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, 2016 by Delphix. All rights reserved. 26 * Copyright (c) 2012 DEY Storage Systems, Inc. All rights reserved. 27 * Copyright (c) 2011-2012 Pawel Jakub Dawidek. All rights reserved. 28 * Copyright (c) 2013 Martin Matuska. All rights reserved. 29 * Copyright (c) 2013 Steven Hartland. All rights reserved. 30 * Copyright (c) 2014 Integros [integros.com] 31 * Copyright 2016 Nexenta Systems, Inc. 32 * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com> 33 */ 34 35 #include <ctype.h> 36 #include <errno.h> 37 #include <libintl.h> 38 #include <math.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <strings.h> 42 #include <unistd.h> 43 #include <stddef.h> 44 #include <zone.h> 45 #include <fcntl.h> 46 #include <sys/mntent.h> 47 #include <sys/mount.h> 48 #include <priv.h> 49 #include <pwd.h> 50 #include <grp.h> 51 #include <stddef.h> 52 #include <ucred.h> 53 #include <idmap.h> 54 #include <aclutils.h> 55 #include <directory.h> 56 57 #include <sys/dnode.h> 58 #include <sys/spa.h> 59 #include <sys/zap.h> 60 #include <libzfs.h> 61 62 #include "zfs_namecheck.h" 63 #include "zfs_prop.h" 64 #include "libzfs_impl.h" 65 #include "zfs_deleg.h" 66 67 static int userquota_propname_decode(const char *propname, boolean_t zoned, 68 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp); 69 70 /* 71 * Given a single type (not a mask of types), return the type in a human 72 * readable form. 73 */ 74 const char * 75 zfs_type_to_name(zfs_type_t type) 76 { 77 switch (type) { 78 case ZFS_TYPE_FILESYSTEM: 79 return (dgettext(TEXT_DOMAIN, "filesystem")); 80 case ZFS_TYPE_SNAPSHOT: 81 return (dgettext(TEXT_DOMAIN, "snapshot")); 82 case ZFS_TYPE_VOLUME: 83 return (dgettext(TEXT_DOMAIN, "volume")); 84 case ZFS_TYPE_POOL: 85 return (dgettext(TEXT_DOMAIN, "pool")); 86 case ZFS_TYPE_BOOKMARK: 87 return (dgettext(TEXT_DOMAIN, "bookmark")); 88 default: 89 assert(!"unhandled zfs_type_t"); 90 } 91 92 return (NULL); 93 } 94 95 /* 96 * Validate a ZFS path. This is used even before trying to open the dataset, to 97 * provide a more meaningful error message. We call zfs_error_aux() to 98 * explain exactly why the name was not valid. 99 */ 100 int 101 zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, 102 boolean_t modifying) 103 { 104 namecheck_err_t why; 105 char what; 106 107 (void) zfs_prop_get_table(); 108 if (dataset_namecheck(path, &why, &what) != 0) { 109 if (hdl != NULL) { 110 switch (why) { 111 case NAME_ERR_TOOLONG: 112 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 113 "name is too long")); 114 break; 115 116 case NAME_ERR_LEADING_SLASH: 117 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 118 "leading slash in name")); 119 break; 120 121 case NAME_ERR_EMPTY_COMPONENT: 122 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 123 "empty component in name")); 124 break; 125 126 case NAME_ERR_TRAILING_SLASH: 127 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 128 "trailing slash in name")); 129 break; 130 131 case NAME_ERR_INVALCHAR: 132 zfs_error_aux(hdl, 133 dgettext(TEXT_DOMAIN, "invalid character " 134 "'%c' in name"), what); 135 break; 136 137 case NAME_ERR_MULTIPLE_AT: 138 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 139 "multiple '@' delimiters in name")); 140 break; 141 142 case NAME_ERR_NOLETTER: 143 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 144 "pool doesn't begin with a letter")); 145 break; 146 147 case NAME_ERR_RESERVED: 148 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 149 "name is reserved")); 150 break; 151 152 case NAME_ERR_DISKLIKE: 153 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 154 "reserved disk name")); 155 break; 156 157 default: 158 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 159 "(%d) not defined"), why); 160 break; 161 } 162 } 163 164 return (0); 165 } 166 167 if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) { 168 if (hdl != NULL) 169 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 170 "snapshot delimiter '@' in filesystem name")); 171 return (0); 172 } 173 174 if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) { 175 if (hdl != NULL) 176 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 177 "missing '@' delimiter in snapshot name")); 178 return (0); 179 } 180 181 if (modifying && strchr(path, '%') != NULL) { 182 if (hdl != NULL) 183 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 184 "invalid character %c in name"), '%'); 185 return (0); 186 } 187 188 return (-1); 189 } 190 191 int 192 zfs_name_valid(const char *name, zfs_type_t type) 193 { 194 if (type == ZFS_TYPE_POOL) 195 return (zpool_name_valid(NULL, B_FALSE, name)); 196 return (zfs_validate_name(NULL, name, type, B_FALSE)); 197 } 198 199 /* 200 * This function takes the raw DSL properties, and filters out the user-defined 201 * properties into a separate nvlist. 202 */ 203 static nvlist_t * 204 process_user_props(zfs_handle_t *zhp, nvlist_t *props) 205 { 206 libzfs_handle_t *hdl = zhp->zfs_hdl; 207 nvpair_t *elem; 208 nvlist_t *propval; 209 nvlist_t *nvl; 210 211 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) { 212 (void) no_memory(hdl); 213 return (NULL); 214 } 215 216 elem = NULL; 217 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { 218 if (!zfs_prop_user(nvpair_name(elem))) 219 continue; 220 221 verify(nvpair_value_nvlist(elem, &propval) == 0); 222 if (nvlist_add_nvlist(nvl, nvpair_name(elem), propval) != 0) { 223 nvlist_free(nvl); 224 (void) no_memory(hdl); 225 return (NULL); 226 } 227 } 228 229 return (nvl); 230 } 231 232 static zpool_handle_t * 233 zpool_add_handle(zfs_handle_t *zhp, const char *pool_name) 234 { 235 libzfs_handle_t *hdl = zhp->zfs_hdl; 236 zpool_handle_t *zph; 237 238 if ((zph = zpool_open_canfail(hdl, pool_name)) != NULL) { 239 if (hdl->libzfs_pool_handles != NULL) 240 zph->zpool_next = hdl->libzfs_pool_handles; 241 hdl->libzfs_pool_handles = zph; 242 } 243 return (zph); 244 } 245 246 static zpool_handle_t * 247 zpool_find_handle(zfs_handle_t *zhp, const char *pool_name, int len) 248 { 249 libzfs_handle_t *hdl = zhp->zfs_hdl; 250 zpool_handle_t *zph = hdl->libzfs_pool_handles; 251 252 while ((zph != NULL) && 253 (strncmp(pool_name, zpool_get_name(zph), len) != 0)) 254 zph = zph->zpool_next; 255 return (zph); 256 } 257 258 /* 259 * Returns a handle to the pool that contains the provided dataset. 260 * If a handle to that pool already exists then that handle is returned. 261 * Otherwise, a new handle is created and added to the list of handles. 262 */ 263 static zpool_handle_t * 264 zpool_handle(zfs_handle_t *zhp) 265 { 266 char *pool_name; 267 int len; 268 zpool_handle_t *zph; 269 270 len = strcspn(zhp->zfs_name, "/@#") + 1; 271 pool_name = zfs_alloc(zhp->zfs_hdl, len); 272 (void) strlcpy(pool_name, zhp->zfs_name, len); 273 274 zph = zpool_find_handle(zhp, pool_name, len); 275 if (zph == NULL) 276 zph = zpool_add_handle(zhp, pool_name); 277 278 free(pool_name); 279 return (zph); 280 } 281 282 void 283 zpool_free_handles(libzfs_handle_t *hdl) 284 { 285 zpool_handle_t *next, *zph = hdl->libzfs_pool_handles; 286 287 while (zph != NULL) { 288 next = zph->zpool_next; 289 zpool_close(zph); 290 zph = next; 291 } 292 hdl->libzfs_pool_handles = NULL; 293 } 294 295 /* 296 * Utility function to gather stats (objset and zpl) for the given object. 297 */ 298 static int 299 get_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc) 300 { 301 libzfs_handle_t *hdl = zhp->zfs_hdl; 302 303 (void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name)); 304 305 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, zc) != 0) { 306 if (errno == ENOMEM) { 307 if (zcmd_expand_dst_nvlist(hdl, zc) != 0) { 308 return (-1); 309 } 310 } else { 311 return (-1); 312 } 313 } 314 return (0); 315 } 316 317 /* 318 * Utility function to get the received properties of the given object. 319 */ 320 static int 321 get_recvd_props_ioctl(zfs_handle_t *zhp) 322 { 323 libzfs_handle_t *hdl = zhp->zfs_hdl; 324 nvlist_t *recvdprops; 325 zfs_cmd_t zc = { 0 }; 326 int err; 327 328 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) 329 return (-1); 330 331 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 332 333 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) { 334 if (errno == ENOMEM) { 335 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 336 return (-1); 337 } 338 } else { 339 zcmd_free_nvlists(&zc); 340 return (-1); 341 } 342 } 343 344 err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops); 345 zcmd_free_nvlists(&zc); 346 if (err != 0) 347 return (-1); 348 349 nvlist_free(zhp->zfs_recvd_props); 350 zhp->zfs_recvd_props = recvdprops; 351 352 return (0); 353 } 354 355 static int 356 put_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc) 357 { 358 nvlist_t *allprops, *userprops; 359 360 zhp->zfs_dmustats = zc->zc_objset_stats; /* structure assignment */ 361 362 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, zc, &allprops) != 0) { 363 return (-1); 364 } 365 366 /* 367 * XXX Why do we store the user props separately, in addition to 368 * storing them in zfs_props? 369 */ 370 if ((userprops = process_user_props(zhp, allprops)) == NULL) { 371 nvlist_free(allprops); 372 return (-1); 373 } 374 375 nvlist_free(zhp->zfs_props); 376 nvlist_free(zhp->zfs_user_props); 377 378 zhp->zfs_props = allprops; 379 zhp->zfs_user_props = userprops; 380 381 return (0); 382 } 383 384 static int 385 get_stats(zfs_handle_t *zhp) 386 { 387 int rc = 0; 388 zfs_cmd_t zc = { 0 }; 389 390 if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 391 return (-1); 392 if (get_stats_ioctl(zhp, &zc) != 0) 393 rc = -1; 394 else if (put_stats_zhdl(zhp, &zc) != 0) 395 rc = -1; 396 zcmd_free_nvlists(&zc); 397 return (rc); 398 } 399 400 /* 401 * Refresh the properties currently stored in the handle. 402 */ 403 void 404 zfs_refresh_properties(zfs_handle_t *zhp) 405 { 406 (void) get_stats(zhp); 407 } 408 409 /* 410 * Makes a handle from the given dataset name. Used by zfs_open() and 411 * zfs_iter_* to create child handles on the fly. 412 */ 413 static int 414 make_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc) 415 { 416 if (put_stats_zhdl(zhp, zc) != 0) 417 return (-1); 418 419 /* 420 * We've managed to open the dataset and gather statistics. Determine 421 * the high-level type. 422 */ 423 if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 424 zhp->zfs_head_type = ZFS_TYPE_VOLUME; 425 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 426 zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM; 427 else 428 abort(); 429 430 if (zhp->zfs_dmustats.dds_is_snapshot) 431 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 432 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) 433 zhp->zfs_type = ZFS_TYPE_VOLUME; 434 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) 435 zhp->zfs_type = ZFS_TYPE_FILESYSTEM; 436 else 437 abort(); /* we should never see any other types */ 438 439 if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) 440 return (-1); 441 442 return (0); 443 } 444 445 zfs_handle_t * 446 make_dataset_handle(libzfs_handle_t *hdl, const char *path) 447 { 448 zfs_cmd_t zc = { 0 }; 449 450 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 451 452 if (zhp == NULL) 453 return (NULL); 454 455 zhp->zfs_hdl = hdl; 456 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 457 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) { 458 free(zhp); 459 return (NULL); 460 } 461 if (get_stats_ioctl(zhp, &zc) == -1) { 462 zcmd_free_nvlists(&zc); 463 free(zhp); 464 return (NULL); 465 } 466 if (make_dataset_handle_common(zhp, &zc) == -1) { 467 free(zhp); 468 zhp = NULL; 469 } 470 zcmd_free_nvlists(&zc); 471 return (zhp); 472 } 473 474 zfs_handle_t * 475 make_dataset_handle_zc(libzfs_handle_t *hdl, zfs_cmd_t *zc) 476 { 477 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 478 479 if (zhp == NULL) 480 return (NULL); 481 482 zhp->zfs_hdl = hdl; 483 (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); 484 if (make_dataset_handle_common(zhp, zc) == -1) { 485 free(zhp); 486 return (NULL); 487 } 488 return (zhp); 489 } 490 491 zfs_handle_t * 492 make_dataset_simple_handle_zc(zfs_handle_t *pzhp, zfs_cmd_t *zc) 493 { 494 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 495 496 if (zhp == NULL) 497 return (NULL); 498 499 zhp->zfs_hdl = pzhp->zfs_hdl; 500 (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); 501 zhp->zfs_head_type = pzhp->zfs_type; 502 zhp->zfs_type = ZFS_TYPE_SNAPSHOT; 503 zhp->zpool_hdl = zpool_handle(zhp); 504 return (zhp); 505 } 506 507 zfs_handle_t * 508 zfs_handle_dup(zfs_handle_t *zhp_orig) 509 { 510 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 511 512 if (zhp == NULL) 513 return (NULL); 514 515 zhp->zfs_hdl = zhp_orig->zfs_hdl; 516 zhp->zpool_hdl = zhp_orig->zpool_hdl; 517 (void) strlcpy(zhp->zfs_name, zhp_orig->zfs_name, 518 sizeof (zhp->zfs_name)); 519 zhp->zfs_type = zhp_orig->zfs_type; 520 zhp->zfs_head_type = zhp_orig->zfs_head_type; 521 zhp->zfs_dmustats = zhp_orig->zfs_dmustats; 522 if (zhp_orig->zfs_props != NULL) { 523 if (nvlist_dup(zhp_orig->zfs_props, &zhp->zfs_props, 0) != 0) { 524 (void) no_memory(zhp->zfs_hdl); 525 zfs_close(zhp); 526 return (NULL); 527 } 528 } 529 if (zhp_orig->zfs_user_props != NULL) { 530 if (nvlist_dup(zhp_orig->zfs_user_props, 531 &zhp->zfs_user_props, 0) != 0) { 532 (void) no_memory(zhp->zfs_hdl); 533 zfs_close(zhp); 534 return (NULL); 535 } 536 } 537 if (zhp_orig->zfs_recvd_props != NULL) { 538 if (nvlist_dup(zhp_orig->zfs_recvd_props, 539 &zhp->zfs_recvd_props, 0)) { 540 (void) no_memory(zhp->zfs_hdl); 541 zfs_close(zhp); 542 return (NULL); 543 } 544 } 545 zhp->zfs_mntcheck = zhp_orig->zfs_mntcheck; 546 if (zhp_orig->zfs_mntopts != NULL) { 547 zhp->zfs_mntopts = zfs_strdup(zhp_orig->zfs_hdl, 548 zhp_orig->zfs_mntopts); 549 } 550 zhp->zfs_props_table = zhp_orig->zfs_props_table; 551 return (zhp); 552 } 553 554 boolean_t 555 zfs_bookmark_exists(const char *path) 556 { 557 nvlist_t *bmarks; 558 nvlist_t *props; 559 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 560 char *bmark_name; 561 char *pound; 562 int err; 563 boolean_t rv; 564 565 566 (void) strlcpy(fsname, path, sizeof (fsname)); 567 pound = strchr(fsname, '#'); 568 if (pound == NULL) 569 return (B_FALSE); 570 571 *pound = '\0'; 572 bmark_name = pound + 1; 573 props = fnvlist_alloc(); 574 err = lzc_get_bookmarks(fsname, props, &bmarks); 575 nvlist_free(props); 576 if (err != 0) { 577 nvlist_free(bmarks); 578 return (B_FALSE); 579 } 580 581 rv = nvlist_exists(bmarks, bmark_name); 582 nvlist_free(bmarks); 583 return (rv); 584 } 585 586 zfs_handle_t * 587 make_bookmark_handle(zfs_handle_t *parent, const char *path, 588 nvlist_t *bmark_props) 589 { 590 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); 591 592 if (zhp == NULL) 593 return (NULL); 594 595 /* Fill in the name. */ 596 zhp->zfs_hdl = parent->zfs_hdl; 597 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); 598 599 /* Set the property lists. */ 600 if (nvlist_dup(bmark_props, &zhp->zfs_props, 0) != 0) { 601 free(zhp); 602 return (NULL); 603 } 604 605 /* Set the types. */ 606 zhp->zfs_head_type = parent->zfs_head_type; 607 zhp->zfs_type = ZFS_TYPE_BOOKMARK; 608 609 if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) { 610 nvlist_free(zhp->zfs_props); 611 free(zhp); 612 return (NULL); 613 } 614 615 return (zhp); 616 } 617 618 /* 619 * Opens the given snapshot, filesystem, or volume. The 'types' 620 * argument is a mask of acceptable types. The function will print an 621 * appropriate error message and return NULL if it can't be opened. 622 */ 623 zfs_handle_t * 624 zfs_open(libzfs_handle_t *hdl, const char *path, int types) 625 { 626 zfs_handle_t *zhp; 627 char errbuf[1024]; 628 629 (void) snprintf(errbuf, sizeof (errbuf), 630 dgettext(TEXT_DOMAIN, "cannot open '%s'"), path); 631 632 /* 633 * Validate the name before we even try to open it. 634 */ 635 if (!zfs_validate_name(hdl, path, ZFS_TYPE_DATASET, B_FALSE)) { 636 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 637 "invalid dataset name")); 638 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 639 return (NULL); 640 } 641 642 /* 643 * Try to get stats for the dataset, which will tell us if it exists. 644 */ 645 errno = 0; 646 if ((zhp = make_dataset_handle(hdl, path)) == NULL) { 647 (void) zfs_standard_error(hdl, errno, errbuf); 648 return (NULL); 649 } 650 651 if (!(types & zhp->zfs_type)) { 652 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 653 zfs_close(zhp); 654 return (NULL); 655 } 656 657 return (zhp); 658 } 659 660 /* 661 * Release a ZFS handle. Nothing to do but free the associated memory. 662 */ 663 void 664 zfs_close(zfs_handle_t *zhp) 665 { 666 if (zhp->zfs_mntopts) 667 free(zhp->zfs_mntopts); 668 nvlist_free(zhp->zfs_props); 669 nvlist_free(zhp->zfs_user_props); 670 nvlist_free(zhp->zfs_recvd_props); 671 free(zhp); 672 } 673 674 typedef struct mnttab_node { 675 struct mnttab mtn_mt; 676 avl_node_t mtn_node; 677 } mnttab_node_t; 678 679 static int 680 libzfs_mnttab_cache_compare(const void *arg1, const void *arg2) 681 { 682 const mnttab_node_t *mtn1 = arg1; 683 const mnttab_node_t *mtn2 = arg2; 684 int rv; 685 686 rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special); 687 688 if (rv == 0) 689 return (0); 690 return (rv > 0 ? 1 : -1); 691 } 692 693 void 694 libzfs_mnttab_init(libzfs_handle_t *hdl) 695 { 696 assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0); 697 avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare, 698 sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node)); 699 } 700 701 void 702 libzfs_mnttab_update(libzfs_handle_t *hdl) 703 { 704 struct mnttab entry; 705 706 rewind(hdl->libzfs_mnttab); 707 while (getmntent(hdl->libzfs_mnttab, &entry) == 0) { 708 mnttab_node_t *mtn; 709 710 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 711 continue; 712 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); 713 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, entry.mnt_special); 714 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, entry.mnt_mountp); 715 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, entry.mnt_fstype); 716 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, entry.mnt_mntopts); 717 avl_add(&hdl->libzfs_mnttab_cache, mtn); 718 } 719 } 720 721 void 722 libzfs_mnttab_fini(libzfs_handle_t *hdl) 723 { 724 void *cookie = NULL; 725 mnttab_node_t *mtn; 726 727 while ((mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie)) 728 != NULL) { 729 free(mtn->mtn_mt.mnt_special); 730 free(mtn->mtn_mt.mnt_mountp); 731 free(mtn->mtn_mt.mnt_fstype); 732 free(mtn->mtn_mt.mnt_mntopts); 733 free(mtn); 734 } 735 avl_destroy(&hdl->libzfs_mnttab_cache); 736 } 737 738 void 739 libzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable) 740 { 741 hdl->libzfs_mnttab_enable = enable; 742 } 743 744 int 745 libzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname, 746 struct mnttab *entry) 747 { 748 mnttab_node_t find; 749 mnttab_node_t *mtn; 750 751 if (!hdl->libzfs_mnttab_enable) { 752 struct mnttab srch = { 0 }; 753 754 if (avl_numnodes(&hdl->libzfs_mnttab_cache)) 755 libzfs_mnttab_fini(hdl); 756 rewind(hdl->libzfs_mnttab); 757 srch.mnt_special = (char *)fsname; 758 srch.mnt_fstype = MNTTYPE_ZFS; 759 if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0) 760 return (0); 761 else 762 return (ENOENT); 763 } 764 765 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) 766 libzfs_mnttab_update(hdl); 767 768 find.mtn_mt.mnt_special = (char *)fsname; 769 mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL); 770 if (mtn) { 771 *entry = mtn->mtn_mt; 772 return (0); 773 } 774 return (ENOENT); 775 } 776 777 void 778 libzfs_mnttab_add(libzfs_handle_t *hdl, const char *special, 779 const char *mountp, const char *mntopts) 780 { 781 mnttab_node_t *mtn; 782 783 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) 784 return; 785 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); 786 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special); 787 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp); 788 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS); 789 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts); 790 avl_add(&hdl->libzfs_mnttab_cache, mtn); 791 } 792 793 void 794 libzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname) 795 { 796 mnttab_node_t find; 797 mnttab_node_t *ret; 798 799 find.mtn_mt.mnt_special = (char *)fsname; 800 if ((ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL)) 801 != NULL) { 802 avl_remove(&hdl->libzfs_mnttab_cache, ret); 803 free(ret->mtn_mt.mnt_special); 804 free(ret->mtn_mt.mnt_mountp); 805 free(ret->mtn_mt.mnt_fstype); 806 free(ret->mtn_mt.mnt_mntopts); 807 free(ret); 808 } 809 } 810 811 int 812 zfs_spa_version(zfs_handle_t *zhp, int *spa_version) 813 { 814 zpool_handle_t *zpool_handle = zhp->zpool_hdl; 815 816 if (zpool_handle == NULL) 817 return (-1); 818 819 *spa_version = zpool_get_prop_int(zpool_handle, 820 ZPOOL_PROP_VERSION, NULL); 821 return (0); 822 } 823 824 /* 825 * The choice of reservation property depends on the SPA version. 826 */ 827 static int 828 zfs_which_resv_prop(zfs_handle_t *zhp, zfs_prop_t *resv_prop) 829 { 830 int spa_version; 831 832 if (zfs_spa_version(zhp, &spa_version) < 0) 833 return (-1); 834 835 if (spa_version >= SPA_VERSION_REFRESERVATION) 836 *resv_prop = ZFS_PROP_REFRESERVATION; 837 else 838 *resv_prop = ZFS_PROP_RESERVATION; 839 840 return (0); 841 } 842 843 /* 844 * Given an nvlist of properties to set, validates that they are correct, and 845 * parses any numeric properties (index, boolean, etc) if they are specified as 846 * strings. 847 */ 848 nvlist_t * 849 zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, 850 uint64_t zoned, zfs_handle_t *zhp, zpool_handle_t *zpool_hdl, 851 const char *errbuf) 852 { 853 nvpair_t *elem; 854 uint64_t intval; 855 char *strval; 856 zfs_prop_t prop; 857 nvlist_t *ret; 858 int chosen_normal = -1; 859 int chosen_utf = -1; 860 861 if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) { 862 (void) no_memory(hdl); 863 return (NULL); 864 } 865 866 /* 867 * Make sure this property is valid and applies to this type. 868 */ 869 870 elem = NULL; 871 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { 872 const char *propname = nvpair_name(elem); 873 874 prop = zfs_name_to_prop(propname); 875 if (prop == ZPROP_INVAL && zfs_prop_user(propname)) { 876 /* 877 * This is a user property: make sure it's a 878 * string, and that it's less than ZAP_MAXNAMELEN. 879 */ 880 if (nvpair_type(elem) != DATA_TYPE_STRING) { 881 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 882 "'%s' must be a string"), propname); 883 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 884 goto error; 885 } 886 887 if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) { 888 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 889 "property name '%s' is too long"), 890 propname); 891 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 892 goto error; 893 } 894 895 (void) nvpair_value_string(elem, &strval); 896 if (nvlist_add_string(ret, propname, strval) != 0) { 897 (void) no_memory(hdl); 898 goto error; 899 } 900 continue; 901 } 902 903 /* 904 * Currently, only user properties can be modified on 905 * snapshots. 906 */ 907 if (type == ZFS_TYPE_SNAPSHOT) { 908 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 909 "this property can not be modified for snapshots")); 910 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 911 goto error; 912 } 913 914 if (prop == ZPROP_INVAL && zfs_prop_userquota(propname)) { 915 zfs_userquota_prop_t uqtype; 916 char newpropname[128]; 917 char domain[128]; 918 uint64_t rid; 919 uint64_t valary[3]; 920 921 if (userquota_propname_decode(propname, zoned, 922 &uqtype, domain, sizeof (domain), &rid) != 0) { 923 zfs_error_aux(hdl, 924 dgettext(TEXT_DOMAIN, 925 "'%s' has an invalid user/group name"), 926 propname); 927 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 928 goto error; 929 } 930 931 if (uqtype != ZFS_PROP_USERQUOTA && 932 uqtype != ZFS_PROP_GROUPQUOTA) { 933 zfs_error_aux(hdl, 934 dgettext(TEXT_DOMAIN, "'%s' is readonly"), 935 propname); 936 (void) zfs_error(hdl, EZFS_PROPREADONLY, 937 errbuf); 938 goto error; 939 } 940 941 if (nvpair_type(elem) == DATA_TYPE_STRING) { 942 (void) nvpair_value_string(elem, &strval); 943 if (strcmp(strval, "none") == 0) { 944 intval = 0; 945 } else if (zfs_nicestrtonum(hdl, 946 strval, &intval) != 0) { 947 (void) zfs_error(hdl, 948 EZFS_BADPROP, errbuf); 949 goto error; 950 } 951 } else if (nvpair_type(elem) == 952 DATA_TYPE_UINT64) { 953 (void) nvpair_value_uint64(elem, &intval); 954 if (intval == 0) { 955 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 956 "use 'none' to disable " 957 "userquota/groupquota")); 958 goto error; 959 } 960 } else { 961 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 962 "'%s' must be a number"), propname); 963 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 964 goto error; 965 } 966 967 /* 968 * Encode the prop name as 969 * userquota@<hex-rid>-domain, to make it easy 970 * for the kernel to decode. 971 */ 972 (void) snprintf(newpropname, sizeof (newpropname), 973 "%s%llx-%s", zfs_userquota_prop_prefixes[uqtype], 974 (longlong_t)rid, domain); 975 valary[0] = uqtype; 976 valary[1] = rid; 977 valary[2] = intval; 978 if (nvlist_add_uint64_array(ret, newpropname, 979 valary, 3) != 0) { 980 (void) no_memory(hdl); 981 goto error; 982 } 983 continue; 984 } else if (prop == ZPROP_INVAL && zfs_prop_written(propname)) { 985 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 986 "'%s' is readonly"), 987 propname); 988 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 989 goto error; 990 } 991 992 if (prop == ZPROP_INVAL) { 993 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 994 "invalid property '%s'"), propname); 995 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 996 goto error; 997 } 998 999 if (!zfs_prop_valid_for_type(prop, type)) { 1000 zfs_error_aux(hdl, 1001 dgettext(TEXT_DOMAIN, "'%s' does not " 1002 "apply to datasets of this type"), propname); 1003 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); 1004 goto error; 1005 } 1006 1007 if (zfs_prop_readonly(prop) && 1008 (!zfs_prop_setonce(prop) || zhp != NULL)) { 1009 zfs_error_aux(hdl, 1010 dgettext(TEXT_DOMAIN, "'%s' is readonly"), 1011 propname); 1012 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 1013 goto error; 1014 } 1015 1016 if (zprop_parse_value(hdl, elem, prop, type, ret, 1017 &strval, &intval, errbuf) != 0) 1018 goto error; 1019 1020 /* 1021 * Perform some additional checks for specific properties. 1022 */ 1023 switch (prop) { 1024 case ZFS_PROP_VERSION: 1025 { 1026 int version; 1027 1028 if (zhp == NULL) 1029 break; 1030 version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1031 if (intval < version) { 1032 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1033 "Can not downgrade; already at version %u"), 1034 version); 1035 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1036 goto error; 1037 } 1038 break; 1039 } 1040 1041 case ZFS_PROP_VOLBLOCKSIZE: 1042 case ZFS_PROP_RECORDSIZE: 1043 { 1044 int maxbs = SPA_MAXBLOCKSIZE; 1045 if (zpool_hdl != NULL) { 1046 maxbs = zpool_get_prop_int(zpool_hdl, 1047 ZPOOL_PROP_MAXBLOCKSIZE, NULL); 1048 } 1049 /* 1050 * Volumes are limited to a volblocksize of 128KB, 1051 * because they typically service workloads with 1052 * small random writes, which incur a large performance 1053 * penalty with large blocks. 1054 */ 1055 if (prop == ZFS_PROP_VOLBLOCKSIZE) 1056 maxbs = SPA_OLD_MAXBLOCKSIZE; 1057 /* 1058 * The value must be a power of two between 1059 * SPA_MINBLOCKSIZE and maxbs. 1060 */ 1061 if (intval < SPA_MINBLOCKSIZE || 1062 intval > maxbs || !ISP2(intval)) { 1063 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1064 "'%s' must be power of 2 from 512B " 1065 "to %uKB"), propname, maxbs >> 10); 1066 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1067 goto error; 1068 } 1069 break; 1070 } 1071 case ZFS_PROP_MLSLABEL: 1072 { 1073 /* 1074 * Verify the mlslabel string and convert to 1075 * internal hex label string. 1076 */ 1077 1078 m_label_t *new_sl; 1079 char *hex = NULL; /* internal label string */ 1080 1081 /* Default value is already OK. */ 1082 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) 1083 break; 1084 1085 /* Verify the label can be converted to binary form */ 1086 if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) || 1087 (str_to_label(strval, &new_sl, MAC_LABEL, 1088 L_NO_CORRECTION, NULL) == -1)) { 1089 goto badlabel; 1090 } 1091 1092 /* Now translate to hex internal label string */ 1093 if (label_to_str(new_sl, &hex, M_INTERNAL, 1094 DEF_NAMES) != 0) { 1095 if (hex) 1096 free(hex); 1097 goto badlabel; 1098 } 1099 m_label_free(new_sl); 1100 1101 /* If string is already in internal form, we're done. */ 1102 if (strcmp(strval, hex) == 0) { 1103 free(hex); 1104 break; 1105 } 1106 1107 /* Replace the label string with the internal form. */ 1108 (void) nvlist_remove(ret, zfs_prop_to_name(prop), 1109 DATA_TYPE_STRING); 1110 verify(nvlist_add_string(ret, zfs_prop_to_name(prop), 1111 hex) == 0); 1112 free(hex); 1113 1114 break; 1115 1116 badlabel: 1117 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1118 "invalid mlslabel '%s'"), strval); 1119 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1120 m_label_free(new_sl); /* OK if null */ 1121 goto error; 1122 1123 } 1124 1125 case ZFS_PROP_MOUNTPOINT: 1126 { 1127 namecheck_err_t why; 1128 1129 if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 || 1130 strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0) 1131 break; 1132 1133 if (mountpoint_namecheck(strval, &why)) { 1134 switch (why) { 1135 case NAME_ERR_LEADING_SLASH: 1136 zfs_error_aux(hdl, 1137 dgettext(TEXT_DOMAIN, 1138 "'%s' must be an absolute path, " 1139 "'none', or 'legacy'"), propname); 1140 break; 1141 case NAME_ERR_TOOLONG: 1142 zfs_error_aux(hdl, 1143 dgettext(TEXT_DOMAIN, 1144 "component of '%s' is too long"), 1145 propname); 1146 break; 1147 1148 default: 1149 zfs_error_aux(hdl, 1150 dgettext(TEXT_DOMAIN, 1151 "(%d) not defined"), 1152 why); 1153 break; 1154 } 1155 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1156 goto error; 1157 } 1158 } 1159 1160 /*FALLTHRU*/ 1161 1162 case ZFS_PROP_SHARESMB: 1163 case ZFS_PROP_SHARENFS: 1164 /* 1165 * For the mountpoint and sharenfs or sharesmb 1166 * properties, check if it can be set in a 1167 * global/non-global zone based on 1168 * the zoned property value: 1169 * 1170 * global zone non-global zone 1171 * -------------------------------------------------- 1172 * zoned=on mountpoint (no) mountpoint (yes) 1173 * sharenfs (no) sharenfs (no) 1174 * sharesmb (no) sharesmb (no) 1175 * 1176 * zoned=off mountpoint (yes) N/A 1177 * sharenfs (yes) 1178 * sharesmb (yes) 1179 */ 1180 if (zoned) { 1181 if (getzoneid() == GLOBAL_ZONEID) { 1182 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1183 "'%s' cannot be set on " 1184 "dataset in a non-global zone"), 1185 propname); 1186 (void) zfs_error(hdl, EZFS_ZONED, 1187 errbuf); 1188 goto error; 1189 } else if (prop == ZFS_PROP_SHARENFS || 1190 prop == ZFS_PROP_SHARESMB) { 1191 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1192 "'%s' cannot be set in " 1193 "a non-global zone"), propname); 1194 (void) zfs_error(hdl, EZFS_ZONED, 1195 errbuf); 1196 goto error; 1197 } 1198 } else if (getzoneid() != GLOBAL_ZONEID) { 1199 /* 1200 * If zoned property is 'off', this must be in 1201 * a global zone. If not, something is wrong. 1202 */ 1203 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1204 "'%s' cannot be set while dataset " 1205 "'zoned' property is set"), propname); 1206 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 1207 goto error; 1208 } 1209 1210 /* 1211 * At this point, it is legitimate to set the 1212 * property. Now we want to make sure that the 1213 * property value is valid if it is sharenfs. 1214 */ 1215 if ((prop == ZFS_PROP_SHARENFS || 1216 prop == ZFS_PROP_SHARESMB) && 1217 strcmp(strval, "on") != 0 && 1218 strcmp(strval, "off") != 0) { 1219 zfs_share_proto_t proto; 1220 1221 if (prop == ZFS_PROP_SHARESMB) 1222 proto = PROTO_SMB; 1223 else 1224 proto = PROTO_NFS; 1225 1226 /* 1227 * Must be an valid sharing protocol 1228 * option string so init the libshare 1229 * in order to enable the parser and 1230 * then parse the options. We use the 1231 * control API since we don't care about 1232 * the current configuration and don't 1233 * want the overhead of loading it 1234 * until we actually do something. 1235 */ 1236 1237 if (zfs_init_libshare(hdl, 1238 SA_INIT_CONTROL_API) != SA_OK) { 1239 /* 1240 * An error occurred so we can't do 1241 * anything 1242 */ 1243 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1244 "'%s' cannot be set: problem " 1245 "in share initialization"), 1246 propname); 1247 (void) zfs_error(hdl, EZFS_BADPROP, 1248 errbuf); 1249 goto error; 1250 } 1251 1252 if (zfs_parse_options(strval, proto) != SA_OK) { 1253 /* 1254 * There was an error in parsing so 1255 * deal with it by issuing an error 1256 * message and leaving after 1257 * uninitializing the the libshare 1258 * interface. 1259 */ 1260 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1261 "'%s' cannot be set to invalid " 1262 "options"), propname); 1263 (void) zfs_error(hdl, EZFS_BADPROP, 1264 errbuf); 1265 zfs_uninit_libshare(hdl); 1266 goto error; 1267 } 1268 zfs_uninit_libshare(hdl); 1269 } 1270 1271 break; 1272 1273 case ZFS_PROP_UTF8ONLY: 1274 chosen_utf = (int)intval; 1275 break; 1276 1277 case ZFS_PROP_NORMALIZE: 1278 chosen_normal = (int)intval; 1279 break; 1280 1281 default: 1282 break; 1283 } 1284 1285 /* 1286 * For changes to existing volumes, we have some additional 1287 * checks to enforce. 1288 */ 1289 if (type == ZFS_TYPE_VOLUME && zhp != NULL) { 1290 uint64_t volsize = zfs_prop_get_int(zhp, 1291 ZFS_PROP_VOLSIZE); 1292 uint64_t blocksize = zfs_prop_get_int(zhp, 1293 ZFS_PROP_VOLBLOCKSIZE); 1294 char buf[64]; 1295 1296 switch (prop) { 1297 case ZFS_PROP_RESERVATION: 1298 case ZFS_PROP_REFRESERVATION: 1299 if (intval > volsize) { 1300 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1301 "'%s' is greater than current " 1302 "volume size"), propname); 1303 (void) zfs_error(hdl, EZFS_BADPROP, 1304 errbuf); 1305 goto error; 1306 } 1307 break; 1308 1309 case ZFS_PROP_VOLSIZE: 1310 if (intval % blocksize != 0) { 1311 zfs_nicenum(blocksize, buf, 1312 sizeof (buf)); 1313 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1314 "'%s' must be a multiple of " 1315 "volume block size (%s)"), 1316 propname, buf); 1317 (void) zfs_error(hdl, EZFS_BADPROP, 1318 errbuf); 1319 goto error; 1320 } 1321 1322 if (intval == 0) { 1323 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1324 "'%s' cannot be zero"), 1325 propname); 1326 (void) zfs_error(hdl, EZFS_BADPROP, 1327 errbuf); 1328 goto error; 1329 } 1330 break; 1331 1332 default: 1333 break; 1334 } 1335 } 1336 } 1337 1338 /* 1339 * If normalization was chosen, but no UTF8 choice was made, 1340 * enforce rejection of non-UTF8 names. 1341 * 1342 * If normalization was chosen, but rejecting non-UTF8 names 1343 * was explicitly not chosen, it is an error. 1344 */ 1345 if (chosen_normal > 0 && chosen_utf < 0) { 1346 if (nvlist_add_uint64(ret, 1347 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), 1) != 0) { 1348 (void) no_memory(hdl); 1349 goto error; 1350 } 1351 } else if (chosen_normal > 0 && chosen_utf == 0) { 1352 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1353 "'%s' must be set 'on' if normalization chosen"), 1354 zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); 1355 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1356 goto error; 1357 } 1358 return (ret); 1359 1360 error: 1361 nvlist_free(ret); 1362 return (NULL); 1363 } 1364 1365 int 1366 zfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl) 1367 { 1368 uint64_t old_volsize; 1369 uint64_t new_volsize; 1370 uint64_t old_reservation; 1371 uint64_t new_reservation; 1372 zfs_prop_t resv_prop; 1373 nvlist_t *props; 1374 1375 /* 1376 * If this is an existing volume, and someone is setting the volsize, 1377 * make sure that it matches the reservation, or add it if necessary. 1378 */ 1379 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 1380 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 1381 return (-1); 1382 old_reservation = zfs_prop_get_int(zhp, resv_prop); 1383 1384 props = fnvlist_alloc(); 1385 fnvlist_add_uint64(props, zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 1386 zfs_prop_get_int(zhp, ZFS_PROP_VOLBLOCKSIZE)); 1387 1388 if ((zvol_volsize_to_reservation(old_volsize, props) != 1389 old_reservation) || nvlist_exists(nvl, 1390 zfs_prop_to_name(resv_prop))) { 1391 fnvlist_free(props); 1392 return (0); 1393 } 1394 if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1395 &new_volsize) != 0) { 1396 fnvlist_free(props); 1397 return (-1); 1398 } 1399 new_reservation = zvol_volsize_to_reservation(new_volsize, props); 1400 fnvlist_free(props); 1401 1402 if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop), 1403 new_reservation) != 0) { 1404 (void) no_memory(zhp->zfs_hdl); 1405 return (-1); 1406 } 1407 return (1); 1408 } 1409 1410 void 1411 zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err, 1412 char *errbuf) 1413 { 1414 switch (err) { 1415 1416 case ENOSPC: 1417 /* 1418 * For quotas and reservations, ENOSPC indicates 1419 * something different; setting a quota or reservation 1420 * doesn't use any disk space. 1421 */ 1422 switch (prop) { 1423 case ZFS_PROP_QUOTA: 1424 case ZFS_PROP_REFQUOTA: 1425 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1426 "size is less than current used or " 1427 "reserved space")); 1428 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1429 break; 1430 1431 case ZFS_PROP_RESERVATION: 1432 case ZFS_PROP_REFRESERVATION: 1433 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1434 "size is greater than available space")); 1435 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); 1436 break; 1437 1438 default: 1439 (void) zfs_standard_error(hdl, err, errbuf); 1440 break; 1441 } 1442 break; 1443 1444 case EBUSY: 1445 (void) zfs_standard_error(hdl, EBUSY, errbuf); 1446 break; 1447 1448 case EROFS: 1449 (void) zfs_error(hdl, EZFS_DSREADONLY, errbuf); 1450 break; 1451 1452 case E2BIG: 1453 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1454 "property value too long")); 1455 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1456 break; 1457 1458 case ENOTSUP: 1459 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1460 "pool and or dataset must be upgraded to set this " 1461 "property or value")); 1462 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 1463 break; 1464 1465 case ERANGE: 1466 if (prop == ZFS_PROP_COMPRESSION || 1467 prop == ZFS_PROP_RECORDSIZE) { 1468 (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1469 "property setting is not allowed on " 1470 "bootable datasets")); 1471 (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); 1472 } else if (prop == ZFS_PROP_CHECKSUM || 1473 prop == ZFS_PROP_DEDUP) { 1474 (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1475 "property setting is not allowed on " 1476 "root pools")); 1477 (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); 1478 } else { 1479 (void) zfs_standard_error(hdl, err, errbuf); 1480 } 1481 break; 1482 1483 case EINVAL: 1484 if (prop == ZPROP_INVAL) { 1485 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 1486 } else { 1487 (void) zfs_standard_error(hdl, err, errbuf); 1488 } 1489 break; 1490 1491 case EOVERFLOW: 1492 /* 1493 * This platform can't address a volume this big. 1494 */ 1495 #ifdef _ILP32 1496 if (prop == ZFS_PROP_VOLSIZE) { 1497 (void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf); 1498 break; 1499 } 1500 #endif 1501 /* FALLTHROUGH */ 1502 default: 1503 (void) zfs_standard_error(hdl, err, errbuf); 1504 } 1505 } 1506 1507 /* 1508 * Given a property name and value, set the property for the given dataset. 1509 */ 1510 int 1511 zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) 1512 { 1513 int ret = -1; 1514 char errbuf[1024]; 1515 libzfs_handle_t *hdl = zhp->zfs_hdl; 1516 nvlist_t *nvl = NULL; 1517 1518 (void) snprintf(errbuf, sizeof (errbuf), 1519 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 1520 zhp->zfs_name); 1521 1522 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 || 1523 nvlist_add_string(nvl, propname, propval) != 0) { 1524 (void) no_memory(hdl); 1525 goto error; 1526 } 1527 1528 ret = zfs_prop_set_list(zhp, nvl); 1529 1530 error: 1531 nvlist_free(nvl); 1532 return (ret); 1533 } 1534 1535 1536 1537 /* 1538 * Given an nvlist of property names and values, set the properties for the 1539 * given dataset. 1540 */ 1541 int 1542 zfs_prop_set_list(zfs_handle_t *zhp, nvlist_t *props) 1543 { 1544 zfs_cmd_t zc = { 0 }; 1545 int ret = -1; 1546 prop_changelist_t **cls = NULL; 1547 int cl_idx; 1548 char errbuf[1024]; 1549 libzfs_handle_t *hdl = zhp->zfs_hdl; 1550 nvlist_t *nvl; 1551 int nvl_len; 1552 int added_resv = 0; 1553 1554 (void) snprintf(errbuf, sizeof (errbuf), 1555 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 1556 zhp->zfs_name); 1557 1558 if ((nvl = zfs_valid_proplist(hdl, zhp->zfs_type, props, 1559 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, zhp->zpool_hdl, 1560 errbuf)) == NULL) 1561 goto error; 1562 1563 /* 1564 * We have to check for any extra properties which need to be added 1565 * before computing the length of the nvlist. 1566 */ 1567 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1568 elem != NULL; 1569 elem = nvlist_next_nvpair(nvl, elem)) { 1570 if (zfs_name_to_prop(nvpair_name(elem)) == ZFS_PROP_VOLSIZE && 1571 (added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1) { 1572 goto error; 1573 } 1574 } 1575 /* 1576 * Check how many properties we're setting and allocate an array to 1577 * store changelist pointers for postfix(). 1578 */ 1579 nvl_len = 0; 1580 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1581 elem != NULL; 1582 elem = nvlist_next_nvpair(nvl, elem)) 1583 nvl_len++; 1584 if ((cls = calloc(nvl_len, sizeof (prop_changelist_t *))) == NULL) 1585 goto error; 1586 1587 cl_idx = 0; 1588 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1589 elem != NULL; 1590 elem = nvlist_next_nvpair(nvl, elem)) { 1591 1592 zfs_prop_t prop = zfs_name_to_prop(nvpair_name(elem)); 1593 1594 assert(cl_idx < nvl_len); 1595 /* 1596 * We don't want to unmount & remount the dataset when changing 1597 * its canmount property to 'on' or 'noauto'. We only use 1598 * the changelist logic to unmount when setting canmount=off. 1599 */ 1600 if (!(prop == ZFS_PROP_CANMOUNT && 1601 fnvpair_value_uint64(elem) != ZFS_CANMOUNT_OFF)) { 1602 cls[cl_idx] = changelist_gather(zhp, prop, 0, 0); 1603 if (cls[cl_idx] == NULL) 1604 goto error; 1605 } 1606 1607 if (prop == ZFS_PROP_MOUNTPOINT && 1608 changelist_haszonedchild(cls[cl_idx])) { 1609 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1610 "child dataset with inherited mountpoint is used " 1611 "in a non-global zone")); 1612 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1613 goto error; 1614 } 1615 1616 if (cls[cl_idx] != NULL && 1617 (ret = changelist_prefix(cls[cl_idx])) != 0) 1618 goto error; 1619 1620 cl_idx++; 1621 } 1622 assert(cl_idx == nvl_len); 1623 1624 /* 1625 * Execute the corresponding ioctl() to set this list of properties. 1626 */ 1627 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1628 1629 if ((ret = zcmd_write_src_nvlist(hdl, &zc, nvl)) != 0 || 1630 (ret = zcmd_alloc_dst_nvlist(hdl, &zc, 0)) != 0) 1631 goto error; 1632 1633 ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1634 1635 if (ret != 0) { 1636 /* Get the list of unset properties back and report them. */ 1637 nvlist_t *errorprops = NULL; 1638 if (zcmd_read_dst_nvlist(hdl, &zc, &errorprops) != 0) 1639 goto error; 1640 for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL); 1641 elem != NULL; 1642 elem = nvlist_next_nvpair(nvl, elem)) { 1643 zfs_prop_t prop = zfs_name_to_prop(nvpair_name(elem)); 1644 zfs_setprop_error(hdl, prop, errno, errbuf); 1645 } 1646 nvlist_free(errorprops); 1647 1648 if (added_resv && errno == ENOSPC) { 1649 /* clean up the volsize property we tried to set */ 1650 uint64_t old_volsize = zfs_prop_get_int(zhp, 1651 ZFS_PROP_VOLSIZE); 1652 nvlist_free(nvl); 1653 nvl = NULL; 1654 zcmd_free_nvlists(&zc); 1655 1656 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) 1657 goto error; 1658 if (nvlist_add_uint64(nvl, 1659 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 1660 old_volsize) != 0) 1661 goto error; 1662 if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) 1663 goto error; 1664 (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); 1665 } 1666 } else { 1667 for (cl_idx = 0; cl_idx < nvl_len; cl_idx++) { 1668 if (cls[cl_idx] != NULL) { 1669 int clp_err = changelist_postfix(cls[cl_idx]); 1670 if (clp_err != 0) 1671 ret = clp_err; 1672 } 1673 } 1674 1675 /* 1676 * Refresh the statistics so the new property value 1677 * is reflected. 1678 */ 1679 if (ret == 0) 1680 (void) get_stats(zhp); 1681 } 1682 1683 error: 1684 nvlist_free(nvl); 1685 zcmd_free_nvlists(&zc); 1686 if (cls != NULL) { 1687 for (cl_idx = 0; cl_idx < nvl_len; cl_idx++) { 1688 if (cls[cl_idx] != NULL) 1689 changelist_free(cls[cl_idx]); 1690 } 1691 free(cls); 1692 } 1693 return (ret); 1694 } 1695 1696 /* 1697 * Given a property, inherit the value from the parent dataset, or if received 1698 * is TRUE, revert to the received value, if any. 1699 */ 1700 int 1701 zfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received) 1702 { 1703 zfs_cmd_t zc = { 0 }; 1704 int ret; 1705 prop_changelist_t *cl; 1706 libzfs_handle_t *hdl = zhp->zfs_hdl; 1707 char errbuf[1024]; 1708 zfs_prop_t prop; 1709 1710 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 1711 "cannot inherit %s for '%s'"), propname, zhp->zfs_name); 1712 1713 zc.zc_cookie = received; 1714 if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) { 1715 /* 1716 * For user properties, the amount of work we have to do is very 1717 * small, so just do it here. 1718 */ 1719 if (!zfs_prop_user(propname)) { 1720 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1721 "invalid property")); 1722 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 1723 } 1724 1725 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1726 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1727 1728 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc) != 0) 1729 return (zfs_standard_error(hdl, errno, errbuf)); 1730 1731 return (0); 1732 } 1733 1734 /* 1735 * Verify that this property is inheritable. 1736 */ 1737 if (zfs_prop_readonly(prop)) 1738 return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf)); 1739 1740 if (!zfs_prop_inheritable(prop) && !received) 1741 return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf)); 1742 1743 /* 1744 * Check to see if the value applies to this type 1745 */ 1746 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 1747 return (zfs_error(hdl, EZFS_PROPTYPE, errbuf)); 1748 1749 /* 1750 * Normalize the name, to get rid of shorthand abbreviations. 1751 */ 1752 propname = zfs_prop_to_name(prop); 1753 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 1754 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); 1755 1756 if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID && 1757 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 1758 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1759 "dataset is used in a non-global zone")); 1760 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 1761 } 1762 1763 /* 1764 * Determine datasets which will be affected by this change, if any. 1765 */ 1766 if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) 1767 return (-1); 1768 1769 if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { 1770 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1771 "child dataset with inherited mountpoint is used " 1772 "in a non-global zone")); 1773 ret = zfs_error(hdl, EZFS_ZONED, errbuf); 1774 goto error; 1775 } 1776 1777 if ((ret = changelist_prefix(cl)) != 0) 1778 goto error; 1779 1780 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc)) != 0) { 1781 return (zfs_standard_error(hdl, errno, errbuf)); 1782 } else { 1783 1784 if ((ret = changelist_postfix(cl)) != 0) 1785 goto error; 1786 1787 /* 1788 * Refresh the statistics so the new property is reflected. 1789 */ 1790 (void) get_stats(zhp); 1791 } 1792 1793 error: 1794 changelist_free(cl); 1795 return (ret); 1796 } 1797 1798 /* 1799 * True DSL properties are stored in an nvlist. The following two functions 1800 * extract them appropriately. 1801 */ 1802 static uint64_t 1803 getprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 1804 { 1805 nvlist_t *nv; 1806 uint64_t value; 1807 1808 *source = NULL; 1809 if (nvlist_lookup_nvlist(zhp->zfs_props, 1810 zfs_prop_to_name(prop), &nv) == 0) { 1811 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); 1812 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 1813 } else { 1814 verify(!zhp->zfs_props_table || 1815 zhp->zfs_props_table[prop] == B_TRUE); 1816 value = zfs_prop_default_numeric(prop); 1817 *source = ""; 1818 } 1819 1820 return (value); 1821 } 1822 1823 static const char * 1824 getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source) 1825 { 1826 nvlist_t *nv; 1827 const char *value; 1828 1829 *source = NULL; 1830 if (nvlist_lookup_nvlist(zhp->zfs_props, 1831 zfs_prop_to_name(prop), &nv) == 0) { 1832 value = fnvlist_lookup_string(nv, ZPROP_VALUE); 1833 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); 1834 } else { 1835 verify(!zhp->zfs_props_table || 1836 zhp->zfs_props_table[prop] == B_TRUE); 1837 value = zfs_prop_default_string(prop); 1838 *source = ""; 1839 } 1840 1841 return (value); 1842 } 1843 1844 static boolean_t 1845 zfs_is_recvd_props_mode(zfs_handle_t *zhp) 1846 { 1847 return (zhp->zfs_props == zhp->zfs_recvd_props); 1848 } 1849 1850 static void 1851 zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1852 { 1853 *cookie = (uint64_t)(uintptr_t)zhp->zfs_props; 1854 zhp->zfs_props = zhp->zfs_recvd_props; 1855 } 1856 1857 static void 1858 zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) 1859 { 1860 zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie; 1861 *cookie = 0; 1862 } 1863 1864 /* 1865 * Internal function for getting a numeric property. Both zfs_prop_get() and 1866 * zfs_prop_get_int() are built using this interface. 1867 * 1868 * Certain properties can be overridden using 'mount -o'. In this case, scan 1869 * the contents of the /etc/mnttab entry, searching for the appropriate options. 1870 * If they differ from the on-disk values, report the current values and mark 1871 * the source "temporary". 1872 */ 1873 static int 1874 get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, 1875 char **source, uint64_t *val) 1876 { 1877 zfs_cmd_t zc = { 0 }; 1878 nvlist_t *zplprops = NULL; 1879 struct mnttab mnt; 1880 char *mntopt_on = NULL; 1881 char *mntopt_off = NULL; 1882 boolean_t received = zfs_is_recvd_props_mode(zhp); 1883 1884 *source = NULL; 1885 1886 switch (prop) { 1887 case ZFS_PROP_ATIME: 1888 mntopt_on = MNTOPT_ATIME; 1889 mntopt_off = MNTOPT_NOATIME; 1890 break; 1891 1892 case ZFS_PROP_DEVICES: 1893 mntopt_on = MNTOPT_DEVICES; 1894 mntopt_off = MNTOPT_NODEVICES; 1895 break; 1896 1897 case ZFS_PROP_EXEC: 1898 mntopt_on = MNTOPT_EXEC; 1899 mntopt_off = MNTOPT_NOEXEC; 1900 break; 1901 1902 case ZFS_PROP_READONLY: 1903 mntopt_on = MNTOPT_RO; 1904 mntopt_off = MNTOPT_RW; 1905 break; 1906 1907 case ZFS_PROP_SETUID: 1908 mntopt_on = MNTOPT_SETUID; 1909 mntopt_off = MNTOPT_NOSETUID; 1910 break; 1911 1912 case ZFS_PROP_XATTR: 1913 mntopt_on = MNTOPT_XATTR; 1914 mntopt_off = MNTOPT_NOXATTR; 1915 break; 1916 1917 case ZFS_PROP_NBMAND: 1918 mntopt_on = MNTOPT_NBMAND; 1919 mntopt_off = MNTOPT_NONBMAND; 1920 break; 1921 1922 default: 1923 break; 1924 } 1925 1926 /* 1927 * Because looking up the mount options is potentially expensive 1928 * (iterating over all of /etc/mnttab), we defer its calculation until 1929 * we're looking up a property which requires its presence. 1930 */ 1931 if (!zhp->zfs_mntcheck && 1932 (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) { 1933 libzfs_handle_t *hdl = zhp->zfs_hdl; 1934 struct mnttab entry; 1935 1936 if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) { 1937 zhp->zfs_mntopts = zfs_strdup(hdl, 1938 entry.mnt_mntopts); 1939 if (zhp->zfs_mntopts == NULL) 1940 return (-1); 1941 } 1942 1943 zhp->zfs_mntcheck = B_TRUE; 1944 } 1945 1946 if (zhp->zfs_mntopts == NULL) 1947 mnt.mnt_mntopts = ""; 1948 else 1949 mnt.mnt_mntopts = zhp->zfs_mntopts; 1950 1951 switch (prop) { 1952 case ZFS_PROP_ATIME: 1953 case ZFS_PROP_DEVICES: 1954 case ZFS_PROP_EXEC: 1955 case ZFS_PROP_READONLY: 1956 case ZFS_PROP_SETUID: 1957 case ZFS_PROP_XATTR: 1958 case ZFS_PROP_NBMAND: 1959 *val = getprop_uint64(zhp, prop, source); 1960 1961 if (received) 1962 break; 1963 1964 if (hasmntopt(&mnt, mntopt_on) && !*val) { 1965 *val = B_TRUE; 1966 if (src) 1967 *src = ZPROP_SRC_TEMPORARY; 1968 } else if (hasmntopt(&mnt, mntopt_off) && *val) { 1969 *val = B_FALSE; 1970 if (src) 1971 *src = ZPROP_SRC_TEMPORARY; 1972 } 1973 break; 1974 1975 case ZFS_PROP_CANMOUNT: 1976 case ZFS_PROP_VOLSIZE: 1977 case ZFS_PROP_QUOTA: 1978 case ZFS_PROP_REFQUOTA: 1979 case ZFS_PROP_RESERVATION: 1980 case ZFS_PROP_REFRESERVATION: 1981 case ZFS_PROP_FILESYSTEM_LIMIT: 1982 case ZFS_PROP_SNAPSHOT_LIMIT: 1983 case ZFS_PROP_FILESYSTEM_COUNT: 1984 case ZFS_PROP_SNAPSHOT_COUNT: 1985 *val = getprop_uint64(zhp, prop, source); 1986 1987 if (*source == NULL) { 1988 /* not default, must be local */ 1989 *source = zhp->zfs_name; 1990 } 1991 break; 1992 1993 case ZFS_PROP_MOUNTED: 1994 *val = (zhp->zfs_mntopts != NULL); 1995 break; 1996 1997 case ZFS_PROP_NUMCLONES: 1998 *val = zhp->zfs_dmustats.dds_num_clones; 1999 break; 2000 2001 case ZFS_PROP_VERSION: 2002 case ZFS_PROP_NORMALIZE: 2003 case ZFS_PROP_UTF8ONLY: 2004 case ZFS_PROP_CASE: 2005 if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) || 2006 zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) 2007 return (-1); 2008 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2009 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) { 2010 zcmd_free_nvlists(&zc); 2011 return (-1); 2012 } 2013 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 || 2014 nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop), 2015 val) != 0) { 2016 zcmd_free_nvlists(&zc); 2017 return (-1); 2018 } 2019 nvlist_free(zplprops); 2020 zcmd_free_nvlists(&zc); 2021 break; 2022 2023 case ZFS_PROP_INCONSISTENT: 2024 *val = zhp->zfs_dmustats.dds_inconsistent; 2025 break; 2026 2027 default: 2028 switch (zfs_prop_get_type(prop)) { 2029 case PROP_TYPE_NUMBER: 2030 case PROP_TYPE_INDEX: 2031 *val = getprop_uint64(zhp, prop, source); 2032 /* 2033 * If we tried to use a default value for a 2034 * readonly property, it means that it was not 2035 * present. 2036 */ 2037 if (zfs_prop_readonly(prop) && 2038 *source != NULL && (*source)[0] == '\0') { 2039 *source = NULL; 2040 return (-1); 2041 } 2042 break; 2043 2044 case PROP_TYPE_STRING: 2045 default: 2046 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 2047 "cannot get non-numeric property")); 2048 return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP, 2049 dgettext(TEXT_DOMAIN, "internal error"))); 2050 } 2051 } 2052 2053 return (0); 2054 } 2055 2056 /* 2057 * Calculate the source type, given the raw source string. 2058 */ 2059 static void 2060 get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source, 2061 char *statbuf, size_t statlen) 2062 { 2063 if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY) 2064 return; 2065 2066 if (source == NULL) { 2067 *srctype = ZPROP_SRC_NONE; 2068 } else if (source[0] == '\0') { 2069 *srctype = ZPROP_SRC_DEFAULT; 2070 } else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) { 2071 *srctype = ZPROP_SRC_RECEIVED; 2072 } else { 2073 if (strcmp(source, zhp->zfs_name) == 0) { 2074 *srctype = ZPROP_SRC_LOCAL; 2075 } else { 2076 (void) strlcpy(statbuf, source, statlen); 2077 *srctype = ZPROP_SRC_INHERITED; 2078 } 2079 } 2080 2081 } 2082 2083 int 2084 zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf, 2085 size_t proplen, boolean_t literal) 2086 { 2087 zfs_prop_t prop; 2088 int err = 0; 2089 2090 if (zhp->zfs_recvd_props == NULL) 2091 if (get_recvd_props_ioctl(zhp) != 0) 2092 return (-1); 2093 2094 prop = zfs_name_to_prop(propname); 2095 2096 if (prop != ZPROP_INVAL) { 2097 uint64_t cookie; 2098 if (!nvlist_exists(zhp->zfs_recvd_props, propname)) 2099 return (-1); 2100 zfs_set_recvd_props_mode(zhp, &cookie); 2101 err = zfs_prop_get(zhp, prop, propbuf, proplen, 2102 NULL, NULL, 0, literal); 2103 zfs_unset_recvd_props_mode(zhp, &cookie); 2104 } else { 2105 nvlist_t *propval; 2106 char *recvdval; 2107 if (nvlist_lookup_nvlist(zhp->zfs_recvd_props, 2108 propname, &propval) != 0) 2109 return (-1); 2110 verify(nvlist_lookup_string(propval, ZPROP_VALUE, 2111 &recvdval) == 0); 2112 (void) strlcpy(propbuf, recvdval, proplen); 2113 } 2114 2115 return (err == 0 ? 0 : -1); 2116 } 2117 2118 static int 2119 get_clones_string(zfs_handle_t *zhp, char *propbuf, size_t proplen) 2120 { 2121 nvlist_t *value; 2122 nvpair_t *pair; 2123 2124 value = zfs_get_clones_nvl(zhp); 2125 if (value == NULL) 2126 return (-1); 2127 2128 propbuf[0] = '\0'; 2129 for (pair = nvlist_next_nvpair(value, NULL); pair != NULL; 2130 pair = nvlist_next_nvpair(value, pair)) { 2131 if (propbuf[0] != '\0') 2132 (void) strlcat(propbuf, ",", proplen); 2133 (void) strlcat(propbuf, nvpair_name(pair), proplen); 2134 } 2135 2136 return (0); 2137 } 2138 2139 struct get_clones_arg { 2140 uint64_t numclones; 2141 nvlist_t *value; 2142 const char *origin; 2143 char buf[ZFS_MAX_DATASET_NAME_LEN]; 2144 }; 2145 2146 int 2147 get_clones_cb(zfs_handle_t *zhp, void *arg) 2148 { 2149 struct get_clones_arg *gca = arg; 2150 2151 if (gca->numclones == 0) { 2152 zfs_close(zhp); 2153 return (0); 2154 } 2155 2156 if (zfs_prop_get(zhp, ZFS_PROP_ORIGIN, gca->buf, sizeof (gca->buf), 2157 NULL, NULL, 0, B_TRUE) != 0) 2158 goto out; 2159 if (strcmp(gca->buf, gca->origin) == 0) { 2160 fnvlist_add_boolean(gca->value, zfs_get_name(zhp)); 2161 gca->numclones--; 2162 } 2163 2164 out: 2165 (void) zfs_iter_children(zhp, get_clones_cb, gca); 2166 zfs_close(zhp); 2167 return (0); 2168 } 2169 2170 nvlist_t * 2171 zfs_get_clones_nvl(zfs_handle_t *zhp) 2172 { 2173 nvlist_t *nv, *value; 2174 2175 if (nvlist_lookup_nvlist(zhp->zfs_props, 2176 zfs_prop_to_name(ZFS_PROP_CLONES), &nv) != 0) { 2177 struct get_clones_arg gca; 2178 2179 /* 2180 * if this is a snapshot, then the kernel wasn't able 2181 * to get the clones. Do it by slowly iterating. 2182 */ 2183 if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) 2184 return (NULL); 2185 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, 0) != 0) 2186 return (NULL); 2187 if (nvlist_alloc(&value, NV_UNIQUE_NAME, 0) != 0) { 2188 nvlist_free(nv); 2189 return (NULL); 2190 } 2191 2192 gca.numclones = zfs_prop_get_int(zhp, ZFS_PROP_NUMCLONES); 2193 gca.value = value; 2194 gca.origin = zhp->zfs_name; 2195 2196 if (gca.numclones != 0) { 2197 zfs_handle_t *root; 2198 char pool[ZFS_MAX_DATASET_NAME_LEN]; 2199 char *cp = pool; 2200 2201 /* get the pool name */ 2202 (void) strlcpy(pool, zhp->zfs_name, sizeof (pool)); 2203 (void) strsep(&cp, "/@"); 2204 root = zfs_open(zhp->zfs_hdl, pool, 2205 ZFS_TYPE_FILESYSTEM); 2206 2207 (void) get_clones_cb(root, &gca); 2208 } 2209 2210 if (gca.numclones != 0 || 2211 nvlist_add_nvlist(nv, ZPROP_VALUE, value) != 0 || 2212 nvlist_add_nvlist(zhp->zfs_props, 2213 zfs_prop_to_name(ZFS_PROP_CLONES), nv) != 0) { 2214 nvlist_free(nv); 2215 nvlist_free(value); 2216 return (NULL); 2217 } 2218 nvlist_free(nv); 2219 nvlist_free(value); 2220 verify(0 == nvlist_lookup_nvlist(zhp->zfs_props, 2221 zfs_prop_to_name(ZFS_PROP_CLONES), &nv)); 2222 } 2223 2224 verify(nvlist_lookup_nvlist(nv, ZPROP_VALUE, &value) == 0); 2225 2226 return (value); 2227 } 2228 2229 /* 2230 * Retrieve a property from the given object. If 'literal' is specified, then 2231 * numbers are left as exact values. Otherwise, numbers are converted to a 2232 * human-readable form. 2233 * 2234 * Returns 0 on success, or -1 on error. 2235 */ 2236 int 2237 zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, 2238 zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal) 2239 { 2240 char *source = NULL; 2241 uint64_t val; 2242 const char *str; 2243 const char *strval; 2244 boolean_t received = zfs_is_recvd_props_mode(zhp); 2245 2246 /* 2247 * Check to see if this property applies to our object 2248 */ 2249 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) 2250 return (-1); 2251 2252 if (received && zfs_prop_readonly(prop)) 2253 return (-1); 2254 2255 if (src) 2256 *src = ZPROP_SRC_NONE; 2257 2258 switch (prop) { 2259 case ZFS_PROP_CREATION: 2260 /* 2261 * 'creation' is a time_t stored in the statistics. We convert 2262 * this into a string unless 'literal' is specified. 2263 */ 2264 { 2265 val = getprop_uint64(zhp, prop, &source); 2266 time_t time = (time_t)val; 2267 struct tm t; 2268 2269 if (literal || 2270 localtime_r(&time, &t) == NULL || 2271 strftime(propbuf, proplen, "%a %b %e %k:%M %Y", 2272 &t) == 0) 2273 (void) snprintf(propbuf, proplen, "%llu", val); 2274 } 2275 break; 2276 2277 case ZFS_PROP_MOUNTPOINT: 2278 /* 2279 * Getting the precise mountpoint can be tricky. 2280 * 2281 * - for 'none' or 'legacy', return those values. 2282 * - for inherited mountpoints, we want to take everything 2283 * after our ancestor and append it to the inherited value. 2284 * 2285 * If the pool has an alternate root, we want to prepend that 2286 * root to any values we return. 2287 */ 2288 2289 str = getprop_string(zhp, prop, &source); 2290 2291 if (str[0] == '/') { 2292 char buf[MAXPATHLEN]; 2293 char *root = buf; 2294 const char *relpath; 2295 2296 /* 2297 * If we inherit the mountpoint, even from a dataset 2298 * with a received value, the source will be the path of 2299 * the dataset we inherit from. If source is 2300 * ZPROP_SOURCE_VAL_RECVD, the received value is not 2301 * inherited. 2302 */ 2303 if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) { 2304 relpath = ""; 2305 } else { 2306 relpath = zhp->zfs_name + strlen(source); 2307 if (relpath[0] == '/') 2308 relpath++; 2309 } 2310 2311 if ((zpool_get_prop(zhp->zpool_hdl, 2312 ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL, 2313 B_FALSE)) || (strcmp(root, "-") == 0)) 2314 root[0] = '\0'; 2315 /* 2316 * Special case an alternate root of '/'. This will 2317 * avoid having multiple leading slashes in the 2318 * mountpoint path. 2319 */ 2320 if (strcmp(root, "/") == 0) 2321 root++; 2322 2323 /* 2324 * If the mountpoint is '/' then skip over this 2325 * if we are obtaining either an alternate root or 2326 * an inherited mountpoint. 2327 */ 2328 if (str[1] == '\0' && (root[0] != '\0' || 2329 relpath[0] != '\0')) 2330 str++; 2331 2332 if (relpath[0] == '\0') 2333 (void) snprintf(propbuf, proplen, "%s%s", 2334 root, str); 2335 else 2336 (void) snprintf(propbuf, proplen, "%s%s%s%s", 2337 root, str, relpath[0] == '@' ? "" : "/", 2338 relpath); 2339 } else { 2340 /* 'legacy' or 'none' */ 2341 (void) strlcpy(propbuf, str, proplen); 2342 } 2343 2344 break; 2345 2346 case ZFS_PROP_ORIGIN: 2347 str = getprop_string(zhp, prop, &source); 2348 if (str == NULL) 2349 return (-1); 2350 (void) strlcpy(propbuf, str, proplen); 2351 break; 2352 2353 case ZFS_PROP_CLONES: 2354 if (get_clones_string(zhp, propbuf, proplen) != 0) 2355 return (-1); 2356 break; 2357 2358 case ZFS_PROP_QUOTA: 2359 case ZFS_PROP_REFQUOTA: 2360 case ZFS_PROP_RESERVATION: 2361 case ZFS_PROP_REFRESERVATION: 2362 2363 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2364 return (-1); 2365 2366 /* 2367 * If quota or reservation is 0, we translate this into 'none' 2368 * (unless literal is set), and indicate that it's the default 2369 * value. Otherwise, we print the number nicely and indicate 2370 * that its set locally. 2371 */ 2372 if (val == 0) { 2373 if (literal) 2374 (void) strlcpy(propbuf, "0", proplen); 2375 else 2376 (void) strlcpy(propbuf, "none", proplen); 2377 } else { 2378 if (literal) 2379 (void) snprintf(propbuf, proplen, "%llu", 2380 (u_longlong_t)val); 2381 else 2382 zfs_nicenum(val, propbuf, proplen); 2383 } 2384 break; 2385 2386 case ZFS_PROP_FILESYSTEM_LIMIT: 2387 case ZFS_PROP_SNAPSHOT_LIMIT: 2388 case ZFS_PROP_FILESYSTEM_COUNT: 2389 case ZFS_PROP_SNAPSHOT_COUNT: 2390 2391 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2392 return (-1); 2393 2394 /* 2395 * If limit is UINT64_MAX, we translate this into 'none' (unless 2396 * literal is set), and indicate that it's the default value. 2397 * Otherwise, we print the number nicely and indicate that it's 2398 * set locally. 2399 */ 2400 if (literal) { 2401 (void) snprintf(propbuf, proplen, "%llu", 2402 (u_longlong_t)val); 2403 } else if (val == UINT64_MAX) { 2404 (void) strlcpy(propbuf, "none", proplen); 2405 } else { 2406 zfs_nicenum(val, propbuf, proplen); 2407 } 2408 break; 2409 2410 case ZFS_PROP_REFRATIO: 2411 case ZFS_PROP_COMPRESSRATIO: 2412 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2413 return (-1); 2414 (void) snprintf(propbuf, proplen, "%llu.%02llux", 2415 (u_longlong_t)(val / 100), 2416 (u_longlong_t)(val % 100)); 2417 break; 2418 2419 case ZFS_PROP_TYPE: 2420 switch (zhp->zfs_type) { 2421 case ZFS_TYPE_FILESYSTEM: 2422 str = "filesystem"; 2423 break; 2424 case ZFS_TYPE_VOLUME: 2425 str = "volume"; 2426 break; 2427 case ZFS_TYPE_SNAPSHOT: 2428 str = "snapshot"; 2429 break; 2430 case ZFS_TYPE_BOOKMARK: 2431 str = "bookmark"; 2432 break; 2433 default: 2434 abort(); 2435 } 2436 (void) snprintf(propbuf, proplen, "%s", str); 2437 break; 2438 2439 case ZFS_PROP_MOUNTED: 2440 /* 2441 * The 'mounted' property is a pseudo-property that described 2442 * whether the filesystem is currently mounted. Even though 2443 * it's a boolean value, the typical values of "on" and "off" 2444 * don't make sense, so we translate to "yes" and "no". 2445 */ 2446 if (get_numeric_property(zhp, ZFS_PROP_MOUNTED, 2447 src, &source, &val) != 0) 2448 return (-1); 2449 if (val) 2450 (void) strlcpy(propbuf, "yes", proplen); 2451 else 2452 (void) strlcpy(propbuf, "no", proplen); 2453 break; 2454 2455 case ZFS_PROP_NAME: 2456 /* 2457 * The 'name' property is a pseudo-property derived from the 2458 * dataset name. It is presented as a real property to simplify 2459 * consumers. 2460 */ 2461 (void) strlcpy(propbuf, zhp->zfs_name, proplen); 2462 break; 2463 2464 case ZFS_PROP_MLSLABEL: 2465 { 2466 m_label_t *new_sl = NULL; 2467 char *ascii = NULL; /* human readable label */ 2468 2469 (void) strlcpy(propbuf, 2470 getprop_string(zhp, prop, &source), proplen); 2471 2472 if (literal || (strcasecmp(propbuf, 2473 ZFS_MLSLABEL_DEFAULT) == 0)) 2474 break; 2475 2476 /* 2477 * Try to translate the internal hex string to 2478 * human-readable output. If there are any 2479 * problems just use the hex string. 2480 */ 2481 2482 if (str_to_label(propbuf, &new_sl, MAC_LABEL, 2483 L_NO_CORRECTION, NULL) == -1) { 2484 m_label_free(new_sl); 2485 break; 2486 } 2487 2488 if (label_to_str(new_sl, &ascii, M_LABEL, 2489 DEF_NAMES) != 0) { 2490 if (ascii) 2491 free(ascii); 2492 m_label_free(new_sl); 2493 break; 2494 } 2495 m_label_free(new_sl); 2496 2497 (void) strlcpy(propbuf, ascii, proplen); 2498 free(ascii); 2499 } 2500 break; 2501 2502 case ZFS_PROP_GUID: 2503 /* 2504 * GUIDs are stored as numbers, but they are identifiers. 2505 * We don't want them to be pretty printed, because pretty 2506 * printing mangles the ID into a truncated and useless value. 2507 */ 2508 if (get_numeric_property(zhp, prop, src, &source, &val) != 0) 2509 return (-1); 2510 (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t)val); 2511 break; 2512 2513 default: 2514 switch (zfs_prop_get_type(prop)) { 2515 case PROP_TYPE_NUMBER: 2516 if (get_numeric_property(zhp, prop, src, 2517 &source, &val) != 0) 2518 return (-1); 2519 if (literal) 2520 (void) snprintf(propbuf, proplen, "%llu", 2521 (u_longlong_t)val); 2522 else 2523 zfs_nicenum(val, propbuf, proplen); 2524 break; 2525 2526 case PROP_TYPE_STRING: 2527 str = getprop_string(zhp, prop, &source); 2528 if (str == NULL) 2529 return (-1); 2530 (void) strlcpy(propbuf, str, proplen); 2531 break; 2532 2533 case PROP_TYPE_INDEX: 2534 if (get_numeric_property(zhp, prop, src, 2535 &source, &val) != 0) 2536 return (-1); 2537 if (zfs_prop_index_to_string(prop, val, &strval) != 0) 2538 return (-1); 2539 (void) strlcpy(propbuf, strval, proplen); 2540 break; 2541 2542 default: 2543 abort(); 2544 } 2545 } 2546 2547 get_source(zhp, src, source, statbuf, statlen); 2548 2549 return (0); 2550 } 2551 2552 /* 2553 * Utility function to get the given numeric property. Does no validation that 2554 * the given property is the appropriate type; should only be used with 2555 * hard-coded property types. 2556 */ 2557 uint64_t 2558 zfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop) 2559 { 2560 char *source; 2561 uint64_t val; 2562 2563 (void) get_numeric_property(zhp, prop, NULL, &source, &val); 2564 2565 return (val); 2566 } 2567 2568 int 2569 zfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val) 2570 { 2571 char buf[64]; 2572 2573 (void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val); 2574 return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf)); 2575 } 2576 2577 /* 2578 * Similar to zfs_prop_get(), but returns the value as an integer. 2579 */ 2580 int 2581 zfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value, 2582 zprop_source_t *src, char *statbuf, size_t statlen) 2583 { 2584 char *source; 2585 2586 /* 2587 * Check to see if this property applies to our object 2588 */ 2589 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) { 2590 return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE, 2591 dgettext(TEXT_DOMAIN, "cannot get property '%s'"), 2592 zfs_prop_to_name(prop))); 2593 } 2594 2595 if (src) 2596 *src = ZPROP_SRC_NONE; 2597 2598 if (get_numeric_property(zhp, prop, src, &source, value) != 0) 2599 return (-1); 2600 2601 get_source(zhp, src, source, statbuf, statlen); 2602 2603 return (0); 2604 } 2605 2606 static int 2607 idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser, 2608 char **domainp, idmap_rid_t *ridp) 2609 { 2610 idmap_get_handle_t *get_hdl = NULL; 2611 idmap_stat status; 2612 int err = EINVAL; 2613 2614 if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS) 2615 goto out; 2616 2617 if (isuser) { 2618 err = idmap_get_sidbyuid(get_hdl, id, 2619 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2620 } else { 2621 err = idmap_get_sidbygid(get_hdl, id, 2622 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); 2623 } 2624 if (err == IDMAP_SUCCESS && 2625 idmap_get_mappings(get_hdl) == IDMAP_SUCCESS && 2626 status == IDMAP_SUCCESS) 2627 err = 0; 2628 else 2629 err = EINVAL; 2630 out: 2631 if (get_hdl) 2632 idmap_get_destroy(get_hdl); 2633 return (err); 2634 } 2635 2636 /* 2637 * convert the propname into parameters needed by kernel 2638 * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829 2639 * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789 2640 */ 2641 static int 2642 userquota_propname_decode(const char *propname, boolean_t zoned, 2643 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp) 2644 { 2645 zfs_userquota_prop_t type; 2646 char *cp, *end; 2647 char *numericsid = NULL; 2648 boolean_t isuser; 2649 2650 domain[0] = '\0'; 2651 *ridp = 0; 2652 /* Figure out the property type ({user|group}{quota|space}) */ 2653 for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) { 2654 if (strncmp(propname, zfs_userquota_prop_prefixes[type], 2655 strlen(zfs_userquota_prop_prefixes[type])) == 0) 2656 break; 2657 } 2658 if (type == ZFS_NUM_USERQUOTA_PROPS) 2659 return (EINVAL); 2660 *typep = type; 2661 2662 isuser = (type == ZFS_PROP_USERQUOTA || 2663 type == ZFS_PROP_USERUSED); 2664 2665 cp = strchr(propname, '@') + 1; 2666 2667 if (strchr(cp, '@')) { 2668 /* 2669 * It's a SID name (eg "user@domain") that needs to be 2670 * turned into S-1-domainID-RID. 2671 */ 2672 int flag = 0; 2673 idmap_stat stat, map_stat; 2674 uid_t pid; 2675 idmap_rid_t rid; 2676 idmap_get_handle_t *gh = NULL; 2677 2678 stat = idmap_get_create(&gh); 2679 if (stat != IDMAP_SUCCESS) { 2680 idmap_get_destroy(gh); 2681 return (ENOMEM); 2682 } 2683 if (zoned && getzoneid() == GLOBAL_ZONEID) 2684 return (ENOENT); 2685 if (isuser) { 2686 stat = idmap_getuidbywinname(cp, NULL, flag, &pid); 2687 if (stat < 0) 2688 return (ENOENT); 2689 stat = idmap_get_sidbyuid(gh, pid, flag, &numericsid, 2690 &rid, &map_stat); 2691 } else { 2692 stat = idmap_getgidbywinname(cp, NULL, flag, &pid); 2693 if (stat < 0) 2694 return (ENOENT); 2695 stat = idmap_get_sidbygid(gh, pid, flag, &numericsid, 2696 &rid, &map_stat); 2697 } 2698 if (stat < 0) { 2699 idmap_get_destroy(gh); 2700 return (ENOENT); 2701 } 2702 stat = idmap_get_mappings(gh); 2703 idmap_get_destroy(gh); 2704 2705 if (stat < 0) { 2706 return (ENOENT); 2707 } 2708 if (numericsid == NULL) 2709 return (ENOENT); 2710 cp = numericsid; 2711 *ridp = rid; 2712 /* will be further decoded below */ 2713 } 2714 2715 if (strncmp(cp, "S-1-", 4) == 0) { 2716 /* It's a numeric SID (eg "S-1-234-567-89") */ 2717 (void) strlcpy(domain, cp, domainlen); 2718 errno = 0; 2719 if (*ridp == 0) { 2720 cp = strrchr(domain, '-'); 2721 *cp = '\0'; 2722 cp++; 2723 *ridp = strtoull(cp, &end, 10); 2724 } else { 2725 end = ""; 2726 } 2727 if (numericsid) { 2728 free(numericsid); 2729 numericsid = NULL; 2730 } 2731 if (errno != 0 || *end != '\0') 2732 return (EINVAL); 2733 } else if (!isdigit(*cp)) { 2734 /* 2735 * It's a user/group name (eg "user") that needs to be 2736 * turned into a uid/gid 2737 */ 2738 if (zoned && getzoneid() == GLOBAL_ZONEID) 2739 return (ENOENT); 2740 if (isuser) { 2741 struct passwd *pw; 2742 pw = getpwnam(cp); 2743 if (pw == NULL) 2744 return (ENOENT); 2745 *ridp = pw->pw_uid; 2746 } else { 2747 struct group *gr; 2748 gr = getgrnam(cp); 2749 if (gr == NULL) 2750 return (ENOENT); 2751 *ridp = gr->gr_gid; 2752 } 2753 } else { 2754 /* It's a user/group ID (eg "12345"). */ 2755 uid_t id = strtoul(cp, &end, 10); 2756 idmap_rid_t rid; 2757 char *mapdomain; 2758 2759 if (*end != '\0') 2760 return (EINVAL); 2761 if (id > MAXUID) { 2762 /* It's an ephemeral ID. */ 2763 if (idmap_id_to_numeric_domain_rid(id, isuser, 2764 &mapdomain, &rid) != 0) 2765 return (ENOENT); 2766 (void) strlcpy(domain, mapdomain, domainlen); 2767 *ridp = rid; 2768 } else { 2769 *ridp = id; 2770 } 2771 } 2772 2773 ASSERT3P(numericsid, ==, NULL); 2774 return (0); 2775 } 2776 2777 static int 2778 zfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname, 2779 uint64_t *propvalue, zfs_userquota_prop_t *typep) 2780 { 2781 int err; 2782 zfs_cmd_t zc = { 0 }; 2783 2784 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2785 2786 err = userquota_propname_decode(propname, 2787 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), 2788 typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid); 2789 zc.zc_objset_type = *typep; 2790 if (err) 2791 return (err); 2792 2793 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc); 2794 if (err) 2795 return (err); 2796 2797 *propvalue = zc.zc_cookie; 2798 return (0); 2799 } 2800 2801 int 2802 zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname, 2803 uint64_t *propvalue) 2804 { 2805 zfs_userquota_prop_t type; 2806 2807 return (zfs_prop_get_userquota_common(zhp, propname, propvalue, 2808 &type)); 2809 } 2810 2811 int 2812 zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname, 2813 char *propbuf, int proplen, boolean_t literal) 2814 { 2815 int err; 2816 uint64_t propvalue; 2817 zfs_userquota_prop_t type; 2818 2819 err = zfs_prop_get_userquota_common(zhp, propname, &propvalue, 2820 &type); 2821 2822 if (err) 2823 return (err); 2824 2825 if (literal) { 2826 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2827 } else if (propvalue == 0 && 2828 (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) { 2829 (void) strlcpy(propbuf, "none", proplen); 2830 } else { 2831 zfs_nicenum(propvalue, propbuf, proplen); 2832 } 2833 return (0); 2834 } 2835 2836 int 2837 zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname, 2838 uint64_t *propvalue) 2839 { 2840 int err; 2841 zfs_cmd_t zc = { 0 }; 2842 const char *snapname; 2843 2844 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 2845 2846 snapname = strchr(propname, '@') + 1; 2847 if (strchr(snapname, '@')) { 2848 (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); 2849 } else { 2850 /* snapname is the short name, append it to zhp's fsname */ 2851 char *cp; 2852 2853 (void) strlcpy(zc.zc_value, zhp->zfs_name, 2854 sizeof (zc.zc_value)); 2855 cp = strchr(zc.zc_value, '@'); 2856 if (cp != NULL) 2857 *cp = '\0'; 2858 (void) strlcat(zc.zc_value, "@", sizeof (zc.zc_value)); 2859 (void) strlcat(zc.zc_value, snapname, sizeof (zc.zc_value)); 2860 } 2861 2862 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SPACE_WRITTEN, &zc); 2863 if (err) 2864 return (err); 2865 2866 *propvalue = zc.zc_cookie; 2867 return (0); 2868 } 2869 2870 int 2871 zfs_prop_get_written(zfs_handle_t *zhp, const char *propname, 2872 char *propbuf, int proplen, boolean_t literal) 2873 { 2874 int err; 2875 uint64_t propvalue; 2876 2877 err = zfs_prop_get_written_int(zhp, propname, &propvalue); 2878 2879 if (err) 2880 return (err); 2881 2882 if (literal) { 2883 (void) snprintf(propbuf, proplen, "%llu", propvalue); 2884 } else { 2885 zfs_nicenum(propvalue, propbuf, proplen); 2886 } 2887 return (0); 2888 } 2889 2890 /* 2891 * Returns the name of the given zfs handle. 2892 */ 2893 const char * 2894 zfs_get_name(const zfs_handle_t *zhp) 2895 { 2896 return (zhp->zfs_name); 2897 } 2898 2899 /* 2900 * Returns the name of the parent pool for the given zfs handle. 2901 */ 2902 const char * 2903 zfs_get_pool_name(const zfs_handle_t *zhp) 2904 { 2905 return (zhp->zpool_hdl->zpool_name); 2906 } 2907 2908 /* 2909 * Returns the type of the given zfs handle. 2910 */ 2911 zfs_type_t 2912 zfs_get_type(const zfs_handle_t *zhp) 2913 { 2914 return (zhp->zfs_type); 2915 } 2916 2917 /* 2918 * Is one dataset name a child dataset of another? 2919 * 2920 * Needs to handle these cases: 2921 * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo" 2922 * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar" 2923 * Descendant? No. No. No. Yes. 2924 */ 2925 static boolean_t 2926 is_descendant(const char *ds1, const char *ds2) 2927 { 2928 size_t d1len = strlen(ds1); 2929 2930 /* ds2 can't be a descendant if it's smaller */ 2931 if (strlen(ds2) < d1len) 2932 return (B_FALSE); 2933 2934 /* otherwise, compare strings and verify that there's a '/' char */ 2935 return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0)); 2936 } 2937 2938 /* 2939 * Given a complete name, return just the portion that refers to the parent. 2940 * Will return -1 if there is no parent (path is just the name of the 2941 * pool). 2942 */ 2943 static int 2944 parent_name(const char *path, char *buf, size_t buflen) 2945 { 2946 char *slashp; 2947 2948 (void) strlcpy(buf, path, buflen); 2949 2950 if ((slashp = strrchr(buf, '/')) == NULL) 2951 return (-1); 2952 *slashp = '\0'; 2953 2954 return (0); 2955 } 2956 2957 /* 2958 * If accept_ancestor is false, then check to make sure that the given path has 2959 * a parent, and that it exists. If accept_ancestor is true, then find the 2960 * closest existing ancestor for the given path. In prefixlen return the 2961 * length of already existing prefix of the given path. We also fetch the 2962 * 'zoned' property, which is used to validate property settings when creating 2963 * new datasets. 2964 */ 2965 static int 2966 check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned, 2967 boolean_t accept_ancestor, int *prefixlen) 2968 { 2969 zfs_cmd_t zc = { 0 }; 2970 char parent[ZFS_MAX_DATASET_NAME_LEN]; 2971 char *slash; 2972 zfs_handle_t *zhp; 2973 char errbuf[1024]; 2974 uint64_t is_zoned; 2975 2976 (void) snprintf(errbuf, sizeof (errbuf), 2977 dgettext(TEXT_DOMAIN, "cannot create '%s'"), path); 2978 2979 /* get parent, and check to see if this is just a pool */ 2980 if (parent_name(path, parent, sizeof (parent)) != 0) { 2981 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2982 "missing dataset name")); 2983 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 2984 } 2985 2986 /* check to see if the pool exists */ 2987 if ((slash = strchr(parent, '/')) == NULL) 2988 slash = parent + strlen(parent); 2989 (void) strncpy(zc.zc_name, parent, slash - parent); 2990 zc.zc_name[slash - parent] = '\0'; 2991 if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 && 2992 errno == ENOENT) { 2993 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2994 "no such pool '%s'"), zc.zc_name); 2995 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 2996 } 2997 2998 /* check to see if the parent dataset exists */ 2999 while ((zhp = make_dataset_handle(hdl, parent)) == NULL) { 3000 if (errno == ENOENT && accept_ancestor) { 3001 /* 3002 * Go deeper to find an ancestor, give up on top level. 3003 */ 3004 if (parent_name(parent, parent, sizeof (parent)) != 0) { 3005 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3006 "no such pool '%s'"), zc.zc_name); 3007 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3008 } 3009 } else if (errno == ENOENT) { 3010 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3011 "parent does not exist")); 3012 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3013 } else 3014 return (zfs_standard_error(hdl, errno, errbuf)); 3015 } 3016 3017 is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 3018 if (zoned != NULL) 3019 *zoned = is_zoned; 3020 3021 /* we are in a non-global zone, but parent is in the global zone */ 3022 if (getzoneid() != GLOBAL_ZONEID && !is_zoned) { 3023 (void) zfs_standard_error(hdl, EPERM, errbuf); 3024 zfs_close(zhp); 3025 return (-1); 3026 } 3027 3028 /* make sure parent is a filesystem */ 3029 if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) { 3030 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3031 "parent is not a filesystem")); 3032 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 3033 zfs_close(zhp); 3034 return (-1); 3035 } 3036 3037 zfs_close(zhp); 3038 if (prefixlen != NULL) 3039 *prefixlen = strlen(parent); 3040 return (0); 3041 } 3042 3043 /* 3044 * Finds whether the dataset of the given type(s) exists. 3045 */ 3046 boolean_t 3047 zfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types) 3048 { 3049 zfs_handle_t *zhp; 3050 3051 if (!zfs_validate_name(hdl, path, types, B_FALSE)) 3052 return (B_FALSE); 3053 3054 /* 3055 * Try to get stats for the dataset, which will tell us if it exists. 3056 */ 3057 if ((zhp = make_dataset_handle(hdl, path)) != NULL) { 3058 int ds_type = zhp->zfs_type; 3059 3060 zfs_close(zhp); 3061 if (types & ds_type) 3062 return (B_TRUE); 3063 } 3064 return (B_FALSE); 3065 } 3066 3067 /* 3068 * Given a path to 'target', create all the ancestors between 3069 * the prefixlen portion of the path, and the target itself. 3070 * Fail if the initial prefixlen-ancestor does not already exist. 3071 */ 3072 int 3073 create_parents(libzfs_handle_t *hdl, char *target, int prefixlen) 3074 { 3075 zfs_handle_t *h; 3076 char *cp; 3077 const char *opname; 3078 3079 /* make sure prefix exists */ 3080 cp = target + prefixlen; 3081 if (*cp != '/') { 3082 assert(strchr(cp, '/') == NULL); 3083 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3084 } else { 3085 *cp = '\0'; 3086 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3087 *cp = '/'; 3088 } 3089 if (h == NULL) 3090 return (-1); 3091 zfs_close(h); 3092 3093 /* 3094 * Attempt to create, mount, and share any ancestor filesystems, 3095 * up to the prefixlen-long one. 3096 */ 3097 for (cp = target + prefixlen + 1; 3098 (cp = strchr(cp, '/')) != NULL; *cp = '/', cp++) { 3099 3100 *cp = '\0'; 3101 3102 h = make_dataset_handle(hdl, target); 3103 if (h) { 3104 /* it already exists, nothing to do here */ 3105 zfs_close(h); 3106 continue; 3107 } 3108 3109 if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM, 3110 NULL) != 0) { 3111 opname = dgettext(TEXT_DOMAIN, "create"); 3112 goto ancestorerr; 3113 } 3114 3115 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); 3116 if (h == NULL) { 3117 opname = dgettext(TEXT_DOMAIN, "open"); 3118 goto ancestorerr; 3119 } 3120 3121 if (zfs_mount(h, NULL, 0) != 0) { 3122 opname = dgettext(TEXT_DOMAIN, "mount"); 3123 goto ancestorerr; 3124 } 3125 3126 if (zfs_share(h) != 0) { 3127 opname = dgettext(TEXT_DOMAIN, "share"); 3128 goto ancestorerr; 3129 } 3130 3131 zfs_close(h); 3132 } 3133 3134 return (0); 3135 3136 ancestorerr: 3137 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3138 "failed to %s ancestor '%s'"), opname, target); 3139 return (-1); 3140 } 3141 3142 /* 3143 * Creates non-existing ancestors of the given path. 3144 */ 3145 int 3146 zfs_create_ancestors(libzfs_handle_t *hdl, const char *path) 3147 { 3148 int prefix; 3149 char *path_copy; 3150 int rc = 0; 3151 3152 if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0) 3153 return (-1); 3154 3155 if ((path_copy = strdup(path)) != NULL) { 3156 rc = create_parents(hdl, path_copy, prefix); 3157 free(path_copy); 3158 } 3159 if (path_copy == NULL || rc != 0) 3160 return (-1); 3161 3162 return (0); 3163 } 3164 3165 /* 3166 * Create a new filesystem or volume. 3167 */ 3168 int 3169 zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, 3170 nvlist_t *props) 3171 { 3172 int ret; 3173 uint64_t size = 0; 3174 uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE); 3175 char errbuf[1024]; 3176 uint64_t zoned; 3177 enum lzc_dataset_type ost; 3178 3179 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3180 "cannot create '%s'"), path); 3181 3182 /* validate the path, taking care to note the extended error message */ 3183 if (!zfs_validate_name(hdl, path, type, B_TRUE)) 3184 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3185 3186 /* validate parents exist */ 3187 if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0) 3188 return (-1); 3189 3190 /* 3191 * The failure modes when creating a dataset of a different type over 3192 * one that already exists is a little strange. In particular, if you 3193 * try to create a dataset on top of an existing dataset, the ioctl() 3194 * will return ENOENT, not EEXIST. To prevent this from happening, we 3195 * first try to see if the dataset exists. 3196 */ 3197 if (zfs_dataset_exists(hdl, path, ZFS_TYPE_DATASET)) { 3198 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3199 "dataset already exists")); 3200 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3201 } 3202 3203 if (type == ZFS_TYPE_VOLUME) 3204 ost = LZC_DATSET_TYPE_ZVOL; 3205 else 3206 ost = LZC_DATSET_TYPE_ZFS; 3207 3208 /* open zpool handle for prop validation */ 3209 char pool_path[ZFS_MAX_DATASET_NAME_LEN]; 3210 (void) strlcpy(pool_path, path, sizeof (pool_path)); 3211 3212 /* truncate pool_path at first slash */ 3213 char *p = strchr(pool_path, '/'); 3214 if (p != NULL) 3215 *p = '\0'; 3216 3217 zpool_handle_t *zpool_handle = zpool_open(hdl, pool_path); 3218 3219 if (props && (props = zfs_valid_proplist(hdl, type, props, 3220 zoned, NULL, zpool_handle, errbuf)) == 0) { 3221 zpool_close(zpool_handle); 3222 return (-1); 3223 } 3224 zpool_close(zpool_handle); 3225 3226 if (type == ZFS_TYPE_VOLUME) { 3227 /* 3228 * If we are creating a volume, the size and block size must 3229 * satisfy a few restraints. First, the blocksize must be a 3230 * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the 3231 * volsize must be a multiple of the block size, and cannot be 3232 * zero. 3233 */ 3234 if (props == NULL || nvlist_lookup_uint64(props, 3235 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) { 3236 nvlist_free(props); 3237 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3238 "missing volume size")); 3239 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3240 } 3241 3242 if ((ret = nvlist_lookup_uint64(props, 3243 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 3244 &blocksize)) != 0) { 3245 if (ret == ENOENT) { 3246 blocksize = zfs_prop_default_numeric( 3247 ZFS_PROP_VOLBLOCKSIZE); 3248 } else { 3249 nvlist_free(props); 3250 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3251 "missing volume block size")); 3252 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3253 } 3254 } 3255 3256 if (size == 0) { 3257 nvlist_free(props); 3258 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3259 "volume size cannot be zero")); 3260 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3261 } 3262 3263 if (size % blocksize != 0) { 3264 nvlist_free(props); 3265 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3266 "volume size must be a multiple of volume block " 3267 "size")); 3268 return (zfs_error(hdl, EZFS_BADPROP, errbuf)); 3269 } 3270 } 3271 3272 /* create the dataset */ 3273 ret = lzc_create(path, ost, props); 3274 nvlist_free(props); 3275 3276 /* check for failure */ 3277 if (ret != 0) { 3278 char parent[ZFS_MAX_DATASET_NAME_LEN]; 3279 (void) parent_name(path, parent, sizeof (parent)); 3280 3281 switch (errno) { 3282 case ENOENT: 3283 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3284 "no such parent '%s'"), parent); 3285 return (zfs_error(hdl, EZFS_NOENT, errbuf)); 3286 3287 case EINVAL: 3288 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3289 "parent '%s' is not a filesystem"), parent); 3290 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3291 3292 case ENOTSUP: 3293 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3294 "pool must be upgraded to set this " 3295 "property or value")); 3296 return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); 3297 #ifdef _ILP32 3298 case EOVERFLOW: 3299 /* 3300 * This platform can't address a volume this big. 3301 */ 3302 if (type == ZFS_TYPE_VOLUME) 3303 return (zfs_error(hdl, EZFS_VOLTOOBIG, 3304 errbuf)); 3305 #endif 3306 /* FALLTHROUGH */ 3307 default: 3308 return (zfs_standard_error(hdl, errno, errbuf)); 3309 } 3310 } 3311 3312 return (0); 3313 } 3314 3315 /* 3316 * Destroys the given dataset. The caller must make sure that the filesystem 3317 * isn't mounted, and that there are no active dependents. If the file system 3318 * does not exist this function does nothing. 3319 */ 3320 int 3321 zfs_destroy(zfs_handle_t *zhp, boolean_t defer) 3322 { 3323 zfs_cmd_t zc = { 0 }; 3324 3325 if (zhp->zfs_type == ZFS_TYPE_BOOKMARK) { 3326 nvlist_t *nv = fnvlist_alloc(); 3327 fnvlist_add_boolean(nv, zhp->zfs_name); 3328 int error = lzc_destroy_bookmarks(nv, NULL); 3329 fnvlist_free(nv); 3330 if (error != 0) { 3331 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3332 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3333 zhp->zfs_name)); 3334 } 3335 return (0); 3336 } 3337 3338 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3339 3340 if (ZFS_IS_VOLUME(zhp)) { 3341 zc.zc_objset_type = DMU_OST_ZVOL; 3342 } else { 3343 zc.zc_objset_type = DMU_OST_ZFS; 3344 } 3345 3346 zc.zc_defer_destroy = defer; 3347 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0 && 3348 errno != ENOENT) { 3349 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3350 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), 3351 zhp->zfs_name)); 3352 } 3353 3354 remove_mountpoint(zhp); 3355 3356 return (0); 3357 } 3358 3359 struct destroydata { 3360 nvlist_t *nvl; 3361 const char *snapname; 3362 }; 3363 3364 static int 3365 zfs_check_snap_cb(zfs_handle_t *zhp, void *arg) 3366 { 3367 struct destroydata *dd = arg; 3368 char name[ZFS_MAX_DATASET_NAME_LEN]; 3369 int rv = 0; 3370 3371 (void) snprintf(name, sizeof (name), 3372 "%s@%s", zhp->zfs_name, dd->snapname); 3373 3374 if (lzc_exists(name)) 3375 verify(nvlist_add_boolean(dd->nvl, name) == 0); 3376 3377 rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, dd); 3378 zfs_close(zhp); 3379 return (rv); 3380 } 3381 3382 /* 3383 * Destroys all snapshots with the given name in zhp & descendants. 3384 */ 3385 int 3386 zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer) 3387 { 3388 int ret; 3389 struct destroydata dd = { 0 }; 3390 3391 dd.snapname = snapname; 3392 verify(nvlist_alloc(&dd.nvl, NV_UNIQUE_NAME, 0) == 0); 3393 (void) zfs_check_snap_cb(zfs_handle_dup(zhp), &dd); 3394 3395 if (nvlist_empty(dd.nvl)) { 3396 ret = zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT, 3397 dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"), 3398 zhp->zfs_name, snapname); 3399 } else { 3400 ret = zfs_destroy_snaps_nvl(zhp->zfs_hdl, dd.nvl, defer); 3401 } 3402 nvlist_free(dd.nvl); 3403 return (ret); 3404 } 3405 3406 /* 3407 * Destroys all the snapshots named in the nvlist. 3408 */ 3409 int 3410 zfs_destroy_snaps_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, boolean_t defer) 3411 { 3412 int ret; 3413 nvlist_t *errlist = NULL; 3414 3415 ret = lzc_destroy_snaps(snaps, defer, &errlist); 3416 3417 if (ret == 0) { 3418 nvlist_free(errlist); 3419 return (0); 3420 } 3421 3422 if (nvlist_empty(errlist)) { 3423 char errbuf[1024]; 3424 (void) snprintf(errbuf, sizeof (errbuf), 3425 dgettext(TEXT_DOMAIN, "cannot destroy snapshots")); 3426 3427 ret = zfs_standard_error(hdl, ret, errbuf); 3428 } 3429 for (nvpair_t *pair = nvlist_next_nvpair(errlist, NULL); 3430 pair != NULL; pair = nvlist_next_nvpair(errlist, pair)) { 3431 char errbuf[1024]; 3432 (void) snprintf(errbuf, sizeof (errbuf), 3433 dgettext(TEXT_DOMAIN, "cannot destroy snapshot %s"), 3434 nvpair_name(pair)); 3435 3436 switch (fnvpair_value_int32(pair)) { 3437 case EEXIST: 3438 zfs_error_aux(hdl, 3439 dgettext(TEXT_DOMAIN, "snapshot is cloned")); 3440 ret = zfs_error(hdl, EZFS_EXISTS, errbuf); 3441 break; 3442 default: 3443 ret = zfs_standard_error(hdl, errno, errbuf); 3444 break; 3445 } 3446 } 3447 3448 nvlist_free(errlist); 3449 return (ret); 3450 } 3451 3452 /* 3453 * Clones the given dataset. The target must be of the same type as the source. 3454 */ 3455 int 3456 zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props) 3457 { 3458 char parent[ZFS_MAX_DATASET_NAME_LEN]; 3459 int ret; 3460 char errbuf[1024]; 3461 libzfs_handle_t *hdl = zhp->zfs_hdl; 3462 uint64_t zoned; 3463 3464 assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); 3465 3466 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3467 "cannot create '%s'"), target); 3468 3469 /* validate the target/clone name */ 3470 if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE)) 3471 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3472 3473 /* validate parents exist */ 3474 if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0) 3475 return (-1); 3476 3477 (void) parent_name(target, parent, sizeof (parent)); 3478 3479 /* do the clone */ 3480 3481 if (props) { 3482 zfs_type_t type; 3483 if (ZFS_IS_VOLUME(zhp)) { 3484 type = ZFS_TYPE_VOLUME; 3485 } else { 3486 type = ZFS_TYPE_FILESYSTEM; 3487 } 3488 if ((props = zfs_valid_proplist(hdl, type, props, zoned, 3489 zhp, zhp->zpool_hdl, errbuf)) == NULL) 3490 return (-1); 3491 } 3492 3493 ret = lzc_clone(target, zhp->zfs_name, props); 3494 nvlist_free(props); 3495 3496 if (ret != 0) { 3497 switch (errno) { 3498 3499 case ENOENT: 3500 /* 3501 * The parent doesn't exist. We should have caught this 3502 * above, but there may a race condition that has since 3503 * destroyed the parent. 3504 * 3505 * At this point, we don't know whether it's the source 3506 * that doesn't exist anymore, or whether the target 3507 * dataset doesn't exist. 3508 */ 3509 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3510 "no such parent '%s'"), parent); 3511 return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); 3512 3513 case EXDEV: 3514 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, 3515 "source and target pools differ")); 3516 return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET, 3517 errbuf)); 3518 3519 default: 3520 return (zfs_standard_error(zhp->zfs_hdl, errno, 3521 errbuf)); 3522 } 3523 } 3524 3525 return (ret); 3526 } 3527 3528 /* 3529 * Promotes the given clone fs to be the clone parent. 3530 */ 3531 int 3532 zfs_promote(zfs_handle_t *zhp) 3533 { 3534 libzfs_handle_t *hdl = zhp->zfs_hdl; 3535 zfs_cmd_t zc = { 0 }; 3536 char parent[MAXPATHLEN]; 3537 int ret; 3538 char errbuf[1024]; 3539 3540 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3541 "cannot promote '%s'"), zhp->zfs_name); 3542 3543 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3544 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3545 "snapshots can not be promoted")); 3546 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3547 } 3548 3549 (void) strlcpy(parent, zhp->zfs_dmustats.dds_origin, sizeof (parent)); 3550 if (parent[0] == '\0') { 3551 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3552 "not a cloned filesystem")); 3553 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3554 } 3555 3556 (void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_origin, 3557 sizeof (zc.zc_value)); 3558 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3559 ret = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); 3560 3561 if (ret != 0) { 3562 int save_errno = errno; 3563 3564 switch (save_errno) { 3565 case EEXIST: 3566 /* There is a conflicting snapshot name. */ 3567 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3568 "conflicting snapshot '%s' from parent '%s'"), 3569 zc.zc_string, parent); 3570 return (zfs_error(hdl, EZFS_EXISTS, errbuf)); 3571 3572 default: 3573 return (zfs_standard_error(hdl, save_errno, errbuf)); 3574 } 3575 } 3576 return (ret); 3577 } 3578 3579 typedef struct snapdata { 3580 nvlist_t *sd_nvl; 3581 const char *sd_snapname; 3582 } snapdata_t; 3583 3584 static int 3585 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg) 3586 { 3587 snapdata_t *sd = arg; 3588 char name[ZFS_MAX_DATASET_NAME_LEN]; 3589 int rv = 0; 3590 3591 if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) == 0) { 3592 (void) snprintf(name, sizeof (name), 3593 "%s@%s", zfs_get_name(zhp), sd->sd_snapname); 3594 3595 fnvlist_add_boolean(sd->sd_nvl, name); 3596 3597 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd); 3598 } 3599 zfs_close(zhp); 3600 3601 return (rv); 3602 } 3603 3604 /* 3605 * Creates snapshots. The keys in the snaps nvlist are the snapshots to be 3606 * created. 3607 */ 3608 int 3609 zfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, nvlist_t *props) 3610 { 3611 int ret; 3612 char errbuf[1024]; 3613 nvpair_t *elem; 3614 nvlist_t *errors; 3615 3616 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3617 "cannot create snapshots ")); 3618 3619 elem = NULL; 3620 while ((elem = nvlist_next_nvpair(snaps, elem)) != NULL) { 3621 const char *snapname = nvpair_name(elem); 3622 3623 /* validate the target name */ 3624 if (!zfs_validate_name(hdl, snapname, ZFS_TYPE_SNAPSHOT, 3625 B_TRUE)) { 3626 (void) snprintf(errbuf, sizeof (errbuf), 3627 dgettext(TEXT_DOMAIN, 3628 "cannot create snapshot '%s'"), snapname); 3629 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3630 } 3631 } 3632 3633 /* 3634 * get pool handle for prop validation. assumes all snaps are in the 3635 * same pool, as does lzc_snapshot (below). 3636 */ 3637 char pool[ZFS_MAX_DATASET_NAME_LEN]; 3638 elem = nvlist_next_nvpair(snaps, NULL); 3639 (void) strlcpy(pool, nvpair_name(elem), sizeof (pool)); 3640 pool[strcspn(pool, "/@")] = '\0'; 3641 zpool_handle_t *zpool_hdl = zpool_open(hdl, pool); 3642 3643 if (props != NULL && 3644 (props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT, 3645 props, B_FALSE, NULL, zpool_hdl, errbuf)) == NULL) { 3646 zpool_close(zpool_hdl); 3647 return (-1); 3648 } 3649 zpool_close(zpool_hdl); 3650 3651 ret = lzc_snapshot(snaps, props, &errors); 3652 3653 if (ret != 0) { 3654 boolean_t printed = B_FALSE; 3655 for (elem = nvlist_next_nvpair(errors, NULL); 3656 elem != NULL; 3657 elem = nvlist_next_nvpair(errors, elem)) { 3658 (void) snprintf(errbuf, sizeof (errbuf), 3659 dgettext(TEXT_DOMAIN, 3660 "cannot create snapshot '%s'"), nvpair_name(elem)); 3661 (void) zfs_standard_error(hdl, 3662 fnvpair_value_int32(elem), errbuf); 3663 printed = B_TRUE; 3664 } 3665 if (!printed) { 3666 switch (ret) { 3667 case EXDEV: 3668 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3669 "multiple snapshots of same " 3670 "fs not allowed")); 3671 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 3672 3673 break; 3674 default: 3675 (void) zfs_standard_error(hdl, ret, errbuf); 3676 } 3677 } 3678 } 3679 3680 nvlist_free(props); 3681 nvlist_free(errors); 3682 return (ret); 3683 } 3684 3685 int 3686 zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive, 3687 nvlist_t *props) 3688 { 3689 int ret; 3690 snapdata_t sd = { 0 }; 3691 char fsname[ZFS_MAX_DATASET_NAME_LEN]; 3692 char *cp; 3693 zfs_handle_t *zhp; 3694 char errbuf[1024]; 3695 3696 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3697 "cannot snapshot %s"), path); 3698 3699 if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE)) 3700 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3701 3702 (void) strlcpy(fsname, path, sizeof (fsname)); 3703 cp = strchr(fsname, '@'); 3704 *cp = '\0'; 3705 sd.sd_snapname = cp + 1; 3706 3707 if ((zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM | 3708 ZFS_TYPE_VOLUME)) == NULL) { 3709 return (-1); 3710 } 3711 3712 verify(nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) == 0); 3713 if (recursive) { 3714 (void) zfs_snapshot_cb(zfs_handle_dup(zhp), &sd); 3715 } else { 3716 fnvlist_add_boolean(sd.sd_nvl, path); 3717 } 3718 3719 ret = zfs_snapshot_nvl(hdl, sd.sd_nvl, props); 3720 nvlist_free(sd.sd_nvl); 3721 zfs_close(zhp); 3722 return (ret); 3723 } 3724 3725 /* 3726 * Destroy any more recent snapshots. We invoke this callback on any dependents 3727 * of the snapshot first. If the 'cb_dependent' member is non-zero, then this 3728 * is a dependent and we should just destroy it without checking the transaction 3729 * group. 3730 */ 3731 typedef struct rollback_data { 3732 const char *cb_target; /* the snapshot */ 3733 uint64_t cb_create; /* creation time reference */ 3734 boolean_t cb_error; 3735 boolean_t cb_force; 3736 } rollback_data_t; 3737 3738 static int 3739 rollback_destroy_dependent(zfs_handle_t *zhp, void *data) 3740 { 3741 rollback_data_t *cbp = data; 3742 prop_changelist_t *clp; 3743 3744 /* We must destroy this clone; first unmount it */ 3745 clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, 3746 cbp->cb_force ? MS_FORCE: 0); 3747 if (clp == NULL || changelist_prefix(clp) != 0) { 3748 cbp->cb_error = B_TRUE; 3749 zfs_close(zhp); 3750 return (0); 3751 } 3752 if (zfs_destroy(zhp, B_FALSE) != 0) 3753 cbp->cb_error = B_TRUE; 3754 else 3755 changelist_remove(clp, zhp->zfs_name); 3756 (void) changelist_postfix(clp); 3757 changelist_free(clp); 3758 3759 zfs_close(zhp); 3760 return (0); 3761 } 3762 3763 static int 3764 rollback_destroy(zfs_handle_t *zhp, void *data) 3765 { 3766 rollback_data_t *cbp = data; 3767 3768 if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) { 3769 cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE, 3770 rollback_destroy_dependent, cbp); 3771 3772 cbp->cb_error |= zfs_destroy(zhp, B_FALSE); 3773 } 3774 3775 zfs_close(zhp); 3776 return (0); 3777 } 3778 3779 /* 3780 * Given a dataset, rollback to a specific snapshot, discarding any 3781 * data changes since then and making it the active dataset. 3782 * 3783 * Any snapshots and bookmarks more recent than the target are 3784 * destroyed, along with their dependents (i.e. clones). 3785 */ 3786 int 3787 zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) 3788 { 3789 rollback_data_t cb = { 0 }; 3790 int err; 3791 boolean_t restore_resv = 0; 3792 uint64_t old_volsize = 0, new_volsize; 3793 zfs_prop_t resv_prop; 3794 3795 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM || 3796 zhp->zfs_type == ZFS_TYPE_VOLUME); 3797 3798 /* 3799 * Destroy all recent snapshots and their dependents. 3800 */ 3801 cb.cb_force = force; 3802 cb.cb_target = snap->zfs_name; 3803 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 3804 (void) zfs_iter_snapshots(zhp, B_FALSE, rollback_destroy, &cb); 3805 (void) zfs_iter_bookmarks(zhp, rollback_destroy, &cb); 3806 3807 if (cb.cb_error) 3808 return (-1); 3809 3810 /* 3811 * Now that we have verified that the snapshot is the latest, 3812 * rollback to the given snapshot. 3813 */ 3814 3815 if (zhp->zfs_type == ZFS_TYPE_VOLUME) { 3816 if (zfs_which_resv_prop(zhp, &resv_prop) < 0) 3817 return (-1); 3818 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3819 restore_resv = 3820 (old_volsize == zfs_prop_get_int(zhp, resv_prop)); 3821 } 3822 3823 /* 3824 * We rely on zfs_iter_children() to verify that there are no 3825 * newer snapshots for the given dataset. Therefore, we can 3826 * simply pass the name on to the ioctl() call. There is still 3827 * an unlikely race condition where the user has taken a 3828 * snapshot since we verified that this was the most recent. 3829 */ 3830 err = lzc_rollback(zhp->zfs_name, NULL, 0); 3831 if (err != 0) { 3832 (void) zfs_standard_error_fmt(zhp->zfs_hdl, errno, 3833 dgettext(TEXT_DOMAIN, "cannot rollback '%s'"), 3834 zhp->zfs_name); 3835 return (err); 3836 } 3837 3838 /* 3839 * For volumes, if the pre-rollback volsize matched the pre- 3840 * rollback reservation and the volsize has changed then set 3841 * the reservation property to the post-rollback volsize. 3842 * Make a new handle since the rollback closed the dataset. 3843 */ 3844 if ((zhp->zfs_type == ZFS_TYPE_VOLUME) && 3845 (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) { 3846 if (restore_resv) { 3847 new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); 3848 if (old_volsize != new_volsize) 3849 err = zfs_prop_set_int(zhp, resv_prop, 3850 new_volsize); 3851 } 3852 zfs_close(zhp); 3853 } 3854 return (err); 3855 } 3856 3857 /* 3858 * Renames the given dataset. 3859 */ 3860 int 3861 zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive, 3862 boolean_t force_unmount) 3863 { 3864 int ret = 0; 3865 zfs_cmd_t zc = { 0 }; 3866 char *delim; 3867 prop_changelist_t *cl = NULL; 3868 zfs_handle_t *zhrp = NULL; 3869 char *parentname = NULL; 3870 char parent[ZFS_MAX_DATASET_NAME_LEN]; 3871 libzfs_handle_t *hdl = zhp->zfs_hdl; 3872 char errbuf[1024]; 3873 3874 /* if we have the same exact name, just return success */ 3875 if (strcmp(zhp->zfs_name, target) == 0) 3876 return (0); 3877 3878 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3879 "cannot rename to '%s'"), target); 3880 3881 /* 3882 * Make sure the target name is valid 3883 */ 3884 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { 3885 if ((strchr(target, '@') == NULL) || 3886 *target == '@') { 3887 /* 3888 * Snapshot target name is abbreviated, 3889 * reconstruct full dataset name 3890 */ 3891 (void) strlcpy(parent, zhp->zfs_name, 3892 sizeof (parent)); 3893 delim = strchr(parent, '@'); 3894 if (strchr(target, '@') == NULL) 3895 *(++delim) = '\0'; 3896 else 3897 *delim = '\0'; 3898 (void) strlcat(parent, target, sizeof (parent)); 3899 target = parent; 3900 } else { 3901 /* 3902 * Make sure we're renaming within the same dataset. 3903 */ 3904 delim = strchr(target, '@'); 3905 if (strncmp(zhp->zfs_name, target, delim - target) 3906 != 0 || zhp->zfs_name[delim - target] != '@') { 3907 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3908 "snapshots must be part of same " 3909 "dataset")); 3910 return (zfs_error(hdl, EZFS_CROSSTARGET, 3911 errbuf)); 3912 } 3913 } 3914 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3915 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3916 } else { 3917 if (recursive) { 3918 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3919 "recursive rename must be a snapshot")); 3920 return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); 3921 } 3922 3923 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) 3924 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3925 3926 /* validate parents */ 3927 if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0) 3928 return (-1); 3929 3930 /* make sure we're in the same pool */ 3931 verify((delim = strchr(target, '/')) != NULL); 3932 if (strncmp(zhp->zfs_name, target, delim - target) != 0 || 3933 zhp->zfs_name[delim - target] != '/') { 3934 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3935 "datasets must be within same pool")); 3936 return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); 3937 } 3938 3939 /* new name cannot be a child of the current dataset name */ 3940 if (is_descendant(zhp->zfs_name, target)) { 3941 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3942 "New dataset name cannot be a descendant of " 3943 "current dataset name")); 3944 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); 3945 } 3946 } 3947 3948 (void) snprintf(errbuf, sizeof (errbuf), 3949 dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name); 3950 3951 if (getzoneid() == GLOBAL_ZONEID && 3952 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { 3953 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3954 "dataset is used in a non-global zone")); 3955 return (zfs_error(hdl, EZFS_ZONED, errbuf)); 3956 } 3957 3958 if (recursive) { 3959 parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name); 3960 if (parentname == NULL) { 3961 ret = -1; 3962 goto error; 3963 } 3964 delim = strchr(parentname, '@'); 3965 *delim = '\0'; 3966 zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET); 3967 if (zhrp == NULL) { 3968 ret = -1; 3969 goto error; 3970 } 3971 } else if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) { 3972 if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 0, 3973 force_unmount ? MS_FORCE : 0)) == NULL) 3974 return (-1); 3975 3976 if (changelist_haszonedchild(cl)) { 3977 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3978 "child dataset with inherited mountpoint is used " 3979 "in a non-global zone")); 3980 (void) zfs_error(hdl, EZFS_ZONED, errbuf); 3981 ret = -1; 3982 goto error; 3983 } 3984 3985 if ((ret = changelist_prefix(cl)) != 0) 3986 goto error; 3987 } 3988 3989 if (ZFS_IS_VOLUME(zhp)) 3990 zc.zc_objset_type = DMU_OST_ZVOL; 3991 else 3992 zc.zc_objset_type = DMU_OST_ZFS; 3993 3994 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 3995 (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value)); 3996 3997 zc.zc_cookie = recursive; 3998 3999 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) { 4000 /* 4001 * if it was recursive, the one that actually failed will 4002 * be in zc.zc_name 4003 */ 4004 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4005 "cannot rename '%s'"), zc.zc_name); 4006 4007 if (recursive && errno == EEXIST) { 4008 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4009 "a child dataset already has a snapshot " 4010 "with the new name")); 4011 (void) zfs_error(hdl, EZFS_EXISTS, errbuf); 4012 } else { 4013 (void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf); 4014 } 4015 4016 /* 4017 * On failure, we still want to remount any filesystems that 4018 * were previously mounted, so we don't alter the system state. 4019 */ 4020 if (cl != NULL) 4021 (void) changelist_postfix(cl); 4022 } else { 4023 if (cl != NULL) { 4024 changelist_rename(cl, zfs_get_name(zhp), target); 4025 ret = changelist_postfix(cl); 4026 } 4027 } 4028 4029 error: 4030 if (parentname != NULL) { 4031 free(parentname); 4032 } 4033 if (zhrp != NULL) { 4034 zfs_close(zhrp); 4035 } 4036 if (cl != NULL) { 4037 changelist_free(cl); 4038 } 4039 return (ret); 4040 } 4041 4042 nvlist_t * 4043 zfs_get_user_props(zfs_handle_t *zhp) 4044 { 4045 return (zhp->zfs_user_props); 4046 } 4047 4048 nvlist_t * 4049 zfs_get_recvd_props(zfs_handle_t *zhp) 4050 { 4051 if (zhp->zfs_recvd_props == NULL) 4052 if (get_recvd_props_ioctl(zhp) != 0) 4053 return (NULL); 4054 return (zhp->zfs_recvd_props); 4055 } 4056 4057 /* 4058 * This function is used by 'zfs list' to determine the exact set of columns to 4059 * display, and their maximum widths. This does two main things: 4060 * 4061 * - If this is a list of all properties, then expand the list to include 4062 * all native properties, and set a flag so that for each dataset we look 4063 * for new unique user properties and add them to the list. 4064 * 4065 * - For non fixed-width properties, keep track of the maximum width seen 4066 * so that we can size the column appropriately. If the user has 4067 * requested received property values, we also need to compute the width 4068 * of the RECEIVED column. 4069 */ 4070 int 4071 zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received, 4072 boolean_t literal) 4073 { 4074 libzfs_handle_t *hdl = zhp->zfs_hdl; 4075 zprop_list_t *entry; 4076 zprop_list_t **last, **start; 4077 nvlist_t *userprops, *propval; 4078 nvpair_t *elem; 4079 char *strval; 4080 char buf[ZFS_MAXPROPLEN]; 4081 4082 if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0) 4083 return (-1); 4084 4085 userprops = zfs_get_user_props(zhp); 4086 4087 entry = *plp; 4088 if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) { 4089 /* 4090 * Go through and add any user properties as necessary. We 4091 * start by incrementing our list pointer to the first 4092 * non-native property. 4093 */ 4094 start = plp; 4095 while (*start != NULL) { 4096 if ((*start)->pl_prop == ZPROP_INVAL) 4097 break; 4098 start = &(*start)->pl_next; 4099 } 4100 4101 elem = NULL; 4102 while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) { 4103 /* 4104 * See if we've already found this property in our list. 4105 */ 4106 for (last = start; *last != NULL; 4107 last = &(*last)->pl_next) { 4108 if (strcmp((*last)->pl_user_prop, 4109 nvpair_name(elem)) == 0) 4110 break; 4111 } 4112 4113 if (*last == NULL) { 4114 if ((entry = zfs_alloc(hdl, 4115 sizeof (zprop_list_t))) == NULL || 4116 ((entry->pl_user_prop = zfs_strdup(hdl, 4117 nvpair_name(elem)))) == NULL) { 4118 free(entry); 4119 return (-1); 4120 } 4121 4122 entry->pl_prop = ZPROP_INVAL; 4123 entry->pl_width = strlen(nvpair_name(elem)); 4124 entry->pl_all = B_TRUE; 4125 *last = entry; 4126 } 4127 } 4128 } 4129 4130 /* 4131 * Now go through and check the width of any non-fixed columns 4132 */ 4133 for (entry = *plp; entry != NULL; entry = entry->pl_next) { 4134 if (entry->pl_fixed && !literal) 4135 continue; 4136 4137 if (entry->pl_prop != ZPROP_INVAL) { 4138 if (zfs_prop_get(zhp, entry->pl_prop, 4139 buf, sizeof (buf), NULL, NULL, 0, literal) == 0) { 4140 if (strlen(buf) > entry->pl_width) 4141 entry->pl_width = strlen(buf); 4142 } 4143 if (received && zfs_prop_get_recvd(zhp, 4144 zfs_prop_to_name(entry->pl_prop), 4145 buf, sizeof (buf), literal) == 0) 4146 if (strlen(buf) > entry->pl_recvd_width) 4147 entry->pl_recvd_width = strlen(buf); 4148 } else { 4149 if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop, 4150 &propval) == 0) { 4151 verify(nvlist_lookup_string(propval, 4152 ZPROP_VALUE, &strval) == 0); 4153 if (strlen(strval) > entry->pl_width) 4154 entry->pl_width = strlen(strval); 4155 } 4156 if (received && zfs_prop_get_recvd(zhp, 4157 entry->pl_user_prop, 4158 buf, sizeof (buf), literal) == 0) 4159 if (strlen(buf) > entry->pl_recvd_width) 4160 entry->pl_recvd_width = strlen(buf); 4161 } 4162 } 4163 4164 return (0); 4165 } 4166 4167 int 4168 zfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path, 4169 char *resource, void *export, void *sharetab, 4170 int sharemax, zfs_share_op_t operation) 4171 { 4172 zfs_cmd_t zc = { 0 }; 4173 int error; 4174 4175 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4176 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4177 if (resource) 4178 (void) strlcpy(zc.zc_string, resource, sizeof (zc.zc_string)); 4179 zc.zc_share.z_sharedata = (uint64_t)(uintptr_t)sharetab; 4180 zc.zc_share.z_exportdata = (uint64_t)(uintptr_t)export; 4181 zc.zc_share.z_sharetype = operation; 4182 zc.zc_share.z_sharemax = sharemax; 4183 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SHARE, &zc); 4184 return (error); 4185 } 4186 4187 void 4188 zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props) 4189 { 4190 nvpair_t *curr; 4191 4192 /* 4193 * Keep a reference to the props-table against which we prune the 4194 * properties. 4195 */ 4196 zhp->zfs_props_table = props; 4197 4198 curr = nvlist_next_nvpair(zhp->zfs_props, NULL); 4199 4200 while (curr) { 4201 zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr)); 4202 nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr); 4203 4204 /* 4205 * User properties will result in ZPROP_INVAL, and since we 4206 * only know how to prune standard ZFS properties, we always 4207 * leave these in the list. This can also happen if we 4208 * encounter an unknown DSL property (when running older 4209 * software, for example). 4210 */ 4211 if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE) 4212 (void) nvlist_remove(zhp->zfs_props, 4213 nvpair_name(curr), nvpair_type(curr)); 4214 curr = next; 4215 } 4216 } 4217 4218 static int 4219 zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path, 4220 zfs_smb_acl_op_t cmd, char *resource1, char *resource2) 4221 { 4222 zfs_cmd_t zc = { 0 }; 4223 nvlist_t *nvlist = NULL; 4224 int error; 4225 4226 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); 4227 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); 4228 zc.zc_cookie = (uint64_t)cmd; 4229 4230 if (cmd == ZFS_SMB_ACL_RENAME) { 4231 if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) { 4232 (void) no_memory(hdl); 4233 return (0); 4234 } 4235 } 4236 4237 switch (cmd) { 4238 case ZFS_SMB_ACL_ADD: 4239 case ZFS_SMB_ACL_REMOVE: 4240 (void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string)); 4241 break; 4242 case ZFS_SMB_ACL_RENAME: 4243 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC, 4244 resource1) != 0) { 4245 (void) no_memory(hdl); 4246 return (-1); 4247 } 4248 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET, 4249 resource2) != 0) { 4250 (void) no_memory(hdl); 4251 return (-1); 4252 } 4253 if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) { 4254 nvlist_free(nvlist); 4255 return (-1); 4256 } 4257 break; 4258 case ZFS_SMB_ACL_PURGE: 4259 break; 4260 default: 4261 return (-1); 4262 } 4263 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc); 4264 nvlist_free(nvlist); 4265 return (error); 4266 } 4267 4268 int 4269 zfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset, 4270 char *path, char *resource) 4271 { 4272 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD, 4273 resource, NULL)); 4274 } 4275 4276 int 4277 zfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset, 4278 char *path, char *resource) 4279 { 4280 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE, 4281 resource, NULL)); 4282 } 4283 4284 int 4285 zfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path) 4286 { 4287 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE, 4288 NULL, NULL)); 4289 } 4290 4291 int 4292 zfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path, 4293 char *oldname, char *newname) 4294 { 4295 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME, 4296 oldname, newname)); 4297 } 4298 4299 int 4300 zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type, 4301 zfs_userspace_cb_t func, void *arg) 4302 { 4303 zfs_cmd_t zc = { 0 }; 4304 zfs_useracct_t buf[100]; 4305 libzfs_handle_t *hdl = zhp->zfs_hdl; 4306 int ret; 4307 4308 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4309 4310 zc.zc_objset_type = type; 4311 zc.zc_nvlist_dst = (uintptr_t)buf; 4312 4313 for (;;) { 4314 zfs_useracct_t *zua = buf; 4315 4316 zc.zc_nvlist_dst_size = sizeof (buf); 4317 if (zfs_ioctl(hdl, ZFS_IOC_USERSPACE_MANY, &zc) != 0) { 4318 char errbuf[1024]; 4319 4320 (void) snprintf(errbuf, sizeof (errbuf), 4321 dgettext(TEXT_DOMAIN, 4322 "cannot get used/quota for %s"), zc.zc_name); 4323 return (zfs_standard_error_fmt(hdl, errno, errbuf)); 4324 } 4325 if (zc.zc_nvlist_dst_size == 0) 4326 break; 4327 4328 while (zc.zc_nvlist_dst_size > 0) { 4329 if ((ret = func(arg, zua->zu_domain, zua->zu_rid, 4330 zua->zu_space)) != 0) 4331 return (ret); 4332 zua++; 4333 zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t); 4334 } 4335 } 4336 4337 return (0); 4338 } 4339 4340 struct holdarg { 4341 nvlist_t *nvl; 4342 const char *snapname; 4343 const char *tag; 4344 boolean_t recursive; 4345 int error; 4346 }; 4347 4348 static int 4349 zfs_hold_one(zfs_handle_t *zhp, void *arg) 4350 { 4351 struct holdarg *ha = arg; 4352 char name[ZFS_MAX_DATASET_NAME_LEN]; 4353 int rv = 0; 4354 4355 (void) snprintf(name, sizeof (name), 4356 "%s@%s", zhp->zfs_name, ha->snapname); 4357 4358 if (lzc_exists(name)) 4359 fnvlist_add_string(ha->nvl, name, ha->tag); 4360 4361 if (ha->recursive) 4362 rv = zfs_iter_filesystems(zhp, zfs_hold_one, ha); 4363 zfs_close(zhp); 4364 return (rv); 4365 } 4366 4367 int 4368 zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag, 4369 boolean_t recursive, int cleanup_fd) 4370 { 4371 int ret; 4372 struct holdarg ha; 4373 4374 ha.nvl = fnvlist_alloc(); 4375 ha.snapname = snapname; 4376 ha.tag = tag; 4377 ha.recursive = recursive; 4378 (void) zfs_hold_one(zfs_handle_dup(zhp), &ha); 4379 4380 if (nvlist_empty(ha.nvl)) { 4381 char errbuf[1024]; 4382 4383 fnvlist_free(ha.nvl); 4384 ret = ENOENT; 4385 (void) snprintf(errbuf, sizeof (errbuf), 4386 dgettext(TEXT_DOMAIN, 4387 "cannot hold snapshot '%s@%s'"), 4388 zhp->zfs_name, snapname); 4389 (void) zfs_standard_error(zhp->zfs_hdl, ret, errbuf); 4390 return (ret); 4391 } 4392 4393 ret = zfs_hold_nvl(zhp, cleanup_fd, ha.nvl); 4394 fnvlist_free(ha.nvl); 4395 4396 return (ret); 4397 } 4398 4399 int 4400 zfs_hold_nvl(zfs_handle_t *zhp, int cleanup_fd, nvlist_t *holds) 4401 { 4402 int ret; 4403 nvlist_t *errors; 4404 libzfs_handle_t *hdl = zhp->zfs_hdl; 4405 char errbuf[1024]; 4406 nvpair_t *elem; 4407 4408 errors = NULL; 4409 ret = lzc_hold(holds, cleanup_fd, &errors); 4410 4411 if (ret == 0) { 4412 /* There may be errors even in the success case. */ 4413 fnvlist_free(errors); 4414 return (0); 4415 } 4416 4417 if (nvlist_empty(errors)) { 4418 /* no hold-specific errors */ 4419 (void) snprintf(errbuf, sizeof (errbuf), 4420 dgettext(TEXT_DOMAIN, "cannot hold")); 4421 switch (ret) { 4422 case ENOTSUP: 4423 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4424 "pool must be upgraded")); 4425 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4426 break; 4427 case EINVAL: 4428 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4429 break; 4430 default: 4431 (void) zfs_standard_error(hdl, ret, errbuf); 4432 } 4433 } 4434 4435 for (elem = nvlist_next_nvpair(errors, NULL); 4436 elem != NULL; 4437 elem = nvlist_next_nvpair(errors, elem)) { 4438 (void) snprintf(errbuf, sizeof (errbuf), 4439 dgettext(TEXT_DOMAIN, 4440 "cannot hold snapshot '%s'"), nvpair_name(elem)); 4441 switch (fnvpair_value_int32(elem)) { 4442 case E2BIG: 4443 /* 4444 * Temporary tags wind up having the ds object id 4445 * prepended. So even if we passed the length check 4446 * above, it's still possible for the tag to wind 4447 * up being slightly too long. 4448 */ 4449 (void) zfs_error(hdl, EZFS_TAGTOOLONG, errbuf); 4450 break; 4451 case EINVAL: 4452 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4453 break; 4454 case EEXIST: 4455 (void) zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf); 4456 break; 4457 default: 4458 (void) zfs_standard_error(hdl, 4459 fnvpair_value_int32(elem), errbuf); 4460 } 4461 } 4462 4463 fnvlist_free(errors); 4464 return (ret); 4465 } 4466 4467 static int 4468 zfs_release_one(zfs_handle_t *zhp, void *arg) 4469 { 4470 struct holdarg *ha = arg; 4471 char name[ZFS_MAX_DATASET_NAME_LEN]; 4472 int rv = 0; 4473 nvlist_t *existing_holds; 4474 4475 (void) snprintf(name, sizeof (name), 4476 "%s@%s", zhp->zfs_name, ha->snapname); 4477 4478 if (lzc_get_holds(name, &existing_holds) != 0) { 4479 ha->error = ENOENT; 4480 } else if (!nvlist_exists(existing_holds, ha->tag)) { 4481 ha->error = ESRCH; 4482 } else { 4483 nvlist_t *torelease = fnvlist_alloc(); 4484 fnvlist_add_boolean(torelease, ha->tag); 4485 fnvlist_add_nvlist(ha->nvl, name, torelease); 4486 fnvlist_free(torelease); 4487 } 4488 4489 if (ha->recursive) 4490 rv = zfs_iter_filesystems(zhp, zfs_release_one, ha); 4491 zfs_close(zhp); 4492 return (rv); 4493 } 4494 4495 int 4496 zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag, 4497 boolean_t recursive) 4498 { 4499 int ret; 4500 struct holdarg ha; 4501 nvlist_t *errors = NULL; 4502 nvpair_t *elem; 4503 libzfs_handle_t *hdl = zhp->zfs_hdl; 4504 char errbuf[1024]; 4505 4506 ha.nvl = fnvlist_alloc(); 4507 ha.snapname = snapname; 4508 ha.tag = tag; 4509 ha.recursive = recursive; 4510 ha.error = 0; 4511 (void) zfs_release_one(zfs_handle_dup(zhp), &ha); 4512 4513 if (nvlist_empty(ha.nvl)) { 4514 fnvlist_free(ha.nvl); 4515 ret = ha.error; 4516 (void) snprintf(errbuf, sizeof (errbuf), 4517 dgettext(TEXT_DOMAIN, 4518 "cannot release hold from snapshot '%s@%s'"), 4519 zhp->zfs_name, snapname); 4520 if (ret == ESRCH) { 4521 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4522 } else { 4523 (void) zfs_standard_error(hdl, ret, errbuf); 4524 } 4525 return (ret); 4526 } 4527 4528 ret = lzc_release(ha.nvl, &errors); 4529 fnvlist_free(ha.nvl); 4530 4531 if (ret == 0) { 4532 /* There may be errors even in the success case. */ 4533 fnvlist_free(errors); 4534 return (0); 4535 } 4536 4537 if (nvlist_empty(errors)) { 4538 /* no hold-specific errors */ 4539 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4540 "cannot release")); 4541 switch (errno) { 4542 case ENOTSUP: 4543 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4544 "pool must be upgraded")); 4545 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 4546 break; 4547 default: 4548 (void) zfs_standard_error_fmt(hdl, errno, errbuf); 4549 } 4550 } 4551 4552 for (elem = nvlist_next_nvpair(errors, NULL); 4553 elem != NULL; 4554 elem = nvlist_next_nvpair(errors, elem)) { 4555 (void) snprintf(errbuf, sizeof (errbuf), 4556 dgettext(TEXT_DOMAIN, 4557 "cannot release hold from snapshot '%s'"), 4558 nvpair_name(elem)); 4559 switch (fnvpair_value_int32(elem)) { 4560 case ESRCH: 4561 (void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf); 4562 break; 4563 case EINVAL: 4564 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); 4565 break; 4566 default: 4567 (void) zfs_standard_error_fmt(hdl, 4568 fnvpair_value_int32(elem), errbuf); 4569 } 4570 } 4571 4572 fnvlist_free(errors); 4573 return (ret); 4574 } 4575 4576 int 4577 zfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl) 4578 { 4579 zfs_cmd_t zc = { 0 }; 4580 libzfs_handle_t *hdl = zhp->zfs_hdl; 4581 int nvsz = 2048; 4582 void *nvbuf; 4583 int err = 0; 4584 char errbuf[1024]; 4585 4586 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4587 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4588 4589 tryagain: 4590 4591 nvbuf = malloc(nvsz); 4592 if (nvbuf == NULL) { 4593 err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno))); 4594 goto out; 4595 } 4596 4597 zc.zc_nvlist_dst_size = nvsz; 4598 zc.zc_nvlist_dst = (uintptr_t)nvbuf; 4599 4600 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4601 4602 if (ioctl(hdl->libzfs_fd, ZFS_IOC_GET_FSACL, &zc) != 0) { 4603 (void) snprintf(errbuf, sizeof (errbuf), 4604 dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"), 4605 zc.zc_name); 4606 switch (errno) { 4607 case ENOMEM: 4608 free(nvbuf); 4609 nvsz = zc.zc_nvlist_dst_size; 4610 goto tryagain; 4611 4612 case ENOTSUP: 4613 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4614 "pool must be upgraded")); 4615 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4616 break; 4617 case EINVAL: 4618 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4619 break; 4620 case ENOENT: 4621 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4622 break; 4623 default: 4624 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4625 break; 4626 } 4627 } else { 4628 /* success */ 4629 int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0); 4630 if (rc) { 4631 (void) snprintf(errbuf, sizeof (errbuf), dgettext( 4632 TEXT_DOMAIN, "cannot get permissions on '%s'"), 4633 zc.zc_name); 4634 err = zfs_standard_error_fmt(hdl, rc, errbuf); 4635 } 4636 } 4637 4638 free(nvbuf); 4639 out: 4640 return (err); 4641 } 4642 4643 int 4644 zfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl) 4645 { 4646 zfs_cmd_t zc = { 0 }; 4647 libzfs_handle_t *hdl = zhp->zfs_hdl; 4648 char *nvbuf; 4649 char errbuf[1024]; 4650 size_t nvsz; 4651 int err; 4652 4653 assert(zhp->zfs_type == ZFS_TYPE_VOLUME || 4654 zhp->zfs_type == ZFS_TYPE_FILESYSTEM); 4655 4656 err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE); 4657 assert(err == 0); 4658 4659 nvbuf = malloc(nvsz); 4660 4661 err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0); 4662 assert(err == 0); 4663 4664 zc.zc_nvlist_src_size = nvsz; 4665 zc.zc_nvlist_src = (uintptr_t)nvbuf; 4666 zc.zc_perm_action = un; 4667 4668 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); 4669 4670 if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) { 4671 (void) snprintf(errbuf, sizeof (errbuf), 4672 dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"), 4673 zc.zc_name); 4674 switch (errno) { 4675 case ENOTSUP: 4676 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4677 "pool must be upgraded")); 4678 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4679 break; 4680 case EINVAL: 4681 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4682 break; 4683 case ENOENT: 4684 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4685 break; 4686 default: 4687 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4688 break; 4689 } 4690 } 4691 4692 free(nvbuf); 4693 4694 return (err); 4695 } 4696 4697 int 4698 zfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl) 4699 { 4700 int err; 4701 char errbuf[1024]; 4702 4703 err = lzc_get_holds(zhp->zfs_name, nvl); 4704 4705 if (err != 0) { 4706 libzfs_handle_t *hdl = zhp->zfs_hdl; 4707 4708 (void) snprintf(errbuf, sizeof (errbuf), 4709 dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"), 4710 zhp->zfs_name); 4711 switch (err) { 4712 case ENOTSUP: 4713 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4714 "pool must be upgraded")); 4715 err = zfs_error(hdl, EZFS_BADVERSION, errbuf); 4716 break; 4717 case EINVAL: 4718 err = zfs_error(hdl, EZFS_BADTYPE, errbuf); 4719 break; 4720 case ENOENT: 4721 err = zfs_error(hdl, EZFS_NOENT, errbuf); 4722 break; 4723 default: 4724 err = zfs_standard_error_fmt(hdl, errno, errbuf); 4725 break; 4726 } 4727 } 4728 4729 return (err); 4730 } 4731 4732 /* 4733 * Convert the zvol's volume size to an appropriate reservation. 4734 * Note: If this routine is updated, it is necessary to update the ZFS test 4735 * suite's shell version in reservation.kshlib. 4736 */ 4737 uint64_t 4738 zvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props) 4739 { 4740 uint64_t numdb; 4741 uint64_t nblocks, volblocksize; 4742 int ncopies; 4743 char *strval; 4744 4745 if (nvlist_lookup_string(props, 4746 zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0) 4747 ncopies = atoi(strval); 4748 else 4749 ncopies = 1; 4750 if (nvlist_lookup_uint64(props, 4751 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 4752 &volblocksize) != 0) 4753 volblocksize = ZVOL_DEFAULT_BLOCKSIZE; 4754 nblocks = volsize/volblocksize; 4755 /* start with metadnode L0-L6 */ 4756 numdb = 7; 4757 /* calculate number of indirects */ 4758 while (nblocks > 1) { 4759 nblocks += DNODES_PER_LEVEL - 1; 4760 nblocks /= DNODES_PER_LEVEL; 4761 numdb += nblocks; 4762 } 4763 numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1); 4764 volsize *= ncopies; 4765 /* 4766 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't 4767 * compressed, but in practice they compress down to about 4768 * 1100 bytes 4769 */ 4770 numdb *= 1ULL << DN_MAX_INDBLKSHIFT; 4771 volsize += numdb; 4772 return (volsize); 4773 } 4774