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