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 2009 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 (void) fprintf(fp, 374 gettext("\nFor the property list, run: %s\n"), 375 "zfs set|get"); 376 (void) fprintf(fp, 377 gettext("\nFor the delegated permission list, run: %s\n"), 378 "zfs allow|unallow"); 379 } 380 381 /* 382 * See comments at end of main(). 383 */ 384 if (getenv("ZFS_ABORT") != NULL) { 385 (void) printf("dumping core by request\n"); 386 abort(); 387 } 388 389 exit(requested ? 0 : 2); 390 } 391 392 static int 393 parseprop(nvlist_t *props) 394 { 395 char *propname = optarg; 396 char *propval, *strval; 397 398 if ((propval = strchr(propname, '=')) == NULL) { 399 (void) fprintf(stderr, gettext("missing " 400 "'=' for -o option\n")); 401 return (-1); 402 } 403 *propval = '\0'; 404 propval++; 405 if (nvlist_lookup_string(props, propname, &strval) == 0) { 406 (void) fprintf(stderr, gettext("property '%s' " 407 "specified multiple times\n"), propname); 408 return (-1); 409 } 410 if (nvlist_add_string(props, propname, propval) != 0) { 411 (void) fprintf(stderr, gettext("internal " 412 "error: out of memory\n")); 413 return (-1); 414 } 415 return (0); 416 } 417 418 /* 419 * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol> 420 * 421 * Given an existing dataset, create a writable copy whose initial contents 422 * are the same as the source. The newly created dataset maintains a 423 * dependency on the original; the original cannot be destroyed so long as 424 * the clone exists. 425 * 426 * The '-p' flag creates all the non-existing ancestors of the target first. 427 */ 428 static int 429 zfs_do_clone(int argc, char **argv) 430 { 431 zfs_handle_t *zhp = NULL; 432 boolean_t parents = B_FALSE; 433 nvlist_t *props; 434 int ret; 435 int c; 436 437 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 438 (void) fprintf(stderr, gettext("internal error: " 439 "out of memory\n")); 440 return (1); 441 } 442 443 /* check options */ 444 while ((c = getopt(argc, argv, "o:p")) != -1) { 445 switch (c) { 446 case 'o': 447 if (parseprop(props)) 448 return (1); 449 break; 450 case 'p': 451 parents = B_TRUE; 452 break; 453 case '?': 454 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 455 optopt); 456 goto usage; 457 } 458 } 459 460 argc -= optind; 461 argv += optind; 462 463 /* check number of arguments */ 464 if (argc < 1) { 465 (void) fprintf(stderr, gettext("missing source dataset " 466 "argument\n")); 467 goto usage; 468 } 469 if (argc < 2) { 470 (void) fprintf(stderr, gettext("missing target dataset " 471 "argument\n")); 472 goto usage; 473 } 474 if (argc > 2) { 475 (void) fprintf(stderr, gettext("too many arguments\n")); 476 goto usage; 477 } 478 479 /* open the source dataset */ 480 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 481 return (1); 482 483 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM | 484 ZFS_TYPE_VOLUME)) { 485 /* 486 * Now create the ancestors of the target dataset. If the 487 * target already exists and '-p' option was used we should not 488 * complain. 489 */ 490 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | 491 ZFS_TYPE_VOLUME)) 492 return (0); 493 if (zfs_create_ancestors(g_zfs, argv[1]) != 0) 494 return (1); 495 } 496 497 /* pass to libzfs */ 498 ret = zfs_clone(zhp, argv[1], props); 499 500 /* create the mountpoint if necessary */ 501 if (ret == 0) { 502 zfs_handle_t *clone; 503 504 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET); 505 if (clone != NULL) { 506 if ((ret = zfs_mount(clone, NULL, 0)) == 0) 507 ret = zfs_share(clone); 508 zfs_close(clone); 509 } 510 } 511 512 zfs_close(zhp); 513 nvlist_free(props); 514 515 return (!!ret); 516 517 usage: 518 if (zhp) 519 zfs_close(zhp); 520 nvlist_free(props); 521 usage(B_FALSE); 522 return (-1); 523 } 524 525 /* 526 * zfs create [-p] [-o prop=value] ... fs 527 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size 528 * 529 * Create a new dataset. This command can be used to create filesystems 530 * and volumes. Snapshot creation is handled by 'zfs snapshot'. 531 * For volumes, the user must specify a size to be used. 532 * 533 * The '-s' flag applies only to volumes, and indicates that we should not try 534 * to set the reservation for this volume. By default we set a reservation 535 * equal to the size for any volume. For pools with SPA_VERSION >= 536 * SPA_VERSION_REFRESERVATION, we set a refreservation instead. 537 * 538 * The '-p' flag creates all the non-existing ancestors of the target first. 539 */ 540 static int 541 zfs_do_create(int argc, char **argv) 542 { 543 zfs_type_t type = ZFS_TYPE_FILESYSTEM; 544 zfs_handle_t *zhp = NULL; 545 uint64_t volsize; 546 int c; 547 boolean_t noreserve = B_FALSE; 548 boolean_t bflag = B_FALSE; 549 boolean_t parents = B_FALSE; 550 int ret = 1; 551 nvlist_t *props; 552 uint64_t intval; 553 int canmount; 554 555 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 556 (void) fprintf(stderr, gettext("internal error: " 557 "out of memory\n")); 558 return (1); 559 } 560 561 /* check options */ 562 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) { 563 switch (c) { 564 case 'V': 565 type = ZFS_TYPE_VOLUME; 566 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 567 (void) fprintf(stderr, gettext("bad volume " 568 "size '%s': %s\n"), optarg, 569 libzfs_error_description(g_zfs)); 570 goto error; 571 } 572 573 if (nvlist_add_uint64(props, 574 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 575 intval) != 0) { 576 (void) fprintf(stderr, gettext("internal " 577 "error: out of memory\n")); 578 goto error; 579 } 580 volsize = intval; 581 break; 582 case 'p': 583 parents = B_TRUE; 584 break; 585 case 'b': 586 bflag = B_TRUE; 587 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 588 (void) fprintf(stderr, gettext("bad volume " 589 "block size '%s': %s\n"), optarg, 590 libzfs_error_description(g_zfs)); 591 goto error; 592 } 593 594 if (nvlist_add_uint64(props, 595 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 596 intval) != 0) { 597 (void) fprintf(stderr, gettext("internal " 598 "error: out of memory\n")); 599 goto error; 600 } 601 break; 602 case 'o': 603 if (parseprop(props)) 604 goto error; 605 break; 606 case 's': 607 noreserve = B_TRUE; 608 break; 609 case ':': 610 (void) fprintf(stderr, gettext("missing size " 611 "argument\n")); 612 goto badusage; 613 break; 614 case '?': 615 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 616 optopt); 617 goto badusage; 618 } 619 } 620 621 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) { 622 (void) fprintf(stderr, gettext("'-s' and '-b' can only be " 623 "used when creating a volume\n")); 624 goto badusage; 625 } 626 627 argc -= optind; 628 argv += optind; 629 630 /* check number of arguments */ 631 if (argc == 0) { 632 (void) fprintf(stderr, gettext("missing %s argument\n"), 633 zfs_type_to_name(type)); 634 goto badusage; 635 } 636 if (argc > 1) { 637 (void) fprintf(stderr, gettext("too many arguments\n")); 638 goto badusage; 639 } 640 641 if (type == ZFS_TYPE_VOLUME && !noreserve) { 642 zpool_handle_t *zpool_handle; 643 uint64_t spa_version; 644 char *p; 645 zfs_prop_t resv_prop; 646 char *strval; 647 648 if (p = strchr(argv[0], '/')) 649 *p = '\0'; 650 zpool_handle = zpool_open(g_zfs, argv[0]); 651 if (p != NULL) 652 *p = '/'; 653 if (zpool_handle == NULL) 654 goto error; 655 spa_version = zpool_get_prop_int(zpool_handle, 656 ZPOOL_PROP_VERSION, NULL); 657 zpool_close(zpool_handle); 658 if (spa_version >= SPA_VERSION_REFRESERVATION) 659 resv_prop = ZFS_PROP_REFRESERVATION; 660 else 661 resv_prop = ZFS_PROP_RESERVATION; 662 663 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop), 664 &strval) != 0) { 665 if (nvlist_add_uint64(props, 666 zfs_prop_to_name(resv_prop), volsize) != 0) { 667 (void) fprintf(stderr, gettext("internal " 668 "error: out of memory\n")); 669 nvlist_free(props); 670 return (1); 671 } 672 } 673 } 674 675 if (parents && zfs_name_valid(argv[0], type)) { 676 /* 677 * Now create the ancestors of target dataset. If the target 678 * already exists and '-p' option was used we should not 679 * complain. 680 */ 681 if (zfs_dataset_exists(g_zfs, argv[0], type)) { 682 ret = 0; 683 goto error; 684 } 685 if (zfs_create_ancestors(g_zfs, argv[0]) != 0) 686 goto error; 687 } 688 689 /* pass to libzfs */ 690 if (zfs_create(g_zfs, argv[0], type, props) != 0) 691 goto error; 692 693 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 694 goto error; 695 /* 696 * if the user doesn't want the dataset automatically mounted, 697 * then skip the mount/share step 698 */ 699 700 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 701 702 /* 703 * Mount and/or share the new filesystem as appropriate. We provide a 704 * verbose error message to let the user know that their filesystem was 705 * in fact created, even if we failed to mount or share it. 706 */ 707 ret = 0; 708 if (canmount == ZFS_CANMOUNT_ON) { 709 if (zfs_mount(zhp, NULL, 0) != 0) { 710 (void) fprintf(stderr, gettext("filesystem " 711 "successfully created, but not mounted\n")); 712 ret = 1; 713 } else if (zfs_share(zhp) != 0) { 714 (void) fprintf(stderr, gettext("filesystem " 715 "successfully created, but not shared\n")); 716 ret = 1; 717 } 718 } 719 720 error: 721 if (zhp) 722 zfs_close(zhp); 723 nvlist_free(props); 724 return (ret); 725 badusage: 726 nvlist_free(props); 727 usage(B_FALSE); 728 return (2); 729 } 730 731 /* 732 * zfs destroy [-rf] <fs, snap, vol> 733 * 734 * -r Recursively destroy all children 735 * -R Recursively destroy all dependents, including clones 736 * -f Force unmounting of any dependents 737 * 738 * Destroys the given dataset. By default, it will unmount any filesystems, 739 * and refuse to destroy a dataset that has any dependents. A dependent can 740 * either be a child, or a clone of a child. 741 */ 742 typedef struct destroy_cbdata { 743 boolean_t cb_first; 744 int cb_force; 745 int cb_recurse; 746 int cb_error; 747 int cb_needforce; 748 int cb_doclones; 749 boolean_t cb_closezhp; 750 zfs_handle_t *cb_target; 751 char *cb_snapname; 752 } destroy_cbdata_t; 753 754 /* 755 * Check for any dependents based on the '-r' or '-R' flags. 756 */ 757 static int 758 destroy_check_dependent(zfs_handle_t *zhp, void *data) 759 { 760 destroy_cbdata_t *cbp = data; 761 const char *tname = zfs_get_name(cbp->cb_target); 762 const char *name = zfs_get_name(zhp); 763 764 if (strncmp(tname, name, strlen(tname)) == 0 && 765 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) { 766 /* 767 * This is a direct descendant, not a clone somewhere else in 768 * the hierarchy. 769 */ 770 if (cbp->cb_recurse) 771 goto out; 772 773 if (cbp->cb_first) { 774 (void) fprintf(stderr, gettext("cannot destroy '%s': " 775 "%s has children\n"), 776 zfs_get_name(cbp->cb_target), 777 zfs_type_to_name(zfs_get_type(cbp->cb_target))); 778 (void) fprintf(stderr, gettext("use '-r' to destroy " 779 "the following datasets:\n")); 780 cbp->cb_first = B_FALSE; 781 cbp->cb_error = 1; 782 } 783 784 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 785 } else { 786 /* 787 * This is a clone. We only want to report this if the '-r' 788 * wasn't specified, or the target is a snapshot. 789 */ 790 if (!cbp->cb_recurse && 791 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT) 792 goto out; 793 794 if (cbp->cb_first) { 795 (void) fprintf(stderr, gettext("cannot destroy '%s': " 796 "%s has dependent clones\n"), 797 zfs_get_name(cbp->cb_target), 798 zfs_type_to_name(zfs_get_type(cbp->cb_target))); 799 (void) fprintf(stderr, gettext("use '-R' to destroy " 800 "the following datasets:\n")); 801 cbp->cb_first = B_FALSE; 802 cbp->cb_error = 1; 803 } 804 805 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 806 } 807 808 out: 809 zfs_close(zhp); 810 return (0); 811 } 812 813 static int 814 destroy_callback(zfs_handle_t *zhp, void *data) 815 { 816 destroy_cbdata_t *cbp = data; 817 818 /* 819 * Ignore pools (which we've already flagged as an error before getting 820 * here. 821 */ 822 if (strchr(zfs_get_name(zhp), '/') == NULL && 823 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 824 zfs_close(zhp); 825 return (0); 826 } 827 828 /* 829 * Bail out on the first error. 830 */ 831 if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 || 832 zfs_destroy(zhp) != 0) { 833 zfs_close(zhp); 834 return (-1); 835 } 836 837 zfs_close(zhp); 838 return (0); 839 } 840 841 static int 842 destroy_snap_clones(zfs_handle_t *zhp, void *arg) 843 { 844 destroy_cbdata_t *cbp = arg; 845 char thissnap[MAXPATHLEN]; 846 zfs_handle_t *szhp; 847 boolean_t closezhp = cbp->cb_closezhp; 848 int rv; 849 850 (void) snprintf(thissnap, sizeof (thissnap), 851 "%s@%s", zfs_get_name(zhp), cbp->cb_snapname); 852 853 libzfs_print_on_error(g_zfs, B_FALSE); 854 szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT); 855 libzfs_print_on_error(g_zfs, B_TRUE); 856 if (szhp) { 857 /* 858 * Destroy any clones of this snapshot 859 */ 860 if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback, 861 cbp) != 0) { 862 zfs_close(szhp); 863 if (closezhp) 864 zfs_close(zhp); 865 return (-1); 866 } 867 zfs_close(szhp); 868 } 869 870 cbp->cb_closezhp = B_TRUE; 871 rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg); 872 if (closezhp) 873 zfs_close(zhp); 874 return (rv); 875 } 876 877 static int 878 zfs_do_destroy(int argc, char **argv) 879 { 880 destroy_cbdata_t cb = { 0 }; 881 int c; 882 zfs_handle_t *zhp; 883 char *cp; 884 885 /* check options */ 886 while ((c = getopt(argc, argv, "frR")) != -1) { 887 switch (c) { 888 case 'f': 889 cb.cb_force = 1; 890 break; 891 case 'r': 892 cb.cb_recurse = 1; 893 break; 894 case 'R': 895 cb.cb_recurse = 1; 896 cb.cb_doclones = 1; 897 break; 898 case '?': 899 default: 900 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 901 optopt); 902 usage(B_FALSE); 903 } 904 } 905 906 argc -= optind; 907 argv += optind; 908 909 /* check number of arguments */ 910 if (argc == 0) { 911 (void) fprintf(stderr, gettext("missing path argument\n")); 912 usage(B_FALSE); 913 } 914 if (argc > 1) { 915 (void) fprintf(stderr, gettext("too many arguments\n")); 916 usage(B_FALSE); 917 } 918 919 /* 920 * If we are doing recursive destroy of a snapshot, then the 921 * named snapshot may not exist. Go straight to libzfs. 922 */ 923 if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) { 924 int ret; 925 926 *cp = '\0'; 927 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 928 return (1); 929 *cp = '@'; 930 cp++; 931 932 if (cb.cb_doclones) { 933 cb.cb_snapname = cp; 934 if (destroy_snap_clones(zhp, &cb) != 0) { 935 zfs_close(zhp); 936 return (1); 937 } 938 } 939 940 ret = zfs_destroy_snaps(zhp, cp); 941 zfs_close(zhp); 942 if (ret) { 943 (void) fprintf(stderr, 944 gettext("no snapshots destroyed\n")); 945 } 946 return (ret != 0); 947 } 948 949 950 /* Open the given dataset */ 951 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 952 return (1); 953 954 cb.cb_target = zhp; 955 956 /* 957 * Perform an explicit check for pools before going any further. 958 */ 959 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL && 960 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 961 (void) fprintf(stderr, gettext("cannot destroy '%s': " 962 "operation does not apply to pools\n"), 963 zfs_get_name(zhp)); 964 (void) fprintf(stderr, gettext("use 'zfs destroy -r " 965 "%s' to destroy all datasets in the pool\n"), 966 zfs_get_name(zhp)); 967 (void) fprintf(stderr, gettext("use 'zpool destroy %s' " 968 "to destroy the pool itself\n"), zfs_get_name(zhp)); 969 zfs_close(zhp); 970 return (1); 971 } 972 973 /* 974 * Check for any dependents and/or clones. 975 */ 976 cb.cb_first = B_TRUE; 977 if (!cb.cb_doclones && 978 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent, 979 &cb) != 0) { 980 zfs_close(zhp); 981 return (1); 982 } 983 984 if (cb.cb_error || 985 zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0) { 986 zfs_close(zhp); 987 return (1); 988 } 989 990 /* 991 * Do the real thing. The callback will close the handle regardless of 992 * whether it succeeds or not. 993 */ 994 995 if (destroy_callback(zhp, &cb) != 0) 996 return (1); 997 998 999 return (0); 1000 } 1001 1002 /* 1003 * zfs get [-rHp] [-o field[,field]...] [-s source[,source]...] 1004 * < all | property[,property]... > < fs | snap | vol > ... 1005 * 1006 * -r recurse over any child datasets 1007 * -H scripted mode. Headers are stripped, and fields are separated 1008 * by tabs instead of spaces. 1009 * -o Set of fields to display. One of "name,property,value,source". 1010 * Default is all four. 1011 * -s Set of sources to allow. One of 1012 * "local,default,inherited,temporary,none". Default is all 1013 * five. 1014 * -p Display values in parsable (literal) format. 1015 * 1016 * Prints properties for the given datasets. The user can control which 1017 * columns to display as well as which property types to allow. 1018 */ 1019 1020 /* 1021 * Invoked to display the properties for a single dataset. 1022 */ 1023 static int 1024 get_callback(zfs_handle_t *zhp, void *data) 1025 { 1026 char buf[ZFS_MAXPROPLEN]; 1027 zprop_source_t sourcetype; 1028 char source[ZFS_MAXNAMELEN]; 1029 zprop_get_cbdata_t *cbp = data; 1030 nvlist_t *userprop = zfs_get_user_props(zhp); 1031 zprop_list_t *pl = cbp->cb_proplist; 1032 nvlist_t *propval; 1033 char *strval; 1034 char *sourceval; 1035 1036 for (; pl != NULL; pl = pl->pl_next) { 1037 /* 1038 * Skip the special fake placeholder. This will also skip over 1039 * the name property when 'all' is specified. 1040 */ 1041 if (pl->pl_prop == ZFS_PROP_NAME && 1042 pl == cbp->cb_proplist) 1043 continue; 1044 1045 if (pl->pl_prop != ZPROP_INVAL) { 1046 if (zfs_prop_get(zhp, pl->pl_prop, buf, 1047 sizeof (buf), &sourcetype, source, 1048 sizeof (source), 1049 cbp->cb_literal) != 0) { 1050 if (pl->pl_all) 1051 continue; 1052 if (!zfs_prop_valid_for_type(pl->pl_prop, 1053 ZFS_TYPE_DATASET)) { 1054 (void) fprintf(stderr, 1055 gettext("No such property '%s'\n"), 1056 zfs_prop_to_name(pl->pl_prop)); 1057 continue; 1058 } 1059 sourcetype = ZPROP_SRC_NONE; 1060 (void) strlcpy(buf, "-", sizeof (buf)); 1061 } 1062 1063 zprop_print_one_property(zfs_get_name(zhp), cbp, 1064 zfs_prop_to_name(pl->pl_prop), 1065 buf, sourcetype, source); 1066 } else { 1067 if (nvlist_lookup_nvlist(userprop, 1068 pl->pl_user_prop, &propval) != 0) { 1069 if (pl->pl_all) 1070 continue; 1071 sourcetype = ZPROP_SRC_NONE; 1072 strval = "-"; 1073 } else { 1074 verify(nvlist_lookup_string(propval, 1075 ZPROP_VALUE, &strval) == 0); 1076 verify(nvlist_lookup_string(propval, 1077 ZPROP_SOURCE, &sourceval) == 0); 1078 1079 if (strcmp(sourceval, 1080 zfs_get_name(zhp)) == 0) { 1081 sourcetype = ZPROP_SRC_LOCAL; 1082 } else { 1083 sourcetype = ZPROP_SRC_INHERITED; 1084 (void) strlcpy(source, 1085 sourceval, sizeof (source)); 1086 } 1087 } 1088 1089 zprop_print_one_property(zfs_get_name(zhp), cbp, 1090 pl->pl_user_prop, strval, sourcetype, 1091 source); 1092 } 1093 } 1094 1095 return (0); 1096 } 1097 1098 static int 1099 zfs_do_get(int argc, char **argv) 1100 { 1101 zprop_get_cbdata_t cb = { 0 }; 1102 int i, c, flags = 0; 1103 char *value, *fields; 1104 int ret; 1105 zprop_list_t fake_name = { 0 }; 1106 1107 /* 1108 * Set up default columns and sources. 1109 */ 1110 cb.cb_sources = ZPROP_SRC_ALL; 1111 cb.cb_columns[0] = GET_COL_NAME; 1112 cb.cb_columns[1] = GET_COL_PROPERTY; 1113 cb.cb_columns[2] = GET_COL_VALUE; 1114 cb.cb_columns[3] = GET_COL_SOURCE; 1115 cb.cb_type = ZFS_TYPE_DATASET; 1116 1117 /* check options */ 1118 while ((c = getopt(argc, argv, ":o:s:rHp")) != -1) { 1119 switch (c) { 1120 case 'p': 1121 cb.cb_literal = B_TRUE; 1122 break; 1123 case 'r': 1124 flags |= ZFS_ITER_RECURSE; 1125 break; 1126 case 'H': 1127 cb.cb_scripted = B_TRUE; 1128 break; 1129 case ':': 1130 (void) fprintf(stderr, gettext("missing argument for " 1131 "'%c' option\n"), optopt); 1132 usage(B_FALSE); 1133 break; 1134 case 'o': 1135 /* 1136 * Process the set of columns to display. We zero out 1137 * the structure to give us a blank slate. 1138 */ 1139 bzero(&cb.cb_columns, sizeof (cb.cb_columns)); 1140 i = 0; 1141 while (*optarg != '\0') { 1142 static char *col_subopts[] = 1143 { "name", "property", "value", "source", 1144 NULL }; 1145 1146 if (i == 4) { 1147 (void) fprintf(stderr, gettext("too " 1148 "many fields given to -o " 1149 "option\n")); 1150 usage(B_FALSE); 1151 } 1152 1153 switch (getsubopt(&optarg, col_subopts, 1154 &value)) { 1155 case 0: 1156 cb.cb_columns[i++] = GET_COL_NAME; 1157 break; 1158 case 1: 1159 cb.cb_columns[i++] = GET_COL_PROPERTY; 1160 break; 1161 case 2: 1162 cb.cb_columns[i++] = GET_COL_VALUE; 1163 break; 1164 case 3: 1165 cb.cb_columns[i++] = GET_COL_SOURCE; 1166 break; 1167 default: 1168 (void) fprintf(stderr, 1169 gettext("invalid column name " 1170 "'%s'\n"), value); 1171 usage(B_FALSE); 1172 } 1173 } 1174 break; 1175 1176 case 's': 1177 cb.cb_sources = 0; 1178 while (*optarg != '\0') { 1179 static char *source_subopts[] = { 1180 "local", "default", "inherited", 1181 "temporary", "none", NULL }; 1182 1183 switch (getsubopt(&optarg, source_subopts, 1184 &value)) { 1185 case 0: 1186 cb.cb_sources |= ZPROP_SRC_LOCAL; 1187 break; 1188 case 1: 1189 cb.cb_sources |= ZPROP_SRC_DEFAULT; 1190 break; 1191 case 2: 1192 cb.cb_sources |= ZPROP_SRC_INHERITED; 1193 break; 1194 case 3: 1195 cb.cb_sources |= ZPROP_SRC_TEMPORARY; 1196 break; 1197 case 4: 1198 cb.cb_sources |= ZPROP_SRC_NONE; 1199 break; 1200 default: 1201 (void) fprintf(stderr, 1202 gettext("invalid source " 1203 "'%s'\n"), value); 1204 usage(B_FALSE); 1205 } 1206 } 1207 break; 1208 1209 case '?': 1210 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1211 optopt); 1212 usage(B_FALSE); 1213 } 1214 } 1215 1216 argc -= optind; 1217 argv += optind; 1218 1219 if (argc < 1) { 1220 (void) fprintf(stderr, gettext("missing property " 1221 "argument\n")); 1222 usage(B_FALSE); 1223 } 1224 1225 fields = argv[0]; 1226 1227 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1228 != 0) 1229 usage(B_FALSE); 1230 1231 argc--; 1232 argv++; 1233 1234 /* 1235 * As part of zfs_expand_proplist(), we keep track of the maximum column 1236 * width for each property. For the 'NAME' (and 'SOURCE') columns, we 1237 * need to know the maximum name length. However, the user likely did 1238 * not specify 'name' as one of the properties to fetch, so we need to 1239 * make sure we always include at least this property for 1240 * print_get_headers() to work properly. 1241 */ 1242 if (cb.cb_proplist != NULL) { 1243 fake_name.pl_prop = ZFS_PROP_NAME; 1244 fake_name.pl_width = strlen(gettext("NAME")); 1245 fake_name.pl_next = cb.cb_proplist; 1246 cb.cb_proplist = &fake_name; 1247 } 1248 1249 cb.cb_first = B_TRUE; 1250 1251 /* run for each object */ 1252 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, NULL, 1253 &cb.cb_proplist, get_callback, &cb); 1254 1255 if (cb.cb_proplist == &fake_name) 1256 zprop_free_list(fake_name.pl_next); 1257 else 1258 zprop_free_list(cb.cb_proplist); 1259 1260 return (ret); 1261 } 1262 1263 /* 1264 * inherit [-r] <property> <fs|vol> ... 1265 * 1266 * -r Recurse over all children 1267 * 1268 * For each dataset specified on the command line, inherit the given property 1269 * from its parent. Inheriting a property at the pool level will cause it to 1270 * use the default value. The '-r' flag will recurse over all children, and is 1271 * useful for setting a property on a hierarchy-wide basis, regardless of any 1272 * local modifications for each dataset. 1273 */ 1274 1275 static int 1276 inherit_recurse_cb(zfs_handle_t *zhp, void *data) 1277 { 1278 char *propname = data; 1279 zfs_prop_t prop = zfs_name_to_prop(propname); 1280 1281 /* 1282 * If we're doing it recursively, then ignore properties that 1283 * are not valid for this type of dataset. 1284 */ 1285 if (prop != ZPROP_INVAL && 1286 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp))) 1287 return (0); 1288 1289 return (zfs_prop_inherit(zhp, propname) != 0); 1290 } 1291 1292 static int 1293 inherit_cb(zfs_handle_t *zhp, void *data) 1294 { 1295 char *propname = data; 1296 1297 return (zfs_prop_inherit(zhp, propname) != 0); 1298 } 1299 1300 static int 1301 zfs_do_inherit(int argc, char **argv) 1302 { 1303 int c; 1304 zfs_prop_t prop; 1305 char *propname; 1306 int ret; 1307 int flags = 0; 1308 1309 /* check options */ 1310 while ((c = getopt(argc, argv, "r")) != -1) { 1311 switch (c) { 1312 case 'r': 1313 flags |= ZFS_ITER_RECURSE; 1314 break; 1315 case '?': 1316 default: 1317 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1318 optopt); 1319 usage(B_FALSE); 1320 } 1321 } 1322 1323 argc -= optind; 1324 argv += optind; 1325 1326 /* check number of arguments */ 1327 if (argc < 1) { 1328 (void) fprintf(stderr, gettext("missing property argument\n")); 1329 usage(B_FALSE); 1330 } 1331 if (argc < 2) { 1332 (void) fprintf(stderr, gettext("missing dataset argument\n")); 1333 usage(B_FALSE); 1334 } 1335 1336 propname = argv[0]; 1337 argc--; 1338 argv++; 1339 1340 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) { 1341 if (zfs_prop_readonly(prop)) { 1342 (void) fprintf(stderr, gettext( 1343 "%s property is read-only\n"), 1344 propname); 1345 return (1); 1346 } 1347 if (!zfs_prop_inheritable(prop)) { 1348 (void) fprintf(stderr, gettext("'%s' property cannot " 1349 "be inherited\n"), propname); 1350 if (prop == ZFS_PROP_QUOTA || 1351 prop == ZFS_PROP_RESERVATION || 1352 prop == ZFS_PROP_REFQUOTA || 1353 prop == ZFS_PROP_REFRESERVATION) 1354 (void) fprintf(stderr, gettext("use 'zfs set " 1355 "%s=none' to clear\n"), propname); 1356 return (1); 1357 } 1358 } else if (!zfs_prop_user(propname)) { 1359 (void) fprintf(stderr, gettext("invalid property '%s'\n"), 1360 propname); 1361 usage(B_FALSE); 1362 } 1363 1364 if (flags & ZFS_ITER_RECURSE) { 1365 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, 1366 NULL, NULL, inherit_recurse_cb, propname); 1367 } else { 1368 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, 1369 NULL, NULL, inherit_cb, propname); 1370 } 1371 1372 return (ret); 1373 } 1374 1375 typedef struct upgrade_cbdata { 1376 uint64_t cb_numupgraded; 1377 uint64_t cb_numsamegraded; 1378 uint64_t cb_numfailed; 1379 uint64_t cb_version; 1380 boolean_t cb_newer; 1381 boolean_t cb_foundone; 1382 char cb_lastfs[ZFS_MAXNAMELEN]; 1383 } upgrade_cbdata_t; 1384 1385 static int 1386 same_pool(zfs_handle_t *zhp, const char *name) 1387 { 1388 int len1 = strcspn(name, "/@"); 1389 const char *zhname = zfs_get_name(zhp); 1390 int len2 = strcspn(zhname, "/@"); 1391 1392 if (len1 != len2) 1393 return (B_FALSE); 1394 return (strncmp(name, zhname, len1) == 0); 1395 } 1396 1397 static int 1398 upgrade_list_callback(zfs_handle_t *zhp, void *data) 1399 { 1400 upgrade_cbdata_t *cb = data; 1401 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1402 1403 /* list if it's old/new */ 1404 if ((!cb->cb_newer && version < ZPL_VERSION) || 1405 (cb->cb_newer && version > ZPL_VERSION)) { 1406 char *str; 1407 if (cb->cb_newer) { 1408 str = gettext("The following filesystems are " 1409 "formatted using a newer software version and\n" 1410 "cannot be accessed on the current system.\n\n"); 1411 } else { 1412 str = gettext("The following filesystems are " 1413 "out of date, and can be upgraded. After being\n" 1414 "upgraded, these filesystems (and any 'zfs send' " 1415 "streams generated from\n" 1416 "subsequent snapshots) will no longer be " 1417 "accessible by older software versions.\n\n"); 1418 } 1419 1420 if (!cb->cb_foundone) { 1421 (void) puts(str); 1422 (void) printf(gettext("VER FILESYSTEM\n")); 1423 (void) printf(gettext("--- ------------\n")); 1424 cb->cb_foundone = B_TRUE; 1425 } 1426 1427 (void) printf("%2u %s\n", version, zfs_get_name(zhp)); 1428 } 1429 1430 return (0); 1431 } 1432 1433 static int 1434 upgrade_set_callback(zfs_handle_t *zhp, void *data) 1435 { 1436 upgrade_cbdata_t *cb = data; 1437 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1438 1439 if (cb->cb_version >= ZPL_VERSION_FUID) { 1440 int spa_version; 1441 1442 if (zfs_spa_version(zhp, &spa_version) < 0) 1443 return (-1); 1444 1445 if (spa_version < SPA_VERSION_FUID) { 1446 /* can't upgrade */ 1447 (void) printf(gettext("%s: can not be upgraded; " 1448 "the pool version needs to first be upgraded\nto " 1449 "version %d\n\n"), 1450 zfs_get_name(zhp), SPA_VERSION_FUID); 1451 cb->cb_numfailed++; 1452 return (0); 1453 } 1454 } 1455 1456 /* upgrade */ 1457 if (version < cb->cb_version) { 1458 char verstr[16]; 1459 (void) snprintf(verstr, sizeof (verstr), 1460 "%llu", cb->cb_version); 1461 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) { 1462 /* 1463 * If they did "zfs upgrade -a", then we could 1464 * be doing ioctls to different pools. We need 1465 * to log this history once to each pool. 1466 */ 1467 verify(zpool_stage_history(g_zfs, history_str) == 0); 1468 } 1469 if (zfs_prop_set(zhp, "version", verstr) == 0) 1470 cb->cb_numupgraded++; 1471 else 1472 cb->cb_numfailed++; 1473 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp)); 1474 } else if (version > cb->cb_version) { 1475 /* can't downgrade */ 1476 (void) printf(gettext("%s: can not be downgraded; " 1477 "it is already at version %u\n"), 1478 zfs_get_name(zhp), version); 1479 cb->cb_numfailed++; 1480 } else { 1481 cb->cb_numsamegraded++; 1482 } 1483 return (0); 1484 } 1485 1486 /* 1487 * zfs upgrade 1488 * zfs upgrade -v 1489 * zfs upgrade [-r] [-V <version>] <-a | filesystem> 1490 */ 1491 static int 1492 zfs_do_upgrade(int argc, char **argv) 1493 { 1494 boolean_t all = B_FALSE; 1495 boolean_t showversions = B_FALSE; 1496 int ret; 1497 upgrade_cbdata_t cb = { 0 }; 1498 char c; 1499 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS; 1500 1501 /* check options */ 1502 while ((c = getopt(argc, argv, "rvV:a")) != -1) { 1503 switch (c) { 1504 case 'r': 1505 flags |= ZFS_ITER_RECURSE; 1506 break; 1507 case 'v': 1508 showversions = B_TRUE; 1509 break; 1510 case 'V': 1511 if (zfs_prop_string_to_index(ZFS_PROP_VERSION, 1512 optarg, &cb.cb_version) != 0) { 1513 (void) fprintf(stderr, 1514 gettext("invalid version %s\n"), optarg); 1515 usage(B_FALSE); 1516 } 1517 break; 1518 case 'a': 1519 all = B_TRUE; 1520 break; 1521 case '?': 1522 default: 1523 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1524 optopt); 1525 usage(B_FALSE); 1526 } 1527 } 1528 1529 argc -= optind; 1530 argv += optind; 1531 1532 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version)) 1533 usage(B_FALSE); 1534 if (showversions && (flags & ZFS_ITER_RECURSE || all || 1535 cb.cb_version || argc)) 1536 usage(B_FALSE); 1537 if ((all || argc) && (showversions)) 1538 usage(B_FALSE); 1539 if (all && argc) 1540 usage(B_FALSE); 1541 1542 if (showversions) { 1543 /* Show info on available versions. */ 1544 (void) printf(gettext("The following filesystem versions are " 1545 "supported:\n\n")); 1546 (void) printf(gettext("VER DESCRIPTION\n")); 1547 (void) printf("--- -----------------------------------------" 1548 "---------------\n"); 1549 (void) printf(gettext(" 1 Initial ZFS filesystem version\n")); 1550 (void) printf(gettext(" 2 Enhanced directory entries\n")); 1551 (void) printf(gettext(" 3 Case insensitive and File system " 1552 "unique identifer (FUID)\n")); 1553 (void) printf(gettext("\nFor more information on a particular " 1554 "version, including supported releases, see:\n\n")); 1555 (void) printf("http://www.opensolaris.org/os/community/zfs/" 1556 "version/zpl/N\n\n"); 1557 (void) printf(gettext("Where 'N' is the version number.\n")); 1558 ret = 0; 1559 } else if (argc || all) { 1560 /* Upgrade filesystems */ 1561 if (cb.cb_version == 0) 1562 cb.cb_version = ZPL_VERSION; 1563 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM, 1564 NULL, NULL, upgrade_set_callback, &cb); 1565 (void) printf(gettext("%llu filesystems upgraded\n"), 1566 cb.cb_numupgraded); 1567 if (cb.cb_numsamegraded) { 1568 (void) printf(gettext("%llu filesystems already at " 1569 "this version\n"), 1570 cb.cb_numsamegraded); 1571 } 1572 if (cb.cb_numfailed != 0) 1573 ret = 1; 1574 } else { 1575 /* List old-version filesytems */ 1576 boolean_t found; 1577 (void) printf(gettext("This system is currently running " 1578 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION); 1579 1580 flags |= ZFS_ITER_RECURSE; 1581 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM, 1582 NULL, NULL, upgrade_list_callback, &cb); 1583 1584 found = cb.cb_foundone; 1585 cb.cb_foundone = B_FALSE; 1586 cb.cb_newer = B_TRUE; 1587 1588 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM, 1589 NULL, NULL, upgrade_list_callback, &cb); 1590 1591 if (!cb.cb_foundone && !found) { 1592 (void) printf(gettext("All filesystems are " 1593 "formatted with the current version.\n")); 1594 } 1595 } 1596 1597 return (ret); 1598 } 1599 1600 /* 1601 * list [-rH] [-o property[,property]...] [-t type[,type]...] 1602 * [-s property [-s property]...] [-S property [-S property]...] 1603 * <dataset> ... 1604 * 1605 * -r Recurse over all children 1606 * -H Scripted mode; elide headers and separate columns by tabs 1607 * -o Control which fields to display. 1608 * -t Control which object types to display. 1609 * -s Specify sort columns, descending order. 1610 * -S Specify sort columns, ascending order. 1611 * 1612 * When given no arguments, lists all filesystems in the system. 1613 * Otherwise, list the specified datasets, optionally recursing down them if 1614 * '-r' is specified. 1615 */ 1616 typedef struct list_cbdata { 1617 boolean_t cb_first; 1618 boolean_t cb_scripted; 1619 zprop_list_t *cb_proplist; 1620 } list_cbdata_t; 1621 1622 /* 1623 * Given a list of columns to display, output appropriate headers for each one. 1624 */ 1625 static void 1626 print_header(zprop_list_t *pl) 1627 { 1628 char headerbuf[ZFS_MAXPROPLEN]; 1629 const char *header; 1630 int i; 1631 boolean_t first = B_TRUE; 1632 boolean_t right_justify; 1633 1634 for (; pl != NULL; pl = pl->pl_next) { 1635 if (!first) { 1636 (void) printf(" "); 1637 } else { 1638 first = B_FALSE; 1639 } 1640 1641 right_justify = B_FALSE; 1642 if (pl->pl_prop != ZPROP_INVAL) { 1643 header = zfs_prop_column_name(pl->pl_prop); 1644 right_justify = zfs_prop_align_right(pl->pl_prop); 1645 } else { 1646 for (i = 0; pl->pl_user_prop[i] != '\0'; i++) 1647 headerbuf[i] = toupper(pl->pl_user_prop[i]); 1648 headerbuf[i] = '\0'; 1649 header = headerbuf; 1650 } 1651 1652 if (pl->pl_next == NULL && !right_justify) 1653 (void) printf("%s", header); 1654 else if (right_justify) 1655 (void) printf("%*s", pl->pl_width, header); 1656 else 1657 (void) printf("%-*s", pl->pl_width, header); 1658 } 1659 1660 (void) printf("\n"); 1661 } 1662 1663 /* 1664 * Given a dataset and a list of fields, print out all the properties according 1665 * to the described layout. 1666 */ 1667 static void 1668 print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted) 1669 { 1670 boolean_t first = B_TRUE; 1671 char property[ZFS_MAXPROPLEN]; 1672 nvlist_t *userprops = zfs_get_user_props(zhp); 1673 nvlist_t *propval; 1674 char *propstr; 1675 boolean_t right_justify; 1676 int width; 1677 1678 for (; pl != NULL; pl = pl->pl_next) { 1679 if (!first) { 1680 if (scripted) 1681 (void) printf("\t"); 1682 else 1683 (void) printf(" "); 1684 } else { 1685 first = B_FALSE; 1686 } 1687 1688 right_justify = B_FALSE; 1689 if (pl->pl_prop != ZPROP_INVAL) { 1690 if (zfs_prop_get(zhp, pl->pl_prop, property, 1691 sizeof (property), NULL, NULL, 0, B_FALSE) != 0) 1692 propstr = "-"; 1693 else 1694 propstr = property; 1695 1696 right_justify = zfs_prop_align_right(pl->pl_prop); 1697 } else { 1698 if (nvlist_lookup_nvlist(userprops, 1699 pl->pl_user_prop, &propval) != 0) 1700 propstr = "-"; 1701 else 1702 verify(nvlist_lookup_string(propval, 1703 ZPROP_VALUE, &propstr) == 0); 1704 } 1705 1706 width = pl->pl_width; 1707 1708 /* 1709 * If this is being called in scripted mode, or if this is the 1710 * last column and it is left-justified, don't include a width 1711 * format specifier. 1712 */ 1713 if (scripted || (pl->pl_next == NULL && !right_justify)) 1714 (void) printf("%s", propstr); 1715 else if (right_justify) 1716 (void) printf("%*s", width, propstr); 1717 else 1718 (void) printf("%-*s", width, propstr); 1719 } 1720 1721 (void) printf("\n"); 1722 } 1723 1724 /* 1725 * Generic callback function to list a dataset or snapshot. 1726 */ 1727 static int 1728 list_callback(zfs_handle_t *zhp, void *data) 1729 { 1730 list_cbdata_t *cbp = data; 1731 1732 if (cbp->cb_first) { 1733 if (!cbp->cb_scripted) 1734 print_header(cbp->cb_proplist); 1735 cbp->cb_first = B_FALSE; 1736 } 1737 1738 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted); 1739 1740 return (0); 1741 } 1742 1743 static int 1744 zfs_do_list(int argc, char **argv) 1745 { 1746 int c; 1747 boolean_t scripted = B_FALSE; 1748 static char default_fields[] = 1749 "name,used,available,referenced,mountpoint"; 1750 int types = ZFS_TYPE_DATASET; 1751 boolean_t types_specified = B_FALSE; 1752 char *fields = NULL; 1753 list_cbdata_t cb = { 0 }; 1754 char *value; 1755 int ret; 1756 zfs_sort_column_t *sortcol = NULL; 1757 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS; 1758 1759 /* check options */ 1760 while ((c = getopt(argc, argv, ":o:rt:Hs:S:")) != -1) { 1761 switch (c) { 1762 case 'o': 1763 fields = optarg; 1764 break; 1765 case 'r': 1766 flags |= ZFS_ITER_RECURSE; 1767 break; 1768 case 'H': 1769 scripted = B_TRUE; 1770 break; 1771 case 's': 1772 if (zfs_add_sort_column(&sortcol, optarg, 1773 B_FALSE) != 0) { 1774 (void) fprintf(stderr, 1775 gettext("invalid property '%s'\n"), optarg); 1776 usage(B_FALSE); 1777 } 1778 break; 1779 case 'S': 1780 if (zfs_add_sort_column(&sortcol, optarg, 1781 B_TRUE) != 0) { 1782 (void) fprintf(stderr, 1783 gettext("invalid property '%s'\n"), optarg); 1784 usage(B_FALSE); 1785 } 1786 break; 1787 case 't': 1788 types = 0; 1789 types_specified = B_TRUE; 1790 flags &= ~ZFS_ITER_PROP_LISTSNAPS; 1791 while (*optarg != '\0') { 1792 static char *type_subopts[] = { "filesystem", 1793 "volume", "snapshot", "all", NULL }; 1794 1795 switch (getsubopt(&optarg, type_subopts, 1796 &value)) { 1797 case 0: 1798 types |= ZFS_TYPE_FILESYSTEM; 1799 break; 1800 case 1: 1801 types |= ZFS_TYPE_VOLUME; 1802 break; 1803 case 2: 1804 types |= ZFS_TYPE_SNAPSHOT; 1805 break; 1806 case 3: 1807 types = ZFS_TYPE_DATASET; 1808 break; 1809 1810 default: 1811 (void) fprintf(stderr, 1812 gettext("invalid type '%s'\n"), 1813 value); 1814 usage(B_FALSE); 1815 } 1816 } 1817 break; 1818 case ':': 1819 (void) fprintf(stderr, gettext("missing argument for " 1820 "'%c' option\n"), optopt); 1821 usage(B_FALSE); 1822 break; 1823 case '?': 1824 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1825 optopt); 1826 usage(B_FALSE); 1827 } 1828 } 1829 1830 argc -= optind; 1831 argv += optind; 1832 1833 if (fields == NULL) 1834 fields = default_fields; 1835 1836 /* 1837 * If "-o space" and no types were specified, don't display snapshots. 1838 */ 1839 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE) 1840 types &= ~ZFS_TYPE_SNAPSHOT; 1841 1842 /* 1843 * If the user specifies '-o all', the zprop_get_list() doesn't 1844 * normally include the name of the dataset. For 'zfs list', we always 1845 * want this property to be first. 1846 */ 1847 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1848 != 0) 1849 usage(B_FALSE); 1850 1851 cb.cb_scripted = scripted; 1852 cb.cb_first = B_TRUE; 1853 1854 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist, 1855 list_callback, &cb); 1856 1857 zprop_free_list(cb.cb_proplist); 1858 zfs_free_sort_columns(sortcol); 1859 1860 if (ret == 0 && cb.cb_first && !cb.cb_scripted) 1861 (void) printf(gettext("no datasets available\n")); 1862 1863 return (ret); 1864 } 1865 1866 /* 1867 * zfs rename <fs | snap | vol> <fs | snap | vol> 1868 * zfs rename -p <fs | vol> <fs | vol> 1869 * zfs rename -r <snap> <snap> 1870 * 1871 * Renames the given dataset to another of the same type. 1872 * 1873 * The '-p' flag creates all the non-existing ancestors of the target first. 1874 */ 1875 /* ARGSUSED */ 1876 static int 1877 zfs_do_rename(int argc, char **argv) 1878 { 1879 zfs_handle_t *zhp; 1880 int c; 1881 int ret; 1882 boolean_t recurse = B_FALSE; 1883 boolean_t parents = B_FALSE; 1884 1885 /* check options */ 1886 while ((c = getopt(argc, argv, "pr")) != -1) { 1887 switch (c) { 1888 case 'p': 1889 parents = B_TRUE; 1890 break; 1891 case 'r': 1892 recurse = B_TRUE; 1893 break; 1894 case '?': 1895 default: 1896 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1897 optopt); 1898 usage(B_FALSE); 1899 } 1900 } 1901 1902 argc -= optind; 1903 argv += optind; 1904 1905 /* check number of arguments */ 1906 if (argc < 1) { 1907 (void) fprintf(stderr, gettext("missing source dataset " 1908 "argument\n")); 1909 usage(B_FALSE); 1910 } 1911 if (argc < 2) { 1912 (void) fprintf(stderr, gettext("missing target dataset " 1913 "argument\n")); 1914 usage(B_FALSE); 1915 } 1916 if (argc > 2) { 1917 (void) fprintf(stderr, gettext("too many arguments\n")); 1918 usage(B_FALSE); 1919 } 1920 1921 if (recurse && parents) { 1922 (void) fprintf(stderr, gettext("-p and -r options are mutually " 1923 "exclusive\n")); 1924 usage(B_FALSE); 1925 } 1926 1927 if (recurse && strchr(argv[0], '@') == 0) { 1928 (void) fprintf(stderr, gettext("source dataset for recursive " 1929 "rename must be a snapshot\n")); 1930 usage(B_FALSE); 1931 } 1932 1933 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM | 1934 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL) 1935 return (1); 1936 1937 /* If we were asked and the name looks good, try to create ancestors. */ 1938 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) && 1939 zfs_create_ancestors(g_zfs, argv[1]) != 0) { 1940 zfs_close(zhp); 1941 return (1); 1942 } 1943 1944 ret = (zfs_rename(zhp, argv[1], recurse) != 0); 1945 1946 zfs_close(zhp); 1947 return (ret); 1948 } 1949 1950 /* 1951 * zfs promote <fs> 1952 * 1953 * Promotes the given clone fs to be the parent 1954 */ 1955 /* ARGSUSED */ 1956 static int 1957 zfs_do_promote(int argc, char **argv) 1958 { 1959 zfs_handle_t *zhp; 1960 int ret; 1961 1962 /* check options */ 1963 if (argc > 1 && argv[1][0] == '-') { 1964 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1965 argv[1][1]); 1966 usage(B_FALSE); 1967 } 1968 1969 /* check number of arguments */ 1970 if (argc < 2) { 1971 (void) fprintf(stderr, gettext("missing clone filesystem" 1972 " argument\n")); 1973 usage(B_FALSE); 1974 } 1975 if (argc > 2) { 1976 (void) fprintf(stderr, gettext("too many arguments\n")); 1977 usage(B_FALSE); 1978 } 1979 1980 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 1981 if (zhp == NULL) 1982 return (1); 1983 1984 ret = (zfs_promote(zhp) != 0); 1985 1986 1987 zfs_close(zhp); 1988 return (ret); 1989 } 1990 1991 /* 1992 * zfs rollback [-rRf] <snapshot> 1993 * 1994 * -r Delete any intervening snapshots before doing rollback 1995 * -R Delete any snapshots and their clones 1996 * -f ignored for backwards compatability 1997 * 1998 * Given a filesystem, rollback to a specific snapshot, discarding any changes 1999 * since then and making it the active dataset. If more recent snapshots exist, 2000 * the command will complain unless the '-r' flag is given. 2001 */ 2002 typedef struct rollback_cbdata { 2003 uint64_t cb_create; 2004 boolean_t cb_first; 2005 int cb_doclones; 2006 char *cb_target; 2007 int cb_error; 2008 boolean_t cb_recurse; 2009 boolean_t cb_dependent; 2010 } rollback_cbdata_t; 2011 2012 /* 2013 * Report any snapshots more recent than the one specified. Used when '-r' is 2014 * not specified. We reuse this same callback for the snapshot dependents - if 2015 * 'cb_dependent' is set, then this is a dependent and we should report it 2016 * without checking the transaction group. 2017 */ 2018 static int 2019 rollback_check(zfs_handle_t *zhp, void *data) 2020 { 2021 rollback_cbdata_t *cbp = data; 2022 2023 if (cbp->cb_doclones) { 2024 zfs_close(zhp); 2025 return (0); 2026 } 2027 2028 if (!cbp->cb_dependent) { 2029 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 && 2030 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && 2031 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > 2032 cbp->cb_create) { 2033 2034 if (cbp->cb_first && !cbp->cb_recurse) { 2035 (void) fprintf(stderr, gettext("cannot " 2036 "rollback to '%s': more recent snapshots " 2037 "exist\n"), 2038 cbp->cb_target); 2039 (void) fprintf(stderr, gettext("use '-r' to " 2040 "force deletion of the following " 2041 "snapshots:\n")); 2042 cbp->cb_first = 0; 2043 cbp->cb_error = 1; 2044 } 2045 2046 if (cbp->cb_recurse) { 2047 cbp->cb_dependent = B_TRUE; 2048 if (zfs_iter_dependents(zhp, B_TRUE, 2049 rollback_check, cbp) != 0) { 2050 zfs_close(zhp); 2051 return (-1); 2052 } 2053 cbp->cb_dependent = B_FALSE; 2054 } else { 2055 (void) fprintf(stderr, "%s\n", 2056 zfs_get_name(zhp)); 2057 } 2058 } 2059 } else { 2060 if (cbp->cb_first && cbp->cb_recurse) { 2061 (void) fprintf(stderr, gettext("cannot rollback to " 2062 "'%s': clones of previous snapshots exist\n"), 2063 cbp->cb_target); 2064 (void) fprintf(stderr, gettext("use '-R' to " 2065 "force deletion of the following clones and " 2066 "dependents:\n")); 2067 cbp->cb_first = 0; 2068 cbp->cb_error = 1; 2069 } 2070 2071 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 2072 } 2073 2074 zfs_close(zhp); 2075 return (0); 2076 } 2077 2078 static int 2079 zfs_do_rollback(int argc, char **argv) 2080 { 2081 int ret; 2082 int c; 2083 boolean_t force = B_FALSE; 2084 rollback_cbdata_t cb = { 0 }; 2085 zfs_handle_t *zhp, *snap; 2086 char parentname[ZFS_MAXNAMELEN]; 2087 char *delim; 2088 2089 /* check options */ 2090 while ((c = getopt(argc, argv, "rRf")) != -1) { 2091 switch (c) { 2092 case 'r': 2093 cb.cb_recurse = 1; 2094 break; 2095 case 'R': 2096 cb.cb_recurse = 1; 2097 cb.cb_doclones = 1; 2098 break; 2099 case 'f': 2100 force = B_TRUE; 2101 break; 2102 case '?': 2103 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2104 optopt); 2105 usage(B_FALSE); 2106 } 2107 } 2108 2109 argc -= optind; 2110 argv += optind; 2111 2112 /* check number of arguments */ 2113 if (argc < 1) { 2114 (void) fprintf(stderr, gettext("missing dataset argument\n")); 2115 usage(B_FALSE); 2116 } 2117 if (argc > 1) { 2118 (void) fprintf(stderr, gettext("too many arguments\n")); 2119 usage(B_FALSE); 2120 } 2121 2122 /* open the snapshot */ 2123 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 2124 return (1); 2125 2126 /* open the parent dataset */ 2127 (void) strlcpy(parentname, argv[0], sizeof (parentname)); 2128 verify((delim = strrchr(parentname, '@')) != NULL); 2129 *delim = '\0'; 2130 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) { 2131 zfs_close(snap); 2132 return (1); 2133 } 2134 2135 /* 2136 * Check for more recent snapshots and/or clones based on the presence 2137 * of '-r' and '-R'. 2138 */ 2139 cb.cb_target = argv[0]; 2140 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 2141 cb.cb_first = B_TRUE; 2142 cb.cb_error = 0; 2143 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0) 2144 goto out; 2145 2146 if ((ret = cb.cb_error) != 0) 2147 goto out; 2148 2149 /* 2150 * Rollback parent to the given snapshot. 2151 */ 2152 ret = zfs_rollback(zhp, snap, force); 2153 2154 out: 2155 zfs_close(snap); 2156 zfs_close(zhp); 2157 2158 if (ret == 0) 2159 return (0); 2160 else 2161 return (1); 2162 } 2163 2164 /* 2165 * zfs set property=value { fs | snap | vol } ... 2166 * 2167 * Sets the given property for all datasets specified on the command line. 2168 */ 2169 typedef struct set_cbdata { 2170 char *cb_propname; 2171 char *cb_value; 2172 } set_cbdata_t; 2173 2174 static int 2175 set_callback(zfs_handle_t *zhp, void *data) 2176 { 2177 set_cbdata_t *cbp = data; 2178 2179 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) { 2180 switch (libzfs_errno(g_zfs)) { 2181 case EZFS_MOUNTFAILED: 2182 (void) fprintf(stderr, gettext("property may be set " 2183 "but unable to remount filesystem\n")); 2184 break; 2185 case EZFS_SHARENFSFAILED: 2186 (void) fprintf(stderr, gettext("property may be set " 2187 "but unable to reshare filesystem\n")); 2188 break; 2189 } 2190 return (1); 2191 } 2192 return (0); 2193 } 2194 2195 static int 2196 zfs_do_set(int argc, char **argv) 2197 { 2198 set_cbdata_t cb; 2199 int ret; 2200 2201 /* check for options */ 2202 if (argc > 1 && argv[1][0] == '-') { 2203 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2204 argv[1][1]); 2205 usage(B_FALSE); 2206 } 2207 2208 /* check number of arguments */ 2209 if (argc < 2) { 2210 (void) fprintf(stderr, gettext("missing property=value " 2211 "argument\n")); 2212 usage(B_FALSE); 2213 } 2214 if (argc < 3) { 2215 (void) fprintf(stderr, gettext("missing dataset name\n")); 2216 usage(B_FALSE); 2217 } 2218 2219 /* validate property=value argument */ 2220 cb.cb_propname = argv[1]; 2221 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) || 2222 (cb.cb_value[1] == '\0')) { 2223 (void) fprintf(stderr, gettext("missing value in " 2224 "property=value argument\n")); 2225 usage(B_FALSE); 2226 } 2227 2228 *cb.cb_value = '\0'; 2229 cb.cb_value++; 2230 2231 if (*cb.cb_propname == '\0') { 2232 (void) fprintf(stderr, 2233 gettext("missing property in property=value argument\n")); 2234 usage(B_FALSE); 2235 } 2236 2237 ret = zfs_for_each(argc - 2, argv + 2, NULL, 2238 ZFS_TYPE_DATASET, NULL, NULL, set_callback, &cb); 2239 2240 return (ret); 2241 } 2242 2243 /* 2244 * zfs snapshot [-r] [-o prop=value] ... <fs@snap> 2245 * 2246 * Creates a snapshot with the given name. While functionally equivalent to 2247 * 'zfs create', it is a separate command to differentiate intent. 2248 */ 2249 static int 2250 zfs_do_snapshot(int argc, char **argv) 2251 { 2252 boolean_t recursive = B_FALSE; 2253 int ret; 2254 char c; 2255 nvlist_t *props; 2256 2257 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 2258 (void) fprintf(stderr, gettext("internal error: " 2259 "out of memory\n")); 2260 return (1); 2261 } 2262 2263 /* check options */ 2264 while ((c = getopt(argc, argv, "ro:")) != -1) { 2265 switch (c) { 2266 case 'o': 2267 if (parseprop(props)) 2268 return (1); 2269 break; 2270 case 'r': 2271 recursive = B_TRUE; 2272 break; 2273 case '?': 2274 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2275 optopt); 2276 goto usage; 2277 } 2278 } 2279 2280 argc -= optind; 2281 argv += optind; 2282 2283 /* check number of arguments */ 2284 if (argc < 1) { 2285 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2286 goto usage; 2287 } 2288 if (argc > 1) { 2289 (void) fprintf(stderr, gettext("too many arguments\n")); 2290 goto usage; 2291 } 2292 2293 ret = zfs_snapshot(g_zfs, argv[0], recursive, props); 2294 nvlist_free(props); 2295 if (ret && recursive) 2296 (void) fprintf(stderr, gettext("no snapshots were created\n")); 2297 return (ret != 0); 2298 2299 usage: 2300 nvlist_free(props); 2301 usage(B_FALSE); 2302 return (-1); 2303 } 2304 2305 /* 2306 * zfs send [-v] -R [-i|-I <@snap>] <fs@snap> 2307 * zfs send [-v] [-i|-I <@snap>] <fs@snap> 2308 * 2309 * Send a backup stream to stdout. 2310 */ 2311 static int 2312 zfs_do_send(int argc, char **argv) 2313 { 2314 char *fromname = NULL; 2315 char *toname = NULL; 2316 char *cp; 2317 zfs_handle_t *zhp; 2318 boolean_t doall = B_FALSE; 2319 boolean_t replicate = B_FALSE; 2320 boolean_t fromorigin = B_FALSE; 2321 boolean_t verbose = B_FALSE; 2322 int c, err; 2323 2324 /* check options */ 2325 while ((c = getopt(argc, argv, ":i:I:Rv")) != -1) { 2326 switch (c) { 2327 case 'i': 2328 if (fromname) 2329 usage(B_FALSE); 2330 fromname = optarg; 2331 break; 2332 case 'I': 2333 if (fromname) 2334 usage(B_FALSE); 2335 fromname = optarg; 2336 doall = B_TRUE; 2337 break; 2338 case 'R': 2339 replicate = B_TRUE; 2340 break; 2341 case 'v': 2342 verbose = B_TRUE; 2343 break; 2344 case ':': 2345 (void) fprintf(stderr, gettext("missing argument for " 2346 "'%c' option\n"), optopt); 2347 usage(B_FALSE); 2348 break; 2349 case '?': 2350 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2351 optopt); 2352 usage(B_FALSE); 2353 } 2354 } 2355 2356 argc -= optind; 2357 argv += optind; 2358 2359 /* check number of arguments */ 2360 if (argc < 1) { 2361 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2362 usage(B_FALSE); 2363 } 2364 if (argc > 1) { 2365 (void) fprintf(stderr, gettext("too many arguments\n")); 2366 usage(B_FALSE); 2367 } 2368 2369 if (isatty(STDOUT_FILENO)) { 2370 (void) fprintf(stderr, 2371 gettext("Error: Stream can not be written to a terminal.\n" 2372 "You must redirect standard output.\n")); 2373 return (1); 2374 } 2375 2376 cp = strchr(argv[0], '@'); 2377 if (cp == NULL) { 2378 (void) fprintf(stderr, 2379 gettext("argument must be a snapshot\n")); 2380 usage(B_FALSE); 2381 } 2382 *cp = '\0'; 2383 toname = cp + 1; 2384 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2385 if (zhp == NULL) 2386 return (1); 2387 2388 /* 2389 * If they specified the full path to the snapshot, chop off 2390 * everything except the short name of the snapshot, but special 2391 * case if they specify the origin. 2392 */ 2393 if (fromname && (cp = strchr(fromname, '@')) != NULL) { 2394 char origin[ZFS_MAXNAMELEN]; 2395 zprop_source_t src; 2396 2397 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN, 2398 origin, sizeof (origin), &src, NULL, 0, B_FALSE); 2399 2400 if (strcmp(origin, fromname) == 0) { 2401 fromname = NULL; 2402 fromorigin = B_TRUE; 2403 } else { 2404 *cp = '\0'; 2405 if (cp != fromname && strcmp(argv[0], fromname)) { 2406 (void) fprintf(stderr, 2407 gettext("incremental source must be " 2408 "in same filesystem\n")); 2409 usage(B_FALSE); 2410 } 2411 fromname = cp + 1; 2412 if (strchr(fromname, '@') || strchr(fromname, '/')) { 2413 (void) fprintf(stderr, 2414 gettext("invalid incremental source\n")); 2415 usage(B_FALSE); 2416 } 2417 } 2418 } 2419 2420 if (replicate && fromname == NULL) 2421 doall = B_TRUE; 2422 2423 err = zfs_send(zhp, fromname, toname, replicate, doall, fromorigin, 2424 verbose, STDOUT_FILENO); 2425 zfs_close(zhp); 2426 2427 return (err != 0); 2428 } 2429 2430 /* 2431 * zfs receive [-dnvF] <fs@snap> 2432 * 2433 * Restore a backup stream from stdin. 2434 */ 2435 static int 2436 zfs_do_receive(int argc, char **argv) 2437 { 2438 int c, err; 2439 recvflags_t flags; 2440 2441 bzero(&flags, sizeof (recvflags_t)); 2442 /* check options */ 2443 while ((c = getopt(argc, argv, ":dnuvF")) != -1) { 2444 switch (c) { 2445 case 'd': 2446 flags.isprefix = B_TRUE; 2447 break; 2448 case 'n': 2449 flags.dryrun = B_TRUE; 2450 break; 2451 case 'u': 2452 flags.nomount = B_TRUE; 2453 break; 2454 case 'v': 2455 flags.verbose = B_TRUE; 2456 break; 2457 case 'F': 2458 flags.force = B_TRUE; 2459 break; 2460 case ':': 2461 (void) fprintf(stderr, gettext("missing argument for " 2462 "'%c' option\n"), optopt); 2463 usage(B_FALSE); 2464 break; 2465 case '?': 2466 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2467 optopt); 2468 usage(B_FALSE); 2469 } 2470 } 2471 2472 argc -= optind; 2473 argv += optind; 2474 2475 /* check number of arguments */ 2476 if (argc < 1) { 2477 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2478 usage(B_FALSE); 2479 } 2480 if (argc > 1) { 2481 (void) fprintf(stderr, gettext("too many arguments\n")); 2482 usage(B_FALSE); 2483 } 2484 2485 if (isatty(STDIN_FILENO)) { 2486 (void) fprintf(stderr, 2487 gettext("Error: Backup stream can not be read " 2488 "from a terminal.\n" 2489 "You must redirect standard input.\n")); 2490 return (1); 2491 } 2492 2493 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL); 2494 2495 return (err != 0); 2496 } 2497 2498 typedef struct allow_cb { 2499 int a_permcnt; 2500 size_t a_treeoffset; 2501 } allow_cb_t; 2502 2503 static void 2504 zfs_print_perms(avl_tree_t *tree) 2505 { 2506 zfs_perm_node_t *permnode; 2507 2508 permnode = avl_first(tree); 2509 while (permnode != NULL) { 2510 (void) printf("%s", permnode->z_pname); 2511 permnode = AVL_NEXT(tree, permnode); 2512 if (permnode) 2513 (void) printf(","); 2514 else 2515 (void) printf("\n"); 2516 } 2517 } 2518 2519 /* 2520 * Iterate over user/groups/everyone/... and the call perm_iter 2521 * function to print actual permission when tree has >0 nodes. 2522 */ 2523 static void 2524 zfs_iter_perms(avl_tree_t *tree, const char *banner, allow_cb_t *cb) 2525 { 2526 zfs_allow_node_t *item; 2527 avl_tree_t *ptree; 2528 2529 item = avl_first(tree); 2530 while (item) { 2531 ptree = (void *)((char *)item + cb->a_treeoffset); 2532 if (avl_numnodes(ptree)) { 2533 if (cb->a_permcnt++ == 0) 2534 (void) printf("%s\n", banner); 2535 (void) printf("\t%s", item->z_key); 2536 /* 2537 * Avoid an extra space being printed 2538 * for "everyone" which is keyed with a null 2539 * string 2540 */ 2541 if (item->z_key[0] != '\0') 2542 (void) printf(" "); 2543 zfs_print_perms(ptree); 2544 } 2545 item = AVL_NEXT(tree, item); 2546 } 2547 } 2548 2549 #define LINES "-------------------------------------------------------------\n" 2550 static int 2551 zfs_print_allows(char *ds) 2552 { 2553 zfs_allow_t *curperms, *perms; 2554 zfs_handle_t *zhp; 2555 allow_cb_t allowcb = { 0 }; 2556 char banner[MAXPATHLEN]; 2557 2558 if (ds[0] == '-') 2559 usage(B_FALSE); 2560 2561 if (strrchr(ds, '@')) { 2562 (void) fprintf(stderr, gettext("Snapshots don't have 'allow'" 2563 " permissions\n")); 2564 return (1); 2565 } 2566 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL) 2567 return (1); 2568 2569 if (zfs_perm_get(zhp, &perms)) { 2570 (void) fprintf(stderr, 2571 gettext("Failed to retrieve 'allows' on %s\n"), ds); 2572 zfs_close(zhp); 2573 return (1); 2574 } 2575 2576 zfs_close(zhp); 2577 2578 if (perms != NULL) 2579 (void) printf("%s", LINES); 2580 for (curperms = perms; curperms; curperms = curperms->z_next) { 2581 2582 (void) snprintf(banner, sizeof (banner), 2583 gettext("Permission sets on (%s)"), curperms->z_setpoint); 2584 allowcb.a_treeoffset = 2585 offsetof(zfs_allow_node_t, z_localdescend); 2586 allowcb.a_permcnt = 0; 2587 zfs_iter_perms(&curperms->z_sets, banner, &allowcb); 2588 2589 (void) snprintf(banner, sizeof (banner), 2590 gettext("Create time permissions on (%s)"), 2591 curperms->z_setpoint); 2592 allowcb.a_treeoffset = 2593 offsetof(zfs_allow_node_t, z_localdescend); 2594 allowcb.a_permcnt = 0; 2595 zfs_iter_perms(&curperms->z_crperms, banner, &allowcb); 2596 2597 2598 (void) snprintf(banner, sizeof (banner), 2599 gettext("Local permissions on (%s)"), curperms->z_setpoint); 2600 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_local); 2601 allowcb.a_permcnt = 0; 2602 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2603 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2604 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2605 2606 (void) snprintf(banner, sizeof (banner), 2607 gettext("Descendent permissions on (%s)"), 2608 curperms->z_setpoint); 2609 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_descend); 2610 allowcb.a_permcnt = 0; 2611 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2612 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2613 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2614 2615 (void) snprintf(banner, sizeof (banner), 2616 gettext("Local+Descendent permissions on (%s)"), 2617 curperms->z_setpoint); 2618 allowcb.a_treeoffset = 2619 offsetof(zfs_allow_node_t, z_localdescend); 2620 allowcb.a_permcnt = 0; 2621 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2622 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2623 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2624 2625 (void) printf("%s", LINES); 2626 } 2627 zfs_free_allows(perms); 2628 return (0); 2629 } 2630 2631 #define ALLOWOPTIONS "ldcsu:g:e" 2632 #define UNALLOWOPTIONS "ldcsu:g:er" 2633 2634 /* 2635 * Validate options, and build necessary datastructure to display/remove/add 2636 * permissions. 2637 * Returns 0 - If permissions should be added/removed 2638 * Returns 1 - If permissions should be displayed. 2639 * Returns -1 - on failure 2640 */ 2641 int 2642 parse_allow_args(int *argc, char **argv[], boolean_t unallow, 2643 char **ds, int *recurse, nvlist_t **zperms) 2644 { 2645 int c; 2646 char *options = unallow ? UNALLOWOPTIONS : ALLOWOPTIONS; 2647 zfs_deleg_inherit_t deleg_type = ZFS_DELEG_NONE; 2648 zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN; 2649 char *who = NULL; 2650 char *perms = NULL; 2651 zfs_handle_t *zhp; 2652 2653 while ((c = getopt(*argc, *argv, options)) != -1) { 2654 switch (c) { 2655 case 'l': 2656 if (who_type == ZFS_DELEG_CREATE || 2657 who_type == ZFS_DELEG_NAMED_SET) 2658 usage(B_FALSE); 2659 2660 deleg_type |= ZFS_DELEG_PERM_LOCAL; 2661 break; 2662 case 'd': 2663 if (who_type == ZFS_DELEG_CREATE || 2664 who_type == ZFS_DELEG_NAMED_SET) 2665 usage(B_FALSE); 2666 2667 deleg_type |= ZFS_DELEG_PERM_DESCENDENT; 2668 break; 2669 case 'r': 2670 *recurse = B_TRUE; 2671 break; 2672 case 'c': 2673 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2674 usage(B_FALSE); 2675 if (deleg_type) 2676 usage(B_FALSE); 2677 who_type = ZFS_DELEG_CREATE; 2678 break; 2679 case 's': 2680 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2681 usage(B_FALSE); 2682 if (deleg_type) 2683 usage(B_FALSE); 2684 who_type = ZFS_DELEG_NAMED_SET; 2685 break; 2686 case 'u': 2687 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2688 usage(B_FALSE); 2689 who_type = ZFS_DELEG_USER; 2690 who = optarg; 2691 break; 2692 case 'g': 2693 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2694 usage(B_FALSE); 2695 who_type = ZFS_DELEG_GROUP; 2696 who = optarg; 2697 break; 2698 case 'e': 2699 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2700 usage(B_FALSE); 2701 who_type = ZFS_DELEG_EVERYONE; 2702 break; 2703 default: 2704 usage(B_FALSE); 2705 break; 2706 } 2707 } 2708 2709 if (deleg_type == 0) 2710 deleg_type = ZFS_DELEG_PERM_LOCALDESCENDENT; 2711 2712 *argc -= optind; 2713 *argv += optind; 2714 2715 if (unallow == B_FALSE && *argc == 1) { 2716 /* 2717 * Only print permissions if no options were processed 2718 */ 2719 if (optind == 1) 2720 return (1); 2721 else 2722 usage(B_FALSE); 2723 } 2724 2725 /* 2726 * initialize variables for zfs_build_perms based on number 2727 * of arguments. 2728 * 3 arguments ==> zfs [un]allow joe perm,perm,perm <dataset> or 2729 * zfs [un]allow -s @set1 perm,perm <dataset> 2730 * 2 arguments ==> zfs [un]allow -c perm,perm <dataset> or 2731 * zfs [un]allow -u|-g <name> perm <dataset> or 2732 * zfs [un]allow -e perm,perm <dataset> 2733 * zfs unallow joe <dataset> 2734 * zfs unallow -s @set1 <dataset> 2735 * 1 argument ==> zfs [un]allow -e <dataset> or 2736 * zfs [un]allow -c <dataset> 2737 */ 2738 2739 switch (*argc) { 2740 case 3: 2741 perms = (*argv)[1]; 2742 who = (*argv)[0]; 2743 *ds = (*argv)[2]; 2744 2745 /* 2746 * advance argc/argv for do_allow cases. 2747 * for do_allow case make sure who have a know who type 2748 * and its not a permission set. 2749 */ 2750 if (unallow == B_TRUE) { 2751 *argc -= 2; 2752 *argv += 2; 2753 } else if (who_type != ZFS_DELEG_WHO_UNKNOWN && 2754 who_type != ZFS_DELEG_NAMED_SET) 2755 usage(B_FALSE); 2756 break; 2757 2758 case 2: 2759 if (unallow == B_TRUE && (who_type == ZFS_DELEG_EVERYONE || 2760 who_type == ZFS_DELEG_CREATE || who != NULL)) { 2761 perms = (*argv)[0]; 2762 *ds = (*argv)[1]; 2763 } else { 2764 if (unallow == B_FALSE && 2765 (who_type == ZFS_DELEG_WHO_UNKNOWN || 2766 who_type == ZFS_DELEG_NAMED_SET)) 2767 usage(B_FALSE); 2768 else if (who_type == ZFS_DELEG_WHO_UNKNOWN || 2769 who_type == ZFS_DELEG_NAMED_SET) 2770 who = (*argv)[0]; 2771 else if (who_type != ZFS_DELEG_NAMED_SET) 2772 perms = (*argv)[0]; 2773 *ds = (*argv)[1]; 2774 } 2775 if (unallow == B_TRUE) { 2776 (*argc)--; 2777 (*argv)++; 2778 } 2779 break; 2780 2781 case 1: 2782 if (unallow == B_FALSE) 2783 usage(B_FALSE); 2784 if (who == NULL && who_type != ZFS_DELEG_CREATE && 2785 who_type != ZFS_DELEG_EVERYONE) 2786 usage(B_FALSE); 2787 *ds = (*argv)[0]; 2788 break; 2789 2790 default: 2791 usage(B_FALSE); 2792 } 2793 2794 if (strrchr(*ds, '@')) { 2795 (void) fprintf(stderr, 2796 gettext("Can't set or remove 'allow' permissions " 2797 "on snapshots.\n")); 2798 return (-1); 2799 } 2800 2801 if ((zhp = zfs_open(g_zfs, *ds, ZFS_TYPE_DATASET)) == NULL) 2802 return (-1); 2803 2804 if ((zfs_build_perms(zhp, who, perms, 2805 who_type, deleg_type, zperms)) != 0) { 2806 zfs_close(zhp); 2807 return (-1); 2808 } 2809 zfs_close(zhp); 2810 return (0); 2811 } 2812 2813 static int 2814 zfs_do_allow(int argc, char **argv) 2815 { 2816 char *ds; 2817 nvlist_t *zperms = NULL; 2818 zfs_handle_t *zhp; 2819 int unused; 2820 int ret; 2821 2822 if ((ret = parse_allow_args(&argc, &argv, B_FALSE, &ds, 2823 &unused, &zperms)) == -1) 2824 return (1); 2825 2826 if (ret == 1) 2827 return (zfs_print_allows(argv[0])); 2828 2829 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL) 2830 return (1); 2831 2832 if (zfs_perm_set(zhp, zperms)) { 2833 zfs_close(zhp); 2834 nvlist_free(zperms); 2835 return (1); 2836 } 2837 nvlist_free(zperms); 2838 zfs_close(zhp); 2839 2840 return (0); 2841 } 2842 2843 static int 2844 unallow_callback(zfs_handle_t *zhp, void *data) 2845 { 2846 nvlist_t *nvp = (nvlist_t *)data; 2847 int error; 2848 2849 error = zfs_perm_remove(zhp, nvp); 2850 if (error) { 2851 (void) fprintf(stderr, gettext("Failed to remove permissions " 2852 "on %s\n"), zfs_get_name(zhp)); 2853 } 2854 return (error); 2855 } 2856 2857 static int 2858 zfs_do_unallow(int argc, char **argv) 2859 { 2860 int recurse = B_FALSE; 2861 char *ds; 2862 int error; 2863 nvlist_t *zperms = NULL; 2864 int flags = 0; 2865 2866 if (parse_allow_args(&argc, &argv, B_TRUE, 2867 &ds, &recurse, &zperms) == -1) 2868 return (1); 2869 2870 if (recurse) 2871 flags |= ZFS_ITER_RECURSE; 2872 error = zfs_for_each(argc, argv, flags, 2873 ZFS_TYPE_FILESYSTEM|ZFS_TYPE_VOLUME, NULL, 2874 NULL, unallow_callback, (void *)zperms); 2875 2876 if (zperms) 2877 nvlist_free(zperms); 2878 2879 return (error); 2880 } 2881 2882 typedef struct get_all_cbdata { 2883 zfs_handle_t **cb_handles; 2884 size_t cb_alloc; 2885 size_t cb_used; 2886 uint_t cb_types; 2887 boolean_t cb_verbose; 2888 } get_all_cbdata_t; 2889 2890 #define CHECK_SPINNER 30 2891 #define SPINNER_TIME 3 /* seconds */ 2892 #define MOUNT_TIME 5 /* seconds */ 2893 2894 static int 2895 get_one_dataset(zfs_handle_t *zhp, void *data) 2896 { 2897 static char spin[] = { '-', '\\', '|', '/' }; 2898 static int spinval = 0; 2899 static int spincheck = 0; 2900 static time_t last_spin_time = (time_t)0; 2901 get_all_cbdata_t *cbp = data; 2902 zfs_type_t type = zfs_get_type(zhp); 2903 2904 if (cbp->cb_verbose) { 2905 if (--spincheck < 0) { 2906 time_t now = time(NULL); 2907 if (last_spin_time + SPINNER_TIME < now) { 2908 (void) printf("\b%c", spin[spinval++ % 4]); 2909 (void) fflush(stdout); 2910 last_spin_time = now; 2911 } 2912 spincheck = CHECK_SPINNER; 2913 } 2914 } 2915 2916 /* 2917 * Interate over any nested datasets. 2918 */ 2919 if (type == ZFS_TYPE_FILESYSTEM && 2920 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) { 2921 zfs_close(zhp); 2922 return (1); 2923 } 2924 2925 /* 2926 * Skip any datasets whose type does not match. 2927 */ 2928 if ((type & cbp->cb_types) == 0) { 2929 zfs_close(zhp); 2930 return (0); 2931 } 2932 2933 if (cbp->cb_alloc == cbp->cb_used) { 2934 zfs_handle_t **handles; 2935 2936 if (cbp->cb_alloc == 0) 2937 cbp->cb_alloc = 64; 2938 else 2939 cbp->cb_alloc *= 2; 2940 2941 handles = safe_malloc(cbp->cb_alloc * sizeof (void *)); 2942 2943 if (cbp->cb_handles) { 2944 bcopy(cbp->cb_handles, handles, 2945 cbp->cb_used * sizeof (void *)); 2946 free(cbp->cb_handles); 2947 } 2948 2949 cbp->cb_handles = handles; 2950 } 2951 2952 cbp->cb_handles[cbp->cb_used++] = zhp; 2953 2954 return (0); 2955 } 2956 2957 static void 2958 get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count, 2959 boolean_t verbose) 2960 { 2961 get_all_cbdata_t cb = { 0 }; 2962 cb.cb_types = types; 2963 cb.cb_verbose = verbose; 2964 2965 if (verbose) { 2966 (void) printf("%s: *", gettext("Reading ZFS config")); 2967 (void) fflush(stdout); 2968 } 2969 2970 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb); 2971 2972 *dslist = cb.cb_handles; 2973 *count = cb.cb_used; 2974 2975 if (verbose) { 2976 (void) printf("\b%s\n", gettext("done.")); 2977 } 2978 } 2979 2980 static int 2981 dataset_cmp(const void *a, const void *b) 2982 { 2983 zfs_handle_t **za = (zfs_handle_t **)a; 2984 zfs_handle_t **zb = (zfs_handle_t **)b; 2985 char mounta[MAXPATHLEN]; 2986 char mountb[MAXPATHLEN]; 2987 boolean_t gota, gotb; 2988 2989 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0) 2990 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta, 2991 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0); 2992 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0) 2993 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb, 2994 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0); 2995 2996 if (gota && gotb) 2997 return (strcmp(mounta, mountb)); 2998 2999 if (gota) 3000 return (-1); 3001 if (gotb) 3002 return (1); 3003 3004 return (strcmp(zfs_get_name(a), zfs_get_name(b))); 3005 } 3006 3007 /* 3008 * Generic callback for sharing or mounting filesystems. Because the code is so 3009 * similar, we have a common function with an extra parameter to determine which 3010 * mode we are using. 3011 */ 3012 #define OP_SHARE 0x1 3013 #define OP_MOUNT 0x2 3014 3015 /* 3016 * Share or mount a dataset. 3017 */ 3018 static int 3019 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol, 3020 boolean_t explicit, const char *options) 3021 { 3022 char mountpoint[ZFS_MAXPROPLEN]; 3023 char shareopts[ZFS_MAXPROPLEN]; 3024 char smbshareopts[ZFS_MAXPROPLEN]; 3025 const char *cmdname = op == OP_SHARE ? "share" : "mount"; 3026 struct mnttab mnt; 3027 uint64_t zoned, canmount; 3028 zfs_type_t type = zfs_get_type(zhp); 3029 boolean_t shared_nfs, shared_smb; 3030 3031 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)); 3032 3033 if (type == ZFS_TYPE_FILESYSTEM) { 3034 /* 3035 * Check to make sure we can mount/share this dataset. If we 3036 * are in the global zone and the filesystem is exported to a 3037 * local zone, or if we are in a local zone and the 3038 * filesystem is not exported, then it is an error. 3039 */ 3040 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 3041 3042 if (zoned && getzoneid() == GLOBAL_ZONEID) { 3043 if (!explicit) 3044 return (0); 3045 3046 (void) fprintf(stderr, gettext("cannot %s '%s': " 3047 "dataset is exported to a local zone\n"), cmdname, 3048 zfs_get_name(zhp)); 3049 return (1); 3050 3051 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) { 3052 if (!explicit) 3053 return (0); 3054 3055 (void) fprintf(stderr, gettext("cannot %s '%s': " 3056 "permission denied\n"), cmdname, 3057 zfs_get_name(zhp)); 3058 return (1); 3059 } 3060 3061 /* 3062 * Ignore any filesystems which don't apply to us. This 3063 * includes those with a legacy mountpoint, or those with 3064 * legacy share options. 3065 */ 3066 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 3067 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0); 3068 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts, 3069 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3070 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts, 3071 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0); 3072 3073 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 && 3074 strcmp(smbshareopts, "off") == 0) { 3075 if (!explicit) 3076 return (0); 3077 3078 (void) fprintf(stderr, gettext("cannot share '%s': " 3079 "legacy share\n"), zfs_get_name(zhp)); 3080 (void) fprintf(stderr, gettext("use share(1M) to " 3081 "share this filesystem, or set " 3082 "sharenfs property on\n")); 3083 return (1); 3084 } 3085 3086 /* 3087 * We cannot share or mount legacy filesystems. If the 3088 * shareopts is non-legacy but the mountpoint is legacy, we 3089 * treat it as a legacy share. 3090 */ 3091 if (strcmp(mountpoint, "legacy") == 0) { 3092 if (!explicit) 3093 return (0); 3094 3095 (void) fprintf(stderr, gettext("cannot %s '%s': " 3096 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp)); 3097 (void) fprintf(stderr, gettext("use %s(1M) to " 3098 "%s this filesystem\n"), cmdname, cmdname); 3099 return (1); 3100 } 3101 3102 if (strcmp(mountpoint, "none") == 0) { 3103 if (!explicit) 3104 return (0); 3105 3106 (void) fprintf(stderr, gettext("cannot %s '%s': no " 3107 "mountpoint set\n"), cmdname, zfs_get_name(zhp)); 3108 return (1); 3109 } 3110 3111 /* 3112 * canmount explicit outcome 3113 * on no pass through 3114 * on yes pass through 3115 * off no return 0 3116 * off yes display error, return 1 3117 * noauto no return 0 3118 * noauto yes pass through 3119 */ 3120 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 3121 if (canmount == ZFS_CANMOUNT_OFF) { 3122 if (!explicit) 3123 return (0); 3124 3125 (void) fprintf(stderr, gettext("cannot %s '%s': " 3126 "'canmount' property is set to 'off'\n"), cmdname, 3127 zfs_get_name(zhp)); 3128 return (1); 3129 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) { 3130 return (0); 3131 } 3132 3133 /* 3134 * At this point, we have verified that the mountpoint and/or 3135 * shareopts are appropriate for auto management. If the 3136 * filesystem is already mounted or shared, return (failing 3137 * for explicit requests); otherwise mount or share the 3138 * filesystem. 3139 */ 3140 switch (op) { 3141 case OP_SHARE: 3142 3143 shared_nfs = zfs_is_shared_nfs(zhp, NULL); 3144 shared_smb = zfs_is_shared_smb(zhp, NULL); 3145 3146 if (shared_nfs && shared_smb || 3147 (shared_nfs && strcmp(shareopts, "on") == 0 && 3148 strcmp(smbshareopts, "off") == 0) || 3149 (shared_smb && strcmp(smbshareopts, "on") == 0 && 3150 strcmp(shareopts, "off") == 0)) { 3151 if (!explicit) 3152 return (0); 3153 3154 (void) fprintf(stderr, gettext("cannot share " 3155 "'%s': filesystem already shared\n"), 3156 zfs_get_name(zhp)); 3157 return (1); 3158 } 3159 3160 if (!zfs_is_mounted(zhp, NULL) && 3161 zfs_mount(zhp, NULL, 0) != 0) 3162 return (1); 3163 3164 if (protocol == NULL) { 3165 if (zfs_shareall(zhp) != 0) 3166 return (1); 3167 } else if (strcmp(protocol, "nfs") == 0) { 3168 if (zfs_share_nfs(zhp)) 3169 return (1); 3170 } else if (strcmp(protocol, "smb") == 0) { 3171 if (zfs_share_smb(zhp)) 3172 return (1); 3173 } else { 3174 (void) fprintf(stderr, gettext("cannot share " 3175 "'%s': invalid share type '%s' " 3176 "specified\n"), 3177 zfs_get_name(zhp), protocol); 3178 return (1); 3179 } 3180 3181 break; 3182 3183 case OP_MOUNT: 3184 if (options == NULL) 3185 mnt.mnt_mntopts = ""; 3186 else 3187 mnt.mnt_mntopts = (char *)options; 3188 3189 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) && 3190 zfs_is_mounted(zhp, NULL)) { 3191 if (!explicit) 3192 return (0); 3193 3194 (void) fprintf(stderr, gettext("cannot mount " 3195 "'%s': filesystem already mounted\n"), 3196 zfs_get_name(zhp)); 3197 return (1); 3198 } 3199 3200 if (zfs_mount(zhp, options, flags) != 0) 3201 return (1); 3202 break; 3203 } 3204 } else { 3205 assert(op == OP_SHARE); 3206 3207 /* 3208 * Ignore any volumes that aren't shared. 3209 */ 3210 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts, 3211 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3212 3213 if (strcmp(shareopts, "off") == 0) { 3214 if (!explicit) 3215 return (0); 3216 3217 (void) fprintf(stderr, gettext("cannot share '%s': " 3218 "'shareiscsi' property not set\n"), 3219 zfs_get_name(zhp)); 3220 (void) fprintf(stderr, gettext("set 'shareiscsi' " 3221 "property or use iscsitadm(1M) to share this " 3222 "volume\n")); 3223 return (1); 3224 } 3225 3226 if (zfs_is_shared_iscsi(zhp)) { 3227 if (!explicit) 3228 return (0); 3229 3230 (void) fprintf(stderr, gettext("cannot share " 3231 "'%s': volume already shared\n"), 3232 zfs_get_name(zhp)); 3233 return (1); 3234 } 3235 3236 if (zfs_share_iscsi(zhp) != 0) 3237 return (1); 3238 } 3239 3240 return (0); 3241 } 3242 3243 /* 3244 * Reports progress in the form "(current/total)". Not thread-safe. 3245 */ 3246 static void 3247 report_mount_progress(int current, int total) 3248 { 3249 static int len; 3250 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b" 3251 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"; 3252 static time_t last_progress_time; 3253 time_t now = time(NULL); 3254 3255 /* report 1..n instead of 0..n-1 */ 3256 ++current; 3257 3258 /* display header if we're here for the first time */ 3259 if (current == 1) { 3260 (void) printf(gettext("Mounting ZFS filesystems: ")); 3261 len = 0; 3262 } else if (current != total && last_progress_time + MOUNT_TIME >= now) { 3263 /* too soon to report again */ 3264 return; 3265 } 3266 3267 last_progress_time = now; 3268 3269 /* back up to prepare for overwriting */ 3270 if (len) 3271 (void) printf("%*.*s", len, len, reverse); 3272 3273 /* We put a newline at the end if this is the last one. */ 3274 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : ""); 3275 (void) fflush(stdout); 3276 } 3277 3278 static void 3279 append_options(char *mntopts, char *newopts) 3280 { 3281 int len = strlen(mntopts); 3282 3283 /* original length plus new string to append plus 1 for the comma */ 3284 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) { 3285 (void) fprintf(stderr, gettext("the opts argument for " 3286 "'%c' option is too long (more than %d chars)\n"), 3287 "-o", MNT_LINE_MAX); 3288 usage(B_FALSE); 3289 } 3290 3291 if (*mntopts) 3292 mntopts[len++] = ','; 3293 3294 (void) strcpy(&mntopts[len], newopts); 3295 } 3296 3297 static int 3298 share_mount(int op, int argc, char **argv) 3299 { 3300 int do_all = 0; 3301 boolean_t verbose = B_FALSE; 3302 int c, ret = 0; 3303 char *options = NULL; 3304 int types, flags = 0; 3305 3306 /* check options */ 3307 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a")) 3308 != -1) { 3309 switch (c) { 3310 case 'a': 3311 do_all = 1; 3312 break; 3313 case 'v': 3314 verbose = B_TRUE; 3315 break; 3316 case 'o': 3317 if (*optarg == '\0') { 3318 (void) fprintf(stderr, gettext("empty mount " 3319 "options (-o) specified\n")); 3320 usage(B_FALSE); 3321 } 3322 3323 if (options == NULL) 3324 options = safe_malloc(MNT_LINE_MAX + 1); 3325 3326 /* option validation is done later */ 3327 append_options(options, optarg); 3328 break; 3329 3330 case 'O': 3331 flags |= MS_OVERLAY; 3332 break; 3333 case ':': 3334 (void) fprintf(stderr, gettext("missing argument for " 3335 "'%c' option\n"), optopt); 3336 usage(B_FALSE); 3337 break; 3338 case '?': 3339 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3340 optopt); 3341 usage(B_FALSE); 3342 } 3343 } 3344 3345 argc -= optind; 3346 argv += optind; 3347 3348 /* check number of arguments */ 3349 if (do_all) { 3350 zfs_handle_t **dslist = NULL; 3351 size_t i, count = 0; 3352 char *protocol = NULL; 3353 3354 if (op == OP_MOUNT) { 3355 types = ZFS_TYPE_FILESYSTEM; 3356 } else if (argc > 0) { 3357 if (strcmp(argv[0], "nfs") == 0 || 3358 strcmp(argv[0], "smb") == 0) { 3359 types = ZFS_TYPE_FILESYSTEM; 3360 } else if (strcmp(argv[0], "iscsi") == 0) { 3361 types = ZFS_TYPE_VOLUME; 3362 } else { 3363 (void) fprintf(stderr, gettext("share type " 3364 "must be 'nfs', 'smb' or 'iscsi'\n")); 3365 usage(B_FALSE); 3366 } 3367 protocol = argv[0]; 3368 argc--; 3369 argv++; 3370 } else { 3371 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME; 3372 } 3373 3374 if (argc != 0) { 3375 (void) fprintf(stderr, gettext("too many arguments\n")); 3376 usage(B_FALSE); 3377 } 3378 3379 get_all_datasets(types, &dslist, &count, verbose); 3380 3381 if (count == 0) 3382 return (0); 3383 3384 qsort(dslist, count, sizeof (void *), dataset_cmp); 3385 3386 for (i = 0; i < count; i++) { 3387 if (verbose) 3388 report_mount_progress(i, count); 3389 3390 if (share_mount_one(dslist[i], op, flags, protocol, 3391 B_FALSE, options) != 0) 3392 ret = 1; 3393 zfs_close(dslist[i]); 3394 } 3395 3396 free(dslist); 3397 } else if (argc == 0) { 3398 struct mnttab entry; 3399 3400 if ((op == OP_SHARE) || (options != NULL)) { 3401 (void) fprintf(stderr, gettext("missing filesystem " 3402 "argument (specify -a for all)\n")); 3403 usage(B_FALSE); 3404 } 3405 3406 /* 3407 * When mount is given no arguments, go through /etc/mnttab and 3408 * display any active ZFS mounts. We hide any snapshots, since 3409 * they are controlled automatically. 3410 */ 3411 rewind(mnttab_file); 3412 while (getmntent(mnttab_file, &entry) == 0) { 3413 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 || 3414 strchr(entry.mnt_special, '@') != NULL) 3415 continue; 3416 3417 (void) printf("%-30s %s\n", entry.mnt_special, 3418 entry.mnt_mountp); 3419 } 3420 3421 } else { 3422 zfs_handle_t *zhp; 3423 3424 types = ZFS_TYPE_FILESYSTEM; 3425 if (op == OP_SHARE) 3426 types |= ZFS_TYPE_VOLUME; 3427 3428 if (argc > 1) { 3429 (void) fprintf(stderr, 3430 gettext("too many arguments\n")); 3431 usage(B_FALSE); 3432 } 3433 3434 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) { 3435 ret = 1; 3436 } else { 3437 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE, 3438 options); 3439 zfs_close(zhp); 3440 } 3441 } 3442 3443 return (ret); 3444 } 3445 3446 /* 3447 * zfs mount -a [nfs | iscsi] 3448 * zfs mount filesystem 3449 * 3450 * Mount all filesystems, or mount the given filesystem. 3451 */ 3452 static int 3453 zfs_do_mount(int argc, char **argv) 3454 { 3455 return (share_mount(OP_MOUNT, argc, argv)); 3456 } 3457 3458 /* 3459 * zfs share -a [nfs | iscsi | smb] 3460 * zfs share filesystem 3461 * 3462 * Share all filesystems, or share the given filesystem. 3463 */ 3464 static int 3465 zfs_do_share(int argc, char **argv) 3466 { 3467 return (share_mount(OP_SHARE, argc, argv)); 3468 } 3469 3470 typedef struct unshare_unmount_node { 3471 zfs_handle_t *un_zhp; 3472 char *un_mountp; 3473 uu_avl_node_t un_avlnode; 3474 } unshare_unmount_node_t; 3475 3476 /* ARGSUSED */ 3477 static int 3478 unshare_unmount_compare(const void *larg, const void *rarg, void *unused) 3479 { 3480 const unshare_unmount_node_t *l = larg; 3481 const unshare_unmount_node_t *r = rarg; 3482 3483 return (strcmp(l->un_mountp, r->un_mountp)); 3484 } 3485 3486 /* 3487 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an 3488 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem, 3489 * and unmount it appropriately. 3490 */ 3491 static int 3492 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual) 3493 { 3494 zfs_handle_t *zhp; 3495 int ret; 3496 struct stat64 statbuf; 3497 struct extmnttab entry; 3498 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount"; 3499 ino_t path_inode; 3500 3501 /* 3502 * Search for the path in /etc/mnttab. Rather than looking for the 3503 * specific path, which can be fooled by non-standard paths (i.e. ".." 3504 * or "//"), we stat() the path and search for the corresponding 3505 * (major,minor) device pair. 3506 */ 3507 if (stat64(path, &statbuf) != 0) { 3508 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3509 cmdname, path, strerror(errno)); 3510 return (1); 3511 } 3512 path_inode = statbuf.st_ino; 3513 3514 /* 3515 * Search for the given (major,minor) pair in the mount table. 3516 */ 3517 rewind(mnttab_file); 3518 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) { 3519 if (entry.mnt_major == major(statbuf.st_dev) && 3520 entry.mnt_minor == minor(statbuf.st_dev)) 3521 break; 3522 } 3523 if (ret != 0) { 3524 if (op == OP_SHARE) { 3525 (void) fprintf(stderr, gettext("cannot %s '%s': not " 3526 "currently mounted\n"), cmdname, path); 3527 return (1); 3528 } 3529 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"), 3530 path); 3531 if ((ret = umount2(path, flags)) != 0) 3532 (void) fprintf(stderr, gettext("%s: %s\n"), path, 3533 strerror(errno)); 3534 return (ret != 0); 3535 } 3536 3537 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) { 3538 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS " 3539 "filesystem\n"), cmdname, path); 3540 return (1); 3541 } 3542 3543 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3544 ZFS_TYPE_FILESYSTEM)) == NULL) 3545 return (1); 3546 3547 ret = 1; 3548 if (stat64(entry.mnt_mountp, &statbuf) != 0) { 3549 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3550 cmdname, path, strerror(errno)); 3551 goto out; 3552 } else if (statbuf.st_ino != path_inode) { 3553 (void) fprintf(stderr, gettext("cannot " 3554 "%s '%s': not a mountpoint\n"), cmdname, path); 3555 goto out; 3556 } 3557 3558 if (op == OP_SHARE) { 3559 char nfs_mnt_prop[ZFS_MAXPROPLEN]; 3560 char smbshare_prop[ZFS_MAXPROPLEN]; 3561 3562 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop, 3563 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0); 3564 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop, 3565 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0); 3566 3567 if (strcmp(nfs_mnt_prop, "off") == 0 && 3568 strcmp(smbshare_prop, "off") == 0) { 3569 (void) fprintf(stderr, gettext("cannot unshare " 3570 "'%s': legacy share\n"), path); 3571 (void) fprintf(stderr, gettext("use " 3572 "unshare(1M) to unshare this filesystem\n")); 3573 } else if (!zfs_is_shared(zhp)) { 3574 (void) fprintf(stderr, gettext("cannot unshare '%s': " 3575 "not currently shared\n"), path); 3576 } else { 3577 ret = zfs_unshareall_bypath(zhp, path); 3578 } 3579 } else { 3580 char mtpt_prop[ZFS_MAXPROPLEN]; 3581 3582 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop, 3583 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0); 3584 3585 if (is_manual) { 3586 ret = zfs_unmount(zhp, NULL, flags); 3587 } else if (strcmp(mtpt_prop, "legacy") == 0) { 3588 (void) fprintf(stderr, gettext("cannot unmount " 3589 "'%s': legacy mountpoint\n"), 3590 zfs_get_name(zhp)); 3591 (void) fprintf(stderr, gettext("use umount(1M) " 3592 "to unmount this filesystem\n")); 3593 } else { 3594 ret = zfs_unmountall(zhp, flags); 3595 } 3596 } 3597 3598 out: 3599 zfs_close(zhp); 3600 3601 return (ret != 0); 3602 } 3603 3604 /* 3605 * Generic callback for unsharing or unmounting a filesystem. 3606 */ 3607 static int 3608 unshare_unmount(int op, int argc, char **argv) 3609 { 3610 int do_all = 0; 3611 int flags = 0; 3612 int ret = 0; 3613 int types, c; 3614 zfs_handle_t *zhp; 3615 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN]; 3616 char sharesmb[ZFS_MAXPROPLEN]; 3617 3618 /* check options */ 3619 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) { 3620 switch (c) { 3621 case 'a': 3622 do_all = 1; 3623 break; 3624 case 'f': 3625 flags = MS_FORCE; 3626 break; 3627 case '?': 3628 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3629 optopt); 3630 usage(B_FALSE); 3631 } 3632 } 3633 3634 argc -= optind; 3635 argv += optind; 3636 3637 if (do_all) { 3638 /* 3639 * We could make use of zfs_for_each() to walk all datasets in 3640 * the system, but this would be very inefficient, especially 3641 * since we would have to linearly search /etc/mnttab for each 3642 * one. Instead, do one pass through /etc/mnttab looking for 3643 * zfs entries and call zfs_unmount() for each one. 3644 * 3645 * Things get a little tricky if the administrator has created 3646 * mountpoints beneath other ZFS filesystems. In this case, we 3647 * have to unmount the deepest filesystems first. To accomplish 3648 * this, we place all the mountpoints in an AVL tree sorted by 3649 * the special type (dataset name), and walk the result in 3650 * reverse to make sure to get any snapshots first. 3651 */ 3652 struct mnttab entry; 3653 uu_avl_pool_t *pool; 3654 uu_avl_t *tree; 3655 unshare_unmount_node_t *node; 3656 uu_avl_index_t idx; 3657 uu_avl_walk_t *walk; 3658 3659 if (argc != 0) { 3660 (void) fprintf(stderr, gettext("too many arguments\n")); 3661 usage(B_FALSE); 3662 } 3663 3664 if ((pool = uu_avl_pool_create("unmount_pool", 3665 sizeof (unshare_unmount_node_t), 3666 offsetof(unshare_unmount_node_t, un_avlnode), 3667 unshare_unmount_compare, 3668 UU_DEFAULT)) == NULL) { 3669 (void) fprintf(stderr, gettext("internal error: " 3670 "out of memory\n")); 3671 exit(1); 3672 } 3673 3674 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) { 3675 (void) fprintf(stderr, gettext("internal error: " 3676 "out of memory\n")); 3677 exit(1); 3678 } 3679 3680 rewind(mnttab_file); 3681 while (getmntent(mnttab_file, &entry) == 0) { 3682 3683 /* ignore non-ZFS entries */ 3684 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 3685 continue; 3686 3687 /* ignore snapshots */ 3688 if (strchr(entry.mnt_special, '@') != NULL) 3689 continue; 3690 3691 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3692 ZFS_TYPE_FILESYSTEM)) == NULL) { 3693 ret = 1; 3694 continue; 3695 } 3696 3697 switch (op) { 3698 case OP_SHARE: 3699 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3700 nfsiscsi_mnt_prop, 3701 sizeof (nfsiscsi_mnt_prop), 3702 NULL, NULL, 0, B_FALSE) == 0); 3703 if (strcmp(nfsiscsi_mnt_prop, "off") != 0) 3704 break; 3705 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3706 nfsiscsi_mnt_prop, 3707 sizeof (nfsiscsi_mnt_prop), 3708 NULL, NULL, 0, B_FALSE) == 0); 3709 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) 3710 continue; 3711 break; 3712 case OP_MOUNT: 3713 /* Ignore legacy mounts */ 3714 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, 3715 nfsiscsi_mnt_prop, 3716 sizeof (nfsiscsi_mnt_prop), 3717 NULL, NULL, 0, B_FALSE) == 0); 3718 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) 3719 continue; 3720 /* Ignore canmount=noauto mounts */ 3721 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == 3722 ZFS_CANMOUNT_NOAUTO) 3723 continue; 3724 default: 3725 break; 3726 } 3727 3728 node = safe_malloc(sizeof (unshare_unmount_node_t)); 3729 node->un_zhp = zhp; 3730 3731 if ((node->un_mountp = strdup(entry.mnt_mountp)) == 3732 NULL) { 3733 (void) fprintf(stderr, gettext("internal error:" 3734 " out of memory\n")); 3735 exit(1); 3736 } 3737 3738 uu_avl_node_init(node, &node->un_avlnode, pool); 3739 3740 if (uu_avl_find(tree, node, NULL, &idx) == NULL) { 3741 uu_avl_insert(tree, node, idx); 3742 } else { 3743 zfs_close(node->un_zhp); 3744 free(node->un_mountp); 3745 free(node); 3746 } 3747 } 3748 3749 /* 3750 * Walk the AVL tree in reverse, unmounting each filesystem and 3751 * removing it from the AVL tree in the process. 3752 */ 3753 if ((walk = uu_avl_walk_start(tree, 3754 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) { 3755 (void) fprintf(stderr, 3756 gettext("internal error: out of memory")); 3757 exit(1); 3758 } 3759 3760 while ((node = uu_avl_walk_next(walk)) != NULL) { 3761 uu_avl_remove(tree, node); 3762 3763 switch (op) { 3764 case OP_SHARE: 3765 if (zfs_unshareall_bypath(node->un_zhp, 3766 node->un_mountp) != 0) 3767 ret = 1; 3768 break; 3769 3770 case OP_MOUNT: 3771 if (zfs_unmount(node->un_zhp, 3772 node->un_mountp, flags) != 0) 3773 ret = 1; 3774 break; 3775 } 3776 3777 zfs_close(node->un_zhp); 3778 free(node->un_mountp); 3779 free(node); 3780 } 3781 3782 uu_avl_walk_end(walk); 3783 uu_avl_destroy(tree); 3784 uu_avl_pool_destroy(pool); 3785 3786 if (op == OP_SHARE) { 3787 /* 3788 * Finally, unshare any volumes shared via iSCSI. 3789 */ 3790 zfs_handle_t **dslist = NULL; 3791 size_t i, count = 0; 3792 3793 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count, 3794 B_FALSE); 3795 3796 if (count != 0) { 3797 qsort(dslist, count, sizeof (void *), 3798 dataset_cmp); 3799 3800 for (i = 0; i < count; i++) { 3801 if (zfs_unshare_iscsi(dslist[i]) != 0) 3802 ret = 1; 3803 zfs_close(dslist[i]); 3804 } 3805 3806 free(dslist); 3807 } 3808 } 3809 } else { 3810 if (argc != 1) { 3811 if (argc == 0) 3812 (void) fprintf(stderr, 3813 gettext("missing filesystem argument\n")); 3814 else 3815 (void) fprintf(stderr, 3816 gettext("too many arguments\n")); 3817 usage(B_FALSE); 3818 } 3819 3820 /* 3821 * We have an argument, but it may be a full path or a ZFS 3822 * filesystem. Pass full paths off to unmount_path() (shared by 3823 * manual_unmount), otherwise open the filesystem and pass to 3824 * zfs_unmount(). 3825 */ 3826 if (argv[0][0] == '/') 3827 return (unshare_unmount_path(op, argv[0], 3828 flags, B_FALSE)); 3829 3830 types = ZFS_TYPE_FILESYSTEM; 3831 if (op == OP_SHARE) 3832 types |= ZFS_TYPE_VOLUME; 3833 3834 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) 3835 return (1); 3836 3837 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 3838 verify(zfs_prop_get(zhp, op == OP_SHARE ? 3839 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, 3840 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL, 3841 NULL, 0, B_FALSE) == 0); 3842 3843 switch (op) { 3844 case OP_SHARE: 3845 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3846 nfsiscsi_mnt_prop, 3847 sizeof (nfsiscsi_mnt_prop), 3848 NULL, NULL, 0, B_FALSE) == 0); 3849 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3850 sharesmb, sizeof (sharesmb), NULL, NULL, 3851 0, B_FALSE) == 0); 3852 3853 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 && 3854 strcmp(sharesmb, "off") == 0) { 3855 (void) fprintf(stderr, gettext("cannot " 3856 "unshare '%s': legacy share\n"), 3857 zfs_get_name(zhp)); 3858 (void) fprintf(stderr, gettext("use " 3859 "unshare(1M) to unshare this " 3860 "filesystem\n")); 3861 ret = 1; 3862 } else if (!zfs_is_shared(zhp)) { 3863 (void) fprintf(stderr, gettext("cannot " 3864 "unshare '%s': not currently " 3865 "shared\n"), zfs_get_name(zhp)); 3866 ret = 1; 3867 } else if (zfs_unshareall(zhp) != 0) { 3868 ret = 1; 3869 } 3870 break; 3871 3872 case OP_MOUNT: 3873 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) { 3874 (void) fprintf(stderr, gettext("cannot " 3875 "unmount '%s': legacy " 3876 "mountpoint\n"), zfs_get_name(zhp)); 3877 (void) fprintf(stderr, gettext("use " 3878 "umount(1M) to unmount this " 3879 "filesystem\n")); 3880 ret = 1; 3881 } else if (!zfs_is_mounted(zhp, NULL)) { 3882 (void) fprintf(stderr, gettext("cannot " 3883 "unmount '%s': not currently " 3884 "mounted\n"), 3885 zfs_get_name(zhp)); 3886 ret = 1; 3887 } else if (zfs_unmountall(zhp, flags) != 0) { 3888 ret = 1; 3889 } 3890 break; 3891 } 3892 } else { 3893 assert(op == OP_SHARE); 3894 3895 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, 3896 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), 3897 NULL, NULL, 0, B_FALSE) == 0); 3898 3899 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) { 3900 (void) fprintf(stderr, gettext("cannot unshare " 3901 "'%s': 'shareiscsi' property not set\n"), 3902 zfs_get_name(zhp)); 3903 (void) fprintf(stderr, gettext("set " 3904 "'shareiscsi' property or use " 3905 "iscsitadm(1M) to share this volume\n")); 3906 ret = 1; 3907 } else if (!zfs_is_shared_iscsi(zhp)) { 3908 (void) fprintf(stderr, gettext("cannot " 3909 "unshare '%s': not currently shared\n"), 3910 zfs_get_name(zhp)); 3911 ret = 1; 3912 } else if (zfs_unshare_iscsi(zhp) != 0) { 3913 ret = 1; 3914 } 3915 } 3916 3917 zfs_close(zhp); 3918 } 3919 3920 return (ret); 3921 } 3922 3923 /* 3924 * zfs unmount -a 3925 * zfs unmount filesystem 3926 * 3927 * Unmount all filesystems, or a specific ZFS filesystem. 3928 */ 3929 static int 3930 zfs_do_unmount(int argc, char **argv) 3931 { 3932 return (unshare_unmount(OP_MOUNT, argc, argv)); 3933 } 3934 3935 /* 3936 * zfs unshare -a 3937 * zfs unshare filesystem 3938 * 3939 * Unshare all filesystems, or a specific ZFS filesystem. 3940 */ 3941 static int 3942 zfs_do_unshare(int argc, char **argv) 3943 { 3944 return (unshare_unmount(OP_SHARE, argc, argv)); 3945 } 3946 3947 /* 3948 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is 3949 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'. 3950 */ 3951 static int 3952 manual_mount(int argc, char **argv) 3953 { 3954 zfs_handle_t *zhp; 3955 char mountpoint[ZFS_MAXPROPLEN]; 3956 char mntopts[MNT_LINE_MAX] = { '\0' }; 3957 int ret; 3958 int c; 3959 int flags = 0; 3960 char *dataset, *path; 3961 3962 /* check options */ 3963 while ((c = getopt(argc, argv, ":mo:O")) != -1) { 3964 switch (c) { 3965 case 'o': 3966 (void) strlcpy(mntopts, optarg, sizeof (mntopts)); 3967 break; 3968 case 'O': 3969 flags |= MS_OVERLAY; 3970 break; 3971 case 'm': 3972 flags |= MS_NOMNTTAB; 3973 break; 3974 case ':': 3975 (void) fprintf(stderr, gettext("missing argument for " 3976 "'%c' option\n"), optopt); 3977 usage(B_FALSE); 3978 break; 3979 case '?': 3980 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3981 optopt); 3982 (void) fprintf(stderr, gettext("usage: mount [-o opts] " 3983 "<path>\n")); 3984 return (2); 3985 } 3986 } 3987 3988 argc -= optind; 3989 argv += optind; 3990 3991 /* check that we only have two arguments */ 3992 if (argc != 2) { 3993 if (argc == 0) 3994 (void) fprintf(stderr, gettext("missing dataset " 3995 "argument\n")); 3996 else if (argc == 1) 3997 (void) fprintf(stderr, 3998 gettext("missing mountpoint argument\n")); 3999 else 4000 (void) fprintf(stderr, gettext("too many arguments\n")); 4001 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n"); 4002 return (2); 4003 } 4004 4005 dataset = argv[0]; 4006 path = argv[1]; 4007 4008 /* try to open the dataset */ 4009 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL) 4010 return (1); 4011 4012 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 4013 sizeof (mountpoint), NULL, NULL, 0, B_FALSE); 4014 4015 /* check for legacy mountpoint and complain appropriately */ 4016 ret = 0; 4017 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) { 4018 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS, 4019 NULL, 0, mntopts, sizeof (mntopts)) != 0) { 4020 (void) fprintf(stderr, gettext("mount failed: %s\n"), 4021 strerror(errno)); 4022 ret = 1; 4023 } 4024 } else { 4025 (void) fprintf(stderr, gettext("filesystem '%s' cannot be " 4026 "mounted using 'mount -F zfs'\n"), dataset); 4027 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' " 4028 "instead.\n"), path); 4029 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' " 4030 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n")); 4031 (void) fprintf(stderr, gettext("See zfs(1M) for more " 4032 "information.\n")); 4033 ret = 1; 4034 } 4035 4036 return (ret); 4037 } 4038 4039 /* 4040 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow 4041 * unmounts of non-legacy filesystems, as this is the dominant administrative 4042 * interface. 4043 */ 4044 static int 4045 manual_unmount(int argc, char **argv) 4046 { 4047 int flags = 0; 4048 int c; 4049 4050 /* check options */ 4051 while ((c = getopt(argc, argv, "f")) != -1) { 4052 switch (c) { 4053 case 'f': 4054 flags = MS_FORCE; 4055 break; 4056 case '?': 4057 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 4058 optopt); 4059 (void) fprintf(stderr, gettext("usage: unmount [-f] " 4060 "<path>\n")); 4061 return (2); 4062 } 4063 } 4064 4065 argc -= optind; 4066 argv += optind; 4067 4068 /* check arguments */ 4069 if (argc != 1) { 4070 if (argc == 0) 4071 (void) fprintf(stderr, gettext("missing path " 4072 "argument\n")); 4073 else 4074 (void) fprintf(stderr, gettext("too many arguments\n")); 4075 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n")); 4076 return (2); 4077 } 4078 4079 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE)); 4080 } 4081 4082 static int 4083 volcheck(zpool_handle_t *zhp, void *data) 4084 { 4085 boolean_t isinit = *((boolean_t *)data); 4086 4087 if (isinit) 4088 return (zpool_create_zvol_links(zhp)); 4089 else 4090 return (zpool_remove_zvol_links(zhp)); 4091 } 4092 4093 /* 4094 * Iterate over all pools in the system and either create or destroy /dev/zvol 4095 * links, depending on the value of 'isinit'. 4096 */ 4097 static int 4098 do_volcheck(boolean_t isinit) 4099 { 4100 return (zpool_iter(g_zfs, volcheck, &isinit) ? 1 : 0); 4101 } 4102 4103 static int 4104 find_command_idx(char *command, int *idx) 4105 { 4106 int i; 4107 4108 for (i = 0; i < NCOMMAND; i++) { 4109 if (command_table[i].name == NULL) 4110 continue; 4111 4112 if (strcmp(command, command_table[i].name) == 0) { 4113 *idx = i; 4114 return (0); 4115 } 4116 } 4117 return (1); 4118 } 4119 4120 int 4121 main(int argc, char **argv) 4122 { 4123 int ret; 4124 int i; 4125 char *progname; 4126 char *cmdname; 4127 4128 (void) setlocale(LC_ALL, ""); 4129 (void) textdomain(TEXT_DOMAIN); 4130 4131 opterr = 0; 4132 4133 if ((g_zfs = libzfs_init()) == NULL) { 4134 (void) fprintf(stderr, gettext("internal error: failed to " 4135 "initialize ZFS library\n")); 4136 return (1); 4137 } 4138 4139 zpool_set_history_str("zfs", argc, argv, history_str); 4140 verify(zpool_stage_history(g_zfs, history_str) == 0); 4141 4142 libzfs_print_on_error(g_zfs, B_TRUE); 4143 4144 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) { 4145 (void) fprintf(stderr, gettext("internal error: unable to " 4146 "open %s\n"), MNTTAB); 4147 return (1); 4148 } 4149 4150 /* 4151 * This command also doubles as the /etc/fs mount and unmount program. 4152 * Determine if we should take this behavior based on argv[0]. 4153 */ 4154 progname = basename(argv[0]); 4155 if (strcmp(progname, "mount") == 0) { 4156 ret = manual_mount(argc, argv); 4157 } else if (strcmp(progname, "umount") == 0) { 4158 ret = manual_unmount(argc, argv); 4159 } else { 4160 /* 4161 * Make sure the user has specified some command. 4162 */ 4163 if (argc < 2) { 4164 (void) fprintf(stderr, gettext("missing command\n")); 4165 usage(B_FALSE); 4166 } 4167 4168 cmdname = argv[1]; 4169 4170 /* 4171 * The 'umount' command is an alias for 'unmount' 4172 */ 4173 if (strcmp(cmdname, "umount") == 0) 4174 cmdname = "unmount"; 4175 4176 /* 4177 * The 'recv' command is an alias for 'receive' 4178 */ 4179 if (strcmp(cmdname, "recv") == 0) 4180 cmdname = "receive"; 4181 4182 /* 4183 * Special case '-?' 4184 */ 4185 if (strcmp(cmdname, "-?") == 0) 4186 usage(B_TRUE); 4187 4188 /* 4189 * 'volinit' and 'volfini' do not appear in the usage message, 4190 * so we have to special case them here. 4191 */ 4192 if (strcmp(cmdname, "volinit") == 0) 4193 return (do_volcheck(B_TRUE)); 4194 else if (strcmp(cmdname, "volfini") == 0) 4195 return (do_volcheck(B_FALSE)); 4196 4197 /* 4198 * Run the appropriate command. 4199 */ 4200 libzfs_mnttab_cache(g_zfs, B_TRUE); 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 libzfs_mnttab_cache(g_zfs, B_FALSE); 4214 } 4215 4216 (void) fclose(mnttab_file); 4217 4218 libzfs_fini(g_zfs); 4219 4220 /* 4221 * The 'ZFS_ABORT' environment variable causes us to dump core on exit 4222 * for the purposes of running ::findleaks. 4223 */ 4224 if (getenv("ZFS_ABORT") != NULL) { 4225 (void) printf("dumping core by request\n"); 4226 abort(); 4227 } 4228 4229 return (ret); 4230 } 4231