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] [-d max] " 188 "[-o field[,...]] [-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][-d max] " 199 "[-o property[,...]] [-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 static int 419 parse_depth(char *opt, int *flags) 420 { 421 char *tmp; 422 int depth; 423 424 depth = (int)strtol(opt, &tmp, 0); 425 if (*tmp) { 426 (void) fprintf(stderr, 427 gettext("%s is not an integer\n"), optarg); 428 usage(B_FALSE); 429 } 430 if (depth < 0) { 431 (void) fprintf(stderr, 432 gettext("Depth can not be negative.\n")); 433 usage(B_FALSE); 434 } 435 *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE); 436 return (depth); 437 } 438 439 /* 440 * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol> 441 * 442 * Given an existing dataset, create a writable copy whose initial contents 443 * are the same as the source. The newly created dataset maintains a 444 * dependency on the original; the original cannot be destroyed so long as 445 * the clone exists. 446 * 447 * The '-p' flag creates all the non-existing ancestors of the target first. 448 */ 449 static int 450 zfs_do_clone(int argc, char **argv) 451 { 452 zfs_handle_t *zhp = NULL; 453 boolean_t parents = B_FALSE; 454 nvlist_t *props; 455 int ret; 456 int c; 457 458 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 459 (void) fprintf(stderr, gettext("internal error: " 460 "out of memory\n")); 461 return (1); 462 } 463 464 /* check options */ 465 while ((c = getopt(argc, argv, "o:p")) != -1) { 466 switch (c) { 467 case 'o': 468 if (parseprop(props)) 469 return (1); 470 break; 471 case 'p': 472 parents = B_TRUE; 473 break; 474 case '?': 475 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 476 optopt); 477 goto usage; 478 } 479 } 480 481 argc -= optind; 482 argv += optind; 483 484 /* check number of arguments */ 485 if (argc < 1) { 486 (void) fprintf(stderr, gettext("missing source dataset " 487 "argument\n")); 488 goto usage; 489 } 490 if (argc < 2) { 491 (void) fprintf(stderr, gettext("missing target dataset " 492 "argument\n")); 493 goto usage; 494 } 495 if (argc > 2) { 496 (void) fprintf(stderr, gettext("too many arguments\n")); 497 goto usage; 498 } 499 500 /* open the source dataset */ 501 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 502 return (1); 503 504 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM | 505 ZFS_TYPE_VOLUME)) { 506 /* 507 * Now create the ancestors of the target dataset. If the 508 * target already exists and '-p' option was used we should not 509 * complain. 510 */ 511 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | 512 ZFS_TYPE_VOLUME)) 513 return (0); 514 if (zfs_create_ancestors(g_zfs, argv[1]) != 0) 515 return (1); 516 } 517 518 /* pass to libzfs */ 519 ret = zfs_clone(zhp, argv[1], props); 520 521 /* create the mountpoint if necessary */ 522 if (ret == 0) { 523 zfs_handle_t *clone; 524 525 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET); 526 if (clone != NULL) { 527 if ((ret = zfs_mount(clone, NULL, 0)) == 0) 528 ret = zfs_share(clone); 529 zfs_close(clone); 530 } 531 } 532 533 zfs_close(zhp); 534 nvlist_free(props); 535 536 return (!!ret); 537 538 usage: 539 if (zhp) 540 zfs_close(zhp); 541 nvlist_free(props); 542 usage(B_FALSE); 543 return (-1); 544 } 545 546 /* 547 * zfs create [-p] [-o prop=value] ... fs 548 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size 549 * 550 * Create a new dataset. This command can be used to create filesystems 551 * and volumes. Snapshot creation is handled by 'zfs snapshot'. 552 * For volumes, the user must specify a size to be used. 553 * 554 * The '-s' flag applies only to volumes, and indicates that we should not try 555 * to set the reservation for this volume. By default we set a reservation 556 * equal to the size for any volume. For pools with SPA_VERSION >= 557 * SPA_VERSION_REFRESERVATION, we set a refreservation instead. 558 * 559 * The '-p' flag creates all the non-existing ancestors of the target first. 560 */ 561 static int 562 zfs_do_create(int argc, char **argv) 563 { 564 zfs_type_t type = ZFS_TYPE_FILESYSTEM; 565 zfs_handle_t *zhp = NULL; 566 uint64_t volsize; 567 int c; 568 boolean_t noreserve = B_FALSE; 569 boolean_t bflag = B_FALSE; 570 boolean_t parents = B_FALSE; 571 int ret = 1; 572 nvlist_t *props; 573 uint64_t intval; 574 int canmount; 575 576 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 577 (void) fprintf(stderr, gettext("internal error: " 578 "out of memory\n")); 579 return (1); 580 } 581 582 /* check options */ 583 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) { 584 switch (c) { 585 case 'V': 586 type = ZFS_TYPE_VOLUME; 587 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 588 (void) fprintf(stderr, gettext("bad volume " 589 "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_VOLSIZE), 596 intval) != 0) { 597 (void) fprintf(stderr, gettext("internal " 598 "error: out of memory\n")); 599 goto error; 600 } 601 volsize = intval; 602 break; 603 case 'p': 604 parents = B_TRUE; 605 break; 606 case 'b': 607 bflag = B_TRUE; 608 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 609 (void) fprintf(stderr, gettext("bad volume " 610 "block size '%s': %s\n"), optarg, 611 libzfs_error_description(g_zfs)); 612 goto error; 613 } 614 615 if (nvlist_add_uint64(props, 616 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 617 intval) != 0) { 618 (void) fprintf(stderr, gettext("internal " 619 "error: out of memory\n")); 620 goto error; 621 } 622 break; 623 case 'o': 624 if (parseprop(props)) 625 goto error; 626 break; 627 case 's': 628 noreserve = B_TRUE; 629 break; 630 case ':': 631 (void) fprintf(stderr, gettext("missing size " 632 "argument\n")); 633 goto badusage; 634 break; 635 case '?': 636 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 637 optopt); 638 goto badusage; 639 } 640 } 641 642 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) { 643 (void) fprintf(stderr, gettext("'-s' and '-b' can only be " 644 "used when creating a volume\n")); 645 goto badusage; 646 } 647 648 argc -= optind; 649 argv += optind; 650 651 /* check number of arguments */ 652 if (argc == 0) { 653 (void) fprintf(stderr, gettext("missing %s argument\n"), 654 zfs_type_to_name(type)); 655 goto badusage; 656 } 657 if (argc > 1) { 658 (void) fprintf(stderr, gettext("too many arguments\n")); 659 goto badusage; 660 } 661 662 if (type == ZFS_TYPE_VOLUME && !noreserve) { 663 zpool_handle_t *zpool_handle; 664 uint64_t spa_version; 665 char *p; 666 zfs_prop_t resv_prop; 667 char *strval; 668 669 if (p = strchr(argv[0], '/')) 670 *p = '\0'; 671 zpool_handle = zpool_open(g_zfs, argv[0]); 672 if (p != NULL) 673 *p = '/'; 674 if (zpool_handle == NULL) 675 goto error; 676 spa_version = zpool_get_prop_int(zpool_handle, 677 ZPOOL_PROP_VERSION, NULL); 678 zpool_close(zpool_handle); 679 if (spa_version >= SPA_VERSION_REFRESERVATION) 680 resv_prop = ZFS_PROP_REFRESERVATION; 681 else 682 resv_prop = ZFS_PROP_RESERVATION; 683 684 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop), 685 &strval) != 0) { 686 if (nvlist_add_uint64(props, 687 zfs_prop_to_name(resv_prop), volsize) != 0) { 688 (void) fprintf(stderr, gettext("internal " 689 "error: out of memory\n")); 690 nvlist_free(props); 691 return (1); 692 } 693 } 694 } 695 696 if (parents && zfs_name_valid(argv[0], type)) { 697 /* 698 * Now create the ancestors of target dataset. If the target 699 * already exists and '-p' option was used we should not 700 * complain. 701 */ 702 if (zfs_dataset_exists(g_zfs, argv[0], type)) { 703 ret = 0; 704 goto error; 705 } 706 if (zfs_create_ancestors(g_zfs, argv[0]) != 0) 707 goto error; 708 } 709 710 /* pass to libzfs */ 711 if (zfs_create(g_zfs, argv[0], type, props) != 0) 712 goto error; 713 714 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 715 goto error; 716 /* 717 * if the user doesn't want the dataset automatically mounted, 718 * then skip the mount/share step 719 */ 720 721 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 722 723 /* 724 * Mount and/or share the new filesystem as appropriate. We provide a 725 * verbose error message to let the user know that their filesystem was 726 * in fact created, even if we failed to mount or share it. 727 */ 728 ret = 0; 729 if (canmount == ZFS_CANMOUNT_ON) { 730 if (zfs_mount(zhp, NULL, 0) != 0) { 731 (void) fprintf(stderr, gettext("filesystem " 732 "successfully created, but not mounted\n")); 733 ret = 1; 734 } else if (zfs_share(zhp) != 0) { 735 (void) fprintf(stderr, gettext("filesystem " 736 "successfully created, but not shared\n")); 737 ret = 1; 738 } 739 } 740 741 error: 742 if (zhp) 743 zfs_close(zhp); 744 nvlist_free(props); 745 return (ret); 746 badusage: 747 nvlist_free(props); 748 usage(B_FALSE); 749 return (2); 750 } 751 752 /* 753 * zfs destroy [-rf] <fs, snap, vol> 754 * 755 * -r Recursively destroy all children 756 * -R Recursively destroy all dependents, including clones 757 * -f Force unmounting of any dependents 758 * 759 * Destroys the given dataset. By default, it will unmount any filesystems, 760 * and refuse to destroy a dataset that has any dependents. A dependent can 761 * either be a child, or a clone of a child. 762 */ 763 typedef struct destroy_cbdata { 764 boolean_t cb_first; 765 int cb_force; 766 int cb_recurse; 767 int cb_error; 768 int cb_needforce; 769 int cb_doclones; 770 boolean_t cb_closezhp; 771 zfs_handle_t *cb_target; 772 char *cb_snapname; 773 } destroy_cbdata_t; 774 775 /* 776 * Check for any dependents based on the '-r' or '-R' flags. 777 */ 778 static int 779 destroy_check_dependent(zfs_handle_t *zhp, void *data) 780 { 781 destroy_cbdata_t *cbp = data; 782 const char *tname = zfs_get_name(cbp->cb_target); 783 const char *name = zfs_get_name(zhp); 784 785 if (strncmp(tname, name, strlen(tname)) == 0 && 786 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) { 787 /* 788 * This is a direct descendant, not a clone somewhere else in 789 * the hierarchy. 790 */ 791 if (cbp->cb_recurse) 792 goto out; 793 794 if (cbp->cb_first) { 795 (void) fprintf(stderr, gettext("cannot destroy '%s': " 796 "%s has children\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 } else { 807 /* 808 * This is a clone. We only want to report this if the '-r' 809 * wasn't specified, or the target is a snapshot. 810 */ 811 if (!cbp->cb_recurse && 812 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT) 813 goto out; 814 815 if (cbp->cb_first) { 816 (void) fprintf(stderr, gettext("cannot destroy '%s': " 817 "%s has dependent clones\n"), 818 zfs_get_name(cbp->cb_target), 819 zfs_type_to_name(zfs_get_type(cbp->cb_target))); 820 (void) fprintf(stderr, gettext("use '-R' to destroy " 821 "the following datasets:\n")); 822 cbp->cb_first = B_FALSE; 823 cbp->cb_error = 1; 824 } 825 826 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 827 } 828 829 out: 830 zfs_close(zhp); 831 return (0); 832 } 833 834 static int 835 destroy_callback(zfs_handle_t *zhp, void *data) 836 { 837 destroy_cbdata_t *cbp = data; 838 839 /* 840 * Ignore pools (which we've already flagged as an error before getting 841 * here. 842 */ 843 if (strchr(zfs_get_name(zhp), '/') == NULL && 844 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 845 zfs_close(zhp); 846 return (0); 847 } 848 849 /* 850 * Bail out on the first error. 851 */ 852 if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 || 853 zfs_destroy(zhp) != 0) { 854 zfs_close(zhp); 855 return (-1); 856 } 857 858 zfs_close(zhp); 859 return (0); 860 } 861 862 static int 863 destroy_snap_clones(zfs_handle_t *zhp, void *arg) 864 { 865 destroy_cbdata_t *cbp = arg; 866 char thissnap[MAXPATHLEN]; 867 zfs_handle_t *szhp; 868 boolean_t closezhp = cbp->cb_closezhp; 869 int rv; 870 871 (void) snprintf(thissnap, sizeof (thissnap), 872 "%s@%s", zfs_get_name(zhp), cbp->cb_snapname); 873 874 libzfs_print_on_error(g_zfs, B_FALSE); 875 szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT); 876 libzfs_print_on_error(g_zfs, B_TRUE); 877 if (szhp) { 878 /* 879 * Destroy any clones of this snapshot 880 */ 881 if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback, 882 cbp) != 0) { 883 zfs_close(szhp); 884 if (closezhp) 885 zfs_close(zhp); 886 return (-1); 887 } 888 zfs_close(szhp); 889 } 890 891 cbp->cb_closezhp = B_TRUE; 892 rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg); 893 if (closezhp) 894 zfs_close(zhp); 895 return (rv); 896 } 897 898 static int 899 zfs_do_destroy(int argc, char **argv) 900 { 901 destroy_cbdata_t cb = { 0 }; 902 int c; 903 zfs_handle_t *zhp; 904 char *cp; 905 906 /* check options */ 907 while ((c = getopt(argc, argv, "frR")) != -1) { 908 switch (c) { 909 case 'f': 910 cb.cb_force = 1; 911 break; 912 case 'r': 913 cb.cb_recurse = 1; 914 break; 915 case 'R': 916 cb.cb_recurse = 1; 917 cb.cb_doclones = 1; 918 break; 919 case '?': 920 default: 921 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 922 optopt); 923 usage(B_FALSE); 924 } 925 } 926 927 argc -= optind; 928 argv += optind; 929 930 /* check number of arguments */ 931 if (argc == 0) { 932 (void) fprintf(stderr, gettext("missing path argument\n")); 933 usage(B_FALSE); 934 } 935 if (argc > 1) { 936 (void) fprintf(stderr, gettext("too many arguments\n")); 937 usage(B_FALSE); 938 } 939 940 /* 941 * If we are doing recursive destroy of a snapshot, then the 942 * named snapshot may not exist. Go straight to libzfs. 943 */ 944 if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) { 945 int ret; 946 947 *cp = '\0'; 948 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 949 return (1); 950 *cp = '@'; 951 cp++; 952 953 if (cb.cb_doclones) { 954 cb.cb_snapname = cp; 955 if (destroy_snap_clones(zhp, &cb) != 0) { 956 zfs_close(zhp); 957 return (1); 958 } 959 } 960 961 ret = zfs_destroy_snaps(zhp, cp); 962 zfs_close(zhp); 963 if (ret) { 964 (void) fprintf(stderr, 965 gettext("no snapshots destroyed\n")); 966 } 967 return (ret != 0); 968 } 969 970 971 /* Open the given dataset */ 972 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 973 return (1); 974 975 cb.cb_target = zhp; 976 977 /* 978 * Perform an explicit check for pools before going any further. 979 */ 980 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL && 981 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 982 (void) fprintf(stderr, gettext("cannot destroy '%s': " 983 "operation does not apply to pools\n"), 984 zfs_get_name(zhp)); 985 (void) fprintf(stderr, gettext("use 'zfs destroy -r " 986 "%s' to destroy all datasets in the pool\n"), 987 zfs_get_name(zhp)); 988 (void) fprintf(stderr, gettext("use 'zpool destroy %s' " 989 "to destroy the pool itself\n"), zfs_get_name(zhp)); 990 zfs_close(zhp); 991 return (1); 992 } 993 994 /* 995 * Check for any dependents and/or clones. 996 */ 997 cb.cb_first = B_TRUE; 998 if (!cb.cb_doclones && 999 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent, 1000 &cb) != 0) { 1001 zfs_close(zhp); 1002 return (1); 1003 } 1004 1005 if (cb.cb_error || 1006 zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0) { 1007 zfs_close(zhp); 1008 return (1); 1009 } 1010 1011 /* 1012 * Do the real thing. The callback will close the handle regardless of 1013 * whether it succeeds or not. 1014 */ 1015 1016 if (destroy_callback(zhp, &cb) != 0) 1017 return (1); 1018 1019 1020 return (0); 1021 } 1022 1023 /* 1024 * zfs get [-rHp] [-o field[,field]...] [-s source[,source]...] 1025 * < all | property[,property]... > < fs | snap | vol > ... 1026 * 1027 * -r recurse over any child datasets 1028 * -H scripted mode. Headers are stripped, and fields are separated 1029 * by tabs instead of spaces. 1030 * -o Set of fields to display. One of "name,property,value,source". 1031 * Default is all four. 1032 * -s Set of sources to allow. One of 1033 * "local,default,inherited,temporary,none". Default is all 1034 * five. 1035 * -p Display values in parsable (literal) format. 1036 * 1037 * Prints properties for the given datasets. The user can control which 1038 * columns to display as well as which property types to allow. 1039 */ 1040 1041 /* 1042 * Invoked to display the properties for a single dataset. 1043 */ 1044 static int 1045 get_callback(zfs_handle_t *zhp, void *data) 1046 { 1047 char buf[ZFS_MAXPROPLEN]; 1048 zprop_source_t sourcetype; 1049 char source[ZFS_MAXNAMELEN]; 1050 zprop_get_cbdata_t *cbp = data; 1051 nvlist_t *userprop = zfs_get_user_props(zhp); 1052 zprop_list_t *pl = cbp->cb_proplist; 1053 nvlist_t *propval; 1054 char *strval; 1055 char *sourceval; 1056 1057 for (; pl != NULL; pl = pl->pl_next) { 1058 /* 1059 * Skip the special fake placeholder. This will also skip over 1060 * the name property when 'all' is specified. 1061 */ 1062 if (pl->pl_prop == ZFS_PROP_NAME && 1063 pl == cbp->cb_proplist) 1064 continue; 1065 1066 if (pl->pl_prop != ZPROP_INVAL) { 1067 if (zfs_prop_get(zhp, pl->pl_prop, buf, 1068 sizeof (buf), &sourcetype, source, 1069 sizeof (source), 1070 cbp->cb_literal) != 0) { 1071 if (pl->pl_all) 1072 continue; 1073 if (!zfs_prop_valid_for_type(pl->pl_prop, 1074 ZFS_TYPE_DATASET)) { 1075 (void) fprintf(stderr, 1076 gettext("No such property '%s'\n"), 1077 zfs_prop_to_name(pl->pl_prop)); 1078 continue; 1079 } 1080 sourcetype = ZPROP_SRC_NONE; 1081 (void) strlcpy(buf, "-", sizeof (buf)); 1082 } 1083 1084 zprop_print_one_property(zfs_get_name(zhp), cbp, 1085 zfs_prop_to_name(pl->pl_prop), 1086 buf, sourcetype, source); 1087 } else { 1088 if (nvlist_lookup_nvlist(userprop, 1089 pl->pl_user_prop, &propval) != 0) { 1090 if (pl->pl_all) 1091 continue; 1092 sourcetype = ZPROP_SRC_NONE; 1093 strval = "-"; 1094 } else { 1095 verify(nvlist_lookup_string(propval, 1096 ZPROP_VALUE, &strval) == 0); 1097 verify(nvlist_lookup_string(propval, 1098 ZPROP_SOURCE, &sourceval) == 0); 1099 1100 if (strcmp(sourceval, 1101 zfs_get_name(zhp)) == 0) { 1102 sourcetype = ZPROP_SRC_LOCAL; 1103 } else { 1104 sourcetype = ZPROP_SRC_INHERITED; 1105 (void) strlcpy(source, 1106 sourceval, sizeof (source)); 1107 } 1108 } 1109 1110 zprop_print_one_property(zfs_get_name(zhp), cbp, 1111 pl->pl_user_prop, strval, sourcetype, 1112 source); 1113 } 1114 } 1115 1116 return (0); 1117 } 1118 1119 static int 1120 zfs_do_get(int argc, char **argv) 1121 { 1122 zprop_get_cbdata_t cb = { 0 }; 1123 int i, c, flags = 0; 1124 char *value, *fields; 1125 int ret; 1126 int limit = 0; 1127 zprop_list_t fake_name = { 0 }; 1128 1129 /* 1130 * Set up default columns and sources. 1131 */ 1132 cb.cb_sources = ZPROP_SRC_ALL; 1133 cb.cb_columns[0] = GET_COL_NAME; 1134 cb.cb_columns[1] = GET_COL_PROPERTY; 1135 cb.cb_columns[2] = GET_COL_VALUE; 1136 cb.cb_columns[3] = GET_COL_SOURCE; 1137 cb.cb_type = ZFS_TYPE_DATASET; 1138 1139 /* check options */ 1140 while ((c = getopt(argc, argv, ":d:o:s:rHp")) != -1) { 1141 switch (c) { 1142 case 'p': 1143 cb.cb_literal = B_TRUE; 1144 break; 1145 case 'd': 1146 limit = parse_depth(optarg, &flags); 1147 break; 1148 case 'r': 1149 flags |= ZFS_ITER_RECURSE; 1150 break; 1151 case 'H': 1152 cb.cb_scripted = B_TRUE; 1153 break; 1154 case ':': 1155 (void) fprintf(stderr, gettext("missing argument for " 1156 "'%c' option\n"), optopt); 1157 usage(B_FALSE); 1158 break; 1159 case 'o': 1160 /* 1161 * Process the set of columns to display. We zero out 1162 * the structure to give us a blank slate. 1163 */ 1164 bzero(&cb.cb_columns, sizeof (cb.cb_columns)); 1165 i = 0; 1166 while (*optarg != '\0') { 1167 static char *col_subopts[] = 1168 { "name", "property", "value", "source", 1169 NULL }; 1170 1171 if (i == 4) { 1172 (void) fprintf(stderr, gettext("too " 1173 "many fields given to -o " 1174 "option\n")); 1175 usage(B_FALSE); 1176 } 1177 1178 switch (getsubopt(&optarg, col_subopts, 1179 &value)) { 1180 case 0: 1181 cb.cb_columns[i++] = GET_COL_NAME; 1182 break; 1183 case 1: 1184 cb.cb_columns[i++] = GET_COL_PROPERTY; 1185 break; 1186 case 2: 1187 cb.cb_columns[i++] = GET_COL_VALUE; 1188 break; 1189 case 3: 1190 cb.cb_columns[i++] = GET_COL_SOURCE; 1191 break; 1192 default: 1193 (void) fprintf(stderr, 1194 gettext("invalid column name " 1195 "'%s'\n"), value); 1196 usage(B_FALSE); 1197 } 1198 } 1199 break; 1200 1201 case 's': 1202 cb.cb_sources = 0; 1203 while (*optarg != '\0') { 1204 static char *source_subopts[] = { 1205 "local", "default", "inherited", 1206 "temporary", "none", NULL }; 1207 1208 switch (getsubopt(&optarg, source_subopts, 1209 &value)) { 1210 case 0: 1211 cb.cb_sources |= ZPROP_SRC_LOCAL; 1212 break; 1213 case 1: 1214 cb.cb_sources |= ZPROP_SRC_DEFAULT; 1215 break; 1216 case 2: 1217 cb.cb_sources |= ZPROP_SRC_INHERITED; 1218 break; 1219 case 3: 1220 cb.cb_sources |= ZPROP_SRC_TEMPORARY; 1221 break; 1222 case 4: 1223 cb.cb_sources |= ZPROP_SRC_NONE; 1224 break; 1225 default: 1226 (void) fprintf(stderr, 1227 gettext("invalid source " 1228 "'%s'\n"), value); 1229 usage(B_FALSE); 1230 } 1231 } 1232 break; 1233 1234 case '?': 1235 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1236 optopt); 1237 usage(B_FALSE); 1238 } 1239 } 1240 1241 argc -= optind; 1242 argv += optind; 1243 1244 if (argc < 1) { 1245 (void) fprintf(stderr, gettext("missing property " 1246 "argument\n")); 1247 usage(B_FALSE); 1248 } 1249 1250 fields = argv[0]; 1251 1252 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1253 != 0) 1254 usage(B_FALSE); 1255 1256 argc--; 1257 argv++; 1258 1259 /* 1260 * As part of zfs_expand_proplist(), we keep track of the maximum column 1261 * width for each property. For the 'NAME' (and 'SOURCE') columns, we 1262 * need to know the maximum name length. However, the user likely did 1263 * not specify 'name' as one of the properties to fetch, so we need to 1264 * make sure we always include at least this property for 1265 * print_get_headers() to work properly. 1266 */ 1267 if (cb.cb_proplist != NULL) { 1268 fake_name.pl_prop = ZFS_PROP_NAME; 1269 fake_name.pl_width = strlen(gettext("NAME")); 1270 fake_name.pl_next = cb.cb_proplist; 1271 cb.cb_proplist = &fake_name; 1272 } 1273 1274 cb.cb_first = B_TRUE; 1275 1276 /* run for each object */ 1277 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, NULL, 1278 &cb.cb_proplist, limit, get_callback, &cb); 1279 1280 if (cb.cb_proplist == &fake_name) 1281 zprop_free_list(fake_name.pl_next); 1282 else 1283 zprop_free_list(cb.cb_proplist); 1284 1285 return (ret); 1286 } 1287 1288 /* 1289 * inherit [-r] <property> <fs|vol> ... 1290 * 1291 * -r Recurse over all children 1292 * 1293 * For each dataset specified on the command line, inherit the given property 1294 * from its parent. Inheriting a property at the pool level will cause it to 1295 * use the default value. The '-r' flag will recurse over all children, and is 1296 * useful for setting a property on a hierarchy-wide basis, regardless of any 1297 * local modifications for each dataset. 1298 */ 1299 1300 static int 1301 inherit_recurse_cb(zfs_handle_t *zhp, void *data) 1302 { 1303 char *propname = data; 1304 zfs_prop_t prop = zfs_name_to_prop(propname); 1305 1306 /* 1307 * If we're doing it recursively, then ignore properties that 1308 * are not valid for this type of dataset. 1309 */ 1310 if (prop != ZPROP_INVAL && 1311 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp))) 1312 return (0); 1313 1314 return (zfs_prop_inherit(zhp, propname) != 0); 1315 } 1316 1317 static int 1318 inherit_cb(zfs_handle_t *zhp, void *data) 1319 { 1320 char *propname = data; 1321 1322 return (zfs_prop_inherit(zhp, propname) != 0); 1323 } 1324 1325 static int 1326 zfs_do_inherit(int argc, char **argv) 1327 { 1328 int c; 1329 zfs_prop_t prop; 1330 char *propname; 1331 int ret; 1332 int flags = 0; 1333 1334 /* check options */ 1335 while ((c = getopt(argc, argv, "r")) != -1) { 1336 switch (c) { 1337 case 'r': 1338 flags |= ZFS_ITER_RECURSE; 1339 break; 1340 case '?': 1341 default: 1342 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1343 optopt); 1344 usage(B_FALSE); 1345 } 1346 } 1347 1348 argc -= optind; 1349 argv += optind; 1350 1351 /* check number of arguments */ 1352 if (argc < 1) { 1353 (void) fprintf(stderr, gettext("missing property argument\n")); 1354 usage(B_FALSE); 1355 } 1356 if (argc < 2) { 1357 (void) fprintf(stderr, gettext("missing dataset argument\n")); 1358 usage(B_FALSE); 1359 } 1360 1361 propname = argv[0]; 1362 argc--; 1363 argv++; 1364 1365 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) { 1366 if (zfs_prop_readonly(prop)) { 1367 (void) fprintf(stderr, gettext( 1368 "%s property is read-only\n"), 1369 propname); 1370 return (1); 1371 } 1372 if (!zfs_prop_inheritable(prop)) { 1373 (void) fprintf(stderr, gettext("'%s' property cannot " 1374 "be inherited\n"), propname); 1375 if (prop == ZFS_PROP_QUOTA || 1376 prop == ZFS_PROP_RESERVATION || 1377 prop == ZFS_PROP_REFQUOTA || 1378 prop == ZFS_PROP_REFRESERVATION) 1379 (void) fprintf(stderr, gettext("use 'zfs set " 1380 "%s=none' to clear\n"), propname); 1381 return (1); 1382 } 1383 } else if (!zfs_prop_user(propname)) { 1384 (void) fprintf(stderr, gettext("invalid property '%s'\n"), 1385 propname); 1386 usage(B_FALSE); 1387 } 1388 1389 if (flags & ZFS_ITER_RECURSE) { 1390 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, 1391 NULL, NULL, 0, inherit_recurse_cb, propname); 1392 } else { 1393 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, 1394 NULL, NULL, 0, inherit_cb, propname); 1395 } 1396 1397 return (ret); 1398 } 1399 1400 typedef struct upgrade_cbdata { 1401 uint64_t cb_numupgraded; 1402 uint64_t cb_numsamegraded; 1403 uint64_t cb_numfailed; 1404 uint64_t cb_version; 1405 boolean_t cb_newer; 1406 boolean_t cb_foundone; 1407 char cb_lastfs[ZFS_MAXNAMELEN]; 1408 } upgrade_cbdata_t; 1409 1410 static int 1411 same_pool(zfs_handle_t *zhp, const char *name) 1412 { 1413 int len1 = strcspn(name, "/@"); 1414 const char *zhname = zfs_get_name(zhp); 1415 int len2 = strcspn(zhname, "/@"); 1416 1417 if (len1 != len2) 1418 return (B_FALSE); 1419 return (strncmp(name, zhname, len1) == 0); 1420 } 1421 1422 static int 1423 upgrade_list_callback(zfs_handle_t *zhp, void *data) 1424 { 1425 upgrade_cbdata_t *cb = data; 1426 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1427 1428 /* list if it's old/new */ 1429 if ((!cb->cb_newer && version < ZPL_VERSION) || 1430 (cb->cb_newer && version > ZPL_VERSION)) { 1431 char *str; 1432 if (cb->cb_newer) { 1433 str = gettext("The following filesystems are " 1434 "formatted using a newer software version and\n" 1435 "cannot be accessed on the current system.\n\n"); 1436 } else { 1437 str = gettext("The following filesystems are " 1438 "out of date, and can be upgraded. After being\n" 1439 "upgraded, these filesystems (and any 'zfs send' " 1440 "streams generated from\n" 1441 "subsequent snapshots) will no longer be " 1442 "accessible by older software versions.\n\n"); 1443 } 1444 1445 if (!cb->cb_foundone) { 1446 (void) puts(str); 1447 (void) printf(gettext("VER FILESYSTEM\n")); 1448 (void) printf(gettext("--- ------------\n")); 1449 cb->cb_foundone = B_TRUE; 1450 } 1451 1452 (void) printf("%2u %s\n", version, zfs_get_name(zhp)); 1453 } 1454 1455 return (0); 1456 } 1457 1458 static int 1459 upgrade_set_callback(zfs_handle_t *zhp, void *data) 1460 { 1461 upgrade_cbdata_t *cb = data; 1462 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1463 1464 if (cb->cb_version >= ZPL_VERSION_FUID) { 1465 int spa_version; 1466 1467 if (zfs_spa_version(zhp, &spa_version) < 0) 1468 return (-1); 1469 1470 if (spa_version < SPA_VERSION_FUID) { 1471 /* can't upgrade */ 1472 (void) printf(gettext("%s: can not be upgraded; " 1473 "the pool version needs to first be upgraded\nto " 1474 "version %d\n\n"), 1475 zfs_get_name(zhp), SPA_VERSION_FUID); 1476 cb->cb_numfailed++; 1477 return (0); 1478 } 1479 } 1480 1481 /* upgrade */ 1482 if (version < cb->cb_version) { 1483 char verstr[16]; 1484 (void) snprintf(verstr, sizeof (verstr), 1485 "%llu", cb->cb_version); 1486 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) { 1487 /* 1488 * If they did "zfs upgrade -a", then we could 1489 * be doing ioctls to different pools. We need 1490 * to log this history once to each pool. 1491 */ 1492 verify(zpool_stage_history(g_zfs, history_str) == 0); 1493 } 1494 if (zfs_prop_set(zhp, "version", verstr) == 0) 1495 cb->cb_numupgraded++; 1496 else 1497 cb->cb_numfailed++; 1498 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp)); 1499 } else if (version > cb->cb_version) { 1500 /* can't downgrade */ 1501 (void) printf(gettext("%s: can not be downgraded; " 1502 "it is already at version %u\n"), 1503 zfs_get_name(zhp), version); 1504 cb->cb_numfailed++; 1505 } else { 1506 cb->cb_numsamegraded++; 1507 } 1508 return (0); 1509 } 1510 1511 /* 1512 * zfs upgrade 1513 * zfs upgrade -v 1514 * zfs upgrade [-r] [-V <version>] <-a | filesystem> 1515 */ 1516 static int 1517 zfs_do_upgrade(int argc, char **argv) 1518 { 1519 boolean_t all = B_FALSE; 1520 boolean_t showversions = B_FALSE; 1521 int ret; 1522 upgrade_cbdata_t cb = { 0 }; 1523 char c; 1524 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS; 1525 1526 /* check options */ 1527 while ((c = getopt(argc, argv, "rvV:a")) != -1) { 1528 switch (c) { 1529 case 'r': 1530 flags |= ZFS_ITER_RECURSE; 1531 break; 1532 case 'v': 1533 showversions = B_TRUE; 1534 break; 1535 case 'V': 1536 if (zfs_prop_string_to_index(ZFS_PROP_VERSION, 1537 optarg, &cb.cb_version) != 0) { 1538 (void) fprintf(stderr, 1539 gettext("invalid version %s\n"), optarg); 1540 usage(B_FALSE); 1541 } 1542 break; 1543 case 'a': 1544 all = B_TRUE; 1545 break; 1546 case '?': 1547 default: 1548 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1549 optopt); 1550 usage(B_FALSE); 1551 } 1552 } 1553 1554 argc -= optind; 1555 argv += optind; 1556 1557 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version)) 1558 usage(B_FALSE); 1559 if (showversions && (flags & ZFS_ITER_RECURSE || all || 1560 cb.cb_version || argc)) 1561 usage(B_FALSE); 1562 if ((all || argc) && (showversions)) 1563 usage(B_FALSE); 1564 if (all && argc) 1565 usage(B_FALSE); 1566 1567 if (showversions) { 1568 /* Show info on available versions. */ 1569 (void) printf(gettext("The following filesystem versions are " 1570 "supported:\n\n")); 1571 (void) printf(gettext("VER DESCRIPTION\n")); 1572 (void) printf("--- -----------------------------------------" 1573 "---------------\n"); 1574 (void) printf(gettext(" 1 Initial ZFS filesystem version\n")); 1575 (void) printf(gettext(" 2 Enhanced directory entries\n")); 1576 (void) printf(gettext(" 3 Case insensitive and File system " 1577 "unique identifer (FUID)\n")); 1578 (void) printf(gettext("\nFor more information on a particular " 1579 "version, including supported releases, see:\n\n")); 1580 (void) printf("http://www.opensolaris.org/os/community/zfs/" 1581 "version/zpl/N\n\n"); 1582 (void) printf(gettext("Where 'N' is the version number.\n")); 1583 ret = 0; 1584 } else if (argc || all) { 1585 /* Upgrade filesystems */ 1586 if (cb.cb_version == 0) 1587 cb.cb_version = ZPL_VERSION; 1588 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM, 1589 NULL, NULL, 0, upgrade_set_callback, &cb); 1590 (void) printf(gettext("%llu filesystems upgraded\n"), 1591 cb.cb_numupgraded); 1592 if (cb.cb_numsamegraded) { 1593 (void) printf(gettext("%llu filesystems already at " 1594 "this version\n"), 1595 cb.cb_numsamegraded); 1596 } 1597 if (cb.cb_numfailed != 0) 1598 ret = 1; 1599 } else { 1600 /* List old-version filesytems */ 1601 boolean_t found; 1602 (void) printf(gettext("This system is currently running " 1603 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION); 1604 1605 flags |= ZFS_ITER_RECURSE; 1606 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM, 1607 NULL, NULL, 0, upgrade_list_callback, &cb); 1608 1609 found = cb.cb_foundone; 1610 cb.cb_foundone = B_FALSE; 1611 cb.cb_newer = B_TRUE; 1612 1613 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM, 1614 NULL, NULL, 0, upgrade_list_callback, &cb); 1615 1616 if (!cb.cb_foundone && !found) { 1617 (void) printf(gettext("All filesystems are " 1618 "formatted with the current version.\n")); 1619 } 1620 } 1621 1622 return (ret); 1623 } 1624 1625 /* 1626 * list [-r][-d max] [-H] [-o property[,property]...] [-t type[,type]...] 1627 * [-s property [-s property]...] [-S property [-S property]...] 1628 * <dataset> ... 1629 * 1630 * -r Recurse over all children 1631 * -d Limit recursion by depth. 1632 * -H Scripted mode; elide headers and separate columns by tabs 1633 * -o Control which fields to display. 1634 * -t Control which object types to display. 1635 * -s Specify sort columns, descending order. 1636 * -S Specify sort columns, ascending order. 1637 * 1638 * When given no arguments, lists all filesystems in the system. 1639 * Otherwise, list the specified datasets, optionally recursing down them if 1640 * '-r' is specified. 1641 */ 1642 typedef struct list_cbdata { 1643 boolean_t cb_first; 1644 boolean_t cb_scripted; 1645 zprop_list_t *cb_proplist; 1646 } list_cbdata_t; 1647 1648 /* 1649 * Given a list of columns to display, output appropriate headers for each one. 1650 */ 1651 static void 1652 print_header(zprop_list_t *pl) 1653 { 1654 char headerbuf[ZFS_MAXPROPLEN]; 1655 const char *header; 1656 int i; 1657 boolean_t first = B_TRUE; 1658 boolean_t right_justify; 1659 1660 for (; pl != NULL; pl = pl->pl_next) { 1661 if (!first) { 1662 (void) printf(" "); 1663 } else { 1664 first = B_FALSE; 1665 } 1666 1667 right_justify = B_FALSE; 1668 if (pl->pl_prop != ZPROP_INVAL) { 1669 header = zfs_prop_column_name(pl->pl_prop); 1670 right_justify = zfs_prop_align_right(pl->pl_prop); 1671 } else { 1672 for (i = 0; pl->pl_user_prop[i] != '\0'; i++) 1673 headerbuf[i] = toupper(pl->pl_user_prop[i]); 1674 headerbuf[i] = '\0'; 1675 header = headerbuf; 1676 } 1677 1678 if (pl->pl_next == NULL && !right_justify) 1679 (void) printf("%s", header); 1680 else if (right_justify) 1681 (void) printf("%*s", pl->pl_width, header); 1682 else 1683 (void) printf("%-*s", pl->pl_width, header); 1684 } 1685 1686 (void) printf("\n"); 1687 } 1688 1689 /* 1690 * Given a dataset and a list of fields, print out all the properties according 1691 * to the described layout. 1692 */ 1693 static void 1694 print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted) 1695 { 1696 boolean_t first = B_TRUE; 1697 char property[ZFS_MAXPROPLEN]; 1698 nvlist_t *userprops = zfs_get_user_props(zhp); 1699 nvlist_t *propval; 1700 char *propstr; 1701 boolean_t right_justify; 1702 int width; 1703 1704 for (; pl != NULL; pl = pl->pl_next) { 1705 if (!first) { 1706 if (scripted) 1707 (void) printf("\t"); 1708 else 1709 (void) printf(" "); 1710 } else { 1711 first = B_FALSE; 1712 } 1713 1714 right_justify = B_FALSE; 1715 if (pl->pl_prop != ZPROP_INVAL) { 1716 if (zfs_prop_get(zhp, pl->pl_prop, property, 1717 sizeof (property), NULL, NULL, 0, B_FALSE) != 0) 1718 propstr = "-"; 1719 else 1720 propstr = property; 1721 1722 right_justify = zfs_prop_align_right(pl->pl_prop); 1723 } else { 1724 if (nvlist_lookup_nvlist(userprops, 1725 pl->pl_user_prop, &propval) != 0) 1726 propstr = "-"; 1727 else 1728 verify(nvlist_lookup_string(propval, 1729 ZPROP_VALUE, &propstr) == 0); 1730 } 1731 1732 width = pl->pl_width; 1733 1734 /* 1735 * If this is being called in scripted mode, or if this is the 1736 * last column and it is left-justified, don't include a width 1737 * format specifier. 1738 */ 1739 if (scripted || (pl->pl_next == NULL && !right_justify)) 1740 (void) printf("%s", propstr); 1741 else if (right_justify) 1742 (void) printf("%*s", width, propstr); 1743 else 1744 (void) printf("%-*s", width, propstr); 1745 } 1746 1747 (void) printf("\n"); 1748 } 1749 1750 /* 1751 * Generic callback function to list a dataset or snapshot. 1752 */ 1753 static int 1754 list_callback(zfs_handle_t *zhp, void *data) 1755 { 1756 list_cbdata_t *cbp = data; 1757 1758 if (cbp->cb_first) { 1759 if (!cbp->cb_scripted) 1760 print_header(cbp->cb_proplist); 1761 cbp->cb_first = B_FALSE; 1762 } 1763 1764 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted); 1765 1766 return (0); 1767 } 1768 1769 static int 1770 zfs_do_list(int argc, char **argv) 1771 { 1772 int c; 1773 boolean_t scripted = B_FALSE; 1774 static char default_fields[] = 1775 "name,used,available,referenced,mountpoint"; 1776 int types = ZFS_TYPE_DATASET; 1777 boolean_t types_specified = B_FALSE; 1778 char *fields = NULL; 1779 list_cbdata_t cb = { 0 }; 1780 char *value; 1781 int limit = 0; 1782 int ret; 1783 zfs_sort_column_t *sortcol = NULL; 1784 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS; 1785 1786 /* check options */ 1787 while ((c = getopt(argc, argv, ":d:o:rt:Hs:S:")) != -1) { 1788 switch (c) { 1789 case 'o': 1790 fields = optarg; 1791 break; 1792 case 'd': 1793 limit = parse_depth(optarg, &flags); 1794 break; 1795 case 'r': 1796 flags |= ZFS_ITER_RECURSE; 1797 break; 1798 case 'H': 1799 scripted = B_TRUE; 1800 break; 1801 case 's': 1802 if (zfs_add_sort_column(&sortcol, optarg, 1803 B_FALSE) != 0) { 1804 (void) fprintf(stderr, 1805 gettext("invalid property '%s'\n"), optarg); 1806 usage(B_FALSE); 1807 } 1808 break; 1809 case 'S': 1810 if (zfs_add_sort_column(&sortcol, optarg, 1811 B_TRUE) != 0) { 1812 (void) fprintf(stderr, 1813 gettext("invalid property '%s'\n"), optarg); 1814 usage(B_FALSE); 1815 } 1816 break; 1817 case 't': 1818 types = 0; 1819 types_specified = B_TRUE; 1820 flags &= ~ZFS_ITER_PROP_LISTSNAPS; 1821 while (*optarg != '\0') { 1822 static char *type_subopts[] = { "filesystem", 1823 "volume", "snapshot", "all", NULL }; 1824 1825 switch (getsubopt(&optarg, type_subopts, 1826 &value)) { 1827 case 0: 1828 types |= ZFS_TYPE_FILESYSTEM; 1829 break; 1830 case 1: 1831 types |= ZFS_TYPE_VOLUME; 1832 break; 1833 case 2: 1834 types |= ZFS_TYPE_SNAPSHOT; 1835 break; 1836 case 3: 1837 types = ZFS_TYPE_DATASET; 1838 break; 1839 1840 default: 1841 (void) fprintf(stderr, 1842 gettext("invalid type '%s'\n"), 1843 value); 1844 usage(B_FALSE); 1845 } 1846 } 1847 break; 1848 case ':': 1849 (void) fprintf(stderr, gettext("missing argument for " 1850 "'%c' option\n"), optopt); 1851 usage(B_FALSE); 1852 break; 1853 case '?': 1854 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1855 optopt); 1856 usage(B_FALSE); 1857 } 1858 } 1859 1860 argc -= optind; 1861 argv += optind; 1862 1863 if (fields == NULL) 1864 fields = default_fields; 1865 1866 /* 1867 * If "-o space" and no types were specified, don't display snapshots. 1868 */ 1869 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE) 1870 types &= ~ZFS_TYPE_SNAPSHOT; 1871 1872 /* 1873 * If the user specifies '-o all', the zprop_get_list() doesn't 1874 * normally include the name of the dataset. For 'zfs list', we always 1875 * want this property to be first. 1876 */ 1877 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1878 != 0) 1879 usage(B_FALSE); 1880 1881 cb.cb_scripted = scripted; 1882 cb.cb_first = B_TRUE; 1883 1884 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist, 1885 limit, list_callback, &cb); 1886 1887 zprop_free_list(cb.cb_proplist); 1888 zfs_free_sort_columns(sortcol); 1889 1890 if (ret == 0 && cb.cb_first && !cb.cb_scripted) 1891 (void) printf(gettext("no datasets available\n")); 1892 1893 return (ret); 1894 } 1895 1896 /* 1897 * zfs rename <fs | snap | vol> <fs | snap | vol> 1898 * zfs rename -p <fs | vol> <fs | vol> 1899 * zfs rename -r <snap> <snap> 1900 * 1901 * Renames the given dataset to another of the same type. 1902 * 1903 * The '-p' flag creates all the non-existing ancestors of the target first. 1904 */ 1905 /* ARGSUSED */ 1906 static int 1907 zfs_do_rename(int argc, char **argv) 1908 { 1909 zfs_handle_t *zhp; 1910 int c; 1911 int ret; 1912 boolean_t recurse = B_FALSE; 1913 boolean_t parents = B_FALSE; 1914 1915 /* check options */ 1916 while ((c = getopt(argc, argv, "pr")) != -1) { 1917 switch (c) { 1918 case 'p': 1919 parents = B_TRUE; 1920 break; 1921 case 'r': 1922 recurse = B_TRUE; 1923 break; 1924 case '?': 1925 default: 1926 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1927 optopt); 1928 usage(B_FALSE); 1929 } 1930 } 1931 1932 argc -= optind; 1933 argv += optind; 1934 1935 /* check number of arguments */ 1936 if (argc < 1) { 1937 (void) fprintf(stderr, gettext("missing source dataset " 1938 "argument\n")); 1939 usage(B_FALSE); 1940 } 1941 if (argc < 2) { 1942 (void) fprintf(stderr, gettext("missing target dataset " 1943 "argument\n")); 1944 usage(B_FALSE); 1945 } 1946 if (argc > 2) { 1947 (void) fprintf(stderr, gettext("too many arguments\n")); 1948 usage(B_FALSE); 1949 } 1950 1951 if (recurse && parents) { 1952 (void) fprintf(stderr, gettext("-p and -r options are mutually " 1953 "exclusive\n")); 1954 usage(B_FALSE); 1955 } 1956 1957 if (recurse && strchr(argv[0], '@') == 0) { 1958 (void) fprintf(stderr, gettext("source dataset for recursive " 1959 "rename must be a snapshot\n")); 1960 usage(B_FALSE); 1961 } 1962 1963 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM | 1964 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL) 1965 return (1); 1966 1967 /* If we were asked and the name looks good, try to create ancestors. */ 1968 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) && 1969 zfs_create_ancestors(g_zfs, argv[1]) != 0) { 1970 zfs_close(zhp); 1971 return (1); 1972 } 1973 1974 ret = (zfs_rename(zhp, argv[1], recurse) != 0); 1975 1976 zfs_close(zhp); 1977 return (ret); 1978 } 1979 1980 /* 1981 * zfs promote <fs> 1982 * 1983 * Promotes the given clone fs to be the parent 1984 */ 1985 /* ARGSUSED */ 1986 static int 1987 zfs_do_promote(int argc, char **argv) 1988 { 1989 zfs_handle_t *zhp; 1990 int ret; 1991 1992 /* check options */ 1993 if (argc > 1 && argv[1][0] == '-') { 1994 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1995 argv[1][1]); 1996 usage(B_FALSE); 1997 } 1998 1999 /* check number of arguments */ 2000 if (argc < 2) { 2001 (void) fprintf(stderr, gettext("missing clone filesystem" 2002 " argument\n")); 2003 usage(B_FALSE); 2004 } 2005 if (argc > 2) { 2006 (void) fprintf(stderr, gettext("too many arguments\n")); 2007 usage(B_FALSE); 2008 } 2009 2010 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2011 if (zhp == NULL) 2012 return (1); 2013 2014 ret = (zfs_promote(zhp) != 0); 2015 2016 2017 zfs_close(zhp); 2018 return (ret); 2019 } 2020 2021 /* 2022 * zfs rollback [-rRf] <snapshot> 2023 * 2024 * -r Delete any intervening snapshots before doing rollback 2025 * -R Delete any snapshots and their clones 2026 * -f ignored for backwards compatability 2027 * 2028 * Given a filesystem, rollback to a specific snapshot, discarding any changes 2029 * since then and making it the active dataset. If more recent snapshots exist, 2030 * the command will complain unless the '-r' flag is given. 2031 */ 2032 typedef struct rollback_cbdata { 2033 uint64_t cb_create; 2034 boolean_t cb_first; 2035 int cb_doclones; 2036 char *cb_target; 2037 int cb_error; 2038 boolean_t cb_recurse; 2039 boolean_t cb_dependent; 2040 } rollback_cbdata_t; 2041 2042 /* 2043 * Report any snapshots more recent than the one specified. Used when '-r' is 2044 * not specified. We reuse this same callback for the snapshot dependents - if 2045 * 'cb_dependent' is set, then this is a dependent and we should report it 2046 * without checking the transaction group. 2047 */ 2048 static int 2049 rollback_check(zfs_handle_t *zhp, void *data) 2050 { 2051 rollback_cbdata_t *cbp = data; 2052 2053 if (cbp->cb_doclones) { 2054 zfs_close(zhp); 2055 return (0); 2056 } 2057 2058 if (!cbp->cb_dependent) { 2059 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 && 2060 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && 2061 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > 2062 cbp->cb_create) { 2063 2064 if (cbp->cb_first && !cbp->cb_recurse) { 2065 (void) fprintf(stderr, gettext("cannot " 2066 "rollback to '%s': more recent snapshots " 2067 "exist\n"), 2068 cbp->cb_target); 2069 (void) fprintf(stderr, gettext("use '-r' to " 2070 "force deletion of the following " 2071 "snapshots:\n")); 2072 cbp->cb_first = 0; 2073 cbp->cb_error = 1; 2074 } 2075 2076 if (cbp->cb_recurse) { 2077 cbp->cb_dependent = B_TRUE; 2078 if (zfs_iter_dependents(zhp, B_TRUE, 2079 rollback_check, cbp) != 0) { 2080 zfs_close(zhp); 2081 return (-1); 2082 } 2083 cbp->cb_dependent = B_FALSE; 2084 } else { 2085 (void) fprintf(stderr, "%s\n", 2086 zfs_get_name(zhp)); 2087 } 2088 } 2089 } else { 2090 if (cbp->cb_first && cbp->cb_recurse) { 2091 (void) fprintf(stderr, gettext("cannot rollback to " 2092 "'%s': clones of previous snapshots exist\n"), 2093 cbp->cb_target); 2094 (void) fprintf(stderr, gettext("use '-R' to " 2095 "force deletion of the following clones and " 2096 "dependents:\n")); 2097 cbp->cb_first = 0; 2098 cbp->cb_error = 1; 2099 } 2100 2101 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 2102 } 2103 2104 zfs_close(zhp); 2105 return (0); 2106 } 2107 2108 static int 2109 zfs_do_rollback(int argc, char **argv) 2110 { 2111 int ret; 2112 int c; 2113 boolean_t force = B_FALSE; 2114 rollback_cbdata_t cb = { 0 }; 2115 zfs_handle_t *zhp, *snap; 2116 char parentname[ZFS_MAXNAMELEN]; 2117 char *delim; 2118 2119 /* check options */ 2120 while ((c = getopt(argc, argv, "rRf")) != -1) { 2121 switch (c) { 2122 case 'r': 2123 cb.cb_recurse = 1; 2124 break; 2125 case 'R': 2126 cb.cb_recurse = 1; 2127 cb.cb_doclones = 1; 2128 break; 2129 case 'f': 2130 force = B_TRUE; 2131 break; 2132 case '?': 2133 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2134 optopt); 2135 usage(B_FALSE); 2136 } 2137 } 2138 2139 argc -= optind; 2140 argv += optind; 2141 2142 /* check number of arguments */ 2143 if (argc < 1) { 2144 (void) fprintf(stderr, gettext("missing dataset argument\n")); 2145 usage(B_FALSE); 2146 } 2147 if (argc > 1) { 2148 (void) fprintf(stderr, gettext("too many arguments\n")); 2149 usage(B_FALSE); 2150 } 2151 2152 /* open the snapshot */ 2153 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 2154 return (1); 2155 2156 /* open the parent dataset */ 2157 (void) strlcpy(parentname, argv[0], sizeof (parentname)); 2158 verify((delim = strrchr(parentname, '@')) != NULL); 2159 *delim = '\0'; 2160 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) { 2161 zfs_close(snap); 2162 return (1); 2163 } 2164 2165 /* 2166 * Check for more recent snapshots and/or clones based on the presence 2167 * of '-r' and '-R'. 2168 */ 2169 cb.cb_target = argv[0]; 2170 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 2171 cb.cb_first = B_TRUE; 2172 cb.cb_error = 0; 2173 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0) 2174 goto out; 2175 2176 if ((ret = cb.cb_error) != 0) 2177 goto out; 2178 2179 /* 2180 * Rollback parent to the given snapshot. 2181 */ 2182 ret = zfs_rollback(zhp, snap, force); 2183 2184 out: 2185 zfs_close(snap); 2186 zfs_close(zhp); 2187 2188 if (ret == 0) 2189 return (0); 2190 else 2191 return (1); 2192 } 2193 2194 /* 2195 * zfs set property=value { fs | snap | vol } ... 2196 * 2197 * Sets the given property for all datasets specified on the command line. 2198 */ 2199 typedef struct set_cbdata { 2200 char *cb_propname; 2201 char *cb_value; 2202 } set_cbdata_t; 2203 2204 static int 2205 set_callback(zfs_handle_t *zhp, void *data) 2206 { 2207 set_cbdata_t *cbp = data; 2208 2209 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) { 2210 switch (libzfs_errno(g_zfs)) { 2211 case EZFS_MOUNTFAILED: 2212 (void) fprintf(stderr, gettext("property may be set " 2213 "but unable to remount filesystem\n")); 2214 break; 2215 case EZFS_SHARENFSFAILED: 2216 (void) fprintf(stderr, gettext("property may be set " 2217 "but unable to reshare filesystem\n")); 2218 break; 2219 } 2220 return (1); 2221 } 2222 return (0); 2223 } 2224 2225 static int 2226 zfs_do_set(int argc, char **argv) 2227 { 2228 set_cbdata_t cb; 2229 int ret; 2230 2231 /* check for options */ 2232 if (argc > 1 && argv[1][0] == '-') { 2233 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2234 argv[1][1]); 2235 usage(B_FALSE); 2236 } 2237 2238 /* check number of arguments */ 2239 if (argc < 2) { 2240 (void) fprintf(stderr, gettext("missing property=value " 2241 "argument\n")); 2242 usage(B_FALSE); 2243 } 2244 if (argc < 3) { 2245 (void) fprintf(stderr, gettext("missing dataset name\n")); 2246 usage(B_FALSE); 2247 } 2248 2249 /* validate property=value argument */ 2250 cb.cb_propname = argv[1]; 2251 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) || 2252 (cb.cb_value[1] == '\0')) { 2253 (void) fprintf(stderr, gettext("missing value in " 2254 "property=value argument\n")); 2255 usage(B_FALSE); 2256 } 2257 2258 *cb.cb_value = '\0'; 2259 cb.cb_value++; 2260 2261 if (*cb.cb_propname == '\0') { 2262 (void) fprintf(stderr, 2263 gettext("missing property in property=value argument\n")); 2264 usage(B_FALSE); 2265 } 2266 2267 ret = zfs_for_each(argc - 2, argv + 2, NULL, 2268 ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, &cb); 2269 2270 return (ret); 2271 } 2272 2273 /* 2274 * zfs snapshot [-r] [-o prop=value] ... <fs@snap> 2275 * 2276 * Creates a snapshot with the given name. While functionally equivalent to 2277 * 'zfs create', it is a separate command to differentiate intent. 2278 */ 2279 static int 2280 zfs_do_snapshot(int argc, char **argv) 2281 { 2282 boolean_t recursive = B_FALSE; 2283 int ret; 2284 char c; 2285 nvlist_t *props; 2286 2287 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 2288 (void) fprintf(stderr, gettext("internal error: " 2289 "out of memory\n")); 2290 return (1); 2291 } 2292 2293 /* check options */ 2294 while ((c = getopt(argc, argv, "ro:")) != -1) { 2295 switch (c) { 2296 case 'o': 2297 if (parseprop(props)) 2298 return (1); 2299 break; 2300 case 'r': 2301 recursive = B_TRUE; 2302 break; 2303 case '?': 2304 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2305 optopt); 2306 goto usage; 2307 } 2308 } 2309 2310 argc -= optind; 2311 argv += optind; 2312 2313 /* check number of arguments */ 2314 if (argc < 1) { 2315 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2316 goto usage; 2317 } 2318 if (argc > 1) { 2319 (void) fprintf(stderr, gettext("too many arguments\n")); 2320 goto usage; 2321 } 2322 2323 ret = zfs_snapshot(g_zfs, argv[0], recursive, props); 2324 nvlist_free(props); 2325 if (ret && recursive) 2326 (void) fprintf(stderr, gettext("no snapshots were created\n")); 2327 return (ret != 0); 2328 2329 usage: 2330 nvlist_free(props); 2331 usage(B_FALSE); 2332 return (-1); 2333 } 2334 2335 /* 2336 * zfs send [-v] -R [-i|-I <@snap>] <fs@snap> 2337 * zfs send [-v] [-i|-I <@snap>] <fs@snap> 2338 * 2339 * Send a backup stream to stdout. 2340 */ 2341 static int 2342 zfs_do_send(int argc, char **argv) 2343 { 2344 char *fromname = NULL; 2345 char *toname = NULL; 2346 char *cp; 2347 zfs_handle_t *zhp; 2348 boolean_t doall = B_FALSE; 2349 boolean_t replicate = B_FALSE; 2350 boolean_t fromorigin = B_FALSE; 2351 boolean_t verbose = B_FALSE; 2352 int c, err; 2353 2354 /* check options */ 2355 while ((c = getopt(argc, argv, ":i:I:Rv")) != -1) { 2356 switch (c) { 2357 case 'i': 2358 if (fromname) 2359 usage(B_FALSE); 2360 fromname = optarg; 2361 break; 2362 case 'I': 2363 if (fromname) 2364 usage(B_FALSE); 2365 fromname = optarg; 2366 doall = B_TRUE; 2367 break; 2368 case 'R': 2369 replicate = B_TRUE; 2370 break; 2371 case 'v': 2372 verbose = B_TRUE; 2373 break; 2374 case ':': 2375 (void) fprintf(stderr, gettext("missing argument for " 2376 "'%c' option\n"), optopt); 2377 usage(B_FALSE); 2378 break; 2379 case '?': 2380 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2381 optopt); 2382 usage(B_FALSE); 2383 } 2384 } 2385 2386 argc -= optind; 2387 argv += optind; 2388 2389 /* check number of arguments */ 2390 if (argc < 1) { 2391 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2392 usage(B_FALSE); 2393 } 2394 if (argc > 1) { 2395 (void) fprintf(stderr, gettext("too many arguments\n")); 2396 usage(B_FALSE); 2397 } 2398 2399 if (isatty(STDOUT_FILENO)) { 2400 (void) fprintf(stderr, 2401 gettext("Error: Stream can not be written to a terminal.\n" 2402 "You must redirect standard output.\n")); 2403 return (1); 2404 } 2405 2406 cp = strchr(argv[0], '@'); 2407 if (cp == NULL) { 2408 (void) fprintf(stderr, 2409 gettext("argument must be a snapshot\n")); 2410 usage(B_FALSE); 2411 } 2412 *cp = '\0'; 2413 toname = cp + 1; 2414 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2415 if (zhp == NULL) 2416 return (1); 2417 2418 /* 2419 * If they specified the full path to the snapshot, chop off 2420 * everything except the short name of the snapshot, but special 2421 * case if they specify the origin. 2422 */ 2423 if (fromname && (cp = strchr(fromname, '@')) != NULL) { 2424 char origin[ZFS_MAXNAMELEN]; 2425 zprop_source_t src; 2426 2427 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN, 2428 origin, sizeof (origin), &src, NULL, 0, B_FALSE); 2429 2430 if (strcmp(origin, fromname) == 0) { 2431 fromname = NULL; 2432 fromorigin = B_TRUE; 2433 } else { 2434 *cp = '\0'; 2435 if (cp != fromname && strcmp(argv[0], fromname)) { 2436 (void) fprintf(stderr, 2437 gettext("incremental source must be " 2438 "in same filesystem\n")); 2439 usage(B_FALSE); 2440 } 2441 fromname = cp + 1; 2442 if (strchr(fromname, '@') || strchr(fromname, '/')) { 2443 (void) fprintf(stderr, 2444 gettext("invalid incremental source\n")); 2445 usage(B_FALSE); 2446 } 2447 } 2448 } 2449 2450 if (replicate && fromname == NULL) 2451 doall = B_TRUE; 2452 2453 err = zfs_send(zhp, fromname, toname, replicate, doall, fromorigin, 2454 verbose, STDOUT_FILENO); 2455 zfs_close(zhp); 2456 2457 return (err != 0); 2458 } 2459 2460 /* 2461 * zfs receive [-dnvF] <fs@snap> 2462 * 2463 * Restore a backup stream from stdin. 2464 */ 2465 static int 2466 zfs_do_receive(int argc, char **argv) 2467 { 2468 int c, err; 2469 recvflags_t flags; 2470 2471 bzero(&flags, sizeof (recvflags_t)); 2472 /* check options */ 2473 while ((c = getopt(argc, argv, ":dnuvF")) != -1) { 2474 switch (c) { 2475 case 'd': 2476 flags.isprefix = B_TRUE; 2477 break; 2478 case 'n': 2479 flags.dryrun = B_TRUE; 2480 break; 2481 case 'u': 2482 flags.nomount = B_TRUE; 2483 break; 2484 case 'v': 2485 flags.verbose = B_TRUE; 2486 break; 2487 case 'F': 2488 flags.force = B_TRUE; 2489 break; 2490 case ':': 2491 (void) fprintf(stderr, gettext("missing argument for " 2492 "'%c' option\n"), optopt); 2493 usage(B_FALSE); 2494 break; 2495 case '?': 2496 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2497 optopt); 2498 usage(B_FALSE); 2499 } 2500 } 2501 2502 argc -= optind; 2503 argv += optind; 2504 2505 /* check number of arguments */ 2506 if (argc < 1) { 2507 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2508 usage(B_FALSE); 2509 } 2510 if (argc > 1) { 2511 (void) fprintf(stderr, gettext("too many arguments\n")); 2512 usage(B_FALSE); 2513 } 2514 2515 if (isatty(STDIN_FILENO)) { 2516 (void) fprintf(stderr, 2517 gettext("Error: Backup stream can not be read " 2518 "from a terminal.\n" 2519 "You must redirect standard input.\n")); 2520 return (1); 2521 } 2522 2523 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL); 2524 2525 return (err != 0); 2526 } 2527 2528 typedef struct allow_cb { 2529 int a_permcnt; 2530 size_t a_treeoffset; 2531 } allow_cb_t; 2532 2533 static void 2534 zfs_print_perms(avl_tree_t *tree) 2535 { 2536 zfs_perm_node_t *permnode; 2537 2538 permnode = avl_first(tree); 2539 while (permnode != NULL) { 2540 (void) printf("%s", permnode->z_pname); 2541 permnode = AVL_NEXT(tree, permnode); 2542 if (permnode) 2543 (void) printf(","); 2544 else 2545 (void) printf("\n"); 2546 } 2547 } 2548 2549 /* 2550 * Iterate over user/groups/everyone/... and the call perm_iter 2551 * function to print actual permission when tree has >0 nodes. 2552 */ 2553 static void 2554 zfs_iter_perms(avl_tree_t *tree, const char *banner, allow_cb_t *cb) 2555 { 2556 zfs_allow_node_t *item; 2557 avl_tree_t *ptree; 2558 2559 item = avl_first(tree); 2560 while (item) { 2561 ptree = (void *)((char *)item + cb->a_treeoffset); 2562 if (avl_numnodes(ptree)) { 2563 if (cb->a_permcnt++ == 0) 2564 (void) printf("%s\n", banner); 2565 (void) printf("\t%s", item->z_key); 2566 /* 2567 * Avoid an extra space being printed 2568 * for "everyone" which is keyed with a null 2569 * string 2570 */ 2571 if (item->z_key[0] != '\0') 2572 (void) printf(" "); 2573 zfs_print_perms(ptree); 2574 } 2575 item = AVL_NEXT(tree, item); 2576 } 2577 } 2578 2579 #define LINES "-------------------------------------------------------------\n" 2580 static int 2581 zfs_print_allows(char *ds) 2582 { 2583 zfs_allow_t *curperms, *perms; 2584 zfs_handle_t *zhp; 2585 allow_cb_t allowcb = { 0 }; 2586 char banner[MAXPATHLEN]; 2587 2588 if (ds[0] == '-') 2589 usage(B_FALSE); 2590 2591 if (strrchr(ds, '@')) { 2592 (void) fprintf(stderr, gettext("Snapshots don't have 'allow'" 2593 " permissions\n")); 2594 return (1); 2595 } 2596 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL) 2597 return (1); 2598 2599 if (zfs_perm_get(zhp, &perms)) { 2600 (void) fprintf(stderr, 2601 gettext("Failed to retrieve 'allows' on %s\n"), ds); 2602 zfs_close(zhp); 2603 return (1); 2604 } 2605 2606 zfs_close(zhp); 2607 2608 if (perms != NULL) 2609 (void) printf("%s", LINES); 2610 for (curperms = perms; curperms; curperms = curperms->z_next) { 2611 2612 (void) snprintf(banner, sizeof (banner), 2613 gettext("Permission sets on (%s)"), curperms->z_setpoint); 2614 allowcb.a_treeoffset = 2615 offsetof(zfs_allow_node_t, z_localdescend); 2616 allowcb.a_permcnt = 0; 2617 zfs_iter_perms(&curperms->z_sets, banner, &allowcb); 2618 2619 (void) snprintf(banner, sizeof (banner), 2620 gettext("Create time permissions on (%s)"), 2621 curperms->z_setpoint); 2622 allowcb.a_treeoffset = 2623 offsetof(zfs_allow_node_t, z_localdescend); 2624 allowcb.a_permcnt = 0; 2625 zfs_iter_perms(&curperms->z_crperms, banner, &allowcb); 2626 2627 2628 (void) snprintf(banner, sizeof (banner), 2629 gettext("Local permissions on (%s)"), curperms->z_setpoint); 2630 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_local); 2631 allowcb.a_permcnt = 0; 2632 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2633 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2634 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2635 2636 (void) snprintf(banner, sizeof (banner), 2637 gettext("Descendent permissions on (%s)"), 2638 curperms->z_setpoint); 2639 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_descend); 2640 allowcb.a_permcnt = 0; 2641 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2642 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2643 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2644 2645 (void) snprintf(banner, sizeof (banner), 2646 gettext("Local+Descendent permissions on (%s)"), 2647 curperms->z_setpoint); 2648 allowcb.a_treeoffset = 2649 offsetof(zfs_allow_node_t, z_localdescend); 2650 allowcb.a_permcnt = 0; 2651 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2652 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2653 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2654 2655 (void) printf("%s", LINES); 2656 } 2657 zfs_free_allows(perms); 2658 return (0); 2659 } 2660 2661 #define ALLOWOPTIONS "ldcsu:g:e" 2662 #define UNALLOWOPTIONS "ldcsu:g:er" 2663 2664 /* 2665 * Validate options, and build necessary datastructure to display/remove/add 2666 * permissions. 2667 * Returns 0 - If permissions should be added/removed 2668 * Returns 1 - If permissions should be displayed. 2669 * Returns -1 - on failure 2670 */ 2671 int 2672 parse_allow_args(int *argc, char **argv[], boolean_t unallow, 2673 char **ds, int *recurse, nvlist_t **zperms) 2674 { 2675 int c; 2676 char *options = unallow ? UNALLOWOPTIONS : ALLOWOPTIONS; 2677 zfs_deleg_inherit_t deleg_type = ZFS_DELEG_NONE; 2678 zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN; 2679 char *who = NULL; 2680 char *perms = NULL; 2681 zfs_handle_t *zhp; 2682 2683 while ((c = getopt(*argc, *argv, options)) != -1) { 2684 switch (c) { 2685 case 'l': 2686 if (who_type == ZFS_DELEG_CREATE || 2687 who_type == ZFS_DELEG_NAMED_SET) 2688 usage(B_FALSE); 2689 2690 deleg_type |= ZFS_DELEG_PERM_LOCAL; 2691 break; 2692 case 'd': 2693 if (who_type == ZFS_DELEG_CREATE || 2694 who_type == ZFS_DELEG_NAMED_SET) 2695 usage(B_FALSE); 2696 2697 deleg_type |= ZFS_DELEG_PERM_DESCENDENT; 2698 break; 2699 case 'r': 2700 *recurse = B_TRUE; 2701 break; 2702 case 'c': 2703 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2704 usage(B_FALSE); 2705 if (deleg_type) 2706 usage(B_FALSE); 2707 who_type = ZFS_DELEG_CREATE; 2708 break; 2709 case 's': 2710 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2711 usage(B_FALSE); 2712 if (deleg_type) 2713 usage(B_FALSE); 2714 who_type = ZFS_DELEG_NAMED_SET; 2715 break; 2716 case 'u': 2717 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2718 usage(B_FALSE); 2719 who_type = ZFS_DELEG_USER; 2720 who = optarg; 2721 break; 2722 case 'g': 2723 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2724 usage(B_FALSE); 2725 who_type = ZFS_DELEG_GROUP; 2726 who = optarg; 2727 break; 2728 case 'e': 2729 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2730 usage(B_FALSE); 2731 who_type = ZFS_DELEG_EVERYONE; 2732 break; 2733 default: 2734 usage(B_FALSE); 2735 break; 2736 } 2737 } 2738 2739 if (deleg_type == 0) 2740 deleg_type = ZFS_DELEG_PERM_LOCALDESCENDENT; 2741 2742 *argc -= optind; 2743 *argv += optind; 2744 2745 if (unallow == B_FALSE && *argc == 1) { 2746 /* 2747 * Only print permissions if no options were processed 2748 */ 2749 if (optind == 1) 2750 return (1); 2751 else 2752 usage(B_FALSE); 2753 } 2754 2755 /* 2756 * initialize variables for zfs_build_perms based on number 2757 * of arguments. 2758 * 3 arguments ==> zfs [un]allow joe perm,perm,perm <dataset> or 2759 * zfs [un]allow -s @set1 perm,perm <dataset> 2760 * 2 arguments ==> zfs [un]allow -c perm,perm <dataset> or 2761 * zfs [un]allow -u|-g <name> perm <dataset> or 2762 * zfs [un]allow -e perm,perm <dataset> 2763 * zfs unallow joe <dataset> 2764 * zfs unallow -s @set1 <dataset> 2765 * 1 argument ==> zfs [un]allow -e <dataset> or 2766 * zfs [un]allow -c <dataset> 2767 */ 2768 2769 switch (*argc) { 2770 case 3: 2771 perms = (*argv)[1]; 2772 who = (*argv)[0]; 2773 *ds = (*argv)[2]; 2774 2775 /* 2776 * advance argc/argv for do_allow cases. 2777 * for do_allow case make sure who have a know who type 2778 * and its not a permission set. 2779 */ 2780 if (unallow == B_TRUE) { 2781 *argc -= 2; 2782 *argv += 2; 2783 } else if (who_type != ZFS_DELEG_WHO_UNKNOWN && 2784 who_type != ZFS_DELEG_NAMED_SET) 2785 usage(B_FALSE); 2786 break; 2787 2788 case 2: 2789 if (unallow == B_TRUE && (who_type == ZFS_DELEG_EVERYONE || 2790 who_type == ZFS_DELEG_CREATE || who != NULL)) { 2791 perms = (*argv)[0]; 2792 *ds = (*argv)[1]; 2793 } else { 2794 if (unallow == B_FALSE && 2795 (who_type == ZFS_DELEG_WHO_UNKNOWN || 2796 who_type == ZFS_DELEG_NAMED_SET)) 2797 usage(B_FALSE); 2798 else if (who_type == ZFS_DELEG_WHO_UNKNOWN || 2799 who_type == ZFS_DELEG_NAMED_SET) 2800 who = (*argv)[0]; 2801 else if (who_type != ZFS_DELEG_NAMED_SET) 2802 perms = (*argv)[0]; 2803 *ds = (*argv)[1]; 2804 } 2805 if (unallow == B_TRUE) { 2806 (*argc)--; 2807 (*argv)++; 2808 } 2809 break; 2810 2811 case 1: 2812 if (unallow == B_FALSE) 2813 usage(B_FALSE); 2814 if (who == NULL && who_type != ZFS_DELEG_CREATE && 2815 who_type != ZFS_DELEG_EVERYONE) 2816 usage(B_FALSE); 2817 *ds = (*argv)[0]; 2818 break; 2819 2820 default: 2821 usage(B_FALSE); 2822 } 2823 2824 if (strrchr(*ds, '@')) { 2825 (void) fprintf(stderr, 2826 gettext("Can't set or remove 'allow' permissions " 2827 "on snapshots.\n")); 2828 return (-1); 2829 } 2830 2831 if ((zhp = zfs_open(g_zfs, *ds, ZFS_TYPE_DATASET)) == NULL) 2832 return (-1); 2833 2834 if ((zfs_build_perms(zhp, who, perms, 2835 who_type, deleg_type, zperms)) != 0) { 2836 zfs_close(zhp); 2837 return (-1); 2838 } 2839 zfs_close(zhp); 2840 return (0); 2841 } 2842 2843 static int 2844 zfs_do_allow(int argc, char **argv) 2845 { 2846 char *ds; 2847 nvlist_t *zperms = NULL; 2848 zfs_handle_t *zhp; 2849 int unused; 2850 int ret; 2851 2852 if ((ret = parse_allow_args(&argc, &argv, B_FALSE, &ds, 2853 &unused, &zperms)) == -1) 2854 return (1); 2855 2856 if (ret == 1) 2857 return (zfs_print_allows(argv[0])); 2858 2859 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL) 2860 return (1); 2861 2862 if (zfs_perm_set(zhp, zperms)) { 2863 zfs_close(zhp); 2864 nvlist_free(zperms); 2865 return (1); 2866 } 2867 nvlist_free(zperms); 2868 zfs_close(zhp); 2869 2870 return (0); 2871 } 2872 2873 static int 2874 unallow_callback(zfs_handle_t *zhp, void *data) 2875 { 2876 nvlist_t *nvp = (nvlist_t *)data; 2877 int error; 2878 2879 error = zfs_perm_remove(zhp, nvp); 2880 if (error) { 2881 (void) fprintf(stderr, gettext("Failed to remove permissions " 2882 "on %s\n"), zfs_get_name(zhp)); 2883 } 2884 return (error); 2885 } 2886 2887 static int 2888 zfs_do_unallow(int argc, char **argv) 2889 { 2890 int recurse = B_FALSE; 2891 char *ds; 2892 int error; 2893 nvlist_t *zperms = NULL; 2894 int flags = 0; 2895 2896 if (parse_allow_args(&argc, &argv, B_TRUE, 2897 &ds, &recurse, &zperms) == -1) 2898 return (1); 2899 2900 if (recurse) 2901 flags |= ZFS_ITER_RECURSE; 2902 error = zfs_for_each(argc, argv, flags, 2903 ZFS_TYPE_FILESYSTEM|ZFS_TYPE_VOLUME, NULL, 2904 NULL, 0, unallow_callback, (void *)zperms); 2905 2906 if (zperms) 2907 nvlist_free(zperms); 2908 2909 return (error); 2910 } 2911 2912 typedef struct get_all_cbdata { 2913 zfs_handle_t **cb_handles; 2914 size_t cb_alloc; 2915 size_t cb_used; 2916 uint_t cb_types; 2917 boolean_t cb_verbose; 2918 } get_all_cbdata_t; 2919 2920 #define CHECK_SPINNER 30 2921 #define SPINNER_TIME 3 /* seconds */ 2922 #define MOUNT_TIME 5 /* seconds */ 2923 2924 static int 2925 get_one_dataset(zfs_handle_t *zhp, void *data) 2926 { 2927 static char spin[] = { '-', '\\', '|', '/' }; 2928 static int spinval = 0; 2929 static int spincheck = 0; 2930 static time_t last_spin_time = (time_t)0; 2931 get_all_cbdata_t *cbp = data; 2932 zfs_type_t type = zfs_get_type(zhp); 2933 2934 if (cbp->cb_verbose) { 2935 if (--spincheck < 0) { 2936 time_t now = time(NULL); 2937 if (last_spin_time + SPINNER_TIME < now) { 2938 (void) printf("\b%c", spin[spinval++ % 4]); 2939 (void) fflush(stdout); 2940 last_spin_time = now; 2941 } 2942 spincheck = CHECK_SPINNER; 2943 } 2944 } 2945 2946 /* 2947 * Interate over any nested datasets. 2948 */ 2949 if (type == ZFS_TYPE_FILESYSTEM && 2950 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) { 2951 zfs_close(zhp); 2952 return (1); 2953 } 2954 2955 /* 2956 * Skip any datasets whose type does not match. 2957 */ 2958 if ((type & cbp->cb_types) == 0) { 2959 zfs_close(zhp); 2960 return (0); 2961 } 2962 2963 if (cbp->cb_alloc == cbp->cb_used) { 2964 zfs_handle_t **handles; 2965 2966 if (cbp->cb_alloc == 0) 2967 cbp->cb_alloc = 64; 2968 else 2969 cbp->cb_alloc *= 2; 2970 2971 handles = safe_malloc(cbp->cb_alloc * sizeof (void *)); 2972 2973 if (cbp->cb_handles) { 2974 bcopy(cbp->cb_handles, handles, 2975 cbp->cb_used * sizeof (void *)); 2976 free(cbp->cb_handles); 2977 } 2978 2979 cbp->cb_handles = handles; 2980 } 2981 2982 cbp->cb_handles[cbp->cb_used++] = zhp; 2983 2984 return (0); 2985 } 2986 2987 static void 2988 get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count, 2989 boolean_t verbose) 2990 { 2991 get_all_cbdata_t cb = { 0 }; 2992 cb.cb_types = types; 2993 cb.cb_verbose = verbose; 2994 2995 if (verbose) { 2996 (void) printf("%s: *", gettext("Reading ZFS config")); 2997 (void) fflush(stdout); 2998 } 2999 3000 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb); 3001 3002 *dslist = cb.cb_handles; 3003 *count = cb.cb_used; 3004 3005 if (verbose) { 3006 (void) printf("\b%s\n", gettext("done.")); 3007 } 3008 } 3009 3010 static int 3011 dataset_cmp(const void *a, const void *b) 3012 { 3013 zfs_handle_t **za = (zfs_handle_t **)a; 3014 zfs_handle_t **zb = (zfs_handle_t **)b; 3015 char mounta[MAXPATHLEN]; 3016 char mountb[MAXPATHLEN]; 3017 boolean_t gota, gotb; 3018 3019 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0) 3020 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta, 3021 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0); 3022 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0) 3023 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb, 3024 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0); 3025 3026 if (gota && gotb) 3027 return (strcmp(mounta, mountb)); 3028 3029 if (gota) 3030 return (-1); 3031 if (gotb) 3032 return (1); 3033 3034 return (strcmp(zfs_get_name(a), zfs_get_name(b))); 3035 } 3036 3037 /* 3038 * Generic callback for sharing or mounting filesystems. Because the code is so 3039 * similar, we have a common function with an extra parameter to determine which 3040 * mode we are using. 3041 */ 3042 #define OP_SHARE 0x1 3043 #define OP_MOUNT 0x2 3044 3045 /* 3046 * Share or mount a dataset. 3047 */ 3048 static int 3049 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol, 3050 boolean_t explicit, const char *options) 3051 { 3052 char mountpoint[ZFS_MAXPROPLEN]; 3053 char shareopts[ZFS_MAXPROPLEN]; 3054 char smbshareopts[ZFS_MAXPROPLEN]; 3055 const char *cmdname = op == OP_SHARE ? "share" : "mount"; 3056 struct mnttab mnt; 3057 uint64_t zoned, canmount; 3058 zfs_type_t type = zfs_get_type(zhp); 3059 boolean_t shared_nfs, shared_smb; 3060 3061 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)); 3062 3063 if (type == ZFS_TYPE_FILESYSTEM) { 3064 /* 3065 * Check to make sure we can mount/share this dataset. If we 3066 * are in the global zone and the filesystem is exported to a 3067 * local zone, or if we are in a local zone and the 3068 * filesystem is not exported, then it is an error. 3069 */ 3070 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 3071 3072 if (zoned && getzoneid() == GLOBAL_ZONEID) { 3073 if (!explicit) 3074 return (0); 3075 3076 (void) fprintf(stderr, gettext("cannot %s '%s': " 3077 "dataset is exported to a local zone\n"), cmdname, 3078 zfs_get_name(zhp)); 3079 return (1); 3080 3081 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) { 3082 if (!explicit) 3083 return (0); 3084 3085 (void) fprintf(stderr, gettext("cannot %s '%s': " 3086 "permission denied\n"), cmdname, 3087 zfs_get_name(zhp)); 3088 return (1); 3089 } 3090 3091 /* 3092 * Ignore any filesystems which don't apply to us. This 3093 * includes those with a legacy mountpoint, or those with 3094 * legacy share options. 3095 */ 3096 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 3097 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0); 3098 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts, 3099 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3100 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts, 3101 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0); 3102 3103 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 && 3104 strcmp(smbshareopts, "off") == 0) { 3105 if (!explicit) 3106 return (0); 3107 3108 (void) fprintf(stderr, gettext("cannot share '%s': " 3109 "legacy share\n"), zfs_get_name(zhp)); 3110 (void) fprintf(stderr, gettext("use share(1M) to " 3111 "share this filesystem, or set " 3112 "sharenfs property on\n")); 3113 return (1); 3114 } 3115 3116 /* 3117 * We cannot share or mount legacy filesystems. If the 3118 * shareopts is non-legacy but the mountpoint is legacy, we 3119 * treat it as a legacy share. 3120 */ 3121 if (strcmp(mountpoint, "legacy") == 0) { 3122 if (!explicit) 3123 return (0); 3124 3125 (void) fprintf(stderr, gettext("cannot %s '%s': " 3126 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp)); 3127 (void) fprintf(stderr, gettext("use %s(1M) to " 3128 "%s this filesystem\n"), cmdname, cmdname); 3129 return (1); 3130 } 3131 3132 if (strcmp(mountpoint, "none") == 0) { 3133 if (!explicit) 3134 return (0); 3135 3136 (void) fprintf(stderr, gettext("cannot %s '%s': no " 3137 "mountpoint set\n"), cmdname, zfs_get_name(zhp)); 3138 return (1); 3139 } 3140 3141 /* 3142 * canmount explicit outcome 3143 * on no pass through 3144 * on yes pass through 3145 * off no return 0 3146 * off yes display error, return 1 3147 * noauto no return 0 3148 * noauto yes pass through 3149 */ 3150 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 3151 if (canmount == ZFS_CANMOUNT_OFF) { 3152 if (!explicit) 3153 return (0); 3154 3155 (void) fprintf(stderr, gettext("cannot %s '%s': " 3156 "'canmount' property is set to 'off'\n"), cmdname, 3157 zfs_get_name(zhp)); 3158 return (1); 3159 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) { 3160 return (0); 3161 } 3162 3163 /* 3164 * At this point, we have verified that the mountpoint and/or 3165 * shareopts are appropriate for auto management. If the 3166 * filesystem is already mounted or shared, return (failing 3167 * for explicit requests); otherwise mount or share the 3168 * filesystem. 3169 */ 3170 switch (op) { 3171 case OP_SHARE: 3172 3173 shared_nfs = zfs_is_shared_nfs(zhp, NULL); 3174 shared_smb = zfs_is_shared_smb(zhp, NULL); 3175 3176 if (shared_nfs && shared_smb || 3177 (shared_nfs && strcmp(shareopts, "on") == 0 && 3178 strcmp(smbshareopts, "off") == 0) || 3179 (shared_smb && strcmp(smbshareopts, "on") == 0 && 3180 strcmp(shareopts, "off") == 0)) { 3181 if (!explicit) 3182 return (0); 3183 3184 (void) fprintf(stderr, gettext("cannot share " 3185 "'%s': filesystem already shared\n"), 3186 zfs_get_name(zhp)); 3187 return (1); 3188 } 3189 3190 if (!zfs_is_mounted(zhp, NULL) && 3191 zfs_mount(zhp, NULL, 0) != 0) 3192 return (1); 3193 3194 if (protocol == NULL) { 3195 if (zfs_shareall(zhp) != 0) 3196 return (1); 3197 } else if (strcmp(protocol, "nfs") == 0) { 3198 if (zfs_share_nfs(zhp)) 3199 return (1); 3200 } else if (strcmp(protocol, "smb") == 0) { 3201 if (zfs_share_smb(zhp)) 3202 return (1); 3203 } else { 3204 (void) fprintf(stderr, gettext("cannot share " 3205 "'%s': invalid share type '%s' " 3206 "specified\n"), 3207 zfs_get_name(zhp), protocol); 3208 return (1); 3209 } 3210 3211 break; 3212 3213 case OP_MOUNT: 3214 if (options == NULL) 3215 mnt.mnt_mntopts = ""; 3216 else 3217 mnt.mnt_mntopts = (char *)options; 3218 3219 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) && 3220 zfs_is_mounted(zhp, NULL)) { 3221 if (!explicit) 3222 return (0); 3223 3224 (void) fprintf(stderr, gettext("cannot mount " 3225 "'%s': filesystem already mounted\n"), 3226 zfs_get_name(zhp)); 3227 return (1); 3228 } 3229 3230 if (zfs_mount(zhp, options, flags) != 0) 3231 return (1); 3232 break; 3233 } 3234 } else { 3235 assert(op == OP_SHARE); 3236 3237 /* 3238 * Ignore any volumes that aren't shared. 3239 */ 3240 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts, 3241 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3242 3243 if (strcmp(shareopts, "off") == 0) { 3244 if (!explicit) 3245 return (0); 3246 3247 (void) fprintf(stderr, gettext("cannot share '%s': " 3248 "'shareiscsi' property not set\n"), 3249 zfs_get_name(zhp)); 3250 (void) fprintf(stderr, gettext("set 'shareiscsi' " 3251 "property or use iscsitadm(1M) to share this " 3252 "volume\n")); 3253 return (1); 3254 } 3255 3256 if (zfs_is_shared_iscsi(zhp)) { 3257 if (!explicit) 3258 return (0); 3259 3260 (void) fprintf(stderr, gettext("cannot share " 3261 "'%s': volume already shared\n"), 3262 zfs_get_name(zhp)); 3263 return (1); 3264 } 3265 3266 if (zfs_share_iscsi(zhp) != 0) 3267 return (1); 3268 } 3269 3270 return (0); 3271 } 3272 3273 /* 3274 * Reports progress in the form "(current/total)". Not thread-safe. 3275 */ 3276 static void 3277 report_mount_progress(int current, int total) 3278 { 3279 static int len; 3280 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b" 3281 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"; 3282 static time_t last_progress_time; 3283 time_t now = time(NULL); 3284 3285 /* report 1..n instead of 0..n-1 */ 3286 ++current; 3287 3288 /* display header if we're here for the first time */ 3289 if (current == 1) { 3290 (void) printf(gettext("Mounting ZFS filesystems: ")); 3291 len = 0; 3292 } else if (current != total && last_progress_time + MOUNT_TIME >= now) { 3293 /* too soon to report again */ 3294 return; 3295 } 3296 3297 last_progress_time = now; 3298 3299 /* back up to prepare for overwriting */ 3300 if (len) 3301 (void) printf("%*.*s", len, len, reverse); 3302 3303 /* We put a newline at the end if this is the last one. */ 3304 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : ""); 3305 (void) fflush(stdout); 3306 } 3307 3308 static void 3309 append_options(char *mntopts, char *newopts) 3310 { 3311 int len = strlen(mntopts); 3312 3313 /* original length plus new string to append plus 1 for the comma */ 3314 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) { 3315 (void) fprintf(stderr, gettext("the opts argument for " 3316 "'%c' option is too long (more than %d chars)\n"), 3317 "-o", MNT_LINE_MAX); 3318 usage(B_FALSE); 3319 } 3320 3321 if (*mntopts) 3322 mntopts[len++] = ','; 3323 3324 (void) strcpy(&mntopts[len], newopts); 3325 } 3326 3327 static int 3328 share_mount(int op, int argc, char **argv) 3329 { 3330 int do_all = 0; 3331 boolean_t verbose = B_FALSE; 3332 int c, ret = 0; 3333 char *options = NULL; 3334 int types, flags = 0; 3335 3336 /* check options */ 3337 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a")) 3338 != -1) { 3339 switch (c) { 3340 case 'a': 3341 do_all = 1; 3342 break; 3343 case 'v': 3344 verbose = B_TRUE; 3345 break; 3346 case 'o': 3347 if (*optarg == '\0') { 3348 (void) fprintf(stderr, gettext("empty mount " 3349 "options (-o) specified\n")); 3350 usage(B_FALSE); 3351 } 3352 3353 if (options == NULL) 3354 options = safe_malloc(MNT_LINE_MAX + 1); 3355 3356 /* option validation is done later */ 3357 append_options(options, optarg); 3358 break; 3359 3360 case 'O': 3361 flags |= MS_OVERLAY; 3362 break; 3363 case ':': 3364 (void) fprintf(stderr, gettext("missing argument for " 3365 "'%c' option\n"), optopt); 3366 usage(B_FALSE); 3367 break; 3368 case '?': 3369 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3370 optopt); 3371 usage(B_FALSE); 3372 } 3373 } 3374 3375 argc -= optind; 3376 argv += optind; 3377 3378 /* check number of arguments */ 3379 if (do_all) { 3380 zfs_handle_t **dslist = NULL; 3381 size_t i, count = 0; 3382 char *protocol = NULL; 3383 3384 if (op == OP_MOUNT) { 3385 types = ZFS_TYPE_FILESYSTEM; 3386 } else if (argc > 0) { 3387 if (strcmp(argv[0], "nfs") == 0 || 3388 strcmp(argv[0], "smb") == 0) { 3389 types = ZFS_TYPE_FILESYSTEM; 3390 } else if (strcmp(argv[0], "iscsi") == 0) { 3391 types = ZFS_TYPE_VOLUME; 3392 } else { 3393 (void) fprintf(stderr, gettext("share type " 3394 "must be 'nfs', 'smb' or 'iscsi'\n")); 3395 usage(B_FALSE); 3396 } 3397 protocol = argv[0]; 3398 argc--; 3399 argv++; 3400 } else { 3401 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME; 3402 } 3403 3404 if (argc != 0) { 3405 (void) fprintf(stderr, gettext("too many arguments\n")); 3406 usage(B_FALSE); 3407 } 3408 3409 get_all_datasets(types, &dslist, &count, verbose); 3410 3411 if (count == 0) 3412 return (0); 3413 3414 qsort(dslist, count, sizeof (void *), dataset_cmp); 3415 3416 for (i = 0; i < count; i++) { 3417 if (verbose) 3418 report_mount_progress(i, count); 3419 3420 if (share_mount_one(dslist[i], op, flags, protocol, 3421 B_FALSE, options) != 0) 3422 ret = 1; 3423 zfs_close(dslist[i]); 3424 } 3425 3426 free(dslist); 3427 } else if (argc == 0) { 3428 struct mnttab entry; 3429 3430 if ((op == OP_SHARE) || (options != NULL)) { 3431 (void) fprintf(stderr, gettext("missing filesystem " 3432 "argument (specify -a for all)\n")); 3433 usage(B_FALSE); 3434 } 3435 3436 /* 3437 * When mount is given no arguments, go through /etc/mnttab and 3438 * display any active ZFS mounts. We hide any snapshots, since 3439 * they are controlled automatically. 3440 */ 3441 rewind(mnttab_file); 3442 while (getmntent(mnttab_file, &entry) == 0) { 3443 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 || 3444 strchr(entry.mnt_special, '@') != NULL) 3445 continue; 3446 3447 (void) printf("%-30s %s\n", entry.mnt_special, 3448 entry.mnt_mountp); 3449 } 3450 3451 } else { 3452 zfs_handle_t *zhp; 3453 3454 types = ZFS_TYPE_FILESYSTEM; 3455 if (op == OP_SHARE) 3456 types |= ZFS_TYPE_VOLUME; 3457 3458 if (argc > 1) { 3459 (void) fprintf(stderr, 3460 gettext("too many arguments\n")); 3461 usage(B_FALSE); 3462 } 3463 3464 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) { 3465 ret = 1; 3466 } else { 3467 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE, 3468 options); 3469 zfs_close(zhp); 3470 } 3471 } 3472 3473 return (ret); 3474 } 3475 3476 /* 3477 * zfs mount -a [nfs | iscsi] 3478 * zfs mount filesystem 3479 * 3480 * Mount all filesystems, or mount the given filesystem. 3481 */ 3482 static int 3483 zfs_do_mount(int argc, char **argv) 3484 { 3485 return (share_mount(OP_MOUNT, argc, argv)); 3486 } 3487 3488 /* 3489 * zfs share -a [nfs | iscsi | smb] 3490 * zfs share filesystem 3491 * 3492 * Share all filesystems, or share the given filesystem. 3493 */ 3494 static int 3495 zfs_do_share(int argc, char **argv) 3496 { 3497 return (share_mount(OP_SHARE, argc, argv)); 3498 } 3499 3500 typedef struct unshare_unmount_node { 3501 zfs_handle_t *un_zhp; 3502 char *un_mountp; 3503 uu_avl_node_t un_avlnode; 3504 } unshare_unmount_node_t; 3505 3506 /* ARGSUSED */ 3507 static int 3508 unshare_unmount_compare(const void *larg, const void *rarg, void *unused) 3509 { 3510 const unshare_unmount_node_t *l = larg; 3511 const unshare_unmount_node_t *r = rarg; 3512 3513 return (strcmp(l->un_mountp, r->un_mountp)); 3514 } 3515 3516 /* 3517 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an 3518 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem, 3519 * and unmount it appropriately. 3520 */ 3521 static int 3522 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual) 3523 { 3524 zfs_handle_t *zhp; 3525 int ret; 3526 struct stat64 statbuf; 3527 struct extmnttab entry; 3528 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount"; 3529 ino_t path_inode; 3530 3531 /* 3532 * Search for the path in /etc/mnttab. Rather than looking for the 3533 * specific path, which can be fooled by non-standard paths (i.e. ".." 3534 * or "//"), we stat() the path and search for the corresponding 3535 * (major,minor) device pair. 3536 */ 3537 if (stat64(path, &statbuf) != 0) { 3538 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3539 cmdname, path, strerror(errno)); 3540 return (1); 3541 } 3542 path_inode = statbuf.st_ino; 3543 3544 /* 3545 * Search for the given (major,minor) pair in the mount table. 3546 */ 3547 rewind(mnttab_file); 3548 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) { 3549 if (entry.mnt_major == major(statbuf.st_dev) && 3550 entry.mnt_minor == minor(statbuf.st_dev)) 3551 break; 3552 } 3553 if (ret != 0) { 3554 if (op == OP_SHARE) { 3555 (void) fprintf(stderr, gettext("cannot %s '%s': not " 3556 "currently mounted\n"), cmdname, path); 3557 return (1); 3558 } 3559 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"), 3560 path); 3561 if ((ret = umount2(path, flags)) != 0) 3562 (void) fprintf(stderr, gettext("%s: %s\n"), path, 3563 strerror(errno)); 3564 return (ret != 0); 3565 } 3566 3567 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) { 3568 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS " 3569 "filesystem\n"), cmdname, path); 3570 return (1); 3571 } 3572 3573 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3574 ZFS_TYPE_FILESYSTEM)) == NULL) 3575 return (1); 3576 3577 ret = 1; 3578 if (stat64(entry.mnt_mountp, &statbuf) != 0) { 3579 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3580 cmdname, path, strerror(errno)); 3581 goto out; 3582 } else if (statbuf.st_ino != path_inode) { 3583 (void) fprintf(stderr, gettext("cannot " 3584 "%s '%s': not a mountpoint\n"), cmdname, path); 3585 goto out; 3586 } 3587 3588 if (op == OP_SHARE) { 3589 char nfs_mnt_prop[ZFS_MAXPROPLEN]; 3590 char smbshare_prop[ZFS_MAXPROPLEN]; 3591 3592 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop, 3593 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0); 3594 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop, 3595 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0); 3596 3597 if (strcmp(nfs_mnt_prop, "off") == 0 && 3598 strcmp(smbshare_prop, "off") == 0) { 3599 (void) fprintf(stderr, gettext("cannot unshare " 3600 "'%s': legacy share\n"), path); 3601 (void) fprintf(stderr, gettext("use " 3602 "unshare(1M) to unshare this filesystem\n")); 3603 } else if (!zfs_is_shared(zhp)) { 3604 (void) fprintf(stderr, gettext("cannot unshare '%s': " 3605 "not currently shared\n"), path); 3606 } else { 3607 ret = zfs_unshareall_bypath(zhp, path); 3608 } 3609 } else { 3610 char mtpt_prop[ZFS_MAXPROPLEN]; 3611 3612 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop, 3613 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0); 3614 3615 if (is_manual) { 3616 ret = zfs_unmount(zhp, NULL, flags); 3617 } else if (strcmp(mtpt_prop, "legacy") == 0) { 3618 (void) fprintf(stderr, gettext("cannot unmount " 3619 "'%s': legacy mountpoint\n"), 3620 zfs_get_name(zhp)); 3621 (void) fprintf(stderr, gettext("use umount(1M) " 3622 "to unmount this filesystem\n")); 3623 } else { 3624 ret = zfs_unmountall(zhp, flags); 3625 } 3626 } 3627 3628 out: 3629 zfs_close(zhp); 3630 3631 return (ret != 0); 3632 } 3633 3634 /* 3635 * Generic callback for unsharing or unmounting a filesystem. 3636 */ 3637 static int 3638 unshare_unmount(int op, int argc, char **argv) 3639 { 3640 int do_all = 0; 3641 int flags = 0; 3642 int ret = 0; 3643 int types, c; 3644 zfs_handle_t *zhp; 3645 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN]; 3646 char sharesmb[ZFS_MAXPROPLEN]; 3647 3648 /* check options */ 3649 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) { 3650 switch (c) { 3651 case 'a': 3652 do_all = 1; 3653 break; 3654 case 'f': 3655 flags = MS_FORCE; 3656 break; 3657 case '?': 3658 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3659 optopt); 3660 usage(B_FALSE); 3661 } 3662 } 3663 3664 argc -= optind; 3665 argv += optind; 3666 3667 if (do_all) { 3668 /* 3669 * We could make use of zfs_for_each() to walk all datasets in 3670 * the system, but this would be very inefficient, especially 3671 * since we would have to linearly search /etc/mnttab for each 3672 * one. Instead, do one pass through /etc/mnttab looking for 3673 * zfs entries and call zfs_unmount() for each one. 3674 * 3675 * Things get a little tricky if the administrator has created 3676 * mountpoints beneath other ZFS filesystems. In this case, we 3677 * have to unmount the deepest filesystems first. To accomplish 3678 * this, we place all the mountpoints in an AVL tree sorted by 3679 * the special type (dataset name), and walk the result in 3680 * reverse to make sure to get any snapshots first. 3681 */ 3682 struct mnttab entry; 3683 uu_avl_pool_t *pool; 3684 uu_avl_t *tree; 3685 unshare_unmount_node_t *node; 3686 uu_avl_index_t idx; 3687 uu_avl_walk_t *walk; 3688 3689 if (argc != 0) { 3690 (void) fprintf(stderr, gettext("too many arguments\n")); 3691 usage(B_FALSE); 3692 } 3693 3694 if ((pool = uu_avl_pool_create("unmount_pool", 3695 sizeof (unshare_unmount_node_t), 3696 offsetof(unshare_unmount_node_t, un_avlnode), 3697 unshare_unmount_compare, 3698 UU_DEFAULT)) == NULL) { 3699 (void) fprintf(stderr, gettext("internal error: " 3700 "out of memory\n")); 3701 exit(1); 3702 } 3703 3704 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) { 3705 (void) fprintf(stderr, gettext("internal error: " 3706 "out of memory\n")); 3707 exit(1); 3708 } 3709 3710 rewind(mnttab_file); 3711 while (getmntent(mnttab_file, &entry) == 0) { 3712 3713 /* ignore non-ZFS entries */ 3714 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 3715 continue; 3716 3717 /* ignore snapshots */ 3718 if (strchr(entry.mnt_special, '@') != NULL) 3719 continue; 3720 3721 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3722 ZFS_TYPE_FILESYSTEM)) == NULL) { 3723 ret = 1; 3724 continue; 3725 } 3726 3727 switch (op) { 3728 case OP_SHARE: 3729 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3730 nfsiscsi_mnt_prop, 3731 sizeof (nfsiscsi_mnt_prop), 3732 NULL, NULL, 0, B_FALSE) == 0); 3733 if (strcmp(nfsiscsi_mnt_prop, "off") != 0) 3734 break; 3735 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3736 nfsiscsi_mnt_prop, 3737 sizeof (nfsiscsi_mnt_prop), 3738 NULL, NULL, 0, B_FALSE) == 0); 3739 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) 3740 continue; 3741 break; 3742 case OP_MOUNT: 3743 /* Ignore legacy mounts */ 3744 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, 3745 nfsiscsi_mnt_prop, 3746 sizeof (nfsiscsi_mnt_prop), 3747 NULL, NULL, 0, B_FALSE) == 0); 3748 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) 3749 continue; 3750 /* Ignore canmount=noauto mounts */ 3751 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == 3752 ZFS_CANMOUNT_NOAUTO) 3753 continue; 3754 default: 3755 break; 3756 } 3757 3758 node = safe_malloc(sizeof (unshare_unmount_node_t)); 3759 node->un_zhp = zhp; 3760 3761 if ((node->un_mountp = strdup(entry.mnt_mountp)) == 3762 NULL) { 3763 (void) fprintf(stderr, gettext("internal error:" 3764 " out of memory\n")); 3765 exit(1); 3766 } 3767 3768 uu_avl_node_init(node, &node->un_avlnode, pool); 3769 3770 if (uu_avl_find(tree, node, NULL, &idx) == NULL) { 3771 uu_avl_insert(tree, node, idx); 3772 } else { 3773 zfs_close(node->un_zhp); 3774 free(node->un_mountp); 3775 free(node); 3776 } 3777 } 3778 3779 /* 3780 * Walk the AVL tree in reverse, unmounting each filesystem and 3781 * removing it from the AVL tree in the process. 3782 */ 3783 if ((walk = uu_avl_walk_start(tree, 3784 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) { 3785 (void) fprintf(stderr, 3786 gettext("internal error: out of memory")); 3787 exit(1); 3788 } 3789 3790 while ((node = uu_avl_walk_next(walk)) != NULL) { 3791 uu_avl_remove(tree, node); 3792 3793 switch (op) { 3794 case OP_SHARE: 3795 if (zfs_unshareall_bypath(node->un_zhp, 3796 node->un_mountp) != 0) 3797 ret = 1; 3798 break; 3799 3800 case OP_MOUNT: 3801 if (zfs_unmount(node->un_zhp, 3802 node->un_mountp, flags) != 0) 3803 ret = 1; 3804 break; 3805 } 3806 3807 zfs_close(node->un_zhp); 3808 free(node->un_mountp); 3809 free(node); 3810 } 3811 3812 uu_avl_walk_end(walk); 3813 uu_avl_destroy(tree); 3814 uu_avl_pool_destroy(pool); 3815 3816 if (op == OP_SHARE) { 3817 /* 3818 * Finally, unshare any volumes shared via iSCSI. 3819 */ 3820 zfs_handle_t **dslist = NULL; 3821 size_t i, count = 0; 3822 3823 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count, 3824 B_FALSE); 3825 3826 if (count != 0) { 3827 qsort(dslist, count, sizeof (void *), 3828 dataset_cmp); 3829 3830 for (i = 0; i < count; i++) { 3831 if (zfs_unshare_iscsi(dslist[i]) != 0) 3832 ret = 1; 3833 zfs_close(dslist[i]); 3834 } 3835 3836 free(dslist); 3837 } 3838 } 3839 } else { 3840 if (argc != 1) { 3841 if (argc == 0) 3842 (void) fprintf(stderr, 3843 gettext("missing filesystem argument\n")); 3844 else 3845 (void) fprintf(stderr, 3846 gettext("too many arguments\n")); 3847 usage(B_FALSE); 3848 } 3849 3850 /* 3851 * We have an argument, but it may be a full path or a ZFS 3852 * filesystem. Pass full paths off to unmount_path() (shared by 3853 * manual_unmount), otherwise open the filesystem and pass to 3854 * zfs_unmount(). 3855 */ 3856 if (argv[0][0] == '/') 3857 return (unshare_unmount_path(op, argv[0], 3858 flags, B_FALSE)); 3859 3860 types = ZFS_TYPE_FILESYSTEM; 3861 if (op == OP_SHARE) 3862 types |= ZFS_TYPE_VOLUME; 3863 3864 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) 3865 return (1); 3866 3867 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 3868 verify(zfs_prop_get(zhp, op == OP_SHARE ? 3869 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, 3870 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL, 3871 NULL, 0, B_FALSE) == 0); 3872 3873 switch (op) { 3874 case OP_SHARE: 3875 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3876 nfsiscsi_mnt_prop, 3877 sizeof (nfsiscsi_mnt_prop), 3878 NULL, NULL, 0, B_FALSE) == 0); 3879 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3880 sharesmb, sizeof (sharesmb), NULL, NULL, 3881 0, B_FALSE) == 0); 3882 3883 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 && 3884 strcmp(sharesmb, "off") == 0) { 3885 (void) fprintf(stderr, gettext("cannot " 3886 "unshare '%s': legacy share\n"), 3887 zfs_get_name(zhp)); 3888 (void) fprintf(stderr, gettext("use " 3889 "unshare(1M) to unshare this " 3890 "filesystem\n")); 3891 ret = 1; 3892 } else if (!zfs_is_shared(zhp)) { 3893 (void) fprintf(stderr, gettext("cannot " 3894 "unshare '%s': not currently " 3895 "shared\n"), zfs_get_name(zhp)); 3896 ret = 1; 3897 } else if (zfs_unshareall(zhp) != 0) { 3898 ret = 1; 3899 } 3900 break; 3901 3902 case OP_MOUNT: 3903 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) { 3904 (void) fprintf(stderr, gettext("cannot " 3905 "unmount '%s': legacy " 3906 "mountpoint\n"), zfs_get_name(zhp)); 3907 (void) fprintf(stderr, gettext("use " 3908 "umount(1M) to unmount this " 3909 "filesystem\n")); 3910 ret = 1; 3911 } else if (!zfs_is_mounted(zhp, NULL)) { 3912 (void) fprintf(stderr, gettext("cannot " 3913 "unmount '%s': not currently " 3914 "mounted\n"), 3915 zfs_get_name(zhp)); 3916 ret = 1; 3917 } else if (zfs_unmountall(zhp, flags) != 0) { 3918 ret = 1; 3919 } 3920 break; 3921 } 3922 } else { 3923 assert(op == OP_SHARE); 3924 3925 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, 3926 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), 3927 NULL, NULL, 0, B_FALSE) == 0); 3928 3929 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) { 3930 (void) fprintf(stderr, gettext("cannot unshare " 3931 "'%s': 'shareiscsi' property not set\n"), 3932 zfs_get_name(zhp)); 3933 (void) fprintf(stderr, gettext("set " 3934 "'shareiscsi' property or use " 3935 "iscsitadm(1M) to share this volume\n")); 3936 ret = 1; 3937 } else if (!zfs_is_shared_iscsi(zhp)) { 3938 (void) fprintf(stderr, gettext("cannot " 3939 "unshare '%s': not currently shared\n"), 3940 zfs_get_name(zhp)); 3941 ret = 1; 3942 } else if (zfs_unshare_iscsi(zhp) != 0) { 3943 ret = 1; 3944 } 3945 } 3946 3947 zfs_close(zhp); 3948 } 3949 3950 return (ret); 3951 } 3952 3953 /* 3954 * zfs unmount -a 3955 * zfs unmount filesystem 3956 * 3957 * Unmount all filesystems, or a specific ZFS filesystem. 3958 */ 3959 static int 3960 zfs_do_unmount(int argc, char **argv) 3961 { 3962 return (unshare_unmount(OP_MOUNT, argc, argv)); 3963 } 3964 3965 /* 3966 * zfs unshare -a 3967 * zfs unshare filesystem 3968 * 3969 * Unshare all filesystems, or a specific ZFS filesystem. 3970 */ 3971 static int 3972 zfs_do_unshare(int argc, char **argv) 3973 { 3974 return (unshare_unmount(OP_SHARE, argc, argv)); 3975 } 3976 3977 /* 3978 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is 3979 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'. 3980 */ 3981 static int 3982 manual_mount(int argc, char **argv) 3983 { 3984 zfs_handle_t *zhp; 3985 char mountpoint[ZFS_MAXPROPLEN]; 3986 char mntopts[MNT_LINE_MAX] = { '\0' }; 3987 int ret; 3988 int c; 3989 int flags = 0; 3990 char *dataset, *path; 3991 3992 /* check options */ 3993 while ((c = getopt(argc, argv, ":mo:O")) != -1) { 3994 switch (c) { 3995 case 'o': 3996 (void) strlcpy(mntopts, optarg, sizeof (mntopts)); 3997 break; 3998 case 'O': 3999 flags |= MS_OVERLAY; 4000 break; 4001 case 'm': 4002 flags |= MS_NOMNTTAB; 4003 break; 4004 case ':': 4005 (void) fprintf(stderr, gettext("missing argument for " 4006 "'%c' option\n"), optopt); 4007 usage(B_FALSE); 4008 break; 4009 case '?': 4010 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 4011 optopt); 4012 (void) fprintf(stderr, gettext("usage: mount [-o opts] " 4013 "<path>\n")); 4014 return (2); 4015 } 4016 } 4017 4018 argc -= optind; 4019 argv += optind; 4020 4021 /* check that we only have two arguments */ 4022 if (argc != 2) { 4023 if (argc == 0) 4024 (void) fprintf(stderr, gettext("missing dataset " 4025 "argument\n")); 4026 else if (argc == 1) 4027 (void) fprintf(stderr, 4028 gettext("missing mountpoint argument\n")); 4029 else 4030 (void) fprintf(stderr, gettext("too many arguments\n")); 4031 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n"); 4032 return (2); 4033 } 4034 4035 dataset = argv[0]; 4036 path = argv[1]; 4037 4038 /* try to open the dataset */ 4039 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL) 4040 return (1); 4041 4042 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 4043 sizeof (mountpoint), NULL, NULL, 0, B_FALSE); 4044 4045 /* check for legacy mountpoint and complain appropriately */ 4046 ret = 0; 4047 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) { 4048 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS, 4049 NULL, 0, mntopts, sizeof (mntopts)) != 0) { 4050 (void) fprintf(stderr, gettext("mount failed: %s\n"), 4051 strerror(errno)); 4052 ret = 1; 4053 } 4054 } else { 4055 (void) fprintf(stderr, gettext("filesystem '%s' cannot be " 4056 "mounted using 'mount -F zfs'\n"), dataset); 4057 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' " 4058 "instead.\n"), path); 4059 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' " 4060 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n")); 4061 (void) fprintf(stderr, gettext("See zfs(1M) for more " 4062 "information.\n")); 4063 ret = 1; 4064 } 4065 4066 return (ret); 4067 } 4068 4069 /* 4070 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow 4071 * unmounts of non-legacy filesystems, as this is the dominant administrative 4072 * interface. 4073 */ 4074 static int 4075 manual_unmount(int argc, char **argv) 4076 { 4077 int flags = 0; 4078 int c; 4079 4080 /* check options */ 4081 while ((c = getopt(argc, argv, "f")) != -1) { 4082 switch (c) { 4083 case 'f': 4084 flags = MS_FORCE; 4085 break; 4086 case '?': 4087 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 4088 optopt); 4089 (void) fprintf(stderr, gettext("usage: unmount [-f] " 4090 "<path>\n")); 4091 return (2); 4092 } 4093 } 4094 4095 argc -= optind; 4096 argv += optind; 4097 4098 /* check arguments */ 4099 if (argc != 1) { 4100 if (argc == 0) 4101 (void) fprintf(stderr, gettext("missing path " 4102 "argument\n")); 4103 else 4104 (void) fprintf(stderr, gettext("too many arguments\n")); 4105 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n")); 4106 return (2); 4107 } 4108 4109 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE)); 4110 } 4111 4112 static int 4113 volcheck(zpool_handle_t *zhp, void *data) 4114 { 4115 boolean_t isinit = *((boolean_t *)data); 4116 4117 if (isinit) 4118 return (zpool_create_zvol_links(zhp)); 4119 else 4120 return (zpool_remove_zvol_links(zhp)); 4121 } 4122 4123 /* 4124 * Iterate over all pools in the system and either create or destroy /dev/zvol 4125 * links, depending on the value of 'isinit'. 4126 */ 4127 static int 4128 do_volcheck(boolean_t isinit) 4129 { 4130 return (zpool_iter(g_zfs, volcheck, &isinit) ? 1 : 0); 4131 } 4132 4133 static int 4134 find_command_idx(char *command, int *idx) 4135 { 4136 int i; 4137 4138 for (i = 0; i < NCOMMAND; i++) { 4139 if (command_table[i].name == NULL) 4140 continue; 4141 4142 if (strcmp(command, command_table[i].name) == 0) { 4143 *idx = i; 4144 return (0); 4145 } 4146 } 4147 return (1); 4148 } 4149 4150 int 4151 main(int argc, char **argv) 4152 { 4153 int ret; 4154 int i; 4155 char *progname; 4156 char *cmdname; 4157 4158 (void) setlocale(LC_ALL, ""); 4159 (void) textdomain(TEXT_DOMAIN); 4160 4161 opterr = 0; 4162 4163 if ((g_zfs = libzfs_init()) == NULL) { 4164 (void) fprintf(stderr, gettext("internal error: failed to " 4165 "initialize ZFS library\n")); 4166 return (1); 4167 } 4168 4169 zpool_set_history_str("zfs", argc, argv, history_str); 4170 verify(zpool_stage_history(g_zfs, history_str) == 0); 4171 4172 libzfs_print_on_error(g_zfs, B_TRUE); 4173 4174 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) { 4175 (void) fprintf(stderr, gettext("internal error: unable to " 4176 "open %s\n"), MNTTAB); 4177 return (1); 4178 } 4179 4180 /* 4181 * This command also doubles as the /etc/fs mount and unmount program. 4182 * Determine if we should take this behavior based on argv[0]. 4183 */ 4184 progname = basename(argv[0]); 4185 if (strcmp(progname, "mount") == 0) { 4186 ret = manual_mount(argc, argv); 4187 } else if (strcmp(progname, "umount") == 0) { 4188 ret = manual_unmount(argc, argv); 4189 } else { 4190 /* 4191 * Make sure the user has specified some command. 4192 */ 4193 if (argc < 2) { 4194 (void) fprintf(stderr, gettext("missing command\n")); 4195 usage(B_FALSE); 4196 } 4197 4198 cmdname = argv[1]; 4199 4200 /* 4201 * The 'umount' command is an alias for 'unmount' 4202 */ 4203 if (strcmp(cmdname, "umount") == 0) 4204 cmdname = "unmount"; 4205 4206 /* 4207 * The 'recv' command is an alias for 'receive' 4208 */ 4209 if (strcmp(cmdname, "recv") == 0) 4210 cmdname = "receive"; 4211 4212 /* 4213 * Special case '-?' 4214 */ 4215 if (strcmp(cmdname, "-?") == 0) 4216 usage(B_TRUE); 4217 4218 /* 4219 * 'volinit' and 'volfini' do not appear in the usage message, 4220 * so we have to special case them here. 4221 */ 4222 if (strcmp(cmdname, "volinit") == 0) 4223 return (do_volcheck(B_TRUE)); 4224 else if (strcmp(cmdname, "volfini") == 0) 4225 return (do_volcheck(B_FALSE)); 4226 4227 /* 4228 * Run the appropriate command. 4229 */ 4230 libzfs_mnttab_cache(g_zfs, B_TRUE); 4231 if (find_command_idx(cmdname, &i) == 0) { 4232 current_command = &command_table[i]; 4233 ret = command_table[i].func(argc - 1, argv + 1); 4234 } else if (strchr(cmdname, '=') != NULL) { 4235 verify(find_command_idx("set", &i) == 0); 4236 current_command = &command_table[i]; 4237 ret = command_table[i].func(argc, argv); 4238 } else { 4239 (void) fprintf(stderr, gettext("unrecognized " 4240 "command '%s'\n"), cmdname); 4241 usage(B_FALSE); 4242 } 4243 libzfs_mnttab_cache(g_zfs, B_FALSE); 4244 } 4245 4246 (void) fclose(mnttab_file); 4247 4248 libzfs_fini(g_zfs); 4249 4250 /* 4251 * The 'ZFS_ABORT' environment variable causes us to dump core on exit 4252 * for the purposes of running ::findleaks. 4253 */ 4254 if (getenv("ZFS_ABORT") != NULL) { 4255 (void) printf("dumping core by request\n"); 4256 abort(); 4257 } 4258 4259 return (ret); 4260 } 4261