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