(nv, ZPROP_VALUE, &value) == 0); 2180 2181 return (value); 2182} 2183 2184/* 2185 * Retrieve a property from the given object. If 'literal' is specified, then 2186 * numbers are left as exact values. Otherwise, numbers are converted to a 2187 * human-readable form. 2188 * 2189 * Returns 0 on success, or -1 on error. 2190 */ 2191int 2192zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, 2193 zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal) 2194{ 2195 char *source = NULL; 2196 uint64_t val; 2197 const char *str; 2198 const char *strval; 2199 boolean_t received = zfs_is_recvd_props_mode(zhp); 2200 2201 /* 2202 * Check to see if this property applies to our object 2203 */ 2204 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 2205 return (-1); 2206 2207 if (received && zfs_prop_readonly(prop)) 2208 return (-1); 2209 2210 if (src) 2211 *src = ZPROP_SRC_NONE; 2212 2213 switch (prop) { 2214 case ZFS_PROP_CREATION: 2215 /* 2216 * 'creation' is a time_t stored in the statistics. We convert 2217 * this into a string unless 'literal' is specified. 2218 */ 2219 { 2220 val = getprop_uint64(zhp, prop, &source); 2221 time_t time = (time_t)val; 2222 struct tm t; 2223 2224 if (literal || 2225 localtime_r(&time, &t) == NULL || 2226 strftime(propbuf, proplen, "%a %b %e %k:%M %Y", 2227 &t) == 0) 2228 (void) snprintf(propbuf, proplen, "%llu", val); 2229 } 2230 break; 2231 2232 case ZFS_PROP_MOUNTPOINT: 2233 /* 2234 * Getting the precise mountpoint can be tricky. 2235 * 2236 * - for 'none' or 'legacy', return those values. 2237 * - for inherited mountpoints, we want to take everything 2238 * after our ancestor and append it to the inherited value. 2239 * 2240 * If the pool has an alternate root, we want to prepend that 2241 * root to any values we return. 2242 */ 2243 2244 str = getprop_string(zhp, prop, &source); 2245 2246 if (str[0] == '/') { 2247 char buf[MAXPATHLEN]; 2248 char *root = buf; 2249 const char *relpath; 2250 2251 /* 2252 * If we inherit the mountpoint, even from a dataset 2253 * with a received value, the source will be the path of 2254 * the dataset we inherit from. If source is 2255 * ZPROP_SOURCE_VAL_RECVD, the received value is not 2256 * inherited. 2257 */ 2258 if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) { 2259 relpath = ""; 2260 } else { 2261 relpath = zhp->zfs_name + strlen(source); 2262 if (relpath[0] == '/') 2263 relpath++; 2264 } 2265 2266 if ((zpool_get_prop(zhp->zpool_hdl, 2267 ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL, 2268 B_FALSE)) || (strcmp(root, "-") == 0)) 2269 root[0] = '\0'; 2270 /* 2271 * Special case an alternate root of '/'. This will 2272 * avoid having multiple leading slashes in the 2273 * mountpoint path. 2274 */ 2275 if (strcmp(root, "/") == 0) 2276 root++; 2277 2278 /* 2279 * If the mountpoint is '/' then skip over this 2280 * if we are obtaining either an alternate root or 2281 * an inherited mountpoint. 2282 */ 2283 if (str[1] == '\0' && (root[0] != '\0' || 2284 relpath[0] != '\0')) 2285 str++; 2286 2287 if (relpath[0] == '\0') 2288 (void) snprintf(propbuf, proplen, "%s%s", 2289 root, str); 2290 else 2291 (void) snprintf(propbuf, proplen, "%s%s%s%s", 2292 root, str, relpath[0] == '@' ? "" : "/", 2293 relpath); 2294 } else { 2295 /* 'legacy' or 'none' */ 2296 (void) strlcpy(propbuf, str, proplen); 2297 } 2298 2299 break; 2300 2301 case ZFS_PROP_ORIGIN: 2302 str = getprop_string(zhp, prop, &source); 2303 if (str == NULL) 2304 return (-1); 2305 (void) strlcpy(propbuf, str, proplen); 2306 break; 2307 2308 case ZFS_PROP_CLONES: 2309 if (get_clones_string(zhp, propbuf, proplen) != 0) 2310 return (-1); 2311 break; 2312 2313 case ZFS_PROP_QUOTA: 2314 case ZFS_PROP_REFQUOTA: 2315 case ZFS_PROP_RESERVATION: 2316 case ZFS_PROP_REFRESERVATION: 2317 2318 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2319 return (-1); 2320 2321 /* 2322 * If quota or reservation is 0, we translate this into 'none' 2323 * (unless literal is set), and indicate that it's the default 2324 * value. Otherwise, we print the number nicely and indicate 2325 * that its set locally. 2326 */ 2327 if (val == 0) { 2328 if (literal) 2329 (void) strlcpy(propbuf, "0", proplen); 2330 else 2331 (void) strlcpy(propbuf, "none", proplen); 2332 } else { 2333 if (literal) 2334 (void) snprintf(propbuf, proplen, "%llu", 2335 (u_longlong_t)val); 2336 else 2337 zfs_nicenum(val, propbuf, proplen); 2338 } 2339 break; 2340 2341 case ZFS_PROP_FILESYSTEM_LIMIT: 2342 case ZFS_PROP_SNAPSHOT_LIMIT: 2343 case ZFS_PROP_FILESYSTEM_COUNT: 2344 case ZFS_PROP_SNAPSHOT_COUNT: 2345 2346 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2347 return (-1); 2348 2349 /* 2350 * If limit is UINT64_MAX, we translate this into 'none' (unless 2351 * literal is set), and indicate that it's the default value. 2352 * Otherwise, we print the number nicely and indicate that it's 2353 * set locally. 2354 */ 2355 if (literal) { 2356 (void) snprintf(propbuf, proplen, "%llu", 2357 (u_longlong_t)val); 2358 } else if (val == UINT64_MAX) { 2359 (void) strlcpy(propbuf, "none", proplen); 2360 } else { 2361 zfs_nicenum(val, propbuf, proplen); 2362 } 2363 break; 2364 2365 case ZFS_PROP_REFRATIO: 2366 case ZFS_PROP_COMPRESSRATIO: 2367 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2368 return (-1); 2369 (void) snprintf(propbuf, proplen, "%llu.%02llux", 2370 (u_longlong_t)(val / 100), 2371 (u_longlong_t)(val % 100)); 2372 break; 2373 2374 case ZFS_PROP_TYPE: 2375 switch (zhp->zfs_type) { 2376 case ZFS_TYPE_FILESYSTEM: 2377 str = "filesystem"; 2378 break; 2379 case ZFS_TYPE_VOLUME: 2380 str = "volume"; 2381 break; 2382 case ZFS_TYPE_SNAPSHOT: 2383 str = "snapshot"; 2384 break; 2385 case ZFS_TYPE_BOOKMARK: 2386 str = "bookmark"; 2387 break; 2388 default: 2389 abort(); 2390 } 2391 (void) snprintf(propbuf, proplen, "%s", str); 2392 break; 2393 2394 case ZFS_PROP_MOUNTED: 2395 /* 2396 * The 'mounted' property is a pseudo-property that described 2397 * whether the filesystem is currently mounted. Even though 2398 * it's a boolean value, the typical values of "on" and "off" 2399 * don't make sense, so we translate to "yes" and "no". 2400 */ 2401 if (get_numeric_property(zhp, ZFS_PROP_MOUNTED, 2402 src, &source, &val) != 0) 2403 return (-1); 2404 if (val) 2405 (void) strlcpy(propbuf, "yes", proplen); 2406 else 2407 (void) strlcpy(propbuf, "no", proplen); 2408 break; 2409 2410 case ZFS_PROP_NAME: 2411 /* 2412 * The 'name' property is a pseudo-property derived from the 2413 * dataset name. It is presented as a real property to simplify 2414 * consumers. 2415 */ 2416 (void) strlcpy(propbuf, zhp->zfs_name, proplen); 2417 break; 2418 2419 case ZFS_PROP_MLSLABEL: 2420 { 2421#ifdef sun 2422 m_label_t *new_sl = NULL; 2423 char *ascii = NULL; /* human readable label */ 2424 2425 (void) strlcpy(propbuf, 2426 getprop_string(zhp, prop, &source), proplen); 2427 2428 if (literal || (strcasecmp(propbuf, 2429 ZFS_MLSLABEL_DEFAULT) == 0)) 2430 break; 2431 2432 /* 2433 * Try to translate the internal hex string to 2434 * human-readable output. If there are any 2435 * problems just use the hex string. 2436 */ 2437 2438 if (str_to_label(propbuf, &new_sl, MAC_LABEL, 2439 L_NO_CORRECTION, NULL) == -1) { 2440 m_label_free(new_sl); 2441 break; 2442 } 2443 2444 if (label_to_str(new_sl, &ascii, M_LABEL, 2445 DEF_NAMES) != 0) { 2446 if (ascii) 2447 free(ascii); 2448 m_label_free(new_sl); 2449 break; 2450 } 2451 m_label_free(new_sl); 2452 2453 (void) strlcpy(propbuf, ascii, proplen); 2454 free(ascii); 2455#else /* !sun */ 2456 propbuf[0] = '\0'; 2457#endif /* !sun */ 2458 } 2459 break; 2460 2461 case ZFS_PROP_GUID: 2462 /* 2463 * GUIDs are stored as numbers, but they are identifiers. 2464 * We don't want them to be pretty printed, because pretty 2465 * printing mangles the ID into a truncated and useless value. 2466 */ 2467 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2468 return (-1); 2469 (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t)val); 2470 break; 2471 2472 default: 2473 switch (zfs_prop_get_type(prop)) { 2474 case PROP_TYPE_NUMBER: 2475 if (get_numeric_property(zhp, prop, src, 2476 &source, &val) != 0) 2477 return (-1); 2478 if (literal) 2479 (void) snprintf(propbuf, proplen, "%llu", 2480 (u_longlong_t)val); 2481 else 2482 zfs_nicenum(val, propbuf, proplen); 2483 break; 2484 2485 case PROP_TYPE_STRING: 2486 str = getprop_string(zhp, prop, &source); 2487 if (str == NULL) 2488 return (-1); 2489 (void) strlcpy(propbuf, str, proplen); 2490 break; 2491 2492 case PROP_TYPE_INDEX: 2493 if (get_numeric_property(zhp, prop, src, 2494 &source, &val) != 0) 2495 return (-1); 2496 if (zfs_prop_index_to_string(prop, val, &strval) != 0) 2497 return (-1); 2498 (void) strlcpy(propbuf, strval, proplen); 2499 break; 2500 2501 default: 2502 abort(); 2503 } 2504 } 2505 2506 get_source(zhp, src, source, statbuf, statlen); 2507 2508 return (0); 2509} 2510 2511/* 2512 * Utility function to get the given numeric property. Does no validation that 2513 * the given property is the appropriate type; should only be used with 2514 * hard-coded property types. 2515 */ 2516uint64_t 2517zfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop) 2518{ 2519 char *source; 2520 uint64_t val; 2521 2522 (void) get_numeric_property(zhp, prop, NULL, &source, &val); 2523 2524 return (val); 2525} 2526 2527int 2528zfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val) 2529{ 2530 char buf[64]; 2531 2532 (void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val); 2533 return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf)); 2534} 2535 2536/* 2537 * Similar to zfs_prop_get(), but returns the value as an integer. 2538 */ 2539int 2540zfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value, 2541 zprop_source_t *src, char *statbuf, size_t statlen) 2542{ 2543 char *source; 2544 2545 /* 2546 * Check to see if this property applies to our object 2547 */ 2548 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) { 2549 return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE, 2550 dgettext(TEXT_DOMAIN, "cannot get property '%s'"), 2551 zfs_prop_to_name(prop))); 2552 } 2553 2554 if (src) 2555 *src = ZPROP_SRC_NONE; 2556 2557 if (get_numeric_property(zhp, prop, src, &source, value) != 0) 2558 return (-1); 2559 2560 get_source(zhp, src, source, statbuf, statlen); 2561 2562 return (0); 2563} 2564 2565static int 2566idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser, 2567 char **domainp, idmap_rid_t *ridp) 2568{ 2569#ifdef sun 2570 idmap_get_handle_t *get_hdl = NULL; 2571 idmap_stat status; 2572 int err = EINVAL; 2573 2574 if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS) 2575 goto out; 2576 2577 if (isuser) { 2578 err = idmap_get_sidbyuid(get_hdl, id, 2579 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2580 } else { 2581 err = idmap_get_sidbygid(get_hdl, id, 2582 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2583 } 2584 if (err == IDMAP_SUCCESS && 2585 idmap_get_mappings(get_hdl) == IDMAP_SUCCESS && 2586 status == IDMAP_SUCCESS) 2587 err = 0; 2588 else 2589 err = EINVAL; 2590out: 2591 if (get_hdl) 2592 idmap_get_destroy(get_hdl); 2593 return (err); 2594#else /* !sun */ 2595 assert(!"invalid code path"); 2596 return (EINVAL); // silence compiler warning 2597#endif /* !sun */ 2598} 2599 2600/* 2601 * convert the propname into parameters needed by kernel 2602 * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829 2603 * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789 2604 */ 2605static int 2606userquota_propname_decode(const char *propname, boolean_t zoned, 2607 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp) 2608{ 2609 zfs_userquota_prop_t type; 2610 char *cp, *end; 2611 char *numericsid = NULL; 2612 boolean_t isuser; 2613 2614 domain[0] = '\0'; 2615 *ridp = 0; 2616 /* Figure out the property type ({user|group}{quota|space}) */ 2617 for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) { 2618 if (strncmp(propname, zfs_userquota_prop_prefixes[type], 2619 strlen(zfs_userquota_prop_prefixes[type])) == 0) 2620 break; 2621 } 2622 if (type == ZFS_NUM_USERQUOTA_PROPS) 2623 return (EINVAL); 2624 *typep = type; 2625 2626 isuser = (type == ZFS_PROP_USERQUOTA || 2627 type == ZFS_PROP_USERUSED); 2628 2629 cp = strchr(propname, '@') + 1; 2630 2631 if (strchr(cp, '@')) { 2632#ifdef sun 2633 /* 2634 * It's a SID name (eg "user@domain") that needs to be 2635 * turned into S-1-domainID-RID. 2636 */ 2637 int flag = 0; 2638 idmap_stat stat, map_stat; 2639 uid_t pid; 2640 idmap_rid_t rid; 2641 idmap_get_handle_t *gh = NULL; 2642 2643 stat = idmap_get_create(&gh); 2644 if (stat != IDMAP_SUCCESS) { 2645 idmap_get_destroy(gh); 2646 return (ENOMEM); 2647 } 2648 if (zoned && getzoneid() == GLOBAL_ZONEID) 2649 return (ENOENT); 2650 if (isuser) { 2651 stat = idmap_getuidbywinname(cp, NULL, flag, &pid); 2652 if (stat < 0) 2653 return (ENOENT); 2654 stat = idmap_get_sidbyuid(gh, pid, flag, &numericsid, 2655 &rid, &map_stat); 2656 } else { 2657 stat = idmap_getgidbywinname(cp, NULL, flag, &pid); 2658 if (stat < 0) 2659 return (ENOENT); 2660 stat = idmap_get_sidbygid(gh, pid, flag, &numericsid, 2661 &rid, &map_stat); 2662 } 2663 if (stat < 0) { 2664 idmap_get_destroy(gh); 2665 return (ENOENT); 2666 } 2667 stat = idmap_get_mappings(gh); 2668 idmap_get_destroy(gh); 2669 2670 if (stat < 0) { 2671 return (ENOENT); 2672 } 2673 if (numericsid == NULL) 2674 return (ENOENT); 2675 cp = numericsid; 2676 *ridp = rid; 2677 /* will be further decoded below */ 2678#else /* !sun */ 2679 return (ENOENT); 2680#endif /* !sun */ 2681 } 2682 2683 if (strncmp(cp, "S-1-", 4) == 0) { 2684 /* It's a numeric SID (eg "S-1-234-567-89") */ 2685 (void) strlcpy(domain, cp, domainlen); 2686 errno = 0; 2687 if (*ridp == 0) { 2688 cp = strrchr(domain, '-'); 2689 *cp = '\0'; 2690 cp++; 2691 *ridp = strtoull(cp, &end, 10); 2692 } else { 2693 end = ""; 2694 } 2695 if (numericsid) { 2696 free(numericsid); 2697 numericsid = NULL; 2698 } 2699 if (errno != 0 || *end != '\0') 2700 return (EINVAL); 2701 } else if (!isdigit(*cp)) { 2702 /* 2703 * It's a user/group name (eg "user") that needs to be 2704 * turned into a uid/gid 2705 */ 2706 if (zoned && getzoneid() == GLOBAL_ZONEID) 2707 return (ENOENT); 2708 if (isuser) { 2709 struct passwd *pw; 2710 pw = getpwnam(cp); 2711 if (pw == NULL) 2712 return (ENOENT); 2713 *ridp = pw->pw_uid; 2714 } else { 2715 struct group *gr; 2716 gr = getgrnam(cp); 2717 if (gr == NULL) 2718 return (ENOENT); 2719 *ridp = gr->gr_gid; 2720 } 2721 } else { 2722 /* It's a user/group ID (eg "12345"). */ 2723 uid_t id = strtoul(cp, &end, 10); 2724 idmap_rid_t rid; 2725 char *mapdomain; 2726 2727 if (*end != '\0') 2728 return (EINVAL); 2729 if (id > MAXUID) { 2730 /* It's an ephemeral ID. */ 2731 if (idmap_id_to_numeric_domain_rid(id, isuser, 2732 &mapdomain, &rid) != 0) 2733 return (ENOENT); 2734 (void) strlcpy(domain, mapdomain, domainlen); 2735 *ridp = rid; 2736 } else { 2737 *ridp = id; 2738 } 2739 } 2740 2741 ASSERT3P(numericsid, ==, NULL); 2742 return (0); 2743} 2744 2745static int 2746zfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname, 2747 uint64_t *propvalue, zfs_userquota_prop_t *typep) 2748{ 2749 int err; 2750 zfs_cmd_t zc = { 0 }; 2751 2752 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2753 2754 err = userquota_propname_decode(propname, 2755 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), 2756 typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid); 2757 zc.zc_objset_type = *typep; 2758 if (err) 2759 return (err); 2760 2761 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc); 2762 if (err) 2763 return (err); 2764 2765 *propvalue = zc.zc_cookie; 2766 return (0); 2767} 2768 2769int 2770zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname, 2771 uint64_t *propvalue) 2772{ 2773 zfs_userquota_prop_t type; 2774 2775 return (zfs_prop_get_userquota_common(zhp, propname, propvalue, 2776 &type)); 2777} 2778 2779int 2780zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname, 2781 char *propbuf, int proplen, boolean_t literal) 2782{ 2783 int err; 2784 uint64_t propvalue; 2785 zfs_userquota_prop_t type; 2786 2787 err = zfs_prop_get_userquota_common(zhp, propname, &propvalue, 2788 &type); 2789 2790 if (err) 2791 return (err); 2792 2793 if (literal) { 2794 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2795 } else if (propvalue == 0 && 2796 (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) { 2797 (void) strlcpy(propbuf, "none", proplen); 2798 } else { 2799 zfs_nicenum(propvalue, propbuf, proplen); 2800 } 2801 return (0); 2802} 2803 2804int 2805zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname, 2806 uint64_t *propvalue) 2807{ 2808 int err; 2809 zfs_cmd_t zc = { 0 }; 2810 const char *snapname; 2811 2812 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2813 2814 snapname = strchr(propname, '@') + 1; 2815 if (strchr(snapname, '@')) { 2816 (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); 2817 } else { 2818 /* snapname is the short name, append it to zhp's fsname */ 2819 char *cp; 2820 2821 (void) strlcpy(zc.zc_value, zhp->zfs_name, 2822 sizeof (zc.zc_value)); 2823 cp = strchr(zc.zc_value, '@'); 2824 if (cp != NULL) 2825 *cp = '\0'; 2826 (void) strlcat(zc.zc_value, "@", sizeof (zc.zc_value)); 2827 (void) strlcat(zc.zc_value, snapname, sizeof (zc.zc_value)); 2828 } 2829 2830 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SPACE_WRITTEN, &zc); 2831 if (err) 2832 return (err); 2833 2834 *propvalue = zc.zc_cookie; 2835 return (0); 2836} 2837 2838int 2839zfs_prop_get_written(zfs_handle_t *zhp, const char *propname, 2840 char *propbuf, int proplen, boolean_t literal) 2841{ 2842 int err; 2843 uint64_t propvalue; 2844 2845 err = zfs_prop_get_written_int(zhp, propname, &propvalue); 2846 2847 if (err) 2848 return (err); 2849 2850 if (literal) { 2851 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2852 } else { 2853 zfs_nicenum(propvalue, propbuf, proplen); 2854 } 2855 return (0); 2856} 2857 2858/* 2859 * Returns the name of the given zfs handle. 2860 */ 2861const char * 2862zfs_get_name(const zfs_handle_t *zhp) 2863{ 2864 return (zhp->zfs_name); 2865} 2866 2867/* 2868 * Returns the type of the given zfs handle. 2869 */ 2870zfs_type_t 2871zfs_get_type(const zfs_handle_t *zhp) 2872{ 2873 return (zhp->zfs_type); 2874} 2875 2876/* 2877 * Is one dataset name a child dataset of another? 2878 * 2879 * Needs to handle these cases: 2880 * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo" 2881 * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar" 2882 * Descendant? No. No. No. Yes. 2883 */ 2884static boolean_t 2885is_descendant(const char *ds1, const char *ds2) 2886{ 2887 size_t d1len = strlen(ds1); 2888 2889 /* ds2 can't be a descendant if it's smaller */ 2890 if (strlen(ds2) < d1len) 2891 return (B_FALSE); 2892 2893 /* otherwise, compare strings and verify that there's a '/' char */ 2894 return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0)); 2895} 2896 2897/* 2898 * Given a complete name, return just the portion that refers to the parent. 2899 * Will return -1 if there is no parent (path is just the name of the 2900 * pool). 2901 */ 2902static int 2903parent_name(const char *path, char *buf, size_t buflen) 2904{ 2905 char *slashp; 2906 2907 (void) strlcpy(buf, path, buflen); 2908 2909 if ((slashp = strrchr(buf, '/')) == NULL) 2910 return (-1); 2911 *slashp = '\0'; 2912 2913 return (0); 2914} 2915 2916/* 2917 * If accept_ancestor is false, then check to make sure that the given path has 2918 * a parent, and that it exists. If accept_ancestor is true, then find the 2919 * closest existing ancestor for the given path. In prefixlen return the 2920 * length of already existing prefix of the given path. We also fetch the 2921 * 'zoned' property, which is used to validate property settings when creating 2922 * new datasets. 2923 */ 2924static int 2925check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned, 2926 boolean_t accept_ancestor, int *prefixlen) 2927{ 2928 zfs_cmd_t zc = { 0 }; 2929 char parent[ZFS_MAXNAMELEN]; 2930 char *slash; 2931 zfs_handle_t *zhp; 2932 char errbuf[1024]; 2933 uint64_t is_zoned; 2934 2935 (void) snprintf(errbuf, sizeof (errbuf), 2936 dgettext(TEXT_DOMAIN, "cannot create '%s'"), path); 2937 2938 /* get parent, and check to see if this is just a pool */ 2939 if (parent_name(path, parent, sizeof (parent)) != 0) { 2940 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2941 "missing dataset name")); 2942 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 2943 } 2944 2945 /* check to see if the pool exists */ 2946 if ((slash = strchr(parent, '/')) == NULL) 2947 slash = parent + strlen(parent); 2948 (void) strncpy(zc.zc_name, parent, slash - parent); 2949 zc.zc_name[slash - parent] = '\0'; 2950 if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 && 2951 errno == ENOENT) { 2952 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2953 "no such pool '%s'"), zc.zc_name); 2954 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2955 } 2956 2957 /* check to see if the parent dataset exists */ 2958 while ((zhp = make_dataset_handle(hdl, parent)) == NULL) { 2959 if (errno == ENOENT && accept_ancestor) { 2960 /* 2961 * Go deeper to find an ancestor, give up on top level. 2962 */ 2963 if (parent_name(parent, parent, sizeof (parent)) != 0) { 2964 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2965 "no such pool '%s'"), zc.zc_name); 2966 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2967 } 2968 } else if (errno == ENOENT) { 2969 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2970 "parent does not exist")); 2971 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2972 } else 2973 return (zfs_standard_error(hdl, errno, errbuf)); 2974 } 2975 2976 is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 2977 if (zoned != NULL) 2978 *zoned = is_zoned; 2979 2980 /* we are in a non-global zone, but parent is in the global zone */ 2981 if (getzoneid() != GLOBAL_ZONEID && !is_zoned) { 2982 (void) zfs_standard_error(hdl, EPERM, errbuf); 2983 zfs_close(zhp); 2984 return (-1); 2985 } 2986 2987 /* make sure parent is a filesystem */ 2988 if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) { 2989 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2990 "parent is not a filesystem")); 2991 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 2992 zfs_close(zhp); 2993 return (-1); 2994 } 2995 2996 zfs_close(zhp); 2997 if (prefixlen != NULL) 2998 *prefixlen = strlen(parent); 2999 return (0); 3000} 3001 3002/* 3003 * Finds whether the dataset of the given type(s) exists. 3004 */ 3005boolean_t 3006zfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types) 3007{ 3008 zfs_handle_t *zhp; 3009 3010 if (!zfs_validate_name(hdl, path, types, B_FALSE)) 3011 return (B_FALSE); 3012 3013 /* 3014 * Try to get stats for the dataset, which will tell us if it exists. 3015 */ 3016 if ((zhp = make_dataset_handle(hdl, path)) != NULL) { 3017 int ds_type = zhp->zfs_type; 3018 3019 zfs_close(zhp); 3020 if (types & ds_type) 3021 return (B_TRUE); 3022 } 3023 return (B_FALSE); 3024} 3025 3026/* 3027 * Given a path to 'target', create all the ancestors between 3028 * the prefixlen portion of the path, and the target itself. 3029 * Fail if the initial prefixlen-ancestor does not already exist. 3030 */ 3031int 3032create_parents(libzfs_handle_t *hdl, char *target, int prefixlen) 3033{ 3034 zfs_handle_t *h; 3035 char *cp; 3036 const char *opname; 3037 3038 /* make sure prefix exists */ 3039 cp = target + prefixlen; 3040 if (*cp != '/') { 3041 assert(strchr(cp, '/') == NULL); 3042 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3043 } else { 3044 *cp = '\0'; 3045 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3046 *cp = '/'; 3047 } 3048 if (h == NULL) 3049 return (-1); 3050 zfs_close(h); 3051 3052 /* 3053 * Attempt to create, mount, and share any ancestor filesystems, 3054 * up to the prefixlen-long one. 3055 */ 3056 for (cp = target + prefixlen + 1; 3057 cp = strchr(cp, '/'); *cp = '/', cp++) { 3058 3059 *cp = '\0'; 3060 3061 h = make_dataset_handle(hdl, target); 3062 if (h) { 3063 /* it already exists, nothing to do here */ 3064 zfs_close(h); 3065 continue; 3066 } 3067 3068 if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM, 3069 NULL) != 0) { 3070 opname = dgettext(TEXT_DOMAIN, "create"); 3071 goto ancestorerr; 3072 } 3073 3074 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3075 if (h == NULL) { 3076 opname = dgettext(TEXT_DOMAIN, "open"); 3077 goto ancestorerr; 3078 } 3079 3080 if (zfs_mount(h, NULL, 0) != 0) { 3081 opname = dgettext(TEXT_DOMAIN, "mount"); 3082 goto ancestorerr; 3083 } 3084 3085 if (zfs_share(h) != 0) { 3086 opname = dgettext(TEXT_DOMAIN, "share"); 3087 goto ancestorerr; 3088 } 3089 3090 zfs_close(h); 3091 } 3092 3093 return (0); 3094 3095ancestorerr: 3096 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3097 "failed to %s ancestor '%s'"), opname, target); 3098 return (-1); 3099} 3100 3101/* 3102 * Creates non-existing ancestors of the given path. 3103 */ 3104int 3105zfs_create_ancestors(libzfs_handle_t *hdl, const char *path) 3106{ 3107 int prefix; 3108 char *path_copy; 3109 int rc; 3110 3111 if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0) 3112 return (-1); 3113 3114 if ((path_copy = strdup(path)) != NULL) { 3115 rc = create_parents(hdl, path_copy, prefix); 3116 free(path_copy); 3117 } 3118 if (path_copy == NULL || rc != 0) 3119 return (-1); 3120 3121 return (0); 3122} 3123 3124/* 3125 * Create a new filesystem or volume. 3126 */ 3127int 3128zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, 3129 nvlist_t *props) 3130{ 3131 int ret; 3132 uint64_t size = 0; 3133 uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE); 3134 char errbuf[1024]; 3135 uint64_t zoned; 3136 dmu_objset_type_t ost; 3137 3138 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3139 "cannot create '%s'"), path); 3140 3141 /* validate the path, taking care to note the extended error message */ 3142 if (!zfs_validate_name(hdl, path, type, B_TRUE)) 3143 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3144 3145 /* validate parents exist */ 3146 if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0) 3147 return (-1); 3148 3149 /* 3150 * The failure modes when creating a dataset of a different type over 3151 * one that already exists is a little strange. In particular, if you 3152 * try to create a dataset on top of an existing dataset, the ioctl() 3153 * will return ENOENT, not EEXIST. To prevent this from happening, we 3154 * first try to see if the dataset exists. 3155 */ 3156 if (zfs_dataset_exists(hdl, path, ZFS_TYPE_DATASET)) { 3157 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3158 "dataset already exists")); 3159 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3160 } 3161 3162 if (type == ZFS_TYPE_VOLUME) 3163 ost = DMU_OST_ZVOL; 3164 else 3165 ost = DMU_OST_ZFS; 3166 3167 if (props && (props = zfs_valid_proplist(hdl, type, props, 3168 zoned, NULL, errbuf)) == 0) 3169 return (-1); 3170 3171 if (type == ZFS_TYPE_VOLUME) { 3172 /* 3173 * If we are creating a volume, the size and block size must 3174 * satisfy a few restraints. First, the blocksize must be a 3175 * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the 3176 * volsize must be a multiple of the block size, and cannot be 3177 * zero. 3178 */ 3179 if (props == NULL || nvlist_lookup_uint64(props, 3180 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) { 3181 nvlist_free(props); 3182 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3183 "missing volume size")); 3184 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3185 } 3186 3187 if ((ret = nvlist_lookup_uint64(props, 3188 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3189 &blocksize)) != 0) { 3190 if (ret == ENOENT) { 3191 blocksize = zfs_prop_default_numeric( 3192 ZFS_PROP_VOLBLOCKSIZE); 3193 } else { 3194 nvlist_free(props); 3195 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3196 "missing volume block size")); 3197 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3198 } 3199 } 3200 3201 if (size == 0) { 3202 nvlist_free(props); 3203 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3204 "volume size cannot be zero")); 3205 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3206 } 3207 3208 if (size % blocksize != 0) { 3209 nvlist_free(props); 3210 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3211 "volume size must be a multiple of volume block " 3212 "size")); 3213 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3214 } 3215 } 3216 3217 /* create the dataset */ 3218 ret = lzc_create(path, ost, props); 3219 nvlist_free(props); 3220 3221 /* check for failure */ 3222 if (ret != 0) { 3223 char parent[ZFS_MAXNAMELEN]; 3224 (void) parent_name(path, parent, sizeof (parent)); 3225 3226 switch (errno) { 3227 case ENOENT: 3228 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3229 "no such parent '%s'"), parent); 3230 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3231 3232 case EINVAL: 3233 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3234 "parent '%s' is not a filesystem"), parent); 3235 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3236 3237 case EDOM: 3238 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3239 "volume block size must be power of 2 from " 3240 "512B to 128KB")); 3241 3242 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3243 3244 case ENOTSUP: 3245 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3246 "pool must be upgraded to set this " 3247 "property or value")); 3248 return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); 3249#ifdef _ILP32 3250 case EOVERFLOW: 3251 /* 3252 * This platform can't address a volume this big. 3253 */ 3254 if (type == ZFS_TYPE_VOLUME) 3255 return (zfs_error(hdl, EZFS_VOLTOOBIG, 3256 errbuf)); 3257#endif 3258 /* FALLTHROUGH */ 3259 default: 3260 return (zfs_standard_error(hdl, errno, errbuf)); 3261 } 3262 } 3263 3264 return (0); 3265} 3266 3267/* 3268 * Destroys the given dataset. The caller must make sure that the filesystem 3269 * isn't mounted, and that there are no active dependents. If the file system 3270 * does not exist this function does nothing. 3271 */ 3272int 3273zfs_destroy(zfs_handle_t *zhp, boolean_t defer) 3274{ 3275 zfs_cmd_t zc = { 0 }; 3276 3277 if (zhp->zfs_type == ZFS_TYPE_BOOKMARK) { 3278 nvlist_t *nv = fnvlist_alloc(); 3279 fnvlist_add_boolean(nv, zhp->zfs_name); 3280 int error = lzc_destroy_bookmarks(nv, NULL); 3281 fnvlist_free(nv); 3282 if (error != 0) { 3283 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3284 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3285 zhp->zfs_name)); 3286 } 3287 return (0); 3288 } 3289 3290 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3291 3292 if (ZFS_IS_VOLUME(zhp)) { 3293 zc.zc_objset_type = DMU_OST_ZVOL; 3294 } else { 3295 zc.zc_objset_type = DMU_OST_ZFS; 3296 } 3297 3298 zc.zc_defer_destroy = defer; 3299 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0 && 3300 errno != ENOENT) { 3301 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3302 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3303 zhp->zfs_name)); 3304 } 3305 3306 remove_mountpoint(zhp); 3307 3308 return (0); 3309} 3310 3311struct destroydata { 3312 nvlist_t *nvl; 3313 const char *snapname; 3314}; 3315 3316static int 3317zfs_check_snap_cb(zfs_handle_t *zhp, void *arg) 3318{ 3319 struct destroydata *dd = arg; 3320 char name[ZFS_MAXNAMELEN]; 3321 int rv = 0; 3322 3323 (void) snprintf(name, sizeof (name), 3324 "%s@%s", zhp->zfs_name, dd->snapname); 3325 3326 if (lzc_exists(name)) 3327 verify(nvlist_add_boolean(dd->nvl, name) == 0); 3328 3329 rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, dd); 3330 zfs_close(zhp); 3331 return (rv); 3332} 3333 3334/* 3335 * Destroys all snapshots with the given name in zhp & descendants. 3336 */ 3337int 3338zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer) 3339{ 3340 int ret; 3341 struct destroydata dd = { 0 }; 3342 3343 dd.snapname = snapname; 3344 verify(nvlist_alloc(&dd.nvl, NV_UNIQUE_NAME, 0) == 0); 3345 (void) zfs_check_snap_cb(zfs_handle_dup(zhp), &dd); 3346 3347 if (nvlist_empty(dd.nvl)) { 3348 ret = zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT, 3349 dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"), 3350 zhp->zfs_name, snapname); 3351 } else { 3352 ret = zfs_destroy_snaps_nvl(zhp->zfs_hdl, dd.nvl, defer); 3353 } 3354 nvlist_free(dd.nvl); 3355 return (ret); 3356} 3357 3358/* 3359 * Destroys all the snapshots named in the nvlist. 3360 */ 3361int 3362zfs_destroy_snaps_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, boolean_t defer) 3363{ 3364 int ret; 3365 nvlist_t *errlist; 3366 3367 ret = lzc_destroy_snaps(snaps, defer, &errlist); 3368 3369 if (ret == 0) 3370 return (0); 3371 3372 if (nvlist_empty(errlist)) { 3373 char errbuf[1024]; 3374 (void) snprintf(errbuf, sizeof (errbuf), 3375 dgettext(TEXT_DOMAIN, "cannot destroy snapshots")); 3376 3377 ret = zfs_standard_error(hdl, ret, errbuf); 3378 } 3379 for (nvpair_t *pair = nvlist_next_nvpair(errlist, NULL); 3380 pair != NULL; pair = nvlist_next_nvpair(errlist, pair)) { 3381 char errbuf[1024]; 3382 (void) snprintf(errbuf, sizeof (errbuf), 3383 dgettext(TEXT_DOMAIN, "cannot destroy snapshot %s"), 3384 nvpair_name(pair)); 3385 3386 switch (fnvpair_value_int32(pair)) { 3387 case EEXIST: 3388 zfs_error_aux(hdl, 3389 dgettext(TEXT_DOMAIN, "snapshot is cloned")); 3390 ret = zfs_error(hdl, EZFS_EXISTS, errbuf); 3391 break; 3392 default: 3393 ret = zfs_standard_error(hdl, errno, errbuf); 3394 break; 3395 } 3396 } 3397 3398 return (ret); 3399} 3400 3401/* 3402 * Clones the given dataset. The target must be of the same type as the source. 3403 */ 3404int 3405zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props) 3406{ 3407 char parent[ZFS_MAXNAMELEN]; 3408 int ret; 3409 char errbuf[1024]; 3410 libzfs_handle_t *hdl = zhp->zfs_hdl; 3411 uint64_t zoned; 3412 3413 assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); 3414 3415 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3416 "cannot create '%s'"), target); 3417 3418 /* validate the target/clone name */ 3419 if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE)) 3420 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3421 3422 /* validate parents exist */ 3423 if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0) 3424 return (-1); 3425 3426 (void) parent_name(target, parent, sizeof (parent)); 3427 3428 /* do the clone */ 3429 3430 if (props) { 3431 zfs_type_t type; 3432 if (ZFS_IS_VOLUME(zhp)) { 3433 type = ZFS_TYPE_VOLUME; 3434 } else { 3435 type = ZFS_TYPE_FILESYSTEM; 3436 } 3437 if ((props = zfs_valid_proplist(hdl, type, props, zoned, 3438 zhp, errbuf)) == NULL) 3439 return (-1); 3440 } 3441 3442 ret = lzc_clone(target, zhp->zfs_name, props); 3443 nvlist_free(props); 3444 3445 if (ret != 0) { 3446 switch (errno) { 3447 3448 case ENOENT: 3449 /* 3450 * The parent doesn't exist. We should have caught this 3451 * above, but there may a race condition that has since 3452 * destroyed the parent. 3453 * 3454 * At this point, we don't know whether it's the source 3455 * that doesn't exist anymore, or whether the target 3456 * dataset doesn't exist. 3457 */ 3458 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3459 "no such parent '%s'"), parent); 3460 return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); 3461 3462 case EXDEV: 3463 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3464 "source and target pools differ")); 3465 return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET, 3466 errbuf)); 3467 3468 default: 3469 return (zfs_standard_error(zhp->zfs_hdl, errno, 3470 errbuf)); 3471 } 3472 } 3473 3474 return (ret); 3475} 3476 3477/* 3478 * Promotes the given clone fs to be the clone parent. 3479 */ 3480int 3481zfs_promote(zfs_handle_t *zhp) 3482{ 3483 libzfs_handle_t *hdl = zhp->zfs_hdl; 3484 zfs_cmd_t zc = { 0 }; 3485 char parent[MAXPATHLEN]; 3486 int ret; 3487 char errbuf[1024]; 3488 3489 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3490 "cannot promote '%s'"), zhp->zfs_name); 3491 3492 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3493 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3494 "snapshots can not be promoted")); 3495 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3496 } 3497 3498 (void) strlcpy(parent, zhp->zfs_dmustats.dds_origin, sizeof (parent)); 3499 if (parent[0] == '\0') { 3500 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3501 "not a cloned filesystem")); 3502 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3503 } 3504 3505 (void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_origin, 3506 sizeof (zc.zc_value)); 3507 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3508 ret = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); 3509 3510 if (ret != 0) { 3511 int save_errno = errno; 3512 3513 switch (save_errno) { 3514 case EEXIST: 3515 /* There is a conflicting snapshot name. */ 3516 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3517 "conflicting snapshot '%s' from parent '%s'"), 3518 zc.zc_string, parent); 3519 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3520 3521 default: 3522 return (zfs_standard_error(hdl, save_errno, errbuf)); 3523 } 3524 } 3525 return (ret); 3526} 3527 3528typedef struct snapdata { 3529 nvlist_t *sd_nvl; 3530 const char *sd_snapname; 3531} snapdata_t; 3532 3533static int 3534zfs_snapshot_cb(zfs_handle_t *zhp, void *arg) 3535{ 3536 snapdata_t *sd = arg; 3537 char name[ZFS_MAXNAMELEN]; 3538 int rv = 0; 3539 3540 if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) == 0) { 3541 (void) snprintf(name, sizeof (name), 3542 "%s@%s", zfs_get_name(zhp), sd->sd_snapname); 3543 3544 fnvlist_add_boolean(sd->sd_nvl, name); 3545 3546 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd); 3547 } 3548 zfs_close(zhp); 3549 3550 return (rv); 3551} 3552 3553/* 3554 * Creates snapshots. The keys in the snaps nvlist are the snapshots to be 3555 * created. 3556 */ 3557int 3558zfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, nvlist_t *props) 3559{ 3560 int ret; 3561 char errbuf[1024]; 3562 nvpair_t *elem; 3563 nvlist_t *errors; 3564 3565 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3566 "cannot create snapshots ")); 3567 3568 elem = NULL; 3569 while ((elem = nvlist_next_nvpair(snaps, elem)) != NULL) { 3570 const char *snapname = nvpair_name(elem); 3571 3572 /* validate the target name */ 3573 if (!zfs_validate_name(hdl, snapname, ZFS_TYPE_SNAPSHOT, 3574 B_TRUE)) { 3575 (void) snprintf(errbuf, sizeof (errbuf), 3576 dgettext(TEXT_DOMAIN, 3577 "cannot create snapshot '%s'"), snapname); 3578 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3579 } 3580 } 3581 3582 if (props != NULL && 3583 (props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT, 3584 props, B_FALSE, NULL, errbuf)) == NULL) { 3585 return (-1); 3586 } 3587 3588 ret = lzc_snapshot(snaps, props, &errors); 3589 3590 if (ret != 0) { 3591 boolean_t printed = B_FALSE; 3592 for (elem = nvlist_next_nvpair(errors, NULL); 3593 elem != NULL; 3594 elem = nvlist_next_nvpair(errors, elem)) { 3595 (void) snprintf(errbuf, sizeof (errbuf), 3596 dgettext(TEXT_DOMAIN, 3597 "cannot create snapshot '%s'"), nvpair_name(elem)); 3598 (void) zfs_standard_error(hdl, 3599 fnvpair_value_int32(elem), errbuf); 3600 printed = B_TRUE; 3601 } 3602 if (!printed) { 3603 switch (ret) { 3604 case EXDEV: 3605 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3606 "multiple snapshots of same " 3607 "fs not allowed")); 3608 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 3609 3610 break; 3611 default: 3612 (void) zfs_standard_error(hdl, ret, errbuf); 3613 } 3614 } 3615 } 3616 3617 nvlist_free(props); 3618 nvlist_free(errors); 3619 return (ret); 3620} 3621 3622int 3623zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive, 3624 nvlist_t *props) 3625{ 3626 int ret; 3627 snapdata_t sd = { 0 }; 3628 char fsname[ZFS_MAXNAMELEN]; 3629 char *cp; 3630 zfs_handle_t *zhp; 3631 char errbuf[1024]; 3632 3633 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3634 "cannot snapshot %s"), path); 3635 3636 if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE)) 3637 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3638 3639 (void) strlcpy(fsname, path, sizeof (fsname)); 3640 cp = strchr(fsname, '@'); 3641 *cp = '\0'; 3642 sd.sd_snapname = cp + 1; 3643 3644 if ((zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM | 3645 ZFS_TYPE_VOLUME)) == NULL) { 3646 return (-1); 3647 } 3648 3649 verify(nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) == 0); 3650 if (recursive) { 3651 (void) zfs_snapshot_cb(zfs_handle_dup(zhp), &sd); 3652 } else { 3653 fnvlist_add_boolean(sd.sd_nvl, path); 3654 } 3655 3656 ret = zfs_snapshot_nvl(hdl, sd.sd_nvl, props); 3657 nvlist_free(sd.sd_nvl); 3658 zfs_close(zhp); 3659 return (ret); 3660} 3661 3662/* 3663 * Destroy any more recent snapshots. We invoke this callback on any dependents 3664 * of the snapshot first. If the 'cb_dependent' member is non-zero, then this 3665 * is a dependent and we should just destroy it without checking the transaction 3666 * group. 3667 */ 3668typedef struct rollback_data { 3669 const char *cb_target; /* the snapshot */ 3670 uint64_t cb_create; /* creation time reference */ 3671 boolean_t cb_error; 3672 boolean_t cb_force; 3673} rollback_data_t; 3674 3675static int 3676rollback_destroy_dependent(zfs_handle_t *zhp, void *data) 3677{ 3678 rollback_data_t *cbp = data; 3679 prop_changelist_t *clp; 3680 3681 /* We must destroy this clone; first unmount it */ 3682 clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, 3683 cbp->cb_force ? MS_FORCE: 0); 3684 if (clp == NULL || changelist_prefix(clp) != 0) { 3685 cbp->cb_error = B_TRUE; 3686 zfs_close(zhp); 3687 return (0); 3688 } 3689 if (zfs_destroy(zhp, B_FALSE) != 0) 3690 cbp->cb_error = B_TRUE; 3691 else 3692 changelist_remove(clp, zhp->zfs_name); 3693 (void) changelist_postfix(clp); 3694 changelist_free(clp); 3695 3696 zfs_close(zhp); 3697 return (0); 3698} 3699 3700static int 3701rollback_destroy(zfs_handle_t *zhp, void *data) 3702{ 3703 rollback_data_t *cbp = data; 3704 3705 if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) { 3706 cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE, 3707 rollback_destroy_dependent, cbp); 3708 3709 cbp->cb_error |= zfs_destroy(zhp, B_FALSE); 3710 } 3711 3712 zfs_close(zhp); 3713 return (0); 3714} 3715 3716/* 3717 * Given a dataset, rollback to a specific snapshot, discarding any 3718 * data changes since then and making it the active dataset. 3719 * 3720 * Any snapshots and bookmarks more recent than the target are 3721 * destroyed, along with their dependents (i.e. clones). 3722 */ 3723int 3724zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) 3725{ 3726 rollback_data_t cb = { 0 }; 3727 int err; 3728 boolean_t restore_resv = 0; 3729 uint64_t old_volsize, new_volsize; 3730 zfs_prop_t resv_prop; 3731 3732 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM || 3733 zhp->zfs_type == ZFS_TYPE_VOLUME); 3734 3735 /* 3736 * Destroy all recent snapshots and their dependents. 3737 */ 3738 cb.cb_force = force; 3739 cb.cb_target = snap->zfs_name; 3740 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 3741 (void) zfs_iter_snapshots(zhp, B_FALSE, rollback_destroy, &cb); 3742 (void) zfs_iter_bookmarks(zhp, rollback_destroy, &cb); 3743 3744 if (cb.cb_error) 3745 return (-1); 3746 3747 /* 3748 * Now that we have verified that the snapshot is the latest, 3749 * rollback to the given snapshot. 3750 */ 3751 3752 if (zhp->zfs_type == ZFS_TYPE_VOLUME) { 3753 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 3754 return (-1); 3755 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3756 restore_resv = 3757 (old_volsize == zfs_prop_get_int(zhp, resv_prop)); 3758 } 3759 3760 /* 3761 * We rely on zfs_iter_children() to verify that there are no 3762 * newer snapshots for the given dataset. Therefore, we can 3763 * simply pass the name on to the ioctl() call. There is still 3764 * an unlikely race condition where the user has taken a 3765 * snapshot since we verified that this was the most recent. 3766 */ 3767 err = lzc_rollback(zhp->zfs_name, NULL, 0); 3768 if (err != 0) { 3769 (void) zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3770 dgettext(TEXT_DOMAIN, "cannot rollback '%s'"), 3771 zhp->zfs_name); 3772 return (err); 3773 } 3774 3775 /* 3776 * For volumes, if the pre-rollback volsize matched the pre- 3777 * rollback reservation and the volsize has changed then set 3778 * the reservation property to the post-rollback volsize. 3779 * Make a new handle since the rollback closed the dataset. 3780 */ 3781 if ((zhp->zfs_type == ZFS_TYPE_VOLUME) && 3782 (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) { 3783 if (restore_resv) { 3784 new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3785 if (old_volsize != new_volsize) 3786 err = zfs_prop_set_int(zhp, resv_prop, 3787 new_volsize); 3788 } 3789 zfs_close(zhp); 3790 } 3791 return (err); 3792} 3793 3794/* 3795 * Renames the given dataset. 3796 */ 3797int 3798zfs_rename(zfs_handle_t *zhp, const char *source, const char *target, 3799 renameflags_t flags) 3800{ 3801 int ret; 3802 zfs_cmd_t zc = { 0 }; 3803 char *delim; 3804 prop_changelist_t *cl = NULL; 3805 zfs_handle_t *zhrp = NULL; 3806 char *parentname = NULL; 3807 char parent[ZFS_MAXNAMELEN]; 3808 char property[ZFS_MAXPROPLEN]; 3809 libzfs_handle_t *hdl = zhp->zfs_hdl; 3810 char errbuf[1024]; 3811 3812 /* if we have the same exact name, just return success */ 3813 if (strcmp(zhp->zfs_name, target) == 0) 3814 return (0); 3815 3816 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3817 "cannot rename to '%s'"), target); 3818 3819 if (source != NULL) { 3820 /* 3821 * This is recursive snapshots rename, put snapshot name 3822 * (that might not exist) into zfs_name. 3823 */ 3824 assert(flags.recurse); 3825 3826 (void) strlcat(zhp->zfs_name, "@", sizeof(zhp->zfs_name)); 3827 (void) strlcat(zhp->zfs_name, source, sizeof(zhp->zfs_name)); 3828 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 3829 } 3830 3831 /* 3832 * Make sure the target name is valid 3833 */ 3834 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3835 if ((strchr(target, '@') == NULL) || 3836 *target == '@') { 3837 /* 3838 * Snapshot target name is abbreviated, 3839 * reconstruct full dataset name 3840 */ 3841 (void) strlcpy(parent, zhp->zfs_name, 3842 sizeof (parent)); 3843 delim = strchr(parent, '@'); 3844 if (strchr(target, '@') == NULL) 3845 *(++delim) = '\0'; 3846 else 3847 *delim = '\0'; 3848 (void) strlcat(parent, target, sizeof (parent)); 3849 target = parent; 3850 } else { 3851 /* 3852 * Make sure we're renaming within the same dataset. 3853 */ 3854 delim = strchr(target, '@'); 3855 if (strncmp(zhp->zfs_name, target, delim - target) 3856 != 0 || zhp->zfs_name[delim - target] != '@') { 3857 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3858 "snapshots must be part of same " 3859 "dataset")); 3860 return (zfs_error(hdl, EZFS_CROSSTARGET, 3861 errbuf)); 3862 } 3863 } 3864 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3865 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3866 } else { 3867 if (flags.recurse) { 3868 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3869 "recursive rename must be a snapshot")); 3870 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3871 } 3872 3873 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3874 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3875 3876 /* validate parents */ 3877 if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0) 3878 return (-1); 3879 3880 /* make sure we're in the same pool */ 3881 verify((delim = strchr(target, '/')) != NULL); 3882 if (strncmp(zhp->zfs_name, target, delim - target) != 0 || 3883 zhp->zfs_name[delim - target] != '/') { 3884 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3885 "datasets must be within same pool")); 3886 return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); 3887 } 3888 3889 /* new name cannot be a child of the current dataset name */ 3890 if (is_descendant(zhp->zfs_name, target)) { 3891 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3892 "New dataset name cannot be a descendant of " 3893 "current dataset name")); 3894 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3895 } 3896 } 3897 3898 (void) snprintf(errbuf, sizeof (errbuf), 3899 dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name); 3900 3901 if (getzoneid() == GLOBAL_ZONEID && 3902 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 3903 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3904 "dataset is used in a non-global zone")); 3905 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 3906 } 3907 3908 /* 3909 * Avoid unmounting file systems with mountpoint property set to 3910 * 'legacy' or 'none' even if -u option is not given. 3911 */ 3912 if (zhp->zfs_type == ZFS_TYPE_FILESYSTEM && 3913 !flags.recurse && !flags.nounmount && 3914 zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, property, 3915 sizeof (property), NULL, NULL, 0, B_FALSE) == 0 && 3916 (strcmp(property, "legacy") == 0 || 3917 strcmp(property, "none") == 0)) { 3918 flags.nounmount = B_TRUE; 3919 } 3920 if (flags.recurse) { 3921 3922 parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name); 3923 if (parentname == NULL) { 3924 ret = -1; 3925 goto error; 3926 } 3927 delim = strchr(parentname, '@'); 3928 *delim = '\0'; 3929 zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET); 3930 if (zhrp == NULL) { 3931 ret = -1; 3932 goto error; 3933 } 3934 } else if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) { 3935 if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 3936 flags.nounmount ? CL_GATHER_DONT_UNMOUNT : 0, 3937 flags.forceunmount ? MS_FORCE : 0)) == NULL) { 3938 return (-1); 3939 } 3940 3941 if (changelist_haszonedchild(cl)) { 3942 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3943 "child dataset with inherited mountpoint is used " 3944 "in a non-global zone")); 3945 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 3946 goto error; 3947 } 3948 3949 if ((ret = changelist_prefix(cl)) != 0) 3950 goto error; 3951 } 3952 3953 if (ZFS_IS_VOLUME(zhp)) 3954 zc.zc_objset_type = DMU_OST_ZVOL; 3955 else 3956 zc.zc_objset_type = DMU_OST_ZFS; 3957 3958 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3959 (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value)); 3960 3961 zc.zc_cookie = flags.recurse ? 1 : 0; 3962 if (flags.nounmount) 3963 zc.zc_cookie |= 2; 3964 3965 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) { 3966 /* 3967 * if it was recursive, the one that actually failed will 3968 * be in zc.zc_name 3969 */ 3970 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3971 "cannot rename '%s'"), zc.zc_name); 3972 3973 if (flags.recurse && errno == EEXIST) { 3974 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3975 "a child dataset already has a snapshot " 3976 "with the new name")); 3977 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 3978 } else { 3979 (void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf); 3980 } 3981 3982 /* 3983 * On failure, we still want to remount any filesystems that 3984 * were previously mounted, so we don't alter the system state. 3985 */ 3986 if (cl != NULL) 3987 (void) changelist_postfix(cl); 3988 } else { 3989 if (cl != NULL) { 3990 changelist_rename(cl, zfs_get_name(zhp), target); 3991 ret = changelist_postfix(cl); 3992 } 3993 } 3994 3995error: 3996 if (parentname != NULL) { 3997 free(parentname); 3998 } 3999 if (zhrp != NULL) { 4000 zfs_close(zhrp); 4001 } 4002 if (cl != NULL) { 4003 changelist_free(cl); 4004 } 4005 return (ret); 4006} 4007 4008nvlist_t * 4009zfs_get_user_props(zfs_handle_t *zhp) 4010{ 4011 return (zhp->zfs_user_props); 4012} 4013 4014nvlist_t * 4015zfs_get_recvd_props(zfs_handle_t *zhp) 4016{ 4017 if (zhp->zfs_recvd_props == NULL) 4018 if (get_recvd_props_ioctl(zhp) != 0) 4019 return (NULL); 4020 return (zhp->zfs_recvd_props); 4021} 4022 4023/* 4024 * This function is used by 'zfs list' to determine the exact set of columns to 4025 * display, and their maximum widths. This does two main things: 4026 * 4027 * - If this is a list of all properties, then expand the list to include 4028 * all native properties, and set a flag so that for each dataset we look 4029 * for new unique user properties and add them to the list. 4030 * 4031 * - For non fixed-width properties, keep track of the maximum width seen 4032 * so that we can size the column appropriately. If the user has 4033 * requested received property values, we also need to compute the width 4034 * of the RECEIVED column. 4035 */ 4036int 4037zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received, 4038 boolean_t literal) 4039{ 4040 libzfs_handle_t *hdl = zhp->zfs_hdl; 4041 zprop_list_t *entry; 4042 zprop_list_t **last, **start; 4043 nvlist_t *userprops, *propval; 4044 nvpair_t *elem; 4045 char *strval; 4046 char buf[ZFS_MAXPROPLEN]; 4047 4048 if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0) 4049 return (-1); 4050 4051 userprops = zfs_get_user_props(zhp); 4052 4053 entry = *plp; 4054 if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) { 4055 /* 4056 * Go through and add any user properties as necessary. We 4057 * start by incrementing our list pointer to the first 4058 * non-native property. 4059 */ 4060 start = plp; 4061 while (*start != NULL) { 4062 if ((*start)->pl_prop == ZPROP_INVAL) 4063 break; 4064 start = &(*start)->pl_next; 4065 } 4066 4067 elem = NULL; 4068 while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) { 4069 /* 4070 * See if we've already found this property in our list. 4071 */ 4072 for (last = start; *last != NULL; 4073 last = &(*last)->pl_next) { 4074 if (strcmp((*last)->pl_user_prop, 4075 nvpair_name(elem)) == 0) 4076 break; 4077 } 4078 4079 if (*last == NULL) { 4080 if ((entry = zfs_alloc(hdl, 4081 sizeof (zprop_list_t))) == NULL || 4082 ((entry->pl_user_prop = zfs_strdup(hdl, 4083 nvpair_name(elem)))) == NULL) { 4084 free(entry); 4085 return (-1); 4086 } 4087 4088 entry->pl_prop = ZPROP_INVAL; 4089 entry->pl_width = strlen(nvpair_name(elem)); 4090 entry->pl_all = B_TRUE; 4091 *last = entry; 4092 } 4093 } 4094 } 4095 4096 /* 4097 * Now go through and check the width of any non-fixed columns 4098 */ 4099 for (entry = *plp; entry != NULL; entry = entry->pl_next) { 4100 if (entry->pl_fixed && !literal) 4101 continue; 4102 4103 if (entry->pl_prop != ZPROP_INVAL) { 4104 if (zfs_prop_get(zhp, entry->pl_prop, 4105 buf, sizeof (buf), NULL, NULL, 0, literal) == 0) { 4106 if (strlen(buf) > entry->pl_width) 4107 entry->pl_width = strlen(buf); 4108 } 4109 if (received && zfs_prop_get_recvd(zhp, 4110 zfs_prop_to_name(entry->pl_prop), 4111 buf, sizeof (buf), literal) == 0) 4112 if (strlen(buf) > entry->pl_recvd_width) 4113 entry->pl_recvd_width = strlen(buf); 4114 } else { 4115 if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop, 4116 &propval) == 0) { 4117 verify(nvlist_lookup_string(propval, 4118 ZPROP_VALUE, &strval) == 0); 4119 if (strlen(strval) > entry->pl_width) 4120 entry->pl_width = strlen(strval); 4121 } 4122 if (received && zfs_prop_get_recvd(zhp, 4123 entry->pl_user_prop, 4124 buf, sizeof (buf), literal) == 0) 4125 if (strlen(buf) > entry->pl_recvd_width) 4126 entry->pl_recvd_width = strlen(buf); 4127 } 4128 } 4129 4130 return (0); 4131} 4132 4133int 4134zfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path, 4135 char *resource, void *export, void *sharetab, 4136 int sharemax, zfs_share_op_t operation) 4137{ 4138 zfs_cmd_t zc = { 0 }; 4139 int error; 4140 4141 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4142 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4143 if (resource) 4144 (void) strlcpy(zc.zc_string, resource, sizeof (zc.zc_string)); 4145 zc.zc_share.z_sharedata = (uint64_t)(uintptr_t)sharetab; 4146 zc.zc_share.z_exportdata = (uint64_t)(uintptr_t)export; 4147 zc.zc_share.z_sharetype = operation; 4148 zc.zc_share.z_sharemax = sharemax; 4149 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SHARE, &zc); 4150 return (error); 4151} 4152 4153void 4154zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props) 4155{ 4156 nvpair_t *curr; 4157 4158 /* 4159 * Keep a reference to the props-table against which we prune the 4160 * properties. 4161 */ 4162 zhp->zfs_props_table = props; 4163 4164 curr = nvlist_next_nvpair(zhp->zfs_props, NULL); 4165 4166 while (curr) { 4167 zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr)); 4168 nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr); 4169 4170 /* 4171 * User properties will result in ZPROP_INVAL, and since we 4172 * only know how to prune standard ZFS properties, we always 4173 * leave these in the list. This can also happen if we 4174 * encounter an unknown DSL property (when running older 4175 * software, for example). 4176 */ 4177 if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE) 4178 (void) nvlist_remove(zhp->zfs_props, 4179 nvpair_name(curr), nvpair_type(curr)); 4180 curr = next; 4181 } 4182} 4183 4184#ifdef sun 4185static int 4186zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path, 4187 zfs_smb_acl_op_t cmd, char *resource1, char *resource2) 4188{ 4189 zfs_cmd_t zc = { 0 }; 4190 nvlist_t *nvlist = NULL; 4191 int error; 4192 4193 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4194 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4195 zc.zc_cookie = (uint64_t)cmd; 4196 4197 if (cmd == ZFS_SMB_ACL_RENAME) { 4198 if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) { 4199 (void) no_memory(hdl); 4200 return (NULL); 4201 } 4202 } 4203 4204 switch (cmd) { 4205 case ZFS_SMB_ACL_ADD: 4206 case ZFS_SMB_ACL_REMOVE: 4207 (void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string)); 4208 break; 4209 case ZFS_SMB_ACL_RENAME: 4210 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC, 4211 resource1) != 0) { 4212 (void) no_memory(hdl); 4213 return (-1); 4214 } 4215 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET, 4216 resource2) != 0) { 4217 (void) no_memory(hdl); 4218 return (-1); 4219 } 4220 if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) { 4221 nvlist_free(nvlist); 4222 return (-1); 4223 } 4224 break; 4225 case ZFS_SMB_ACL_PURGE: 4226 break; 4227 default: 4228 return (-1); 4229 } 4230 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc); 4231 if (nvlist) 4232 nvlist_free(nvlist); 4233 return (error); 4234} 4235 4236int 4237zfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset, 4238 char *path, char *resource) 4239{ 4240 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD, 4241 resource, NULL)); 4242} 4243 4244int 4245zfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset, 4246 char *path, char *resource) 4247{ 4248 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE, 4249 resource, NULL)); 4250} 4251 4252int 4253zfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path) 4254{ 4255 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE, 4256 NULL, NULL)); 4257} 4258 4259int 4260zfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path, 4261 char *oldname, char *newname) 4262{ 4263 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME, 4264 oldname, newname)); 4265} 4266#endif /* sun */ 4267 4268int 4269zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type, 4270 zfs_userspace_cb_t func, void *arg) 4271{ 4272 zfs_cmd_t zc = { 0 }; 4273 zfs_useracct_t buf[100]; 4274 libzfs_handle_t *hdl = zhp->zfs_hdl; 4275 int ret; 4276 4277 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4278 4279 zc.zc_objset_type = type; 4280 zc.zc_nvlist_dst = (uintptr_t)buf; 4281 4282 for (;;) { 4283 zfs_useracct_t *zua = buf; 4284 4285 zc.zc_nvlist_dst_size = sizeof (buf); 4286 if (zfs_ioctl(hdl, ZFS_IOC_USERSPACE_MANY, &zc) != 0) { 4287 char errbuf[1024]; 4288 4289 (void) snprintf(errbuf, sizeof (errbuf), 4290 dgettext(TEXT_DOMAIN, 4291 "cannot get used/quota for %s"), zc.zc_name); 4292 return (zfs_standard_error_fmt(hdl, errno, errbuf)); 4293 } 4294 if (zc.zc_nvlist_dst_size == 0) 4295 break; 4296 4297 while (zc.zc_nvlist_dst_size > 0) { 4298 if ((ret = func(arg, zua->zu_domain, zua->zu_rid, 4299 zua->zu_space)) != 0) 4300 return (ret); 4301 zua++; 4302 zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t); 4303 } 4304 } 4305 4306 return (0); 4307} 4308 4309struct holdarg { 4310 nvlist_t *nvl; 4311 const char *snapname; 4312 const char *tag; 4313 boolean_t recursive; 4314 int error; 4315}; 4316 4317static int 4318zfs_hold_one(zfs_handle_t *zhp, void *arg) 4319{ 4320 struct holdarg *ha = arg; 4321 char name[ZFS_MAXNAMELEN]; 4322 int rv = 0; 4323 4324 (void) snprintf(name, sizeof (name), 4325 "%s@%s", zhp->zfs_name, ha->snapname); 4326 4327 if (lzc_exists(name)) 4328 fnvlist_add_string(ha->nvl, name, ha->tag); 4329 4330 if (ha->recursive) 4331 rv = zfs_iter_filesystems(zhp, zfs_hold_one, ha); 4332 zfs_close(zhp); 4333 return (rv); 4334} 4335 4336int 4337zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag, 4338 boolean_t recursive, int cleanup_fd) 4339{ 4340 int ret; 4341 struct holdarg ha; 4342 4343 ha.nvl = fnvlist_alloc(); 4344 ha.snapname = snapname; 4345 ha.tag = tag; 4346 ha.recursive = recursive; 4347 (void) zfs_hold_one(zfs_handle_dup(zhp), &ha); 4348 4349 if (nvlist_empty(ha.nvl)) { 4350 char errbuf[1024]; 4351 4352 fnvlist_free(ha.nvl); 4353 ret = ENOENT; 4354 (void) snprintf(errbuf, sizeof (errbuf), 4355 dgettext(TEXT_DOMAIN, 4356 "cannot hold snapshot '%s@%s'"), 4357 zhp->zfs_name, snapname); 4358 (void) zfs_standard_error(zhp->zfs_hdl, ret, errbuf); 4359 return (ret); 4360 } 4361 4362 ret = zfs_hold_nvl(zhp, cleanup_fd, ha.nvl); 4363 fnvlist_free(ha.nvl); 4364 4365 return (ret); 4366} 4367 4368int 4369zfs_hold_nvl(zfs_handle_t *zhp, int cleanup_fd, nvlist_t *holds) 4370{ 4371 int ret; 4372 nvlist_t *errors; 4373 libzfs_handle_t *hdl = zhp->zfs_hdl; 4374 char errbuf[1024]; 4375 nvpair_t *elem; 4376 4377 errors = NULL; 4378 ret = lzc_hold(holds, cleanup_fd, &errors); 4379 4380 if (ret == 0) { 4381 /* There may be errors even in the success case. */ 4382 fnvlist_free(errors); 4383 return (0); 4384 } 4385 4386 if (nvlist_empty(errors)) { 4387 /* no hold-specific errors */ 4388 (void) snprintf(errbuf, sizeof (errbuf), 4389 dgettext(TEXT_DOMAIN, "cannot hold")); 4390 switch (ret) { 4391 case ENOTSUP: 4392 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4393 "pool must be upgraded")); 4394 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4395 break; 4396 case EINVAL: 4397 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4398 break; 4399 default: 4400 (void) zfs_standard_error(hdl, ret, errbuf); 4401 } 4402 } 4403 4404 for (elem = nvlist_next_nvpair(errors, NULL); 4405 elem != NULL; 4406 elem = nvlist_next_nvpair(errors, elem)) { 4407 (void) snprintf(errbuf, sizeof (errbuf), 4408 dgettext(TEXT_DOMAIN, 4409 "cannot hold snapshot '%s'"), nvpair_name(elem)); 4410 switch (fnvpair_value_int32(elem)) { 4411 case E2BIG: 4412 /* 4413 * Temporary tags wind up having the ds object id 4414 * prepended. So even if we passed the length check 4415 * above, it's still possible for the tag to wind 4416 * up being slightly too long. 4417 */ 4418 (void) zfs_error(hdl, EZFS_TAGTOOLONG, errbuf); 4419 break; 4420 case EINVAL: 4421 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4422 break; 4423 case EEXIST: 4424 (void) zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf); 4425 break; 4426 default: 4427 (void) zfs_standard_error(hdl, 4428 fnvpair_value_int32(elem), errbuf); 4429 } 4430 } 4431 4432 fnvlist_free(errors); 4433 return (ret); 4434} 4435 4436static int 4437zfs_release_one(zfs_handle_t *zhp, void *arg) 4438{ 4439 struct holdarg *ha = arg; 4440 char name[ZFS_MAXNAMELEN]; 4441 int rv = 0; 4442 nvlist_t *existing_holds; 4443 4444 (void) snprintf(name, sizeof (name), 4445 "%s@%s", zhp->zfs_name, ha->snapname); 4446 4447 if (lzc_get_holds(name, &existing_holds) != 0) { 4448 ha->error = ENOENT; 4449 } else if (!nvlist_exists(existing_holds, ha->tag)) { 4450 ha->error = ESRCH; 4451 } else { 4452 nvlist_t *torelease = fnvlist_alloc(); 4453 fnvlist_add_boolean(torelease, ha->tag); 4454 fnvlist_add_nvlist(ha->nvl, name, torelease); 4455 fnvlist_free(torelease); 4456 } 4457 4458 if (ha->recursive) 4459 rv = zfs_iter_filesystems(zhp, zfs_release_one, ha); 4460 zfs_close(zhp); 4461 return (rv); 4462} 4463 4464int 4465zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag, 4466 boolean_t recursive) 4467{ 4468 int ret; 4469 struct holdarg ha; 4470 nvlist_t *errors = NULL; 4471 nvpair_t *elem; 4472 libzfs_handle_t *hdl = zhp->zfs_hdl; 4473 char errbuf[1024]; 4474 4475 ha.nvl = fnvlist_alloc(); 4476 ha.snapname = snapname; 4477 ha.tag = tag; 4478 ha.recursive = recursive; 4479 ha.error = 0; 4480 (void) zfs_release_one(zfs_handle_dup(zhp), &ha); 4481 4482 if (nvlist_empty(ha.nvl)) { 4483 fnvlist_free(ha.nvl); 4484 ret = ha.error; 4485 (void) snprintf(errbuf, sizeof (errbuf), 4486 dgettext(TEXT_DOMAIN, 4487 "cannot release hold from snapshot '%s@%s'"), 4488 zhp->zfs_name, snapname); 4489 if (ret == ESRCH) { 4490 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4491 } else { 4492 (void) zfs_standard_error(hdl, ret, errbuf); 4493 } 4494 return (ret); 4495 } 4496 4497 ret = lzc_release(ha.nvl, &errors); 4498 fnvlist_free(ha.nvl); 4499 4500 if (ret == 0) { 4501 /* There may be errors even in the success case. */ 4502 fnvlist_free(errors); 4503 return (0); 4504 } 4505 4506 if (nvlist_empty(errors)) { 4507 /* no hold-specific errors */ 4508 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4509 "cannot release")); 4510 switch (errno) { 4511 case ENOTSUP: 4512 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4513 "pool must be upgraded")); 4514 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4515 break; 4516 default: 4517 (void) zfs_standard_error_fmt(hdl, errno, errbuf); 4518 } 4519 } 4520 4521 for (elem = nvlist_next_nvpair(errors, NULL); 4522 elem != NULL; 4523 elem = nvlist_next_nvpair(errors, elem)) { 4524 (void) snprintf(errbuf, sizeof (errbuf), 4525 dgettext(TEXT_DOMAIN, 4526 "cannot release hold from snapshot '%s'"), 4527 nvpair_name(elem)); 4528 switch (fnvpair_value_int32(elem)) { 4529 case ESRCH: 4530 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4531 break; 4532 case EINVAL: 4533 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4534 break; 4535 default: 4536 (void) zfs_standard_error_fmt(hdl, 4537 fnvpair_value_int32(elem), errbuf); 4538 } 4539 } 4540 4541 fnvlist_free(errors); 4542 return (ret); 4543} 4544 4545int 4546zfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl) 4547{ 4548 zfs_cmd_t zc = { 0 }; 4549 libzfs_handle_t *hdl = zhp->zfs_hdl; 4550 int nvsz = 2048; 4551 void *nvbuf; 4552 int err = 0; 4553 char errbuf[1024]; 4554 4555 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4556 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4557 4558tryagain: 4559 4560 nvbuf = malloc(nvsz); 4561 if (nvbuf == NULL) { 4562 err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno))); 4563 goto out; 4564 } 4565 4566 zc.zc_nvlist_dst_size = nvsz; 4567 zc.zc_nvlist_dst = (uintptr_t)nvbuf; 4568 4569 (void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN); 4570 4571 if (ioctl(hdl->libzfs_fd, ZFS_IOC_GET_FSACL, &zc) != 0) { 4572 (void) snprintf(errbuf, sizeof (errbuf), 4573 dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"), 4574 zc.zc_name); 4575 switch (errno) { 4576 case ENOMEM: 4577 free(nvbuf); 4578 nvsz = zc.zc_nvlist_dst_size; 4579 goto tryagain; 4580 4581 case ENOTSUP: 4582 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4583 "pool must be upgraded")); 4584 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4585 break; 4586 case EINVAL: 4587 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4588 break; 4589 case ENOENT: 4590 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4591 break; 4592 default: 4593 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4594 break; 4595 } 4596 } else { 4597 /* success */ 4598 int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0); 4599 if (rc) { 4600 (void) snprintf(errbuf, sizeof (errbuf), dgettext( 4601 TEXT_DOMAIN, "cannot get permissions on '%s'"), 4602 zc.zc_name); 4603 err = zfs_standard_error_fmt(hdl, rc, errbuf); 4604 } 4605 } 4606 4607 free(nvbuf); 4608out: 4609 return (err); 4610} 4611 4612int 4613zfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl) 4614{ 4615 zfs_cmd_t zc = { 0 }; 4616 libzfs_handle_t *hdl = zhp->zfs_hdl; 4617 char *nvbuf; 4618 char errbuf[1024]; 4619 size_t nvsz; 4620 int err; 4621 4622 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4623 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4624 4625 err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE); 4626 assert(err == 0); 4627 4628 nvbuf = malloc(nvsz); 4629 4630 err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0); 4631 assert(err == 0); 4632 4633 zc.zc_nvlist_src_size = nvsz; 4634 zc.zc_nvlist_src = (uintptr_t)nvbuf; 4635 zc.zc_perm_action = un; 4636 4637 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4638 4639 if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) { 4640 (void) snprintf(errbuf, sizeof (errbuf), 4641 dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"), 4642 zc.zc_name); 4643 switch (errno) { 4644 case ENOTSUP: 4645 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4646 "pool must be upgraded")); 4647 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4648 break; 4649 case EINVAL: 4650 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4651 break; 4652 case ENOENT: 4653 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4654 break; 4655 default: 4656 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4657 break; 4658 } 4659 } 4660 4661 free(nvbuf); 4662 4663 return (err); 4664} 4665 4666int 4667zfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl) 4668{ 4669 int err; 4670 char errbuf[1024]; 4671 4672 err = lzc_get_holds(zhp->zfs_name, nvl); 4673 4674 if (err != 0) { 4675 libzfs_handle_t *hdl = zhp->zfs_hdl; 4676 4677 (void) snprintf(errbuf, sizeof (errbuf), 4678 dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"), 4679 zhp->zfs_name); 4680 switch (err) { 4681 case ENOTSUP: 4682 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4683 "pool must be upgraded")); 4684 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4685 break; 4686 case EINVAL: 4687 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4688 break; 4689 case ENOENT: 4690 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4691 break; 4692 default: 4693 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4694 break; 4695 } 4696 } 4697 4698 return (err); 4699} 4700 4701/* 4702 * Convert the zvol's volume size to an appropriate reservation. 4703 * Note: If this routine is updated, it is necessary to update the ZFS test 4704 * suite's shell version in reservation.kshlib. 4705 */ 4706uint64_t 4707zvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props) 4708{ 4709 uint64_t numdb; 4710 uint64_t nblocks, volblocksize; 4711 int ncopies; 4712 char *strval; 4713 4714 if (nvlist_lookup_string(props, 4715 zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0) 4716 ncopies = atoi(strval); 4717 else 4718 ncopies = 1; 4719 if (nvlist_lookup_uint64(props, 4720 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 4721 &volblocksize) != 0) 4722 volblocksize = ZVOL_DEFAULT_BLOCKSIZE; 4723 nblocks = volsize/volblocksize; 4724 /* start with metadnode L0-L6 */ 4725 numdb = 7; 4726 /* calculate number of indirects */ 4727 while (nblocks > 1) { 4728 nblocks += DNODES_PER_LEVEL - 1; 4729 nblocks /= DNODES_PER_LEVEL; 4730 numdb += nblocks; 4731 } 4732 numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1); 4733 volsize *= ncopies; 4734 /* 4735 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't 4736 * compressed, but in practice they compress down to about 4737 * 1100 bytes 4738 */ 4739 numdb *= 1ULL << DN_MAX_INDBLKSHIFT; 4740 volsize += numdb; 4741 return (volsize); 4742} 4743 4744/* 4745 * Attach/detach the given filesystem to/from the given jail. 4746 */ 4747int 4748zfs_jail(zfs_handle_t *zhp, int jailid, int attach) 4749{ 4750 libzfs_handle_t *hdl = zhp->zfs_hdl; 4751 zfs_cmd_t zc = { 0 }; 4752 char errbuf[1024]; 4753 unsigned long cmd; 4754 int ret; 4755 4756 if (attach) { 4757 (void) snprintf(errbuf, sizeof (errbuf), 4758 dgettext(TEXT_DOMAIN, "cannot jail '%s'"), zhp->zfs_name); 4759 } else { 4760 (void) snprintf(errbuf, sizeof (errbuf), 4761 dgettext(TEXT_DOMAIN, "cannot unjail '%s'"), zhp->zfs_name); 4762 } 4763 4764 switch (zhp->zfs_type) { 4765 case ZFS_TYPE_VOLUME: 4766 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4767 "volumes can not be jailed")); 4768 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 4769 case ZFS_TYPE_SNAPSHOT: 4770 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4771 "snapshots can not be jailed")); 4772 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 4773 } 4774 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4775 4776 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4777 zc.zc_objset_type = DMU_OST_ZFS; 4778 zc.zc_jailid = jailid; 4779 4780 cmd = attach ? ZFS_IOC_JAIL : ZFS_IOC_UNJAIL; 4781 if ((ret = ioctl(hdl->libzfs_fd, cmd, &zc)) != 0) 4782 zfs_standard_error(hdl, errno, errbuf); 4783 4784 return (ret); 4785} 4786