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