libzfs_dataset.c revision 275579
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 E2BIG: 1476 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1477 "property value too long")); 1478 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1479 break; 1480 1481 case ENOTSUP: 1482 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1483 "pool and or dataset must be upgraded to set this " 1484 "property or value")); 1485 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 1486 break; 1487 1488 case ERANGE: 1489 case EDOM: 1490 if (prop == ZFS_PROP_COMPRESSION || 1491 prop == ZFS_PROP_RECORDSIZE) { 1492 (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1493 "property setting is not allowed on " 1494 "bootable datasets")); 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 char * 1782getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 1783{ 1784 nvlist_t *nv; 1785 char *value; 1786 1787 *source = NULL; 1788 if (nvlist_lookup_nvlist(zhp->zfs_props, 1789 zfs_prop_to_name(prop), &nv) == 0) { 1790 verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0); 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 if ((value = (char *)zfs_prop_default_string(prop)) == NULL) 1796 value = ""; 1797 *source = ""; 1798 } 1799 1800 return (value); 1801} 1802 1803static boolean_t 1804zfs_is_recvd_props_mode(zfs_handle_t *zhp) 1805{ 1806 return (zhp->zfs_props == zhp->zfs_recvd_props); 1807} 1808 1809static void 1810zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1811{ 1812 *cookie = (uint64_t)(uintptr_t)zhp->zfs_props; 1813 zhp->zfs_props = zhp->zfs_recvd_props; 1814} 1815 1816static void 1817zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1818{ 1819 zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie; 1820 *cookie = 0; 1821} 1822 1823/* 1824 * Internal function for getting a numeric property. Both zfs_prop_get() and 1825 * zfs_prop_get_int() are built using this interface. 1826 * 1827 * Certain properties can be overridden using 'mount -o'. In this case, scan 1828 * the contents of the /etc/mnttab entry, searching for the appropriate options. 1829 * If they differ from the on-disk values, report the current values and mark 1830 * the source "temporary". 1831 */ 1832static int 1833get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, 1834 char **source, uint64_t *val) 1835{ 1836 zfs_cmd_t zc = { 0 }; 1837 nvlist_t *zplprops = NULL; 1838 struct mnttab mnt; 1839 char *mntopt_on = NULL; 1840 char *mntopt_off = NULL; 1841 boolean_t received = zfs_is_recvd_props_mode(zhp); 1842 1843 *source = NULL; 1844 1845 switch (prop) { 1846 case ZFS_PROP_ATIME: 1847 mntopt_on = MNTOPT_ATIME; 1848 mntopt_off = MNTOPT_NOATIME; 1849 break; 1850 1851 case ZFS_PROP_DEVICES: 1852 mntopt_on = MNTOPT_DEVICES; 1853 mntopt_off = MNTOPT_NODEVICES; 1854 break; 1855 1856 case ZFS_PROP_EXEC: 1857 mntopt_on = MNTOPT_EXEC; 1858 mntopt_off = MNTOPT_NOEXEC; 1859 break; 1860 1861 case ZFS_PROP_READONLY: 1862 mntopt_on = MNTOPT_RO; 1863 mntopt_off = MNTOPT_RW; 1864 break; 1865 1866 case ZFS_PROP_SETUID: 1867 mntopt_on = MNTOPT_SETUID; 1868 mntopt_off = MNTOPT_NOSETUID; 1869 break; 1870 1871 case ZFS_PROP_XATTR: 1872 mntopt_on = MNTOPT_XATTR; 1873 mntopt_off = MNTOPT_NOXATTR; 1874 break; 1875 1876 case ZFS_PROP_NBMAND: 1877 mntopt_on = MNTOPT_NBMAND; 1878 mntopt_off = MNTOPT_NONBMAND; 1879 break; 1880 } 1881 1882 /* 1883 * Because looking up the mount options is potentially expensive 1884 * (iterating over all of /etc/mnttab), we defer its calculation until 1885 * we're looking up a property which requires its presence. 1886 */ 1887 if (!zhp->zfs_mntcheck && 1888 (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) { 1889 libzfs_handle_t *hdl = zhp->zfs_hdl; 1890 struct mnttab entry; 1891 1892 if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) { 1893 zhp->zfs_mntopts = zfs_strdup(hdl, 1894 entry.mnt_mntopts); 1895 if (zhp->zfs_mntopts == NULL) 1896 return (-1); 1897 } 1898 1899 zhp->zfs_mntcheck = B_TRUE; 1900 } 1901 1902 if (zhp->zfs_mntopts == NULL) 1903 mnt.mnt_mntopts = ""; 1904 else 1905 mnt.mnt_mntopts = zhp->zfs_mntopts; 1906 1907 switch (prop) { 1908 case ZFS_PROP_ATIME: 1909 case ZFS_PROP_DEVICES: 1910 case ZFS_PROP_EXEC: 1911 case ZFS_PROP_READONLY: 1912 case ZFS_PROP_SETUID: 1913 case ZFS_PROP_XATTR: 1914 case ZFS_PROP_NBMAND: 1915 *val = getprop_uint64(zhp, prop, source); 1916 1917 if (received) 1918 break; 1919 1920 if (hasmntopt(&mnt, mntopt_on) && !*val) { 1921 *val = B_TRUE; 1922 if (src) 1923 *src = ZPROP_SRC_TEMPORARY; 1924 } else if (hasmntopt(&mnt, mntopt_off) && *val) { 1925 *val = B_FALSE; 1926 if (src) 1927 *src = ZPROP_SRC_TEMPORARY; 1928 } 1929 break; 1930 1931 case ZFS_PROP_CANMOUNT: 1932 case ZFS_PROP_VOLSIZE: 1933 case ZFS_PROP_QUOTA: 1934 case ZFS_PROP_REFQUOTA: 1935 case ZFS_PROP_RESERVATION: 1936 case ZFS_PROP_REFRESERVATION: 1937 case ZFS_PROP_FILESYSTEM_LIMIT: 1938 case ZFS_PROP_SNAPSHOT_LIMIT: 1939 case ZFS_PROP_FILESYSTEM_COUNT: 1940 case ZFS_PROP_SNAPSHOT_COUNT: 1941 *val = getprop_uint64(zhp, prop, source); 1942 1943 if (*source == NULL) { 1944 /* not default, must be local */ 1945 *source = zhp->zfs_name; 1946 } 1947 break; 1948 1949 case ZFS_PROP_MOUNTED: 1950 *val = (zhp->zfs_mntopts != NULL); 1951 break; 1952 1953 case ZFS_PROP_NUMCLONES: 1954 *val = zhp->zfs_dmustats.dds_num_clones; 1955 break; 1956 1957 case ZFS_PROP_VERSION: 1958 case ZFS_PROP_NORMALIZE: 1959 case ZFS_PROP_UTF8ONLY: 1960 case ZFS_PROP_CASE: 1961 if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) || 1962 zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 1963 return (-1); 1964 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1965 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) { 1966 zcmd_free_nvlists(&zc); 1967 return (-1); 1968 } 1969 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 || 1970 nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop), 1971 val) != 0) { 1972 zcmd_free_nvlists(&zc); 1973 return (-1); 1974 } 1975 if (zplprops) 1976 nvlist_free(zplprops); 1977 zcmd_free_nvlists(&zc); 1978 break; 1979 1980 case ZFS_PROP_INCONSISTENT: 1981 *val = zhp->zfs_dmustats.dds_inconsistent; 1982 break; 1983 1984 default: 1985 switch (zfs_prop_get_type(prop)) { 1986 case PROP_TYPE_NUMBER: 1987 case PROP_TYPE_INDEX: 1988 *val = getprop_uint64(zhp, prop, source); 1989 /* 1990 * If we tried to use a default value for a 1991 * readonly property, it means that it was not 1992 * present. 1993 */ 1994 if (zfs_prop_readonly(prop) && 1995 *source != NULL && (*source)[0] == '\0') { 1996 *source = NULL; 1997 } 1998 break; 1999 2000 case PROP_TYPE_STRING: 2001 default: 2002 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 2003 "cannot get non-numeric property")); 2004 return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP, 2005 dgettext(TEXT_DOMAIN, "internal error"))); 2006 } 2007 } 2008 2009 return (0); 2010} 2011 2012/* 2013 * Calculate the source type, given the raw source string. 2014 */ 2015static void 2016get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source, 2017 char *statbuf, size_t statlen) 2018{ 2019 if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY) 2020 return; 2021 2022 if (source == NULL) { 2023 *srctype = ZPROP_SRC_NONE; 2024 } else if (source[0] == '\0') { 2025 *srctype = ZPROP_SRC_DEFAULT; 2026 } else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) { 2027 *srctype = ZPROP_SRC_RECEIVED; 2028 } else { 2029 if (strcmp(source, zhp->zfs_name) == 0) { 2030 *srctype = ZPROP_SRC_LOCAL; 2031 } else { 2032 (void) strlcpy(statbuf, source, statlen); 2033 *srctype = ZPROP_SRC_INHERITED; 2034 } 2035 } 2036 2037} 2038 2039int 2040zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf, 2041 size_t proplen, boolean_t literal) 2042{ 2043 zfs_prop_t prop; 2044 int err = 0; 2045 2046 if (zhp->zfs_recvd_props == NULL) 2047 if (get_recvd_props_ioctl(zhp) != 0) 2048 return (-1); 2049 2050 prop = zfs_name_to_prop(propname); 2051 2052 if (prop != ZPROP_INVAL) { 2053 uint64_t cookie; 2054 if (!nvlist_exists(zhp->zfs_recvd_props, propname)) 2055 return (-1); 2056 zfs_set_recvd_props_mode(zhp, &cookie); 2057 err = zfs_prop_get(zhp, prop, propbuf, proplen, 2058 NULL, NULL, 0, literal); 2059 zfs_unset_recvd_props_mode(zhp, &cookie); 2060 } else { 2061 nvlist_t *propval; 2062 char *recvdval; 2063 if (nvlist_lookup_nvlist(zhp->zfs_recvd_props, 2064 propname, &propval) != 0) 2065 return (-1); 2066 verify(nvlist_lookup_string(propval, ZPROP_VALUE, 2067 &recvdval) == 0); 2068 (void) strlcpy(propbuf, recvdval, proplen); 2069 } 2070 2071 return (err == 0 ? 0 : -1); 2072} 2073 2074static int 2075get_clones_string(zfs_handle_t *zhp, char *propbuf, size_t proplen) 2076{ 2077 nvlist_t *value; 2078 nvpair_t *pair; 2079 2080 value = zfs_get_clones_nvl(zhp); 2081 if (value == NULL) 2082 return (-1); 2083 2084 propbuf[0] = '\0'; 2085 for (pair = nvlist_next_nvpair(value, NULL); pair != NULL; 2086 pair = nvlist_next_nvpair(value, pair)) { 2087 if (propbuf[0] != '\0') 2088 (void) strlcat(propbuf, ",", proplen); 2089 (void) strlcat(propbuf, nvpair_name(pair), proplen); 2090 } 2091 2092 return (0); 2093} 2094 2095struct get_clones_arg { 2096 uint64_t numclones; 2097 nvlist_t *value; 2098 const char *origin; 2099 char buf[ZFS_MAXNAMELEN]; 2100}; 2101 2102int 2103get_clones_cb(zfs_handle_t *zhp, void *arg) 2104{ 2105 struct get_clones_arg *gca = arg; 2106 2107 if (gca->numclones == 0) { 2108 zfs_close(zhp); 2109 return (0); 2110 } 2111 2112 if (zfs_prop_get(zhp, ZFS_PROP_ORIGIN, gca->buf, sizeof (gca->buf), 2113 NULL, NULL, 0, B_TRUE) != 0) 2114 goto out; 2115 if (strcmp(gca->buf, gca->origin) == 0) { 2116 fnvlist_add_boolean(gca->value, zfs_get_name(zhp)); 2117 gca->numclones--; 2118 } 2119 2120out: 2121 (void) zfs_iter_children(zhp, get_clones_cb, gca); 2122 zfs_close(zhp); 2123 return (0); 2124} 2125 2126nvlist_t * 2127zfs_get_clones_nvl(zfs_handle_t *zhp) 2128{ 2129 nvlist_t *nv, *value; 2130 2131 if (nvlist_lookup_nvlist(zhp->zfs_props, 2132 zfs_prop_to_name(ZFS_PROP_CLONES), &nv) != 0) { 2133 struct get_clones_arg gca; 2134 2135 /* 2136 * if this is a snapshot, then the kernel wasn't able 2137 * to get the clones. Do it by slowly iterating. 2138 */ 2139 if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) 2140 return (NULL); 2141 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, 0) != 0) 2142 return (NULL); 2143 if (nvlist_alloc(&value, NV_UNIQUE_NAME, 0) != 0) { 2144 nvlist_free(nv); 2145 return (NULL); 2146 } 2147 2148 gca.numclones = zfs_prop_get_int(zhp, ZFS_PROP_NUMCLONES); 2149 gca.value = value; 2150 gca.origin = zhp->zfs_name; 2151 2152 if (gca.numclones != 0) { 2153 zfs_handle_t *root; 2154 char pool[ZFS_MAXNAMELEN]; 2155 char *cp = pool; 2156 2157 /* get the pool name */ 2158 (void) strlcpy(pool, zhp->zfs_name, sizeof (pool)); 2159 (void) strsep(&cp, "/@"); 2160 root = zfs_open(zhp->zfs_hdl, pool, 2161 ZFS_TYPE_FILESYSTEM); 2162 2163 (void) get_clones_cb(root, &gca); 2164 } 2165 2166 if (gca.numclones != 0 || 2167 nvlist_add_nvlist(nv, ZPROP_VALUE, value) != 0 || 2168 nvlist_add_nvlist(zhp->zfs_props, 2169 zfs_prop_to_name(ZFS_PROP_CLONES), nv) != 0) { 2170 nvlist_free(nv); 2171 nvlist_free(value); 2172 return (NULL); 2173 } 2174 nvlist_free(nv); 2175 nvlist_free(value); 2176 verify(0 == nvlist_lookup_nvlist(zhp->zfs_props, 2177 zfs_prop_to_name(ZFS_PROP_CLONES), &nv)); 2178 } 2179 2180 verify(nvlist_lookup_nvlist(nv, ZPROP_VALUE, &value) == 0); 2181 2182 return (value); 2183} 2184 2185/* 2186 * Retrieve a property from the given object. If 'literal' is specified, then 2187 * numbers are left as exact values. Otherwise, numbers are converted to a 2188 * human-readable form. 2189 * 2190 * Returns 0 on success, or -1 on error. 2191 */ 2192int 2193zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, 2194 zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal) 2195{ 2196 char *source = NULL; 2197 uint64_t val; 2198 char *str; 2199 const char *strval; 2200 boolean_t received = zfs_is_recvd_props_mode(zhp); 2201 2202 /* 2203 * Check to see if this property applies to our object 2204 */ 2205 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 2206 return (-1); 2207 2208 if (received && zfs_prop_readonly(prop)) 2209 return (-1); 2210 2211 if (src) 2212 *src = ZPROP_SRC_NONE; 2213 2214 switch (prop) { 2215 case ZFS_PROP_CREATION: 2216 /* 2217 * 'creation' is a time_t stored in the statistics. We convert 2218 * this into a string unless 'literal' is specified. 2219 */ 2220 { 2221 val = getprop_uint64(zhp, prop, &source); 2222 time_t time = (time_t)val; 2223 struct tm t; 2224 2225 if (literal || 2226 localtime_r(&time, &t) == NULL || 2227 strftime(propbuf, proplen, "%a %b %e %k:%M %Y", 2228 &t) == 0) 2229 (void) snprintf(propbuf, proplen, "%llu", val); 2230 } 2231 break; 2232 2233 case ZFS_PROP_MOUNTPOINT: 2234 /* 2235 * Getting the precise mountpoint can be tricky. 2236 * 2237 * - for 'none' or 'legacy', return those values. 2238 * - for inherited mountpoints, we want to take everything 2239 * after our ancestor and append it to the inherited value. 2240 * 2241 * If the pool has an alternate root, we want to prepend that 2242 * root to any values we return. 2243 */ 2244 2245 str = getprop_string(zhp, prop, &source); 2246 2247 if (str[0] == '/') { 2248 char buf[MAXPATHLEN]; 2249 char *root = buf; 2250 const char *relpath; 2251 2252 /* 2253 * If we inherit the mountpoint, even from a dataset 2254 * with a received value, the source will be the path of 2255 * the dataset we inherit from. If source is 2256 * ZPROP_SOURCE_VAL_RECVD, the received value is not 2257 * inherited. 2258 */ 2259 if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) { 2260 relpath = ""; 2261 } else { 2262 relpath = zhp->zfs_name + strlen(source); 2263 if (relpath[0] == '/') 2264 relpath++; 2265 } 2266 2267 if ((zpool_get_prop(zhp->zpool_hdl, 2268 ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL, 2269 B_FALSE)) || (strcmp(root, "-") == 0)) 2270 root[0] = '\0'; 2271 /* 2272 * Special case an alternate root of '/'. This will 2273 * avoid having multiple leading slashes in the 2274 * mountpoint path. 2275 */ 2276 if (strcmp(root, "/") == 0) 2277 root++; 2278 2279 /* 2280 * If the mountpoint is '/' then skip over this 2281 * if we are obtaining either an alternate root or 2282 * an inherited mountpoint. 2283 */ 2284 if (str[1] == '\0' && (root[0] != '\0' || 2285 relpath[0] != '\0')) 2286 str++; 2287 2288 if (relpath[0] == '\0') 2289 (void) snprintf(propbuf, proplen, "%s%s", 2290 root, str); 2291 else 2292 (void) snprintf(propbuf, proplen, "%s%s%s%s", 2293 root, str, relpath[0] == '@' ? "" : "/", 2294 relpath); 2295 } else { 2296 /* 'legacy' or 'none' */ 2297 (void) strlcpy(propbuf, str, proplen); 2298 } 2299 2300 break; 2301 2302 case ZFS_PROP_ORIGIN: 2303 (void) strlcpy(propbuf, getprop_string(zhp, prop, &source), 2304 proplen); 2305 /* 2306 * If there is no parent at all, return failure to indicate that 2307 * it doesn't apply to this dataset. 2308 */ 2309 if (propbuf[0] == '\0') 2310 return (-1); 2311 break; 2312 2313 case ZFS_PROP_CLONES: 2314 if (get_clones_string(zhp, propbuf, proplen) != 0) 2315 return (-1); 2316 break; 2317 2318 case ZFS_PROP_QUOTA: 2319 case ZFS_PROP_REFQUOTA: 2320 case ZFS_PROP_RESERVATION: 2321 case ZFS_PROP_REFRESERVATION: 2322 2323 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2324 return (-1); 2325 2326 /* 2327 * If quota or reservation is 0, we translate this into 'none' 2328 * (unless literal is set), and indicate that it's the default 2329 * value. Otherwise, we print the number nicely and indicate 2330 * that its set locally. 2331 */ 2332 if (val == 0) { 2333 if (literal) 2334 (void) strlcpy(propbuf, "0", proplen); 2335 else 2336 (void) strlcpy(propbuf, "none", proplen); 2337 } else { 2338 if (literal) 2339 (void) snprintf(propbuf, proplen, "%llu", 2340 (u_longlong_t)val); 2341 else 2342 zfs_nicenum(val, propbuf, proplen); 2343 } 2344 break; 2345 2346 case ZFS_PROP_FILESYSTEM_LIMIT: 2347 case ZFS_PROP_SNAPSHOT_LIMIT: 2348 case ZFS_PROP_FILESYSTEM_COUNT: 2349 case ZFS_PROP_SNAPSHOT_COUNT: 2350 2351 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2352 return (-1); 2353 2354 /* 2355 * If limit is UINT64_MAX, we translate this into 'none' (unless 2356 * literal is set), and indicate that it's the default value. 2357 * Otherwise, we print the number nicely and indicate that it's 2358 * set locally. 2359 */ 2360 if (literal) { 2361 (void) snprintf(propbuf, proplen, "%llu", 2362 (u_longlong_t)val); 2363 } else if (val == UINT64_MAX) { 2364 (void) strlcpy(propbuf, "none", proplen); 2365 } else { 2366 zfs_nicenum(val, propbuf, proplen); 2367 } 2368 break; 2369 2370 case ZFS_PROP_REFRATIO: 2371 case ZFS_PROP_COMPRESSRATIO: 2372 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2373 return (-1); 2374 (void) snprintf(propbuf, proplen, "%llu.%02llux", 2375 (u_longlong_t)(val / 100), 2376 (u_longlong_t)(val % 100)); 2377 break; 2378 2379 case ZFS_PROP_TYPE: 2380 switch (zhp->zfs_type) { 2381 case ZFS_TYPE_FILESYSTEM: 2382 str = "filesystem"; 2383 break; 2384 case ZFS_TYPE_VOLUME: 2385 str = "volume"; 2386 break; 2387 case ZFS_TYPE_SNAPSHOT: 2388 str = "snapshot"; 2389 break; 2390 case ZFS_TYPE_BOOKMARK: 2391 str = "bookmark"; 2392 break; 2393 default: 2394 abort(); 2395 } 2396 (void) snprintf(propbuf, proplen, "%s", str); 2397 break; 2398 2399 case ZFS_PROP_MOUNTED: 2400 /* 2401 * The 'mounted' property is a pseudo-property that described 2402 * whether the filesystem is currently mounted. Even though 2403 * it's a boolean value, the typical values of "on" and "off" 2404 * don't make sense, so we translate to "yes" and "no". 2405 */ 2406 if (get_numeric_property(zhp, ZFS_PROP_MOUNTED, 2407 src, &source, &val) != 0) 2408 return (-1); 2409 if (val) 2410 (void) strlcpy(propbuf, "yes", proplen); 2411 else 2412 (void) strlcpy(propbuf, "no", proplen); 2413 break; 2414 2415 case ZFS_PROP_NAME: 2416 /* 2417 * The 'name' property is a pseudo-property derived from the 2418 * dataset name. It is presented as a real property to simplify 2419 * consumers. 2420 */ 2421 (void) strlcpy(propbuf, zhp->zfs_name, proplen); 2422 break; 2423 2424 case ZFS_PROP_MLSLABEL: 2425 { 2426#ifdef sun 2427 m_label_t *new_sl = NULL; 2428 char *ascii = NULL; /* human readable label */ 2429 2430 (void) strlcpy(propbuf, 2431 getprop_string(zhp, prop, &source), proplen); 2432 2433 if (literal || (strcasecmp(propbuf, 2434 ZFS_MLSLABEL_DEFAULT) == 0)) 2435 break; 2436 2437 /* 2438 * Try to translate the internal hex string to 2439 * human-readable output. If there are any 2440 * problems just use the hex string. 2441 */ 2442 2443 if (str_to_label(propbuf, &new_sl, MAC_LABEL, 2444 L_NO_CORRECTION, NULL) == -1) { 2445 m_label_free(new_sl); 2446 break; 2447 } 2448 2449 if (label_to_str(new_sl, &ascii, M_LABEL, 2450 DEF_NAMES) != 0) { 2451 if (ascii) 2452 free(ascii); 2453 m_label_free(new_sl); 2454 break; 2455 } 2456 m_label_free(new_sl); 2457 2458 (void) strlcpy(propbuf, ascii, proplen); 2459 free(ascii); 2460#else /* !sun */ 2461 propbuf[0] = '\0'; 2462#endif /* !sun */ 2463 } 2464 break; 2465 2466 case ZFS_PROP_GUID: 2467 /* 2468 * GUIDs are stored as numbers, but they are identifiers. 2469 * We don't want them to be pretty printed, because pretty 2470 * printing mangles the ID into a truncated and useless value. 2471 */ 2472 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2473 return (-1); 2474 (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t)val); 2475 break; 2476 2477 default: 2478 switch (zfs_prop_get_type(prop)) { 2479 case PROP_TYPE_NUMBER: 2480 if (get_numeric_property(zhp, prop, src, 2481 &source, &val) != 0) 2482 return (-1); 2483 if (literal) 2484 (void) snprintf(propbuf, proplen, "%llu", 2485 (u_longlong_t)val); 2486 else 2487 zfs_nicenum(val, propbuf, proplen); 2488 break; 2489 2490 case PROP_TYPE_STRING: 2491 (void) strlcpy(propbuf, 2492 getprop_string(zhp, prop, &source), proplen); 2493 break; 2494 2495 case PROP_TYPE_INDEX: 2496 if (get_numeric_property(zhp, prop, src, 2497 &source, &val) != 0) 2498 return (-1); 2499 if (zfs_prop_index_to_string(prop, val, &strval) != 0) 2500 return (-1); 2501 (void) strlcpy(propbuf, strval, proplen); 2502 break; 2503 2504 default: 2505 abort(); 2506 } 2507 } 2508 2509 get_source(zhp, src, source, statbuf, statlen); 2510 2511 return (0); 2512} 2513 2514/* 2515 * Utility function to get the given numeric property. Does no validation that 2516 * the given property is the appropriate type; should only be used with 2517 * hard-coded property types. 2518 */ 2519uint64_t 2520zfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop) 2521{ 2522 char *source; 2523 uint64_t val; 2524 2525 (void) get_numeric_property(zhp, prop, NULL, &source, &val); 2526 2527 return (val); 2528} 2529 2530int 2531zfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val) 2532{ 2533 char buf[64]; 2534 2535 (void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val); 2536 return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf)); 2537} 2538 2539/* 2540 * Similar to zfs_prop_get(), but returns the value as an integer. 2541 */ 2542int 2543zfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value, 2544 zprop_source_t *src, char *statbuf, size_t statlen) 2545{ 2546 char *source; 2547 2548 /* 2549 * Check to see if this property applies to our object 2550 */ 2551 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) { 2552 return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE, 2553 dgettext(TEXT_DOMAIN, "cannot get property '%s'"), 2554 zfs_prop_to_name(prop))); 2555 } 2556 2557 if (src) 2558 *src = ZPROP_SRC_NONE; 2559 2560 if (get_numeric_property(zhp, prop, src, &source, value) != 0) 2561 return (-1); 2562 2563 get_source(zhp, src, source, statbuf, statlen); 2564 2565 return (0); 2566} 2567 2568static int 2569idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser, 2570 char **domainp, idmap_rid_t *ridp) 2571{ 2572#ifdef sun 2573 idmap_get_handle_t *get_hdl = NULL; 2574 idmap_stat status; 2575 int err = EINVAL; 2576 2577 if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS) 2578 goto out; 2579 2580 if (isuser) { 2581 err = idmap_get_sidbyuid(get_hdl, id, 2582 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2583 } else { 2584 err = idmap_get_sidbygid(get_hdl, id, 2585 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2586 } 2587 if (err == IDMAP_SUCCESS && 2588 idmap_get_mappings(get_hdl) == IDMAP_SUCCESS && 2589 status == IDMAP_SUCCESS) 2590 err = 0; 2591 else 2592 err = EINVAL; 2593out: 2594 if (get_hdl) 2595 idmap_get_destroy(get_hdl); 2596 return (err); 2597#else /* !sun */ 2598 assert(!"invalid code path"); 2599 return (EINVAL); // silence compiler warning 2600#endif /* !sun */ 2601} 2602 2603/* 2604 * convert the propname into parameters needed by kernel 2605 * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829 2606 * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789 2607 */ 2608static int 2609userquota_propname_decode(const char *propname, boolean_t zoned, 2610 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp) 2611{ 2612 zfs_userquota_prop_t type; 2613 char *cp, *end; 2614 char *numericsid = NULL; 2615 boolean_t isuser; 2616 2617 domain[0] = '\0'; 2618 *ridp = 0; 2619 /* Figure out the property type ({user|group}{quota|space}) */ 2620 for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) { 2621 if (strncmp(propname, zfs_userquota_prop_prefixes[type], 2622 strlen(zfs_userquota_prop_prefixes[type])) == 0) 2623 break; 2624 } 2625 if (type == ZFS_NUM_USERQUOTA_PROPS) 2626 return (EINVAL); 2627 *typep = type; 2628 2629 isuser = (type == ZFS_PROP_USERQUOTA || 2630 type == ZFS_PROP_USERUSED); 2631 2632 cp = strchr(propname, '@') + 1; 2633 2634 if (strchr(cp, '@')) { 2635#ifdef sun 2636 /* 2637 * It's a SID name (eg "user@domain") that needs to be 2638 * turned into S-1-domainID-RID. 2639 */ 2640 int flag = 0; 2641 idmap_stat stat, map_stat; 2642 uid_t pid; 2643 idmap_rid_t rid; 2644 idmap_get_handle_t *gh = NULL; 2645 2646 stat = idmap_get_create(&gh); 2647 if (stat != IDMAP_SUCCESS) { 2648 idmap_get_destroy(gh); 2649 return (ENOMEM); 2650 } 2651 if (zoned && getzoneid() == GLOBAL_ZONEID) 2652 return (ENOENT); 2653 if (isuser) { 2654 stat = idmap_getuidbywinname(cp, NULL, flag, &pid); 2655 if (stat < 0) 2656 return (ENOENT); 2657 stat = idmap_get_sidbyuid(gh, pid, flag, &numericsid, 2658 &rid, &map_stat); 2659 } else { 2660 stat = idmap_getgidbywinname(cp, NULL, flag, &pid); 2661 if (stat < 0) 2662 return (ENOENT); 2663 stat = idmap_get_sidbygid(gh, pid, flag, &numericsid, 2664 &rid, &map_stat); 2665 } 2666 if (stat < 0) { 2667 idmap_get_destroy(gh); 2668 return (ENOENT); 2669 } 2670 stat = idmap_get_mappings(gh); 2671 idmap_get_destroy(gh); 2672 2673 if (stat < 0) { 2674 return (ENOENT); 2675 } 2676 if (numericsid == NULL) 2677 return (ENOENT); 2678 cp = numericsid; 2679 *ridp = rid; 2680 /* will be further decoded below */ 2681#else /* !sun */ 2682 return (ENOENT); 2683#endif /* !sun */ 2684 } 2685 2686 if (strncmp(cp, "S-1-", 4) == 0) { 2687 /* It's a numeric SID (eg "S-1-234-567-89") */ 2688 (void) strlcpy(domain, cp, domainlen); 2689 errno = 0; 2690 if (*ridp == 0) { 2691 cp = strrchr(domain, '-'); 2692 *cp = '\0'; 2693 cp++; 2694 *ridp = strtoull(cp, &end, 10); 2695 } else { 2696 end = ""; 2697 } 2698 if (numericsid) { 2699 free(numericsid); 2700 numericsid = NULL; 2701 } 2702 if (errno != 0 || *end != '\0') 2703 return (EINVAL); 2704 } else if (!isdigit(*cp)) { 2705 /* 2706 * It's a user/group name (eg "user") that needs to be 2707 * turned into a uid/gid 2708 */ 2709 if (zoned && getzoneid() == GLOBAL_ZONEID) 2710 return (ENOENT); 2711 if (isuser) { 2712 struct passwd *pw; 2713 pw = getpwnam(cp); 2714 if (pw == NULL) 2715 return (ENOENT); 2716 *ridp = pw->pw_uid; 2717 } else { 2718 struct group *gr; 2719 gr = getgrnam(cp); 2720 if (gr == NULL) 2721 return (ENOENT); 2722 *ridp = gr->gr_gid; 2723 } 2724 } else { 2725 /* It's a user/group ID (eg "12345"). */ 2726 uid_t id = strtoul(cp, &end, 10); 2727 idmap_rid_t rid; 2728 char *mapdomain; 2729 2730 if (*end != '\0') 2731 return (EINVAL); 2732 if (id > MAXUID) { 2733 /* It's an ephemeral ID. */ 2734 if (idmap_id_to_numeric_domain_rid(id, isuser, 2735 &mapdomain, &rid) != 0) 2736 return (ENOENT); 2737 (void) strlcpy(domain, mapdomain, domainlen); 2738 *ridp = rid; 2739 } else { 2740 *ridp = id; 2741 } 2742 } 2743 2744 ASSERT3P(numericsid, ==, NULL); 2745 return (0); 2746} 2747 2748static int 2749zfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname, 2750 uint64_t *propvalue, zfs_userquota_prop_t *typep) 2751{ 2752 int err; 2753 zfs_cmd_t zc = { 0 }; 2754 2755 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2756 2757 err = userquota_propname_decode(propname, 2758 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), 2759 typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid); 2760 zc.zc_objset_type = *typep; 2761 if (err) 2762 return (err); 2763 2764 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc); 2765 if (err) 2766 return (err); 2767 2768 *propvalue = zc.zc_cookie; 2769 return (0); 2770} 2771 2772int 2773zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname, 2774 uint64_t *propvalue) 2775{ 2776 zfs_userquota_prop_t type; 2777 2778 return (zfs_prop_get_userquota_common(zhp, propname, propvalue, 2779 &type)); 2780} 2781 2782int 2783zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname, 2784 char *propbuf, int proplen, boolean_t literal) 2785{ 2786 int err; 2787 uint64_t propvalue; 2788 zfs_userquota_prop_t type; 2789 2790 err = zfs_prop_get_userquota_common(zhp, propname, &propvalue, 2791 &type); 2792 2793 if (err) 2794 return (err); 2795 2796 if (literal) { 2797 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2798 } else if (propvalue == 0 && 2799 (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) { 2800 (void) strlcpy(propbuf, "none", proplen); 2801 } else { 2802 zfs_nicenum(propvalue, propbuf, proplen); 2803 } 2804 return (0); 2805} 2806 2807int 2808zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname, 2809 uint64_t *propvalue) 2810{ 2811 int err; 2812 zfs_cmd_t zc = { 0 }; 2813 const char *snapname; 2814 2815 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2816 2817 snapname = strchr(propname, '@') + 1; 2818 if (strchr(snapname, '@')) { 2819 (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); 2820 } else { 2821 /* snapname is the short name, append it to zhp's fsname */ 2822 char *cp; 2823 2824 (void) strlcpy(zc.zc_value, zhp->zfs_name, 2825 sizeof (zc.zc_value)); 2826 cp = strchr(zc.zc_value, '@'); 2827 if (cp != NULL) 2828 *cp = '\0'; 2829 (void) strlcat(zc.zc_value, "@", sizeof (zc.zc_value)); 2830 (void) strlcat(zc.zc_value, snapname, sizeof (zc.zc_value)); 2831 } 2832 2833 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SPACE_WRITTEN, &zc); 2834 if (err) 2835 return (err); 2836 2837 *propvalue = zc.zc_cookie; 2838 return (0); 2839} 2840 2841int 2842zfs_prop_get_written(zfs_handle_t *zhp, const char *propname, 2843 char *propbuf, int proplen, boolean_t literal) 2844{ 2845 int err; 2846 uint64_t propvalue; 2847 2848 err = zfs_prop_get_written_int(zhp, propname, &propvalue); 2849 2850 if (err) 2851 return (err); 2852 2853 if (literal) { 2854 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2855 } else { 2856 zfs_nicenum(propvalue, propbuf, proplen); 2857 } 2858 return (0); 2859} 2860 2861/* 2862 * Returns the name of the given zfs handle. 2863 */ 2864const char * 2865zfs_get_name(const zfs_handle_t *zhp) 2866{ 2867 return (zhp->zfs_name); 2868} 2869 2870/* 2871 * Returns the type of the given zfs handle. 2872 */ 2873zfs_type_t 2874zfs_get_type(const zfs_handle_t *zhp) 2875{ 2876 return (zhp->zfs_type); 2877} 2878 2879/* 2880 * Is one dataset name a child dataset of another? 2881 * 2882 * Needs to handle these cases: 2883 * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo" 2884 * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar" 2885 * Descendant? No. No. No. Yes. 2886 */ 2887static boolean_t 2888is_descendant(const char *ds1, const char *ds2) 2889{ 2890 size_t d1len = strlen(ds1); 2891 2892 /* ds2 can't be a descendant if it's smaller */ 2893 if (strlen(ds2) < d1len) 2894 return (B_FALSE); 2895 2896 /* otherwise, compare strings and verify that there's a '/' char */ 2897 return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0)); 2898} 2899 2900/* 2901 * Given a complete name, return just the portion that refers to the parent. 2902 * Will return -1 if there is no parent (path is just the name of the 2903 * pool). 2904 */ 2905static int 2906parent_name(const char *path, char *buf, size_t buflen) 2907{ 2908 char *slashp; 2909 2910 (void) strlcpy(buf, path, buflen); 2911 2912 if ((slashp = strrchr(buf, '/')) == NULL) 2913 return (-1); 2914 *slashp = '\0'; 2915 2916 return (0); 2917} 2918 2919/* 2920 * If accept_ancestor is false, then check to make sure that the given path has 2921 * a parent, and that it exists. If accept_ancestor is true, then find the 2922 * closest existing ancestor for the given path. In prefixlen return the 2923 * length of already existing prefix of the given path. We also fetch the 2924 * 'zoned' property, which is used to validate property settings when creating 2925 * new datasets. 2926 */ 2927static int 2928check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned, 2929 boolean_t accept_ancestor, int *prefixlen) 2930{ 2931 zfs_cmd_t zc = { 0 }; 2932 char parent[ZFS_MAXNAMELEN]; 2933 char *slash; 2934 zfs_handle_t *zhp; 2935 char errbuf[1024]; 2936 uint64_t is_zoned; 2937 2938 (void) snprintf(errbuf, sizeof (errbuf), 2939 dgettext(TEXT_DOMAIN, "cannot create '%s'"), path); 2940 2941 /* get parent, and check to see if this is just a pool */ 2942 if (parent_name(path, parent, sizeof (parent)) != 0) { 2943 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2944 "missing dataset name")); 2945 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 2946 } 2947 2948 /* check to see if the pool exists */ 2949 if ((slash = strchr(parent, '/')) == NULL) 2950 slash = parent + strlen(parent); 2951 (void) strncpy(zc.zc_name, parent, slash - parent); 2952 zc.zc_name[slash - parent] = '\0'; 2953 if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 && 2954 errno == ENOENT) { 2955 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2956 "no such pool '%s'"), zc.zc_name); 2957 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2958 } 2959 2960 /* check to see if the parent dataset exists */ 2961 while ((zhp = make_dataset_handle(hdl, parent)) == NULL) { 2962 if (errno == ENOENT && accept_ancestor) { 2963 /* 2964 * Go deeper to find an ancestor, give up on top level. 2965 */ 2966 if (parent_name(parent, parent, sizeof (parent)) != 0) { 2967 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2968 "no such pool '%s'"), zc.zc_name); 2969 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2970 } 2971 } else if (errno == ENOENT) { 2972 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2973 "parent does not exist")); 2974 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2975 } else 2976 return (zfs_standard_error(hdl, errno, errbuf)); 2977 } 2978 2979 is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 2980 if (zoned != NULL) 2981 *zoned = is_zoned; 2982 2983 /* we are in a non-global zone, but parent is in the global zone */ 2984 if (getzoneid() != GLOBAL_ZONEID && !is_zoned) { 2985 (void) zfs_standard_error(hdl, EPERM, errbuf); 2986 zfs_close(zhp); 2987 return (-1); 2988 } 2989 2990 /* make sure parent is a filesystem */ 2991 if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) { 2992 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2993 "parent is not a filesystem")); 2994 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 2995 zfs_close(zhp); 2996 return (-1); 2997 } 2998 2999 zfs_close(zhp); 3000 if (prefixlen != NULL) 3001 *prefixlen = strlen(parent); 3002 return (0); 3003} 3004 3005/* 3006 * Finds whether the dataset of the given type(s) exists. 3007 */ 3008boolean_t 3009zfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types) 3010{ 3011 zfs_handle_t *zhp; 3012 3013 if (!zfs_validate_name(hdl, path, types, B_FALSE)) 3014 return (B_FALSE); 3015 3016 /* 3017 * Try to get stats for the dataset, which will tell us if it exists. 3018 */ 3019 if ((zhp = make_dataset_handle(hdl, path)) != NULL) { 3020 int ds_type = zhp->zfs_type; 3021 3022 zfs_close(zhp); 3023 if (types & ds_type) 3024 return (B_TRUE); 3025 } 3026 return (B_FALSE); 3027} 3028 3029/* 3030 * Given a path to 'target', create all the ancestors between 3031 * the prefixlen portion of the path, and the target itself. 3032 * Fail if the initial prefixlen-ancestor does not already exist. 3033 */ 3034int 3035create_parents(libzfs_handle_t *hdl, char *target, int prefixlen) 3036{ 3037 zfs_handle_t *h; 3038 char *cp; 3039 const char *opname; 3040 3041 /* make sure prefix exists */ 3042 cp = target + prefixlen; 3043 if (*cp != '/') { 3044 assert(strchr(cp, '/') == NULL); 3045 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3046 } else { 3047 *cp = '\0'; 3048 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3049 *cp = '/'; 3050 } 3051 if (h == NULL) 3052 return (-1); 3053 zfs_close(h); 3054 3055 /* 3056 * Attempt to create, mount, and share any ancestor filesystems, 3057 * up to the prefixlen-long one. 3058 */ 3059 for (cp = target + prefixlen + 1; 3060 cp = strchr(cp, '/'); *cp = '/', cp++) { 3061 3062 *cp = '\0'; 3063 3064 h = make_dataset_handle(hdl, target); 3065 if (h) { 3066 /* it already exists, nothing to do here */ 3067 zfs_close(h); 3068 continue; 3069 } 3070 3071 if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM, 3072 NULL) != 0) { 3073 opname = dgettext(TEXT_DOMAIN, "create"); 3074 goto ancestorerr; 3075 } 3076 3077 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3078 if (h == NULL) { 3079 opname = dgettext(TEXT_DOMAIN, "open"); 3080 goto ancestorerr; 3081 } 3082 3083 if (zfs_mount(h, NULL, 0) != 0) { 3084 opname = dgettext(TEXT_DOMAIN, "mount"); 3085 goto ancestorerr; 3086 } 3087 3088 if (zfs_share(h) != 0) { 3089 opname = dgettext(TEXT_DOMAIN, "share"); 3090 goto ancestorerr; 3091 } 3092 3093 zfs_close(h); 3094 } 3095 3096 return (0); 3097 3098ancestorerr: 3099 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3100 "failed to %s ancestor '%s'"), opname, target); 3101 return (-1); 3102} 3103 3104/* 3105 * Creates non-existing ancestors of the given path. 3106 */ 3107int 3108zfs_create_ancestors(libzfs_handle_t *hdl, const char *path) 3109{ 3110 int prefix; 3111 char *path_copy; 3112 int rc; 3113 3114 if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0) 3115 return (-1); 3116 3117 if ((path_copy = strdup(path)) != NULL) { 3118 rc = create_parents(hdl, path_copy, prefix); 3119 free(path_copy); 3120 } 3121 if (path_copy == NULL || rc != 0) 3122 return (-1); 3123 3124 return (0); 3125} 3126 3127/* 3128 * Create a new filesystem or volume. 3129 */ 3130int 3131zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, 3132 nvlist_t *props) 3133{ 3134 int ret; 3135 uint64_t size = 0; 3136 uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE); 3137 char errbuf[1024]; 3138 uint64_t zoned; 3139 dmu_objset_type_t ost; 3140 3141 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3142 "cannot create '%s'"), path); 3143 3144 /* validate the path, taking care to note the extended error message */ 3145 if (!zfs_validate_name(hdl, path, type, B_TRUE)) 3146 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3147 3148 /* validate parents exist */ 3149 if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0) 3150 return (-1); 3151 3152 /* 3153 * The failure modes when creating a dataset of a different type over 3154 * one that already exists is a little strange. In particular, if you 3155 * try to create a dataset on top of an existing dataset, the ioctl() 3156 * will return ENOENT, not EEXIST. To prevent this from happening, we 3157 * first try to see if the dataset exists. 3158 */ 3159 if (zfs_dataset_exists(hdl, path, ZFS_TYPE_DATASET)) { 3160 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3161 "dataset already exists")); 3162 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3163 } 3164 3165 if (type == ZFS_TYPE_VOLUME) 3166 ost = DMU_OST_ZVOL; 3167 else 3168 ost = DMU_OST_ZFS; 3169 3170 if (props && (props = zfs_valid_proplist(hdl, type, props, 3171 zoned, NULL, errbuf)) == 0) 3172 return (-1); 3173 3174 if (type == ZFS_TYPE_VOLUME) { 3175 /* 3176 * If we are creating a volume, the size and block size must 3177 * satisfy a few restraints. First, the blocksize must be a 3178 * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the 3179 * volsize must be a multiple of the block size, and cannot be 3180 * zero. 3181 */ 3182 if (props == NULL || nvlist_lookup_uint64(props, 3183 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) { 3184 nvlist_free(props); 3185 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3186 "missing volume size")); 3187 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3188 } 3189 3190 if ((ret = nvlist_lookup_uint64(props, 3191 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3192 &blocksize)) != 0) { 3193 if (ret == ENOENT) { 3194 blocksize = zfs_prop_default_numeric( 3195 ZFS_PROP_VOLBLOCKSIZE); 3196 } else { 3197 nvlist_free(props); 3198 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3199 "missing volume block size")); 3200 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3201 } 3202 } 3203 3204 if (size == 0) { 3205 nvlist_free(props); 3206 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3207 "volume size cannot be zero")); 3208 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3209 } 3210 3211 if (size % blocksize != 0) { 3212 nvlist_free(props); 3213 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3214 "volume size must be a multiple of volume block " 3215 "size")); 3216 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3217 } 3218 } 3219 3220 /* create the dataset */ 3221 ret = lzc_create(path, ost, props); 3222 nvlist_free(props); 3223 3224 /* check for failure */ 3225 if (ret != 0) { 3226 char parent[ZFS_MAXNAMELEN]; 3227 (void) parent_name(path, parent, sizeof (parent)); 3228 3229 switch (errno) { 3230 case ENOENT: 3231 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3232 "no such parent '%s'"), parent); 3233 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3234 3235 case EINVAL: 3236 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3237 "parent '%s' is not a filesystem"), parent); 3238 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3239 3240 case EDOM: 3241 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3242 "volume block size must be power of 2 from " 3243 "512B to 128KB")); 3244 3245 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3246 3247 case ENOTSUP: 3248 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3249 "pool must be upgraded to set this " 3250 "property or value")); 3251 return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); 3252#ifdef _ILP32 3253 case EOVERFLOW: 3254 /* 3255 * This platform can't address a volume this big. 3256 */ 3257 if (type == ZFS_TYPE_VOLUME) 3258 return (zfs_error(hdl, EZFS_VOLTOOBIG, 3259 errbuf)); 3260#endif 3261 /* FALLTHROUGH */ 3262 default: 3263 return (zfs_standard_error(hdl, errno, errbuf)); 3264 } 3265 } 3266 3267 return (0); 3268} 3269 3270/* 3271 * Destroys the given dataset. The caller must make sure that the filesystem 3272 * isn't mounted, and that there are no active dependents. If the file system 3273 * does not exist this function does nothing. 3274 */ 3275int 3276zfs_destroy(zfs_handle_t *zhp, boolean_t defer) 3277{ 3278 zfs_cmd_t zc = { 0 }; 3279 3280 if (zhp->zfs_type == ZFS_TYPE_BOOKMARK) { 3281 nvlist_t *nv = fnvlist_alloc(); 3282 fnvlist_add_boolean(nv, zhp->zfs_name); 3283 int error = lzc_destroy_bookmarks(nv, NULL); 3284 fnvlist_free(nv); 3285 if (error != 0) { 3286 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3287 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3288 zhp->zfs_name)); 3289 } 3290 return (0); 3291 } 3292 3293 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3294 3295 if (ZFS_IS_VOLUME(zhp)) { 3296 zc.zc_objset_type = DMU_OST_ZVOL; 3297 } else { 3298 zc.zc_objset_type = DMU_OST_ZFS; 3299 } 3300 3301 zc.zc_defer_destroy = defer; 3302 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0 && 3303 errno != ENOENT) { 3304 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3305 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3306 zhp->zfs_name)); 3307 } 3308 3309 remove_mountpoint(zhp); 3310 3311 return (0); 3312} 3313 3314struct destroydata { 3315 nvlist_t *nvl; 3316 const char *snapname; 3317}; 3318 3319static int 3320zfs_check_snap_cb(zfs_handle_t *zhp, void *arg) 3321{ 3322 struct destroydata *dd = arg; 3323 char name[ZFS_MAXNAMELEN]; 3324 int rv = 0; 3325 3326 (void) snprintf(name, sizeof (name), 3327 "%s@%s", zhp->zfs_name, dd->snapname); 3328 3329 if (lzc_exists(name)) 3330 verify(nvlist_add_boolean(dd->nvl, name) == 0); 3331 3332 rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, dd); 3333 zfs_close(zhp); 3334 return (rv); 3335} 3336 3337/* 3338 * Destroys all snapshots with the given name in zhp & descendants. 3339 */ 3340int 3341zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer) 3342{ 3343 int ret; 3344 struct destroydata dd = { 0 }; 3345 3346 dd.snapname = snapname; 3347 verify(nvlist_alloc(&dd.nvl, NV_UNIQUE_NAME, 0) == 0); 3348 (void) zfs_check_snap_cb(zfs_handle_dup(zhp), &dd); 3349 3350 if (nvlist_empty(dd.nvl)) { 3351 ret = zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT, 3352 dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"), 3353 zhp->zfs_name, snapname); 3354 } else { 3355 ret = zfs_destroy_snaps_nvl(zhp->zfs_hdl, dd.nvl, defer); 3356 } 3357 nvlist_free(dd.nvl); 3358 return (ret); 3359} 3360 3361/* 3362 * Destroys all the snapshots named in the nvlist. 3363 */ 3364int 3365zfs_destroy_snaps_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, boolean_t defer) 3366{ 3367 int ret; 3368 nvlist_t *errlist; 3369 3370 ret = lzc_destroy_snaps(snaps, defer, &errlist); 3371 3372 if (ret == 0) 3373 return (0); 3374 3375 if (nvlist_empty(errlist)) { 3376 char errbuf[1024]; 3377 (void) snprintf(errbuf, sizeof (errbuf), 3378 dgettext(TEXT_DOMAIN, "cannot destroy snapshots")); 3379 3380 ret = zfs_standard_error(hdl, ret, errbuf); 3381 } 3382 for (nvpair_t *pair = nvlist_next_nvpair(errlist, NULL); 3383 pair != NULL; pair = nvlist_next_nvpair(errlist, pair)) { 3384 char errbuf[1024]; 3385 (void) snprintf(errbuf, sizeof (errbuf), 3386 dgettext(TEXT_DOMAIN, "cannot destroy snapshot %s"), 3387 nvpair_name(pair)); 3388 3389 switch (fnvpair_value_int32(pair)) { 3390 case EEXIST: 3391 zfs_error_aux(hdl, 3392 dgettext(TEXT_DOMAIN, "snapshot is cloned")); 3393 ret = zfs_error(hdl, EZFS_EXISTS, errbuf); 3394 break; 3395 default: 3396 ret = zfs_standard_error(hdl, errno, errbuf); 3397 break; 3398 } 3399 } 3400 3401 return (ret); 3402} 3403 3404/* 3405 * Clones the given dataset. The target must be of the same type as the source. 3406 */ 3407int 3408zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props) 3409{ 3410 char parent[ZFS_MAXNAMELEN]; 3411 int ret; 3412 char errbuf[1024]; 3413 libzfs_handle_t *hdl = zhp->zfs_hdl; 3414 uint64_t zoned; 3415 3416 assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); 3417 3418 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3419 "cannot create '%s'"), target); 3420 3421 /* validate the target/clone name */ 3422 if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE)) 3423 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3424 3425 /* validate parents exist */ 3426 if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0) 3427 return (-1); 3428 3429 (void) parent_name(target, parent, sizeof (parent)); 3430 3431 /* do the clone */ 3432 3433 if (props) { 3434 zfs_type_t type; 3435 if (ZFS_IS_VOLUME(zhp)) { 3436 type = ZFS_TYPE_VOLUME; 3437 } else { 3438 type = ZFS_TYPE_FILESYSTEM; 3439 } 3440 if ((props = zfs_valid_proplist(hdl, type, props, zoned, 3441 zhp, errbuf)) == NULL) 3442 return (-1); 3443 } 3444 3445 ret = lzc_clone(target, zhp->zfs_name, props); 3446 nvlist_free(props); 3447 3448 if (ret != 0) { 3449 switch (errno) { 3450 3451 case ENOENT: 3452 /* 3453 * The parent doesn't exist. We should have caught this 3454 * above, but there may a race condition that has since 3455 * destroyed the parent. 3456 * 3457 * At this point, we don't know whether it's the source 3458 * that doesn't exist anymore, or whether the target 3459 * dataset doesn't exist. 3460 */ 3461 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3462 "no such parent '%s'"), parent); 3463 return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); 3464 3465 case EXDEV: 3466 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3467 "source and target pools differ")); 3468 return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET, 3469 errbuf)); 3470 3471 default: 3472 return (zfs_standard_error(zhp->zfs_hdl, errno, 3473 errbuf)); 3474 } 3475 } 3476 3477 return (ret); 3478} 3479 3480/* 3481 * Promotes the given clone fs to be the clone parent. 3482 */ 3483int 3484zfs_promote(zfs_handle_t *zhp) 3485{ 3486 libzfs_handle_t *hdl = zhp->zfs_hdl; 3487 zfs_cmd_t zc = { 0 }; 3488 char parent[MAXPATHLEN]; 3489 int ret; 3490 char errbuf[1024]; 3491 3492 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3493 "cannot promote '%s'"), zhp->zfs_name); 3494 3495 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3496 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3497 "snapshots can not be promoted")); 3498 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3499 } 3500 3501 (void) strlcpy(parent, zhp->zfs_dmustats.dds_origin, sizeof (parent)); 3502 if (parent[0] == '\0') { 3503 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3504 "not a cloned filesystem")); 3505 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3506 } 3507 3508 (void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_origin, 3509 sizeof (zc.zc_value)); 3510 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3511 ret = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); 3512 3513 if (ret != 0) { 3514 int save_errno = errno; 3515 3516 switch (save_errno) { 3517 case EEXIST: 3518 /* There is a conflicting snapshot name. */ 3519 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3520 "conflicting snapshot '%s' from parent '%s'"), 3521 zc.zc_string, parent); 3522 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3523 3524 default: 3525 return (zfs_standard_error(hdl, save_errno, errbuf)); 3526 } 3527 } 3528 return (ret); 3529} 3530 3531typedef struct snapdata { 3532 nvlist_t *sd_nvl; 3533 const char *sd_snapname; 3534} snapdata_t; 3535 3536static int 3537zfs_snapshot_cb(zfs_handle_t *zhp, void *arg) 3538{ 3539 snapdata_t *sd = arg; 3540 char name[ZFS_MAXNAMELEN]; 3541 int rv = 0; 3542 3543 if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) == 0) { 3544 (void) snprintf(name, sizeof (name), 3545 "%s@%s", zfs_get_name(zhp), sd->sd_snapname); 3546 3547 fnvlist_add_boolean(sd->sd_nvl, name); 3548 3549 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd); 3550 } 3551 zfs_close(zhp); 3552 3553 return (rv); 3554} 3555 3556/* 3557 * Creates snapshots. The keys in the snaps nvlist are the snapshots to be 3558 * created. 3559 */ 3560int 3561zfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, nvlist_t *props) 3562{ 3563 int ret; 3564 char errbuf[1024]; 3565 nvpair_t *elem; 3566 nvlist_t *errors; 3567 3568 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3569 "cannot create snapshots ")); 3570 3571 elem = NULL; 3572 while ((elem = nvlist_next_nvpair(snaps, elem)) != NULL) { 3573 const char *snapname = nvpair_name(elem); 3574 3575 /* validate the target name */ 3576 if (!zfs_validate_name(hdl, snapname, ZFS_TYPE_SNAPSHOT, 3577 B_TRUE)) { 3578 (void) snprintf(errbuf, sizeof (errbuf), 3579 dgettext(TEXT_DOMAIN, 3580 "cannot create snapshot '%s'"), snapname); 3581 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3582 } 3583 } 3584 3585 if (props != NULL && 3586 (props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT, 3587 props, B_FALSE, NULL, errbuf)) == NULL) { 3588 return (-1); 3589 } 3590 3591 ret = lzc_snapshot(snaps, props, &errors); 3592 3593 if (ret != 0) { 3594 boolean_t printed = B_FALSE; 3595 for (elem = nvlist_next_nvpair(errors, NULL); 3596 elem != NULL; 3597 elem = nvlist_next_nvpair(errors, elem)) { 3598 (void) snprintf(errbuf, sizeof (errbuf), 3599 dgettext(TEXT_DOMAIN, 3600 "cannot create snapshot '%s'"), nvpair_name(elem)); 3601 (void) zfs_standard_error(hdl, 3602 fnvpair_value_int32(elem), errbuf); 3603 printed = B_TRUE; 3604 } 3605 if (!printed) { 3606 switch (ret) { 3607 case EXDEV: 3608 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3609 "multiple snapshots of same " 3610 "fs not allowed")); 3611 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 3612 3613 break; 3614 default: 3615 (void) zfs_standard_error(hdl, ret, errbuf); 3616 } 3617 } 3618 } 3619 3620 nvlist_free(props); 3621 nvlist_free(errors); 3622 return (ret); 3623} 3624 3625int 3626zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive, 3627 nvlist_t *props) 3628{ 3629 int ret; 3630 snapdata_t sd = { 0 }; 3631 char fsname[ZFS_MAXNAMELEN]; 3632 char *cp; 3633 zfs_handle_t *zhp; 3634 char errbuf[1024]; 3635 3636 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3637 "cannot snapshot %s"), path); 3638 3639 if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE)) 3640 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3641 3642 (void) strlcpy(fsname, path, sizeof (fsname)); 3643 cp = strchr(fsname, '@'); 3644 *cp = '\0'; 3645 sd.sd_snapname = cp + 1; 3646 3647 if ((zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM | 3648 ZFS_TYPE_VOLUME)) == NULL) { 3649 return (-1); 3650 } 3651 3652 verify(nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) == 0); 3653 if (recursive) { 3654 (void) zfs_snapshot_cb(zfs_handle_dup(zhp), &sd); 3655 } else { 3656 fnvlist_add_boolean(sd.sd_nvl, path); 3657 } 3658 3659 ret = zfs_snapshot_nvl(hdl, sd.sd_nvl, props); 3660 nvlist_free(sd.sd_nvl); 3661 zfs_close(zhp); 3662 return (ret); 3663} 3664 3665/* 3666 * Destroy any more recent snapshots. We invoke this callback on any dependents 3667 * of the snapshot first. If the 'cb_dependent' member is non-zero, then this 3668 * is a dependent and we should just destroy it without checking the transaction 3669 * group. 3670 */ 3671typedef struct rollback_data { 3672 const char *cb_target; /* the snapshot */ 3673 uint64_t cb_create; /* creation time reference */ 3674 boolean_t cb_error; 3675 boolean_t cb_force; 3676} rollback_data_t; 3677 3678static int 3679rollback_destroy_dependent(zfs_handle_t *zhp, void *data) 3680{ 3681 rollback_data_t *cbp = data; 3682 prop_changelist_t *clp; 3683 3684 /* We must destroy this clone; first unmount it */ 3685 clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, 3686 cbp->cb_force ? MS_FORCE: 0); 3687 if (clp == NULL || changelist_prefix(clp) != 0) { 3688 cbp->cb_error = B_TRUE; 3689 zfs_close(zhp); 3690 return (0); 3691 } 3692 if (zfs_destroy(zhp, B_FALSE) != 0) 3693 cbp->cb_error = B_TRUE; 3694 else 3695 changelist_remove(clp, zhp->zfs_name); 3696 (void) changelist_postfix(clp); 3697 changelist_free(clp); 3698 3699 zfs_close(zhp); 3700 return (0); 3701} 3702 3703static int 3704rollback_destroy(zfs_handle_t *zhp, void *data) 3705{ 3706 rollback_data_t *cbp = data; 3707 3708 if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) { 3709 cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE, 3710 rollback_destroy_dependent, cbp); 3711 3712 cbp->cb_error |= zfs_destroy(zhp, B_FALSE); 3713 } 3714 3715 zfs_close(zhp); 3716 return (0); 3717} 3718 3719/* 3720 * Given a dataset, rollback to a specific snapshot, discarding any 3721 * data changes since then and making it the active dataset. 3722 * 3723 * Any snapshots and bookmarks more recent than the target are 3724 * destroyed, along with their dependents (i.e. clones). 3725 */ 3726int 3727zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) 3728{ 3729 rollback_data_t cb = { 0 }; 3730 int err; 3731 boolean_t restore_resv = 0; 3732 uint64_t old_volsize, new_volsize; 3733 zfs_prop_t resv_prop; 3734 3735 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM || 3736 zhp->zfs_type == ZFS_TYPE_VOLUME); 3737 3738 /* 3739 * Destroy all recent snapshots and their dependents. 3740 */ 3741 cb.cb_force = force; 3742 cb.cb_target = snap->zfs_name; 3743 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 3744 (void) zfs_iter_snapshots(zhp, B_FALSE, rollback_destroy, &cb); 3745 (void) zfs_iter_bookmarks(zhp, rollback_destroy, &cb); 3746 3747 if (cb.cb_error) 3748 return (-1); 3749 3750 /* 3751 * Now that we have verified that the snapshot is the latest, 3752 * rollback to the given snapshot. 3753 */ 3754 3755 if (zhp->zfs_type == ZFS_TYPE_VOLUME) { 3756 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 3757 return (-1); 3758 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3759 restore_resv = 3760 (old_volsize == zfs_prop_get_int(zhp, resv_prop)); 3761 } 3762 3763 /* 3764 * We rely on zfs_iter_children() to verify that there are no 3765 * newer snapshots for the given dataset. Therefore, we can 3766 * simply pass the name on to the ioctl() call. There is still 3767 * an unlikely race condition where the user has taken a 3768 * snapshot since we verified that this was the most recent. 3769 */ 3770 err = lzc_rollback(zhp->zfs_name, NULL, 0); 3771 if (err != 0) { 3772 (void) zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3773 dgettext(TEXT_DOMAIN, "cannot rollback '%s'"), 3774 zhp->zfs_name); 3775 return (err); 3776 } 3777 3778 /* 3779 * For volumes, if the pre-rollback volsize matched the pre- 3780 * rollback reservation and the volsize has changed then set 3781 * the reservation property to the post-rollback volsize. 3782 * Make a new handle since the rollback closed the dataset. 3783 */ 3784 if ((zhp->zfs_type == ZFS_TYPE_VOLUME) && 3785 (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) { 3786 if (restore_resv) { 3787 new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3788 if (old_volsize != new_volsize) 3789 err = zfs_prop_set_int(zhp, resv_prop, 3790 new_volsize); 3791 } 3792 zfs_close(zhp); 3793 } 3794 return (err); 3795} 3796 3797/* 3798 * Renames the given dataset. 3799 */ 3800int 3801zfs_rename(zfs_handle_t *zhp, const char *source, const char *target, 3802 renameflags_t flags) 3803{ 3804 int ret; 3805 zfs_cmd_t zc = { 0 }; 3806 char *delim; 3807 prop_changelist_t *cl = NULL; 3808 zfs_handle_t *zhrp = NULL; 3809 char *parentname = NULL; 3810 char parent[ZFS_MAXNAMELEN]; 3811 char property[ZFS_MAXPROPLEN]; 3812 libzfs_handle_t *hdl = zhp->zfs_hdl; 3813 char errbuf[1024]; 3814 3815 /* if we have the same exact name, just return success */ 3816 if (strcmp(zhp->zfs_name, target) == 0) 3817 return (0); 3818 3819 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3820 "cannot rename to '%s'"), target); 3821 3822 if (source != NULL) { 3823 /* 3824 * This is recursive snapshots rename, put snapshot name 3825 * (that might not exist) into zfs_name. 3826 */ 3827 assert(flags.recurse); 3828 3829 (void) strlcat(zhp->zfs_name, "@", sizeof(zhp->zfs_name)); 3830 (void) strlcat(zhp->zfs_name, source, sizeof(zhp->zfs_name)); 3831 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 3832 } 3833 3834 /* 3835 * Make sure the target name is valid 3836 */ 3837 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3838 if ((strchr(target, '@') == NULL) || 3839 *target == '@') { 3840 /* 3841 * Snapshot target name is abbreviated, 3842 * reconstruct full dataset name 3843 */ 3844 (void) strlcpy(parent, zhp->zfs_name, 3845 sizeof (parent)); 3846 delim = strchr(parent, '@'); 3847 if (strchr(target, '@') == NULL) 3848 *(++delim) = '\0'; 3849 else 3850 *delim = '\0'; 3851 (void) strlcat(parent, target, sizeof (parent)); 3852 target = parent; 3853 } else { 3854 /* 3855 * Make sure we're renaming within the same dataset. 3856 */ 3857 delim = strchr(target, '@'); 3858 if (strncmp(zhp->zfs_name, target, delim - target) 3859 != 0 || zhp->zfs_name[delim - target] != '@') { 3860 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3861 "snapshots must be part of same " 3862 "dataset")); 3863 return (zfs_error(hdl, EZFS_CROSSTARGET, 3864 errbuf)); 3865 } 3866 } 3867 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3868 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3869 } else { 3870 if (flags.recurse) { 3871 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3872 "recursive rename must be a snapshot")); 3873 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3874 } 3875 3876 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3877 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3878 3879 /* validate parents */ 3880 if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0) 3881 return (-1); 3882 3883 /* make sure we're in the same pool */ 3884 verify((delim = strchr(target, '/')) != NULL); 3885 if (strncmp(zhp->zfs_name, target, delim - target) != 0 || 3886 zhp->zfs_name[delim - target] != '/') { 3887 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3888 "datasets must be within same pool")); 3889 return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); 3890 } 3891 3892 /* new name cannot be a child of the current dataset name */ 3893 if (is_descendant(zhp->zfs_name, target)) { 3894 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3895 "New dataset name cannot be a descendant of " 3896 "current dataset name")); 3897 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3898 } 3899 } 3900 3901 (void) snprintf(errbuf, sizeof (errbuf), 3902 dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name); 3903 3904 if (getzoneid() == GLOBAL_ZONEID && 3905 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 3906 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3907 "dataset is used in a non-global zone")); 3908 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 3909 } 3910 3911 /* 3912 * Avoid unmounting file systems with mountpoint property set to 3913 * 'legacy' or 'none' even if -u option is not given. 3914 */ 3915 if (zhp->zfs_type == ZFS_TYPE_FILESYSTEM && 3916 !flags.recurse && !flags.nounmount && 3917 zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, property, 3918 sizeof (property), NULL, NULL, 0, B_FALSE) == 0 && 3919 (strcmp(property, "legacy") == 0 || 3920 strcmp(property, "none") == 0)) { 3921 flags.nounmount = B_TRUE; 3922 } 3923 if (flags.recurse) { 3924 3925 parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name); 3926 if (parentname == NULL) { 3927 ret = -1; 3928 goto error; 3929 } 3930 delim = strchr(parentname, '@'); 3931 *delim = '\0'; 3932 zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET); 3933 if (zhrp == NULL) { 3934 ret = -1; 3935 goto error; 3936 } 3937 } else if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) { 3938 if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 3939 flags.nounmount ? CL_GATHER_DONT_UNMOUNT : 0, 3940 flags.forceunmount ? MS_FORCE : 0)) == NULL) { 3941 return (-1); 3942 } 3943 3944 if (changelist_haszonedchild(cl)) { 3945 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3946 "child dataset with inherited mountpoint is used " 3947 "in a non-global zone")); 3948 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 3949 goto error; 3950 } 3951 3952 if ((ret = changelist_prefix(cl)) != 0) 3953 goto error; 3954 } 3955 3956 if (ZFS_IS_VOLUME(zhp)) 3957 zc.zc_objset_type = DMU_OST_ZVOL; 3958 else 3959 zc.zc_objset_type = DMU_OST_ZFS; 3960 3961 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3962 (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value)); 3963 3964 zc.zc_cookie = flags.recurse ? 1 : 0; 3965 if (flags.nounmount) 3966 zc.zc_cookie |= 2; 3967 3968 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) { 3969 /* 3970 * if it was recursive, the one that actually failed will 3971 * be in zc.zc_name 3972 */ 3973 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3974 "cannot rename '%s'"), zc.zc_name); 3975 3976 if (flags.recurse && errno == EEXIST) { 3977 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3978 "a child dataset already has a snapshot " 3979 "with the new name")); 3980 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 3981 } else { 3982 (void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf); 3983 } 3984 3985 /* 3986 * On failure, we still want to remount any filesystems that 3987 * were previously mounted, so we don't alter the system state. 3988 */ 3989 if (cl != NULL) 3990 (void) changelist_postfix(cl); 3991 } else { 3992 if (cl != NULL) { 3993 changelist_rename(cl, zfs_get_name(zhp), target); 3994 ret = changelist_postfix(cl); 3995 } 3996 } 3997 3998error: 3999 if (parentname != NULL) { 4000 free(parentname); 4001 } 4002 if (zhrp != NULL) { 4003 zfs_close(zhrp); 4004 } 4005 if (cl != NULL) { 4006 changelist_free(cl); 4007 } 4008 return (ret); 4009} 4010 4011nvlist_t * 4012zfs_get_user_props(zfs_handle_t *zhp) 4013{ 4014 return (zhp->zfs_user_props); 4015} 4016 4017nvlist_t * 4018zfs_get_recvd_props(zfs_handle_t *zhp) 4019{ 4020 if (zhp->zfs_recvd_props == NULL) 4021 if (get_recvd_props_ioctl(zhp) != 0) 4022 return (NULL); 4023 return (zhp->zfs_recvd_props); 4024} 4025 4026/* 4027 * This function is used by 'zfs list' to determine the exact set of columns to 4028 * display, and their maximum widths. This does two main things: 4029 * 4030 * - If this is a list of all properties, then expand the list to include 4031 * all native properties, and set a flag so that for each dataset we look 4032 * for new unique user properties and add them to the list. 4033 * 4034 * - For non fixed-width properties, keep track of the maximum width seen 4035 * so that we can size the column appropriately. If the user has 4036 * requested received property values, we also need to compute the width 4037 * of the RECEIVED column. 4038 */ 4039int 4040zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received, 4041 boolean_t literal) 4042{ 4043 libzfs_handle_t *hdl = zhp->zfs_hdl; 4044 zprop_list_t *entry; 4045 zprop_list_t **last, **start; 4046 nvlist_t *userprops, *propval; 4047 nvpair_t *elem; 4048 char *strval; 4049 char buf[ZFS_MAXPROPLEN]; 4050 4051 if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0) 4052 return (-1); 4053 4054 userprops = zfs_get_user_props(zhp); 4055 4056 entry = *plp; 4057 if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) { 4058 /* 4059 * Go through and add any user properties as necessary. We 4060 * start by incrementing our list pointer to the first 4061 * non-native property. 4062 */ 4063 start = plp; 4064 while (*start != NULL) { 4065 if ((*start)->pl_prop == ZPROP_INVAL) 4066 break; 4067 start = &(*start)->pl_next; 4068 } 4069 4070 elem = NULL; 4071 while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) { 4072 /* 4073 * See if we've already found this property in our list. 4074 */ 4075 for (last = start; *last != NULL; 4076 last = &(*last)->pl_next) { 4077 if (strcmp((*last)->pl_user_prop, 4078 nvpair_name(elem)) == 0) 4079 break; 4080 } 4081 4082 if (*last == NULL) { 4083 if ((entry = zfs_alloc(hdl, 4084 sizeof (zprop_list_t))) == NULL || 4085 ((entry->pl_user_prop = zfs_strdup(hdl, 4086 nvpair_name(elem)))) == NULL) { 4087 free(entry); 4088 return (-1); 4089 } 4090 4091 entry->pl_prop = ZPROP_INVAL; 4092 entry->pl_width = strlen(nvpair_name(elem)); 4093 entry->pl_all = B_TRUE; 4094 *last = entry; 4095 } 4096 } 4097 } 4098 4099 /* 4100 * Now go through and check the width of any non-fixed columns 4101 */ 4102 for (entry = *plp; entry != NULL; entry = entry->pl_next) { 4103 if (entry->pl_fixed && !literal) 4104 continue; 4105 4106 if (entry->pl_prop != ZPROP_INVAL) { 4107 if (zfs_prop_get(zhp, entry->pl_prop, 4108 buf, sizeof (buf), NULL, NULL, 0, literal) == 0) { 4109 if (strlen(buf) > entry->pl_width) 4110 entry->pl_width = strlen(buf); 4111 } 4112 if (received && zfs_prop_get_recvd(zhp, 4113 zfs_prop_to_name(entry->pl_prop), 4114 buf, sizeof (buf), literal) == 0) 4115 if (strlen(buf) > entry->pl_recvd_width) 4116 entry->pl_recvd_width = strlen(buf); 4117 } else { 4118 if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop, 4119 &propval) == 0) { 4120 verify(nvlist_lookup_string(propval, 4121 ZPROP_VALUE, &strval) == 0); 4122 if (strlen(strval) > entry->pl_width) 4123 entry->pl_width = strlen(strval); 4124 } 4125 if (received && zfs_prop_get_recvd(zhp, 4126 entry->pl_user_prop, 4127 buf, sizeof (buf), literal) == 0) 4128 if (strlen(buf) > entry->pl_recvd_width) 4129 entry->pl_recvd_width = strlen(buf); 4130 } 4131 } 4132 4133 return (0); 4134} 4135 4136int 4137zfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path, 4138 char *resource, void *export, void *sharetab, 4139 int sharemax, zfs_share_op_t operation) 4140{ 4141 zfs_cmd_t zc = { 0 }; 4142 int error; 4143 4144 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4145 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4146 if (resource) 4147 (void) strlcpy(zc.zc_string, resource, sizeof (zc.zc_string)); 4148 zc.zc_share.z_sharedata = (uint64_t)(uintptr_t)sharetab; 4149 zc.zc_share.z_exportdata = (uint64_t)(uintptr_t)export; 4150 zc.zc_share.z_sharetype = operation; 4151 zc.zc_share.z_sharemax = sharemax; 4152 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SHARE, &zc); 4153 return (error); 4154} 4155 4156void 4157zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props) 4158{ 4159 nvpair_t *curr; 4160 4161 /* 4162 * Keep a reference to the props-table against which we prune the 4163 * properties. 4164 */ 4165 zhp->zfs_props_table = props; 4166 4167 curr = nvlist_next_nvpair(zhp->zfs_props, NULL); 4168 4169 while (curr) { 4170 zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr)); 4171 nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr); 4172 4173 /* 4174 * User properties will result in ZPROP_INVAL, and since we 4175 * only know how to prune standard ZFS properties, we always 4176 * leave these in the list. This can also happen if we 4177 * encounter an unknown DSL property (when running older 4178 * software, for example). 4179 */ 4180 if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE) 4181 (void) nvlist_remove(zhp->zfs_props, 4182 nvpair_name(curr), nvpair_type(curr)); 4183 curr = next; 4184 } 4185} 4186 4187#ifdef sun 4188static int 4189zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path, 4190 zfs_smb_acl_op_t cmd, char *resource1, char *resource2) 4191{ 4192 zfs_cmd_t zc = { 0 }; 4193 nvlist_t *nvlist = NULL; 4194 int error; 4195 4196 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4197 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4198 zc.zc_cookie = (uint64_t)cmd; 4199 4200 if (cmd == ZFS_SMB_ACL_RENAME) { 4201 if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) { 4202 (void) no_memory(hdl); 4203 return (NULL); 4204 } 4205 } 4206 4207 switch (cmd) { 4208 case ZFS_SMB_ACL_ADD: 4209 case ZFS_SMB_ACL_REMOVE: 4210 (void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string)); 4211 break; 4212 case ZFS_SMB_ACL_RENAME: 4213 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC, 4214 resource1) != 0) { 4215 (void) no_memory(hdl); 4216 return (-1); 4217 } 4218 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET, 4219 resource2) != 0) { 4220 (void) no_memory(hdl); 4221 return (-1); 4222 } 4223 if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) { 4224 nvlist_free(nvlist); 4225 return (-1); 4226 } 4227 break; 4228 case ZFS_SMB_ACL_PURGE: 4229 break; 4230 default: 4231 return (-1); 4232 } 4233 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc); 4234 if (nvlist) 4235 nvlist_free(nvlist); 4236 return (error); 4237} 4238 4239int 4240zfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset, 4241 char *path, char *resource) 4242{ 4243 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD, 4244 resource, NULL)); 4245} 4246 4247int 4248zfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset, 4249 char *path, char *resource) 4250{ 4251 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE, 4252 resource, NULL)); 4253} 4254 4255int 4256zfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path) 4257{ 4258 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE, 4259 NULL, NULL)); 4260} 4261 4262int 4263zfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path, 4264 char *oldname, char *newname) 4265{ 4266 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME, 4267 oldname, newname)); 4268} 4269#endif /* sun */ 4270 4271int 4272zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type, 4273 zfs_userspace_cb_t func, void *arg) 4274{ 4275 zfs_cmd_t zc = { 0 }; 4276 zfs_useracct_t buf[100]; 4277 libzfs_handle_t *hdl = zhp->zfs_hdl; 4278 int ret; 4279 4280 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4281 4282 zc.zc_objset_type = type; 4283 zc.zc_nvlist_dst = (uintptr_t)buf; 4284 4285 for (;;) { 4286 zfs_useracct_t *zua = buf; 4287 4288 zc.zc_nvlist_dst_size = sizeof (buf); 4289 if (zfs_ioctl(hdl, ZFS_IOC_USERSPACE_MANY, &zc) != 0) { 4290 char errbuf[1024]; 4291 4292 (void) snprintf(errbuf, sizeof (errbuf), 4293 dgettext(TEXT_DOMAIN, 4294 "cannot get used/quota for %s"), zc.zc_name); 4295 return (zfs_standard_error_fmt(hdl, errno, errbuf)); 4296 } 4297 if (zc.zc_nvlist_dst_size == 0) 4298 break; 4299 4300 while (zc.zc_nvlist_dst_size > 0) { 4301 if ((ret = func(arg, zua->zu_domain, zua->zu_rid, 4302 zua->zu_space)) != 0) 4303 return (ret); 4304 zua++; 4305 zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t); 4306 } 4307 } 4308 4309 return (0); 4310} 4311 4312struct holdarg { 4313 nvlist_t *nvl; 4314 const char *snapname; 4315 const char *tag; 4316 boolean_t recursive; 4317 int error; 4318}; 4319 4320static int 4321zfs_hold_one(zfs_handle_t *zhp, void *arg) 4322{ 4323 struct holdarg *ha = arg; 4324 char name[ZFS_MAXNAMELEN]; 4325 int rv = 0; 4326 4327 (void) snprintf(name, sizeof (name), 4328 "%s@%s", zhp->zfs_name, ha->snapname); 4329 4330 if (lzc_exists(name)) 4331 fnvlist_add_string(ha->nvl, name, ha->tag); 4332 4333 if (ha->recursive) 4334 rv = zfs_iter_filesystems(zhp, zfs_hold_one, ha); 4335 zfs_close(zhp); 4336 return (rv); 4337} 4338 4339int 4340zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag, 4341 boolean_t recursive, int cleanup_fd) 4342{ 4343 int ret; 4344 struct holdarg ha; 4345 4346 ha.nvl = fnvlist_alloc(); 4347 ha.snapname = snapname; 4348 ha.tag = tag; 4349 ha.recursive = recursive; 4350 (void) zfs_hold_one(zfs_handle_dup(zhp), &ha); 4351 4352 if (nvlist_empty(ha.nvl)) { 4353 char errbuf[1024]; 4354 4355 fnvlist_free(ha.nvl); 4356 ret = ENOENT; 4357 (void) snprintf(errbuf, sizeof (errbuf), 4358 dgettext(TEXT_DOMAIN, 4359 "cannot hold snapshot '%s@%s'"), 4360 zhp->zfs_name, snapname); 4361 (void) zfs_standard_error(zhp->zfs_hdl, ret, errbuf); 4362 return (ret); 4363 } 4364 4365 ret = zfs_hold_nvl(zhp, cleanup_fd, ha.nvl); 4366 fnvlist_free(ha.nvl); 4367 4368 return (ret); 4369} 4370 4371int 4372zfs_hold_nvl(zfs_handle_t *zhp, int cleanup_fd, nvlist_t *holds) 4373{ 4374 int ret; 4375 nvlist_t *errors; 4376 libzfs_handle_t *hdl = zhp->zfs_hdl; 4377 char errbuf[1024]; 4378 nvpair_t *elem; 4379 4380 errors = NULL; 4381 ret = lzc_hold(holds, cleanup_fd, &errors); 4382 4383 if (ret == 0) { 4384 /* There may be errors even in the success case. */ 4385 fnvlist_free(errors); 4386 return (0); 4387 } 4388 4389 if (nvlist_empty(errors)) { 4390 /* no hold-specific errors */ 4391 (void) snprintf(errbuf, sizeof (errbuf), 4392 dgettext(TEXT_DOMAIN, "cannot hold")); 4393 switch (ret) { 4394 case ENOTSUP: 4395 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4396 "pool must be upgraded")); 4397 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4398 break; 4399 case EINVAL: 4400 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4401 break; 4402 default: 4403 (void) zfs_standard_error(hdl, ret, errbuf); 4404 } 4405 } 4406 4407 for (elem = nvlist_next_nvpair(errors, NULL); 4408 elem != NULL; 4409 elem = nvlist_next_nvpair(errors, elem)) { 4410 (void) snprintf(errbuf, sizeof (errbuf), 4411 dgettext(TEXT_DOMAIN, 4412 "cannot hold snapshot '%s'"), nvpair_name(elem)); 4413 switch (fnvpair_value_int32(elem)) { 4414 case E2BIG: 4415 /* 4416 * Temporary tags wind up having the ds object id 4417 * prepended. So even if we passed the length check 4418 * above, it's still possible for the tag to wind 4419 * up being slightly too long. 4420 */ 4421 (void) zfs_error(hdl, EZFS_TAGTOOLONG, errbuf); 4422 break; 4423 case EINVAL: 4424 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4425 break; 4426 case EEXIST: 4427 (void) zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf); 4428 break; 4429 default: 4430 (void) zfs_standard_error(hdl, 4431 fnvpair_value_int32(elem), errbuf); 4432 } 4433 } 4434 4435 fnvlist_free(errors); 4436 return (ret); 4437} 4438 4439static int 4440zfs_release_one(zfs_handle_t *zhp, void *arg) 4441{ 4442 struct holdarg *ha = arg; 4443 char name[ZFS_MAXNAMELEN]; 4444 int rv = 0; 4445 nvlist_t *existing_holds; 4446 4447 (void) snprintf(name, sizeof (name), 4448 "%s@%s", zhp->zfs_name, ha->snapname); 4449 4450 if (lzc_get_holds(name, &existing_holds) != 0) { 4451 ha->error = ENOENT; 4452 } else if (!nvlist_exists(existing_holds, ha->tag)) { 4453 ha->error = ESRCH; 4454 } else { 4455 nvlist_t *torelease = fnvlist_alloc(); 4456 fnvlist_add_boolean(torelease, ha->tag); 4457 fnvlist_add_nvlist(ha->nvl, name, torelease); 4458 fnvlist_free(torelease); 4459 } 4460 4461 if (ha->recursive) 4462 rv = zfs_iter_filesystems(zhp, zfs_release_one, ha); 4463 zfs_close(zhp); 4464 return (rv); 4465} 4466 4467int 4468zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag, 4469 boolean_t recursive) 4470{ 4471 int ret; 4472 struct holdarg ha; 4473 nvlist_t *errors = NULL; 4474 nvpair_t *elem; 4475 libzfs_handle_t *hdl = zhp->zfs_hdl; 4476 char errbuf[1024]; 4477 4478 ha.nvl = fnvlist_alloc(); 4479 ha.snapname = snapname; 4480 ha.tag = tag; 4481 ha.recursive = recursive; 4482 ha.error = 0; 4483 (void) zfs_release_one(zfs_handle_dup(zhp), &ha); 4484 4485 if (nvlist_empty(ha.nvl)) { 4486 fnvlist_free(ha.nvl); 4487 ret = ha.error; 4488 (void) snprintf(errbuf, sizeof (errbuf), 4489 dgettext(TEXT_DOMAIN, 4490 "cannot release hold from snapshot '%s@%s'"), 4491 zhp->zfs_name, snapname); 4492 if (ret == ESRCH) { 4493 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4494 } else { 4495 (void) zfs_standard_error(hdl, ret, errbuf); 4496 } 4497 return (ret); 4498 } 4499 4500 ret = lzc_release(ha.nvl, &errors); 4501 fnvlist_free(ha.nvl); 4502 4503 if (ret == 0) { 4504 /* There may be errors even in the success case. */ 4505 fnvlist_free(errors); 4506 return (0); 4507 } 4508 4509 if (nvlist_empty(errors)) { 4510 /* no hold-specific errors */ 4511 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4512 "cannot release")); 4513 switch (errno) { 4514 case ENOTSUP: 4515 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4516 "pool must be upgraded")); 4517 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4518 break; 4519 default: 4520 (void) zfs_standard_error_fmt(hdl, errno, errbuf); 4521 } 4522 } 4523 4524 for (elem = nvlist_next_nvpair(errors, NULL); 4525 elem != NULL; 4526 elem = nvlist_next_nvpair(errors, elem)) { 4527 (void) snprintf(errbuf, sizeof (errbuf), 4528 dgettext(TEXT_DOMAIN, 4529 "cannot release hold from snapshot '%s'"), 4530 nvpair_name(elem)); 4531 switch (fnvpair_value_int32(elem)) { 4532 case ESRCH: 4533 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4534 break; 4535 case EINVAL: 4536 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4537 break; 4538 default: 4539 (void) zfs_standard_error_fmt(hdl, 4540 fnvpair_value_int32(elem), errbuf); 4541 } 4542 } 4543 4544 fnvlist_free(errors); 4545 return (ret); 4546} 4547 4548int 4549zfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl) 4550{ 4551 zfs_cmd_t zc = { 0 }; 4552 libzfs_handle_t *hdl = zhp->zfs_hdl; 4553 int nvsz = 2048; 4554 void *nvbuf; 4555 int err = 0; 4556 char errbuf[1024]; 4557 4558 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4559 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4560 4561tryagain: 4562 4563 nvbuf = malloc(nvsz); 4564 if (nvbuf == NULL) { 4565 err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno))); 4566 goto out; 4567 } 4568 4569 zc.zc_nvlist_dst_size = nvsz; 4570 zc.zc_nvlist_dst = (uintptr_t)nvbuf; 4571 4572 (void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN); 4573 4574 if (ioctl(hdl->libzfs_fd, ZFS_IOC_GET_FSACL, &zc) != 0) { 4575 (void) snprintf(errbuf, sizeof (errbuf), 4576 dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"), 4577 zc.zc_name); 4578 switch (errno) { 4579 case ENOMEM: 4580 free(nvbuf); 4581 nvsz = zc.zc_nvlist_dst_size; 4582 goto tryagain; 4583 4584 case ENOTSUP: 4585 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4586 "pool must be upgraded")); 4587 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4588 break; 4589 case EINVAL: 4590 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4591 break; 4592 case ENOENT: 4593 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4594 break; 4595 default: 4596 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4597 break; 4598 } 4599 } else { 4600 /* success */ 4601 int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0); 4602 if (rc) { 4603 (void) snprintf(errbuf, sizeof (errbuf), dgettext( 4604 TEXT_DOMAIN, "cannot get permissions on '%s'"), 4605 zc.zc_name); 4606 err = zfs_standard_error_fmt(hdl, rc, errbuf); 4607 } 4608 } 4609 4610 free(nvbuf); 4611out: 4612 return (err); 4613} 4614 4615int 4616zfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl) 4617{ 4618 zfs_cmd_t zc = { 0 }; 4619 libzfs_handle_t *hdl = zhp->zfs_hdl; 4620 char *nvbuf; 4621 char errbuf[1024]; 4622 size_t nvsz; 4623 int err; 4624 4625 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4626 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4627 4628 err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE); 4629 assert(err == 0); 4630 4631 nvbuf = malloc(nvsz); 4632 4633 err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0); 4634 assert(err == 0); 4635 4636 zc.zc_nvlist_src_size = nvsz; 4637 zc.zc_nvlist_src = (uintptr_t)nvbuf; 4638 zc.zc_perm_action = un; 4639 4640 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4641 4642 if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) { 4643 (void) snprintf(errbuf, sizeof (errbuf), 4644 dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"), 4645 zc.zc_name); 4646 switch (errno) { 4647 case ENOTSUP: 4648 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4649 "pool must be upgraded")); 4650 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4651 break; 4652 case EINVAL: 4653 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4654 break; 4655 case ENOENT: 4656 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4657 break; 4658 default: 4659 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4660 break; 4661 } 4662 } 4663 4664 free(nvbuf); 4665 4666 return (err); 4667} 4668 4669int 4670zfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl) 4671{ 4672 int err; 4673 char errbuf[1024]; 4674 4675 err = lzc_get_holds(zhp->zfs_name, nvl); 4676 4677 if (err != 0) { 4678 libzfs_handle_t *hdl = zhp->zfs_hdl; 4679 4680 (void) snprintf(errbuf, sizeof (errbuf), 4681 dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"), 4682 zhp->zfs_name); 4683 switch (err) { 4684 case ENOTSUP: 4685 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4686 "pool must be upgraded")); 4687 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4688 break; 4689 case EINVAL: 4690 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4691 break; 4692 case ENOENT: 4693 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4694 break; 4695 default: 4696 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4697 break; 4698 } 4699 } 4700 4701 return (err); 4702} 4703 4704/* 4705 * Convert the zvol's volume size to an appropriate reservation. 4706 * Note: If this routine is updated, it is necessary to update the ZFS test 4707 * suite's shell version in reservation.kshlib. 4708 */ 4709uint64_t 4710zvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props) 4711{ 4712 uint64_t numdb; 4713 uint64_t nblocks, volblocksize; 4714 int ncopies; 4715 char *strval; 4716 4717 if (nvlist_lookup_string(props, 4718 zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0) 4719 ncopies = atoi(strval); 4720 else 4721 ncopies = 1; 4722 if (nvlist_lookup_uint64(props, 4723 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 4724 &volblocksize) != 0) 4725 volblocksize = ZVOL_DEFAULT_BLOCKSIZE; 4726 nblocks = volsize/volblocksize; 4727 /* start with metadnode L0-L6 */ 4728 numdb = 7; 4729 /* calculate number of indirects */ 4730 while (nblocks > 1) { 4731 nblocks += DNODES_PER_LEVEL - 1; 4732 nblocks /= DNODES_PER_LEVEL; 4733 numdb += nblocks; 4734 } 4735 numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1); 4736 volsize *= ncopies; 4737 /* 4738 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't 4739 * compressed, but in practice they compress down to about 4740 * 1100 bytes 4741 */ 4742 numdb *= 1ULL << DN_MAX_INDBLKSHIFT; 4743 volsize += numdb; 4744 return (volsize); 4745} 4746 4747/* 4748 * Attach/detach the given filesystem to/from the given jail. 4749 */ 4750int 4751zfs_jail(zfs_handle_t *zhp, int jailid, int attach) 4752{ 4753 libzfs_handle_t *hdl = zhp->zfs_hdl; 4754 zfs_cmd_t zc = { 0 }; 4755 char errbuf[1024]; 4756 unsigned long cmd; 4757 int ret; 4758 4759 if (attach) { 4760 (void) snprintf(errbuf, sizeof (errbuf), 4761 dgettext(TEXT_DOMAIN, "cannot jail '%s'"), zhp->zfs_name); 4762 } else { 4763 (void) snprintf(errbuf, sizeof (errbuf), 4764 dgettext(TEXT_DOMAIN, "cannot unjail '%s'"), zhp->zfs_name); 4765 } 4766 4767 switch (zhp->zfs_type) { 4768 case ZFS_TYPE_VOLUME: 4769 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4770 "volumes can not be jailed")); 4771 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 4772 case ZFS_TYPE_SNAPSHOT: 4773 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4774 "snapshots can not be jailed")); 4775 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 4776 } 4777 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4778 4779 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4780 zc.zc_objset_type = DMU_OST_ZFS; 4781 zc.zc_jailid = jailid; 4782 4783 cmd = attach ? ZFS_IOC_JAIL : ZFS_IOC_UNJAIL; 4784 if ((ret = ioctl(hdl->libzfs_fd, cmd, &zc)) != 0) 4785 zfs_standard_error(hdl, errno, errbuf); 4786 4787 return (ret); 4788} 4789