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 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include <assert.h> 28 #include <ctype.h> 29 #include <errno.h> 30 #include <libgen.h> 31 #include <libintl.h> 32 #include <libuutil.h> 33 #include <libnvpair.h> 34 #include <locale.h> 35 #include <stddef.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <strings.h> 39 #include <unistd.h> 40 #include <fcntl.h> 41 #include <zone.h> 42 #include <sys/mkdev.h> 43 #include <sys/mntent.h> 44 #include <sys/mnttab.h> 45 #include <sys/mount.h> 46 #include <sys/stat.h> 47 #include <sys/avl.h> 48 49 #include <libzfs.h> 50 #include <libuutil.h> 51 52 #include "zfs_iter.h" 53 #include "zfs_util.h" 54 55 libzfs_handle_t *g_zfs; 56 57 static FILE *mnttab_file; 58 static char history_str[HIS_MAX_RECORD_LEN]; 59 60 static int zfs_do_clone(int argc, char **argv); 61 static int zfs_do_create(int argc, char **argv); 62 static int zfs_do_destroy(int argc, char **argv); 63 static int zfs_do_get(int argc, char **argv); 64 static int zfs_do_inherit(int argc, char **argv); 65 static int zfs_do_list(int argc, char **argv); 66 static int zfs_do_mount(int argc, char **argv); 67 static int zfs_do_rename(int argc, char **argv); 68 static int zfs_do_rollback(int argc, char **argv); 69 static int zfs_do_set(int argc, char **argv); 70 static int zfs_do_upgrade(int argc, char **argv); 71 static int zfs_do_snapshot(int argc, char **argv); 72 static int zfs_do_unmount(int argc, char **argv); 73 static int zfs_do_share(int argc, char **argv); 74 static int zfs_do_unshare(int argc, char **argv); 75 static int zfs_do_send(int argc, char **argv); 76 static int zfs_do_receive(int argc, char **argv); 77 static int zfs_do_promote(int argc, char **argv); 78 static int zfs_do_allow(int argc, char **argv); 79 static int zfs_do_unallow(int argc, char **argv); 80 81 /* 82 * Enable a reasonable set of defaults for libumem debugging on DEBUG builds. 83 */ 84 85 #ifdef DEBUG 86 const char * 87 _umem_debug_init(void) 88 { 89 return ("default,verbose"); /* $UMEM_DEBUG setting */ 90 } 91 92 const char * 93 _umem_logging_init(void) 94 { 95 return ("fail,contents"); /* $UMEM_LOGGING setting */ 96 } 97 #endif 98 99 typedef enum { 100 HELP_CLONE, 101 HELP_CREATE, 102 HELP_DESTROY, 103 HELP_GET, 104 HELP_INHERIT, 105 HELP_UPGRADE, 106 HELP_LIST, 107 HELP_MOUNT, 108 HELP_PROMOTE, 109 HELP_RECEIVE, 110 HELP_RENAME, 111 HELP_ROLLBACK, 112 HELP_SEND, 113 HELP_SET, 114 HELP_SHARE, 115 HELP_SNAPSHOT, 116 HELP_UNMOUNT, 117 HELP_UNSHARE, 118 HELP_ALLOW, 119 HELP_UNALLOW 120 } zfs_help_t; 121 122 typedef struct zfs_command { 123 const char *name; 124 int (*func)(int argc, char **argv); 125 zfs_help_t usage; 126 } zfs_command_t; 127 128 /* 129 * Master command table. Each ZFS command has a name, associated function, and 130 * usage message. The usage messages need to be internationalized, so we have 131 * to have a function to return the usage message based on a command index. 132 * 133 * These commands are organized according to how they are displayed in the usage 134 * message. An empty command (one with a NULL name) indicates an empty line in 135 * the generic usage message. 136 */ 137 static zfs_command_t command_table[] = { 138 { "create", zfs_do_create, HELP_CREATE }, 139 { "destroy", zfs_do_destroy, HELP_DESTROY }, 140 { NULL }, 141 { "snapshot", zfs_do_snapshot, HELP_SNAPSHOT }, 142 { "rollback", zfs_do_rollback, HELP_ROLLBACK }, 143 { "clone", zfs_do_clone, HELP_CLONE }, 144 { "promote", zfs_do_promote, HELP_PROMOTE }, 145 { "rename", zfs_do_rename, HELP_RENAME }, 146 { NULL }, 147 { "list", zfs_do_list, HELP_LIST }, 148 { NULL }, 149 { "set", zfs_do_set, HELP_SET }, 150 { "get", zfs_do_get, HELP_GET }, 151 { "inherit", zfs_do_inherit, HELP_INHERIT }, 152 { "upgrade", zfs_do_upgrade, HELP_UPGRADE }, 153 { NULL }, 154 { "mount", zfs_do_mount, HELP_MOUNT }, 155 { "unmount", zfs_do_unmount, HELP_UNMOUNT }, 156 { "share", zfs_do_share, HELP_SHARE }, 157 { "unshare", zfs_do_unshare, HELP_UNSHARE }, 158 { NULL }, 159 { "send", zfs_do_send, HELP_SEND }, 160 { "receive", zfs_do_receive, HELP_RECEIVE }, 161 { NULL }, 162 { "allow", zfs_do_allow, HELP_ALLOW }, 163 { NULL }, 164 { "unallow", zfs_do_unallow, HELP_UNALLOW }, 165 }; 166 167 #define NCOMMAND (sizeof (command_table) / sizeof (command_table[0])) 168 169 zfs_command_t *current_command; 170 171 static const char * 172 get_usage(zfs_help_t idx) 173 { 174 switch (idx) { 175 case HELP_CLONE: 176 return (gettext("\tclone [-p] [-o property=value] ... " 177 "<snapshot> <filesystem|volume>\n")); 178 case HELP_CREATE: 179 return (gettext("\tcreate [-p] [-o property=value] ... " 180 "<filesystem>\n" 181 "\tcreate [-ps] [-b blocksize] [-o property=value] ... " 182 "-V <size> <volume>\n")); 183 case HELP_DESTROY: 184 return (gettext("\tdestroy [-rRf] " 185 "<filesystem|volume|snapshot>\n")); 186 case HELP_GET: 187 return (gettext("\tget [-rHp] [-o field[,...]] " 188 "[-s source[,...]]\n" 189 "\t <\"all\" | property[,...]> " 190 "[filesystem|volume|snapshot] ...\n")); 191 case HELP_INHERIT: 192 return (gettext("\tinherit [-r] <property> " 193 "<filesystem|volume|snapshot> ...\n")); 194 case HELP_UPGRADE: 195 return (gettext("\tupgrade [-v]\n" 196 "\tupgrade [-r] [-V version] <-a | filesystem ...>\n")); 197 case HELP_LIST: 198 return (gettext("\tlist [-rH] [-o property[,...]] " 199 "[-t type[,...]] [-s property] ...\n" 200 "\t [-S property] ... " 201 "[filesystem|volume|snapshot] ...\n")); 202 case HELP_MOUNT: 203 return (gettext("\tmount\n" 204 "\tmount [-vO] [-o opts] <-a | filesystem>\n")); 205 case HELP_PROMOTE: 206 return (gettext("\tpromote <clone-filesystem>\n")); 207 case HELP_RECEIVE: 208 return (gettext("\treceive [-vnF] <filesystem|volume|" 209 "snapshot>\n" 210 "\treceive [-vnF] -d <filesystem>\n")); 211 case HELP_RENAME: 212 return (gettext("\trename <filesystem|volume|snapshot> " 213 "<filesystem|volume|snapshot>\n" 214 "\trename -p <filesystem|volume> <filesystem|volume>\n" 215 "\trename -r <snapshot> <snapshot>")); 216 case HELP_ROLLBACK: 217 return (gettext("\trollback [-rRf] <snapshot>\n")); 218 case HELP_SEND: 219 return (gettext("\tsend [-R] [-[iI] snapshot] <snapshot>\n")); 220 case HELP_SET: 221 return (gettext("\tset <property=value> " 222 "<filesystem|volume|snapshot> ...\n")); 223 case HELP_SHARE: 224 return (gettext("\tshare <-a | filesystem>\n")); 225 case HELP_SNAPSHOT: 226 return (gettext("\tsnapshot [-r] [-o property=value] ... " 227 "<filesystem@snapname|volume@snapname>\n")); 228 case HELP_UNMOUNT: 229 return (gettext("\tunmount [-f] " 230 "<-a | filesystem|mountpoint>\n")); 231 case HELP_UNSHARE: 232 return (gettext("\tunshare [-f] " 233 "<-a | filesystem|mountpoint>\n")); 234 case HELP_ALLOW: 235 return (gettext("\tallow [-ldug] " 236 "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n" 237 "\t <filesystem|volume>\n" 238 "\tallow [-ld] -e <perm|@setname>[,...] " 239 "<filesystem|volume>\n" 240 "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n" 241 "\tallow -s @setname <perm|@setname>[,...] " 242 "<filesystem|volume>\n")); 243 case HELP_UNALLOW: 244 return (gettext("\tunallow [-rldug] " 245 "<\"everyone\"|user|group>[,...]\n" 246 "\t [<perm|@setname>[,...]] <filesystem|volume>\n" 247 "\tunallow [-rld] -e [<perm|@setname>[,...]] " 248 "<filesystem|volume>\n" 249 "\tunallow [-r] -c [<perm|@setname>[,...]] " 250 "<filesystem|volume>\n" 251 "\tunallow [-r] -s @setname [<perm|@setname>[,...]] " 252 "<filesystem|volume>\n")); 253 } 254 255 abort(); 256 /* NOTREACHED */ 257 } 258 259 /* 260 * Utility function to guarantee malloc() success. 261 */ 262 void * 263 safe_malloc(size_t size) 264 { 265 void *data; 266 267 if ((data = calloc(1, size)) == NULL) { 268 (void) fprintf(stderr, "internal error: out of memory\n"); 269 exit(1); 270 } 271 272 return (data); 273 } 274 275 /* 276 * Callback routine that will print out information for each of 277 * the properties. 278 */ 279 static int 280 usage_prop_cb(int prop, void *cb) 281 { 282 FILE *fp = cb; 283 284 (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop)); 285 286 if (zfs_prop_readonly(prop)) 287 (void) fprintf(fp, " NO "); 288 else 289 (void) fprintf(fp, "YES "); 290 291 if (zfs_prop_inheritable(prop)) 292 (void) fprintf(fp, " YES "); 293 else 294 (void) fprintf(fp, " NO "); 295 296 if (zfs_prop_values(prop) == NULL) 297 (void) fprintf(fp, "-\n"); 298 else 299 (void) fprintf(fp, "%s\n", zfs_prop_values(prop)); 300 301 return (ZPROP_CONT); 302 } 303 304 /* 305 * Display usage message. If we're inside a command, display only the usage for 306 * that command. Otherwise, iterate over the entire command table and display 307 * a complete usage message. 308 */ 309 static void 310 usage(boolean_t requested) 311 { 312 int i; 313 boolean_t show_properties = B_FALSE; 314 boolean_t show_permissions = B_FALSE; 315 FILE *fp = requested ? stdout : stderr; 316 317 if (current_command == NULL) { 318 319 (void) fprintf(fp, gettext("usage: zfs command args ...\n")); 320 (void) fprintf(fp, 321 gettext("where 'command' is one of the following:\n\n")); 322 323 for (i = 0; i < NCOMMAND; i++) { 324 if (command_table[i].name == NULL) 325 (void) fprintf(fp, "\n"); 326 else 327 (void) fprintf(fp, "%s", 328 get_usage(command_table[i].usage)); 329 } 330 331 (void) fprintf(fp, gettext("\nEach dataset is of the form: " 332 "pool/[dataset/]*dataset[@name]\n")); 333 } else { 334 (void) fprintf(fp, gettext("usage:\n")); 335 (void) fprintf(fp, "%s", get_usage(current_command->usage)); 336 } 337 338 if (current_command != NULL && 339 (strcmp(current_command->name, "set") == 0 || 340 strcmp(current_command->name, "get") == 0 || 341 strcmp(current_command->name, "inherit") == 0 || 342 strcmp(current_command->name, "list") == 0)) 343 show_properties = B_TRUE; 344 345 if (current_command != NULL && 346 (strcmp(current_command->name, "allow") == 0 || 347 strcmp(current_command->name, "unallow") == 0)) 348 show_permissions = B_TRUE; 349 350 if (show_properties) { 351 352 (void) fprintf(fp, 353 gettext("\nThe following properties are supported:\n")); 354 355 (void) fprintf(fp, "\n\t%-14s %s %s %s\n\n", 356 "PROPERTY", "EDIT", "INHERIT", "VALUES"); 357 358 /* Iterate over all properties */ 359 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE, 360 ZFS_TYPE_DATASET); 361 362 (void) fprintf(fp, gettext("\nSizes are specified in bytes " 363 "with standard units such as K, M, G, etc.\n")); 364 (void) fprintf(fp, gettext("\nUser-defined properties can " 365 "be specified by using a name containing a colon (:).\n")); 366 367 } else if (show_permissions) { 368 (void) fprintf(fp, 369 gettext("\nThe following permissions are supported:\n")); 370 371 zfs_deleg_permissions(); 372 } else { 373 /* 374 * TRANSLATION NOTE: 375 * "zfs set|get" must not be localised this is the 376 * command name and arguments. 377 */ 378 379 (void) fprintf(fp, 380 gettext("\nFor the property list, run: zfs set|get\n")); 381 382 (void) fprintf(fp, 383 gettext("\nFor the delegated permission list, run:" 384 " zfs allow|unallow\n")); 385 } 386 387 /* 388 * See comments at end of main(). 389 */ 390 if (getenv("ZFS_ABORT") != NULL) { 391 (void) printf("dumping core by request\n"); 392 abort(); 393 } 394 395 exit(requested ? 0 : 2); 396 } 397 398 static int 399 parseprop(nvlist_t *props) 400 { 401 char *propname = optarg; 402 char *propval, *strval; 403 404 if ((propval = strchr(propname, '=')) == NULL) { 405 (void) fprintf(stderr, gettext("missing " 406 "'=' for -o option\n")); 407 return (-1); 408 } 409 *propval = '\0'; 410 propval++; 411 if (nvlist_lookup_string(props, propname, &strval) == 0) { 412 (void) fprintf(stderr, gettext("property '%s' " 413 "specified multiple times\n"), propname); 414 return (-1); 415 } 416 if (nvlist_add_string(props, propname, propval) != 0) { 417 (void) fprintf(stderr, gettext("internal " 418 "error: out of memory\n")); 419 return (-1); 420 } 421 return (0); 422 423 } 424 425 /* 426 * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol> 427 * 428 * Given an existing dataset, create a writable copy whose initial contents 429 * are the same as the source. The newly created dataset maintains a 430 * dependency on the original; the original cannot be destroyed so long as 431 * the clone exists. 432 * 433 * The '-p' flag creates all the non-existing ancestors of the target first. 434 */ 435 static int 436 zfs_do_clone(int argc, char **argv) 437 { 438 zfs_handle_t *zhp = NULL; 439 boolean_t parents = B_FALSE; 440 nvlist_t *props; 441 int ret; 442 int c; 443 444 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 445 (void) fprintf(stderr, gettext("internal error: " 446 "out of memory\n")); 447 return (1); 448 } 449 450 /* check options */ 451 while ((c = getopt(argc, argv, "o:p")) != -1) { 452 switch (c) { 453 case 'o': 454 if (parseprop(props)) 455 return (1); 456 break; 457 case 'p': 458 parents = B_TRUE; 459 break; 460 case '?': 461 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 462 optopt); 463 goto usage; 464 } 465 } 466 467 argc -= optind; 468 argv += optind; 469 470 /* check number of arguments */ 471 if (argc < 1) { 472 (void) fprintf(stderr, gettext("missing source dataset " 473 "argument\n")); 474 goto usage; 475 } 476 if (argc < 2) { 477 (void) fprintf(stderr, gettext("missing target dataset " 478 "argument\n")); 479 goto usage; 480 } 481 if (argc > 2) { 482 (void) fprintf(stderr, gettext("too many arguments\n")); 483 goto usage; 484 } 485 486 /* open the source dataset */ 487 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 488 return (1); 489 490 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM | 491 ZFS_TYPE_VOLUME)) { 492 /* 493 * Now create the ancestors of the target dataset. If the 494 * target already exists and '-p' option was used we should not 495 * complain. 496 */ 497 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | 498 ZFS_TYPE_VOLUME)) 499 return (0); 500 if (zfs_create_ancestors(g_zfs, argv[1]) != 0) 501 return (1); 502 } 503 504 /* pass to libzfs */ 505 ret = zfs_clone(zhp, argv[1], props); 506 507 /* create the mountpoint if necessary */ 508 if (ret == 0) { 509 zfs_handle_t *clone; 510 511 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET); 512 if (clone != NULL) { 513 if ((ret = zfs_mount(clone, NULL, 0)) == 0) 514 ret = zfs_share(clone); 515 zfs_close(clone); 516 } 517 } 518 519 zfs_close(zhp); 520 nvlist_free(props); 521 522 return (!!ret); 523 524 usage: 525 if (zhp) 526 zfs_close(zhp); 527 nvlist_free(props); 528 usage(B_FALSE); 529 return (-1); 530 } 531 532 /* 533 * zfs create [-p] [-o prop=value] ... fs 534 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size 535 * 536 * Create a new dataset. This command can be used to create filesystems 537 * and volumes. Snapshot creation is handled by 'zfs snapshot'. 538 * For volumes, the user must specify a size to be used. 539 * 540 * The '-s' flag applies only to volumes, and indicates that we should not try 541 * to set the reservation for this volume. By default we set a reservation 542 * equal to the size for any volume. For pools with SPA_VERSION >= 543 * SPA_VERSION_REFRESERVATION, we set a refreservation instead. 544 * 545 * The '-p' flag creates all the non-existing ancestors of the target first. 546 */ 547 static int 548 zfs_do_create(int argc, char **argv) 549 { 550 zfs_type_t type = ZFS_TYPE_FILESYSTEM; 551 zfs_handle_t *zhp = NULL; 552 uint64_t volsize; 553 int c; 554 boolean_t noreserve = B_FALSE; 555 boolean_t bflag = B_FALSE; 556 boolean_t parents = B_FALSE; 557 int ret = 1; 558 nvlist_t *props; 559 uint64_t intval; 560 int canmount; 561 562 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 563 (void) fprintf(stderr, gettext("internal error: " 564 "out of memory\n")); 565 return (1); 566 } 567 568 /* check options */ 569 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) { 570 switch (c) { 571 case 'V': 572 type = ZFS_TYPE_VOLUME; 573 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 574 (void) fprintf(stderr, gettext("bad volume " 575 "size '%s': %s\n"), optarg, 576 libzfs_error_description(g_zfs)); 577 goto error; 578 } 579 580 if (nvlist_add_uint64(props, 581 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 582 intval) != 0) { 583 (void) fprintf(stderr, gettext("internal " 584 "error: out of memory\n")); 585 goto error; 586 } 587 volsize = intval; 588 break; 589 case 'p': 590 parents = B_TRUE; 591 break; 592 case 'b': 593 bflag = B_TRUE; 594 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 595 (void) fprintf(stderr, gettext("bad volume " 596 "block size '%s': %s\n"), optarg, 597 libzfs_error_description(g_zfs)); 598 goto error; 599 } 600 601 if (nvlist_add_uint64(props, 602 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 603 intval) != 0) { 604 (void) fprintf(stderr, gettext("internal " 605 "error: out of memory\n")); 606 goto error; 607 } 608 break; 609 case 'o': 610 if (parseprop(props)) 611 goto error; 612 break; 613 case 's': 614 noreserve = B_TRUE; 615 break; 616 case ':': 617 (void) fprintf(stderr, gettext("missing size " 618 "argument\n")); 619 goto badusage; 620 break; 621 case '?': 622 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 623 optopt); 624 goto badusage; 625 } 626 } 627 628 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) { 629 (void) fprintf(stderr, gettext("'-s' and '-b' can only be " 630 "used when creating a volume\n")); 631 goto badusage; 632 } 633 634 argc -= optind; 635 argv += optind; 636 637 /* check number of arguments */ 638 if (argc == 0) { 639 (void) fprintf(stderr, gettext("missing %s argument\n"), 640 zfs_type_to_name(type)); 641 goto badusage; 642 } 643 if (argc > 1) { 644 (void) fprintf(stderr, gettext("too many arguments\n")); 645 goto badusage; 646 } 647 648 if (type == ZFS_TYPE_VOLUME && !noreserve) { 649 zpool_handle_t *zpool_handle; 650 uint64_t spa_version; 651 char *p; 652 zfs_prop_t resv_prop; 653 char *strval; 654 655 if (p = strchr(argv[0], '/')) 656 *p = '\0'; 657 zpool_handle = zpool_open(g_zfs, argv[0]); 658 if (p != NULL) 659 *p = '/'; 660 if (zpool_handle == NULL) 661 goto error; 662 spa_version = zpool_get_prop_int(zpool_handle, 663 ZPOOL_PROP_VERSION, NULL); 664 zpool_close(zpool_handle); 665 if (spa_version >= SPA_VERSION_REFRESERVATION) 666 resv_prop = ZFS_PROP_REFRESERVATION; 667 else 668 resv_prop = ZFS_PROP_RESERVATION; 669 670 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop), 671 &strval) != 0) { 672 if (nvlist_add_uint64(props, 673 zfs_prop_to_name(resv_prop), volsize) != 0) { 674 (void) fprintf(stderr, gettext("internal " 675 "error: out of memory\n")); 676 nvlist_free(props); 677 return (1); 678 } 679 } 680 } 681 682 if (parents && zfs_name_valid(argv[0], type)) { 683 /* 684 * Now create the ancestors of target dataset. If the target 685 * already exists and '-p' option was used we should not 686 * complain. 687 */ 688 if (zfs_dataset_exists(g_zfs, argv[0], type)) { 689 ret = 0; 690 goto error; 691 } 692 if (zfs_create_ancestors(g_zfs, argv[0]) != 0) 693 goto error; 694 } 695 696 /* pass to libzfs */ 697 if (zfs_create(g_zfs, argv[0], type, props) != 0) 698 goto error; 699 700 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 701 goto error; 702 /* 703 * if the user doesn't want the dataset automatically mounted, 704 * then skip the mount/share step 705 */ 706 707 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 708 709 /* 710 * Mount and/or share the new filesystem as appropriate. We provide a 711 * verbose error message to let the user know that their filesystem was 712 * in fact created, even if we failed to mount or share it. 713 */ 714 ret = 0; 715 if (canmount == ZFS_CANMOUNT_ON) { 716 if (zfs_mount(zhp, NULL, 0) != 0) { 717 (void) fprintf(stderr, gettext("filesystem " 718 "successfully created, but not mounted\n")); 719 ret = 1; 720 } else if (zfs_share(zhp) != 0) { 721 (void) fprintf(stderr, gettext("filesystem " 722 "successfully created, but not shared\n")); 723 ret = 1; 724 } 725 } 726 727 error: 728 if (zhp) 729 zfs_close(zhp); 730 nvlist_free(props); 731 return (ret); 732 badusage: 733 nvlist_free(props); 734 usage(B_FALSE); 735 return (2); 736 } 737 738 /* 739 * zfs destroy [-rf] <fs, snap, vol> 740 * 741 * -r Recursively destroy all children 742 * -R Recursively destroy all dependents, including clones 743 * -f Force unmounting of any dependents 744 * 745 * Destroys the given dataset. By default, it will unmount any filesystems, 746 * and refuse to destroy a dataset that has any dependents. A dependent can 747 * either be a child, or a clone of a child. 748 */ 749 typedef struct destroy_cbdata { 750 boolean_t cb_first; 751 int cb_force; 752 int cb_recurse; 753 int cb_error; 754 int cb_needforce; 755 int cb_doclones; 756 boolean_t cb_closezhp; 757 zfs_handle_t *cb_target; 758 char *cb_snapname; 759 } destroy_cbdata_t; 760 761 /* 762 * Check for any dependents based on the '-r' or '-R' flags. 763 */ 764 static int 765 destroy_check_dependent(zfs_handle_t *zhp, void *data) 766 { 767 destroy_cbdata_t *cbp = data; 768 const char *tname = zfs_get_name(cbp->cb_target); 769 const char *name = zfs_get_name(zhp); 770 771 if (strncmp(tname, name, strlen(tname)) == 0 && 772 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) { 773 /* 774 * This is a direct descendant, not a clone somewhere else in 775 * the hierarchy. 776 */ 777 if (cbp->cb_recurse) 778 goto out; 779 780 if (cbp->cb_first) { 781 (void) fprintf(stderr, gettext("cannot destroy '%s': " 782 "%s has children\n"), 783 zfs_get_name(cbp->cb_target), 784 zfs_type_to_name(zfs_get_type(cbp->cb_target))); 785 (void) fprintf(stderr, gettext("use '-r' to destroy " 786 "the following datasets:\n")); 787 cbp->cb_first = B_FALSE; 788 cbp->cb_error = 1; 789 } 790 791 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 792 } else { 793 /* 794 * This is a clone. We only want to report this if the '-r' 795 * wasn't specified, or the target is a snapshot. 796 */ 797 if (!cbp->cb_recurse && 798 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT) 799 goto out; 800 801 if (cbp->cb_first) { 802 (void) fprintf(stderr, gettext("cannot destroy '%s': " 803 "%s has dependent clones\n"), 804 zfs_get_name(cbp->cb_target), 805 zfs_type_to_name(zfs_get_type(cbp->cb_target))); 806 (void) fprintf(stderr, gettext("use '-R' to destroy " 807 "the following datasets:\n")); 808 cbp->cb_first = B_FALSE; 809 cbp->cb_error = 1; 810 } 811 812 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 813 } 814 815 out: 816 zfs_close(zhp); 817 return (0); 818 } 819 820 static int 821 destroy_callback(zfs_handle_t *zhp, void *data) 822 { 823 destroy_cbdata_t *cbp = data; 824 825 /* 826 * Ignore pools (which we've already flagged as an error before getting 827 * here. 828 */ 829 if (strchr(zfs_get_name(zhp), '/') == NULL && 830 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 831 zfs_close(zhp); 832 return (0); 833 } 834 835 /* 836 * Bail out on the first error. 837 */ 838 if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 || 839 zfs_destroy(zhp) != 0) { 840 zfs_close(zhp); 841 return (-1); 842 } 843 844 zfs_close(zhp); 845 return (0); 846 } 847 848 static int 849 destroy_snap_clones(zfs_handle_t *zhp, void *arg) 850 { 851 destroy_cbdata_t *cbp = arg; 852 char thissnap[MAXPATHLEN]; 853 zfs_handle_t *szhp; 854 boolean_t closezhp = cbp->cb_closezhp; 855 int rv; 856 857 (void) snprintf(thissnap, sizeof (thissnap), 858 "%s@%s", zfs_get_name(zhp), cbp->cb_snapname); 859 860 libzfs_print_on_error(g_zfs, B_FALSE); 861 szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT); 862 libzfs_print_on_error(g_zfs, B_TRUE); 863 if (szhp) { 864 /* 865 * Destroy any clones of this snapshot 866 */ 867 if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback, 868 cbp) != 0) { 869 zfs_close(szhp); 870 if (closezhp) 871 zfs_close(zhp); 872 return (-1); 873 } 874 zfs_close(szhp); 875 } 876 877 cbp->cb_closezhp = B_TRUE; 878 rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg); 879 if (closezhp) 880 zfs_close(zhp); 881 return (rv); 882 } 883 884 static int 885 zfs_do_destroy(int argc, char **argv) 886 { 887 destroy_cbdata_t cb = { 0 }; 888 int c; 889 zfs_handle_t *zhp; 890 char *cp; 891 892 /* check options */ 893 while ((c = getopt(argc, argv, "frR")) != -1) { 894 switch (c) { 895 case 'f': 896 cb.cb_force = 1; 897 break; 898 case 'r': 899 cb.cb_recurse = 1; 900 break; 901 case 'R': 902 cb.cb_recurse = 1; 903 cb.cb_doclones = 1; 904 break; 905 case '?': 906 default: 907 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 908 optopt); 909 usage(B_FALSE); 910 } 911 } 912 913 argc -= optind; 914 argv += optind; 915 916 /* check number of arguments */ 917 if (argc == 0) { 918 (void) fprintf(stderr, gettext("missing path argument\n")); 919 usage(B_FALSE); 920 } 921 if (argc > 1) { 922 (void) fprintf(stderr, gettext("too many arguments\n")); 923 usage(B_FALSE); 924 } 925 926 /* 927 * If we are doing recursive destroy of a snapshot, then the 928 * named snapshot may not exist. Go straight to libzfs. 929 */ 930 if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) { 931 int ret; 932 933 *cp = '\0'; 934 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 935 return (1); 936 *cp = '@'; 937 cp++; 938 939 if (cb.cb_doclones) { 940 cb.cb_snapname = cp; 941 if (destroy_snap_clones(zhp, &cb) != 0) { 942 zfs_close(zhp); 943 return (1); 944 } 945 } 946 947 ret = zfs_destroy_snaps(zhp, cp); 948 zfs_close(zhp); 949 if (ret) { 950 (void) fprintf(stderr, 951 gettext("no snapshots destroyed\n")); 952 } 953 return (ret != 0); 954 } 955 956 957 /* Open the given dataset */ 958 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 959 return (1); 960 961 cb.cb_target = zhp; 962 963 /* 964 * Perform an explicit check for pools before going any further. 965 */ 966 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL && 967 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 968 (void) fprintf(stderr, gettext("cannot destroy '%s': " 969 "operation does not apply to pools\n"), 970 zfs_get_name(zhp)); 971 (void) fprintf(stderr, gettext("use 'zfs destroy -r " 972 "%s' to destroy all datasets in the pool\n"), 973 zfs_get_name(zhp)); 974 (void) fprintf(stderr, gettext("use 'zpool destroy %s' " 975 "to destroy the pool itself\n"), zfs_get_name(zhp)); 976 zfs_close(zhp); 977 return (1); 978 } 979 980 /* 981 * Check for any dependents and/or clones. 982 */ 983 cb.cb_first = B_TRUE; 984 if (!cb.cb_doclones && 985 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent, 986 &cb) != 0) { 987 zfs_close(zhp); 988 return (1); 989 } 990 991 if (cb.cb_error || 992 zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0) { 993 zfs_close(zhp); 994 return (1); 995 } 996 997 /* 998 * Do the real thing. The callback will close the handle regardless of 999 * whether it succeeds or not. 1000 */ 1001 1002 if (destroy_callback(zhp, &cb) != 0) 1003 return (1); 1004 1005 1006 return (0); 1007 } 1008 1009 /* 1010 * zfs get [-rHp] [-o field[,field]...] [-s source[,source]...] 1011 * < all | property[,property]... > < fs | snap | vol > ... 1012 * 1013 * -r recurse over any child datasets 1014 * -H scripted mode. Headers are stripped, and fields are separated 1015 * by tabs instead of spaces. 1016 * -o Set of fields to display. One of "name,property,value,source". 1017 * Default is all four. 1018 * -s Set of sources to allow. One of 1019 * "local,default,inherited,temporary,none". Default is all 1020 * five. 1021 * -p Display values in parsable (literal) format. 1022 * 1023 * Prints properties for the given datasets. The user can control which 1024 * columns to display as well as which property types to allow. 1025 */ 1026 1027 /* 1028 * Invoked to display the properties for a single dataset. 1029 */ 1030 static int 1031 get_callback(zfs_handle_t *zhp, void *data) 1032 { 1033 char buf[ZFS_MAXPROPLEN]; 1034 zprop_source_t sourcetype; 1035 char source[ZFS_MAXNAMELEN]; 1036 zprop_get_cbdata_t *cbp = data; 1037 nvlist_t *userprop = zfs_get_user_props(zhp); 1038 zprop_list_t *pl = cbp->cb_proplist; 1039 nvlist_t *propval; 1040 char *strval; 1041 char *sourceval; 1042 1043 for (; pl != NULL; pl = pl->pl_next) { 1044 /* 1045 * Skip the special fake placeholder. This will also skip over 1046 * the name property when 'all' is specified. 1047 */ 1048 if (pl->pl_prop == ZFS_PROP_NAME && 1049 pl == cbp->cb_proplist) 1050 continue; 1051 1052 if (pl->pl_prop != ZPROP_INVAL) { 1053 if (zfs_prop_get(zhp, pl->pl_prop, buf, 1054 sizeof (buf), &sourcetype, source, 1055 sizeof (source), 1056 cbp->cb_literal) != 0) { 1057 if (pl->pl_all) 1058 continue; 1059 if (!zfs_prop_valid_for_type(pl->pl_prop, 1060 ZFS_TYPE_DATASET)) { 1061 (void) fprintf(stderr, 1062 gettext("No such property '%s'\n"), 1063 zfs_prop_to_name(pl->pl_prop)); 1064 continue; 1065 } 1066 sourcetype = ZPROP_SRC_NONE; 1067 (void) strlcpy(buf, "-", sizeof (buf)); 1068 } 1069 1070 zprop_print_one_property(zfs_get_name(zhp), cbp, 1071 zfs_prop_to_name(pl->pl_prop), 1072 buf, sourcetype, source); 1073 } else { 1074 if (nvlist_lookup_nvlist(userprop, 1075 pl->pl_user_prop, &propval) != 0) { 1076 if (pl->pl_all) 1077 continue; 1078 sourcetype = ZPROP_SRC_NONE; 1079 strval = "-"; 1080 } else { 1081 verify(nvlist_lookup_string(propval, 1082 ZPROP_VALUE, &strval) == 0); 1083 verify(nvlist_lookup_string(propval, 1084 ZPROP_SOURCE, &sourceval) == 0); 1085 1086 if (strcmp(sourceval, 1087 zfs_get_name(zhp)) == 0) { 1088 sourcetype = ZPROP_SRC_LOCAL; 1089 } else { 1090 sourcetype = ZPROP_SRC_INHERITED; 1091 (void) strlcpy(source, 1092 sourceval, sizeof (source)); 1093 } 1094 } 1095 1096 zprop_print_one_property(zfs_get_name(zhp), cbp, 1097 pl->pl_user_prop, strval, sourcetype, 1098 source); 1099 } 1100 } 1101 1102 return (0); 1103 } 1104 1105 static int 1106 zfs_do_get(int argc, char **argv) 1107 { 1108 zprop_get_cbdata_t cb = { 0 }; 1109 int i, c, flags = 0; 1110 char *value, *fields; 1111 int ret; 1112 zprop_list_t fake_name = { 0 }; 1113 1114 /* 1115 * Set up default columns and sources. 1116 */ 1117 cb.cb_sources = ZPROP_SRC_ALL; 1118 cb.cb_columns[0] = GET_COL_NAME; 1119 cb.cb_columns[1] = GET_COL_PROPERTY; 1120 cb.cb_columns[2] = GET_COL_VALUE; 1121 cb.cb_columns[3] = GET_COL_SOURCE; 1122 cb.cb_type = ZFS_TYPE_DATASET; 1123 1124 /* check options */ 1125 while ((c = getopt(argc, argv, ":o:s:rHp")) != -1) { 1126 switch (c) { 1127 case 'p': 1128 cb.cb_literal = B_TRUE; 1129 break; 1130 case 'r': 1131 flags |= ZFS_ITER_RECURSE; 1132 break; 1133 case 'H': 1134 cb.cb_scripted = B_TRUE; 1135 break; 1136 case ':': 1137 (void) fprintf(stderr, gettext("missing argument for " 1138 "'%c' option\n"), optopt); 1139 usage(B_FALSE); 1140 break; 1141 case 'o': 1142 /* 1143 * Process the set of columns to display. We zero out 1144 * the structure to give us a blank slate. 1145 */ 1146 bzero(&cb.cb_columns, sizeof (cb.cb_columns)); 1147 i = 0; 1148 while (*optarg != '\0') { 1149 static char *col_subopts[] = 1150 { "name", "property", "value", "source", 1151 NULL }; 1152 1153 if (i == 4) { 1154 (void) fprintf(stderr, gettext("too " 1155 "many fields given to -o " 1156 "option\n")); 1157 usage(B_FALSE); 1158 } 1159 1160 switch (getsubopt(&optarg, col_subopts, 1161 &value)) { 1162 case 0: 1163 cb.cb_columns[i++] = GET_COL_NAME; 1164 break; 1165 case 1: 1166 cb.cb_columns[i++] = GET_COL_PROPERTY; 1167 break; 1168 case 2: 1169 cb.cb_columns[i++] = GET_COL_VALUE; 1170 break; 1171 case 3: 1172 cb.cb_columns[i++] = GET_COL_SOURCE; 1173 break; 1174 default: 1175 (void) fprintf(stderr, 1176 gettext("invalid column name " 1177 "'%s'\n"), value); 1178 usage(B_FALSE); 1179 } 1180 } 1181 break; 1182 1183 case 's': 1184 cb.cb_sources = 0; 1185 while (*optarg != '\0') { 1186 static char *source_subopts[] = { 1187 "local", "default", "inherited", 1188 "temporary", "none", NULL }; 1189 1190 switch (getsubopt(&optarg, source_subopts, 1191 &value)) { 1192 case 0: 1193 cb.cb_sources |= ZPROP_SRC_LOCAL; 1194 break; 1195 case 1: 1196 cb.cb_sources |= ZPROP_SRC_DEFAULT; 1197 break; 1198 case 2: 1199 cb.cb_sources |= ZPROP_SRC_INHERITED; 1200 break; 1201 case 3: 1202 cb.cb_sources |= ZPROP_SRC_TEMPORARY; 1203 break; 1204 case 4: 1205 cb.cb_sources |= ZPROP_SRC_NONE; 1206 break; 1207 default: 1208 (void) fprintf(stderr, 1209 gettext("invalid source " 1210 "'%s'\n"), value); 1211 usage(B_FALSE); 1212 } 1213 } 1214 break; 1215 1216 case '?': 1217 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1218 optopt); 1219 usage(B_FALSE); 1220 } 1221 } 1222 1223 argc -= optind; 1224 argv += optind; 1225 1226 if (argc < 1) { 1227 (void) fprintf(stderr, gettext("missing property " 1228 "argument\n")); 1229 usage(B_FALSE); 1230 } 1231 1232 fields = argv[0]; 1233 1234 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1235 != 0) 1236 usage(B_FALSE); 1237 1238 argc--; 1239 argv++; 1240 1241 /* 1242 * As part of zfs_expand_proplist(), we keep track of the maximum column 1243 * width for each property. For the 'NAME' (and 'SOURCE') columns, we 1244 * need to know the maximum name length. However, the user likely did 1245 * not specify 'name' as one of the properties to fetch, so we need to 1246 * make sure we always include at least this property for 1247 * print_get_headers() to work properly. 1248 */ 1249 if (cb.cb_proplist != NULL) { 1250 fake_name.pl_prop = ZFS_PROP_NAME; 1251 fake_name.pl_width = strlen(gettext("NAME")); 1252 fake_name.pl_next = cb.cb_proplist; 1253 cb.cb_proplist = &fake_name; 1254 } 1255 1256 cb.cb_first = B_TRUE; 1257 1258 /* run for each object */ 1259 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, NULL, 1260 &cb.cb_proplist, get_callback, &cb); 1261 1262 if (cb.cb_proplist == &fake_name) 1263 zprop_free_list(fake_name.pl_next); 1264 else 1265 zprop_free_list(cb.cb_proplist); 1266 1267 return (ret); 1268 } 1269 1270 /* 1271 * inherit [-r] <property> <fs|vol> ... 1272 * 1273 * -r Recurse over all children 1274 * 1275 * For each dataset specified on the command line, inherit the given property 1276 * from its parent. Inheriting a property at the pool level will cause it to 1277 * use the default value. The '-r' flag will recurse over all children, and is 1278 * useful for setting a property on a hierarchy-wide basis, regardless of any 1279 * local modifications for each dataset. 1280 */ 1281 1282 static int 1283 inherit_recurse_cb(zfs_handle_t *zhp, void *data) 1284 { 1285 char *propname = data; 1286 zfs_prop_t prop = zfs_name_to_prop(propname); 1287 1288 /* 1289 * If we're doing it recursively, then ignore properties that 1290 * are not valid for this type of dataset. 1291 */ 1292 if (prop != ZPROP_INVAL && 1293 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp))) 1294 return (0); 1295 1296 return (zfs_prop_inherit(zhp, propname) != 0); 1297 } 1298 1299 static int 1300 inherit_cb(zfs_handle_t *zhp, void *data) 1301 { 1302 char *propname = data; 1303 1304 return (zfs_prop_inherit(zhp, propname) != 0); 1305 } 1306 1307 static int 1308 zfs_do_inherit(int argc, char **argv) 1309 { 1310 int c; 1311 zfs_prop_t prop; 1312 char *propname; 1313 int ret; 1314 int flags = 0; 1315 1316 /* check options */ 1317 while ((c = getopt(argc, argv, "r")) != -1) { 1318 switch (c) { 1319 case 'r': 1320 flags |= ZFS_ITER_RECURSE; 1321 break; 1322 case '?': 1323 default: 1324 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1325 optopt); 1326 usage(B_FALSE); 1327 } 1328 } 1329 1330 argc -= optind; 1331 argv += optind; 1332 1333 /* check number of arguments */ 1334 if (argc < 1) { 1335 (void) fprintf(stderr, gettext("missing property argument\n")); 1336 usage(B_FALSE); 1337 } 1338 if (argc < 2) { 1339 (void) fprintf(stderr, gettext("missing dataset argument\n")); 1340 usage(B_FALSE); 1341 } 1342 1343 propname = argv[0]; 1344 argc--; 1345 argv++; 1346 1347 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) { 1348 if (zfs_prop_readonly(prop)) { 1349 (void) fprintf(stderr, gettext( 1350 "%s property is read-only\n"), 1351 propname); 1352 return (1); 1353 } 1354 if (!zfs_prop_inheritable(prop)) { 1355 (void) fprintf(stderr, gettext("'%s' property cannot " 1356 "be inherited\n"), propname); 1357 if (prop == ZFS_PROP_QUOTA || 1358 prop == ZFS_PROP_RESERVATION || 1359 prop == ZFS_PROP_REFQUOTA || 1360 prop == ZFS_PROP_REFRESERVATION) 1361 (void) fprintf(stderr, gettext("use 'zfs set " 1362 "%s=none' to clear\n"), propname); 1363 return (1); 1364 } 1365 } else if (!zfs_prop_user(propname)) { 1366 (void) fprintf(stderr, gettext("invalid property '%s'\n"), 1367 propname); 1368 usage(B_FALSE); 1369 } 1370 1371 if (flags & ZFS_ITER_RECURSE) { 1372 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, 1373 NULL, NULL, inherit_recurse_cb, propname); 1374 } else { 1375 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, 1376 NULL, NULL, inherit_cb, propname); 1377 } 1378 1379 return (ret); 1380 } 1381 1382 typedef struct upgrade_cbdata { 1383 uint64_t cb_numupgraded; 1384 uint64_t cb_numsamegraded; 1385 uint64_t cb_numfailed; 1386 uint64_t cb_version; 1387 boolean_t cb_newer; 1388 boolean_t cb_foundone; 1389 char cb_lastfs[ZFS_MAXNAMELEN]; 1390 } upgrade_cbdata_t; 1391 1392 static int 1393 same_pool(zfs_handle_t *zhp, const char *name) 1394 { 1395 int len1 = strcspn(name, "/@"); 1396 const char *zhname = zfs_get_name(zhp); 1397 int len2 = strcspn(zhname, "/@"); 1398 1399 if (len1 != len2) 1400 return (B_FALSE); 1401 return (strncmp(name, zhname, len1) == 0); 1402 } 1403 1404 static int 1405 upgrade_list_callback(zfs_handle_t *zhp, void *data) 1406 { 1407 upgrade_cbdata_t *cb = data; 1408 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1409 1410 /* list if it's old/new */ 1411 if ((!cb->cb_newer && version < ZPL_VERSION) || 1412 (cb->cb_newer && version > ZPL_VERSION)) { 1413 char *str; 1414 if (cb->cb_newer) { 1415 str = gettext("The following filesystems are " 1416 "formatted using a newer software version and\n" 1417 "cannot be accessed on the current system.\n\n"); 1418 } else { 1419 str = gettext("The following filesystems are " 1420 "out of date, and can be upgraded. After being\n" 1421 "upgraded, these filesystems (and any 'zfs send' " 1422 "streams generated from\n" 1423 "subsequent snapshots) will no longer be " 1424 "accessible by older software versions.\n\n"); 1425 } 1426 1427 if (!cb->cb_foundone) { 1428 (void) puts(str); 1429 (void) printf(gettext("VER FILESYSTEM\n")); 1430 (void) printf(gettext("--- ------------\n")); 1431 cb->cb_foundone = B_TRUE; 1432 } 1433 1434 (void) printf("%2u %s\n", version, zfs_get_name(zhp)); 1435 } 1436 1437 return (0); 1438 } 1439 1440 static int 1441 upgrade_set_callback(zfs_handle_t *zhp, void *data) 1442 { 1443 upgrade_cbdata_t *cb = data; 1444 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1445 1446 if (cb->cb_version >= ZPL_VERSION_FUID) { 1447 int spa_version; 1448 1449 if (zfs_spa_version(zhp, &spa_version) < 0) 1450 return (-1); 1451 1452 if (spa_version < SPA_VERSION_FUID) { 1453 /* can't upgrade */ 1454 (void) printf(gettext("%s: can not be upgraded; " 1455 "the pool version needs to first be upgraded\nto " 1456 "version %d\n\n"), 1457 zfs_get_name(zhp), SPA_VERSION_FUID); 1458 cb->cb_numfailed++; 1459 return (0); 1460 } 1461 } 1462 1463 /* upgrade */ 1464 if (version < cb->cb_version) { 1465 char verstr[16]; 1466 (void) snprintf(verstr, sizeof (verstr), 1467 "%llu", cb->cb_version); 1468 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) { 1469 /* 1470 * If they did "zfs upgrade -a", then we could 1471 * be doing ioctls to different pools. We need 1472 * to log this history once to each pool. 1473 */ 1474 verify(zpool_stage_history(g_zfs, history_str) == 0); 1475 } 1476 if (zfs_prop_set(zhp, "version", verstr) == 0) 1477 cb->cb_numupgraded++; 1478 else 1479 cb->cb_numfailed++; 1480 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp)); 1481 } else if (version > cb->cb_version) { 1482 /* can't downgrade */ 1483 (void) printf(gettext("%s: can not be downgraded; " 1484 "it is already at version %u\n"), 1485 zfs_get_name(zhp), version); 1486 cb->cb_numfailed++; 1487 } else { 1488 cb->cb_numsamegraded++; 1489 } 1490 return (0); 1491 } 1492 1493 /* 1494 * zfs upgrade 1495 * zfs upgrade -v 1496 * zfs upgrade [-r] [-V <version>] <-a | filesystem> 1497 */ 1498 static int 1499 zfs_do_upgrade(int argc, char **argv) 1500 { 1501 boolean_t all = B_FALSE; 1502 boolean_t showversions = B_FALSE; 1503 int ret; 1504 upgrade_cbdata_t cb = { 0 }; 1505 char c; 1506 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS; 1507 1508 /* check options */ 1509 while ((c = getopt(argc, argv, "rvV:a")) != -1) { 1510 switch (c) { 1511 case 'r': 1512 flags |= ZFS_ITER_RECURSE; 1513 break; 1514 case 'v': 1515 showversions = B_TRUE; 1516 break; 1517 case 'V': 1518 if (zfs_prop_string_to_index(ZFS_PROP_VERSION, 1519 optarg, &cb.cb_version) != 0) { 1520 (void) fprintf(stderr, 1521 gettext("invalid version %s\n"), optarg); 1522 usage(B_FALSE); 1523 } 1524 break; 1525 case 'a': 1526 all = B_TRUE; 1527 break; 1528 case '?': 1529 default: 1530 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1531 optopt); 1532 usage(B_FALSE); 1533 } 1534 } 1535 1536 argc -= optind; 1537 argv += optind; 1538 1539 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version)) 1540 usage(B_FALSE); 1541 if (showversions && (flags & ZFS_ITER_RECURSE || all || 1542 cb.cb_version || argc)) 1543 usage(B_FALSE); 1544 if ((all || argc) && (showversions)) 1545 usage(B_FALSE); 1546 if (all && argc) 1547 usage(B_FALSE); 1548 1549 if (showversions) { 1550 /* Show info on available versions. */ 1551 (void) printf(gettext("The following filesystem versions are " 1552 "supported:\n\n")); 1553 (void) printf(gettext("VER DESCRIPTION\n")); 1554 (void) printf("--- -----------------------------------------" 1555 "---------------\n"); 1556 (void) printf(gettext(" 1 Initial ZFS filesystem version\n")); 1557 (void) printf(gettext(" 2 Enhanced directory entries\n")); 1558 (void) printf(gettext(" 3 Case insensitive and File system " 1559 "unique identifer (FUID)\n")); 1560 (void) printf(gettext("\nFor more information on a particular " 1561 "version, including supported releases, see:\n\n")); 1562 (void) printf("http://www.opensolaris.org/os/community/zfs/" 1563 "version/zpl/N\n\n"); 1564 (void) printf(gettext("Where 'N' is the version number.\n")); 1565 ret = 0; 1566 } else if (argc || all) { 1567 /* Upgrade filesystems */ 1568 if (cb.cb_version == 0) 1569 cb.cb_version = ZPL_VERSION; 1570 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM, 1571 NULL, NULL, upgrade_set_callback, &cb); 1572 (void) printf(gettext("%llu filesystems upgraded\n"), 1573 cb.cb_numupgraded); 1574 if (cb.cb_numsamegraded) { 1575 (void) printf(gettext("%llu filesystems already at " 1576 "this version\n"), 1577 cb.cb_numsamegraded); 1578 } 1579 if (cb.cb_numfailed != 0) 1580 ret = 1; 1581 } else { 1582 /* List old-version filesytems */ 1583 boolean_t found; 1584 (void) printf(gettext("This system is currently running " 1585 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION); 1586 1587 flags |= ZFS_ITER_RECURSE; 1588 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM, 1589 NULL, NULL, upgrade_list_callback, &cb); 1590 1591 found = cb.cb_foundone; 1592 cb.cb_foundone = B_FALSE; 1593 cb.cb_newer = B_TRUE; 1594 1595 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM, 1596 NULL, NULL, upgrade_list_callback, &cb); 1597 1598 if (!cb.cb_foundone && !found) { 1599 (void) printf(gettext("All filesystems are " 1600 "formatted with the current version.\n")); 1601 } 1602 } 1603 1604 return (ret); 1605 } 1606 1607 /* 1608 * list [-rH] [-o property[,property]...] [-t type[,type]...] 1609 * [-s property [-s property]...] [-S property [-S property]...] 1610 * <dataset> ... 1611 * 1612 * -r Recurse over all children 1613 * -H Scripted mode; elide headers and separate columns by tabs 1614 * -o Control which fields to display. 1615 * -t Control which object types to display. 1616 * -s Specify sort columns, descending order. 1617 * -S Specify sort columns, ascending order. 1618 * 1619 * When given no arguments, lists all filesystems in the system. 1620 * Otherwise, list the specified datasets, optionally recursing down them if 1621 * '-r' is specified. 1622 */ 1623 typedef struct list_cbdata { 1624 boolean_t cb_first; 1625 boolean_t cb_scripted; 1626 zprop_list_t *cb_proplist; 1627 } list_cbdata_t; 1628 1629 /* 1630 * Given a list of columns to display, output appropriate headers for each one. 1631 */ 1632 static void 1633 print_header(zprop_list_t *pl) 1634 { 1635 char headerbuf[ZFS_MAXPROPLEN]; 1636 const char *header; 1637 int i; 1638 boolean_t first = B_TRUE; 1639 boolean_t right_justify; 1640 1641 for (; pl != NULL; pl = pl->pl_next) { 1642 if (!first) { 1643 (void) printf(" "); 1644 } else { 1645 first = B_FALSE; 1646 } 1647 1648 right_justify = B_FALSE; 1649 if (pl->pl_prop != ZPROP_INVAL) { 1650 header = zfs_prop_column_name(pl->pl_prop); 1651 right_justify = zfs_prop_align_right(pl->pl_prop); 1652 } else { 1653 for (i = 0; pl->pl_user_prop[i] != '\0'; i++) 1654 headerbuf[i] = toupper(pl->pl_user_prop[i]); 1655 headerbuf[i] = '\0'; 1656 header = headerbuf; 1657 } 1658 1659 if (pl->pl_next == NULL && !right_justify) 1660 (void) printf("%s", header); 1661 else if (right_justify) 1662 (void) printf("%*s", pl->pl_width, header); 1663 else 1664 (void) printf("%-*s", pl->pl_width, header); 1665 } 1666 1667 (void) printf("\n"); 1668 } 1669 1670 /* 1671 * Given a dataset and a list of fields, print out all the properties according 1672 * to the described layout. 1673 */ 1674 static void 1675 print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted) 1676 { 1677 boolean_t first = B_TRUE; 1678 char property[ZFS_MAXPROPLEN]; 1679 nvlist_t *userprops = zfs_get_user_props(zhp); 1680 nvlist_t *propval; 1681 char *propstr; 1682 boolean_t right_justify; 1683 int width; 1684 1685 for (; pl != NULL; pl = pl->pl_next) { 1686 if (!first) { 1687 if (scripted) 1688 (void) printf("\t"); 1689 else 1690 (void) printf(" "); 1691 } else { 1692 first = B_FALSE; 1693 } 1694 1695 right_justify = B_FALSE; 1696 if (pl->pl_prop != ZPROP_INVAL) { 1697 if (zfs_prop_get(zhp, pl->pl_prop, property, 1698 sizeof (property), NULL, NULL, 0, B_FALSE) != 0) 1699 propstr = "-"; 1700 else 1701 propstr = property; 1702 1703 right_justify = zfs_prop_align_right(pl->pl_prop); 1704 } else { 1705 if (nvlist_lookup_nvlist(userprops, 1706 pl->pl_user_prop, &propval) != 0) 1707 propstr = "-"; 1708 else 1709 verify(nvlist_lookup_string(propval, 1710 ZPROP_VALUE, &propstr) == 0); 1711 } 1712 1713 width = pl->pl_width; 1714 1715 /* 1716 * If this is being called in scripted mode, or if this is the 1717 * last column and it is left-justified, don't include a width 1718 * format specifier. 1719 */ 1720 if (scripted || (pl->pl_next == NULL && !right_justify)) 1721 (void) printf("%s", propstr); 1722 else if (right_justify) 1723 (void) printf("%*s", width, propstr); 1724 else 1725 (void) printf("%-*s", width, propstr); 1726 } 1727 1728 (void) printf("\n"); 1729 } 1730 1731 /* 1732 * Generic callback function to list a dataset or snapshot. 1733 */ 1734 static int 1735 list_callback(zfs_handle_t *zhp, void *data) 1736 { 1737 list_cbdata_t *cbp = data; 1738 1739 if (cbp->cb_first) { 1740 if (!cbp->cb_scripted) 1741 print_header(cbp->cb_proplist); 1742 cbp->cb_first = B_FALSE; 1743 } 1744 1745 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted); 1746 1747 return (0); 1748 } 1749 1750 static int 1751 zfs_do_list(int argc, char **argv) 1752 { 1753 int c; 1754 boolean_t scripted = B_FALSE; 1755 static char default_fields[] = 1756 "name,used,available,referenced,mountpoint"; 1757 int types = ZFS_TYPE_DATASET; 1758 boolean_t types_specified = B_FALSE; 1759 char *fields = NULL; 1760 list_cbdata_t cb = { 0 }; 1761 char *value; 1762 int ret; 1763 zfs_sort_column_t *sortcol = NULL; 1764 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS; 1765 1766 /* check options */ 1767 while ((c = getopt(argc, argv, ":o:rt:Hs:S:")) != -1) { 1768 switch (c) { 1769 case 'o': 1770 fields = optarg; 1771 break; 1772 case 'r': 1773 flags |= ZFS_ITER_RECURSE; 1774 break; 1775 case 'H': 1776 scripted = B_TRUE; 1777 break; 1778 case 's': 1779 if (zfs_add_sort_column(&sortcol, optarg, 1780 B_FALSE) != 0) { 1781 (void) fprintf(stderr, 1782 gettext("invalid property '%s'\n"), optarg); 1783 usage(B_FALSE); 1784 } 1785 break; 1786 case 'S': 1787 if (zfs_add_sort_column(&sortcol, optarg, 1788 B_TRUE) != 0) { 1789 (void) fprintf(stderr, 1790 gettext("invalid property '%s'\n"), optarg); 1791 usage(B_FALSE); 1792 } 1793 break; 1794 case 't': 1795 types = 0; 1796 types_specified = B_TRUE; 1797 flags &= ~ZFS_ITER_PROP_LISTSNAPS; 1798 while (*optarg != '\0') { 1799 static char *type_subopts[] = { "filesystem", 1800 "volume", "snapshot", "all", NULL }; 1801 1802 switch (getsubopt(&optarg, type_subopts, 1803 &value)) { 1804 case 0: 1805 types |= ZFS_TYPE_FILESYSTEM; 1806 break; 1807 case 1: 1808 types |= ZFS_TYPE_VOLUME; 1809 break; 1810 case 2: 1811 types |= ZFS_TYPE_SNAPSHOT; 1812 break; 1813 case 3: 1814 types = ZFS_TYPE_DATASET; 1815 break; 1816 1817 default: 1818 (void) fprintf(stderr, 1819 gettext("invalid type '%s'\n"), 1820 value); 1821 usage(B_FALSE); 1822 } 1823 } 1824 break; 1825 case ':': 1826 (void) fprintf(stderr, gettext("missing argument for " 1827 "'%c' option\n"), optopt); 1828 usage(B_FALSE); 1829 break; 1830 case '?': 1831 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1832 optopt); 1833 usage(B_FALSE); 1834 } 1835 } 1836 1837 argc -= optind; 1838 argv += optind; 1839 1840 if (fields == NULL) 1841 fields = default_fields; 1842 1843 /* 1844 * If "-o space" and no types were specified, don't display snapshots. 1845 */ 1846 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE) 1847 types &= ~ZFS_TYPE_SNAPSHOT; 1848 1849 /* 1850 * If the user specifies '-o all', the zprop_get_list() doesn't 1851 * normally include the name of the dataset. For 'zfs list', we always 1852 * want this property to be first. 1853 */ 1854 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1855 != 0) 1856 usage(B_FALSE); 1857 1858 cb.cb_scripted = scripted; 1859 cb.cb_first = B_TRUE; 1860 1861 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist, 1862 list_callback, &cb); 1863 1864 zprop_free_list(cb.cb_proplist); 1865 zfs_free_sort_columns(sortcol); 1866 1867 if (ret == 0 && cb.cb_first && !cb.cb_scripted) 1868 (void) printf(gettext("no datasets available\n")); 1869 1870 return (ret); 1871 } 1872 1873 /* 1874 * zfs rename <fs | snap | vol> <fs | snap | vol> 1875 * zfs rename -p <fs | vol> <fs | vol> 1876 * zfs rename -r <snap> <snap> 1877 * 1878 * Renames the given dataset to another of the same type. 1879 * 1880 * The '-p' flag creates all the non-existing ancestors of the target first. 1881 */ 1882 /* ARGSUSED */ 1883 static int 1884 zfs_do_rename(int argc, char **argv) 1885 { 1886 zfs_handle_t *zhp; 1887 int c; 1888 int ret; 1889 boolean_t recurse = B_FALSE; 1890 boolean_t parents = B_FALSE; 1891 1892 /* check options */ 1893 while ((c = getopt(argc, argv, "pr")) != -1) { 1894 switch (c) { 1895 case 'p': 1896 parents = B_TRUE; 1897 break; 1898 case 'r': 1899 recurse = B_TRUE; 1900 break; 1901 case '?': 1902 default: 1903 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1904 optopt); 1905 usage(B_FALSE); 1906 } 1907 } 1908 1909 argc -= optind; 1910 argv += optind; 1911 1912 /* check number of arguments */ 1913 if (argc < 1) { 1914 (void) fprintf(stderr, gettext("missing source dataset " 1915 "argument\n")); 1916 usage(B_FALSE); 1917 } 1918 if (argc < 2) { 1919 (void) fprintf(stderr, gettext("missing target dataset " 1920 "argument\n")); 1921 usage(B_FALSE); 1922 } 1923 if (argc > 2) { 1924 (void) fprintf(stderr, gettext("too many arguments\n")); 1925 usage(B_FALSE); 1926 } 1927 1928 if (recurse && parents) { 1929 (void) fprintf(stderr, gettext("-p and -r options are mutually " 1930 "exclusive\n")); 1931 usage(B_FALSE); 1932 } 1933 1934 if (recurse && strchr(argv[0], '@') == 0) { 1935 (void) fprintf(stderr, gettext("source dataset for recursive " 1936 "rename must be a snapshot\n")); 1937 usage(B_FALSE); 1938 } 1939 1940 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM | 1941 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL) 1942 return (1); 1943 1944 /* If we were asked and the name looks good, try to create ancestors. */ 1945 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) && 1946 zfs_create_ancestors(g_zfs, argv[1]) != 0) { 1947 zfs_close(zhp); 1948 return (1); 1949 } 1950 1951 ret = (zfs_rename(zhp, argv[1], recurse) != 0); 1952 1953 zfs_close(zhp); 1954 return (ret); 1955 } 1956 1957 /* 1958 * zfs promote <fs> 1959 * 1960 * Promotes the given clone fs to be the parent 1961 */ 1962 /* ARGSUSED */ 1963 static int 1964 zfs_do_promote(int argc, char **argv) 1965 { 1966 zfs_handle_t *zhp; 1967 int ret; 1968 1969 /* check options */ 1970 if (argc > 1 && argv[1][0] == '-') { 1971 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1972 argv[1][1]); 1973 usage(B_FALSE); 1974 } 1975 1976 /* check number of arguments */ 1977 if (argc < 2) { 1978 (void) fprintf(stderr, gettext("missing clone filesystem" 1979 " argument\n")); 1980 usage(B_FALSE); 1981 } 1982 if (argc > 2) { 1983 (void) fprintf(stderr, gettext("too many arguments\n")); 1984 usage(B_FALSE); 1985 } 1986 1987 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 1988 if (zhp == NULL) 1989 return (1); 1990 1991 ret = (zfs_promote(zhp) != 0); 1992 1993 1994 zfs_close(zhp); 1995 return (ret); 1996 } 1997 1998 /* 1999 * zfs rollback [-rRf] <snapshot> 2000 * 2001 * -r Delete any intervening snapshots before doing rollback 2002 * -R Delete any snapshots and their clones 2003 * -f ignored for backwards compatability 2004 * 2005 * Given a filesystem, rollback to a specific snapshot, discarding any changes 2006 * since then and making it the active dataset. If more recent snapshots exist, 2007 * the command will complain unless the '-r' flag is given. 2008 */ 2009 typedef struct rollback_cbdata { 2010 uint64_t cb_create; 2011 boolean_t cb_first; 2012 int cb_doclones; 2013 char *cb_target; 2014 int cb_error; 2015 boolean_t cb_recurse; 2016 boolean_t cb_dependent; 2017 } rollback_cbdata_t; 2018 2019 /* 2020 * Report any snapshots more recent than the one specified. Used when '-r' is 2021 * not specified. We reuse this same callback for the snapshot dependents - if 2022 * 'cb_dependent' is set, then this is a dependent and we should report it 2023 * without checking the transaction group. 2024 */ 2025 static int 2026 rollback_check(zfs_handle_t *zhp, void *data) 2027 { 2028 rollback_cbdata_t *cbp = data; 2029 2030 if (cbp->cb_doclones) { 2031 zfs_close(zhp); 2032 return (0); 2033 } 2034 2035 if (!cbp->cb_dependent) { 2036 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 && 2037 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && 2038 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > 2039 cbp->cb_create) { 2040 2041 if (cbp->cb_first && !cbp->cb_recurse) { 2042 (void) fprintf(stderr, gettext("cannot " 2043 "rollback to '%s': more recent snapshots " 2044 "exist\n"), 2045 cbp->cb_target); 2046 (void) fprintf(stderr, gettext("use '-r' to " 2047 "force deletion of the following " 2048 "snapshots:\n")); 2049 cbp->cb_first = 0; 2050 cbp->cb_error = 1; 2051 } 2052 2053 if (cbp->cb_recurse) { 2054 cbp->cb_dependent = B_TRUE; 2055 if (zfs_iter_dependents(zhp, B_TRUE, 2056 rollback_check, cbp) != 0) { 2057 zfs_close(zhp); 2058 return (-1); 2059 } 2060 cbp->cb_dependent = B_FALSE; 2061 } else { 2062 (void) fprintf(stderr, "%s\n", 2063 zfs_get_name(zhp)); 2064 } 2065 } 2066 } else { 2067 if (cbp->cb_first && cbp->cb_recurse) { 2068 (void) fprintf(stderr, gettext("cannot rollback to " 2069 "'%s': clones of previous snapshots exist\n"), 2070 cbp->cb_target); 2071 (void) fprintf(stderr, gettext("use '-R' to " 2072 "force deletion of the following clones and " 2073 "dependents:\n")); 2074 cbp->cb_first = 0; 2075 cbp->cb_error = 1; 2076 } 2077 2078 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 2079 } 2080 2081 zfs_close(zhp); 2082 return (0); 2083 } 2084 2085 static int 2086 zfs_do_rollback(int argc, char **argv) 2087 { 2088 int ret; 2089 int c; 2090 boolean_t force = B_FALSE; 2091 rollback_cbdata_t cb = { 0 }; 2092 zfs_handle_t *zhp, *snap; 2093 char parentname[ZFS_MAXNAMELEN]; 2094 char *delim; 2095 2096 /* check options */ 2097 while ((c = getopt(argc, argv, "rRf")) != -1) { 2098 switch (c) { 2099 case 'r': 2100 cb.cb_recurse = 1; 2101 break; 2102 case 'R': 2103 cb.cb_recurse = 1; 2104 cb.cb_doclones = 1; 2105 break; 2106 case 'f': 2107 force = B_TRUE; 2108 break; 2109 case '?': 2110 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2111 optopt); 2112 usage(B_FALSE); 2113 } 2114 } 2115 2116 argc -= optind; 2117 argv += optind; 2118 2119 /* check number of arguments */ 2120 if (argc < 1) { 2121 (void) fprintf(stderr, gettext("missing dataset argument\n")); 2122 usage(B_FALSE); 2123 } 2124 if (argc > 1) { 2125 (void) fprintf(stderr, gettext("too many arguments\n")); 2126 usage(B_FALSE); 2127 } 2128 2129 /* open the snapshot */ 2130 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 2131 return (1); 2132 2133 /* open the parent dataset */ 2134 (void) strlcpy(parentname, argv[0], sizeof (parentname)); 2135 verify((delim = strrchr(parentname, '@')) != NULL); 2136 *delim = '\0'; 2137 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) { 2138 zfs_close(snap); 2139 return (1); 2140 } 2141 2142 /* 2143 * Check for more recent snapshots and/or clones based on the presence 2144 * of '-r' and '-R'. 2145 */ 2146 cb.cb_target = argv[0]; 2147 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 2148 cb.cb_first = B_TRUE; 2149 cb.cb_error = 0; 2150 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0) 2151 goto out; 2152 2153 if ((ret = cb.cb_error) != 0) 2154 goto out; 2155 2156 /* 2157 * Rollback parent to the given snapshot. 2158 */ 2159 ret = zfs_rollback(zhp, snap, force); 2160 2161 out: 2162 zfs_close(snap); 2163 zfs_close(zhp); 2164 2165 if (ret == 0) 2166 return (0); 2167 else 2168 return (1); 2169 } 2170 2171 /* 2172 * zfs set property=value { fs | snap | vol } ... 2173 * 2174 * Sets the given property for all datasets specified on the command line. 2175 */ 2176 typedef struct set_cbdata { 2177 char *cb_propname; 2178 char *cb_value; 2179 } set_cbdata_t; 2180 2181 static int 2182 set_callback(zfs_handle_t *zhp, void *data) 2183 { 2184 set_cbdata_t *cbp = data; 2185 2186 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) { 2187 switch (libzfs_errno(g_zfs)) { 2188 case EZFS_MOUNTFAILED: 2189 (void) fprintf(stderr, gettext("property may be set " 2190 "but unable to remount filesystem\n")); 2191 break; 2192 case EZFS_SHARENFSFAILED: 2193 (void) fprintf(stderr, gettext("property may be set " 2194 "but unable to reshare filesystem\n")); 2195 break; 2196 } 2197 return (1); 2198 } 2199 return (0); 2200 } 2201 2202 static int 2203 zfs_do_set(int argc, char **argv) 2204 { 2205 set_cbdata_t cb; 2206 int ret; 2207 2208 /* check for options */ 2209 if (argc > 1 && argv[1][0] == '-') { 2210 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2211 argv[1][1]); 2212 usage(B_FALSE); 2213 } 2214 2215 /* check number of arguments */ 2216 if (argc < 2) { 2217 (void) fprintf(stderr, gettext("missing property=value " 2218 "argument\n")); 2219 usage(B_FALSE); 2220 } 2221 if (argc < 3) { 2222 (void) fprintf(stderr, gettext("missing dataset name\n")); 2223 usage(B_FALSE); 2224 } 2225 2226 /* validate property=value argument */ 2227 cb.cb_propname = argv[1]; 2228 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) || 2229 (cb.cb_value[1] == '\0')) { 2230 (void) fprintf(stderr, gettext("missing value in " 2231 "property=value argument\n")); 2232 usage(B_FALSE); 2233 } 2234 2235 *cb.cb_value = '\0'; 2236 cb.cb_value++; 2237 2238 if (*cb.cb_propname == '\0') { 2239 (void) fprintf(stderr, 2240 gettext("missing property in property=value argument\n")); 2241 usage(B_FALSE); 2242 } 2243 2244 ret = zfs_for_each(argc - 2, argv + 2, NULL, 2245 ZFS_TYPE_DATASET, NULL, NULL, set_callback, &cb); 2246 2247 return (ret); 2248 } 2249 2250 /* 2251 * zfs snapshot [-r] [-o prop=value] ... <fs@snap> 2252 * 2253 * Creates a snapshot with the given name. While functionally equivalent to 2254 * 'zfs create', it is a separate command to differentiate intent. 2255 */ 2256 static int 2257 zfs_do_snapshot(int argc, char **argv) 2258 { 2259 boolean_t recursive = B_FALSE; 2260 int ret; 2261 char c; 2262 nvlist_t *props; 2263 2264 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 2265 (void) fprintf(stderr, gettext("internal error: " 2266 "out of memory\n")); 2267 return (1); 2268 } 2269 2270 /* check options */ 2271 while ((c = getopt(argc, argv, "ro:")) != -1) { 2272 switch (c) { 2273 case 'o': 2274 if (parseprop(props)) 2275 return (1); 2276 break; 2277 case 'r': 2278 recursive = B_TRUE; 2279 break; 2280 case '?': 2281 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2282 optopt); 2283 goto usage; 2284 } 2285 } 2286 2287 argc -= optind; 2288 argv += optind; 2289 2290 /* check number of arguments */ 2291 if (argc < 1) { 2292 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2293 goto usage; 2294 } 2295 if (argc > 1) { 2296 (void) fprintf(stderr, gettext("too many arguments\n")); 2297 goto usage; 2298 } 2299 2300 ret = zfs_snapshot(g_zfs, argv[0], recursive, props); 2301 nvlist_free(props); 2302 if (ret && recursive) 2303 (void) fprintf(stderr, gettext("no snapshots were created\n")); 2304 return (ret != 0); 2305 2306 usage: 2307 nvlist_free(props); 2308 usage(B_FALSE); 2309 return (-1); 2310 } 2311 2312 /* 2313 * zfs send [-v] -R [-i|-I <@snap>] <fs@snap> 2314 * zfs send [-v] [-i|-I <@snap>] <fs@snap> 2315 * 2316 * Send a backup stream to stdout. 2317 */ 2318 static int 2319 zfs_do_send(int argc, char **argv) 2320 { 2321 char *fromname = NULL; 2322 char *toname = NULL; 2323 char *cp; 2324 zfs_handle_t *zhp; 2325 boolean_t doall = B_FALSE; 2326 boolean_t replicate = B_FALSE; 2327 boolean_t fromorigin = B_FALSE; 2328 boolean_t verbose = B_FALSE; 2329 int c, err; 2330 2331 /* check options */ 2332 while ((c = getopt(argc, argv, ":i:I:Rv")) != -1) { 2333 switch (c) { 2334 case 'i': 2335 if (fromname) 2336 usage(B_FALSE); 2337 fromname = optarg; 2338 break; 2339 case 'I': 2340 if (fromname) 2341 usage(B_FALSE); 2342 fromname = optarg; 2343 doall = B_TRUE; 2344 break; 2345 case 'R': 2346 replicate = B_TRUE; 2347 break; 2348 case 'v': 2349 verbose = B_TRUE; 2350 break; 2351 case ':': 2352 (void) fprintf(stderr, gettext("missing argument for " 2353 "'%c' option\n"), optopt); 2354 usage(B_FALSE); 2355 break; 2356 case '?': 2357 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2358 optopt); 2359 usage(B_FALSE); 2360 } 2361 } 2362 2363 argc -= optind; 2364 argv += optind; 2365 2366 /* check number of arguments */ 2367 if (argc < 1) { 2368 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2369 usage(B_FALSE); 2370 } 2371 if (argc > 1) { 2372 (void) fprintf(stderr, gettext("too many arguments\n")); 2373 usage(B_FALSE); 2374 } 2375 2376 if (isatty(STDOUT_FILENO)) { 2377 (void) fprintf(stderr, 2378 gettext("Error: Stream can not be written to a terminal.\n" 2379 "You must redirect standard output.\n")); 2380 return (1); 2381 } 2382 2383 cp = strchr(argv[0], '@'); 2384 if (cp == NULL) { 2385 (void) fprintf(stderr, 2386 gettext("argument must be a snapshot\n")); 2387 usage(B_FALSE); 2388 } 2389 *cp = '\0'; 2390 toname = cp + 1; 2391 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2392 if (zhp == NULL) 2393 return (1); 2394 2395 /* 2396 * If they specified the full path to the snapshot, chop off 2397 * everything except the short name of the snapshot, but special 2398 * case if they specify the origin. 2399 */ 2400 if (fromname && (cp = strchr(fromname, '@')) != NULL) { 2401 char origin[ZFS_MAXNAMELEN]; 2402 zprop_source_t src; 2403 2404 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN, 2405 origin, sizeof (origin), &src, NULL, 0, B_FALSE); 2406 2407 if (strcmp(origin, fromname) == 0) { 2408 fromname = NULL; 2409 fromorigin = B_TRUE; 2410 } else { 2411 *cp = '\0'; 2412 if (cp != fromname && strcmp(argv[0], fromname)) { 2413 (void) fprintf(stderr, 2414 gettext("incremental source must be " 2415 "in same filesystem\n")); 2416 usage(B_FALSE); 2417 } 2418 fromname = cp + 1; 2419 if (strchr(fromname, '@') || strchr(fromname, '/')) { 2420 (void) fprintf(stderr, 2421 gettext("invalid incremental source\n")); 2422 usage(B_FALSE); 2423 } 2424 } 2425 } 2426 2427 if (replicate && fromname == NULL) 2428 doall = B_TRUE; 2429 2430 err = zfs_send(zhp, fromname, toname, replicate, doall, fromorigin, 2431 verbose, STDOUT_FILENO); 2432 zfs_close(zhp); 2433 2434 return (err != 0); 2435 } 2436 2437 /* 2438 * zfs receive [-dnvF] <fs@snap> 2439 * 2440 * Restore a backup stream from stdin. 2441 */ 2442 static int 2443 zfs_do_receive(int argc, char **argv) 2444 { 2445 int c, err; 2446 recvflags_t flags; 2447 2448 bzero(&flags, sizeof (recvflags_t)); 2449 /* check options */ 2450 while ((c = getopt(argc, argv, ":dnvF")) != -1) { 2451 switch (c) { 2452 case 'd': 2453 flags.isprefix = B_TRUE; 2454 break; 2455 case 'n': 2456 flags.dryrun = B_TRUE; 2457 break; 2458 case 'v': 2459 flags.verbose = B_TRUE; 2460 break; 2461 case 'F': 2462 flags.force = B_TRUE; 2463 break; 2464 case ':': 2465 (void) fprintf(stderr, gettext("missing argument for " 2466 "'%c' option\n"), optopt); 2467 usage(B_FALSE); 2468 break; 2469 case '?': 2470 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2471 optopt); 2472 usage(B_FALSE); 2473 } 2474 } 2475 2476 argc -= optind; 2477 argv += optind; 2478 2479 /* check number of arguments */ 2480 if (argc < 1) { 2481 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2482 usage(B_FALSE); 2483 } 2484 if (argc > 1) { 2485 (void) fprintf(stderr, gettext("too many arguments\n")); 2486 usage(B_FALSE); 2487 } 2488 2489 if (isatty(STDIN_FILENO)) { 2490 (void) fprintf(stderr, 2491 gettext("Error: Backup stream can not be read " 2492 "from a terminal.\n" 2493 "You must redirect standard input.\n")); 2494 return (1); 2495 } 2496 2497 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL); 2498 2499 return (err != 0); 2500 } 2501 2502 typedef struct allow_cb { 2503 int a_permcnt; 2504 size_t a_treeoffset; 2505 } allow_cb_t; 2506 2507 static void 2508 zfs_print_perms(avl_tree_t *tree) 2509 { 2510 zfs_perm_node_t *permnode; 2511 2512 permnode = avl_first(tree); 2513 while (permnode != NULL) { 2514 (void) printf("%s", permnode->z_pname); 2515 permnode = AVL_NEXT(tree, permnode); 2516 if (permnode) 2517 (void) printf(","); 2518 else 2519 (void) printf("\n"); 2520 } 2521 } 2522 2523 /* 2524 * Iterate over user/groups/everyone/... and the call perm_iter 2525 * function to print actual permission when tree has >0 nodes. 2526 */ 2527 static void 2528 zfs_iter_perms(avl_tree_t *tree, const char *banner, allow_cb_t *cb) 2529 { 2530 zfs_allow_node_t *item; 2531 avl_tree_t *ptree; 2532 2533 item = avl_first(tree); 2534 while (item) { 2535 ptree = (void *)((char *)item + cb->a_treeoffset); 2536 if (avl_numnodes(ptree)) { 2537 if (cb->a_permcnt++ == 0) 2538 (void) printf("%s\n", banner); 2539 (void) printf("\t%s", item->z_key); 2540 /* 2541 * Avoid an extra space being printed 2542 * for "everyone" which is keyed with a null 2543 * string 2544 */ 2545 if (item->z_key[0] != '\0') 2546 (void) printf(" "); 2547 zfs_print_perms(ptree); 2548 } 2549 item = AVL_NEXT(tree, item); 2550 } 2551 } 2552 2553 #define LINES "-------------------------------------------------------------\n" 2554 static int 2555 zfs_print_allows(char *ds) 2556 { 2557 zfs_allow_t *curperms, *perms; 2558 zfs_handle_t *zhp; 2559 allow_cb_t allowcb = { 0 }; 2560 char banner[MAXPATHLEN]; 2561 2562 if (ds[0] == '-') 2563 usage(B_FALSE); 2564 2565 if (strrchr(ds, '@')) { 2566 (void) fprintf(stderr, gettext("Snapshots don't have 'allow'" 2567 " permissions\n")); 2568 return (1); 2569 } 2570 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL) 2571 return (1); 2572 2573 if (zfs_perm_get(zhp, &perms)) { 2574 (void) fprintf(stderr, 2575 gettext("Failed to retrieve 'allows' on %s\n"), ds); 2576 zfs_close(zhp); 2577 return (1); 2578 } 2579 2580 zfs_close(zhp); 2581 2582 if (perms != NULL) 2583 (void) printf("%s", LINES); 2584 for (curperms = perms; curperms; curperms = curperms->z_next) { 2585 2586 (void) snprintf(banner, sizeof (banner), 2587 "Permission sets on (%s)", curperms->z_setpoint); 2588 allowcb.a_treeoffset = 2589 offsetof(zfs_allow_node_t, z_localdescend); 2590 allowcb.a_permcnt = 0; 2591 zfs_iter_perms(&curperms->z_sets, banner, &allowcb); 2592 2593 (void) snprintf(banner, sizeof (banner), 2594 "Create time permissions on (%s)", curperms->z_setpoint); 2595 allowcb.a_treeoffset = 2596 offsetof(zfs_allow_node_t, z_localdescend); 2597 allowcb.a_permcnt = 0; 2598 zfs_iter_perms(&curperms->z_crperms, banner, &allowcb); 2599 2600 2601 (void) snprintf(banner, sizeof (banner), 2602 "Local permissions on (%s)", curperms->z_setpoint); 2603 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_local); 2604 allowcb.a_permcnt = 0; 2605 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2606 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2607 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2608 2609 (void) snprintf(banner, sizeof (banner), 2610 "Descendent permissions on (%s)", curperms->z_setpoint); 2611 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_descend); 2612 allowcb.a_permcnt = 0; 2613 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2614 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2615 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2616 2617 (void) snprintf(banner, sizeof (banner), 2618 "Local+Descendent permissions on (%s)", 2619 curperms->z_setpoint); 2620 allowcb.a_treeoffset = 2621 offsetof(zfs_allow_node_t, z_localdescend); 2622 allowcb.a_permcnt = 0; 2623 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2624 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2625 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2626 2627 (void) printf("%s", LINES); 2628 } 2629 zfs_free_allows(perms); 2630 return (0); 2631 } 2632 2633 #define ALLOWOPTIONS "ldcsu:g:e" 2634 #define UNALLOWOPTIONS "ldcsu:g:er" 2635 2636 /* 2637 * Validate options, and build necessary datastructure to display/remove/add 2638 * permissions. 2639 * Returns 0 - If permissions should be added/removed 2640 * Returns 1 - If permissions should be displayed. 2641 * Returns -1 - on failure 2642 */ 2643 int 2644 parse_allow_args(int *argc, char **argv[], boolean_t unallow, 2645 char **ds, int *recurse, nvlist_t **zperms) 2646 { 2647 int c; 2648 char *options = unallow ? UNALLOWOPTIONS : ALLOWOPTIONS; 2649 zfs_deleg_inherit_t deleg_type = ZFS_DELEG_NONE; 2650 zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN; 2651 char *who = NULL; 2652 char *perms = NULL; 2653 zfs_handle_t *zhp; 2654 2655 while ((c = getopt(*argc, *argv, options)) != -1) { 2656 switch (c) { 2657 case 'l': 2658 if (who_type == ZFS_DELEG_CREATE || 2659 who_type == ZFS_DELEG_NAMED_SET) 2660 usage(B_FALSE); 2661 2662 deleg_type |= ZFS_DELEG_PERM_LOCAL; 2663 break; 2664 case 'd': 2665 if (who_type == ZFS_DELEG_CREATE || 2666 who_type == ZFS_DELEG_NAMED_SET) 2667 usage(B_FALSE); 2668 2669 deleg_type |= ZFS_DELEG_PERM_DESCENDENT; 2670 break; 2671 case 'r': 2672 *recurse = B_TRUE; 2673 break; 2674 case 'c': 2675 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2676 usage(B_FALSE); 2677 if (deleg_type) 2678 usage(B_FALSE); 2679 who_type = ZFS_DELEG_CREATE; 2680 break; 2681 case 's': 2682 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2683 usage(B_FALSE); 2684 if (deleg_type) 2685 usage(B_FALSE); 2686 who_type = ZFS_DELEG_NAMED_SET; 2687 break; 2688 case 'u': 2689 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2690 usage(B_FALSE); 2691 who_type = ZFS_DELEG_USER; 2692 who = optarg; 2693 break; 2694 case 'g': 2695 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2696 usage(B_FALSE); 2697 who_type = ZFS_DELEG_GROUP; 2698 who = optarg; 2699 break; 2700 case 'e': 2701 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2702 usage(B_FALSE); 2703 who_type = ZFS_DELEG_EVERYONE; 2704 break; 2705 default: 2706 usage(B_FALSE); 2707 break; 2708 } 2709 } 2710 2711 if (deleg_type == 0) 2712 deleg_type = ZFS_DELEG_PERM_LOCALDESCENDENT; 2713 2714 *argc -= optind; 2715 *argv += optind; 2716 2717 if (unallow == B_FALSE && *argc == 1) { 2718 /* 2719 * Only print permissions if no options were processed 2720 */ 2721 if (optind == 1) 2722 return (1); 2723 else 2724 usage(B_FALSE); 2725 } 2726 2727 /* 2728 * initialize variables for zfs_build_perms based on number 2729 * of arguments. 2730 * 3 arguments ==> zfs [un]allow joe perm,perm,perm <dataset> or 2731 * zfs [un]allow -s @set1 perm,perm <dataset> 2732 * 2 arguments ==> zfs [un]allow -c perm,perm <dataset> or 2733 * zfs [un]allow -u|-g <name> perm <dataset> or 2734 * zfs [un]allow -e perm,perm <dataset> 2735 * zfs unallow joe <dataset> 2736 * zfs unallow -s @set1 <dataset> 2737 * 1 argument ==> zfs [un]allow -e <dataset> or 2738 * zfs [un]allow -c <dataset> 2739 */ 2740 2741 switch (*argc) { 2742 case 3: 2743 perms = (*argv)[1]; 2744 who = (*argv)[0]; 2745 *ds = (*argv)[2]; 2746 2747 /* 2748 * advance argc/argv for do_allow cases. 2749 * for do_allow case make sure who have a know who type 2750 * and its not a permission set. 2751 */ 2752 if (unallow == B_TRUE) { 2753 *argc -= 2; 2754 *argv += 2; 2755 } else if (who_type != ZFS_DELEG_WHO_UNKNOWN && 2756 who_type != ZFS_DELEG_NAMED_SET) 2757 usage(B_FALSE); 2758 break; 2759 2760 case 2: 2761 if (unallow == B_TRUE && (who_type == ZFS_DELEG_EVERYONE || 2762 who_type == ZFS_DELEG_CREATE || who != NULL)) { 2763 perms = (*argv)[0]; 2764 *ds = (*argv)[1]; 2765 } else { 2766 if (unallow == B_FALSE && 2767 (who_type == ZFS_DELEG_WHO_UNKNOWN || 2768 who_type == ZFS_DELEG_NAMED_SET)) 2769 usage(B_FALSE); 2770 else if (who_type == ZFS_DELEG_WHO_UNKNOWN || 2771 who_type == ZFS_DELEG_NAMED_SET) 2772 who = (*argv)[0]; 2773 else if (who_type != ZFS_DELEG_NAMED_SET) 2774 perms = (*argv)[0]; 2775 *ds = (*argv)[1]; 2776 } 2777 if (unallow == B_TRUE) { 2778 (*argc)--; 2779 (*argv)++; 2780 } 2781 break; 2782 2783 case 1: 2784 if (unallow == B_FALSE) 2785 usage(B_FALSE); 2786 if (who == NULL && who_type != ZFS_DELEG_CREATE && 2787 who_type != ZFS_DELEG_EVERYONE) 2788 usage(B_FALSE); 2789 *ds = (*argv)[0]; 2790 break; 2791 2792 default: 2793 usage(B_FALSE); 2794 } 2795 2796 if (strrchr(*ds, '@')) { 2797 (void) fprintf(stderr, 2798 gettext("Can't set or remove 'allow' permissions " 2799 "on snapshots.\n")); 2800 return (-1); 2801 } 2802 2803 if ((zhp = zfs_open(g_zfs, *ds, ZFS_TYPE_DATASET)) == NULL) 2804 return (-1); 2805 2806 if ((zfs_build_perms(zhp, who, perms, 2807 who_type, deleg_type, zperms)) != 0) { 2808 zfs_close(zhp); 2809 return (-1); 2810 } 2811 zfs_close(zhp); 2812 return (0); 2813 } 2814 2815 static int 2816 zfs_do_allow(int argc, char **argv) 2817 { 2818 char *ds; 2819 nvlist_t *zperms = NULL; 2820 zfs_handle_t *zhp; 2821 int unused; 2822 int ret; 2823 2824 if ((ret = parse_allow_args(&argc, &argv, B_FALSE, &ds, 2825 &unused, &zperms)) == -1) 2826 return (1); 2827 2828 if (ret == 1) 2829 return (zfs_print_allows(argv[0])); 2830 2831 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL) 2832 return (1); 2833 2834 if (zfs_perm_set(zhp, zperms)) { 2835 zfs_close(zhp); 2836 nvlist_free(zperms); 2837 return (1); 2838 } 2839 nvlist_free(zperms); 2840 zfs_close(zhp); 2841 2842 return (0); 2843 } 2844 2845 static int 2846 unallow_callback(zfs_handle_t *zhp, void *data) 2847 { 2848 nvlist_t *nvp = (nvlist_t *)data; 2849 int error; 2850 2851 error = zfs_perm_remove(zhp, nvp); 2852 if (error) { 2853 (void) fprintf(stderr, gettext("Failed to remove permissions " 2854 "on %s\n"), zfs_get_name(zhp)); 2855 } 2856 return (error); 2857 } 2858 2859 static int 2860 zfs_do_unallow(int argc, char **argv) 2861 { 2862 int recurse = B_FALSE; 2863 char *ds; 2864 int error; 2865 nvlist_t *zperms = NULL; 2866 int flags = 0; 2867 2868 if (parse_allow_args(&argc, &argv, B_TRUE, 2869 &ds, &recurse, &zperms) == -1) 2870 return (1); 2871 2872 if (recurse) 2873 flags |= ZFS_ITER_RECURSE; 2874 error = zfs_for_each(argc, argv, flags, 2875 ZFS_TYPE_FILESYSTEM|ZFS_TYPE_VOLUME, NULL, 2876 NULL, unallow_callback, (void *)zperms); 2877 2878 if (zperms) 2879 nvlist_free(zperms); 2880 2881 return (error); 2882 } 2883 2884 typedef struct get_all_cbdata { 2885 zfs_handle_t **cb_handles; 2886 size_t cb_alloc; 2887 size_t cb_used; 2888 uint_t cb_types; 2889 boolean_t cb_verbose; 2890 } get_all_cbdata_t; 2891 2892 #define CHECK_SPINNER 30 2893 #define SPINNER_TIME 3 /* seconds */ 2894 #define MOUNT_TIME 5 /* seconds */ 2895 2896 static int 2897 get_one_dataset(zfs_handle_t *zhp, void *data) 2898 { 2899 static char spin[] = { '-', '\\', '|', '/' }; 2900 static int spinval = 0; 2901 static int spincheck = 0; 2902 static time_t last_spin_time = (time_t)0; 2903 get_all_cbdata_t *cbp = data; 2904 zfs_type_t type = zfs_get_type(zhp); 2905 2906 if (cbp->cb_verbose) { 2907 if (--spincheck < 0) { 2908 time_t now = time(NULL); 2909 if (last_spin_time + SPINNER_TIME < now) { 2910 (void) printf("\b%c", spin[spinval++ % 4]); 2911 (void) fflush(stdout); 2912 last_spin_time = now; 2913 } 2914 spincheck = CHECK_SPINNER; 2915 } 2916 } 2917 2918 /* 2919 * Interate over any nested datasets. 2920 */ 2921 if (type == ZFS_TYPE_FILESYSTEM && 2922 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) { 2923 zfs_close(zhp); 2924 return (1); 2925 } 2926 2927 /* 2928 * Skip any datasets whose type does not match. 2929 */ 2930 if ((type & cbp->cb_types) == 0) { 2931 zfs_close(zhp); 2932 return (0); 2933 } 2934 2935 if (cbp->cb_alloc == cbp->cb_used) { 2936 zfs_handle_t **handles; 2937 2938 if (cbp->cb_alloc == 0) 2939 cbp->cb_alloc = 64; 2940 else 2941 cbp->cb_alloc *= 2; 2942 2943 handles = safe_malloc(cbp->cb_alloc * sizeof (void *)); 2944 2945 if (cbp->cb_handles) { 2946 bcopy(cbp->cb_handles, handles, 2947 cbp->cb_used * sizeof (void *)); 2948 free(cbp->cb_handles); 2949 } 2950 2951 cbp->cb_handles = handles; 2952 } 2953 2954 cbp->cb_handles[cbp->cb_used++] = zhp; 2955 2956 return (0); 2957 } 2958 2959 static void 2960 get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count, 2961 boolean_t verbose) 2962 { 2963 get_all_cbdata_t cb = { 0 }; 2964 cb.cb_types = types; 2965 cb.cb_verbose = verbose; 2966 2967 if (verbose) { 2968 (void) printf("%s: *", gettext("Reading ZFS config")); 2969 (void) fflush(stdout); 2970 } 2971 2972 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb); 2973 2974 *dslist = cb.cb_handles; 2975 *count = cb.cb_used; 2976 2977 if (verbose) { 2978 (void) printf("\b%s\n", gettext("done.")); 2979 } 2980 } 2981 2982 static int 2983 dataset_cmp(const void *a, const void *b) 2984 { 2985 zfs_handle_t **za = (zfs_handle_t **)a; 2986 zfs_handle_t **zb = (zfs_handle_t **)b; 2987 char mounta[MAXPATHLEN]; 2988 char mountb[MAXPATHLEN]; 2989 boolean_t gota, gotb; 2990 2991 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0) 2992 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta, 2993 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0); 2994 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0) 2995 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb, 2996 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0); 2997 2998 if (gota && gotb) 2999 return (strcmp(mounta, mountb)); 3000 3001 if (gota) 3002 return (-1); 3003 if (gotb) 3004 return (1); 3005 3006 return (strcmp(zfs_get_name(a), zfs_get_name(b))); 3007 } 3008 3009 /* 3010 * Generic callback for sharing or mounting filesystems. Because the code is so 3011 * similar, we have a common function with an extra parameter to determine which 3012 * mode we are using. 3013 */ 3014 #define OP_SHARE 0x1 3015 #define OP_MOUNT 0x2 3016 3017 /* 3018 * Share or mount a dataset. 3019 */ 3020 static int 3021 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol, 3022 boolean_t explicit, const char *options) 3023 { 3024 char mountpoint[ZFS_MAXPROPLEN]; 3025 char shareopts[ZFS_MAXPROPLEN]; 3026 char smbshareopts[ZFS_MAXPROPLEN]; 3027 const char *cmdname = op == OP_SHARE ? "share" : "mount"; 3028 struct mnttab mnt; 3029 uint64_t zoned, canmount; 3030 zfs_type_t type = zfs_get_type(zhp); 3031 boolean_t shared_nfs, shared_smb; 3032 3033 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)); 3034 3035 if (type == ZFS_TYPE_FILESYSTEM) { 3036 /* 3037 * Check to make sure we can mount/share this dataset. If we 3038 * are in the global zone and the filesystem is exported to a 3039 * local zone, or if we are in a local zone and the 3040 * filesystem is not exported, then it is an error. 3041 */ 3042 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 3043 3044 if (zoned && getzoneid() == GLOBAL_ZONEID) { 3045 if (!explicit) 3046 return (0); 3047 3048 (void) fprintf(stderr, gettext("cannot %s '%s': " 3049 "dataset is exported to a local zone\n"), cmdname, 3050 zfs_get_name(zhp)); 3051 return (1); 3052 3053 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) { 3054 if (!explicit) 3055 return (0); 3056 3057 (void) fprintf(stderr, gettext("cannot %s '%s': " 3058 "permission denied\n"), cmdname, 3059 zfs_get_name(zhp)); 3060 return (1); 3061 } 3062 3063 /* 3064 * Ignore any filesystems which don't apply to us. This 3065 * includes those with a legacy mountpoint, or those with 3066 * legacy share options. 3067 */ 3068 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 3069 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0); 3070 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts, 3071 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3072 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts, 3073 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0); 3074 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 3075 3076 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 && 3077 strcmp(smbshareopts, "off") == 0) { 3078 if (!explicit) 3079 return (0); 3080 3081 (void) fprintf(stderr, gettext("cannot share '%s': " 3082 "legacy share\n"), zfs_get_name(zhp)); 3083 (void) fprintf(stderr, gettext("use share(1M) to " 3084 "share this filesystem\n")); 3085 return (1); 3086 } 3087 3088 /* 3089 * We cannot share or mount legacy filesystems. If the 3090 * shareopts is non-legacy but the mountpoint is legacy, we 3091 * treat it as a legacy share. 3092 */ 3093 if (strcmp(mountpoint, "legacy") == 0) { 3094 if (!explicit) 3095 return (0); 3096 3097 (void) fprintf(stderr, gettext("cannot %s '%s': " 3098 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp)); 3099 (void) fprintf(stderr, gettext("use %s(1M) to " 3100 "%s this filesystem\n"), cmdname, cmdname); 3101 return (1); 3102 } 3103 3104 if (strcmp(mountpoint, "none") == 0) { 3105 if (!explicit) 3106 return (0); 3107 3108 (void) fprintf(stderr, gettext("cannot %s '%s': no " 3109 "mountpoint set\n"), cmdname, zfs_get_name(zhp)); 3110 return (1); 3111 } 3112 3113 /* 3114 * canmount explicit outcome 3115 * on no pass through 3116 * on yes pass through 3117 * off no return 0 3118 * off yes display error, return 1 3119 * noauto no return 0 3120 * noauto yes pass through 3121 */ 3122 if (canmount == ZFS_CANMOUNT_OFF) { 3123 if (!explicit) 3124 return (0); 3125 3126 (void) fprintf(stderr, gettext("cannot %s '%s': " 3127 "'canmount' property is set to 'off'\n"), cmdname, 3128 zfs_get_name(zhp)); 3129 return (1); 3130 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) { 3131 return (0); 3132 } 3133 3134 /* 3135 * At this point, we have verified that the mountpoint and/or 3136 * shareopts are appropriate for auto management. If the 3137 * filesystem is already mounted or shared, return (failing 3138 * for explicit requests); otherwise mount or share the 3139 * filesystem. 3140 */ 3141 switch (op) { 3142 case OP_SHARE: 3143 3144 shared_nfs = zfs_is_shared_nfs(zhp, NULL); 3145 shared_smb = zfs_is_shared_smb(zhp, NULL); 3146 3147 if (shared_nfs && shared_smb || 3148 (shared_nfs && strcmp(shareopts, "on") == 0 && 3149 strcmp(smbshareopts, "off") == 0) || 3150 (shared_smb && strcmp(smbshareopts, "on") == 0 && 3151 strcmp(shareopts, "off") == 0)) { 3152 if (!explicit) 3153 return (0); 3154 3155 (void) fprintf(stderr, gettext("cannot share " 3156 "'%s': filesystem already shared\n"), 3157 zfs_get_name(zhp)); 3158 return (1); 3159 } 3160 3161 if (!zfs_is_mounted(zhp, NULL) && 3162 zfs_mount(zhp, NULL, 0) != 0) 3163 return (1); 3164 3165 if (protocol == NULL) { 3166 if (zfs_shareall(zhp) != 0) 3167 return (1); 3168 } else if (strcmp(protocol, "nfs") == 0) { 3169 if (zfs_share_nfs(zhp)) 3170 return (1); 3171 } else if (strcmp(protocol, "smb") == 0) { 3172 if (zfs_share_smb(zhp)) 3173 return (1); 3174 } else { 3175 (void) fprintf(stderr, gettext("cannot share " 3176 "'%s': invalid share type '%s' " 3177 "specified\n"), 3178 zfs_get_name(zhp), protocol); 3179 return (1); 3180 } 3181 3182 break; 3183 3184 case OP_MOUNT: 3185 if (options == NULL) 3186 mnt.mnt_mntopts = ""; 3187 else 3188 mnt.mnt_mntopts = (char *)options; 3189 3190 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) && 3191 zfs_is_mounted(zhp, NULL)) { 3192 if (!explicit) 3193 return (0); 3194 3195 (void) fprintf(stderr, gettext("cannot mount " 3196 "'%s': filesystem already mounted\n"), 3197 zfs_get_name(zhp)); 3198 return (1); 3199 } 3200 3201 if (zfs_mount(zhp, options, flags) != 0) 3202 return (1); 3203 break; 3204 } 3205 } else { 3206 assert(op == OP_SHARE); 3207 3208 /* 3209 * Ignore any volumes that aren't shared. 3210 */ 3211 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts, 3212 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3213 3214 if (strcmp(shareopts, "off") == 0) { 3215 if (!explicit) 3216 return (0); 3217 3218 (void) fprintf(stderr, gettext("cannot share '%s': " 3219 "'shareiscsi' property not set\n"), 3220 zfs_get_name(zhp)); 3221 (void) fprintf(stderr, gettext("set 'shareiscsi' " 3222 "property or use iscsitadm(1M) to share this " 3223 "volume\n")); 3224 return (1); 3225 } 3226 3227 if (zfs_is_shared_iscsi(zhp)) { 3228 if (!explicit) 3229 return (0); 3230 3231 (void) fprintf(stderr, gettext("cannot share " 3232 "'%s': volume already shared\n"), 3233 zfs_get_name(zhp)); 3234 return (1); 3235 } 3236 3237 if (zfs_share_iscsi(zhp) != 0) 3238 return (1); 3239 } 3240 3241 return (0); 3242 } 3243 3244 /* 3245 * Reports progress in the form "(current/total)". Not thread-safe. 3246 */ 3247 static void 3248 report_mount_progress(int current, int total) 3249 { 3250 static int len; 3251 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b" 3252 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"; 3253 static time_t last_progress_time; 3254 time_t now = time(NULL); 3255 3256 /* report 1..n instead of 0..n-1 */ 3257 ++current; 3258 3259 /* display header if we're here for the first time */ 3260 if (current == 1) { 3261 (void) printf(gettext("Mounting ZFS filesystems: ")); 3262 len = 0; 3263 } else if (current != total && last_progress_time + MOUNT_TIME >= now) { 3264 /* too soon to report again */ 3265 return; 3266 } 3267 3268 last_progress_time = now; 3269 3270 /* back up to prepare for overwriting */ 3271 if (len) 3272 (void) printf("%*.*s", len, len, reverse); 3273 3274 /* We put a newline at the end if this is the last one. */ 3275 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : ""); 3276 (void) fflush(stdout); 3277 } 3278 3279 static void 3280 append_options(char *mntopts, char *newopts) 3281 { 3282 int len = strlen(mntopts); 3283 3284 /* original length plus new string to append plus 1 for the comma */ 3285 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) { 3286 (void) fprintf(stderr, gettext("the opts argument for " 3287 "'%c' option is too long (more than %d chars)\n"), 3288 "-o", MNT_LINE_MAX); 3289 usage(B_FALSE); 3290 } 3291 3292 if (*mntopts) 3293 mntopts[len++] = ','; 3294 3295 (void) strcpy(&mntopts[len], newopts); 3296 } 3297 3298 static int 3299 share_mount(int op, int argc, char **argv) 3300 { 3301 int do_all = 0; 3302 boolean_t verbose = B_FALSE; 3303 int c, ret = 0; 3304 char *options = NULL; 3305 int types, flags = 0; 3306 3307 /* check options */ 3308 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a")) 3309 != -1) { 3310 switch (c) { 3311 case 'a': 3312 do_all = 1; 3313 break; 3314 case 'v': 3315 verbose = B_TRUE; 3316 break; 3317 case 'o': 3318 if (*optarg == '\0') { 3319 (void) fprintf(stderr, gettext("empty mount " 3320 "options (-o) specified\n")); 3321 usage(B_FALSE); 3322 } 3323 3324 if (options == NULL) 3325 options = safe_malloc(MNT_LINE_MAX + 1); 3326 3327 /* option validation is done later */ 3328 append_options(options, optarg); 3329 break; 3330 3331 case 'O': 3332 flags |= MS_OVERLAY; 3333 break; 3334 case ':': 3335 (void) fprintf(stderr, gettext("missing argument for " 3336 "'%c' option\n"), optopt); 3337 usage(B_FALSE); 3338 break; 3339 case '?': 3340 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3341 optopt); 3342 usage(B_FALSE); 3343 } 3344 } 3345 3346 argc -= optind; 3347 argv += optind; 3348 3349 /* check number of arguments */ 3350 if (do_all) { 3351 zfs_handle_t **dslist = NULL; 3352 size_t i, count = 0; 3353 char *protocol = NULL; 3354 3355 if (op == OP_MOUNT) { 3356 types = ZFS_TYPE_FILESYSTEM; 3357 } else if (argc > 0) { 3358 if (strcmp(argv[0], "nfs") == 0 || 3359 strcmp(argv[0], "smb") == 0) { 3360 types = ZFS_TYPE_FILESYSTEM; 3361 } else if (strcmp(argv[0], "iscsi") == 0) { 3362 types = ZFS_TYPE_VOLUME; 3363 } else { 3364 (void) fprintf(stderr, gettext("share type " 3365 "must be 'nfs', 'smb' or 'iscsi'\n")); 3366 usage(B_FALSE); 3367 } 3368 protocol = argv[0]; 3369 argc--; 3370 argv++; 3371 } else { 3372 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME; 3373 } 3374 3375 if (argc != 0) { 3376 (void) fprintf(stderr, gettext("too many arguments\n")); 3377 usage(B_FALSE); 3378 } 3379 3380 get_all_datasets(types, &dslist, &count, verbose); 3381 3382 if (count == 0) 3383 return (0); 3384 3385 qsort(dslist, count, sizeof (void *), dataset_cmp); 3386 3387 for (i = 0; i < count; i++) { 3388 if (verbose) 3389 report_mount_progress(i, count); 3390 3391 if (share_mount_one(dslist[i], op, flags, protocol, 3392 B_FALSE, options) != 0) 3393 ret = 1; 3394 zfs_close(dslist[i]); 3395 } 3396 3397 free(dslist); 3398 } else if (argc == 0) { 3399 struct mnttab entry; 3400 3401 if ((op == OP_SHARE) || (options != NULL)) { 3402 (void) fprintf(stderr, gettext("missing filesystem " 3403 "argument (specify -a for all)\n")); 3404 usage(B_FALSE); 3405 } 3406 3407 /* 3408 * When mount is given no arguments, go through /etc/mnttab and 3409 * display any active ZFS mounts. We hide any snapshots, since 3410 * they are controlled automatically. 3411 */ 3412 rewind(mnttab_file); 3413 while (getmntent(mnttab_file, &entry) == 0) { 3414 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 || 3415 strchr(entry.mnt_special, '@') != NULL) 3416 continue; 3417 3418 (void) printf("%-30s %s\n", entry.mnt_special, 3419 entry.mnt_mountp); 3420 } 3421 3422 } else { 3423 zfs_handle_t *zhp; 3424 3425 types = ZFS_TYPE_FILESYSTEM; 3426 if (op == OP_SHARE) 3427 types |= ZFS_TYPE_VOLUME; 3428 3429 if (argc > 1) { 3430 (void) fprintf(stderr, 3431 gettext("too many arguments\n")); 3432 usage(B_FALSE); 3433 } 3434 3435 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) { 3436 ret = 1; 3437 } else { 3438 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE, 3439 options); 3440 zfs_close(zhp); 3441 } 3442 } 3443 3444 return (ret); 3445 } 3446 3447 /* 3448 * zfs mount -a [nfs | iscsi] 3449 * zfs mount filesystem 3450 * 3451 * Mount all filesystems, or mount the given filesystem. 3452 */ 3453 static int 3454 zfs_do_mount(int argc, char **argv) 3455 { 3456 return (share_mount(OP_MOUNT, argc, argv)); 3457 } 3458 3459 /* 3460 * zfs share -a [nfs | iscsi | smb] 3461 * zfs share filesystem 3462 * 3463 * Share all filesystems, or share the given filesystem. 3464 */ 3465 static int 3466 zfs_do_share(int argc, char **argv) 3467 { 3468 return (share_mount(OP_SHARE, argc, argv)); 3469 } 3470 3471 typedef struct unshare_unmount_node { 3472 zfs_handle_t *un_zhp; 3473 char *un_mountp; 3474 uu_avl_node_t un_avlnode; 3475 } unshare_unmount_node_t; 3476 3477 /* ARGSUSED */ 3478 static int 3479 unshare_unmount_compare(const void *larg, const void *rarg, void *unused) 3480 { 3481 const unshare_unmount_node_t *l = larg; 3482 const unshare_unmount_node_t *r = rarg; 3483 3484 return (strcmp(l->un_mountp, r->un_mountp)); 3485 } 3486 3487 /* 3488 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an 3489 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem, 3490 * and unmount it appropriately. 3491 */ 3492 static int 3493 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual) 3494 { 3495 zfs_handle_t *zhp; 3496 int ret; 3497 struct stat64 statbuf; 3498 struct extmnttab entry; 3499 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount"; 3500 ino_t path_inode; 3501 3502 /* 3503 * Search for the path in /etc/mnttab. Rather than looking for the 3504 * specific path, which can be fooled by non-standard paths (i.e. ".." 3505 * or "//"), we stat() the path and search for the corresponding 3506 * (major,minor) device pair. 3507 */ 3508 if (stat64(path, &statbuf) != 0) { 3509 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3510 cmdname, path, strerror(errno)); 3511 return (1); 3512 } 3513 path_inode = statbuf.st_ino; 3514 3515 /* 3516 * Search for the given (major,minor) pair in the mount table. 3517 */ 3518 rewind(mnttab_file); 3519 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) { 3520 if (entry.mnt_major == major(statbuf.st_dev) && 3521 entry.mnt_minor == minor(statbuf.st_dev)) 3522 break; 3523 } 3524 if (ret != 0) { 3525 if (op == OP_SHARE) { 3526 (void) fprintf(stderr, gettext("cannot %s '%s': not " 3527 "currently mounted\n"), cmdname, path); 3528 return (1); 3529 } 3530 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"), 3531 path); 3532 if ((ret = umount2(path, flags)) != 0) 3533 (void) fprintf(stderr, gettext("%s: %s\n"), path, 3534 strerror(errno)); 3535 return (ret != 0); 3536 } 3537 3538 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) { 3539 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS " 3540 "filesystem\n"), cmdname, path); 3541 return (1); 3542 } 3543 3544 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3545 ZFS_TYPE_FILESYSTEM)) == NULL) 3546 return (1); 3547 3548 ret = 1; 3549 if (stat64(entry.mnt_mountp, &statbuf) != 0) { 3550 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3551 cmdname, path, strerror(errno)); 3552 goto out; 3553 } else if (statbuf.st_ino != path_inode) { 3554 (void) fprintf(stderr, gettext("cannot " 3555 "%s '%s': not a mountpoint\n"), cmdname, path); 3556 goto out; 3557 } 3558 3559 if (op == OP_SHARE) { 3560 char nfs_mnt_prop[ZFS_MAXPROPLEN]; 3561 char smbshare_prop[ZFS_MAXPROPLEN]; 3562 3563 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop, 3564 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0); 3565 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop, 3566 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0); 3567 3568 if (strcmp(nfs_mnt_prop, "off") == 0 && 3569 strcmp(smbshare_prop, "off") == 0) { 3570 (void) fprintf(stderr, gettext("cannot unshare " 3571 "'%s': legacy share\n"), path); 3572 (void) fprintf(stderr, gettext("use " 3573 "unshare(1M) to unshare this filesystem\n")); 3574 } else if (!zfs_is_shared(zhp)) { 3575 (void) fprintf(stderr, gettext("cannot unshare '%s': " 3576 "not currently shared\n"), path); 3577 } else { 3578 ret = zfs_unshareall_bypath(zhp, path); 3579 } 3580 } else { 3581 char mtpt_prop[ZFS_MAXPROPLEN]; 3582 3583 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop, 3584 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0); 3585 3586 if (is_manual) { 3587 ret = zfs_unmount(zhp, NULL, flags); 3588 } else if (strcmp(mtpt_prop, "legacy") == 0) { 3589 (void) fprintf(stderr, gettext("cannot unmount " 3590 "'%s': legacy mountpoint\n"), 3591 zfs_get_name(zhp)); 3592 (void) fprintf(stderr, gettext("use umount(1M) " 3593 "to unmount this filesystem\n")); 3594 } else { 3595 ret = zfs_unmountall(zhp, flags); 3596 } 3597 } 3598 3599 out: 3600 zfs_close(zhp); 3601 3602 return (ret != 0); 3603 } 3604 3605 /* 3606 * Generic callback for unsharing or unmounting a filesystem. 3607 */ 3608 static int 3609 unshare_unmount(int op, int argc, char **argv) 3610 { 3611 int do_all = 0; 3612 int flags = 0; 3613 int ret = 0; 3614 int types, c; 3615 zfs_handle_t *zhp; 3616 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN]; 3617 char sharesmb[ZFS_MAXPROPLEN]; 3618 3619 /* check options */ 3620 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) { 3621 switch (c) { 3622 case 'a': 3623 do_all = 1; 3624 break; 3625 case 'f': 3626 flags = MS_FORCE; 3627 break; 3628 case '?': 3629 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3630 optopt); 3631 usage(B_FALSE); 3632 } 3633 } 3634 3635 argc -= optind; 3636 argv += optind; 3637 3638 if (do_all) { 3639 /* 3640 * We could make use of zfs_for_each() to walk all datasets in 3641 * the system, but this would be very inefficient, especially 3642 * since we would have to linearly search /etc/mnttab for each 3643 * one. Instead, do one pass through /etc/mnttab looking for 3644 * zfs entries and call zfs_unmount() for each one. 3645 * 3646 * Things get a little tricky if the administrator has created 3647 * mountpoints beneath other ZFS filesystems. In this case, we 3648 * have to unmount the deepest filesystems first. To accomplish 3649 * this, we place all the mountpoints in an AVL tree sorted by 3650 * the special type (dataset name), and walk the result in 3651 * reverse to make sure to get any snapshots first. 3652 */ 3653 struct mnttab entry; 3654 uu_avl_pool_t *pool; 3655 uu_avl_t *tree; 3656 unshare_unmount_node_t *node; 3657 uu_avl_index_t idx; 3658 uu_avl_walk_t *walk; 3659 3660 if (argc != 0) { 3661 (void) fprintf(stderr, gettext("too many arguments\n")); 3662 usage(B_FALSE); 3663 } 3664 3665 if ((pool = uu_avl_pool_create("unmount_pool", 3666 sizeof (unshare_unmount_node_t), 3667 offsetof(unshare_unmount_node_t, un_avlnode), 3668 unshare_unmount_compare, 3669 UU_DEFAULT)) == NULL) { 3670 (void) fprintf(stderr, gettext("internal error: " 3671 "out of memory\n")); 3672 exit(1); 3673 } 3674 3675 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) { 3676 (void) fprintf(stderr, gettext("internal error: " 3677 "out of memory\n")); 3678 exit(1); 3679 } 3680 3681 rewind(mnttab_file); 3682 while (getmntent(mnttab_file, &entry) == 0) { 3683 3684 /* ignore non-ZFS entries */ 3685 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 3686 continue; 3687 3688 /* ignore snapshots */ 3689 if (strchr(entry.mnt_special, '@') != NULL) 3690 continue; 3691 3692 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3693 ZFS_TYPE_FILESYSTEM)) == NULL) { 3694 ret = 1; 3695 continue; 3696 } 3697 3698 switch (op) { 3699 case OP_SHARE: 3700 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3701 nfsiscsi_mnt_prop, 3702 sizeof (nfsiscsi_mnt_prop), 3703 NULL, NULL, 0, B_FALSE) == 0); 3704 if (strcmp(nfsiscsi_mnt_prop, "off") != 0) 3705 break; 3706 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3707 nfsiscsi_mnt_prop, 3708 sizeof (nfsiscsi_mnt_prop), 3709 NULL, NULL, 0, B_FALSE) == 0); 3710 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) 3711 continue; 3712 break; 3713 case OP_MOUNT: 3714 /* Ignore legacy mounts */ 3715 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, 3716 nfsiscsi_mnt_prop, 3717 sizeof (nfsiscsi_mnt_prop), 3718 NULL, NULL, 0, B_FALSE) == 0); 3719 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) 3720 continue; 3721 /* Ignore canmount=noauto mounts */ 3722 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == 3723 ZFS_CANMOUNT_NOAUTO) 3724 continue; 3725 default: 3726 break; 3727 } 3728 3729 node = safe_malloc(sizeof (unshare_unmount_node_t)); 3730 node->un_zhp = zhp; 3731 3732 if ((node->un_mountp = strdup(entry.mnt_mountp)) == 3733 NULL) { 3734 (void) fprintf(stderr, gettext("internal error:" 3735 " out of memory\n")); 3736 exit(1); 3737 } 3738 3739 uu_avl_node_init(node, &node->un_avlnode, pool); 3740 3741 if (uu_avl_find(tree, node, NULL, &idx) == NULL) { 3742 uu_avl_insert(tree, node, idx); 3743 } else { 3744 zfs_close(node->un_zhp); 3745 free(node->un_mountp); 3746 free(node); 3747 } 3748 } 3749 3750 /* 3751 * Walk the AVL tree in reverse, unmounting each filesystem and 3752 * removing it from the AVL tree in the process. 3753 */ 3754 if ((walk = uu_avl_walk_start(tree, 3755 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) { 3756 (void) fprintf(stderr, 3757 gettext("internal error: out of memory")); 3758 exit(1); 3759 } 3760 3761 while ((node = uu_avl_walk_next(walk)) != NULL) { 3762 uu_avl_remove(tree, node); 3763 3764 switch (op) { 3765 case OP_SHARE: 3766 if (zfs_unshareall_bypath(node->un_zhp, 3767 node->un_mountp) != 0) 3768 ret = 1; 3769 break; 3770 3771 case OP_MOUNT: 3772 if (zfs_unmount(node->un_zhp, 3773 node->un_mountp, flags) != 0) 3774 ret = 1; 3775 break; 3776 } 3777 3778 zfs_close(node->un_zhp); 3779 free(node->un_mountp); 3780 free(node); 3781 } 3782 3783 uu_avl_walk_end(walk); 3784 uu_avl_destroy(tree); 3785 uu_avl_pool_destroy(pool); 3786 3787 if (op == OP_SHARE) { 3788 /* 3789 * Finally, unshare any volumes shared via iSCSI. 3790 */ 3791 zfs_handle_t **dslist = NULL; 3792 size_t i, count = 0; 3793 3794 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count, 3795 B_FALSE); 3796 3797 if (count != 0) { 3798 qsort(dslist, count, sizeof (void *), 3799 dataset_cmp); 3800 3801 for (i = 0; i < count; i++) { 3802 if (zfs_unshare_iscsi(dslist[i]) != 0) 3803 ret = 1; 3804 zfs_close(dslist[i]); 3805 } 3806 3807 free(dslist); 3808 } 3809 } 3810 } else { 3811 if (argc != 1) { 3812 if (argc == 0) 3813 (void) fprintf(stderr, 3814 gettext("missing filesystem argument\n")); 3815 else 3816 (void) fprintf(stderr, 3817 gettext("too many arguments\n")); 3818 usage(B_FALSE); 3819 } 3820 3821 /* 3822 * We have an argument, but it may be a full path or a ZFS 3823 * filesystem. Pass full paths off to unmount_path() (shared by 3824 * manual_unmount), otherwise open the filesystem and pass to 3825 * zfs_unmount(). 3826 */ 3827 if (argv[0][0] == '/') 3828 return (unshare_unmount_path(op, argv[0], 3829 flags, B_FALSE)); 3830 3831 types = ZFS_TYPE_FILESYSTEM; 3832 if (op == OP_SHARE) 3833 types |= ZFS_TYPE_VOLUME; 3834 3835 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) 3836 return (1); 3837 3838 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 3839 verify(zfs_prop_get(zhp, op == OP_SHARE ? 3840 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, 3841 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL, 3842 NULL, 0, B_FALSE) == 0); 3843 3844 switch (op) { 3845 case OP_SHARE: 3846 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3847 nfsiscsi_mnt_prop, 3848 sizeof (nfsiscsi_mnt_prop), 3849 NULL, NULL, 0, B_FALSE) == 0); 3850 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3851 sharesmb, sizeof (sharesmb), NULL, NULL, 3852 0, B_FALSE) == 0); 3853 3854 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 && 3855 strcmp(sharesmb, "off") == 0) { 3856 (void) fprintf(stderr, gettext("cannot " 3857 "unshare '%s': legacy share\n"), 3858 zfs_get_name(zhp)); 3859 (void) fprintf(stderr, gettext("use " 3860 "unshare(1M) to unshare this " 3861 "filesystem\n")); 3862 ret = 1; 3863 } else if (!zfs_is_shared(zhp)) { 3864 (void) fprintf(stderr, gettext("cannot " 3865 "unshare '%s': not currently " 3866 "shared\n"), zfs_get_name(zhp)); 3867 ret = 1; 3868 } else if (zfs_unshareall(zhp) != 0) { 3869 ret = 1; 3870 } 3871 break; 3872 3873 case OP_MOUNT: 3874 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) { 3875 (void) fprintf(stderr, gettext("cannot " 3876 "unmount '%s': legacy " 3877 "mountpoint\n"), zfs_get_name(zhp)); 3878 (void) fprintf(stderr, gettext("use " 3879 "umount(1M) to unmount this " 3880 "filesystem\n")); 3881 ret = 1; 3882 } else if (!zfs_is_mounted(zhp, NULL)) { 3883 (void) fprintf(stderr, gettext("cannot " 3884 "unmount '%s': not currently " 3885 "mounted\n"), 3886 zfs_get_name(zhp)); 3887 ret = 1; 3888 } else if (zfs_unmountall(zhp, flags) != 0) { 3889 ret = 1; 3890 } 3891 break; 3892 } 3893 } else { 3894 assert(op == OP_SHARE); 3895 3896 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, 3897 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), 3898 NULL, NULL, 0, B_FALSE) == 0); 3899 3900 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) { 3901 (void) fprintf(stderr, gettext("cannot unshare " 3902 "'%s': 'shareiscsi' property not set\n"), 3903 zfs_get_name(zhp)); 3904 (void) fprintf(stderr, gettext("set " 3905 "'shareiscsi' property or use " 3906 "iscsitadm(1M) to share this volume\n")); 3907 ret = 1; 3908 } else if (!zfs_is_shared_iscsi(zhp)) { 3909 (void) fprintf(stderr, gettext("cannot " 3910 "unshare '%s': not currently shared\n"), 3911 zfs_get_name(zhp)); 3912 ret = 1; 3913 } else if (zfs_unshare_iscsi(zhp) != 0) { 3914 ret = 1; 3915 } 3916 } 3917 3918 zfs_close(zhp); 3919 } 3920 3921 return (ret); 3922 } 3923 3924 /* 3925 * zfs unmount -a 3926 * zfs unmount filesystem 3927 * 3928 * Unmount all filesystems, or a specific ZFS filesystem. 3929 */ 3930 static int 3931 zfs_do_unmount(int argc, char **argv) 3932 { 3933 return (unshare_unmount(OP_MOUNT, argc, argv)); 3934 } 3935 3936 /* 3937 * zfs unshare -a 3938 * zfs unshare filesystem 3939 * 3940 * Unshare all filesystems, or a specific ZFS filesystem. 3941 */ 3942 static int 3943 zfs_do_unshare(int argc, char **argv) 3944 { 3945 return (unshare_unmount(OP_SHARE, argc, argv)); 3946 } 3947 3948 /* 3949 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is 3950 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'. 3951 */ 3952 static int 3953 manual_mount(int argc, char **argv) 3954 { 3955 zfs_handle_t *zhp; 3956 char mountpoint[ZFS_MAXPROPLEN]; 3957 char mntopts[MNT_LINE_MAX] = { '\0' }; 3958 int ret; 3959 int c; 3960 int flags = 0; 3961 char *dataset, *path; 3962 3963 /* check options */ 3964 while ((c = getopt(argc, argv, ":mo:O")) != -1) { 3965 switch (c) { 3966 case 'o': 3967 (void) strlcpy(mntopts, optarg, sizeof (mntopts)); 3968 break; 3969 case 'O': 3970 flags |= MS_OVERLAY; 3971 break; 3972 case 'm': 3973 flags |= MS_NOMNTTAB; 3974 break; 3975 case ':': 3976 (void) fprintf(stderr, gettext("missing argument for " 3977 "'%c' option\n"), optopt); 3978 usage(B_FALSE); 3979 break; 3980 case '?': 3981 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3982 optopt); 3983 (void) fprintf(stderr, gettext("usage: mount [-o opts] " 3984 "<path>\n")); 3985 return (2); 3986 } 3987 } 3988 3989 argc -= optind; 3990 argv += optind; 3991 3992 /* check that we only have two arguments */ 3993 if (argc != 2) { 3994 if (argc == 0) 3995 (void) fprintf(stderr, gettext("missing dataset " 3996 "argument\n")); 3997 else if (argc == 1) 3998 (void) fprintf(stderr, 3999 gettext("missing mountpoint argument\n")); 4000 else 4001 (void) fprintf(stderr, gettext("too many arguments\n")); 4002 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n"); 4003 return (2); 4004 } 4005 4006 dataset = argv[0]; 4007 path = argv[1]; 4008 4009 /* try to open the dataset */ 4010 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL) 4011 return (1); 4012 4013 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 4014 sizeof (mountpoint), NULL, NULL, 0, B_FALSE); 4015 4016 /* check for legacy mountpoint and complain appropriately */ 4017 ret = 0; 4018 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) { 4019 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS, 4020 NULL, 0, mntopts, sizeof (mntopts)) != 0) { 4021 (void) fprintf(stderr, gettext("mount failed: %s\n"), 4022 strerror(errno)); 4023 ret = 1; 4024 } 4025 } else { 4026 (void) fprintf(stderr, gettext("filesystem '%s' cannot be " 4027 "mounted using 'mount -F zfs'\n"), dataset); 4028 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' " 4029 "instead.\n"), path); 4030 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' " 4031 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n")); 4032 (void) fprintf(stderr, gettext("See zfs(1M) for more " 4033 "information.\n")); 4034 ret = 1; 4035 } 4036 4037 return (ret); 4038 } 4039 4040 /* 4041 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow 4042 * unmounts of non-legacy filesystems, as this is the dominant administrative 4043 * interface. 4044 */ 4045 static int 4046 manual_unmount(int argc, char **argv) 4047 { 4048 int flags = 0; 4049 int c; 4050 4051 /* check options */ 4052 while ((c = getopt(argc, argv, "f")) != -1) { 4053 switch (c) { 4054 case 'f': 4055 flags = MS_FORCE; 4056 break; 4057 case '?': 4058 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 4059 optopt); 4060 (void) fprintf(stderr, gettext("usage: unmount [-f] " 4061 "<path>\n")); 4062 return (2); 4063 } 4064 } 4065 4066 argc -= optind; 4067 argv += optind; 4068 4069 /* check arguments */ 4070 if (argc != 1) { 4071 if (argc == 0) 4072 (void) fprintf(stderr, gettext("missing path " 4073 "argument\n")); 4074 else 4075 (void) fprintf(stderr, gettext("too many arguments\n")); 4076 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n")); 4077 return (2); 4078 } 4079 4080 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE)); 4081 } 4082 4083 static int 4084 volcheck(zpool_handle_t *zhp, void *data) 4085 { 4086 boolean_t isinit = *((boolean_t *)data); 4087 4088 if (isinit) 4089 return (zpool_create_zvol_links(zhp)); 4090 else 4091 return (zpool_remove_zvol_links(zhp)); 4092 } 4093 4094 /* 4095 * Iterate over all pools in the system and either create or destroy /dev/zvol 4096 * links, depending on the value of 'isinit'. 4097 */ 4098 static int 4099 do_volcheck(boolean_t isinit) 4100 { 4101 return (zpool_iter(g_zfs, volcheck, &isinit) ? 1 : 0); 4102 } 4103 4104 static int 4105 find_command_idx(char *command, int *idx) 4106 { 4107 int i; 4108 4109 for (i = 0; i < NCOMMAND; i++) { 4110 if (command_table[i].name == NULL) 4111 continue; 4112 4113 if (strcmp(command, command_table[i].name) == 0) { 4114 *idx = i; 4115 return (0); 4116 } 4117 } 4118 return (1); 4119 } 4120 4121 int 4122 main(int argc, char **argv) 4123 { 4124 int ret; 4125 int i; 4126 char *progname; 4127 char *cmdname; 4128 4129 (void) setlocale(LC_ALL, ""); 4130 (void) textdomain(TEXT_DOMAIN); 4131 4132 opterr = 0; 4133 4134 if ((g_zfs = libzfs_init()) == NULL) { 4135 (void) fprintf(stderr, gettext("internal error: failed to " 4136 "initialize ZFS library\n")); 4137 return (1); 4138 } 4139 4140 zpool_set_history_str("zfs", argc, argv, history_str); 4141 verify(zpool_stage_history(g_zfs, history_str) == 0); 4142 4143 libzfs_print_on_error(g_zfs, B_TRUE); 4144 4145 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) { 4146 (void) fprintf(stderr, gettext("internal error: unable to " 4147 "open %s\n"), MNTTAB); 4148 return (1); 4149 } 4150 4151 /* 4152 * This command also doubles as the /etc/fs mount and unmount program. 4153 * Determine if we should take this behavior based on argv[0]. 4154 */ 4155 progname = basename(argv[0]); 4156 if (strcmp(progname, "mount") == 0) { 4157 ret = manual_mount(argc, argv); 4158 } else if (strcmp(progname, "umount") == 0) { 4159 ret = manual_unmount(argc, argv); 4160 } else { 4161 /* 4162 * Make sure the user has specified some command. 4163 */ 4164 if (argc < 2) { 4165 (void) fprintf(stderr, gettext("missing command\n")); 4166 usage(B_FALSE); 4167 } 4168 4169 cmdname = argv[1]; 4170 4171 /* 4172 * The 'umount' command is an alias for 'unmount' 4173 */ 4174 if (strcmp(cmdname, "umount") == 0) 4175 cmdname = "unmount"; 4176 4177 /* 4178 * The 'recv' command is an alias for 'receive' 4179 */ 4180 if (strcmp(cmdname, "recv") == 0) 4181 cmdname = "receive"; 4182 4183 /* 4184 * Special case '-?' 4185 */ 4186 if (strcmp(cmdname, "-?") == 0) 4187 usage(B_TRUE); 4188 4189 /* 4190 * 'volinit' and 'volfini' do not appear in the usage message, 4191 * so we have to special case them here. 4192 */ 4193 if (strcmp(cmdname, "volinit") == 0) 4194 return (do_volcheck(B_TRUE)); 4195 else if (strcmp(cmdname, "volfini") == 0) 4196 return (do_volcheck(B_FALSE)); 4197 4198 /* 4199 * Run the appropriate command. 4200 */ 4201 if (find_command_idx(cmdname, &i) == 0) { 4202 current_command = &command_table[i]; 4203 ret = command_table[i].func(argc - 1, argv + 1); 4204 } else if (strchr(cmdname, '=') != NULL) { 4205 verify(find_command_idx("set", &i) == 0); 4206 current_command = &command_table[i]; 4207 ret = command_table[i].func(argc, argv); 4208 } else { 4209 (void) fprintf(stderr, gettext("unrecognized " 4210 "command '%s'\n"), cmdname); 4211 usage(B_FALSE); 4212 } 4213 } 4214 4215 (void) fclose(mnttab_file); 4216 4217 libzfs_fini(g_zfs); 4218 4219 /* 4220 * The 'ZFS_ABORT' environment variable causes us to dump core on exit 4221 * for the purposes of running ::findleaks. 4222 */ 4223 if (getenv("ZFS_ABORT") != NULL) { 4224 (void) printf("dumping core by request\n"); 4225 abort(); 4226 } 4227 4228 return (ret); 4229 } 4230