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