1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2013, Joyent, Inc. All rights reserved. 25 * Copyright (c) 2011, 2014 by Delphix. All rights reserved. 26 * Copyright (c) 2012 DEY Storage Systems, Inc. All rights reserved. 27 * Copyright (c) 2013 Martin Matuska. All rights reserved. 28 * Copyright (c) 2013 Steven Hartland. All rights reserved. 29 * Copyright 2013 Nexenta Systems, Inc. All rights reserved. 30 */ 31 32 #include <ctype.h> 33 #include <errno.h> 34 #include <libintl.h> 35 #include <math.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <strings.h> 39 #include <unistd.h> 40 #include <stddef.h> 41 #include <zone.h> 42 #include <fcntl.h> 43 #include <sys/mntent.h> 44 #include <sys/mount.h> 45 #include <priv.h> 46 #include <pwd.h> 47 #include <grp.h> 48 #include <stddef.h> 49 #include <ucred.h> 50 #include <idmap.h> 51 #include <aclutils.h> 52 #include <directory.h> 53 54 #include <sys/dnode.h> 55 #include <sys/spa.h> 56 #include <sys/zap.h> 57 #include <libzfs.h> 58 59 #include "zfs_namecheck.h" 60 #include "zfs_prop.h" 61 #include "libzfs_impl.h" 62 #include "zfs_deleg.h" 63 64 static int userquota_propname_decode(const char *propname, boolean_t zoned, 65 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp); 66 67 /* 68 * Given a single type (not a mask of types), return the type in a human 69 * readable form. 70 */ 71 const char * 72 zfs_type_to_name(zfs_type_t type) 73 { 74 switch (type) { 75 case ZFS_TYPE_FILESYSTEM: 76 return (dgettext(TEXT_DOMAIN, "filesystem")); 77 case ZFS_TYPE_SNAPSHOT: 78 return (dgettext(TEXT_DOMAIN, "snapshot")); 79 case ZFS_TYPE_VOLUME: 80 return (dgettext(TEXT_DOMAIN, "volume")); 81 } 82 83 return (NULL); 84 } 85 86 /* 87 * Given a path and mask of ZFS types, return a string describing this dataset. 88 * This is used when we fail to open a dataset and we cannot get an exact type. 89 * We guess what the type would have been based on the path and the mask of 90 * acceptable types. 91 */ 92 static const char * 93 path_to_str(const char *path, int types) 94 { 95 /* 96 * When given a single type, always report the exact type. 97 */ 98 if (types == ZFS_TYPE_SNAPSHOT) 99 return (dgettext(TEXT_DOMAIN, "snapshot")); 100 if (types == ZFS_TYPE_FILESYSTEM) 101 return (dgettext(TEXT_DOMAIN, "filesystem")); 102 if (types == ZFS_TYPE_VOLUME) 103 return (dgettext(TEXT_DOMAIN, "volume")); 104 105 /* 106 * The user is requesting more than one type of dataset. If this is the 107 * case, consult the path itself. If we're looking for a snapshot, and 108 * a '@' is found, then report it as "snapshot". Otherwise, remove the 109 * snapshot attribute and try again. 110 */ 111 if (types & ZFS_TYPE_SNAPSHOT) { 112 if (strchr(path, '@') != NULL) 113 return (dgettext(TEXT_DOMAIN, "snapshot")); 114 return (path_to_str(path, types & ~ZFS_TYPE_SNAPSHOT)); 115 } 116 117 /* 118 * The user has requested either filesystems or volumes. 119 * We have no way of knowing a priori what type this would be, so always 120 * report it as "filesystem" or "volume", our two primitive types. 121 */ 122 if (types & ZFS_TYPE_FILESYSTEM) 123 return (dgettext(TEXT_DOMAIN, "filesystem")); 124 125 assert(types & ZFS_TYPE_VOLUME); 126 return (dgettext(TEXT_DOMAIN, "volume")); 127 } 128 129 /* 130 * Validate a ZFS path. This is used even before trying to open the dataset, to 131 * provide a more meaningful error message. We call zfs_error_aux() to 132 * explain exactly why the name was not valid. 133 */ 134 int 135 zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, 136 boolean_t modifying) 137 { 138 namecheck_err_t why; 139 char what; 140 141 (void) zfs_prop_get_table(); 142 if (dataset_namecheck(path, &why, &what) != 0) { 143 if (hdl != NULL) { 144 switch (why) { 145 case NAME_ERR_TOOLONG: 146 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 147 "name is too long")); 148 break; 149 150 case NAME_ERR_LEADING_SLASH: 151 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 152 "leading slash in name")); 153 break; 154 155 case NAME_ERR_EMPTY_COMPONENT: 156 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 157 "empty component in name")); 158 break; 159 160 case NAME_ERR_TRAILING_SLASH: 161 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 162 "trailing slash in name")); 163 break; 164 165 case NAME_ERR_INVALCHAR: 166 zfs_error_aux(hdl, 167 dgettext(TEXT_DOMAIN, "invalid character " 168 "'%c' in name"), what); 169 break; 170 171 case NAME_ERR_MULTIPLE_AT: 172 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 173 "multiple '@' delimiters in name")); 174 break; 175 176 case NAME_ERR_NOLETTER: 177 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 178 "pool doesn't begin with a letter")); 179 break; 180 181 case NAME_ERR_RESERVED: 182 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 183 "name is reserved")); 184 break; 185 186 case NAME_ERR_DISKLIKE: 187 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 188 "reserved disk name")); 189 break; 190 } 191 } 192 193 return (0); 194 } 195 196 if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) { 197 if (hdl != NULL) 198 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 199 "snapshot delimiter '@' in filesystem name")); 200 return (0); 201 } 202 203 if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) { 204 if (hdl != NULL) 205 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 206 "missing '@' delimiter in snapshot name")); 207 return (0); 208 } 209 210 if (modifying && strchr(path, '%') != NULL) { 211 if (hdl != NULL) 212 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 213 "invalid character %c in name"), '%'); 214 return (0); 215 } 216 217 return (-1); 218 } 219 220 int 221 zfs_name_valid(const char *name, zfs_type_t type) 222 { 223 if (type == ZFS_TYPE_POOL) 224 return (zpool_name_valid(NULL, B_FALSE, name)); 225 return (zfs_validate_name(NULL, name, type, B_FALSE)); 226 } 227 228 /* 229 * This function takes the raw DSL properties, and filters out the user-defined 230 * properties into a separate nvlist. 231 */ 232 static nvlist_t * 233 process_user_props(zfs_handle_t *zhp, nvlist_t *props) 234 { 235 libzfs_handle_t *hdl = zhp->zfs_hdl; 236 nvpair_t *elem; 237 nvlist_t *propval; 238 nvlist_t *nvl; 239 240 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) { 241 (void) no_memory(hdl); 242 return (NULL); 243 } 244 245 elem = NULL; 246 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { 247 if (!zfs_prop_user(nvpair_name(elem))) 248 continue; 249 250 verify(nvpair_value_nvlist(elem, &propval) == 0); 251 if (nvlist_add_nvlist(nvl, nvpair_name(elem), propval) != 0) { 252 nvlist_free(nvl); 253 (void) no_memory(hdl); 254 return (NULL); 255 } 256 } 257 258 return (nvl); 259 } 260 261 static zpool_handle_t * 262 zpool_add_handle(zfs_handle_t *zhp, const char *pool_name) 263 { 264 libzfs_handle_t *hdl = zhp->zfs_hdl; 265 zpool_handle_t *zph; 266 267 if ((zph = zpool_open_canfail(hdl, pool_name)) != NULL) { 268 if (hdl->libzfs_pool_handles != NULL) 269 zph->zpool_next = hdl->libzfs_pool_handles; 270 hdl->libzfs_pool_handles = zph; 271 } 272 return (zph); 273 } 274 275 static zpool_handle_t * 276 zpool_find_handle(zfs_handle_t *zhp, const char *pool_name, int len) 277 { 278 libzfs_handle_t *hdl = zhp->zfs_hdl; 279 zpool_handle_t *zph = hdl->libzfs_pool_handles; 280 281 while ((zph != NULL) && 282 (strncmp(pool_name, zpool_get_name(zph), len) != 0)) 283 zph = zph->zpool_next; 284 return (zph); 285 } 286 287 /* 288 * Returns a handle to the pool that contains the provided dataset. 289 * If a handle to that pool already exists then that handle is returned. 290 * Otherwise, a new handle is created and added to the list of handles. 291 */ 292 static zpool_handle_t * 293 zpool_handle(zfs_handle_t *zhp) 294 { 295 char *pool_name; 296 int len; 297 zpool_handle_t *zph; 298 299 len = strcspn(zhp->zfs_name, "/@#") + 1; 300 pool_name = zfs_alloc(zhp->zfs_hdl, len); 301 (void) strlcpy(pool_name, zhp->zfs_name, len); 302 303 zph = zpool_find_handle(zhp, pool_name, len); 304 if (zph == NULL) 305 zph = zpool_add_handle(zhp, pool_name); 306 307 free(pool_name); 308 return (zph); 309 } 310 311 void 312 zpool_free_handles(libzfs_handle_t *hdl) 313 { 314 zpool_handle_t *next, *zph = hdl->libzfs_pool_handles; 315 316 while (zph != NULL) { 317 next = zph->zpool_next; 318 zpool_close(zph); 319 zph = next; 320 } 321 hdl->libzfs_pool_handles = NULL; 322 } 323 324 /* 325 * Utility function to gather stats (objset and zpl) for the given object. 326 */ 327 static int 328 get_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc) 329 { 330 libzfs_handle_t *hdl = zhp->zfs_hdl; 331 332 (void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name)); 333 334 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, zc) != 0) { 335 if (errno == ENOMEM) { 336 if (zcmd_expand_dst_nvlist(hdl, zc) != 0) { 337 return (-1); 338 } 339 } else { 340 return (-1); 341 } 342 } 343 return (0); 344 } 345 346 /* 347 * Utility function to get the received properties of the given object. 348 */ 349 static int 350 get_recvd_props_ioctl(zfs_handle_t *zhp) 351 { 352 libzfs_handle_t *hdl = zhp->zfs_hdl; 353 nvlist_t *recvdprops; 354 zfs_cmd_t zc = { 0 }; 355 int err; 356 357 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) 358 return (-1); 359 360 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 361 362 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) { 363 if (errno == ENOMEM) { 364 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 365 return (-1); 366 } 367 } else { 368 zcmd_free_nvlists(&zc); 369 return (-1); 370 } 371 } 372 373 err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops); 374 zcmd_free_nvlists(&zc); 375 if (err != 0) 376 return (-1); 377 378 nvlist_free(zhp->zfs_recvd_props); 379 zhp->zfs_recvd_props = recvdprops; 380 381 return (0); 382 } 383 384 static int 385 put_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc) 386 { 387 nvlist_t *allprops, *userprops; 388 389 zhp->zfs_dmustats = zc->zc_objset_stats; /* structure assignment */ 390 391 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, zc, &allprops) != 0) { 392 return (-1); 393 } 394 395 /* 396 * XXX Why do we store the user props separately, in addition to 397 * storing them in zfs_props? 398 */ 399 if ((userprops = process_user_props(zhp, allprops)) == NULL) { 400 nvlist_free(allprops); 401 return (-1); 402 } 403 404 nvlist_free(zhp->zfs_props); 405 nvlist_free(zhp->zfs_user_props); 406 407 zhp->zfs_props = allprops; 408 zhp->zfs_user_props = userprops; 409 410 return (0); 411 } 412 413 static int 414 get_stats(zfs_handle_t *zhp) 415 { 416 int rc = 0; 417 zfs_cmd_t zc = { 0 }; 418 419 if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 420 return (-1); 421 if (get_stats_ioctl(zhp, &zc) != 0) 422 rc = -1; 423 else if (put_stats_zhdl(zhp, &zc) != 0) 424 rc = -1; 425 zcmd_free_nvlists(&zc); 426 return (rc); 427 } 428 429 /* 430 * Refresh the properties currently stored in the handle. 431 */ 432 void 433 zfs_refresh_properties(zfs_handle_t *zhp) 434 { 435 (void) get_stats(zhp); 436 } 437 438 /* 439 * Makes a handle from the given dataset name. Used by zfs_open() and 440 * zfs_iter_* to create child handles on the fly. 441 */ 442 static int 443 make_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc) 444 { 445 if (put_stats_zhdl(zhp, zc) != 0) 446 return (-1); 447 448 /* 449 * We've managed to open the dataset and gather statistics. Determine 450 * the high-level type. 451 */ 452 if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 453 zhp->zfs_head_type = ZFS_TYPE_VOLUME; 454 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 455 zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM; 456 else 457 abort(); 458 459 if (zhp->zfs_dmustats.dds_is_snapshot) 460 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 461 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 462 zhp->zfs_type = ZFS_TYPE_VOLUME; 463 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 464 zhp->zfs_type = ZFS_TYPE_FILESYSTEM; 465 else 466 abort(); /* we should never see any other types */ 467 468 if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) 469 return (-1); 470 471 return (0); 472 } 473 474 zfs_handle_t * 475 make_dataset_handle(libzfs_handle_t *hdl, const char *path) 476 { 477 zfs_cmd_t zc = { 0 }; 478 479 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 480 481 if (zhp == NULL) 482 return (NULL); 483 484 zhp->zfs_hdl = hdl; 485 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 486 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) { 487 free(zhp); 488 return (NULL); 489 } 490 if (get_stats_ioctl(zhp, &zc) == -1) { 491 zcmd_free_nvlists(&zc); 492 free(zhp); 493 return (NULL); 494 } 495 if (make_dataset_handle_common(zhp, &zc) == -1) { 496 free(zhp); 497 zhp = NULL; 498 } 499 zcmd_free_nvlists(&zc); 500 return (zhp); 501 } 502 503 zfs_handle_t * 504 make_dataset_handle_zc(libzfs_handle_t *hdl, zfs_cmd_t *zc) 505 { 506 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 507 508 if (zhp == NULL) 509 return (NULL); 510 511 zhp->zfs_hdl = hdl; 512 (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); 513 if (make_dataset_handle_common(zhp, zc) == -1) { 514 free(zhp); 515 return (NULL); 516 } 517 return (zhp); 518 } 519 520 zfs_handle_t * 521 zfs_handle_dup(zfs_handle_t *zhp_orig) 522 { 523 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 524 525 if (zhp == NULL) 526 return (NULL); 527 528 zhp->zfs_hdl = zhp_orig->zfs_hdl; 529 zhp->zpool_hdl = zhp_orig->zpool_hdl; 530 (void) strlcpy(zhp->zfs_name, zhp_orig->zfs_name, 531 sizeof (zhp->zfs_name)); 532 zhp->zfs_type = zhp_orig->zfs_type; 533 zhp->zfs_head_type = zhp_orig->zfs_head_type; 534 zhp->zfs_dmustats = zhp_orig->zfs_dmustats; 535 if (zhp_orig->zfs_props != NULL) { 536 if (nvlist_dup(zhp_orig->zfs_props, &zhp->zfs_props, 0) != 0) { 537 (void) no_memory(zhp->zfs_hdl); 538 zfs_close(zhp); 539 return (NULL); 540 } 541 } 542 if (zhp_orig->zfs_user_props != NULL) { 543 if (nvlist_dup(zhp_orig->zfs_user_props, 544 &zhp->zfs_user_props, 0) != 0) { 545 (void) no_memory(zhp->zfs_hdl); 546 zfs_close(zhp); 547 return (NULL); 548 } 549 } 550 if (zhp_orig->zfs_recvd_props != NULL) { 551 if (nvlist_dup(zhp_orig->zfs_recvd_props, 552 &zhp->zfs_recvd_props, 0)) { 553 (void) no_memory(zhp->zfs_hdl); 554 zfs_close(zhp); 555 return (NULL); 556 } 557 } 558 zhp->zfs_mntcheck = zhp_orig->zfs_mntcheck; 559 if (zhp_orig->zfs_mntopts != NULL) { 560 zhp->zfs_mntopts = zfs_strdup(zhp_orig->zfs_hdl, 561 zhp_orig->zfs_mntopts); 562 } 563 zhp->zfs_props_table = zhp_orig->zfs_props_table; 564 return (zhp); 565 } 566 567 boolean_t 568 zfs_bookmark_exists(const char *path) 569 { 570 nvlist_t *bmarks; 571 nvlist_t *props; 572 char fsname[ZFS_MAXNAMELEN]; 573 char *bmark_name; 574 char *pound; 575 int err; 576 boolean_t rv; 577 578 579 (void) strlcpy(fsname, path, sizeof (fsname)); 580 pound = strchr(fsname, '#'); 581 if (pound == NULL) 582 return (B_FALSE); 583 584 *pound = '\0'; 585 bmark_name = pound + 1; 586 props = fnvlist_alloc(); 587 err = lzc_get_bookmarks(fsname, props, &bmarks); 588 nvlist_free(props); 589 if (err != 0) { 590 nvlist_free(bmarks); 591 return (B_FALSE); 592 } 593 594 rv = nvlist_exists(bmarks, bmark_name); 595 nvlist_free(bmarks); 596 return (rv); 597 } 598 599 zfs_handle_t * 600 make_bookmark_handle(zfs_handle_t *parent, const char *path, 601 nvlist_t *bmark_props) 602 { 603 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 604 605 if (zhp == NULL) 606 return (NULL); 607 608 /* Fill in the name. */ 609 zhp->zfs_hdl = parent->zfs_hdl; 610 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 611 612 /* Set the property lists. */ 613 if (nvlist_dup(bmark_props, &zhp->zfs_props, 0) != 0) { 614 free(zhp); 615 return (NULL); 616 } 617 618 /* Set the types. */ 619 zhp->zfs_head_type = parent->zfs_head_type; 620 zhp->zfs_type = ZFS_TYPE_BOOKMARK; 621 622 if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) { 623 nvlist_free(zhp->zfs_props); 624 free(zhp); 625 return (NULL); 626 } 627 628 return (zhp); 629 } 630 631 /* 632 * Opens the given snapshot, filesystem, or volume. The 'types' 633 * argument is a mask of acceptable types. The function will print an 634 * appropriate error message and return NULL if it can't be opened. 635 */ 636 zfs_handle_t * 637 zfs_open(libzfs_handle_t *hdl, const char *path, int types) 638 { 639 zfs_handle_t *zhp; 640 char errbuf[1024]; 641 642 (void) snprintf(errbuf, sizeof (errbuf), 643 dgettext(TEXT_DOMAIN, "cannot open '%s'"), path); 644 645 /* 646 * Validate the name before we even try to open it. 647 */ 648 if (!zfs_validate_name(hdl, path, ZFS_TYPE_DATASET, B_FALSE)) { 649 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 650 "invalid dataset name")); 651 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 652 return (NULL); 653 } 654 655 /* 656 * Try to get stats for the dataset, which will tell us if it exists. 657 */ 658 errno = 0; 659 if ((zhp = make_dataset_handle(hdl, path)) == NULL) { 660 (void) zfs_standard_error(hdl, errno, errbuf); 661 return (NULL); 662 } 663 664 if (!(types & zhp->zfs_type)) { 665 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 666 zfs_close(zhp); 667 return (NULL); 668 } 669 670 return (zhp); 671 } 672 673 /* 674 * Release a ZFS handle. Nothing to do but free the associated memory. 675 */ 676 void 677 zfs_close(zfs_handle_t *zhp) 678 { 679 if (zhp->zfs_mntopts) 680 free(zhp->zfs_mntopts); 681 nvlist_free(zhp->zfs_props); 682 nvlist_free(zhp->zfs_user_props); 683 nvlist_free(zhp->zfs_recvd_props); 684 free(zhp); 685 } 686 687 typedef struct mnttab_node { 688 struct mnttab mtn_mt; 689 avl_node_t mtn_node; 690 } mnttab_node_t; 691 692 static int 693 libzfs_mnttab_cache_compare(const void *arg1, const void *arg2) 694 { 695 const mnttab_node_t *mtn1 = arg1; 696 const mnttab_node_t *mtn2 = arg2; 697 int rv; 698 699 rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special); 700 701 if (rv == 0) 702 return (0); 703 return (rv > 0 ? 1 : -1); 704 } 705 706 void 707 libzfs_mnttab_init(libzfs_handle_t *hdl) 708 { 709 assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0); 710 avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare, 711 sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node)); 712 } 713 714 void 715 libzfs_mnttab_update(libzfs_handle_t *hdl) 716 { 717 struct mnttab entry; 718 719 rewind(hdl->libzfs_mnttab); 720 while (getmntent(hdl->libzfs_mnttab, &entry) == 0) { 721 mnttab_node_t *mtn; 722 723 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 724 continue; 725 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); 726 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, entry.mnt_special); 727 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, entry.mnt_mountp); 728 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, entry.mnt_fstype); 729 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, entry.mnt_mntopts); 730 avl_add(&hdl->libzfs_mnttab_cache, mtn); 731 } 732 } 733 734 void 735 libzfs_mnttab_fini(libzfs_handle_t *hdl) 736 { 737 void *cookie = NULL; 738 mnttab_node_t *mtn; 739 740 while (mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie)) { 741 free(mtn->mtn_mt.mnt_special); 742 free(mtn->mtn_mt.mnt_mountp); 743 free(mtn->mtn_mt.mnt_fstype); 744 free(mtn->mtn_mt.mnt_mntopts); 745 free(mtn); 746 } 747 avl_destroy(&hdl->libzfs_mnttab_cache); 748 } 749 750 void 751 libzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable) 752 { 753 hdl->libzfs_mnttab_enable = enable; 754 } 755 756 int 757 libzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname, 758 struct mnttab *entry) 759 { 760 mnttab_node_t find; 761 mnttab_node_t *mtn; 762 763 if (!hdl->libzfs_mnttab_enable) { 764 struct mnttab srch = { 0 }; 765 766 if (avl_numnodes(&hdl->libzfs_mnttab_cache)) 767 libzfs_mnttab_fini(hdl); 768 rewind(hdl->libzfs_mnttab); 769 srch.mnt_special = (char *)fsname; 770 srch.mnt_fstype = MNTTYPE_ZFS; 771 if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0) 772 return (0); 773 else 774 return (ENOENT); 775 } 776 777 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) 778 libzfs_mnttab_update(hdl); 779 780 find.mtn_mt.mnt_special = (char *)fsname; 781 mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL); 782 if (mtn) { 783 *entry = mtn->mtn_mt; 784 return (0); 785 } 786 return (ENOENT); 787 } 788 789 void 790 libzfs_mnttab_add(libzfs_handle_t *hdl, const char *special, 791 const char *mountp, const char *mntopts) 792 { 793 mnttab_node_t *mtn; 794 795 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) 796 return; 797 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); 798 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special); 799 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp); 800 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS); 801 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts); 802 avl_add(&hdl->libzfs_mnttab_cache, mtn); 803 } 804 805 void 806 libzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname) 807 { 808 mnttab_node_t find; 809 mnttab_node_t *ret; 810 811 find.mtn_mt.mnt_special = (char *)fsname; 812 if (ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL)) { 813 avl_remove(&hdl->libzfs_mnttab_cache, ret); 814 free(ret->mtn_mt.mnt_special); 815 free(ret->mtn_mt.mnt_mountp); 816 free(ret->mtn_mt.mnt_fstype); 817 free(ret->mtn_mt.mnt_mntopts); 818 free(ret); 819 } 820 } 821 822 int 823 zfs_spa_version(zfs_handle_t *zhp, int *spa_version) 824 { 825 zpool_handle_t *zpool_handle = zhp->zpool_hdl; 826 827 if (zpool_handle == NULL) 828 return (-1); 829 830 *spa_version = zpool_get_prop_int(zpool_handle, 831 ZPOOL_PROP_VERSION, NULL); 832 return (0); 833 } 834 835 /* 836 * The choice of reservation property depends on the SPA version. 837 */ 838 static int 839 zfs_which_resv_prop(zfs_handle_t *zhp, zfs_prop_t *resv_prop) 840 { 841 int spa_version; 842 843 if (zfs_spa_version(zhp, &spa_version) < 0) 844 return (-1); 845 846 if (spa_version >= SPA_VERSION_REFRESERVATION) 847 *resv_prop = ZFS_PROP_REFRESERVATION; 848 else 849 *resv_prop = ZFS_PROP_RESERVATION; 850 851 return (0); 852 } 853 854 /* 855 * Given an nvlist of properties to set, validates that they are correct, and 856 * parses any numeric properties (index, boolean, etc) if they are specified as 857 * strings. 858 */ 859 nvlist_t * 860 zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, 861 uint64_t zoned, zfs_handle_t *zhp, const char *errbuf) 862 { 863 nvpair_t *elem; 864 uint64_t intval; 865 char *strval; 866 zfs_prop_t prop; 867 nvlist_t *ret; 868 int chosen_normal = -1; 869 int chosen_utf = -1; 870 871 if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) { 872 (void) no_memory(hdl); 873 return (NULL); 874 } 875 876 /* 877 * Make sure this property is valid and applies to this type. 878 */ 879 880 elem = NULL; 881 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 882 const char *propname = nvpair_name(elem); 883 884 prop = zfs_name_to_prop(propname); 885 if (prop == ZPROP_INVAL && zfs_prop_user(propname)) { 886 /* 887 * This is a user property: make sure it's a 888 * string, and that it's less than ZAP_MAXNAMELEN. 889 */ 890 if (nvpair_type(elem) != DATA_TYPE_STRING) { 891 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 892 "'%s' must be a string"), propname); 893 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 894 goto error; 895 } 896 897 if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) { 898 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 899 "property name '%s' is too long"), 900 propname); 901 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 902 goto error; 903 } 904 905 (void) nvpair_value_string(elem, &strval); 906 if (nvlist_add_string(ret, propname, strval) != 0) { 907 (void) no_memory(hdl); 908 goto error; 909 } 910 continue; 911 } 912 913 /* 914 * Currently, only user properties can be modified on 915 * snapshots. 916 */ 917 if (type == ZFS_TYPE_SNAPSHOT) { 918 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 919 "this property can not be modified for snapshots")); 920 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 921 goto error; 922 } 923 924 if (prop == ZPROP_INVAL && zfs_prop_userquota(propname)) { 925 zfs_userquota_prop_t uqtype; 926 char newpropname[128]; 927 char domain[128]; 928 uint64_t rid; 929 uint64_t valary[3]; 930 931 if (userquota_propname_decode(propname, zoned, 932 &uqtype, domain, sizeof (domain), &rid) != 0) { 933 zfs_error_aux(hdl, 934 dgettext(TEXT_DOMAIN, 935 "'%s' has an invalid user/group name"), 936 propname); 937 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 938 goto error; 939 } 940 941 if (uqtype != ZFS_PROP_USERQUOTA && 942 uqtype != ZFS_PROP_GROUPQUOTA) { 943 zfs_error_aux(hdl, 944 dgettext(TEXT_DOMAIN, "'%s' is readonly"), 945 propname); 946 (void) zfs_error(hdl, EZFS_PROPREADONLY, 947 errbuf); 948 goto error; 949 } 950 951 if (nvpair_type(elem) == DATA_TYPE_STRING) { 952 (void) nvpair_value_string(elem, &strval); 953 if (strcmp(strval, "none") == 0) { 954 intval = 0; 955 } else if (zfs_nicestrtonum(hdl, 956 strval, &intval) != 0) { 957 (void) zfs_error(hdl, 958 EZFS_BADPROP, errbuf); 959 goto error; 960 } 961 } else if (nvpair_type(elem) == 962 DATA_TYPE_UINT64) { 963 (void) nvpair_value_uint64(elem, &intval); 964 if (intval == 0) { 965 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 966 "use 'none' to disable " 967 "userquota/groupquota")); 968 goto error; 969 } 970 } else { 971 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 972 "'%s' must be a number"), propname); 973 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 974 goto error; 975 } 976 977 /* 978 * Encode the prop name as 979 * userquota@<hex-rid>-domain, to make it easy 980 * for the kernel to decode. 981 */ 982 (void) snprintf(newpropname, sizeof (newpropname), 983 "%s%llx-%s", zfs_userquota_prop_prefixes[uqtype], 984 (longlong_t)rid, domain); 985 valary[0] = uqtype; 986 valary[1] = rid; 987 valary[2] = intval; 988 if (nvlist_add_uint64_array(ret, newpropname, 989 valary, 3) != 0) { 990 (void) no_memory(hdl); 991 goto error; 992 } 993 continue; 994 } else if (prop == ZPROP_INVAL && zfs_prop_written(propname)) { 995 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 996 "'%s' is readonly"), 997 propname); 998 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 999 goto error; 1000 } 1001 1002 if (prop == ZPROP_INVAL) { 1003 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1004 "invalid property '%s'"), propname); 1005 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1006 goto error; 1007 } 1008 1009 if (!zfs_prop_valid_for_type(prop, type)) { 1010 zfs_error_aux(hdl, 1011 dgettext(TEXT_DOMAIN, "'%s' does not " 1012 "apply to datasets of this type"), propname); 1013 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 1014 goto error; 1015 } 1016 1017 if (zfs_prop_readonly(prop) && 1018 (!zfs_prop_setonce(prop) || zhp != NULL)) { 1019 zfs_error_aux(hdl, 1020 dgettext(TEXT_DOMAIN, "'%s' is readonly"), 1021 propname); 1022 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 1023 goto error; 1024 } 1025 1026 if (zprop_parse_value(hdl, elem, prop, type, ret, 1027 &strval, &intval, errbuf) != 0) 1028 goto error; 1029 1030 /* 1031 * Perform some additional checks for specific properties. 1032 */ 1033 switch (prop) { 1034 case ZFS_PROP_VERSION: 1035 { 1036 int version; 1037 1038 if (zhp == NULL) 1039 break; 1040 version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1041 if (intval < version) { 1042 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1043 "Can not downgrade; already at version %u"), 1044 version); 1045 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1046 goto error; 1047 } 1048 break; 1049 } 1050 1051 case ZFS_PROP_VOLBLOCKSIZE: 1052 case ZFS_PROP_RECORDSIZE: 1053 { 1054 int maxbs = SPA_MAXBLOCKSIZE; 1055 if (zhp != NULL) { 1056 maxbs = zpool_get_prop_int(zhp->zpool_hdl, 1057 ZPOOL_PROP_MAXBLOCKSIZE, NULL); 1058 } 1059 /* 1060 * Volumes are limited to a volblocksize of 128KB, 1061 * because they typically service workloads with 1062 * small random writes, which incur a large performance 1063 * penalty with large blocks. 1064 */ 1065 if (prop == ZFS_PROP_VOLBLOCKSIZE) 1066 maxbs = SPA_OLD_MAXBLOCKSIZE; 1067 /* 1068 * The value must be a power of two between 1069 * SPA_MINBLOCKSIZE and maxbs. 1070 */ 1071 if (intval < SPA_MINBLOCKSIZE || 1072 intval > maxbs || !ISP2(intval)) { 1073 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1074 "'%s' must be power of 2 from 512B " 1075 "to %uKB"), propname, maxbs >> 10); 1076 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1077 goto error; 1078 } 1079 break; 1080 } 1081 case ZFS_PROP_MLSLABEL: 1082 { 1083 /* 1084 * Verify the mlslabel string and convert to 1085 * internal hex label string. 1086 */ 1087 1088 m_label_t *new_sl; 1089 char *hex = NULL; /* internal label string */ 1090 1091 /* Default value is already OK. */ 1092 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 1093 break; 1094 1095 /* Verify the label can be converted to binary form */ 1096 if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) || 1097 (str_to_label(strval, &new_sl, MAC_LABEL, 1098 L_NO_CORRECTION, NULL) == -1)) { 1099 goto badlabel; 1100 } 1101 1102 /* Now translate to hex internal label string */ 1103 if (label_to_str(new_sl, &hex, M_INTERNAL, 1104 DEF_NAMES) != 0) { 1105 if (hex) 1106 free(hex); 1107 goto badlabel; 1108 } 1109 m_label_free(new_sl); 1110 1111 /* If string is already in internal form, we're done. */ 1112 if (strcmp(strval, hex) == 0) { 1113 free(hex); 1114 break; 1115 } 1116 1117 /* Replace the label string with the internal form. */ 1118 (void) nvlist_remove(ret, zfs_prop_to_name(prop), 1119 DATA_TYPE_STRING); 1120 verify(nvlist_add_string(ret, zfs_prop_to_name(prop), 1121 hex) == 0); 1122 free(hex); 1123 1124 break; 1125 1126 badlabel: 1127 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1128 "invalid mlslabel '%s'"), strval); 1129 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1130 m_label_free(new_sl); /* OK if null */ 1131 goto error; 1132 1133 } 1134 1135 case ZFS_PROP_MOUNTPOINT: 1136 { 1137 namecheck_err_t why; 1138 1139 if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 || 1140 strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0) 1141 break; 1142 1143 if (mountpoint_namecheck(strval, &why)) { 1144 switch (why) { 1145 case NAME_ERR_LEADING_SLASH: 1146 zfs_error_aux(hdl, 1147 dgettext(TEXT_DOMAIN, 1148 "'%s' must be an absolute path, " 1149 "'none', or 'legacy'"), propname); 1150 break; 1151 case NAME_ERR_TOOLONG: 1152 zfs_error_aux(hdl, 1153 dgettext(TEXT_DOMAIN, 1154 "component of '%s' is too long"), 1155 propname); 1156 break; 1157 } 1158 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1159 goto error; 1160 } 1161 } 1162 1163 /*FALLTHRU*/ 1164 1165 case ZFS_PROP_SHARESMB: 1166 case ZFS_PROP_SHARENFS: 1167 /* 1168 * For the mountpoint and sharenfs or sharesmb 1169 * properties, check if it can be set in a 1170 * global/non-global zone based on 1171 * the zoned property value: 1172 * 1173 * global zone non-global zone 1174 * -------------------------------------------------- 1175 * zoned=on mountpoint (no) mountpoint (yes) 1176 * sharenfs (no) sharenfs (no) 1177 * sharesmb (no) sharesmb (no) 1178 * 1179 * zoned=off mountpoint (yes) N/A 1180 * sharenfs (yes) 1181 * sharesmb (yes) 1182 */ 1183 if (zoned) { 1184 if (getzoneid() == GLOBAL_ZONEID) { 1185 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1186 "'%s' cannot be set on " 1187 "dataset in a non-global zone"), 1188 propname); 1189 (void) zfs_error(hdl, EZFS_ZONED, 1190 errbuf); 1191 goto error; 1192 } else if (prop == ZFS_PROP_SHARENFS || 1193 prop == ZFS_PROP_SHARESMB) { 1194 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1195 "'%s' cannot be set in " 1196 "a non-global zone"), propname); 1197 (void) zfs_error(hdl, EZFS_ZONED, 1198 errbuf); 1199 goto error; 1200 } 1201 } else if (getzoneid() != GLOBAL_ZONEID) { 1202 /* 1203 * If zoned property is 'off', this must be in 1204 * a global zone. If not, something is wrong. 1205 */ 1206 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1207 "'%s' cannot be set while dataset " 1208 "'zoned' property is set"), propname); 1209 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 1210 goto error; 1211 } 1212 1213 /* 1214 * At this point, it is legitimate to set the 1215 * property. Now we want to make sure that the 1216 * property value is valid if it is sharenfs. 1217 */ 1218 if ((prop == ZFS_PROP_SHARENFS || 1219 prop == ZFS_PROP_SHARESMB) && 1220 strcmp(strval, "on") != 0 && 1221 strcmp(strval, "off") != 0) { 1222 zfs_share_proto_t proto; 1223 1224 if (prop == ZFS_PROP_SHARESMB) 1225 proto = PROTO_SMB; 1226 else 1227 proto = PROTO_NFS; 1228 1229 /* 1230 * Must be an valid sharing protocol 1231 * option string so init the libshare 1232 * in order to enable the parser and 1233 * then parse the options. We use the 1234 * control API since we don't care about 1235 * the current configuration and don't 1236 * want the overhead of loading it 1237 * until we actually do something. 1238 */ 1239 1240 if (zfs_init_libshare(hdl, 1241 SA_INIT_CONTROL_API) != SA_OK) { 1242 /* 1243 * An error occurred so we can't do 1244 * anything 1245 */ 1246 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1247 "'%s' cannot be set: problem " 1248 "in share initialization"), 1249 propname); 1250 (void) zfs_error(hdl, EZFS_BADPROP, 1251 errbuf); 1252 goto error; 1253 } 1254 1255 if (zfs_parse_options(strval, proto) != SA_OK) { 1256 /* 1257 * There was an error in parsing so 1258 * deal with it by issuing an error 1259 * message and leaving after 1260 * uninitializing the the libshare 1261 * interface. 1262 */ 1263 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1264 "'%s' cannot be set to invalid " 1265 "options"), propname); 1266 (void) zfs_error(hdl, EZFS_BADPROP, 1267 errbuf); 1268 zfs_uninit_libshare(hdl); 1269 goto error; 1270 } 1271 zfs_uninit_libshare(hdl); 1272 } 1273 1274 break; 1275 case ZFS_PROP_UTF8ONLY: 1276 chosen_utf = (int)intval; 1277 break; 1278 case ZFS_PROP_NORMALIZE: 1279 chosen_normal = (int)intval; 1280 break; 1281 } 1282 1283 /* 1284 * For changes to existing volumes, we have some additional 1285 * checks to enforce. 1286 */ 1287 if (type == ZFS_TYPE_VOLUME && zhp != NULL) { 1288 uint64_t volsize = zfs_prop_get_int(zhp, 1289 ZFS_PROP_VOLSIZE); 1290 uint64_t blocksize = zfs_prop_get_int(zhp, 1291 ZFS_PROP_VOLBLOCKSIZE); 1292 char buf[64]; 1293 1294 switch (prop) { 1295 case ZFS_PROP_RESERVATION: 1296 case ZFS_PROP_REFRESERVATION: 1297 if (intval > volsize) { 1298 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1299 "'%s' is greater than current " 1300 "volume size"), propname); 1301 (void) zfs_error(hdl, EZFS_BADPROP, 1302 errbuf); 1303 goto error; 1304 } 1305 break; 1306 1307 case ZFS_PROP_VOLSIZE: 1308 if (intval % blocksize != 0) { 1309 zfs_nicenum(blocksize, buf, 1310 sizeof (buf)); 1311 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1312 "'%s' must be a multiple of " 1313 "volume block size (%s)"), 1314 propname, buf); 1315 (void) zfs_error(hdl, EZFS_BADPROP, 1316 errbuf); 1317 goto error; 1318 } 1319 1320 if (intval == 0) { 1321 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1322 "'%s' cannot be zero"), 1323 propname); 1324 (void) zfs_error(hdl, EZFS_BADPROP, 1325 errbuf); 1326 goto error; 1327 } 1328 break; 1329 } 1330 } 1331 } 1332 1333 /* 1334 * If normalization was chosen, but no UTF8 choice was made, 1335 * enforce rejection of non-UTF8 names. 1336 * 1337 * If normalization was chosen, but rejecting non-UTF8 names 1338 * was explicitly not chosen, it is an error. 1339 */ 1340 if (chosen_normal > 0 && chosen_utf < 0) { 1341 if (nvlist_add_uint64(ret, 1342 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), 1) != 0) { 1343 (void) no_memory(hdl); 1344 goto error; 1345 } 1346 } else if (chosen_normal > 0 && chosen_utf == 0) { 1347 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1348 "'%s' must be set 'on' if normalization chosen"), 1349 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 1350 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1351 goto error; 1352 } 1353 return (ret); 1354 1355 error: 1356 nvlist_free(ret); 1357 return (NULL); 1358 } 1359 1360 int 1361 zfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl) 1362 { 1363 uint64_t old_volsize; 1364 uint64_t new_volsize; 1365 uint64_t old_reservation; 1366 uint64_t new_reservation; 1367 zfs_prop_t resv_prop; 1368 nvlist_t *props; 1369 1370 /* 1371 * If this is an existing volume, and someone is setting the volsize, 1372 * make sure that it matches the reservation, or add it if necessary. 1373 */ 1374 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 1375 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 1376 return (-1); 1377 old_reservation = zfs_prop_get_int(zhp, resv_prop); 1378 1379 props = fnvlist_alloc(); 1380 fnvlist_add_uint64(props, zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 1381 zfs_prop_get_int(zhp, ZFS_PROP_VOLBLOCKSIZE)); 1382 1383 if ((zvol_volsize_to_reservation(old_volsize, props) != 1384 old_reservation) || nvlist_exists(nvl, 1385 zfs_prop_to_name(resv_prop))) { 1386 fnvlist_free(props); 1387 return (0); 1388 } 1389 if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1390 &new_volsize) != 0) { 1391 fnvlist_free(props); 1392 return (-1); 1393 } 1394 new_reservation = zvol_volsize_to_reservation(new_volsize, props); 1395 fnvlist_free(props); 1396 1397 if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop), 1398 new_reservation) != 0) { 1399 (void) no_memory(zhp->zfs_hdl); 1400 return (-1); 1401 } 1402 return (1); 1403 } 1404 1405 void 1406 zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err, 1407 char *errbuf) 1408 { 1409 switch (err) { 1410 1411 case ENOSPC: 1412 /* 1413 * For quotas and reservations, ENOSPC indicates 1414 * something different; setting a quota or reservation 1415 * doesn't use any disk space. 1416 */ 1417 switch (prop) { 1418 case ZFS_PROP_QUOTA: 1419 case ZFS_PROP_REFQUOTA: 1420 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1421 "size is less than current used or " 1422 "reserved space")); 1423 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1424 break; 1425 1426 case ZFS_PROP_RESERVATION: 1427 case ZFS_PROP_REFRESERVATION: 1428 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1429 "size is greater than available space")); 1430 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1431 break; 1432 1433 default: 1434 (void) zfs_standard_error(hdl, err, errbuf); 1435 break; 1436 } 1437 break; 1438 1439 case EBUSY: 1440 (void) zfs_standard_error(hdl, EBUSY, errbuf); 1441 break; 1442 1443 case EROFS: 1444 (void) zfs_error(hdl, EZFS_DSREADONLY, errbuf); 1445 break; 1446 1447 case E2BIG: 1448 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1449 "property value too long")); 1450 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1451 break; 1452 1453 case ENOTSUP: 1454 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1455 "pool and or dataset must be upgraded to set this " 1456 "property or value")); 1457 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 1458 break; 1459 1460 case ERANGE: 1461 if (prop == ZFS_PROP_COMPRESSION || 1462 prop == ZFS_PROP_RECORDSIZE) { 1463 (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1464 "property setting is not allowed on " 1465 "bootable datasets")); 1466 (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); 1467 } else { 1468 (void) zfs_standard_error(hdl, err, errbuf); 1469 } 1470 break; 1471 1472 case EINVAL: 1473 if (prop == ZPROP_INVAL) { 1474 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1475 } else { 1476 (void) zfs_standard_error(hdl, err, errbuf); 1477 } 1478 break; 1479 1480 case EOVERFLOW: 1481 /* 1482 * This platform can't address a volume this big. 1483 */ 1484 #ifdef _ILP32 1485 if (prop == ZFS_PROP_VOLSIZE) { 1486 (void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf); 1487 break; 1488 } 1489 #endif 1490 /* FALLTHROUGH */ 1491 default: 1492 (void) zfs_standard_error(hdl, err, errbuf); 1493 } 1494 } 1495 1496 /* 1497 * Given a property name and value, set the property for the given dataset. 1498 */ 1499 int 1500 zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) 1501 { 1502 int ret = -1; 1503 char errbuf[1024]; 1504 libzfs_handle_t *hdl = zhp->zfs_hdl; 1505 nvlist_t *nvl = NULL; 1506 1507 (void) snprintf(errbuf, sizeof (errbuf), 1508 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 1509 zhp->zfs_name); 1510 1511 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 || 1512 nvlist_add_string(nvl, propname, propval) != 0) { 1513 (void) no_memory(hdl); 1514 goto error; 1515 } 1516 1517 ret = zfs_prop_set_list(zhp, nvl); 1518 1519 error: 1520 nvlist_free(nvl); 1521 return (ret); 1522 } 1523 1524 1525 1526 /* 1527 * Given an nvlist of property names and values, set the properties for the 1528 * given dataset. 1529 */ 1530 int 1531 zfs_prop_set_list(zfs_handle_t *zhp, nvlist_t *props) 1532 { 1533 zfs_cmd_t zc = { 0 }; 1534 int ret = -1; 1535 prop_changelist_t **cls = NULL; 1536 int cl_idx; 1537 char errbuf[1024]; 1538 libzfs_handle_t *hdl = zhp->zfs_hdl; 1539 nvlist_t *nvl; 1540 int nvl_len; 1541 int added_resv; 1542 1543 (void) snprintf(errbuf, sizeof (errbuf), 1544 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 1545 zhp->zfs_name); 1546 1547 if ((nvl = zfs_valid_proplist(hdl, zhp->zfs_type, props, 1548 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, errbuf)) == NULL) 1549 goto error; 1550 1551 /* 1552 * We have to check for any extra properties which need to be added 1553 * before computing the length of the nvlist. 1554 */ 1555 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1556 elem != NULL; 1557 elem = nvlist_next_nvpair(nvl, elem)) { 1558 if (zfs_name_to_prop(nvpair_name(elem)) == ZFS_PROP_VOLSIZE && 1559 (added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1) { 1560 goto error; 1561 } 1562 } 1563 /* 1564 * Check how many properties we're setting and allocate an array to 1565 * store changelist pointers for postfix(). 1566 */ 1567 nvl_len = 0; 1568 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1569 elem != NULL; 1570 elem = nvlist_next_nvpair(nvl, elem)) 1571 nvl_len++; 1572 if ((cls = calloc(nvl_len, sizeof (prop_changelist_t *))) == NULL) 1573 goto error; 1574 1575 cl_idx = 0; 1576 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1577 elem != NULL; 1578 elem = nvlist_next_nvpair(nvl, elem)) { 1579 1580 zfs_prop_t prop = zfs_name_to_prop(nvpair_name(elem)); 1581 1582 assert(cl_idx < nvl_len); 1583 /* 1584 * We don't want to unmount & remount the dataset when changing 1585 * its canmount property to 'on' or 'noauto'. We only use 1586 * the changelist logic to unmount when setting canmount=off. 1587 */ 1588 if (!(prop == ZFS_PROP_CANMOUNT && 1589 fnvpair_value_uint64(elem) != ZFS_CANMOUNT_OFF)) { 1590 cls[cl_idx] = changelist_gather(zhp, prop, 0, 0); 1591 if (cls[cl_idx] == NULL) 1592 goto error; 1593 } 1594 1595 if (prop == ZFS_PROP_MOUNTPOINT && 1596 changelist_haszonedchild(cls[cl_idx])) { 1597 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1598 "child dataset with inherited mountpoint is used " 1599 "in a non-global zone")); 1600 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1601 goto error; 1602 } 1603 1604 if (cls[cl_idx] != NULL && 1605 (ret = changelist_prefix(cls[cl_idx])) != 0) 1606 goto error; 1607 1608 cl_idx++; 1609 } 1610 assert(cl_idx == nvl_len); 1611 1612 /* 1613 * Execute the corresponding ioctl() to set this list of properties. 1614 */ 1615 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1616 1617 if ((ret = zcmd_write_src_nvlist(hdl, &zc, nvl)) != 0 || 1618 (ret = zcmd_alloc_dst_nvlist(hdl, &zc, 0)) != 0) 1619 goto error; 1620 1621 ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1622 1623 if (ret != 0) { 1624 /* Get the list of unset properties back and report them. */ 1625 nvlist_t *errorprops = NULL; 1626 if (zcmd_read_dst_nvlist(hdl, &zc, &errorprops) != 0) 1627 goto error; 1628 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1629 elem != NULL; 1630 elem = nvlist_next_nvpair(nvl, elem)) { 1631 zfs_prop_t prop = zfs_name_to_prop(nvpair_name(elem)); 1632 zfs_setprop_error(hdl, prop, errno, errbuf); 1633 } 1634 nvlist_free(errorprops); 1635 1636 if (added_resv && errno == ENOSPC) { 1637 /* clean up the volsize property we tried to set */ 1638 uint64_t old_volsize = zfs_prop_get_int(zhp, 1639 ZFS_PROP_VOLSIZE); 1640 nvlist_free(nvl); 1641 nvl = NULL; 1642 zcmd_free_nvlists(&zc); 1643 1644 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) 1645 goto error; 1646 if (nvlist_add_uint64(nvl, 1647 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1648 old_volsize) != 0) 1649 goto error; 1650 if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) 1651 goto error; 1652 (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1653 } 1654 } else { 1655 for (cl_idx = 0; cl_idx < nvl_len; cl_idx++) { 1656 if (cls[cl_idx] != NULL) { 1657 int clp_err = changelist_postfix(cls[cl_idx]); 1658 if (clp_err != 0) 1659 ret = clp_err; 1660 } 1661 } 1662 1663 /* 1664 * Refresh the statistics so the new property value 1665 * is reflected. 1666 */ 1667 if (ret == 0) 1668 (void) get_stats(zhp); 1669 } 1670 1671 error: 1672 nvlist_free(nvl); 1673 zcmd_free_nvlists(&zc); 1674 if (cls != NULL) { 1675 for (cl_idx = 0; cl_idx < nvl_len; cl_idx++) { 1676 if (cls[cl_idx] != NULL) 1677 changelist_free(cls[cl_idx]); 1678 } 1679 free(cls); 1680 } 1681 return (ret); 1682 } 1683 1684 /* 1685 * Given a property, inherit the value from the parent dataset, or if received 1686 * is TRUE, revert to the received value, if any. 1687 */ 1688 int 1689 zfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received) 1690 { 1691 zfs_cmd_t zc = { 0 }; 1692 int ret; 1693 prop_changelist_t *cl; 1694 libzfs_handle_t *hdl = zhp->zfs_hdl; 1695 char errbuf[1024]; 1696 zfs_prop_t prop; 1697 1698 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 1699 "cannot inherit %s for '%s'"), propname, zhp->zfs_name); 1700 1701 zc.zc_cookie = received; 1702 if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) { 1703 /* 1704 * For user properties, the amount of work we have to do is very 1705 * small, so just do it here. 1706 */ 1707 if (!zfs_prop_user(propname)) { 1708 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1709 "invalid property")); 1710 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 1711 } 1712 1713 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1714 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1715 1716 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc) != 0) 1717 return (zfs_standard_error(hdl, errno, errbuf)); 1718 1719 return (0); 1720 } 1721 1722 /* 1723 * Verify that this property is inheritable. 1724 */ 1725 if (zfs_prop_readonly(prop)) 1726 return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf)); 1727 1728 if (!zfs_prop_inheritable(prop) && !received) 1729 return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf)); 1730 1731 /* 1732 * Check to see if the value applies to this type 1733 */ 1734 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 1735 return (zfs_error(hdl, EZFS_PROPTYPE, errbuf)); 1736 1737 /* 1738 * Normalize the name, to get rid of shorthand abbreviations. 1739 */ 1740 propname = zfs_prop_to_name(prop); 1741 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1742 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1743 1744 if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID && 1745 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 1746 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1747 "dataset is used in a non-global zone")); 1748 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 1749 } 1750 1751 /* 1752 * Determine datasets which will be affected by this change, if any. 1753 */ 1754 if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) 1755 return (-1); 1756 1757 if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { 1758 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1759 "child dataset with inherited mountpoint is used " 1760 "in a non-global zone")); 1761 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1762 goto error; 1763 } 1764 1765 if ((ret = changelist_prefix(cl)) != 0) 1766 goto error; 1767 1768 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc)) != 0) { 1769 return (zfs_standard_error(hdl, errno, errbuf)); 1770 } else { 1771 1772 if ((ret = changelist_postfix(cl)) != 0) 1773 goto error; 1774 1775 /* 1776 * Refresh the statistics so the new property is reflected. 1777 */ 1778 (void) get_stats(zhp); 1779 } 1780 1781 error: 1782 changelist_free(cl); 1783 return (ret); 1784 } 1785 1786 /* 1787 * True DSL properties are stored in an nvlist. The following two functions 1788 * extract them appropriately. 1789 */ 1790 static uint64_t 1791 getprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 1792 { 1793 nvlist_t *nv; 1794 uint64_t value; 1795 1796 *source = NULL; 1797 if (nvlist_lookup_nvlist(zhp->zfs_props, 1798 zfs_prop_to_name(prop), &nv) == 0) { 1799 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); 1800 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 1801 } else { 1802 verify(!zhp->zfs_props_table || 1803 zhp->zfs_props_table[prop] == B_TRUE); 1804 value = zfs_prop_default_numeric(prop); 1805 *source = ""; 1806 } 1807 1808 return (value); 1809 } 1810 1811 static char * 1812 getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 1813 { 1814 nvlist_t *nv; 1815 char *value; 1816 1817 *source = NULL; 1818 if (nvlist_lookup_nvlist(zhp->zfs_props, 1819 zfs_prop_to_name(prop), &nv) == 0) { 1820 verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0); 1821 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 1822 } else { 1823 verify(!zhp->zfs_props_table || 1824 zhp->zfs_props_table[prop] == B_TRUE); 1825 if ((value = (char *)zfs_prop_default_string(prop)) == NULL) 1826 value = ""; 1827 *source = ""; 1828 } 1829 1830 return (value); 1831 } 1832 1833 static boolean_t 1834 zfs_is_recvd_props_mode(zfs_handle_t *zhp) 1835 { 1836 return (zhp->zfs_props == zhp->zfs_recvd_props); 1837 } 1838 1839 static void 1840 zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1841 { 1842 *cookie = (uint64_t)(uintptr_t)zhp->zfs_props; 1843 zhp->zfs_props = zhp->zfs_recvd_props; 1844 } 1845 1846 static void 1847 zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1848 { 1849 zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie; 1850 *cookie = 0; 1851 } 1852 1853 /* 1854 * Internal function for getting a numeric property. Both zfs_prop_get() and 1855 * zfs_prop_get_int() are built using this interface. 1856 * 1857 * Certain properties can be overridden using 'mount -o'. In this case, scan 1858 * the contents of the /etc/mnttab entry, searching for the appropriate options. 1859 * If they differ from the on-disk values, report the current values and mark 1860 * the source "temporary". 1861 */ 1862 static int 1863 get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, 1864 char **source, uint64_t *val) 1865 { 1866 zfs_cmd_t zc = { 0 }; 1867 nvlist_t *zplprops = NULL; 1868 struct mnttab mnt; 1869 char *mntopt_on = NULL; 1870 char *mntopt_off = NULL; 1871 boolean_t received = zfs_is_recvd_props_mode(zhp); 1872 1873 *source = NULL; 1874 1875 switch (prop) { 1876 case ZFS_PROP_ATIME: 1877 mntopt_on = MNTOPT_ATIME; 1878 mntopt_off = MNTOPT_NOATIME; 1879 break; 1880 1881 case ZFS_PROP_DEVICES: 1882 mntopt_on = MNTOPT_DEVICES; 1883 mntopt_off = MNTOPT_NODEVICES; 1884 break; 1885 1886 case ZFS_PROP_EXEC: 1887 mntopt_on = MNTOPT_EXEC; 1888 mntopt_off = MNTOPT_NOEXEC; 1889 break; 1890 1891 case ZFS_PROP_READONLY: 1892 mntopt_on = MNTOPT_RO; 1893 mntopt_off = MNTOPT_RW; 1894 break; 1895 1896 case ZFS_PROP_SETUID: 1897 mntopt_on = MNTOPT_SETUID; 1898 mntopt_off = MNTOPT_NOSETUID; 1899 break; 1900 1901 case ZFS_PROP_XATTR: 1902 mntopt_on = MNTOPT_XATTR; 1903 mntopt_off = MNTOPT_NOXATTR; 1904 break; 1905 1906 case ZFS_PROP_NBMAND: 1907 mntopt_on = MNTOPT_NBMAND; 1908 mntopt_off = MNTOPT_NONBMAND; 1909 break; 1910 } 1911 1912 /* 1913 * Because looking up the mount options is potentially expensive 1914 * (iterating over all of /etc/mnttab), we defer its calculation until 1915 * we're looking up a property which requires its presence. 1916 */ 1917 if (!zhp->zfs_mntcheck && 1918 (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) { 1919 libzfs_handle_t *hdl = zhp->zfs_hdl; 1920 struct mnttab entry; 1921 1922 if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) { 1923 zhp->zfs_mntopts = zfs_strdup(hdl, 1924 entry.mnt_mntopts); 1925 if (zhp->zfs_mntopts == NULL) 1926 return (-1); 1927 } 1928 1929 zhp->zfs_mntcheck = B_TRUE; 1930 } 1931 1932 if (zhp->zfs_mntopts == NULL) 1933 mnt.mnt_mntopts = ""; 1934 else 1935 mnt.mnt_mntopts = zhp->zfs_mntopts; 1936 1937 switch (prop) { 1938 case ZFS_PROP_ATIME: 1939 case ZFS_PROP_DEVICES: 1940 case ZFS_PROP_EXEC: 1941 case ZFS_PROP_READONLY: 1942 case ZFS_PROP_SETUID: 1943 case ZFS_PROP_XATTR: 1944 case ZFS_PROP_NBMAND: 1945 *val = getprop_uint64(zhp, prop, source); 1946 1947 if (received) 1948 break; 1949 1950 if (hasmntopt(&mnt, mntopt_on) && !*val) { 1951 *val = B_TRUE; 1952 if (src) 1953 *src = ZPROP_SRC_TEMPORARY; 1954 } else if (hasmntopt(&mnt, mntopt_off) && *val) { 1955 *val = B_FALSE; 1956 if (src) 1957 *src = ZPROP_SRC_TEMPORARY; 1958 } 1959 break; 1960 1961 case ZFS_PROP_CANMOUNT: 1962 case ZFS_PROP_VOLSIZE: 1963 case ZFS_PROP_QUOTA: 1964 case ZFS_PROP_REFQUOTA: 1965 case ZFS_PROP_RESERVATION: 1966 case ZFS_PROP_REFRESERVATION: 1967 case ZFS_PROP_FILESYSTEM_LIMIT: 1968 case ZFS_PROP_SNAPSHOT_LIMIT: 1969 case ZFS_PROP_FILESYSTEM_COUNT: 1970 case ZFS_PROP_SNAPSHOT_COUNT: 1971 *val = getprop_uint64(zhp, prop, source); 1972 1973 if (*source == NULL) { 1974 /* not default, must be local */ 1975 *source = zhp->zfs_name; 1976 } 1977 break; 1978 1979 case ZFS_PROP_MOUNTED: 1980 *val = (zhp->zfs_mntopts != NULL); 1981 break; 1982 1983 case ZFS_PROP_NUMCLONES: 1984 *val = zhp->zfs_dmustats.dds_num_clones; 1985 break; 1986 1987 case ZFS_PROP_VERSION: 1988 case ZFS_PROP_NORMALIZE: 1989 case ZFS_PROP_UTF8ONLY: 1990 case ZFS_PROP_CASE: 1991 if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) || 1992 zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 1993 return (-1); 1994 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1995 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) { 1996 zcmd_free_nvlists(&zc); 1997 return (-1); 1998 } 1999 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 || 2000 nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop), 2001 val) != 0) { 2002 zcmd_free_nvlists(&zc); 2003 return (-1); 2004 } 2005 if (zplprops) 2006 nvlist_free(zplprops); 2007 zcmd_free_nvlists(&zc); 2008 break; 2009 2010 case ZFS_PROP_INCONSISTENT: 2011 *val = zhp->zfs_dmustats.dds_inconsistent; 2012 break; 2013 2014 default: 2015 switch (zfs_prop_get_type(prop)) { 2016 case PROP_TYPE_NUMBER: 2017 case PROP_TYPE_INDEX: 2018 *val = getprop_uint64(zhp, prop, source); 2019 /* 2020 * If we tried to use a default value for a 2021 * readonly property, it means that it was not 2022 * present. 2023 */ 2024 if (zfs_prop_readonly(prop) && 2025 *source != NULL && (*source)[0] == '\0') { 2026 *source = NULL; 2027 } 2028 break; 2029 2030 case PROP_TYPE_STRING: 2031 default: 2032 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 2033 "cannot get non-numeric property")); 2034 return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP, 2035 dgettext(TEXT_DOMAIN, "internal error"))); 2036 } 2037 } 2038 2039 return (0); 2040 } 2041 2042 /* 2043 * Calculate the source type, given the raw source string. 2044 */ 2045 static void 2046 get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source, 2047 char *statbuf, size_t statlen) 2048 { 2049 if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY) 2050 return; 2051 2052 if (source == NULL) { 2053 *srctype = ZPROP_SRC_NONE; 2054 } else if (source[0] == '\0') { 2055 *srctype = ZPROP_SRC_DEFAULT; 2056 } else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) { 2057 *srctype = ZPROP_SRC_RECEIVED; 2058 } else { 2059 if (strcmp(source, zhp->zfs_name) == 0) { 2060 *srctype = ZPROP_SRC_LOCAL; 2061 } else { 2062 (void) strlcpy(statbuf, source, statlen); 2063 *srctype = ZPROP_SRC_INHERITED; 2064 } 2065 } 2066 2067 } 2068 2069 int 2070 zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf, 2071 size_t proplen, boolean_t literal) 2072 { 2073 zfs_prop_t prop; 2074 int err = 0; 2075 2076 if (zhp->zfs_recvd_props == NULL) 2077 if (get_recvd_props_ioctl(zhp) != 0) 2078 return (-1); 2079 2080 prop = zfs_name_to_prop(propname); 2081 2082 if (prop != ZPROP_INVAL) { 2083 uint64_t cookie; 2084 if (!nvlist_exists(zhp->zfs_recvd_props, propname)) 2085 return (-1); 2086 zfs_set_recvd_props_mode(zhp, &cookie); 2087 err = zfs_prop_get(zhp, prop, propbuf, proplen, 2088 NULL, NULL, 0, literal); 2089 zfs_unset_recvd_props_mode(zhp, &cookie); 2090 } else { 2091 nvlist_t *propval; 2092 char *recvdval; 2093 if (nvlist_lookup_nvlist(zhp->zfs_recvd_props, 2094 propname, &propval) != 0) 2095 return (-1); 2096 verify(nvlist_lookup_string(propval, ZPROP_VALUE, 2097 &recvdval) == 0); 2098 (void) strlcpy(propbuf, recvdval, proplen); 2099 } 2100 2101 return (err == 0 ? 0 : -1); 2102 } 2103 2104 static int 2105 get_clones_string(zfs_handle_t *zhp, char *propbuf, size_t proplen) 2106 { 2107 nvlist_t *value; 2108 nvpair_t *pair; 2109 2110 value = zfs_get_clones_nvl(zhp); 2111 if (value == NULL) 2112 return (-1); 2113 2114 propbuf[0] = '\0'; 2115 for (pair = nvlist_next_nvpair(value, NULL); pair != NULL; 2116 pair = nvlist_next_nvpair(value, pair)) { 2117 if (propbuf[0] != '\0') 2118 (void) strlcat(propbuf, ",", proplen); 2119 (void) strlcat(propbuf, nvpair_name(pair), proplen); 2120 } 2121 2122 return (0); 2123 } 2124 2125 struct get_clones_arg { 2126 uint64_t numclones; 2127 nvlist_t *value; 2128 const char *origin; 2129 char buf[ZFS_MAXNAMELEN]; 2130 }; 2131 2132 int 2133 get_clones_cb(zfs_handle_t *zhp, void *arg) 2134 { 2135 struct get_clones_arg *gca = arg; 2136 2137 if (gca->numclones == 0) { 2138 zfs_close(zhp); 2139 return (0); 2140 } 2141 2142 if (zfs_prop_get(zhp, ZFS_PROP_ORIGIN, gca->buf, sizeof (gca->buf), 2143 NULL, NULL, 0, B_TRUE) != 0) 2144 goto out; 2145 if (strcmp(gca->buf, gca->origin) == 0) { 2146 fnvlist_add_boolean(gca->value, zfs_get_name(zhp)); 2147 gca->numclones--; 2148 } 2149 2150 out: 2151 (void) zfs_iter_children(zhp, get_clones_cb, gca); 2152 zfs_close(zhp); 2153 return (0); 2154 } 2155 2156 nvlist_t * 2157 zfs_get_clones_nvl(zfs_handle_t *zhp) 2158 { 2159 nvlist_t *nv, *value; 2160 2161 if (nvlist_lookup_nvlist(zhp->zfs_props, 2162 zfs_prop_to_name(ZFS_PROP_CLONES), &nv) != 0) { 2163 struct get_clones_arg gca; 2164 2165 /* 2166 * if this is a snapshot, then the kernel wasn't able 2167 * to get the clones. Do it by slowly iterating. 2168 */ 2169 if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) 2170 return (NULL); 2171 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, 0) != 0) 2172 return (NULL); 2173 if (nvlist_alloc(&value, NV_UNIQUE_NAME, 0) != 0) { 2174 nvlist_free(nv); 2175 return (NULL); 2176 } 2177 2178 gca.numclones = zfs_prop_get_int(zhp, ZFS_PROP_NUMCLONES); 2179 gca.value = value; 2180 gca.origin = zhp->zfs_name; 2181 2182 if (gca.numclones != 0) { 2183 zfs_handle_t *root; 2184 char pool[ZFS_MAXNAMELEN]; 2185 char *cp = pool; 2186 2187 /* get the pool name */ 2188 (void) strlcpy(pool, zhp->zfs_name, sizeof (pool)); 2189 (void) strsep(&cp, "/@"); 2190 root = zfs_open(zhp->zfs_hdl, pool, 2191 ZFS_TYPE_FILESYSTEM); 2192 2193 (void) get_clones_cb(root, &gca); 2194 } 2195 2196 if (gca.numclones != 0 || 2197 nvlist_add_nvlist(nv, ZPROP_VALUE, value) != 0 || 2198 nvlist_add_nvlist(zhp->zfs_props, 2199 zfs_prop_to_name(ZFS_PROP_CLONES), nv) != 0) { 2200 nvlist_free(nv); 2201 nvlist_free(value); 2202 return (NULL); 2203 } 2204 nvlist_free(nv); 2205 nvlist_free(value); 2206 verify(0 == nvlist_lookup_nvlist(zhp->zfs_props, 2207 zfs_prop_to_name(ZFS_PROP_CLONES), &nv)); 2208 } 2209 2210 verify(nvlist_lookup_nvlist(nv, ZPROP_VALUE, &value) == 0); 2211 2212 return (value); 2213 } 2214 2215 /* 2216 * Retrieve a property from the given object. If 'literal' is specified, then 2217 * numbers are left as exact values. Otherwise, numbers are converted to a 2218 * human-readable form. 2219 * 2220 * Returns 0 on success, or -1 on error. 2221 */ 2222 int 2223 zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, 2224 zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal) 2225 { 2226 char *source = NULL; 2227 uint64_t val; 2228 char *str; 2229 const char *strval; 2230 boolean_t received = zfs_is_recvd_props_mode(zhp); 2231 2232 /* 2233 * Check to see if this property applies to our object 2234 */ 2235 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 2236 return (-1); 2237 2238 if (received && zfs_prop_readonly(prop)) 2239 return (-1); 2240 2241 if (src) 2242 *src = ZPROP_SRC_NONE; 2243 2244 switch (prop) { 2245 case ZFS_PROP_CREATION: 2246 /* 2247 * 'creation' is a time_t stored in the statistics. We convert 2248 * this into a string unless 'literal' is specified. 2249 */ 2250 { 2251 val = getprop_uint64(zhp, prop, &source); 2252 time_t time = (time_t)val; 2253 struct tm t; 2254 2255 if (literal || 2256 localtime_r(&time, &t) == NULL || 2257 strftime(propbuf, proplen, "%a %b %e %k:%M %Y", 2258 &t) == 0) 2259 (void) snprintf(propbuf, proplen, "%llu", val); 2260 } 2261 break; 2262 2263 case ZFS_PROP_MOUNTPOINT: 2264 /* 2265 * Getting the precise mountpoint can be tricky. 2266 * 2267 * - for 'none' or 'legacy', return those values. 2268 * - for inherited mountpoints, we want to take everything 2269 * after our ancestor and append it to the inherited value. 2270 * 2271 * If the pool has an alternate root, we want to prepend that 2272 * root to any values we return. 2273 */ 2274 2275 str = getprop_string(zhp, prop, &source); 2276 2277 if (str[0] == '/') { 2278 char buf[MAXPATHLEN]; 2279 char *root = buf; 2280 const char *relpath; 2281 2282 /* 2283 * If we inherit the mountpoint, even from a dataset 2284 * with a received value, the source will be the path of 2285 * the dataset we inherit from. If source is 2286 * ZPROP_SOURCE_VAL_RECVD, the received value is not 2287 * inherited. 2288 */ 2289 if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) { 2290 relpath = ""; 2291 } else { 2292 relpath = zhp->zfs_name + strlen(source); 2293 if (relpath[0] == '/') 2294 relpath++; 2295 } 2296 2297 if ((zpool_get_prop(zhp->zpool_hdl, 2298 ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL, 2299 B_FALSE)) || (strcmp(root, "-") == 0)) 2300 root[0] = '\0'; 2301 /* 2302 * Special case an alternate root of '/'. This will 2303 * avoid having multiple leading slashes in the 2304 * mountpoint path. 2305 */ 2306 if (strcmp(root, "/") == 0) 2307 root++; 2308 2309 /* 2310 * If the mountpoint is '/' then skip over this 2311 * if we are obtaining either an alternate root or 2312 * an inherited mountpoint. 2313 */ 2314 if (str[1] == '\0' && (root[0] != '\0' || 2315 relpath[0] != '\0')) 2316 str++; 2317 2318 if (relpath[0] == '\0') 2319 (void) snprintf(propbuf, proplen, "%s%s", 2320 root, str); 2321 else 2322 (void) snprintf(propbuf, proplen, "%s%s%s%s", 2323 root, str, relpath[0] == '@' ? "" : "/", 2324 relpath); 2325 } else { 2326 /* 'legacy' or 'none' */ 2327 (void) strlcpy(propbuf, str, proplen); 2328 } 2329 2330 break; 2331 2332 case ZFS_PROP_ORIGIN: 2333 (void) strlcpy(propbuf, getprop_string(zhp, prop, &source), 2334 proplen); 2335 /* 2336 * If there is no parent at all, return failure to indicate that 2337 * it doesn't apply to this dataset. 2338 */ 2339 if (propbuf[0] == '\0') 2340 return (-1); 2341 break; 2342 2343 case ZFS_PROP_CLONES: 2344 if (get_clones_string(zhp, propbuf, proplen) != 0) 2345 return (-1); 2346 break; 2347 2348 case ZFS_PROP_QUOTA: 2349 case ZFS_PROP_REFQUOTA: 2350 case ZFS_PROP_RESERVATION: 2351 case ZFS_PROP_REFRESERVATION: 2352 2353 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2354 return (-1); 2355 2356 /* 2357 * If quota or reservation is 0, we translate this into 'none' 2358 * (unless literal is set), and indicate that it's the default 2359 * value. Otherwise, we print the number nicely and indicate 2360 * that its set locally. 2361 */ 2362 if (val == 0) { 2363 if (literal) 2364 (void) strlcpy(propbuf, "0", proplen); 2365 else 2366 (void) strlcpy(propbuf, "none", proplen); 2367 } else { 2368 if (literal) 2369 (void) snprintf(propbuf, proplen, "%llu", 2370 (u_longlong_t)val); 2371 else 2372 zfs_nicenum(val, propbuf, proplen); 2373 } 2374 break; 2375 2376 case ZFS_PROP_FILESYSTEM_LIMIT: 2377 case ZFS_PROP_SNAPSHOT_LIMIT: 2378 case ZFS_PROP_FILESYSTEM_COUNT: 2379 case ZFS_PROP_SNAPSHOT_COUNT: 2380 2381 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2382 return (-1); 2383 2384 /* 2385 * If limit is UINT64_MAX, we translate this into 'none' (unless 2386 * literal is set), and indicate that it's the default value. 2387 * Otherwise, we print the number nicely and indicate that it's 2388 * set locally. 2389 */ 2390 if (literal) { 2391 (void) snprintf(propbuf, proplen, "%llu", 2392 (u_longlong_t)val); 2393 } else if (val == UINT64_MAX) { 2394 (void) strlcpy(propbuf, "none", proplen); 2395 } else { 2396 zfs_nicenum(val, propbuf, proplen); 2397 } 2398 break; 2399 2400 case ZFS_PROP_REFRATIO: 2401 case ZFS_PROP_COMPRESSRATIO: 2402 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2403 return (-1); 2404 (void) snprintf(propbuf, proplen, "%llu.%02llux", 2405 (u_longlong_t)(val / 100), 2406 (u_longlong_t)(val % 100)); 2407 break; 2408 2409 case ZFS_PROP_TYPE: 2410 switch (zhp->zfs_type) { 2411 case ZFS_TYPE_FILESYSTEM: 2412 str = "filesystem"; 2413 break; 2414 case ZFS_TYPE_VOLUME: 2415 str = "volume"; 2416 break; 2417 case ZFS_TYPE_SNAPSHOT: 2418 str = "snapshot"; 2419 break; 2420 case ZFS_TYPE_BOOKMARK: 2421 str = "bookmark"; 2422 break; 2423 default: 2424 abort(); 2425 } 2426 (void) snprintf(propbuf, proplen, "%s", str); 2427 break; 2428 2429 case ZFS_PROP_MOUNTED: 2430 /* 2431 * The 'mounted' property is a pseudo-property that described 2432 * whether the filesystem is currently mounted. Even though 2433 * it's a boolean value, the typical values of "on" and "off" 2434 * don't make sense, so we translate to "yes" and "no". 2435 */ 2436 if (get_numeric_property(zhp, ZFS_PROP_MOUNTED, 2437 src, &source, &val) != 0) 2438 return (-1); 2439 if (val) 2440 (void) strlcpy(propbuf, "yes", proplen); 2441 else 2442 (void) strlcpy(propbuf, "no", proplen); 2443 break; 2444 2445 case ZFS_PROP_NAME: 2446 /* 2447 * The 'name' property is a pseudo-property derived from the 2448 * dataset name. It is presented as a real property to simplify 2449 * consumers. 2450 */ 2451 (void) strlcpy(propbuf, zhp->zfs_name, proplen); 2452 break; 2453 2454 case ZFS_PROP_MLSLABEL: 2455 { 2456 m_label_t *new_sl = NULL; 2457 char *ascii = NULL; /* human readable label */ 2458 2459 (void) strlcpy(propbuf, 2460 getprop_string(zhp, prop, &source), proplen); 2461 2462 if (literal || (strcasecmp(propbuf, 2463 ZFS_MLSLABEL_DEFAULT) == 0)) 2464 break; 2465 2466 /* 2467 * Try to translate the internal hex string to 2468 * human-readable output. If there are any 2469 * problems just use the hex string. 2470 */ 2471 2472 if (str_to_label(propbuf, &new_sl, MAC_LABEL, 2473 L_NO_CORRECTION, NULL) == -1) { 2474 m_label_free(new_sl); 2475 break; 2476 } 2477 2478 if (label_to_str(new_sl, &ascii, M_LABEL, 2479 DEF_NAMES) != 0) { 2480 if (ascii) 2481 free(ascii); 2482 m_label_free(new_sl); 2483 break; 2484 } 2485 m_label_free(new_sl); 2486 2487 (void) strlcpy(propbuf, ascii, proplen); 2488 free(ascii); 2489 } 2490 break; 2491 2492 case ZFS_PROP_GUID: 2493 /* 2494 * GUIDs are stored as numbers, but they are identifiers. 2495 * We don't want them to be pretty printed, because pretty 2496 * printing mangles the ID into a truncated and useless value. 2497 */ 2498 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2499 return (-1); 2500 (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t)val); 2501 break; 2502 2503 default: 2504 switch (zfs_prop_get_type(prop)) { 2505 case PROP_TYPE_NUMBER: 2506 if (get_numeric_property(zhp, prop, src, 2507 &source, &val) != 0) 2508 return (-1); 2509 if (literal) 2510 (void) snprintf(propbuf, proplen, "%llu", 2511 (u_longlong_t)val); 2512 else 2513 zfs_nicenum(val, propbuf, proplen); 2514 break; 2515 2516 case PROP_TYPE_STRING: 2517 (void) strlcpy(propbuf, 2518 getprop_string(zhp, prop, &source), proplen); 2519 break; 2520 2521 case PROP_TYPE_INDEX: 2522 if (get_numeric_property(zhp, prop, src, 2523 &source, &val) != 0) 2524 return (-1); 2525 if (zfs_prop_index_to_string(prop, val, &strval) != 0) 2526 return (-1); 2527 (void) strlcpy(propbuf, strval, proplen); 2528 break; 2529 2530 default: 2531 abort(); 2532 } 2533 } 2534 2535 get_source(zhp, src, source, statbuf, statlen); 2536 2537 return (0); 2538 } 2539 2540 /* 2541 * Utility function to get the given numeric property. Does no validation that 2542 * the given property is the appropriate type; should only be used with 2543 * hard-coded property types. 2544 */ 2545 uint64_t 2546 zfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop) 2547 { 2548 char *source; 2549 uint64_t val; 2550 2551 (void) get_numeric_property(zhp, prop, NULL, &source, &val); 2552 2553 return (val); 2554 } 2555 2556 int 2557 zfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val) 2558 { 2559 char buf[64]; 2560 2561 (void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val); 2562 return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf)); 2563 } 2564 2565 /* 2566 * Similar to zfs_prop_get(), but returns the value as an integer. 2567 */ 2568 int 2569 zfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value, 2570 zprop_source_t *src, char *statbuf, size_t statlen) 2571 { 2572 char *source; 2573 2574 /* 2575 * Check to see if this property applies to our object 2576 */ 2577 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) { 2578 return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE, 2579 dgettext(TEXT_DOMAIN, "cannot get property '%s'"), 2580 zfs_prop_to_name(prop))); 2581 } 2582 2583 if (src) 2584 *src = ZPROP_SRC_NONE; 2585 2586 if (get_numeric_property(zhp, prop, src, &source, value) != 0) 2587 return (-1); 2588 2589 get_source(zhp, src, source, statbuf, statlen); 2590 2591 return (0); 2592 } 2593 2594 static int 2595 idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser, 2596 char **domainp, idmap_rid_t *ridp) 2597 { 2598 idmap_get_handle_t *get_hdl = NULL; 2599 idmap_stat status; 2600 int err = EINVAL; 2601 2602 if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS) 2603 goto out; 2604 2605 if (isuser) { 2606 err = idmap_get_sidbyuid(get_hdl, id, 2607 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2608 } else { 2609 err = idmap_get_sidbygid(get_hdl, id, 2610 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2611 } 2612 if (err == IDMAP_SUCCESS && 2613 idmap_get_mappings(get_hdl) == IDMAP_SUCCESS && 2614 status == IDMAP_SUCCESS) 2615 err = 0; 2616 else 2617 err = EINVAL; 2618 out: 2619 if (get_hdl) 2620 idmap_get_destroy(get_hdl); 2621 return (err); 2622 } 2623 2624 /* 2625 * convert the propname into parameters needed by kernel 2626 * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829 2627 * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789 2628 */ 2629 static int 2630 userquota_propname_decode(const char *propname, boolean_t zoned, 2631 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp) 2632 { 2633 zfs_userquota_prop_t type; 2634 char *cp, *end; 2635 char *numericsid = NULL; 2636 boolean_t isuser; 2637 2638 domain[0] = '\0'; 2639 *ridp = 0; 2640 /* Figure out the property type ({user|group}{quota|space}) */ 2641 for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) { 2642 if (strncmp(propname, zfs_userquota_prop_prefixes[type], 2643 strlen(zfs_userquota_prop_prefixes[type])) == 0) 2644 break; 2645 } 2646 if (type == ZFS_NUM_USERQUOTA_PROPS) 2647 return (EINVAL); 2648 *typep = type; 2649 2650 isuser = (type == ZFS_PROP_USERQUOTA || 2651 type == ZFS_PROP_USERUSED); 2652 2653 cp = strchr(propname, '@') + 1; 2654 2655 if (strchr(cp, '@')) { 2656 /* 2657 * It's a SID name (eg "user@domain") that needs to be 2658 * turned into S-1-domainID-RID. 2659 */ 2660 int flag = 0; 2661 idmap_stat stat, map_stat; 2662 uid_t pid; 2663 idmap_rid_t rid; 2664 idmap_get_handle_t *gh = NULL; 2665 2666 stat = idmap_get_create(&gh); 2667 if (stat != IDMAP_SUCCESS) { 2668 idmap_get_destroy(gh); 2669 return (ENOMEM); 2670 } 2671 if (zoned && getzoneid() == GLOBAL_ZONEID) 2672 return (ENOENT); 2673 if (isuser) { 2674 stat = idmap_getuidbywinname(cp, NULL, flag, &pid); 2675 if (stat < 0) 2676 return (ENOENT); 2677 stat = idmap_get_sidbyuid(gh, pid, flag, &numericsid, 2678 &rid, &map_stat); 2679 } else { 2680 stat = idmap_getgidbywinname(cp, NULL, flag, &pid); 2681 if (stat < 0) 2682 return (ENOENT); 2683 stat = idmap_get_sidbygid(gh, pid, flag, &numericsid, 2684 &rid, &map_stat); 2685 } 2686 if (stat < 0) { 2687 idmap_get_destroy(gh); 2688 return (ENOENT); 2689 } 2690 stat = idmap_get_mappings(gh); 2691 idmap_get_destroy(gh); 2692 2693 if (stat < 0) { 2694 return (ENOENT); 2695 } 2696 if (numericsid == NULL) 2697 return (ENOENT); 2698 cp = numericsid; 2699 *ridp = rid; 2700 /* will be further decoded below */ 2701 } 2702 2703 if (strncmp(cp, "S-1-", 4) == 0) { 2704 /* It's a numeric SID (eg "S-1-234-567-89") */ 2705 (void) strlcpy(domain, cp, domainlen); 2706 errno = 0; 2707 if (*ridp == 0) { 2708 cp = strrchr(domain, '-'); 2709 *cp = '\0'; 2710 cp++; 2711 *ridp = strtoull(cp, &end, 10); 2712 } else { 2713 end = ""; 2714 } 2715 if (numericsid) { 2716 free(numericsid); 2717 numericsid = NULL; 2718 } 2719 if (errno != 0 || *end != '\0') 2720 return (EINVAL); 2721 } else if (!isdigit(*cp)) { 2722 /* 2723 * It's a user/group name (eg "user") that needs to be 2724 * turned into a uid/gid 2725 */ 2726 if (zoned && getzoneid() == GLOBAL_ZONEID) 2727 return (ENOENT); 2728 if (isuser) { 2729 struct passwd *pw; 2730 pw = getpwnam(cp); 2731 if (pw == NULL) 2732 return (ENOENT); 2733 *ridp = pw->pw_uid; 2734 } else { 2735 struct group *gr; 2736 gr = getgrnam(cp); 2737 if (gr == NULL) 2738 return (ENOENT); 2739 *ridp = gr->gr_gid; 2740 } 2741 } else { 2742 /* It's a user/group ID (eg "12345"). */ 2743 uid_t id = strtoul(cp, &end, 10); 2744 idmap_rid_t rid; 2745 char *mapdomain; 2746 2747 if (*end != '\0') 2748 return (EINVAL); 2749 if (id > MAXUID) { 2750 /* It's an ephemeral ID. */ 2751 if (idmap_id_to_numeric_domain_rid(id, isuser, 2752 &mapdomain, &rid) != 0) 2753 return (ENOENT); 2754 (void) strlcpy(domain, mapdomain, domainlen); 2755 *ridp = rid; 2756 } else { 2757 *ridp = id; 2758 } 2759 } 2760 2761 ASSERT3P(numericsid, ==, NULL); 2762 return (0); 2763 } 2764 2765 static int 2766 zfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname, 2767 uint64_t *propvalue, zfs_userquota_prop_t *typep) 2768 { 2769 int err; 2770 zfs_cmd_t zc = { 0 }; 2771 2772 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2773 2774 err = userquota_propname_decode(propname, 2775 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), 2776 typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid); 2777 zc.zc_objset_type = *typep; 2778 if (err) 2779 return (err); 2780 2781 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc); 2782 if (err) 2783 return (err); 2784 2785 *propvalue = zc.zc_cookie; 2786 return (0); 2787 } 2788 2789 int 2790 zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname, 2791 uint64_t *propvalue) 2792 { 2793 zfs_userquota_prop_t type; 2794 2795 return (zfs_prop_get_userquota_common(zhp, propname, propvalue, 2796 &type)); 2797 } 2798 2799 int 2800 zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname, 2801 char *propbuf, int proplen, boolean_t literal) 2802 { 2803 int err; 2804 uint64_t propvalue; 2805 zfs_userquota_prop_t type; 2806 2807 err = zfs_prop_get_userquota_common(zhp, propname, &propvalue, 2808 &type); 2809 2810 if (err) 2811 return (err); 2812 2813 if (literal) { 2814 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2815 } else if (propvalue == 0 && 2816 (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) { 2817 (void) strlcpy(propbuf, "none", proplen); 2818 } else { 2819 zfs_nicenum(propvalue, propbuf, proplen); 2820 } 2821 return (0); 2822 } 2823 2824 int 2825 zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname, 2826 uint64_t *propvalue) 2827 { 2828 int err; 2829 zfs_cmd_t zc = { 0 }; 2830 const char *snapname; 2831 2832 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2833 2834 snapname = strchr(propname, '@') + 1; 2835 if (strchr(snapname, '@')) { 2836 (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); 2837 } else { 2838 /* snapname is the short name, append it to zhp's fsname */ 2839 char *cp; 2840 2841 (void) strlcpy(zc.zc_value, zhp->zfs_name, 2842 sizeof (zc.zc_value)); 2843 cp = strchr(zc.zc_value, '@'); 2844 if (cp != NULL) 2845 *cp = '\0'; 2846 (void) strlcat(zc.zc_value, "@", sizeof (zc.zc_value)); 2847 (void) strlcat(zc.zc_value, snapname, sizeof (zc.zc_value)); 2848 } 2849 2850 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SPACE_WRITTEN, &zc); 2851 if (err) 2852 return (err); 2853 2854 *propvalue = zc.zc_cookie; 2855 return (0); 2856 } 2857 2858 int 2859 zfs_prop_get_written(zfs_handle_t *zhp, const char *propname, 2860 char *propbuf, int proplen, boolean_t literal) 2861 { 2862 int err; 2863 uint64_t propvalue; 2864 2865 err = zfs_prop_get_written_int(zhp, propname, &propvalue); 2866 2867 if (err) 2868 return (err); 2869 2870 if (literal) { 2871 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2872 } else { 2873 zfs_nicenum(propvalue, propbuf, proplen); 2874 } 2875 return (0); 2876 } 2877 2878 /* 2879 * Returns the name of the given zfs handle. 2880 */ 2881 const char * 2882 zfs_get_name(const zfs_handle_t *zhp) 2883 { 2884 return (zhp->zfs_name); 2885 } 2886 2887 /* 2888 * Returns the type of the given zfs handle. 2889 */ 2890 zfs_type_t 2891 zfs_get_type(const zfs_handle_t *zhp) 2892 { 2893 return (zhp->zfs_type); 2894 } 2895 2896 /* 2897 * Is one dataset name a child dataset of another? 2898 * 2899 * Needs to handle these cases: 2900 * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo" 2901 * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar" 2902 * Descendant? No. No. No. Yes. 2903 */ 2904 static boolean_t 2905 is_descendant(const char *ds1, const char *ds2) 2906 { 2907 size_t d1len = strlen(ds1); 2908 2909 /* ds2 can't be a descendant if it's smaller */ 2910 if (strlen(ds2) < d1len) 2911 return (B_FALSE); 2912 2913 /* otherwise, compare strings and verify that there's a '/' char */ 2914 return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0)); 2915 } 2916 2917 /* 2918 * Given a complete name, return just the portion that refers to the parent. 2919 * Will return -1 if there is no parent (path is just the name of the 2920 * pool). 2921 */ 2922 static int 2923 parent_name(const char *path, char *buf, size_t buflen) 2924 { 2925 char *slashp; 2926 2927 (void) strlcpy(buf, path, buflen); 2928 2929 if ((slashp = strrchr(buf, '/')) == NULL) 2930 return (-1); 2931 *slashp = '\0'; 2932 2933 return (0); 2934 } 2935 2936 /* 2937 * If accept_ancestor is false, then check to make sure that the given path has 2938 * a parent, and that it exists. If accept_ancestor is true, then find the 2939 * closest existing ancestor for the given path. In prefixlen return the 2940 * length of already existing prefix of the given path. We also fetch the 2941 * 'zoned' property, which is used to validate property settings when creating 2942 * new datasets. 2943 */ 2944 static int 2945 check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned, 2946 boolean_t accept_ancestor, int *prefixlen) 2947 { 2948 zfs_cmd_t zc = { 0 }; 2949 char parent[ZFS_MAXNAMELEN]; 2950 char *slash; 2951 zfs_handle_t *zhp; 2952 char errbuf[1024]; 2953 uint64_t is_zoned; 2954 2955 (void) snprintf(errbuf, sizeof (errbuf), 2956 dgettext(TEXT_DOMAIN, "cannot create '%s'"), path); 2957 2958 /* get parent, and check to see if this is just a pool */ 2959 if (parent_name(path, parent, sizeof (parent)) != 0) { 2960 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2961 "missing dataset name")); 2962 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 2963 } 2964 2965 /* check to see if the pool exists */ 2966 if ((slash = strchr(parent, '/')) == NULL) 2967 slash = parent + strlen(parent); 2968 (void) strncpy(zc.zc_name, parent, slash - parent); 2969 zc.zc_name[slash - parent] = '\0'; 2970 if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 && 2971 errno == ENOENT) { 2972 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2973 "no such pool '%s'"), zc.zc_name); 2974 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2975 } 2976 2977 /* check to see if the parent dataset exists */ 2978 while ((zhp = make_dataset_handle(hdl, parent)) == NULL) { 2979 if (errno == ENOENT && accept_ancestor) { 2980 /* 2981 * Go deeper to find an ancestor, give up on top level. 2982 */ 2983 if (parent_name(parent, parent, sizeof (parent)) != 0) { 2984 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2985 "no such pool '%s'"), zc.zc_name); 2986 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2987 } 2988 } else if (errno == ENOENT) { 2989 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2990 "parent does not exist")); 2991 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2992 } else 2993 return (zfs_standard_error(hdl, errno, errbuf)); 2994 } 2995 2996 is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 2997 if (zoned != NULL) 2998 *zoned = is_zoned; 2999 3000 /* we are in a non-global zone, but parent is in the global zone */ 3001 if (getzoneid() != GLOBAL_ZONEID && !is_zoned) { 3002 (void) zfs_standard_error(hdl, EPERM, errbuf); 3003 zfs_close(zhp); 3004 return (-1); 3005 } 3006 3007 /* make sure parent is a filesystem */ 3008 if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) { 3009 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3010 "parent is not a filesystem")); 3011 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 3012 zfs_close(zhp); 3013 return (-1); 3014 } 3015 3016 zfs_close(zhp); 3017 if (prefixlen != NULL) 3018 *prefixlen = strlen(parent); 3019 return (0); 3020 } 3021 3022 /* 3023 * Finds whether the dataset of the given type(s) exists. 3024 */ 3025 boolean_t 3026 zfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types) 3027 { 3028 zfs_handle_t *zhp; 3029 3030 if (!zfs_validate_name(hdl, path, types, B_FALSE)) 3031 return (B_FALSE); 3032 3033 /* 3034 * Try to get stats for the dataset, which will tell us if it exists. 3035 */ 3036 if ((zhp = make_dataset_handle(hdl, path)) != NULL) { 3037 int ds_type = zhp->zfs_type; 3038 3039 zfs_close(zhp); 3040 if (types & ds_type) 3041 return (B_TRUE); 3042 } 3043 return (B_FALSE); 3044 } 3045 3046 /* 3047 * Given a path to 'target', create all the ancestors between 3048 * the prefixlen portion of the path, and the target itself. 3049 * Fail if the initial prefixlen-ancestor does not already exist. 3050 */ 3051 int 3052 create_parents(libzfs_handle_t *hdl, char *target, int prefixlen) 3053 { 3054 zfs_handle_t *h; 3055 char *cp; 3056 const char *opname; 3057 3058 /* make sure prefix exists */ 3059 cp = target + prefixlen; 3060 if (*cp != '/') { 3061 assert(strchr(cp, '/') == NULL); 3062 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3063 } else { 3064 *cp = '\0'; 3065 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3066 *cp = '/'; 3067 } 3068 if (h == NULL) 3069 return (-1); 3070 zfs_close(h); 3071 3072 /* 3073 * Attempt to create, mount, and share any ancestor filesystems, 3074 * up to the prefixlen-long one. 3075 */ 3076 for (cp = target + prefixlen + 1; 3077 cp = strchr(cp, '/'); *cp = '/', cp++) { 3078 3079 *cp = '\0'; 3080 3081 h = make_dataset_handle(hdl, target); 3082 if (h) { 3083 /* it already exists, nothing to do here */ 3084 zfs_close(h); 3085 continue; 3086 } 3087 3088 if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM, 3089 NULL) != 0) { 3090 opname = dgettext(TEXT_DOMAIN, "create"); 3091 goto ancestorerr; 3092 } 3093 3094 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3095 if (h == NULL) { 3096 opname = dgettext(TEXT_DOMAIN, "open"); 3097 goto ancestorerr; 3098 } 3099 3100 if (zfs_mount(h, NULL, 0) != 0) { 3101 opname = dgettext(TEXT_DOMAIN, "mount"); 3102 goto ancestorerr; 3103 } 3104 3105 if (zfs_share(h) != 0) { 3106 opname = dgettext(TEXT_DOMAIN, "share"); 3107 goto ancestorerr; 3108 } 3109 3110 zfs_close(h); 3111 } 3112 3113 return (0); 3114 3115 ancestorerr: 3116 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3117 "failed to %s ancestor '%s'"), opname, target); 3118 return (-1); 3119 } 3120 3121 /* 3122 * Creates non-existing ancestors of the given path. 3123 */ 3124 int 3125 zfs_create_ancestors(libzfs_handle_t *hdl, const char *path) 3126 { 3127 int prefix; 3128 char *path_copy; 3129 int rc; 3130 3131 if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0) 3132 return (-1); 3133 3134 if ((path_copy = strdup(path)) != NULL) { 3135 rc = create_parents(hdl, path_copy, prefix); 3136 free(path_copy); 3137 } 3138 if (path_copy == NULL || rc != 0) 3139 return (-1); 3140 3141 return (0); 3142 } 3143 3144 /* 3145 * Create a new filesystem or volume. 3146 */ 3147 int 3148 zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, 3149 nvlist_t *props) 3150 { 3151 int ret; 3152 uint64_t size = 0; 3153 uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE); 3154 char errbuf[1024]; 3155 uint64_t zoned; 3156 dmu_objset_type_t ost; 3157 3158 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3159 "cannot create '%s'"), path); 3160 3161 /* validate the path, taking care to note the extended error message */ 3162 if (!zfs_validate_name(hdl, path, type, B_TRUE)) 3163 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3164 3165 /* validate parents exist */ 3166 if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0) 3167 return (-1); 3168 3169 /* 3170 * The failure modes when creating a dataset of a different type over 3171 * one that already exists is a little strange. In particular, if you 3172 * try to create a dataset on top of an existing dataset, the ioctl() 3173 * will return ENOENT, not EEXIST. To prevent this from happening, we 3174 * first try to see if the dataset exists. 3175 */ 3176 if (zfs_dataset_exists(hdl, path, ZFS_TYPE_DATASET)) { 3177 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3178 "dataset already exists")); 3179 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3180 } 3181 3182 if (type == ZFS_TYPE_VOLUME) 3183 ost = DMU_OST_ZVOL; 3184 else 3185 ost = DMU_OST_ZFS; 3186 3187 if (props && (props = zfs_valid_proplist(hdl, type, props, 3188 zoned, NULL, errbuf)) == 0) 3189 return (-1); 3190 3191 if (type == ZFS_TYPE_VOLUME) { 3192 /* 3193 * If we are creating a volume, the size and block size must 3194 * satisfy a few restraints. First, the blocksize must be a 3195 * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the 3196 * volsize must be a multiple of the block size, and cannot be 3197 * zero. 3198 */ 3199 if (props == NULL || nvlist_lookup_uint64(props, 3200 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) { 3201 nvlist_free(props); 3202 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3203 "missing volume size")); 3204 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3205 } 3206 3207 if ((ret = nvlist_lookup_uint64(props, 3208 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3209 &blocksize)) != 0) { 3210 if (ret == ENOENT) { 3211 blocksize = zfs_prop_default_numeric( 3212 ZFS_PROP_VOLBLOCKSIZE); 3213 } else { 3214 nvlist_free(props); 3215 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3216 "missing volume block size")); 3217 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3218 } 3219 } 3220 3221 if (size == 0) { 3222 nvlist_free(props); 3223 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3224 "volume size cannot be zero")); 3225 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3226 } 3227 3228 if (size % blocksize != 0) { 3229 nvlist_free(props); 3230 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3231 "volume size must be a multiple of volume block " 3232 "size")); 3233 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3234 } 3235 } 3236 3237 /* create the dataset */ 3238 ret = lzc_create(path, ost, props); 3239 nvlist_free(props); 3240 3241 /* check for failure */ 3242 if (ret != 0) { 3243 char parent[ZFS_MAXNAMELEN]; 3244 (void) parent_name(path, parent, sizeof (parent)); 3245 3246 switch (errno) { 3247 case ENOENT: 3248 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3249 "no such parent '%s'"), parent); 3250 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3251 3252 case EINVAL: 3253 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3254 "parent '%s' is not a filesystem"), parent); 3255 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3256 3257 case EDOM: 3258 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3259 "volume block size must be power of 2 from " 3260 "512B to 128KB")); 3261 3262 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3263 3264 case ENOTSUP: 3265 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3266 "pool must be upgraded to set this " 3267 "property or value")); 3268 return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); 3269 #ifdef _ILP32 3270 case EOVERFLOW: 3271 /* 3272 * This platform can't address a volume this big. 3273 */ 3274 if (type == ZFS_TYPE_VOLUME) 3275 return (zfs_error(hdl, EZFS_VOLTOOBIG, 3276 errbuf)); 3277 #endif 3278 /* FALLTHROUGH */ 3279 default: 3280 return (zfs_standard_error(hdl, errno, errbuf)); 3281 } 3282 } 3283 3284 return (0); 3285 } 3286 3287 /* 3288 * Destroys the given dataset. The caller must make sure that the filesystem 3289 * isn't mounted, and that there are no active dependents. If the file system 3290 * does not exist this function does nothing. 3291 */ 3292 int 3293 zfs_destroy(zfs_handle_t *zhp, boolean_t defer) 3294 { 3295 zfs_cmd_t zc = { 0 }; 3296 3297 if (zhp->zfs_type == ZFS_TYPE_BOOKMARK) { 3298 nvlist_t *nv = fnvlist_alloc(); 3299 fnvlist_add_boolean(nv, zhp->zfs_name); 3300 int error = lzc_destroy_bookmarks(nv, NULL); 3301 fnvlist_free(nv); 3302 if (error != 0) { 3303 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3304 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3305 zhp->zfs_name)); 3306 } 3307 return (0); 3308 } 3309 3310 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3311 3312 if (ZFS_IS_VOLUME(zhp)) { 3313 zc.zc_objset_type = DMU_OST_ZVOL; 3314 } else { 3315 zc.zc_objset_type = DMU_OST_ZFS; 3316 } 3317 3318 zc.zc_defer_destroy = defer; 3319 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0 && 3320 errno != ENOENT) { 3321 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3322 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3323 zhp->zfs_name)); 3324 } 3325 3326 remove_mountpoint(zhp); 3327 3328 return (0); 3329 } 3330 3331 struct destroydata { 3332 nvlist_t *nvl; 3333 const char *snapname; 3334 }; 3335 3336 static int 3337 zfs_check_snap_cb(zfs_handle_t *zhp, void *arg) 3338 { 3339 struct destroydata *dd = arg; 3340 char name[ZFS_MAXNAMELEN]; 3341 int rv = 0; 3342 3343 (void) snprintf(name, sizeof (name), 3344 "%s@%s", zhp->zfs_name, dd->snapname); 3345 3346 if (lzc_exists(name)) 3347 verify(nvlist_add_boolean(dd->nvl, name) == 0); 3348 3349 rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, dd); 3350 zfs_close(zhp); 3351 return (rv); 3352 } 3353 3354 /* 3355 * Destroys all snapshots with the given name in zhp & descendants. 3356 */ 3357 int 3358 zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer) 3359 { 3360 int ret; 3361 struct destroydata dd = { 0 }; 3362 3363 dd.snapname = snapname; 3364 verify(nvlist_alloc(&dd.nvl, NV_UNIQUE_NAME, 0) == 0); 3365 (void) zfs_check_snap_cb(zfs_handle_dup(zhp), &dd); 3366 3367 if (nvlist_empty(dd.nvl)) { 3368 ret = zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT, 3369 dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"), 3370 zhp->zfs_name, snapname); 3371 } else { 3372 ret = zfs_destroy_snaps_nvl(zhp->zfs_hdl, dd.nvl, defer); 3373 } 3374 nvlist_free(dd.nvl); 3375 return (ret); 3376 } 3377 3378 /* 3379 * Destroys all the snapshots named in the nvlist. 3380 */ 3381 int 3382 zfs_destroy_snaps_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, boolean_t defer) 3383 { 3384 int ret; 3385 nvlist_t *errlist; 3386 3387 ret = lzc_destroy_snaps(snaps, defer, &errlist); 3388 3389 if (ret == 0) 3390 return (0); 3391 3392 if (nvlist_empty(errlist)) { 3393 char errbuf[1024]; 3394 (void) snprintf(errbuf, sizeof (errbuf), 3395 dgettext(TEXT_DOMAIN, "cannot destroy snapshots")); 3396 3397 ret = zfs_standard_error(hdl, ret, errbuf); 3398 } 3399 for (nvpair_t *pair = nvlist_next_nvpair(errlist, NULL); 3400 pair != NULL; pair = nvlist_next_nvpair(errlist, pair)) { 3401 char errbuf[1024]; 3402 (void) snprintf(errbuf, sizeof (errbuf), 3403 dgettext(TEXT_DOMAIN, "cannot destroy snapshot %s"), 3404 nvpair_name(pair)); 3405 3406 switch (fnvpair_value_int32(pair)) { 3407 case EEXIST: 3408 zfs_error_aux(hdl, 3409 dgettext(TEXT_DOMAIN, "snapshot is cloned")); 3410 ret = zfs_error(hdl, EZFS_EXISTS, errbuf); 3411 break; 3412 default: 3413 ret = zfs_standard_error(hdl, errno, errbuf); 3414 break; 3415 } 3416 } 3417 3418 return (ret); 3419 } 3420 3421 /* 3422 * Clones the given dataset. The target must be of the same type as the source. 3423 */ 3424 int 3425 zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props) 3426 { 3427 char parent[ZFS_MAXNAMELEN]; 3428 int ret; 3429 char errbuf[1024]; 3430 libzfs_handle_t *hdl = zhp->zfs_hdl; 3431 uint64_t zoned; 3432 3433 assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); 3434 3435 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3436 "cannot create '%s'"), target); 3437 3438 /* validate the target/clone name */ 3439 if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE)) 3440 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3441 3442 /* validate parents exist */ 3443 if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0) 3444 return (-1); 3445 3446 (void) parent_name(target, parent, sizeof (parent)); 3447 3448 /* do the clone */ 3449 3450 if (props) { 3451 zfs_type_t type; 3452 if (ZFS_IS_VOLUME(zhp)) { 3453 type = ZFS_TYPE_VOLUME; 3454 } else { 3455 type = ZFS_TYPE_FILESYSTEM; 3456 } 3457 if ((props = zfs_valid_proplist(hdl, type, props, zoned, 3458 zhp, errbuf)) == NULL) 3459 return (-1); 3460 } 3461 3462 ret = lzc_clone(target, zhp->zfs_name, props); 3463 nvlist_free(props); 3464 3465 if (ret != 0) { 3466 switch (errno) { 3467 3468 case ENOENT: 3469 /* 3470 * The parent doesn't exist. We should have caught this 3471 * above, but there may a race condition that has since 3472 * destroyed the parent. 3473 * 3474 * At this point, we don't know whether it's the source 3475 * that doesn't exist anymore, or whether the target 3476 * dataset doesn't exist. 3477 */ 3478 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3479 "no such parent '%s'"), parent); 3480 return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); 3481 3482 case EXDEV: 3483 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3484 "source and target pools differ")); 3485 return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET, 3486 errbuf)); 3487 3488 default: 3489 return (zfs_standard_error(zhp->zfs_hdl, errno, 3490 errbuf)); 3491 } 3492 } 3493 3494 return (ret); 3495 } 3496 3497 /* 3498 * Promotes the given clone fs to be the clone parent. 3499 */ 3500 int 3501 zfs_promote(zfs_handle_t *zhp) 3502 { 3503 libzfs_handle_t *hdl = zhp->zfs_hdl; 3504 zfs_cmd_t zc = { 0 }; 3505 char parent[MAXPATHLEN]; 3506 int ret; 3507 char errbuf[1024]; 3508 3509 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3510 "cannot promote '%s'"), zhp->zfs_name); 3511 3512 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3513 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3514 "snapshots can not be promoted")); 3515 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3516 } 3517 3518 (void) strlcpy(parent, zhp->zfs_dmustats.dds_origin, sizeof (parent)); 3519 if (parent[0] == '\0') { 3520 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3521 "not a cloned filesystem")); 3522 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3523 } 3524 3525 (void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_origin, 3526 sizeof (zc.zc_value)); 3527 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3528 ret = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); 3529 3530 if (ret != 0) { 3531 int save_errno = errno; 3532 3533 switch (save_errno) { 3534 case EEXIST: 3535 /* There is a conflicting snapshot name. */ 3536 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3537 "conflicting snapshot '%s' from parent '%s'"), 3538 zc.zc_string, parent); 3539 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3540 3541 default: 3542 return (zfs_standard_error(hdl, save_errno, errbuf)); 3543 } 3544 } 3545 return (ret); 3546 } 3547 3548 typedef struct snapdata { 3549 nvlist_t *sd_nvl; 3550 const char *sd_snapname; 3551 } snapdata_t; 3552 3553 static int 3554 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg) 3555 { 3556 snapdata_t *sd = arg; 3557 char name[ZFS_MAXNAMELEN]; 3558 int rv = 0; 3559 3560 if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) == 0) { 3561 (void) snprintf(name, sizeof (name), 3562 "%s@%s", zfs_get_name(zhp), sd->sd_snapname); 3563 3564 fnvlist_add_boolean(sd->sd_nvl, name); 3565 3566 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd); 3567 } 3568 zfs_close(zhp); 3569 3570 return (rv); 3571 } 3572 3573 /* 3574 * Creates snapshots. The keys in the snaps nvlist are the snapshots to be 3575 * created. 3576 */ 3577 int 3578 zfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, nvlist_t *props) 3579 { 3580 int ret; 3581 char errbuf[1024]; 3582 nvpair_t *elem; 3583 nvlist_t *errors; 3584 3585 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3586 "cannot create snapshots ")); 3587 3588 elem = NULL; 3589 while ((elem = nvlist_next_nvpair(snaps, elem)) != NULL) { 3590 const char *snapname = nvpair_name(elem); 3591 3592 /* validate the target name */ 3593 if (!zfs_validate_name(hdl, snapname, ZFS_TYPE_SNAPSHOT, 3594 B_TRUE)) { 3595 (void) snprintf(errbuf, sizeof (errbuf), 3596 dgettext(TEXT_DOMAIN, 3597 "cannot create snapshot '%s'"), snapname); 3598 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3599 } 3600 } 3601 3602 if (props != NULL && 3603 (props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT, 3604 props, B_FALSE, NULL, errbuf)) == NULL) { 3605 return (-1); 3606 } 3607 3608 ret = lzc_snapshot(snaps, props, &errors); 3609 3610 if (ret != 0) { 3611 boolean_t printed = B_FALSE; 3612 for (elem = nvlist_next_nvpair(errors, NULL); 3613 elem != NULL; 3614 elem = nvlist_next_nvpair(errors, elem)) { 3615 (void) snprintf(errbuf, sizeof (errbuf), 3616 dgettext(TEXT_DOMAIN, 3617 "cannot create snapshot '%s'"), nvpair_name(elem)); 3618 (void) zfs_standard_error(hdl, 3619 fnvpair_value_int32(elem), errbuf); 3620 printed = B_TRUE; 3621 } 3622 if (!printed) { 3623 switch (ret) { 3624 case EXDEV: 3625 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3626 "multiple snapshots of same " 3627 "fs not allowed")); 3628 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 3629 3630 break; 3631 default: 3632 (void) zfs_standard_error(hdl, ret, errbuf); 3633 } 3634 } 3635 } 3636 3637 nvlist_free(props); 3638 nvlist_free(errors); 3639 return (ret); 3640 } 3641 3642 int 3643 zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive, 3644 nvlist_t *props) 3645 { 3646 int ret; 3647 snapdata_t sd = { 0 }; 3648 char fsname[ZFS_MAXNAMELEN]; 3649 char *cp; 3650 zfs_handle_t *zhp; 3651 char errbuf[1024]; 3652 3653 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3654 "cannot snapshot %s"), path); 3655 3656 if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE)) 3657 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3658 3659 (void) strlcpy(fsname, path, sizeof (fsname)); 3660 cp = strchr(fsname, '@'); 3661 *cp = '\0'; 3662 sd.sd_snapname = cp + 1; 3663 3664 if ((zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM | 3665 ZFS_TYPE_VOLUME)) == NULL) { 3666 return (-1); 3667 } 3668 3669 verify(nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) == 0); 3670 if (recursive) { 3671 (void) zfs_snapshot_cb(zfs_handle_dup(zhp), &sd); 3672 } else { 3673 fnvlist_add_boolean(sd.sd_nvl, path); 3674 } 3675 3676 ret = zfs_snapshot_nvl(hdl, sd.sd_nvl, props); 3677 nvlist_free(sd.sd_nvl); 3678 zfs_close(zhp); 3679 return (ret); 3680 } 3681 3682 /* 3683 * Destroy any more recent snapshots. We invoke this callback on any dependents 3684 * of the snapshot first. If the 'cb_dependent' member is non-zero, then this 3685 * is a dependent and we should just destroy it without checking the transaction 3686 * group. 3687 */ 3688 typedef struct rollback_data { 3689 const char *cb_target; /* the snapshot */ 3690 uint64_t cb_create; /* creation time reference */ 3691 boolean_t cb_error; 3692 boolean_t cb_force; 3693 } rollback_data_t; 3694 3695 static int 3696 rollback_destroy_dependent(zfs_handle_t *zhp, void *data) 3697 { 3698 rollback_data_t *cbp = data; 3699 prop_changelist_t *clp; 3700 3701 /* We must destroy this clone; first unmount it */ 3702 clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, 3703 cbp->cb_force ? MS_FORCE: 0); 3704 if (clp == NULL || changelist_prefix(clp) != 0) { 3705 cbp->cb_error = B_TRUE; 3706 zfs_close(zhp); 3707 return (0); 3708 } 3709 if (zfs_destroy(zhp, B_FALSE) != 0) 3710 cbp->cb_error = B_TRUE; 3711 else 3712 changelist_remove(clp, zhp->zfs_name); 3713 (void) changelist_postfix(clp); 3714 changelist_free(clp); 3715 3716 zfs_close(zhp); 3717 return (0); 3718 } 3719 3720 static int 3721 rollback_destroy(zfs_handle_t *zhp, void *data) 3722 { 3723 rollback_data_t *cbp = data; 3724 3725 if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) { 3726 cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE, 3727 rollback_destroy_dependent, cbp); 3728 3729 cbp->cb_error |= zfs_destroy(zhp, B_FALSE); 3730 } 3731 3732 zfs_close(zhp); 3733 return (0); 3734 } 3735 3736 /* 3737 * Given a dataset, rollback to a specific snapshot, discarding any 3738 * data changes since then and making it the active dataset. 3739 * 3740 * Any snapshots and bookmarks more recent than the target are 3741 * destroyed, along with their dependents (i.e. clones). 3742 */ 3743 int 3744 zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) 3745 { 3746 rollback_data_t cb = { 0 }; 3747 int err; 3748 boolean_t restore_resv = 0; 3749 uint64_t old_volsize, new_volsize; 3750 zfs_prop_t resv_prop; 3751 3752 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM || 3753 zhp->zfs_type == ZFS_TYPE_VOLUME); 3754 3755 /* 3756 * Destroy all recent snapshots and their dependents. 3757 */ 3758 cb.cb_force = force; 3759 cb.cb_target = snap->zfs_name; 3760 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 3761 (void) zfs_iter_snapshots(zhp, rollback_destroy, &cb); 3762 (void) zfs_iter_bookmarks(zhp, rollback_destroy, &cb); 3763 3764 if (cb.cb_error) 3765 return (-1); 3766 3767 /* 3768 * Now that we have verified that the snapshot is the latest, 3769 * rollback to the given snapshot. 3770 */ 3771 3772 if (zhp->zfs_type == ZFS_TYPE_VOLUME) { 3773 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 3774 return (-1); 3775 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3776 restore_resv = 3777 (old_volsize == zfs_prop_get_int(zhp, resv_prop)); 3778 } 3779 3780 /* 3781 * We rely on zfs_iter_children() to verify that there are no 3782 * newer snapshots for the given dataset. Therefore, we can 3783 * simply pass the name on to the ioctl() call. There is still 3784 * an unlikely race condition where the user has taken a 3785 * snapshot since we verified that this was the most recent. 3786 */ 3787 err = lzc_rollback(zhp->zfs_name, NULL, 0); 3788 if (err != 0) { 3789 (void) zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3790 dgettext(TEXT_DOMAIN, "cannot rollback '%s'"), 3791 zhp->zfs_name); 3792 return (err); 3793 } 3794 3795 /* 3796 * For volumes, if the pre-rollback volsize matched the pre- 3797 * rollback reservation and the volsize has changed then set 3798 * the reservation property to the post-rollback volsize. 3799 * Make a new handle since the rollback closed the dataset. 3800 */ 3801 if ((zhp->zfs_type == ZFS_TYPE_VOLUME) && 3802 (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) { 3803 if (restore_resv) { 3804 new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3805 if (old_volsize != new_volsize) 3806 err = zfs_prop_set_int(zhp, resv_prop, 3807 new_volsize); 3808 } 3809 zfs_close(zhp); 3810 } 3811 return (err); 3812 } 3813 3814 /* 3815 * Renames the given dataset. 3816 */ 3817 int 3818 zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive, 3819 boolean_t force_unmount) 3820 { 3821 int ret; 3822 zfs_cmd_t zc = { 0 }; 3823 char *delim; 3824 prop_changelist_t *cl = NULL; 3825 zfs_handle_t *zhrp = NULL; 3826 char *parentname = NULL; 3827 char parent[ZFS_MAXNAMELEN]; 3828 libzfs_handle_t *hdl = zhp->zfs_hdl; 3829 char errbuf[1024]; 3830 3831 /* if we have the same exact name, just return success */ 3832 if (strcmp(zhp->zfs_name, target) == 0) 3833 return (0); 3834 3835 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3836 "cannot rename to '%s'"), target); 3837 3838 /* 3839 * Make sure the target name is valid 3840 */ 3841 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3842 if ((strchr(target, '@') == NULL) || 3843 *target == '@') { 3844 /* 3845 * Snapshot target name is abbreviated, 3846 * reconstruct full dataset name 3847 */ 3848 (void) strlcpy(parent, zhp->zfs_name, 3849 sizeof (parent)); 3850 delim = strchr(parent, '@'); 3851 if (strchr(target, '@') == NULL) 3852 *(++delim) = '\0'; 3853 else 3854 *delim = '\0'; 3855 (void) strlcat(parent, target, sizeof (parent)); 3856 target = parent; 3857 } else { 3858 /* 3859 * Make sure we're renaming within the same dataset. 3860 */ 3861 delim = strchr(target, '@'); 3862 if (strncmp(zhp->zfs_name, target, delim - target) 3863 != 0 || zhp->zfs_name[delim - target] != '@') { 3864 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3865 "snapshots must be part of same " 3866 "dataset")); 3867 return (zfs_error(hdl, EZFS_CROSSTARGET, 3868 errbuf)); 3869 } 3870 } 3871 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3872 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3873 } else { 3874 if (recursive) { 3875 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3876 "recursive rename must be a snapshot")); 3877 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3878 } 3879 3880 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3881 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3882 3883 /* validate parents */ 3884 if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0) 3885 return (-1); 3886 3887 /* make sure we're in the same pool */ 3888 verify((delim = strchr(target, '/')) != NULL); 3889 if (strncmp(zhp->zfs_name, target, delim - target) != 0 || 3890 zhp->zfs_name[delim - target] != '/') { 3891 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3892 "datasets must be within same pool")); 3893 return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); 3894 } 3895 3896 /* new name cannot be a child of the current dataset name */ 3897 if (is_descendant(zhp->zfs_name, target)) { 3898 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3899 "New dataset name cannot be a descendant of " 3900 "current dataset name")); 3901 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3902 } 3903 } 3904 3905 (void) snprintf(errbuf, sizeof (errbuf), 3906 dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name); 3907 3908 if (getzoneid() == GLOBAL_ZONEID && 3909 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 3910 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3911 "dataset is used in a non-global zone")); 3912 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 3913 } 3914 3915 if (recursive) { 3916 parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name); 3917 if (parentname == NULL) { 3918 ret = -1; 3919 goto error; 3920 } 3921 delim = strchr(parentname, '@'); 3922 *delim = '\0'; 3923 zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET); 3924 if (zhrp == NULL) { 3925 ret = -1; 3926 goto error; 3927 } 3928 } else if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) { 3929 if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 0, 3930 force_unmount ? MS_FORCE : 0)) == NULL) 3931 return (-1); 3932 3933 if (changelist_haszonedchild(cl)) { 3934 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3935 "child dataset with inherited mountpoint is used " 3936 "in a non-global zone")); 3937 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 3938 goto error; 3939 } 3940 3941 if ((ret = changelist_prefix(cl)) != 0) 3942 goto error; 3943 } 3944 3945 if (ZFS_IS_VOLUME(zhp)) 3946 zc.zc_objset_type = DMU_OST_ZVOL; 3947 else 3948 zc.zc_objset_type = DMU_OST_ZFS; 3949 3950 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3951 (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value)); 3952 3953 zc.zc_cookie = recursive; 3954 3955 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) { 3956 /* 3957 * if it was recursive, the one that actually failed will 3958 * be in zc.zc_name 3959 */ 3960 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3961 "cannot rename '%s'"), zc.zc_name); 3962 3963 if (recursive && errno == EEXIST) { 3964 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3965 "a child dataset already has a snapshot " 3966 "with the new name")); 3967 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 3968 } else { 3969 (void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf); 3970 } 3971 3972 /* 3973 * On failure, we still want to remount any filesystems that 3974 * were previously mounted, so we don't alter the system state. 3975 */ 3976 if (cl != NULL) 3977 (void) changelist_postfix(cl); 3978 } else { 3979 if (cl != NULL) { 3980 changelist_rename(cl, zfs_get_name(zhp), target); 3981 ret = changelist_postfix(cl); 3982 } 3983 } 3984 3985 error: 3986 if (parentname != NULL) { 3987 free(parentname); 3988 } 3989 if (zhrp != NULL) { 3990 zfs_close(zhrp); 3991 } 3992 if (cl != NULL) { 3993 changelist_free(cl); 3994 } 3995 return (ret); 3996 } 3997 3998 nvlist_t * 3999 zfs_get_user_props(zfs_handle_t *zhp) 4000 { 4001 return (zhp->zfs_user_props); 4002 } 4003 4004 nvlist_t * 4005 zfs_get_recvd_props(zfs_handle_t *zhp) 4006 { 4007 if (zhp->zfs_recvd_props == NULL) 4008 if (get_recvd_props_ioctl(zhp) != 0) 4009 return (NULL); 4010 return (zhp->zfs_recvd_props); 4011 } 4012 4013 /* 4014 * This function is used by 'zfs list' to determine the exact set of columns to 4015 * display, and their maximum widths. This does two main things: 4016 * 4017 * - If this is a list of all properties, then expand the list to include 4018 * all native properties, and set a flag so that for each dataset we look 4019 * for new unique user properties and add them to the list. 4020 * 4021 * - For non fixed-width properties, keep track of the maximum width seen 4022 * so that we can size the column appropriately. If the user has 4023 * requested received property values, we also need to compute the width 4024 * of the RECEIVED column. 4025 */ 4026 int 4027 zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received, 4028 boolean_t literal) 4029 { 4030 libzfs_handle_t *hdl = zhp->zfs_hdl; 4031 zprop_list_t *entry; 4032 zprop_list_t **last, **start; 4033 nvlist_t *userprops, *propval; 4034 nvpair_t *elem; 4035 char *strval; 4036 char buf[ZFS_MAXPROPLEN]; 4037 4038 if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0) 4039 return (-1); 4040 4041 userprops = zfs_get_user_props(zhp); 4042 4043 entry = *plp; 4044 if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) { 4045 /* 4046 * Go through and add any user properties as necessary. We 4047 * start by incrementing our list pointer to the first 4048 * non-native property. 4049 */ 4050 start = plp; 4051 while (*start != NULL) { 4052 if ((*start)->pl_prop == ZPROP_INVAL) 4053 break; 4054 start = &(*start)->pl_next; 4055 } 4056 4057 elem = NULL; 4058 while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) { 4059 /* 4060 * See if we've already found this property in our list. 4061 */ 4062 for (last = start; *last != NULL; 4063 last = &(*last)->pl_next) { 4064 if (strcmp((*last)->pl_user_prop, 4065 nvpair_name(elem)) == 0) 4066 break; 4067 } 4068 4069 if (*last == NULL) { 4070 if ((entry = zfs_alloc(hdl, 4071 sizeof (zprop_list_t))) == NULL || 4072 ((entry->pl_user_prop = zfs_strdup(hdl, 4073 nvpair_name(elem)))) == NULL) { 4074 free(entry); 4075 return (-1); 4076 } 4077 4078 entry->pl_prop = ZPROP_INVAL; 4079 entry->pl_width = strlen(nvpair_name(elem)); 4080 entry->pl_all = B_TRUE; 4081 *last = entry; 4082 } 4083 } 4084 } 4085 4086 /* 4087 * Now go through and check the width of any non-fixed columns 4088 */ 4089 for (entry = *plp; entry != NULL; entry = entry->pl_next) { 4090 if (entry->pl_fixed && !literal) 4091 continue; 4092 4093 if (entry->pl_prop != ZPROP_INVAL) { 4094 if (zfs_prop_get(zhp, entry->pl_prop, 4095 buf, sizeof (buf), NULL, NULL, 0, literal) == 0) { 4096 if (strlen(buf) > entry->pl_width) 4097 entry->pl_width = strlen(buf); 4098 } 4099 if (received && zfs_prop_get_recvd(zhp, 4100 zfs_prop_to_name(entry->pl_prop), 4101 buf, sizeof (buf), literal) == 0) 4102 if (strlen(buf) > entry->pl_recvd_width) 4103 entry->pl_recvd_width = strlen(buf); 4104 } else { 4105 if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop, 4106 &propval) == 0) { 4107 verify(nvlist_lookup_string(propval, 4108 ZPROP_VALUE, &strval) == 0); 4109 if (strlen(strval) > entry->pl_width) 4110 entry->pl_width = strlen(strval); 4111 } 4112 if (received && zfs_prop_get_recvd(zhp, 4113 entry->pl_user_prop, 4114 buf, sizeof (buf), literal) == 0) 4115 if (strlen(buf) > entry->pl_recvd_width) 4116 entry->pl_recvd_width = strlen(buf); 4117 } 4118 } 4119 4120 return (0); 4121 } 4122 4123 int 4124 zfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path, 4125 char *resource, void *export, void *sharetab, 4126 int sharemax, zfs_share_op_t operation) 4127 { 4128 zfs_cmd_t zc = { 0 }; 4129 int error; 4130 4131 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4132 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4133 if (resource) 4134 (void) strlcpy(zc.zc_string, resource, sizeof (zc.zc_string)); 4135 zc.zc_share.z_sharedata = (uint64_t)(uintptr_t)sharetab; 4136 zc.zc_share.z_exportdata = (uint64_t)(uintptr_t)export; 4137 zc.zc_share.z_sharetype = operation; 4138 zc.zc_share.z_sharemax = sharemax; 4139 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SHARE, &zc); 4140 return (error); 4141 } 4142 4143 void 4144 zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props) 4145 { 4146 nvpair_t *curr; 4147 4148 /* 4149 * Keep a reference to the props-table against which we prune the 4150 * properties. 4151 */ 4152 zhp->zfs_props_table = props; 4153 4154 curr = nvlist_next_nvpair(zhp->zfs_props, NULL); 4155 4156 while (curr) { 4157 zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr)); 4158 nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr); 4159 4160 /* 4161 * User properties will result in ZPROP_INVAL, and since we 4162 * only know how to prune standard ZFS properties, we always 4163 * leave these in the list. This can also happen if we 4164 * encounter an unknown DSL property (when running older 4165 * software, for example). 4166 */ 4167 if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE) 4168 (void) nvlist_remove(zhp->zfs_props, 4169 nvpair_name(curr), nvpair_type(curr)); 4170 curr = next; 4171 } 4172 } 4173 4174 static int 4175 zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path, 4176 zfs_smb_acl_op_t cmd, char *resource1, char *resource2) 4177 { 4178 zfs_cmd_t zc = { 0 }; 4179 nvlist_t *nvlist = NULL; 4180 int error; 4181 4182 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4183 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4184 zc.zc_cookie = (uint64_t)cmd; 4185 4186 if (cmd == ZFS_SMB_ACL_RENAME) { 4187 if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) { 4188 (void) no_memory(hdl); 4189 return (0); 4190 } 4191 } 4192 4193 switch (cmd) { 4194 case ZFS_SMB_ACL_ADD: 4195 case ZFS_SMB_ACL_REMOVE: 4196 (void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string)); 4197 break; 4198 case ZFS_SMB_ACL_RENAME: 4199 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC, 4200 resource1) != 0) { 4201 (void) no_memory(hdl); 4202 return (-1); 4203 } 4204 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET, 4205 resource2) != 0) { 4206 (void) no_memory(hdl); 4207 return (-1); 4208 } 4209 if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) { 4210 nvlist_free(nvlist); 4211 return (-1); 4212 } 4213 break; 4214 case ZFS_SMB_ACL_PURGE: 4215 break; 4216 default: 4217 return (-1); 4218 } 4219 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc); 4220 if (nvlist) 4221 nvlist_free(nvlist); 4222 return (error); 4223 } 4224 4225 int 4226 zfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset, 4227 char *path, char *resource) 4228 { 4229 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD, 4230 resource, NULL)); 4231 } 4232 4233 int 4234 zfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset, 4235 char *path, char *resource) 4236 { 4237 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE, 4238 resource, NULL)); 4239 } 4240 4241 int 4242 zfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path) 4243 { 4244 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE, 4245 NULL, NULL)); 4246 } 4247 4248 int 4249 zfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path, 4250 char *oldname, char *newname) 4251 { 4252 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME, 4253 oldname, newname)); 4254 } 4255 4256 int 4257 zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type, 4258 zfs_userspace_cb_t func, void *arg) 4259 { 4260 zfs_cmd_t zc = { 0 }; 4261 zfs_useracct_t buf[100]; 4262 libzfs_handle_t *hdl = zhp->zfs_hdl; 4263 int ret; 4264 4265 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4266 4267 zc.zc_objset_type = type; 4268 zc.zc_nvlist_dst = (uintptr_t)buf; 4269 4270 for (;;) { 4271 zfs_useracct_t *zua = buf; 4272 4273 zc.zc_nvlist_dst_size = sizeof (buf); 4274 if (zfs_ioctl(hdl, ZFS_IOC_USERSPACE_MANY, &zc) != 0) { 4275 char errbuf[1024]; 4276 4277 (void) snprintf(errbuf, sizeof (errbuf), 4278 dgettext(TEXT_DOMAIN, 4279 "cannot get used/quota for %s"), zc.zc_name); 4280 return (zfs_standard_error_fmt(hdl, errno, errbuf)); 4281 } 4282 if (zc.zc_nvlist_dst_size == 0) 4283 break; 4284 4285 while (zc.zc_nvlist_dst_size > 0) { 4286 if ((ret = func(arg, zua->zu_domain, zua->zu_rid, 4287 zua->zu_space)) != 0) 4288 return (ret); 4289 zua++; 4290 zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t); 4291 } 4292 } 4293 4294 return (0); 4295 } 4296 4297 struct holdarg { 4298 nvlist_t *nvl; 4299 const char *snapname; 4300 const char *tag; 4301 boolean_t recursive; 4302 int error; 4303 }; 4304 4305 static int 4306 zfs_hold_one(zfs_handle_t *zhp, void *arg) 4307 { 4308 struct holdarg *ha = arg; 4309 char name[ZFS_MAXNAMELEN]; 4310 int rv = 0; 4311 4312 (void) snprintf(name, sizeof (name), 4313 "%s@%s", zhp->zfs_name, ha->snapname); 4314 4315 if (lzc_exists(name)) 4316 fnvlist_add_string(ha->nvl, name, ha->tag); 4317 4318 if (ha->recursive) 4319 rv = zfs_iter_filesystems(zhp, zfs_hold_one, ha); 4320 zfs_close(zhp); 4321 return (rv); 4322 } 4323 4324 int 4325 zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag, 4326 boolean_t recursive, int cleanup_fd) 4327 { 4328 int ret; 4329 struct holdarg ha; 4330 4331 ha.nvl = fnvlist_alloc(); 4332 ha.snapname = snapname; 4333 ha.tag = tag; 4334 ha.recursive = recursive; 4335 (void) zfs_hold_one(zfs_handle_dup(zhp), &ha); 4336 4337 if (nvlist_empty(ha.nvl)) { 4338 char errbuf[1024]; 4339 4340 fnvlist_free(ha.nvl); 4341 ret = ENOENT; 4342 (void) snprintf(errbuf, sizeof (errbuf), 4343 dgettext(TEXT_DOMAIN, 4344 "cannot hold snapshot '%s@%s'"), 4345 zhp->zfs_name, snapname); 4346 (void) zfs_standard_error(zhp->zfs_hdl, ret, errbuf); 4347 return (ret); 4348 } 4349 4350 ret = zfs_hold_nvl(zhp, cleanup_fd, ha.nvl); 4351 fnvlist_free(ha.nvl); 4352 4353 return (ret); 4354 } 4355 4356 int 4357 zfs_hold_nvl(zfs_handle_t *zhp, int cleanup_fd, nvlist_t *holds) 4358 { 4359 int ret; 4360 nvlist_t *errors; 4361 libzfs_handle_t *hdl = zhp->zfs_hdl; 4362 char errbuf[1024]; 4363 nvpair_t *elem; 4364 4365 errors = NULL; 4366 ret = lzc_hold(holds, cleanup_fd, &errors); 4367 4368 if (ret == 0) { 4369 /* There may be errors even in the success case. */ 4370 fnvlist_free(errors); 4371 return (0); 4372 } 4373 4374 if (nvlist_empty(errors)) { 4375 /* no hold-specific errors */ 4376 (void) snprintf(errbuf, sizeof (errbuf), 4377 dgettext(TEXT_DOMAIN, "cannot hold")); 4378 switch (ret) { 4379 case ENOTSUP: 4380 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4381 "pool must be upgraded")); 4382 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4383 break; 4384 case EINVAL: 4385 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4386 break; 4387 default: 4388 (void) zfs_standard_error(hdl, ret, errbuf); 4389 } 4390 } 4391 4392 for (elem = nvlist_next_nvpair(errors, NULL); 4393 elem != NULL; 4394 elem = nvlist_next_nvpair(errors, elem)) { 4395 (void) snprintf(errbuf, sizeof (errbuf), 4396 dgettext(TEXT_DOMAIN, 4397 "cannot hold snapshot '%s'"), nvpair_name(elem)); 4398 switch (fnvpair_value_int32(elem)) { 4399 case E2BIG: 4400 /* 4401 * Temporary tags wind up having the ds object id 4402 * prepended. So even if we passed the length check 4403 * above, it's still possible for the tag to wind 4404 * up being slightly too long. 4405 */ 4406 (void) zfs_error(hdl, EZFS_TAGTOOLONG, errbuf); 4407 break; 4408 case EINVAL: 4409 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4410 break; 4411 case EEXIST: 4412 (void) zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf); 4413 break; 4414 default: 4415 (void) zfs_standard_error(hdl, 4416 fnvpair_value_int32(elem), errbuf); 4417 } 4418 } 4419 4420 fnvlist_free(errors); 4421 return (ret); 4422 } 4423 4424 static int 4425 zfs_release_one(zfs_handle_t *zhp, void *arg) 4426 { 4427 struct holdarg *ha = arg; 4428 char name[ZFS_MAXNAMELEN]; 4429 int rv = 0; 4430 nvlist_t *existing_holds; 4431 4432 (void) snprintf(name, sizeof (name), 4433 "%s@%s", zhp->zfs_name, ha->snapname); 4434 4435 if (lzc_get_holds(name, &existing_holds) != 0) { 4436 ha->error = ENOENT; 4437 } else if (!nvlist_exists(existing_holds, ha->tag)) { 4438 ha->error = ESRCH; 4439 } else { 4440 nvlist_t *torelease = fnvlist_alloc(); 4441 fnvlist_add_boolean(torelease, ha->tag); 4442 fnvlist_add_nvlist(ha->nvl, name, torelease); 4443 fnvlist_free(torelease); 4444 } 4445 4446 if (ha->recursive) 4447 rv = zfs_iter_filesystems(zhp, zfs_release_one, ha); 4448 zfs_close(zhp); 4449 return (rv); 4450 } 4451 4452 int 4453 zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag, 4454 boolean_t recursive) 4455 { 4456 int ret; 4457 struct holdarg ha; 4458 nvlist_t *errors = NULL; 4459 nvpair_t *elem; 4460 libzfs_handle_t *hdl = zhp->zfs_hdl; 4461 char errbuf[1024]; 4462 4463 ha.nvl = fnvlist_alloc(); 4464 ha.snapname = snapname; 4465 ha.tag = tag; 4466 ha.recursive = recursive; 4467 ha.error = 0; 4468 (void) zfs_release_one(zfs_handle_dup(zhp), &ha); 4469 4470 if (nvlist_empty(ha.nvl)) { 4471 fnvlist_free(ha.nvl); 4472 ret = ha.error; 4473 (void) snprintf(errbuf, sizeof (errbuf), 4474 dgettext(TEXT_DOMAIN, 4475 "cannot release hold from snapshot '%s@%s'"), 4476 zhp->zfs_name, snapname); 4477 if (ret == ESRCH) { 4478 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4479 } else { 4480 (void) zfs_standard_error(hdl, ret, errbuf); 4481 } 4482 return (ret); 4483 } 4484 4485 ret = lzc_release(ha.nvl, &errors); 4486 fnvlist_free(ha.nvl); 4487 4488 if (ret == 0) { 4489 /* There may be errors even in the success case. */ 4490 fnvlist_free(errors); 4491 return (0); 4492 } 4493 4494 if (nvlist_empty(errors)) { 4495 /* no hold-specific errors */ 4496 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4497 "cannot release")); 4498 switch (errno) { 4499 case ENOTSUP: 4500 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4501 "pool must be upgraded")); 4502 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4503 break; 4504 default: 4505 (void) zfs_standard_error_fmt(hdl, errno, errbuf); 4506 } 4507 } 4508 4509 for (elem = nvlist_next_nvpair(errors, NULL); 4510 elem != NULL; 4511 elem = nvlist_next_nvpair(errors, elem)) { 4512 (void) snprintf(errbuf, sizeof (errbuf), 4513 dgettext(TEXT_DOMAIN, 4514 "cannot release hold from snapshot '%s'"), 4515 nvpair_name(elem)); 4516 switch (fnvpair_value_int32(elem)) { 4517 case ESRCH: 4518 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4519 break; 4520 case EINVAL: 4521 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4522 break; 4523 default: 4524 (void) zfs_standard_error_fmt(hdl, 4525 fnvpair_value_int32(elem), errbuf); 4526 } 4527 } 4528 4529 fnvlist_free(errors); 4530 return (ret); 4531 } 4532 4533 int 4534 zfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl) 4535 { 4536 zfs_cmd_t zc = { 0 }; 4537 libzfs_handle_t *hdl = zhp->zfs_hdl; 4538 int nvsz = 2048; 4539 void *nvbuf; 4540 int err = 0; 4541 char errbuf[1024]; 4542 4543 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4544 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4545 4546 tryagain: 4547 4548 nvbuf = malloc(nvsz); 4549 if (nvbuf == NULL) { 4550 err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno))); 4551 goto out; 4552 } 4553 4554 zc.zc_nvlist_dst_size = nvsz; 4555 zc.zc_nvlist_dst = (uintptr_t)nvbuf; 4556 4557 (void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN); 4558 4559 if (ioctl(hdl->libzfs_fd, ZFS_IOC_GET_FSACL, &zc) != 0) { 4560 (void) snprintf(errbuf, sizeof (errbuf), 4561 dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"), 4562 zc.zc_name); 4563 switch (errno) { 4564 case ENOMEM: 4565 free(nvbuf); 4566 nvsz = zc.zc_nvlist_dst_size; 4567 goto tryagain; 4568 4569 case ENOTSUP: 4570 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4571 "pool must be upgraded")); 4572 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4573 break; 4574 case EINVAL: 4575 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4576 break; 4577 case ENOENT: 4578 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4579 break; 4580 default: 4581 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4582 break; 4583 } 4584 } else { 4585 /* success */ 4586 int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0); 4587 if (rc) { 4588 (void) snprintf(errbuf, sizeof (errbuf), dgettext( 4589 TEXT_DOMAIN, "cannot get permissions on '%s'"), 4590 zc.zc_name); 4591 err = zfs_standard_error_fmt(hdl, rc, errbuf); 4592 } 4593 } 4594 4595 free(nvbuf); 4596 out: 4597 return (err); 4598 } 4599 4600 int 4601 zfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl) 4602 { 4603 zfs_cmd_t zc = { 0 }; 4604 libzfs_handle_t *hdl = zhp->zfs_hdl; 4605 char *nvbuf; 4606 char errbuf[1024]; 4607 size_t nvsz; 4608 int err; 4609 4610 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4611 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4612 4613 err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE); 4614 assert(err == 0); 4615 4616 nvbuf = malloc(nvsz); 4617 4618 err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0); 4619 assert(err == 0); 4620 4621 zc.zc_nvlist_src_size = nvsz; 4622 zc.zc_nvlist_src = (uintptr_t)nvbuf; 4623 zc.zc_perm_action = un; 4624 4625 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4626 4627 if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) { 4628 (void) snprintf(errbuf, sizeof (errbuf), 4629 dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"), 4630 zc.zc_name); 4631 switch (errno) { 4632 case ENOTSUP: 4633 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4634 "pool must be upgraded")); 4635 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4636 break; 4637 case EINVAL: 4638 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4639 break; 4640 case ENOENT: 4641 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4642 break; 4643 default: 4644 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4645 break; 4646 } 4647 } 4648 4649 free(nvbuf); 4650 4651 return (err); 4652 } 4653 4654 int 4655 zfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl) 4656 { 4657 int err; 4658 char errbuf[1024]; 4659 4660 err = lzc_get_holds(zhp->zfs_name, nvl); 4661 4662 if (err != 0) { 4663 libzfs_handle_t *hdl = zhp->zfs_hdl; 4664 4665 (void) snprintf(errbuf, sizeof (errbuf), 4666 dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"), 4667 zhp->zfs_name); 4668 switch (err) { 4669 case ENOTSUP: 4670 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4671 "pool must be upgraded")); 4672 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4673 break; 4674 case EINVAL: 4675 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4676 break; 4677 case ENOENT: 4678 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4679 break; 4680 default: 4681 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4682 break; 4683 } 4684 } 4685 4686 return (err); 4687 } 4688 4689 /* 4690 * Convert the zvol's volume size to an appropriate reservation. 4691 * Note: If this routine is updated, it is necessary to update the ZFS test 4692 * suite's shell version in reservation.kshlib. 4693 */ 4694 uint64_t 4695 zvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props) 4696 { 4697 uint64_t numdb; 4698 uint64_t nblocks, volblocksize; 4699 int ncopies; 4700 char *strval; 4701 4702 if (nvlist_lookup_string(props, 4703 zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0) 4704 ncopies = atoi(strval); 4705 else 4706 ncopies = 1; 4707 if (nvlist_lookup_uint64(props, 4708 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 4709 &volblocksize) != 0) 4710 volblocksize = ZVOL_DEFAULT_BLOCKSIZE; 4711 nblocks = volsize/volblocksize; 4712 /* start with metadnode L0-L6 */ 4713 numdb = 7; 4714 /* calculate number of indirects */ 4715 while (nblocks > 1) { 4716 nblocks += DNODES_PER_LEVEL - 1; 4717 nblocks /= DNODES_PER_LEVEL; 4718 numdb += nblocks; 4719 } 4720 numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1); 4721 volsize *= ncopies; 4722 /* 4723 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't 4724 * compressed, but in practice they compress down to about 4725 * 1100 bytes 4726 */ 4727 numdb *= 1ULL << DN_MAX_INDBLKSHIFT; 4728 volsize += numdb; 4729 return (volsize); 4730 } 4731