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