1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <assert.h> 30 #include <ctype.h> 31 #include <errno.h> 32 #include <libgen.h> 33 #include <libintl.h> 34 #include <libuutil.h> 35 #include <libnvpair.h> 36 #include <locale.h> 37 #include <stddef.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <strings.h> 41 #include <unistd.h> 42 #include <fcntl.h> 43 #include <zone.h> 44 #include <sys/mkdev.h> 45 #include <sys/mntent.h> 46 #include <sys/mnttab.h> 47 #include <sys/mount.h> 48 #include <sys/stat.h> 49 #include <sys/avl.h> 50 51 #include <libzfs.h> 52 #include <libuutil.h> 53 54 #include "zfs_iter.h" 55 #include "zfs_util.h" 56 57 libzfs_handle_t *g_zfs; 58 59 static FILE *mnttab_file; 60 static char history_str[HIS_MAX_RECORD_LEN]; 61 62 static int zfs_do_clone(int argc, char **argv); 63 static int zfs_do_create(int argc, char **argv); 64 static int zfs_do_destroy(int argc, char **argv); 65 static int zfs_do_get(int argc, char **argv); 66 static int zfs_do_inherit(int argc, char **argv); 67 static int zfs_do_list(int argc, char **argv); 68 static int zfs_do_mount(int argc, char **argv); 69 static int zfs_do_rename(int argc, char **argv); 70 static int zfs_do_rollback(int argc, char **argv); 71 static int zfs_do_set(int argc, char **argv); 72 static int zfs_do_upgrade(int argc, char **argv); 73 static int zfs_do_snapshot(int argc, char **argv); 74 static int zfs_do_unmount(int argc, char **argv); 75 static int zfs_do_share(int argc, char **argv); 76 static int zfs_do_unshare(int argc, char **argv); 77 static int zfs_do_send(int argc, char **argv); 78 static int zfs_do_receive(int argc, char **argv); 79 static int zfs_do_promote(int argc, char **argv); 80 static int zfs_do_allow(int argc, char **argv); 81 static int zfs_do_unallow(int argc, char **argv); 82 83 /* 84 * These libumem hooks provide a reasonable set of defaults for the allocator's 85 * debugging facilities. 86 */ 87 const char * 88 _umem_debug_init(void) 89 { 90 return ("default,verbose"); /* $UMEM_DEBUG setting */ 91 } 92 93 const char * 94 _umem_logging_init(void) 95 { 96 return ("fail,contents"); /* $UMEM_LOGGING setting */ 97 } 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] <snapshot> " 177 "<filesystem|volume>\n")); 178 case HELP_CREATE: 179 return (gettext("\tcreate [-p] [-o property=value] ... " 180 "<filesystem>\n" 181 "\tcreate [-ps] [-b blocksize] [-o property=value] ... " 182 "-V <size> <volume>\n")); 183 case HELP_DESTROY: 184 return (gettext("\tdestroy [-rRf] " 185 "<filesystem|volume|snapshot>\n")); 186 case HELP_GET: 187 return (gettext("\tget [-rHp] [-o field[,...]] " 188 "[-s source[,...]]\n" 189 "\t <\"all\" | property[,...]> " 190 "[filesystem|volume|snapshot] ...\n")); 191 case HELP_INHERIT: 192 return (gettext("\tinherit [-r] <property> " 193 "<filesystem|volume> ...\n")); 194 case HELP_UPGRADE: 195 return (gettext("\tupgrade [-v]\n" 196 "\tupgrade [-r] [-V version] <-a | filesystem ...>\n")); 197 case HELP_LIST: 198 return (gettext("\tlist [-rH] [-o property[,...]] " 199 "[-t type[,...]] [-s property] ...\n" 200 "\t [-S property] ... " 201 "[filesystem|volume|snapshot] ...\n")); 202 case HELP_MOUNT: 203 return (gettext("\tmount\n" 204 "\tmount [-vO] [-o opts] <-a | filesystem>\n")); 205 case HELP_PROMOTE: 206 return (gettext("\tpromote <clone-filesystem>\n")); 207 case HELP_RECEIVE: 208 return (gettext("\treceive [-vnF] <filesystem|volume|" 209 "snapshot>\n" 210 "\treceive [-vnF] -d <filesystem>\n")); 211 case HELP_RENAME: 212 return (gettext("\trename <filesystem|volume|snapshot> " 213 "<filesystem|volume|snapshot>\n" 214 "\trename -p <filesystem|volume> <filesystem|volume>\n" 215 "\trename -r <snapshot> <snapshot>")); 216 case HELP_ROLLBACK: 217 return (gettext("\trollback [-rRf] <snapshot>\n")); 218 case HELP_SEND: 219 return (gettext("\tsend [-R] [-[iI] snapshot] <snapshot>\n")); 220 case HELP_SET: 221 return (gettext("\tset <property=value> " 222 "<filesystem|volume> ...\n")); 223 case HELP_SHARE: 224 return (gettext("\tshare <-a | filesystem>\n")); 225 case HELP_SNAPSHOT: 226 return (gettext("\tsnapshot [-r] " 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%-14s ", zfs_prop_to_name(prop)); 285 286 if (prop == ZFS_PROP_CASE) 287 (void) fprintf(fp, "NO "); 288 else if (zfs_prop_readonly(prop)) 289 (void) fprintf(fp, " NO "); 290 else 291 (void) fprintf(fp, " YES "); 292 293 if (zfs_prop_inheritable(prop)) 294 (void) fprintf(fp, " YES "); 295 else 296 (void) fprintf(fp, " NO "); 297 298 if (zfs_prop_values(prop) == NULL) 299 (void) fprintf(fp, "-\n"); 300 else 301 (void) fprintf(fp, "%s\n", zfs_prop_values(prop)); 302 303 return (ZPROP_CONT); 304 } 305 306 /* 307 * Display usage message. If we're inside a command, display only the usage for 308 * that command. Otherwise, iterate over the entire command table and display 309 * a complete usage message. 310 */ 311 static void 312 usage(boolean_t requested) 313 { 314 int i; 315 boolean_t show_properties = B_FALSE; 316 boolean_t show_permissions = B_FALSE; 317 FILE *fp = requested ? stdout : stderr; 318 319 if (current_command == NULL) { 320 321 (void) fprintf(fp, gettext("usage: zfs command args ...\n")); 322 (void) fprintf(fp, 323 gettext("where 'command' is one of the following:\n\n")); 324 325 for (i = 0; i < NCOMMAND; i++) { 326 if (command_table[i].name == NULL) 327 (void) fprintf(fp, "\n"); 328 else 329 (void) fprintf(fp, "%s", 330 get_usage(command_table[i].usage)); 331 } 332 333 (void) fprintf(fp, gettext("\nEach dataset is of the form: " 334 "pool/[dataset/]*dataset[@name]\n")); 335 } else { 336 (void) fprintf(fp, gettext("usage:\n")); 337 (void) fprintf(fp, "%s", get_usage(current_command->usage)); 338 } 339 340 if (current_command != NULL && 341 (strcmp(current_command->name, "set") == 0 || 342 strcmp(current_command->name, "get") == 0 || 343 strcmp(current_command->name, "inherit") == 0 || 344 strcmp(current_command->name, "list") == 0)) 345 show_properties = B_TRUE; 346 347 if (current_command != NULL && 348 (strcmp(current_command->name, "allow") == 0 || 349 strcmp(current_command->name, "unallow") == 0)) 350 show_permissions = B_TRUE; 351 352 if (show_properties) { 353 354 (void) fprintf(fp, 355 gettext("\nThe following properties are supported:\n")); 356 357 (void) fprintf(fp, "\n\t%-14s %s %s %s\n\n", 358 "PROPERTY", "EDIT", "INHERIT", "VALUES"); 359 360 /* Iterate over all properties */ 361 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE, 362 ZFS_TYPE_DATASET); 363 364 (void) fprintf(fp, gettext("\nSizes are specified in bytes " 365 "with standard units such as K, M, G, etc.\n")); 366 (void) fprintf(fp, gettext("\n\nUser-defined properties can " 367 "be specified by using a name containing a colon (:).\n")); 368 369 } else if (show_permissions) { 370 (void) fprintf(fp, 371 gettext("\nThe following permissions are supported:\n")); 372 373 zfs_deleg_permissions(); 374 } else { 375 /* 376 * TRANSLATION NOTE: 377 * "zfs set|get" must not be localised this is the 378 * command name and arguments. 379 */ 380 381 (void) fprintf(fp, 382 gettext("\nFor the property list, run: zfs set|get\n")); 383 384 (void) fprintf(fp, 385 gettext("\nFor the delegated permission list, run:" 386 " zfs allow|unallow\n")); 387 } 388 389 /* 390 * See comments at end of main(). 391 */ 392 if (getenv("ZFS_ABORT") != NULL) { 393 (void) printf("dumping core by request\n"); 394 abort(); 395 } 396 397 exit(requested ? 0 : 2); 398 } 399 400 /* 401 * zfs clone [-p] <snap> <fs | vol> 402 * 403 * Given an existing dataset, create a writable copy whose initial contents 404 * are the same as the source. The newly created dataset maintains a 405 * dependency on the original; the original cannot be destroyed so long as 406 * the clone exists. 407 * 408 * The '-p' flag creates all the non-existing ancestors of the target first. 409 */ 410 static int 411 zfs_do_clone(int argc, char **argv) 412 { 413 zfs_handle_t *zhp; 414 boolean_t parents = B_FALSE; 415 int ret; 416 int c; 417 418 /* check options */ 419 while ((c = getopt(argc, argv, "p")) != -1) { 420 switch (c) { 421 case 'p': 422 parents = B_TRUE; 423 break; 424 case '?': 425 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 426 optopt); 427 usage(B_FALSE); 428 } 429 } 430 431 argc -= optind; 432 argv += optind; 433 434 /* check number of arguments */ 435 if (argc < 1) { 436 (void) fprintf(stderr, gettext("missing source dataset " 437 "argument\n")); 438 usage(B_FALSE); 439 } 440 if (argc < 2) { 441 (void) fprintf(stderr, gettext("missing target dataset " 442 "argument\n")); 443 usage(B_FALSE); 444 } 445 if (argc > 2) { 446 (void) fprintf(stderr, gettext("too many arguments\n")); 447 usage(B_FALSE); 448 } 449 450 /* open the source dataset */ 451 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 452 return (1); 453 454 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM | 455 ZFS_TYPE_VOLUME)) { 456 /* 457 * Now create the ancestors of the target dataset. If the 458 * target already exists and '-p' option was used we should not 459 * complain. 460 */ 461 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | 462 ZFS_TYPE_VOLUME)) 463 return (0); 464 if (zfs_create_ancestors(g_zfs, argv[1]) != 0) 465 return (1); 466 } 467 468 /* pass to libzfs */ 469 ret = zfs_clone(zhp, argv[1], NULL); 470 471 /* create the mountpoint if necessary */ 472 if (ret == 0) { 473 zfs_handle_t *clone; 474 475 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET); 476 if (clone != NULL) { 477 if ((ret = zfs_mount(clone, NULL, 0)) == 0) 478 ret = zfs_share(clone); 479 zfs_close(clone); 480 } 481 } 482 483 zfs_close(zhp); 484 485 return (ret == 0 ? 0 : 1); 486 } 487 488 /* 489 * zfs create [-p] [-o prop=value] ... fs 490 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size 491 * 492 * Create a new dataset. This command can be used to create filesystems 493 * and volumes. Snapshot creation is handled by 'zfs snapshot'. 494 * For volumes, the user must specify a size to be used. 495 * 496 * The '-s' flag applies only to volumes, and indicates that we should not try 497 * to set the reservation for this volume. By default we set a reservation 498 * equal to the size for any volume. For pools with SPA_VERSION >= 499 * SPA_VERSION_REFRESERVATION, we set a refreservation instead. 500 * 501 * The '-p' flag creates all the non-existing ancestors of the target first. 502 */ 503 static int 504 zfs_do_create(int argc, char **argv) 505 { 506 zfs_type_t type = ZFS_TYPE_FILESYSTEM; 507 zfs_handle_t *zhp = NULL; 508 uint64_t volsize; 509 int c; 510 boolean_t noreserve = B_FALSE; 511 boolean_t bflag = B_FALSE; 512 boolean_t parents = B_FALSE; 513 int ret = 1; 514 nvlist_t *props = NULL; 515 uint64_t intval; 516 char *propname; 517 char *propval = NULL; 518 char *strval; 519 int canmount; 520 521 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 522 (void) fprintf(stderr, gettext("internal error: " 523 "out of memory\n")); 524 return (1); 525 } 526 527 /* check options */ 528 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) { 529 switch (c) { 530 case 'V': 531 type = ZFS_TYPE_VOLUME; 532 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 533 (void) fprintf(stderr, gettext("bad volume " 534 "size '%s': %s\n"), optarg, 535 libzfs_error_description(g_zfs)); 536 goto error; 537 } 538 539 if (nvlist_add_uint64(props, 540 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 541 intval) != 0) { 542 (void) fprintf(stderr, gettext("internal " 543 "error: out of memory\n")); 544 goto error; 545 } 546 volsize = intval; 547 break; 548 case 'p': 549 parents = B_TRUE; 550 break; 551 case 'b': 552 bflag = B_TRUE; 553 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 554 (void) fprintf(stderr, gettext("bad volume " 555 "block size '%s': %s\n"), optarg, 556 libzfs_error_description(g_zfs)); 557 goto error; 558 } 559 560 if (nvlist_add_uint64(props, 561 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 562 intval) != 0) { 563 (void) fprintf(stderr, gettext("internal " 564 "error: out of memory\n")); 565 goto error; 566 } 567 break; 568 case 'o': 569 propname = optarg; 570 if ((propval = strchr(propname, '=')) == NULL) { 571 (void) fprintf(stderr, gettext("missing " 572 "'=' for -o option\n")); 573 goto error; 574 } 575 *propval = '\0'; 576 propval++; 577 if (nvlist_lookup_string(props, propname, 578 &strval) == 0) { 579 (void) fprintf(stderr, gettext("property '%s' " 580 "specified multiple times\n"), propname); 581 goto error; 582 } 583 if (nvlist_add_string(props, propname, propval) != 0) { 584 (void) fprintf(stderr, gettext("internal " 585 "error: out of memory\n")); 586 goto error; 587 } 588 break; 589 case 's': 590 noreserve = B_TRUE; 591 break; 592 case ':': 593 (void) fprintf(stderr, gettext("missing size " 594 "argument\n")); 595 goto badusage; 596 break; 597 case '?': 598 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 599 optopt); 600 goto badusage; 601 } 602 } 603 604 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) { 605 (void) fprintf(stderr, gettext("'-s' and '-b' can only be " 606 "used when creating a volume\n")); 607 goto badusage; 608 } 609 610 argc -= optind; 611 argv += optind; 612 613 /* check number of arguments */ 614 if (argc == 0) { 615 (void) fprintf(stderr, gettext("missing %s argument\n"), 616 zfs_type_to_name(type)); 617 goto badusage; 618 } 619 if (argc > 1) { 620 (void) fprintf(stderr, gettext("too many arguments\n")); 621 goto badusage; 622 } 623 624 if (type == ZFS_TYPE_VOLUME && !noreserve) { 625 zpool_handle_t *zpool_handle; 626 uint64_t spa_version; 627 char *p; 628 zfs_prop_t resv_prop; 629 630 if (p = strchr(argv[0], '/')) 631 *p = '\0'; 632 zpool_handle = zpool_open(g_zfs, argv[0]); 633 if (p != NULL) 634 *p = '/'; 635 if (zpool_handle == NULL) 636 goto error; 637 spa_version = zpool_get_prop_int(zpool_handle, 638 ZPOOL_PROP_VERSION, NULL); 639 zpool_close(zpool_handle); 640 if (spa_version >= SPA_VERSION_REFRESERVATION) 641 resv_prop = ZFS_PROP_REFRESERVATION; 642 else 643 resv_prop = ZFS_PROP_RESERVATION; 644 645 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop), 646 &strval) != 0) { 647 if (nvlist_add_uint64(props, 648 zfs_prop_to_name(resv_prop), volsize) != 0) { 649 (void) fprintf(stderr, gettext("internal " 650 "error: out of memory\n")); 651 nvlist_free(props); 652 return (1); 653 } 654 } 655 } 656 657 if (parents && zfs_name_valid(argv[0], type)) { 658 /* 659 * Now create the ancestors of target dataset. If the target 660 * already exists and '-p' option was used we should not 661 * complain. 662 */ 663 if (zfs_dataset_exists(g_zfs, argv[0], type)) { 664 ret = 0; 665 goto error; 666 } 667 if (zfs_create_ancestors(g_zfs, argv[0]) != 0) 668 goto error; 669 } 670 671 /* pass to libzfs */ 672 if (zfs_create(g_zfs, argv[0], type, props) != 0) 673 goto error; 674 675 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 676 goto error; 677 /* 678 * if the user doesn't want the dataset automatically mounted, 679 * then skip the mount/share step 680 */ 681 682 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 683 684 /* 685 * Mount and/or share the new filesystem as appropriate. We provide a 686 * verbose error message to let the user know that their filesystem was 687 * in fact created, even if we failed to mount or share it. 688 */ 689 ret = 0; 690 if (canmount == ZFS_CANMOUNT_ON) { 691 if (zfs_mount(zhp, NULL, 0) != 0) { 692 (void) fprintf(stderr, gettext("filesystem " 693 "successfully created, but not mounted\n")); 694 ret = 1; 695 } else if (zfs_share(zhp) != 0) { 696 (void) fprintf(stderr, gettext("filesystem " 697 "successfully created, but not shared\n")); 698 ret = 1; 699 } 700 } 701 702 error: 703 if (zhp) 704 zfs_close(zhp); 705 nvlist_free(props); 706 return (ret); 707 badusage: 708 nvlist_free(props); 709 usage(B_FALSE); 710 return (2); 711 } 712 713 /* 714 * zfs destroy [-rf] <fs, snap, vol> 715 * 716 * -r Recursively destroy all children 717 * -R Recursively destroy all dependents, including clones 718 * -f Force unmounting of any dependents 719 * 720 * Destroys the given dataset. By default, it will unmount any filesystems, 721 * and refuse to destroy a dataset that has any dependents. A dependent can 722 * either be a child, or a clone of a child. 723 */ 724 typedef struct destroy_cbdata { 725 boolean_t cb_first; 726 int cb_force; 727 int cb_recurse; 728 int cb_error; 729 int cb_needforce; 730 int cb_doclones; 731 boolean_t cb_closezhp; 732 zfs_handle_t *cb_target; 733 char *cb_snapname; 734 } destroy_cbdata_t; 735 736 /* 737 * Check for any dependents based on the '-r' or '-R' flags. 738 */ 739 static int 740 destroy_check_dependent(zfs_handle_t *zhp, void *data) 741 { 742 destroy_cbdata_t *cbp = data; 743 const char *tname = zfs_get_name(cbp->cb_target); 744 const char *name = zfs_get_name(zhp); 745 746 if (strncmp(tname, name, strlen(tname)) == 0 && 747 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) { 748 /* 749 * This is a direct descendant, not a clone somewhere else in 750 * the hierarchy. 751 */ 752 if (cbp->cb_recurse) 753 goto out; 754 755 if (cbp->cb_first) { 756 (void) fprintf(stderr, gettext("cannot destroy '%s': " 757 "%s has children\n"), 758 zfs_get_name(cbp->cb_target), 759 zfs_type_to_name(zfs_get_type(cbp->cb_target))); 760 (void) fprintf(stderr, gettext("use '-r' to destroy " 761 "the following datasets:\n")); 762 cbp->cb_first = B_FALSE; 763 cbp->cb_error = 1; 764 } 765 766 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 767 } else { 768 /* 769 * This is a clone. We only want to report this if the '-r' 770 * wasn't specified, or the target is a snapshot. 771 */ 772 if (!cbp->cb_recurse && 773 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT) 774 goto out; 775 776 if (cbp->cb_first) { 777 (void) fprintf(stderr, gettext("cannot destroy '%s': " 778 "%s has dependent clones\n"), 779 zfs_get_name(cbp->cb_target), 780 zfs_type_to_name(zfs_get_type(cbp->cb_target))); 781 (void) fprintf(stderr, gettext("use '-R' to destroy " 782 "the following datasets:\n")); 783 cbp->cb_first = B_FALSE; 784 cbp->cb_error = 1; 785 } 786 787 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 788 } 789 790 out: 791 zfs_close(zhp); 792 return (0); 793 } 794 795 static int 796 destroy_callback(zfs_handle_t *zhp, void *data) 797 { 798 destroy_cbdata_t *cbp = data; 799 800 /* 801 * Ignore pools (which we've already flagged as an error before getting 802 * here. 803 */ 804 if (strchr(zfs_get_name(zhp), '/') == NULL && 805 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 806 zfs_close(zhp); 807 return (0); 808 } 809 810 /* 811 * Bail out on the first error. 812 */ 813 if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 || 814 zfs_destroy(zhp) != 0) { 815 zfs_close(zhp); 816 return (-1); 817 } 818 819 zfs_close(zhp); 820 return (0); 821 } 822 823 static int 824 destroy_snap_clones(zfs_handle_t *zhp, void *arg) 825 { 826 destroy_cbdata_t *cbp = arg; 827 char thissnap[MAXPATHLEN]; 828 zfs_handle_t *szhp; 829 boolean_t closezhp = cbp->cb_closezhp; 830 int rv; 831 832 (void) snprintf(thissnap, sizeof (thissnap), 833 "%s@%s", zfs_get_name(zhp), cbp->cb_snapname); 834 835 libzfs_print_on_error(g_zfs, B_FALSE); 836 szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT); 837 libzfs_print_on_error(g_zfs, B_TRUE); 838 if (szhp) { 839 /* 840 * Destroy any clones of this snapshot 841 */ 842 if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback, 843 cbp) != 0) { 844 zfs_close(szhp); 845 if (closezhp) 846 zfs_close(zhp); 847 return (-1); 848 } 849 zfs_close(szhp); 850 } 851 852 cbp->cb_closezhp = B_TRUE; 853 rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg); 854 if (closezhp) 855 zfs_close(zhp); 856 return (rv); 857 } 858 859 static int 860 zfs_do_destroy(int argc, char **argv) 861 { 862 destroy_cbdata_t cb = { 0 }; 863 int c; 864 zfs_handle_t *zhp; 865 char *cp; 866 867 /* check options */ 868 while ((c = getopt(argc, argv, "frR")) != -1) { 869 switch (c) { 870 case 'f': 871 cb.cb_force = 1; 872 break; 873 case 'r': 874 cb.cb_recurse = 1; 875 break; 876 case 'R': 877 cb.cb_recurse = 1; 878 cb.cb_doclones = 1; 879 break; 880 case '?': 881 default: 882 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 883 optopt); 884 usage(B_FALSE); 885 } 886 } 887 888 argc -= optind; 889 argv += optind; 890 891 /* check number of arguments */ 892 if (argc == 0) { 893 (void) fprintf(stderr, gettext("missing path argument\n")); 894 usage(B_FALSE); 895 } 896 if (argc > 1) { 897 (void) fprintf(stderr, gettext("too many arguments\n")); 898 usage(B_FALSE); 899 } 900 901 /* 902 * If we are doing recursive destroy of a snapshot, then the 903 * named snapshot may not exist. Go straight to libzfs. 904 */ 905 if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) { 906 int ret; 907 908 *cp = '\0'; 909 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 910 return (1); 911 *cp = '@'; 912 cp++; 913 914 if (cb.cb_doclones) { 915 cb.cb_snapname = cp; 916 if (destroy_snap_clones(zhp, &cb) != 0) { 917 zfs_close(zhp); 918 return (1); 919 } 920 } 921 922 ret = zfs_destroy_snaps(zhp, cp); 923 zfs_close(zhp); 924 if (ret) { 925 (void) fprintf(stderr, 926 gettext("no snapshots destroyed\n")); 927 } 928 return (ret != 0); 929 } 930 931 932 /* Open the given dataset */ 933 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 934 return (1); 935 936 cb.cb_target = zhp; 937 938 /* 939 * Perform an explicit check for pools before going any further. 940 */ 941 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL && 942 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 943 (void) fprintf(stderr, gettext("cannot destroy '%s': " 944 "operation does not apply to pools\n"), 945 zfs_get_name(zhp)); 946 (void) fprintf(stderr, gettext("use 'zfs destroy -r " 947 "%s' to destroy all datasets in the pool\n"), 948 zfs_get_name(zhp)); 949 (void) fprintf(stderr, gettext("use 'zpool destroy %s' " 950 "to destroy the pool itself\n"), zfs_get_name(zhp)); 951 zfs_close(zhp); 952 return (1); 953 } 954 955 /* 956 * Check for any dependents and/or clones. 957 */ 958 cb.cb_first = B_TRUE; 959 if (!cb.cb_doclones && 960 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent, 961 &cb) != 0) { 962 zfs_close(zhp); 963 return (1); 964 } 965 966 if (cb.cb_error || 967 zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0) { 968 zfs_close(zhp); 969 return (1); 970 } 971 972 /* 973 * Do the real thing. The callback will close the handle regardless of 974 * whether it succeeds or not. 975 */ 976 977 if (destroy_callback(zhp, &cb) != 0) 978 return (1); 979 980 981 return (0); 982 } 983 984 /* 985 * zfs get [-rHp] [-o field[,field]...] [-s source[,source]...] 986 * < all | property[,property]... > < fs | snap | vol > ... 987 * 988 * -r recurse over any child datasets 989 * -H scripted mode. Headers are stripped, and fields are separated 990 * by tabs instead of spaces. 991 * -o Set of fields to display. One of "name,property,value,source". 992 * Default is all four. 993 * -s Set of sources to allow. One of 994 * "local,default,inherited,temporary,none". Default is all 995 * five. 996 * -p Display values in parsable (literal) format. 997 * 998 * Prints properties for the given datasets. The user can control which 999 * columns to display as well as which property types to allow. 1000 */ 1001 1002 /* 1003 * Invoked to display the properties for a single dataset. 1004 */ 1005 static int 1006 get_callback(zfs_handle_t *zhp, void *data) 1007 { 1008 char buf[ZFS_MAXPROPLEN]; 1009 zprop_source_t sourcetype; 1010 char source[ZFS_MAXNAMELEN]; 1011 zprop_get_cbdata_t *cbp = data; 1012 nvlist_t *userprop = zfs_get_user_props(zhp); 1013 zprop_list_t *pl = cbp->cb_proplist; 1014 nvlist_t *propval; 1015 char *strval; 1016 char *sourceval; 1017 1018 for (; pl != NULL; pl = pl->pl_next) { 1019 /* 1020 * Skip the special fake placeholder. This will also skip over 1021 * the name property when 'all' is specified. 1022 */ 1023 if (pl->pl_prop == ZFS_PROP_NAME && 1024 pl == cbp->cb_proplist) 1025 continue; 1026 1027 if (pl->pl_prop != ZPROP_INVAL) { 1028 if (zfs_prop_get(zhp, pl->pl_prop, buf, 1029 sizeof (buf), &sourcetype, source, 1030 sizeof (source), 1031 cbp->cb_literal) != 0) { 1032 if (pl->pl_all) 1033 continue; 1034 if (!zfs_prop_valid_for_type(pl->pl_prop, 1035 ZFS_TYPE_DATASET)) { 1036 (void) fprintf(stderr, 1037 gettext("No such property '%s'\n"), 1038 zfs_prop_to_name(pl->pl_prop)); 1039 continue; 1040 } 1041 sourcetype = ZPROP_SRC_NONE; 1042 (void) strlcpy(buf, "-", sizeof (buf)); 1043 } 1044 1045 zprop_print_one_property(zfs_get_name(zhp), cbp, 1046 zfs_prop_to_name(pl->pl_prop), 1047 buf, sourcetype, source); 1048 } else { 1049 if (nvlist_lookup_nvlist(userprop, 1050 pl->pl_user_prop, &propval) != 0) { 1051 if (pl->pl_all) 1052 continue; 1053 sourcetype = ZPROP_SRC_NONE; 1054 strval = "-"; 1055 } else { 1056 verify(nvlist_lookup_string(propval, 1057 ZPROP_VALUE, &strval) == 0); 1058 verify(nvlist_lookup_string(propval, 1059 ZPROP_SOURCE, &sourceval) == 0); 1060 1061 if (strcmp(sourceval, 1062 zfs_get_name(zhp)) == 0) { 1063 sourcetype = ZPROP_SRC_LOCAL; 1064 } else { 1065 sourcetype = ZPROP_SRC_INHERITED; 1066 (void) strlcpy(source, 1067 sourceval, sizeof (source)); 1068 } 1069 } 1070 1071 zprop_print_one_property(zfs_get_name(zhp), cbp, 1072 pl->pl_user_prop, strval, sourcetype, 1073 source); 1074 } 1075 } 1076 1077 return (0); 1078 } 1079 1080 static int 1081 zfs_do_get(int argc, char **argv) 1082 { 1083 zprop_get_cbdata_t cb = { 0 }; 1084 boolean_t recurse = B_FALSE; 1085 int i, c; 1086 char *value, *fields; 1087 int ret; 1088 zprop_list_t fake_name = { 0 }; 1089 1090 /* 1091 * Set up default columns and sources. 1092 */ 1093 cb.cb_sources = ZPROP_SRC_ALL; 1094 cb.cb_columns[0] = GET_COL_NAME; 1095 cb.cb_columns[1] = GET_COL_PROPERTY; 1096 cb.cb_columns[2] = GET_COL_VALUE; 1097 cb.cb_columns[3] = GET_COL_SOURCE; 1098 cb.cb_type = ZFS_TYPE_DATASET; 1099 1100 /* check options */ 1101 while ((c = getopt(argc, argv, ":o:s:rHp")) != -1) { 1102 switch (c) { 1103 case 'p': 1104 cb.cb_literal = B_TRUE; 1105 break; 1106 case 'r': 1107 recurse = B_TRUE; 1108 break; 1109 case 'H': 1110 cb.cb_scripted = B_TRUE; 1111 break; 1112 case ':': 1113 (void) fprintf(stderr, gettext("missing argument for " 1114 "'%c' option\n"), optopt); 1115 usage(B_FALSE); 1116 break; 1117 case 'o': 1118 /* 1119 * Process the set of columns to display. We zero out 1120 * the structure to give us a blank slate. 1121 */ 1122 bzero(&cb.cb_columns, sizeof (cb.cb_columns)); 1123 i = 0; 1124 while (*optarg != '\0') { 1125 static char *col_subopts[] = 1126 { "name", "property", "value", "source", 1127 NULL }; 1128 1129 if (i == 4) { 1130 (void) fprintf(stderr, gettext("too " 1131 "many fields given to -o " 1132 "option\n")); 1133 usage(B_FALSE); 1134 } 1135 1136 switch (getsubopt(&optarg, col_subopts, 1137 &value)) { 1138 case 0: 1139 cb.cb_columns[i++] = GET_COL_NAME; 1140 break; 1141 case 1: 1142 cb.cb_columns[i++] = GET_COL_PROPERTY; 1143 break; 1144 case 2: 1145 cb.cb_columns[i++] = GET_COL_VALUE; 1146 break; 1147 case 3: 1148 cb.cb_columns[i++] = GET_COL_SOURCE; 1149 break; 1150 default: 1151 (void) fprintf(stderr, 1152 gettext("invalid column name " 1153 "'%s'\n"), value); 1154 usage(B_FALSE); 1155 } 1156 } 1157 break; 1158 1159 case 's': 1160 cb.cb_sources = 0; 1161 while (*optarg != '\0') { 1162 static char *source_subopts[] = { 1163 "local", "default", "inherited", 1164 "temporary", "none", NULL }; 1165 1166 switch (getsubopt(&optarg, source_subopts, 1167 &value)) { 1168 case 0: 1169 cb.cb_sources |= ZPROP_SRC_LOCAL; 1170 break; 1171 case 1: 1172 cb.cb_sources |= ZPROP_SRC_DEFAULT; 1173 break; 1174 case 2: 1175 cb.cb_sources |= ZPROP_SRC_INHERITED; 1176 break; 1177 case 3: 1178 cb.cb_sources |= ZPROP_SRC_TEMPORARY; 1179 break; 1180 case 4: 1181 cb.cb_sources |= ZPROP_SRC_NONE; 1182 break; 1183 default: 1184 (void) fprintf(stderr, 1185 gettext("invalid source " 1186 "'%s'\n"), value); 1187 usage(B_FALSE); 1188 } 1189 } 1190 break; 1191 1192 case '?': 1193 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1194 optopt); 1195 usage(B_FALSE); 1196 } 1197 } 1198 1199 argc -= optind; 1200 argv += optind; 1201 1202 if (argc < 1) { 1203 (void) fprintf(stderr, gettext("missing property " 1204 "argument\n")); 1205 usage(B_FALSE); 1206 } 1207 1208 fields = argv[0]; 1209 1210 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1211 != 0) 1212 usage(B_FALSE); 1213 1214 argc--; 1215 argv++; 1216 1217 /* 1218 * As part of zfs_expand_proplist(), we keep track of the maximum column 1219 * width for each property. For the 'NAME' (and 'SOURCE') columns, we 1220 * need to know the maximum name length. However, the user likely did 1221 * not specify 'name' as one of the properties to fetch, so we need to 1222 * make sure we always include at least this property for 1223 * print_get_headers() to work properly. 1224 */ 1225 if (cb.cb_proplist != NULL) { 1226 fake_name.pl_prop = ZFS_PROP_NAME; 1227 fake_name.pl_width = strlen(gettext("NAME")); 1228 fake_name.pl_next = cb.cb_proplist; 1229 cb.cb_proplist = &fake_name; 1230 } 1231 1232 cb.cb_first = B_TRUE; 1233 1234 /* run for each object */ 1235 ret = zfs_for_each(argc, argv, recurse, ZFS_TYPE_DATASET, NULL, 1236 &cb.cb_proplist, get_callback, &cb, B_FALSE); 1237 1238 if (cb.cb_proplist == &fake_name) 1239 zprop_free_list(fake_name.pl_next); 1240 else 1241 zprop_free_list(cb.cb_proplist); 1242 1243 return (ret); 1244 } 1245 1246 /* 1247 * inherit [-r] <property> <fs|vol> ... 1248 * 1249 * -r Recurse over all children 1250 * 1251 * For each dataset specified on the command line, inherit the given property 1252 * from its parent. Inheriting a property at the pool level will cause it to 1253 * use the default value. The '-r' flag will recurse over all children, and is 1254 * useful for setting a property on a hierarchy-wide basis, regardless of any 1255 * local modifications for each dataset. 1256 */ 1257 1258 static int 1259 inherit_callback(zfs_handle_t *zhp, void *data) 1260 { 1261 char *propname = data; 1262 int ret; 1263 1264 ret = zfs_prop_inherit(zhp, propname); 1265 return (ret != 0); 1266 } 1267 1268 static int 1269 zfs_do_inherit(int argc, char **argv) 1270 { 1271 boolean_t recurse = B_FALSE; 1272 int c; 1273 zfs_prop_t prop; 1274 char *propname; 1275 int ret; 1276 1277 /* check options */ 1278 while ((c = getopt(argc, argv, "r")) != -1) { 1279 switch (c) { 1280 case 'r': 1281 recurse = B_TRUE; 1282 break; 1283 case '?': 1284 default: 1285 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1286 optopt); 1287 usage(B_FALSE); 1288 } 1289 } 1290 1291 argc -= optind; 1292 argv += optind; 1293 1294 /* check number of arguments */ 1295 if (argc < 1) { 1296 (void) fprintf(stderr, gettext("missing property argument\n")); 1297 usage(B_FALSE); 1298 } 1299 if (argc < 2) { 1300 (void) fprintf(stderr, gettext("missing dataset argument\n")); 1301 usage(B_FALSE); 1302 } 1303 1304 propname = argv[0]; 1305 argc--; 1306 argv++; 1307 1308 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) { 1309 if (zfs_prop_readonly(prop)) { 1310 (void) fprintf(stderr, gettext( 1311 "%s property is read-only\n"), 1312 propname); 1313 return (1); 1314 } 1315 if (!zfs_prop_inheritable(prop)) { 1316 (void) fprintf(stderr, gettext("'%s' property cannot " 1317 "be inherited\n"), propname); 1318 if (prop == ZFS_PROP_QUOTA || 1319 prop == ZFS_PROP_RESERVATION || 1320 prop == ZFS_PROP_REFQUOTA || 1321 prop == ZFS_PROP_REFRESERVATION) 1322 (void) fprintf(stderr, gettext("use 'zfs set " 1323 "%s=none' to clear\n"), propname); 1324 return (1); 1325 } 1326 } else if (!zfs_prop_user(propname)) { 1327 (void) fprintf(stderr, gettext("invalid property '%s'\n"), 1328 propname); 1329 usage(B_FALSE); 1330 } 1331 1332 ret = zfs_for_each(argc, argv, recurse, 1333 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, NULL, NULL, 1334 inherit_callback, propname, B_FALSE); 1335 1336 return (ret); 1337 } 1338 1339 typedef struct upgrade_cbdata { 1340 uint64_t cb_numupgraded; 1341 uint64_t cb_numsamegraded; 1342 uint64_t cb_numfailed; 1343 uint64_t cb_version; 1344 boolean_t cb_newer; 1345 boolean_t cb_foundone; 1346 char cb_lastfs[ZFS_MAXNAMELEN]; 1347 } upgrade_cbdata_t; 1348 1349 static int 1350 same_pool(zfs_handle_t *zhp, const char *name) 1351 { 1352 int len1 = strcspn(name, "/@"); 1353 const char *zhname = zfs_get_name(zhp); 1354 int len2 = strcspn(zhname, "/@"); 1355 1356 if (len1 != len2) 1357 return (B_FALSE); 1358 return (strncmp(name, zhname, len1) == 0); 1359 } 1360 1361 static int 1362 upgrade_list_callback(zfs_handle_t *zhp, void *data) 1363 { 1364 upgrade_cbdata_t *cb = data; 1365 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1366 1367 /* list if it's old/new */ 1368 if ((!cb->cb_newer && version < ZPL_VERSION) || 1369 (cb->cb_newer && version > ZPL_VERSION)) { 1370 char *str; 1371 if (cb->cb_newer) { 1372 str = gettext("The following filesystems are " 1373 "formatted using a newer software version and\n" 1374 "cannot be accessed on the current system.\n\n"); 1375 } else { 1376 str = gettext("The following filesystems are " 1377 "out of date, and can be upgraded. After being\n" 1378 "upgraded, these filesystems (and any 'zfs send' " 1379 "streams generated from\n" 1380 "subsequent snapshots) will no longer be " 1381 "accessible by older software versions.\n\n"); 1382 } 1383 1384 if (!cb->cb_foundone) { 1385 (void) puts(str); 1386 (void) printf(gettext("VER FILESYSTEM\n")); 1387 (void) printf(gettext("--- ------------\n")); 1388 cb->cb_foundone = B_TRUE; 1389 } 1390 1391 (void) printf("%2u %s\n", version, zfs_get_name(zhp)); 1392 } 1393 1394 return (0); 1395 } 1396 1397 static int 1398 upgrade_set_callback(zfs_handle_t *zhp, void *data) 1399 { 1400 upgrade_cbdata_t *cb = data; 1401 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1402 1403 if (cb->cb_version >= ZPL_VERSION_FUID) { 1404 int spa_version; 1405 1406 if (zfs_spa_version(zhp, &spa_version) < 0) 1407 return (-1); 1408 1409 if (spa_version < SPA_VERSION_FUID) { 1410 /* can't upgrade */ 1411 (void) printf(gettext("%s: can not be upgraded; " 1412 "the pool version needs to first be upgraded\nto " 1413 "version %d\n\n"), 1414 zfs_get_name(zhp), SPA_VERSION_FUID); 1415 cb->cb_numfailed++; 1416 return (0); 1417 } 1418 } 1419 1420 /* upgrade */ 1421 if (version < cb->cb_version) { 1422 char verstr[16]; 1423 (void) snprintf(verstr, sizeof (verstr), 1424 "%llu", cb->cb_version); 1425 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) { 1426 /* 1427 * If they did "zfs upgrade -a", then we could 1428 * be doing ioctls to different pools. We need 1429 * to log this history once to each pool. 1430 */ 1431 verify(zpool_stage_history(g_zfs, history_str) == 0); 1432 } 1433 if (zfs_prop_set(zhp, "version", verstr) == 0) 1434 cb->cb_numupgraded++; 1435 else 1436 cb->cb_numfailed++; 1437 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp)); 1438 } else if (version > cb->cb_version) { 1439 /* can't downgrade */ 1440 (void) printf(gettext("%s: can not be downgraded; " 1441 "it is already at version %u\n"), 1442 zfs_get_name(zhp), version); 1443 cb->cb_numfailed++; 1444 } else { 1445 cb->cb_numsamegraded++; 1446 } 1447 return (0); 1448 } 1449 1450 /* 1451 * zfs upgrade 1452 * zfs upgrade -v 1453 * zfs upgrade [-r] [-V <version>] <-a | filesystem> 1454 */ 1455 static int 1456 zfs_do_upgrade(int argc, char **argv) 1457 { 1458 boolean_t recurse = B_FALSE; 1459 boolean_t all = B_FALSE; 1460 boolean_t showversions = B_FALSE; 1461 int ret; 1462 upgrade_cbdata_t cb = { 0 }; 1463 char c; 1464 1465 /* check options */ 1466 while ((c = getopt(argc, argv, "rvV:a")) != -1) { 1467 switch (c) { 1468 case 'r': 1469 recurse = B_TRUE; 1470 break; 1471 case 'v': 1472 showversions = B_TRUE; 1473 break; 1474 case 'V': 1475 if (zfs_prop_string_to_index(ZFS_PROP_VERSION, 1476 optarg, &cb.cb_version) != 0) { 1477 (void) fprintf(stderr, 1478 gettext("invalid version %s\n"), optarg); 1479 usage(B_FALSE); 1480 } 1481 break; 1482 case 'a': 1483 all = B_TRUE; 1484 break; 1485 case '?': 1486 default: 1487 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1488 optopt); 1489 usage(B_FALSE); 1490 } 1491 } 1492 1493 argc -= optind; 1494 argv += optind; 1495 1496 if ((!all && !argc) && (recurse | cb.cb_version)) 1497 usage(B_FALSE); 1498 if (showversions && (recurse || all || cb.cb_version || argc)) 1499 usage(B_FALSE); 1500 if ((all || argc) && (showversions)) 1501 usage(B_FALSE); 1502 if (all && argc) 1503 usage(B_FALSE); 1504 1505 if (showversions) { 1506 /* Show info on available versions. */ 1507 (void) printf(gettext("The following filesystem versions are " 1508 "supported:\n\n")); 1509 (void) printf(gettext("VER DESCRIPTION\n")); 1510 (void) printf("--- -----------------------------------------" 1511 "---------------\n"); 1512 (void) printf(gettext(" 1 Initial ZFS filesystem version\n")); 1513 (void) printf(gettext(" 2 Enhanced directory entries\n")); 1514 (void) printf(gettext(" 3 Case insensitive and File system " 1515 "unique identifer (FUID)\n")); 1516 (void) printf(gettext("\nFor more information on a particular " 1517 "version, including supported releases, see:\n\n")); 1518 (void) printf("http://www.opensolaris.org/os/community/zfs/" 1519 "version/zpl/N\n\n"); 1520 (void) printf(gettext("Where 'N' is the version number.\n")); 1521 ret = 0; 1522 } else if (argc || all) { 1523 /* Upgrade filesystems */ 1524 if (cb.cb_version == 0) 1525 cb.cb_version = ZPL_VERSION; 1526 ret = zfs_for_each(argc, argv, recurse, ZFS_TYPE_FILESYSTEM, 1527 NULL, NULL, upgrade_set_callback, &cb, B_TRUE); 1528 (void) printf(gettext("%llu filesystems upgraded\n"), 1529 cb.cb_numupgraded); 1530 if (cb.cb_numsamegraded) { 1531 (void) printf(gettext("%llu filesystems already at " 1532 "this version\n"), 1533 cb.cb_numsamegraded); 1534 } 1535 if (cb.cb_numfailed != 0) 1536 ret = 1; 1537 } else { 1538 /* List old-version filesytems */ 1539 boolean_t found; 1540 (void) printf(gettext("This system is currently running " 1541 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION); 1542 1543 ret = zfs_for_each(0, NULL, B_TRUE, ZFS_TYPE_FILESYSTEM, 1544 NULL, NULL, upgrade_list_callback, &cb, B_TRUE); 1545 1546 found = cb.cb_foundone; 1547 cb.cb_foundone = B_FALSE; 1548 cb.cb_newer = B_TRUE; 1549 1550 ret = zfs_for_each(0, NULL, B_TRUE, ZFS_TYPE_FILESYSTEM, 1551 NULL, NULL, upgrade_list_callback, &cb, B_TRUE); 1552 1553 if (!cb.cb_foundone && !found) { 1554 (void) printf(gettext("All filesystems are " 1555 "formatted with the current version.\n")); 1556 } 1557 } 1558 1559 return (ret); 1560 } 1561 1562 /* 1563 * list [-rH] [-o property[,property]...] [-t type[,type]...] 1564 * [-s property [-s property]...] [-S property [-S property]...] 1565 * <dataset> ... 1566 * 1567 * -r Recurse over all children 1568 * -H Scripted mode; elide headers and separate columns by tabs 1569 * -o Control which fields to display. 1570 * -t Control which object types to display. 1571 * -s Specify sort columns, descending order. 1572 * -S Specify sort columns, ascending order. 1573 * 1574 * When given no arguments, lists all filesystems in the system. 1575 * Otherwise, list the specified datasets, optionally recursing down them if 1576 * '-r' is specified. 1577 */ 1578 typedef struct list_cbdata { 1579 boolean_t cb_first; 1580 boolean_t cb_scripted; 1581 zprop_list_t *cb_proplist; 1582 } list_cbdata_t; 1583 1584 /* 1585 * Given a list of columns to display, output appropriate headers for each one. 1586 */ 1587 static void 1588 print_header(zprop_list_t *pl) 1589 { 1590 char headerbuf[ZFS_MAXPROPLEN]; 1591 const char *header; 1592 int i; 1593 boolean_t first = B_TRUE; 1594 boolean_t right_justify; 1595 1596 for (; pl != NULL; pl = pl->pl_next) { 1597 if (!first) { 1598 (void) printf(" "); 1599 } else { 1600 first = B_FALSE; 1601 } 1602 1603 right_justify = B_FALSE; 1604 if (pl->pl_prop != ZPROP_INVAL) { 1605 header = zfs_prop_column_name(pl->pl_prop); 1606 right_justify = zfs_prop_align_right(pl->pl_prop); 1607 } else { 1608 for (i = 0; pl->pl_user_prop[i] != '\0'; i++) 1609 headerbuf[i] = toupper(pl->pl_user_prop[i]); 1610 headerbuf[i] = '\0'; 1611 header = headerbuf; 1612 } 1613 1614 if (pl->pl_next == NULL && !right_justify) 1615 (void) printf("%s", header); 1616 else if (right_justify) 1617 (void) printf("%*s", pl->pl_width, header); 1618 else 1619 (void) printf("%-*s", pl->pl_width, header); 1620 } 1621 1622 (void) printf("\n"); 1623 } 1624 1625 /* 1626 * Given a dataset and a list of fields, print out all the properties according 1627 * to the described layout. 1628 */ 1629 static void 1630 print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted) 1631 { 1632 boolean_t first = B_TRUE; 1633 char property[ZFS_MAXPROPLEN]; 1634 nvlist_t *userprops = zfs_get_user_props(zhp); 1635 nvlist_t *propval; 1636 char *propstr; 1637 boolean_t right_justify; 1638 int width; 1639 1640 for (; pl != NULL; pl = pl->pl_next) { 1641 if (!first) { 1642 if (scripted) 1643 (void) printf("\t"); 1644 else 1645 (void) printf(" "); 1646 } else { 1647 first = B_FALSE; 1648 } 1649 1650 right_justify = B_FALSE; 1651 if (pl->pl_prop != ZPROP_INVAL) { 1652 if (zfs_prop_get(zhp, pl->pl_prop, property, 1653 sizeof (property), NULL, NULL, 0, B_FALSE) != 0) 1654 propstr = "-"; 1655 else 1656 propstr = property; 1657 1658 right_justify = zfs_prop_align_right(pl->pl_prop); 1659 } else { 1660 if (nvlist_lookup_nvlist(userprops, 1661 pl->pl_user_prop, &propval) != 0) 1662 propstr = "-"; 1663 else 1664 verify(nvlist_lookup_string(propval, 1665 ZPROP_VALUE, &propstr) == 0); 1666 } 1667 1668 width = pl->pl_width; 1669 1670 /* 1671 * If this is being called in scripted mode, or if this is the 1672 * last column and it is left-justified, don't include a width 1673 * format specifier. 1674 */ 1675 if (scripted || (pl->pl_next == NULL && !right_justify)) 1676 (void) printf("%s", propstr); 1677 else if (right_justify) 1678 (void) printf("%*s", width, propstr); 1679 else 1680 (void) printf("%-*s", width, propstr); 1681 } 1682 1683 (void) printf("\n"); 1684 } 1685 1686 /* 1687 * Generic callback function to list a dataset or snapshot. 1688 */ 1689 static int 1690 list_callback(zfs_handle_t *zhp, void *data) 1691 { 1692 list_cbdata_t *cbp = data; 1693 1694 if (cbp->cb_first) { 1695 if (!cbp->cb_scripted) 1696 print_header(cbp->cb_proplist); 1697 cbp->cb_first = B_FALSE; 1698 } 1699 1700 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted); 1701 1702 return (0); 1703 } 1704 1705 static int 1706 zfs_do_list(int argc, char **argv) 1707 { 1708 int c; 1709 boolean_t recurse = B_FALSE; 1710 boolean_t scripted = B_FALSE; 1711 static char default_fields[] = 1712 "name,used,available,referenced,mountpoint"; 1713 int types = ZFS_TYPE_DATASET; 1714 char *fields = NULL; 1715 char *basic_fields = default_fields; 1716 list_cbdata_t cb = { 0 }; 1717 char *value; 1718 int ret; 1719 char *type_subopts[] = { "filesystem", "volume", "snapshot", NULL }; 1720 zfs_sort_column_t *sortcol = NULL; 1721 1722 /* check options */ 1723 while ((c = getopt(argc, argv, ":o:rt:Hs:S:")) != -1) { 1724 switch (c) { 1725 case 'o': 1726 fields = optarg; 1727 break; 1728 case 'r': 1729 recurse = B_TRUE; 1730 break; 1731 case 'H': 1732 scripted = B_TRUE; 1733 break; 1734 case 's': 1735 if (zfs_add_sort_column(&sortcol, optarg, 1736 B_FALSE) != 0) { 1737 (void) fprintf(stderr, 1738 gettext("invalid property '%s'\n"), optarg); 1739 usage(B_FALSE); 1740 } 1741 break; 1742 case 'S': 1743 if (zfs_add_sort_column(&sortcol, optarg, 1744 B_TRUE) != 0) { 1745 (void) fprintf(stderr, 1746 gettext("invalid property '%s'\n"), optarg); 1747 usage(B_FALSE); 1748 } 1749 break; 1750 case 't': 1751 types = 0; 1752 while (*optarg != '\0') { 1753 switch (getsubopt(&optarg, type_subopts, 1754 &value)) { 1755 case 0: 1756 types |= ZFS_TYPE_FILESYSTEM; 1757 break; 1758 case 1: 1759 types |= ZFS_TYPE_VOLUME; 1760 break; 1761 case 2: 1762 types |= ZFS_TYPE_SNAPSHOT; 1763 break; 1764 default: 1765 (void) fprintf(stderr, 1766 gettext("invalid type '%s'\n"), 1767 value); 1768 usage(B_FALSE); 1769 } 1770 } 1771 break; 1772 case ':': 1773 (void) fprintf(stderr, gettext("missing argument for " 1774 "'%c' option\n"), optopt); 1775 usage(B_FALSE); 1776 break; 1777 case '?': 1778 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1779 optopt); 1780 usage(B_FALSE); 1781 } 1782 } 1783 1784 argc -= optind; 1785 argv += optind; 1786 1787 if (fields == NULL) 1788 fields = basic_fields; 1789 1790 /* 1791 * If the user specifies '-o all', the zprop_get_list() doesn't 1792 * normally include the name of the dataset. For 'zfs list', we always 1793 * want this property to be first. 1794 */ 1795 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1796 != 0) 1797 usage(B_FALSE); 1798 1799 cb.cb_scripted = scripted; 1800 cb.cb_first = B_TRUE; 1801 1802 ret = zfs_for_each(argc, argv, recurse, types, sortcol, &cb.cb_proplist, 1803 list_callback, &cb, B_TRUE); 1804 1805 zprop_free_list(cb.cb_proplist); 1806 zfs_free_sort_columns(sortcol); 1807 1808 if (ret == 0 && cb.cb_first && !cb.cb_scripted) 1809 (void) printf(gettext("no datasets available\n")); 1810 1811 return (ret); 1812 } 1813 1814 /* 1815 * zfs rename <fs | snap | vol> <fs | snap | vol> 1816 * zfs rename -p <fs | vol> <fs | vol> 1817 * zfs rename -r <snap> <snap> 1818 * 1819 * Renames the given dataset to another of the same type. 1820 * 1821 * The '-p' flag creates all the non-existing ancestors of the target first. 1822 */ 1823 /* ARGSUSED */ 1824 static int 1825 zfs_do_rename(int argc, char **argv) 1826 { 1827 zfs_handle_t *zhp; 1828 int c; 1829 int ret; 1830 boolean_t recurse = B_FALSE; 1831 boolean_t parents = B_FALSE; 1832 1833 /* check options */ 1834 while ((c = getopt(argc, argv, "pr")) != -1) { 1835 switch (c) { 1836 case 'p': 1837 parents = B_TRUE; 1838 break; 1839 case 'r': 1840 recurse = B_TRUE; 1841 break; 1842 case '?': 1843 default: 1844 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1845 optopt); 1846 usage(B_FALSE); 1847 } 1848 } 1849 1850 argc -= optind; 1851 argv += optind; 1852 1853 /* check number of arguments */ 1854 if (argc < 1) { 1855 (void) fprintf(stderr, gettext("missing source dataset " 1856 "argument\n")); 1857 usage(B_FALSE); 1858 } 1859 if (argc < 2) { 1860 (void) fprintf(stderr, gettext("missing target dataset " 1861 "argument\n")); 1862 usage(B_FALSE); 1863 } 1864 if (argc > 2) { 1865 (void) fprintf(stderr, gettext("too many arguments\n")); 1866 usage(B_FALSE); 1867 } 1868 1869 if (recurse && parents) { 1870 (void) fprintf(stderr, gettext("-p and -r options are mutually " 1871 "exclusive\n")); 1872 usage(B_FALSE); 1873 } 1874 1875 if (recurse && strchr(argv[0], '@') == 0) { 1876 (void) fprintf(stderr, gettext("source dataset for recursive " 1877 "rename must be a snapshot\n")); 1878 usage(B_FALSE); 1879 } 1880 1881 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM | 1882 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL) 1883 return (1); 1884 1885 /* If we were asked and the name looks good, try to create ancestors. */ 1886 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) && 1887 zfs_create_ancestors(g_zfs, argv[1]) != 0) { 1888 zfs_close(zhp); 1889 return (1); 1890 } 1891 1892 ret = (zfs_rename(zhp, argv[1], recurse) != 0); 1893 1894 zfs_close(zhp); 1895 return (ret); 1896 } 1897 1898 /* 1899 * zfs promote <fs> 1900 * 1901 * Promotes the given clone fs to be the parent 1902 */ 1903 /* ARGSUSED */ 1904 static int 1905 zfs_do_promote(int argc, char **argv) 1906 { 1907 zfs_handle_t *zhp; 1908 int ret; 1909 1910 /* check options */ 1911 if (argc > 1 && argv[1][0] == '-') { 1912 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1913 argv[1][1]); 1914 usage(B_FALSE); 1915 } 1916 1917 /* check number of arguments */ 1918 if (argc < 2) { 1919 (void) fprintf(stderr, gettext("missing clone filesystem" 1920 " argument\n")); 1921 usage(B_FALSE); 1922 } 1923 if (argc > 2) { 1924 (void) fprintf(stderr, gettext("too many arguments\n")); 1925 usage(B_FALSE); 1926 } 1927 1928 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 1929 if (zhp == NULL) 1930 return (1); 1931 1932 ret = (zfs_promote(zhp) != 0); 1933 1934 1935 zfs_close(zhp); 1936 return (ret); 1937 } 1938 1939 /* 1940 * zfs rollback [-rRf] <snapshot> 1941 * 1942 * -r Delete any intervening snapshots before doing rollback 1943 * -R Delete any snapshots and their clones 1944 * -f ignored for backwards compatability 1945 * 1946 * Given a filesystem, rollback to a specific snapshot, discarding any changes 1947 * since then and making it the active dataset. If more recent snapshots exist, 1948 * the command will complain unless the '-r' flag is given. 1949 */ 1950 typedef struct rollback_cbdata { 1951 uint64_t cb_create; 1952 boolean_t cb_first; 1953 int cb_doclones; 1954 char *cb_target; 1955 int cb_error; 1956 boolean_t cb_recurse; 1957 boolean_t cb_dependent; 1958 } rollback_cbdata_t; 1959 1960 /* 1961 * Report any snapshots more recent than the one specified. Used when '-r' is 1962 * not specified. We reuse this same callback for the snapshot dependents - if 1963 * 'cb_dependent' is set, then this is a dependent and we should report it 1964 * without checking the transaction group. 1965 */ 1966 static int 1967 rollback_check(zfs_handle_t *zhp, void *data) 1968 { 1969 rollback_cbdata_t *cbp = data; 1970 1971 if (cbp->cb_doclones) { 1972 zfs_close(zhp); 1973 return (0); 1974 } 1975 1976 if (!cbp->cb_dependent) { 1977 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 && 1978 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && 1979 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > 1980 cbp->cb_create) { 1981 1982 if (cbp->cb_first && !cbp->cb_recurse) { 1983 (void) fprintf(stderr, gettext("cannot " 1984 "rollback to '%s': more recent snapshots " 1985 "exist\n"), 1986 cbp->cb_target); 1987 (void) fprintf(stderr, gettext("use '-r' to " 1988 "force deletion of the following " 1989 "snapshots:\n")); 1990 cbp->cb_first = 0; 1991 cbp->cb_error = 1; 1992 } 1993 1994 if (cbp->cb_recurse) { 1995 cbp->cb_dependent = B_TRUE; 1996 if (zfs_iter_dependents(zhp, B_TRUE, 1997 rollback_check, cbp) != 0) { 1998 zfs_close(zhp); 1999 return (-1); 2000 } 2001 cbp->cb_dependent = B_FALSE; 2002 } else { 2003 (void) fprintf(stderr, "%s\n", 2004 zfs_get_name(zhp)); 2005 } 2006 } 2007 } else { 2008 if (cbp->cb_first && cbp->cb_recurse) { 2009 (void) fprintf(stderr, gettext("cannot rollback to " 2010 "'%s': clones of previous snapshots exist\n"), 2011 cbp->cb_target); 2012 (void) fprintf(stderr, gettext("use '-R' to " 2013 "force deletion of the following clones and " 2014 "dependents:\n")); 2015 cbp->cb_first = 0; 2016 cbp->cb_error = 1; 2017 } 2018 2019 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 2020 } 2021 2022 zfs_close(zhp); 2023 return (0); 2024 } 2025 2026 static int 2027 zfs_do_rollback(int argc, char **argv) 2028 { 2029 int ret; 2030 int c; 2031 boolean_t force = B_FALSE; 2032 rollback_cbdata_t cb = { 0 }; 2033 zfs_handle_t *zhp, *snap; 2034 char parentname[ZFS_MAXNAMELEN]; 2035 char *delim; 2036 2037 /* check options */ 2038 while ((c = getopt(argc, argv, "rRf")) != -1) { 2039 switch (c) { 2040 case 'r': 2041 cb.cb_recurse = 1; 2042 break; 2043 case 'R': 2044 cb.cb_recurse = 1; 2045 cb.cb_doclones = 1; 2046 break; 2047 case 'f': 2048 force = B_TRUE; 2049 break; 2050 case '?': 2051 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2052 optopt); 2053 usage(B_FALSE); 2054 } 2055 } 2056 2057 argc -= optind; 2058 argv += optind; 2059 2060 /* check number of arguments */ 2061 if (argc < 1) { 2062 (void) fprintf(stderr, gettext("missing dataset argument\n")); 2063 usage(B_FALSE); 2064 } 2065 if (argc > 1) { 2066 (void) fprintf(stderr, gettext("too many arguments\n")); 2067 usage(B_FALSE); 2068 } 2069 2070 /* open the snapshot */ 2071 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 2072 return (1); 2073 2074 /* open the parent dataset */ 2075 (void) strlcpy(parentname, argv[0], sizeof (parentname)); 2076 verify((delim = strrchr(parentname, '@')) != NULL); 2077 *delim = '\0'; 2078 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) { 2079 zfs_close(snap); 2080 return (1); 2081 } 2082 2083 /* 2084 * Check for more recent snapshots and/or clones based on the presence 2085 * of '-r' and '-R'. 2086 */ 2087 cb.cb_target = argv[0]; 2088 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 2089 cb.cb_first = B_TRUE; 2090 cb.cb_error = 0; 2091 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0) 2092 goto out; 2093 2094 if ((ret = cb.cb_error) != 0) 2095 goto out; 2096 2097 /* 2098 * Rollback parent to the given snapshot. 2099 */ 2100 ret = zfs_rollback(zhp, snap, force); 2101 2102 out: 2103 zfs_close(snap); 2104 zfs_close(zhp); 2105 2106 if (ret == 0) 2107 return (0); 2108 else 2109 return (1); 2110 } 2111 2112 /* 2113 * zfs set property=value { fs | snap | vol } ... 2114 * 2115 * Sets the given property for all datasets specified on the command line. 2116 */ 2117 typedef struct set_cbdata { 2118 char *cb_propname; 2119 char *cb_value; 2120 } set_cbdata_t; 2121 2122 static int 2123 set_callback(zfs_handle_t *zhp, void *data) 2124 { 2125 set_cbdata_t *cbp = data; 2126 2127 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) { 2128 switch (libzfs_errno(g_zfs)) { 2129 case EZFS_MOUNTFAILED: 2130 (void) fprintf(stderr, gettext("property may be set " 2131 "but unable to remount filesystem\n")); 2132 break; 2133 case EZFS_SHARENFSFAILED: 2134 (void) fprintf(stderr, gettext("property may be set " 2135 "but unable to reshare filesystem\n")); 2136 break; 2137 } 2138 return (1); 2139 } 2140 return (0); 2141 } 2142 2143 static int 2144 zfs_do_set(int argc, char **argv) 2145 { 2146 set_cbdata_t cb; 2147 int ret; 2148 2149 /* check for options */ 2150 if (argc > 1 && argv[1][0] == '-') { 2151 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2152 argv[1][1]); 2153 usage(B_FALSE); 2154 } 2155 2156 /* check number of arguments */ 2157 if (argc < 2) { 2158 (void) fprintf(stderr, gettext("missing property=value " 2159 "argument\n")); 2160 usage(B_FALSE); 2161 } 2162 if (argc < 3) { 2163 (void) fprintf(stderr, gettext("missing dataset name\n")); 2164 usage(B_FALSE); 2165 } 2166 2167 /* validate property=value argument */ 2168 cb.cb_propname = argv[1]; 2169 if ((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) { 2170 (void) fprintf(stderr, gettext("missing value in " 2171 "property=value argument\n")); 2172 usage(B_FALSE); 2173 } 2174 2175 *cb.cb_value = '\0'; 2176 cb.cb_value++; 2177 2178 if (*cb.cb_propname == '\0') { 2179 (void) fprintf(stderr, 2180 gettext("missing property in property=value argument\n")); 2181 usage(B_FALSE); 2182 } 2183 2184 2185 ret = zfs_for_each(argc - 2, argv + 2, B_FALSE, 2186 ZFS_TYPE_DATASET, NULL, NULL, set_callback, &cb, B_FALSE); 2187 2188 return (ret); 2189 } 2190 2191 /* 2192 * zfs snapshot [-r] <fs@snap> 2193 * 2194 * Creates a snapshot with the given name. While functionally equivalent to 2195 * 'zfs create', it is a separate command to differentiate intent. 2196 */ 2197 static int 2198 zfs_do_snapshot(int argc, char **argv) 2199 { 2200 boolean_t recursive = B_FALSE; 2201 int ret; 2202 char c; 2203 2204 /* check options */ 2205 while ((c = getopt(argc, argv, ":r")) != -1) { 2206 switch (c) { 2207 case 'r': 2208 recursive = B_TRUE; 2209 break; 2210 case '?': 2211 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2212 optopt); 2213 usage(B_FALSE); 2214 } 2215 } 2216 2217 argc -= optind; 2218 argv += optind; 2219 2220 /* check number of arguments */ 2221 if (argc < 1) { 2222 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2223 usage(B_FALSE); 2224 } 2225 if (argc > 1) { 2226 (void) fprintf(stderr, gettext("too many arguments\n")); 2227 usage(B_FALSE); 2228 } 2229 2230 ret = zfs_snapshot(g_zfs, argv[0], recursive); 2231 if (ret && recursive) 2232 (void) fprintf(stderr, gettext("no snapshots were created\n")); 2233 return (ret != 0); 2234 } 2235 2236 /* 2237 * zfs send [-v] -R [-i|-I <@snap>] <fs@snap> 2238 * zfs send [-v] [-i|-I <@snap>] <fs@snap> 2239 * 2240 * Send a backup stream to stdout. 2241 */ 2242 static int 2243 zfs_do_send(int argc, char **argv) 2244 { 2245 char *fromname = NULL; 2246 char *toname = NULL; 2247 char *cp; 2248 zfs_handle_t *zhp; 2249 boolean_t doall = B_FALSE; 2250 boolean_t replicate = B_FALSE; 2251 boolean_t fromorigin = B_FALSE; 2252 boolean_t verbose = B_FALSE; 2253 int c, err; 2254 2255 /* check options */ 2256 while ((c = getopt(argc, argv, ":i:I:Rv")) != -1) { 2257 switch (c) { 2258 case 'i': 2259 if (fromname) 2260 usage(B_FALSE); 2261 fromname = optarg; 2262 break; 2263 case 'I': 2264 if (fromname) 2265 usage(B_FALSE); 2266 fromname = optarg; 2267 doall = B_TRUE; 2268 break; 2269 case 'R': 2270 replicate = B_TRUE; 2271 break; 2272 case 'v': 2273 verbose = B_TRUE; 2274 break; 2275 case ':': 2276 (void) fprintf(stderr, gettext("missing argument for " 2277 "'%c' option\n"), optopt); 2278 usage(B_FALSE); 2279 break; 2280 case '?': 2281 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2282 optopt); 2283 usage(B_FALSE); 2284 } 2285 } 2286 2287 argc -= optind; 2288 argv += optind; 2289 2290 /* check number of arguments */ 2291 if (argc < 1) { 2292 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2293 usage(B_FALSE); 2294 } 2295 if (argc > 1) { 2296 (void) fprintf(stderr, gettext("too many arguments\n")); 2297 usage(B_FALSE); 2298 } 2299 2300 if (isatty(STDOUT_FILENO)) { 2301 (void) fprintf(stderr, 2302 gettext("Error: Stream can not be written to a terminal.\n" 2303 "You must redirect standard output.\n")); 2304 return (1); 2305 } 2306 2307 cp = strchr(argv[0], '@'); 2308 if (cp == NULL) { 2309 (void) fprintf(stderr, 2310 gettext("argument must be a snapshot\n")); 2311 usage(B_FALSE); 2312 } 2313 *cp = '\0'; 2314 toname = cp + 1; 2315 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2316 if (zhp == NULL) 2317 return (1); 2318 2319 /* 2320 * If they specified the full path to the snapshot, chop off 2321 * everything except the short name of the snapshot, but special 2322 * case if they specify the origin. 2323 */ 2324 if (fromname && (cp = strchr(fromname, '@')) != NULL) { 2325 char origin[ZFS_MAXNAMELEN]; 2326 zprop_source_t src; 2327 2328 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN, 2329 origin, sizeof (origin), &src, NULL, 0, B_FALSE); 2330 2331 if (strcmp(origin, fromname) == 0) { 2332 fromname = NULL; 2333 fromorigin = B_TRUE; 2334 } else { 2335 *cp = '\0'; 2336 if (cp != fromname && strcmp(argv[0], fromname)) { 2337 (void) fprintf(stderr, 2338 gettext("incremental source must be " 2339 "in same filesystem\n")); 2340 usage(B_FALSE); 2341 } 2342 fromname = cp + 1; 2343 if (strchr(fromname, '@') || strchr(fromname, '/')) { 2344 (void) fprintf(stderr, 2345 gettext("invalid incremental source\n")); 2346 usage(B_FALSE); 2347 } 2348 } 2349 } 2350 2351 if (replicate && fromname == NULL) 2352 doall = B_TRUE; 2353 2354 err = zfs_send(zhp, fromname, toname, replicate, doall, fromorigin, 2355 verbose, STDOUT_FILENO); 2356 zfs_close(zhp); 2357 2358 return (err != 0); 2359 } 2360 2361 /* 2362 * zfs receive [-dnvF] <fs@snap> 2363 * 2364 * Restore a backup stream from stdin. 2365 */ 2366 static int 2367 zfs_do_receive(int argc, char **argv) 2368 { 2369 int c, err; 2370 recvflags_t flags; 2371 2372 bzero(&flags, sizeof (recvflags_t)); 2373 /* check options */ 2374 while ((c = getopt(argc, argv, ":dnvF")) != -1) { 2375 switch (c) { 2376 case 'd': 2377 flags.isprefix = B_TRUE; 2378 break; 2379 case 'n': 2380 flags.dryrun = B_TRUE; 2381 break; 2382 case 'v': 2383 flags.verbose = B_TRUE; 2384 break; 2385 case 'F': 2386 flags.force = B_TRUE; 2387 break; 2388 case ':': 2389 (void) fprintf(stderr, gettext("missing argument for " 2390 "'%c' option\n"), optopt); 2391 usage(B_FALSE); 2392 break; 2393 case '?': 2394 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2395 optopt); 2396 usage(B_FALSE); 2397 } 2398 } 2399 2400 argc -= optind; 2401 argv += optind; 2402 2403 /* check number of arguments */ 2404 if (argc < 1) { 2405 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2406 usage(B_FALSE); 2407 } 2408 if (argc > 1) { 2409 (void) fprintf(stderr, gettext("too many arguments\n")); 2410 usage(B_FALSE); 2411 } 2412 2413 if (isatty(STDIN_FILENO)) { 2414 (void) fprintf(stderr, 2415 gettext("Error: Backup stream can not be read " 2416 "from a terminal.\n" 2417 "You must redirect standard input.\n")); 2418 return (1); 2419 } 2420 2421 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL); 2422 2423 return (err != 0); 2424 } 2425 2426 typedef struct allow_cb { 2427 int a_permcnt; 2428 size_t a_treeoffset; 2429 } allow_cb_t; 2430 2431 static void 2432 zfs_print_perms(avl_tree_t *tree) 2433 { 2434 zfs_perm_node_t *permnode; 2435 2436 permnode = avl_first(tree); 2437 while (permnode != NULL) { 2438 (void) printf("%s", permnode->z_pname); 2439 permnode = AVL_NEXT(tree, permnode); 2440 if (permnode) 2441 (void) printf(","); 2442 else 2443 (void) printf("\n"); 2444 } 2445 } 2446 2447 /* 2448 * Iterate over user/groups/everyone/... and the call perm_iter 2449 * function to print actual permission when tree has >0 nodes. 2450 */ 2451 static void 2452 zfs_iter_perms(avl_tree_t *tree, const char *banner, allow_cb_t *cb) 2453 { 2454 zfs_allow_node_t *item; 2455 avl_tree_t *ptree; 2456 2457 item = avl_first(tree); 2458 while (item) { 2459 ptree = (void *)((char *)item + cb->a_treeoffset); 2460 if (avl_numnodes(ptree)) { 2461 if (cb->a_permcnt++ == 0) 2462 (void) printf("%s\n", banner); 2463 (void) printf("\t%s", item->z_key); 2464 /* 2465 * Avoid an extra space being printed 2466 * for "everyone" which is keyed with a null 2467 * string 2468 */ 2469 if (item->z_key[0] != '\0') 2470 (void) printf(" "); 2471 zfs_print_perms(ptree); 2472 } 2473 item = AVL_NEXT(tree, item); 2474 } 2475 } 2476 2477 #define LINES "-------------------------------------------------------------\n" 2478 static int 2479 zfs_print_allows(char *ds) 2480 { 2481 zfs_allow_t *curperms, *perms; 2482 zfs_handle_t *zhp; 2483 allow_cb_t allowcb = { 0 }; 2484 char banner[MAXPATHLEN]; 2485 2486 if (ds[0] == '-') 2487 usage(B_FALSE); 2488 2489 if (strrchr(ds, '@')) { 2490 (void) fprintf(stderr, gettext("Snapshots don't have 'allow'" 2491 " permissions\n")); 2492 return (1); 2493 } 2494 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL) 2495 return (1); 2496 2497 if (zfs_perm_get(zhp, &perms)) { 2498 (void) fprintf(stderr, 2499 gettext("Failed to retrieve 'allows' on %s\n"), ds); 2500 zfs_close(zhp); 2501 return (1); 2502 } 2503 2504 zfs_close(zhp); 2505 2506 if (perms != NULL) 2507 (void) printf("%s", LINES); 2508 for (curperms = perms; curperms; curperms = curperms->z_next) { 2509 2510 (void) snprintf(banner, sizeof (banner), 2511 "Permission sets on (%s)", curperms->z_setpoint); 2512 allowcb.a_treeoffset = 2513 offsetof(zfs_allow_node_t, z_localdescend); 2514 allowcb.a_permcnt = 0; 2515 zfs_iter_perms(&curperms->z_sets, banner, &allowcb); 2516 2517 (void) snprintf(banner, sizeof (banner), 2518 "Create time permissions on (%s)", curperms->z_setpoint); 2519 allowcb.a_treeoffset = 2520 offsetof(zfs_allow_node_t, z_localdescend); 2521 allowcb.a_permcnt = 0; 2522 zfs_iter_perms(&curperms->z_crperms, banner, &allowcb); 2523 2524 2525 (void) snprintf(banner, sizeof (banner), 2526 "Local permissions on (%s)", curperms->z_setpoint); 2527 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_local); 2528 allowcb.a_permcnt = 0; 2529 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2530 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2531 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2532 2533 (void) snprintf(banner, sizeof (banner), 2534 "Descendent permissions on (%s)", curperms->z_setpoint); 2535 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_descend); 2536 allowcb.a_permcnt = 0; 2537 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2538 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2539 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2540 2541 (void) snprintf(banner, sizeof (banner), 2542 "Local+Descendent permissions on (%s)", 2543 curperms->z_setpoint); 2544 allowcb.a_treeoffset = 2545 offsetof(zfs_allow_node_t, z_localdescend); 2546 allowcb.a_permcnt = 0; 2547 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2548 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2549 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2550 2551 (void) printf("%s", LINES); 2552 } 2553 zfs_free_allows(perms); 2554 return (0); 2555 } 2556 2557 #define ALLOWOPTIONS "ldcsu:g:e" 2558 #define UNALLOWOPTIONS "ldcsu:g:er" 2559 2560 /* 2561 * Validate options, and build necessary datastructure to display/remove/add 2562 * permissions. 2563 * Returns 0 - If permissions should be added/removed 2564 * Returns 1 - If permissions should be displayed. 2565 * Returns -1 - on failure 2566 */ 2567 int 2568 parse_allow_args(int *argc, char **argv[], boolean_t unallow, 2569 char **ds, int *recurse, nvlist_t **zperms) 2570 { 2571 int c; 2572 char *options = unallow ? UNALLOWOPTIONS : ALLOWOPTIONS; 2573 zfs_deleg_inherit_t deleg_type = ZFS_DELEG_NONE; 2574 zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN; 2575 char *who = NULL; 2576 char *perms = NULL; 2577 zfs_handle_t *zhp; 2578 2579 while ((c = getopt(*argc, *argv, options)) != -1) { 2580 switch (c) { 2581 case 'l': 2582 if (who_type == ZFS_DELEG_CREATE || 2583 who_type == ZFS_DELEG_NAMED_SET) 2584 usage(B_FALSE); 2585 2586 deleg_type |= ZFS_DELEG_PERM_LOCAL; 2587 break; 2588 case 'd': 2589 if (who_type == ZFS_DELEG_CREATE || 2590 who_type == ZFS_DELEG_NAMED_SET) 2591 usage(B_FALSE); 2592 2593 deleg_type |= ZFS_DELEG_PERM_DESCENDENT; 2594 break; 2595 case 'r': 2596 *recurse = B_TRUE; 2597 break; 2598 case 'c': 2599 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2600 usage(B_FALSE); 2601 if (deleg_type) 2602 usage(B_FALSE); 2603 who_type = ZFS_DELEG_CREATE; 2604 break; 2605 case 's': 2606 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2607 usage(B_FALSE); 2608 if (deleg_type) 2609 usage(B_FALSE); 2610 who_type = ZFS_DELEG_NAMED_SET; 2611 break; 2612 case 'u': 2613 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2614 usage(B_FALSE); 2615 who_type = ZFS_DELEG_USER; 2616 who = optarg; 2617 break; 2618 case 'g': 2619 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2620 usage(B_FALSE); 2621 who_type = ZFS_DELEG_GROUP; 2622 who = optarg; 2623 break; 2624 case 'e': 2625 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2626 usage(B_FALSE); 2627 who_type = ZFS_DELEG_EVERYONE; 2628 break; 2629 default: 2630 usage(B_FALSE); 2631 break; 2632 } 2633 } 2634 2635 if (deleg_type == 0) 2636 deleg_type = ZFS_DELEG_PERM_LOCALDESCENDENT; 2637 2638 *argc -= optind; 2639 *argv += optind; 2640 2641 if (unallow == B_FALSE && *argc == 1) { 2642 /* 2643 * Only print permissions if no options were processed 2644 */ 2645 if (optind == 1) 2646 return (1); 2647 else 2648 usage(B_FALSE); 2649 } 2650 2651 /* 2652 * initialize variables for zfs_build_perms based on number 2653 * of arguments. 2654 * 3 arguments ==> zfs [un]allow joe perm,perm,perm <dataset> or 2655 * zfs [un]allow -s @set1 perm,perm <dataset> 2656 * 2 arguments ==> zfs [un]allow -c perm,perm <dataset> or 2657 * zfs [un]allow -u|-g <name> perm <dataset> or 2658 * zfs [un]allow -e perm,perm <dataset> 2659 * zfs unallow joe <dataset> 2660 * zfs unallow -s @set1 <dataset> 2661 * 1 argument ==> zfs [un]allow -e <dataset> or 2662 * zfs [un]allow -c <dataset> 2663 */ 2664 2665 switch (*argc) { 2666 case 3: 2667 perms = (*argv)[1]; 2668 who = (*argv)[0]; 2669 *ds = (*argv)[2]; 2670 2671 /* 2672 * advance argc/argv for do_allow cases. 2673 * for do_allow case make sure who have a know who type 2674 * and its not a permission set. 2675 */ 2676 if (unallow == B_TRUE) { 2677 *argc -= 2; 2678 *argv += 2; 2679 } else if (who_type != ZFS_DELEG_WHO_UNKNOWN && 2680 who_type != ZFS_DELEG_NAMED_SET) 2681 usage(B_FALSE); 2682 break; 2683 2684 case 2: 2685 if (unallow == B_TRUE && (who_type == ZFS_DELEG_EVERYONE || 2686 who_type == ZFS_DELEG_CREATE || who != NULL)) { 2687 perms = (*argv)[0]; 2688 *ds = (*argv)[1]; 2689 } else { 2690 if (unallow == B_FALSE && 2691 (who_type == ZFS_DELEG_WHO_UNKNOWN || 2692 who_type == ZFS_DELEG_NAMED_SET)) 2693 usage(B_FALSE); 2694 else if (who_type == ZFS_DELEG_WHO_UNKNOWN || 2695 who_type == ZFS_DELEG_NAMED_SET) 2696 who = (*argv)[0]; 2697 else if (who_type != ZFS_DELEG_NAMED_SET) 2698 perms = (*argv)[0]; 2699 *ds = (*argv)[1]; 2700 } 2701 if (unallow == B_TRUE) { 2702 (*argc)--; 2703 (*argv)++; 2704 } 2705 break; 2706 2707 case 1: 2708 if (unallow == B_FALSE) 2709 usage(B_FALSE); 2710 if (who == NULL && who_type != ZFS_DELEG_CREATE && 2711 who_type != ZFS_DELEG_EVERYONE) 2712 usage(B_FALSE); 2713 *ds = (*argv)[0]; 2714 break; 2715 2716 default: 2717 usage(B_FALSE); 2718 } 2719 2720 if (strrchr(*ds, '@')) { 2721 (void) fprintf(stderr, 2722 gettext("Can't set or remove 'allow' permissions " 2723 "on snapshots.\n")); 2724 return (-1); 2725 } 2726 2727 if ((zhp = zfs_open(g_zfs, *ds, ZFS_TYPE_DATASET)) == NULL) 2728 return (-1); 2729 2730 if ((zfs_build_perms(zhp, who, perms, 2731 who_type, deleg_type, zperms)) != 0) { 2732 zfs_close(zhp); 2733 return (-1); 2734 } 2735 zfs_close(zhp); 2736 return (0); 2737 } 2738 2739 static int 2740 zfs_do_allow(int argc, char **argv) 2741 { 2742 char *ds; 2743 nvlist_t *zperms = NULL; 2744 zfs_handle_t *zhp; 2745 int unused; 2746 int ret; 2747 2748 if ((ret = parse_allow_args(&argc, &argv, B_FALSE, &ds, 2749 &unused, &zperms)) == -1) 2750 return (1); 2751 2752 if (ret == 1) 2753 return (zfs_print_allows(argv[0])); 2754 2755 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL) 2756 return (1); 2757 2758 if (zfs_perm_set(zhp, zperms)) { 2759 zfs_close(zhp); 2760 nvlist_free(zperms); 2761 return (1); 2762 } 2763 nvlist_free(zperms); 2764 zfs_close(zhp); 2765 2766 return (0); 2767 } 2768 2769 static int 2770 unallow_callback(zfs_handle_t *zhp, void *data) 2771 { 2772 nvlist_t *nvp = (nvlist_t *)data; 2773 int error; 2774 2775 error = zfs_perm_remove(zhp, nvp); 2776 if (error) { 2777 (void) fprintf(stderr, gettext("Failed to remove permissions " 2778 "on %s\n"), zfs_get_name(zhp)); 2779 } 2780 return (error); 2781 } 2782 2783 static int 2784 zfs_do_unallow(int argc, char **argv) 2785 { 2786 int recurse = B_FALSE; 2787 char *ds; 2788 int error; 2789 nvlist_t *zperms = NULL; 2790 2791 if (parse_allow_args(&argc, &argv, B_TRUE, 2792 &ds, &recurse, &zperms) == -1) 2793 return (1); 2794 2795 error = zfs_for_each(argc, argv, recurse, 2796 ZFS_TYPE_FILESYSTEM|ZFS_TYPE_VOLUME, NULL, 2797 NULL, unallow_callback, (void *)zperms, B_FALSE); 2798 2799 if (zperms) 2800 nvlist_free(zperms); 2801 2802 return (error); 2803 } 2804 2805 typedef struct get_all_cbdata { 2806 zfs_handle_t **cb_handles; 2807 size_t cb_alloc; 2808 size_t cb_used; 2809 uint_t cb_types; 2810 boolean_t cb_verbose; 2811 } get_all_cbdata_t; 2812 2813 #define CHECK_SPINNER 30 2814 #define SPINNER_TIME 3 /* seconds */ 2815 #define MOUNT_TIME 5 /* seconds */ 2816 2817 static int 2818 get_one_dataset(zfs_handle_t *zhp, void *data) 2819 { 2820 static char spin[] = { '-', '\\', '|', '/' }; 2821 static int spinval = 0; 2822 static int spincheck = 0; 2823 static time_t last_spin_time = (time_t)0; 2824 get_all_cbdata_t *cbp = data; 2825 zfs_type_t type = zfs_get_type(zhp); 2826 2827 if (cbp->cb_verbose) { 2828 if (--spincheck < 0) { 2829 time_t now = time(NULL); 2830 if (last_spin_time + SPINNER_TIME < now) { 2831 (void) printf("\b%c", spin[spinval++ % 4]); 2832 (void) fflush(stdout); 2833 last_spin_time = now; 2834 } 2835 spincheck = CHECK_SPINNER; 2836 } 2837 } 2838 2839 /* 2840 * Interate over any nested datasets. 2841 */ 2842 if (type == ZFS_TYPE_FILESYSTEM && 2843 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) { 2844 zfs_close(zhp); 2845 return (1); 2846 } 2847 2848 /* 2849 * Skip any datasets whose type does not match. 2850 */ 2851 if ((type & cbp->cb_types) == 0) { 2852 zfs_close(zhp); 2853 return (0); 2854 } 2855 2856 if (cbp->cb_alloc == cbp->cb_used) { 2857 zfs_handle_t **handles; 2858 2859 if (cbp->cb_alloc == 0) 2860 cbp->cb_alloc = 64; 2861 else 2862 cbp->cb_alloc *= 2; 2863 2864 handles = safe_malloc(cbp->cb_alloc * sizeof (void *)); 2865 2866 if (cbp->cb_handles) { 2867 bcopy(cbp->cb_handles, handles, 2868 cbp->cb_used * sizeof (void *)); 2869 free(cbp->cb_handles); 2870 } 2871 2872 cbp->cb_handles = handles; 2873 } 2874 2875 cbp->cb_handles[cbp->cb_used++] = zhp; 2876 2877 return (0); 2878 } 2879 2880 static void 2881 get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count, 2882 boolean_t verbose) 2883 { 2884 get_all_cbdata_t cb = { 0 }; 2885 cb.cb_types = types; 2886 cb.cb_verbose = verbose; 2887 2888 if (verbose) { 2889 (void) printf("%s: *", gettext("Reading ZFS config")); 2890 (void) fflush(stdout); 2891 } 2892 2893 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb); 2894 2895 *dslist = cb.cb_handles; 2896 *count = cb.cb_used; 2897 2898 if (verbose) { 2899 (void) printf("\b%s\n", gettext("done.")); 2900 } 2901 } 2902 2903 static int 2904 dataset_cmp(const void *a, const void *b) 2905 { 2906 zfs_handle_t **za = (zfs_handle_t **)a; 2907 zfs_handle_t **zb = (zfs_handle_t **)b; 2908 char mounta[MAXPATHLEN]; 2909 char mountb[MAXPATHLEN]; 2910 boolean_t gota, gotb; 2911 2912 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0) 2913 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta, 2914 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0); 2915 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0) 2916 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb, 2917 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0); 2918 2919 if (gota && gotb) 2920 return (strcmp(mounta, mountb)); 2921 2922 if (gota) 2923 return (-1); 2924 if (gotb) 2925 return (1); 2926 2927 return (strcmp(zfs_get_name(a), zfs_get_name(b))); 2928 } 2929 2930 /* 2931 * Generic callback for sharing or mounting filesystems. Because the code is so 2932 * similar, we have a common function with an extra parameter to determine which 2933 * mode we are using. 2934 */ 2935 #define OP_SHARE 0x1 2936 #define OP_MOUNT 0x2 2937 2938 /* 2939 * Share or mount a dataset. 2940 */ 2941 static int 2942 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol, 2943 boolean_t explicit, const char *options) 2944 { 2945 char mountpoint[ZFS_MAXPROPLEN]; 2946 char shareopts[ZFS_MAXPROPLEN]; 2947 char smbshareopts[ZFS_MAXPROPLEN]; 2948 const char *cmdname = op == OP_SHARE ? "share" : "mount"; 2949 struct mnttab mnt; 2950 uint64_t zoned, canmount; 2951 zfs_type_t type = zfs_get_type(zhp); 2952 boolean_t shared_nfs, shared_smb; 2953 2954 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)); 2955 2956 if (type == ZFS_TYPE_FILESYSTEM) { 2957 /* 2958 * Check to make sure we can mount/share this dataset. If we 2959 * are in the global zone and the filesystem is exported to a 2960 * local zone, or if we are in a local zone and the 2961 * filesystem is not exported, then it is an error. 2962 */ 2963 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 2964 2965 if (zoned && getzoneid() == GLOBAL_ZONEID) { 2966 if (!explicit) 2967 return (0); 2968 2969 (void) fprintf(stderr, gettext("cannot %s '%s': " 2970 "dataset is exported to a local zone\n"), cmdname, 2971 zfs_get_name(zhp)); 2972 return (1); 2973 2974 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) { 2975 if (!explicit) 2976 return (0); 2977 2978 (void) fprintf(stderr, gettext("cannot %s '%s': " 2979 "permission denied\n"), cmdname, 2980 zfs_get_name(zhp)); 2981 return (1); 2982 } 2983 2984 /* 2985 * Ignore any filesystems which don't apply to us. This 2986 * includes those with a legacy mountpoint, or those with 2987 * legacy share options. 2988 */ 2989 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 2990 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0); 2991 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts, 2992 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 2993 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts, 2994 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0); 2995 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 2996 2997 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 && 2998 strcmp(smbshareopts, "off") == 0) { 2999 if (!explicit) 3000 return (0); 3001 3002 (void) fprintf(stderr, gettext("cannot share '%s': " 3003 "legacy share\n"), zfs_get_name(zhp)); 3004 (void) fprintf(stderr, gettext("use share(1M) to " 3005 "share this filesystem\n")); 3006 return (1); 3007 } 3008 3009 /* 3010 * We cannot share or mount legacy filesystems. If the 3011 * shareopts is non-legacy but the mountpoint is legacy, we 3012 * treat it as a legacy share. 3013 */ 3014 if (strcmp(mountpoint, "legacy") == 0) { 3015 if (!explicit) 3016 return (0); 3017 3018 (void) fprintf(stderr, gettext("cannot %s '%s': " 3019 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp)); 3020 (void) fprintf(stderr, gettext("use %s(1M) to " 3021 "%s this filesystem\n"), cmdname, cmdname); 3022 return (1); 3023 } 3024 3025 if (strcmp(mountpoint, "none") == 0) { 3026 if (!explicit) 3027 return (0); 3028 3029 (void) fprintf(stderr, gettext("cannot %s '%s': no " 3030 "mountpoint set\n"), cmdname, zfs_get_name(zhp)); 3031 return (1); 3032 } 3033 3034 /* 3035 * canmount explicit outcome 3036 * on no pass through 3037 * on yes pass through 3038 * off no return 0 3039 * off yes display error, return 1 3040 * noauto no return 0 3041 * noauto yes pass through 3042 */ 3043 if (canmount == ZFS_CANMOUNT_OFF) { 3044 if (!explicit) 3045 return (0); 3046 3047 (void) fprintf(stderr, gettext("cannot %s '%s': " 3048 "'canmount' property is set to 'off'\n"), cmdname, 3049 zfs_get_name(zhp)); 3050 return (1); 3051 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) { 3052 return (0); 3053 } 3054 3055 /* 3056 * At this point, we have verified that the mountpoint and/or 3057 * shareopts are appropriate for auto management. If the 3058 * filesystem is already mounted or shared, return (failing 3059 * for explicit requests); otherwise mount or share the 3060 * filesystem. 3061 */ 3062 switch (op) { 3063 case OP_SHARE: 3064 3065 shared_nfs = zfs_is_shared_nfs(zhp, NULL); 3066 shared_smb = zfs_is_shared_smb(zhp, NULL); 3067 3068 if (shared_nfs && shared_smb || 3069 (shared_nfs && strcmp(shareopts, "on") == 0 && 3070 strcmp(smbshareopts, "off") == 0) || 3071 (shared_smb && strcmp(smbshareopts, "on") == 0 && 3072 strcmp(shareopts, "off") == 0)) { 3073 if (!explicit) 3074 return (0); 3075 3076 (void) fprintf(stderr, gettext("cannot share " 3077 "'%s': filesystem already shared\n"), 3078 zfs_get_name(zhp)); 3079 return (1); 3080 } 3081 3082 if (!zfs_is_mounted(zhp, NULL) && 3083 zfs_mount(zhp, NULL, 0) != 0) 3084 return (1); 3085 3086 if (protocol == NULL) { 3087 if (zfs_shareall(zhp) != 0) 3088 return (1); 3089 } else if (strcmp(protocol, "nfs") == 0) { 3090 if (zfs_share_nfs(zhp)) 3091 return (1); 3092 } else if (strcmp(protocol, "smb") == 0) { 3093 if (zfs_share_smb(zhp)) 3094 return (1); 3095 } else { 3096 (void) fprintf(stderr, gettext("cannot share " 3097 "'%s': invalid share type '%s' " 3098 "specified\n"), 3099 zfs_get_name(zhp), protocol); 3100 return (1); 3101 } 3102 3103 break; 3104 3105 case OP_MOUNT: 3106 if (options == NULL) 3107 mnt.mnt_mntopts = ""; 3108 else 3109 mnt.mnt_mntopts = (char *)options; 3110 3111 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) && 3112 zfs_is_mounted(zhp, NULL)) { 3113 if (!explicit) 3114 return (0); 3115 3116 (void) fprintf(stderr, gettext("cannot mount " 3117 "'%s': filesystem already mounted\n"), 3118 zfs_get_name(zhp)); 3119 return (1); 3120 } 3121 3122 if (zfs_mount(zhp, options, flags) != 0) 3123 return (1); 3124 break; 3125 } 3126 } else { 3127 assert(op == OP_SHARE); 3128 3129 /* 3130 * Ignore any volumes that aren't shared. 3131 */ 3132 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts, 3133 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3134 3135 if (strcmp(shareopts, "off") == 0) { 3136 if (!explicit) 3137 return (0); 3138 3139 (void) fprintf(stderr, gettext("cannot share '%s': " 3140 "'shareiscsi' property not set\n"), 3141 zfs_get_name(zhp)); 3142 (void) fprintf(stderr, gettext("set 'shareiscsi' " 3143 "property or use iscsitadm(1M) to share this " 3144 "volume\n")); 3145 return (1); 3146 } 3147 3148 if (zfs_is_shared_iscsi(zhp)) { 3149 if (!explicit) 3150 return (0); 3151 3152 (void) fprintf(stderr, gettext("cannot share " 3153 "'%s': volume already shared\n"), 3154 zfs_get_name(zhp)); 3155 return (1); 3156 } 3157 3158 if (zfs_share_iscsi(zhp) != 0) 3159 return (1); 3160 } 3161 3162 return (0); 3163 } 3164 3165 /* 3166 * Reports progress in the form "(current/total)". Not thread-safe. 3167 */ 3168 static void 3169 report_mount_progress(int current, int total) 3170 { 3171 static int len; 3172 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b" 3173 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"; 3174 static time_t last_progress_time; 3175 time_t now = time(NULL); 3176 3177 /* report 1..n instead of 0..n-1 */ 3178 ++current; 3179 3180 /* display header if we're here for the first time */ 3181 if (current == 1) { 3182 (void) printf(gettext("Mounting ZFS filesystems: ")); 3183 len = 0; 3184 } else if (current != total && last_progress_time + MOUNT_TIME >= now) { 3185 /* too soon to report again */ 3186 return; 3187 } 3188 3189 last_progress_time = now; 3190 3191 /* back up to prepare for overwriting */ 3192 if (len) 3193 (void) printf("%*.*s", len, len, reverse); 3194 3195 /* We put a newline at the end if this is the last one. */ 3196 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : ""); 3197 (void) fflush(stdout); 3198 } 3199 3200 static int 3201 share_mount(int op, int argc, char **argv) 3202 { 3203 int do_all = 0; 3204 boolean_t verbose = B_FALSE; 3205 int c, ret = 0; 3206 const char *options = NULL; 3207 int types, flags = 0; 3208 3209 /* check options */ 3210 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a")) 3211 != -1) { 3212 switch (c) { 3213 case 'a': 3214 do_all = 1; 3215 break; 3216 case 'v': 3217 verbose = B_TRUE; 3218 break; 3219 case 'o': 3220 if (strlen(optarg) <= MNT_LINE_MAX) { 3221 options = optarg; 3222 break; 3223 } 3224 (void) fprintf(stderr, gettext("the opts argument for " 3225 "'%c' option is too long (more than %d chars)\n"), 3226 optopt, MNT_LINE_MAX); 3227 usage(B_FALSE); 3228 break; 3229 3230 case 'O': 3231 flags |= MS_OVERLAY; 3232 break; 3233 case ':': 3234 (void) fprintf(stderr, gettext("missing argument for " 3235 "'%c' option\n"), optopt); 3236 usage(B_FALSE); 3237 break; 3238 case '?': 3239 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3240 optopt); 3241 usage(B_FALSE); 3242 } 3243 } 3244 3245 argc -= optind; 3246 argv += optind; 3247 3248 /* check number of arguments */ 3249 if (do_all) { 3250 zfs_handle_t **dslist = NULL; 3251 size_t i, count = 0; 3252 char *protocol = NULL; 3253 3254 if (op == OP_MOUNT) { 3255 types = ZFS_TYPE_FILESYSTEM; 3256 } else if (argc > 0) { 3257 if (strcmp(argv[0], "nfs") == 0 || 3258 strcmp(argv[0], "smb") == 0) { 3259 types = ZFS_TYPE_FILESYSTEM; 3260 } else if (strcmp(argv[0], "iscsi") == 0) { 3261 types = ZFS_TYPE_VOLUME; 3262 } else { 3263 (void) fprintf(stderr, gettext("share type " 3264 "must be 'nfs', 'smb' or 'iscsi'\n")); 3265 usage(B_FALSE); 3266 } 3267 protocol = argv[0]; 3268 argc--; 3269 argv++; 3270 } else { 3271 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME; 3272 } 3273 3274 if (argc != 0) { 3275 (void) fprintf(stderr, gettext("too many arguments\n")); 3276 usage(B_FALSE); 3277 } 3278 3279 get_all_datasets(types, &dslist, &count, verbose); 3280 3281 if (count == 0) 3282 return (0); 3283 3284 qsort(dslist, count, sizeof (void *), dataset_cmp); 3285 3286 for (i = 0; i < count; i++) { 3287 if (verbose) 3288 report_mount_progress(i, count); 3289 3290 if (share_mount_one(dslist[i], op, flags, protocol, 3291 B_FALSE, options) != 0) 3292 ret = 1; 3293 zfs_close(dslist[i]); 3294 } 3295 3296 free(dslist); 3297 } else if (argc == 0) { 3298 struct mnttab entry; 3299 3300 if ((op == OP_SHARE) || (options != NULL)) { 3301 (void) fprintf(stderr, gettext("missing filesystem " 3302 "argument (specify -a for all)\n")); 3303 usage(B_FALSE); 3304 } 3305 3306 /* 3307 * When mount is given no arguments, go through /etc/mnttab and 3308 * display any active ZFS mounts. We hide any snapshots, since 3309 * they are controlled automatically. 3310 */ 3311 rewind(mnttab_file); 3312 while (getmntent(mnttab_file, &entry) == 0) { 3313 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 || 3314 strchr(entry.mnt_special, '@') != NULL) 3315 continue; 3316 3317 (void) printf("%-30s %s\n", entry.mnt_special, 3318 entry.mnt_mountp); 3319 } 3320 3321 } else { 3322 zfs_handle_t *zhp; 3323 3324 types = ZFS_TYPE_FILESYSTEM; 3325 if (op == OP_SHARE) 3326 types |= ZFS_TYPE_VOLUME; 3327 3328 if (argc > 1) { 3329 (void) fprintf(stderr, 3330 gettext("too many arguments\n")); 3331 usage(B_FALSE); 3332 } 3333 3334 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) { 3335 ret = 1; 3336 } else { 3337 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE, 3338 options); 3339 zfs_close(zhp); 3340 } 3341 } 3342 3343 return (ret); 3344 } 3345 3346 /* 3347 * zfs mount -a [nfs | iscsi] 3348 * zfs mount filesystem 3349 * 3350 * Mount all filesystems, or mount the given filesystem. 3351 */ 3352 static int 3353 zfs_do_mount(int argc, char **argv) 3354 { 3355 return (share_mount(OP_MOUNT, argc, argv)); 3356 } 3357 3358 /* 3359 * zfs share -a [nfs | iscsi | smb] 3360 * zfs share filesystem 3361 * 3362 * Share all filesystems, or share the given filesystem. 3363 */ 3364 static int 3365 zfs_do_share(int argc, char **argv) 3366 { 3367 return (share_mount(OP_SHARE, argc, argv)); 3368 } 3369 3370 typedef struct unshare_unmount_node { 3371 zfs_handle_t *un_zhp; 3372 char *un_mountp; 3373 uu_avl_node_t un_avlnode; 3374 } unshare_unmount_node_t; 3375 3376 /* ARGSUSED */ 3377 static int 3378 unshare_unmount_compare(const void *larg, const void *rarg, void *unused) 3379 { 3380 const unshare_unmount_node_t *l = larg; 3381 const unshare_unmount_node_t *r = rarg; 3382 3383 return (strcmp(l->un_mountp, r->un_mountp)); 3384 } 3385 3386 /* 3387 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an 3388 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem, 3389 * and unmount it appropriately. 3390 */ 3391 static int 3392 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual) 3393 { 3394 zfs_handle_t *zhp; 3395 int ret; 3396 struct stat64 statbuf; 3397 struct extmnttab entry; 3398 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount"; 3399 char nfs_mnt_prop[ZFS_MAXPROPLEN]; 3400 char smbshare_prop[ZFS_MAXPROPLEN]; 3401 3402 /* 3403 * Search for the path in /etc/mnttab. Rather than looking for the 3404 * specific path, which can be fooled by non-standard paths (i.e. ".." 3405 * or "//"), we stat() the path and search for the corresponding 3406 * (major,minor) device pair. 3407 */ 3408 if (stat64(path, &statbuf) != 0) { 3409 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3410 cmdname, path, strerror(errno)); 3411 return (1); 3412 } 3413 3414 /* 3415 * Search for the given (major,minor) pair in the mount table. 3416 */ 3417 rewind(mnttab_file); 3418 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) { 3419 if (entry.mnt_major == major(statbuf.st_dev) && 3420 entry.mnt_minor == minor(statbuf.st_dev)) 3421 break; 3422 } 3423 if (ret != 0) { 3424 if (op == OP_SHARE) { 3425 (void) fprintf(stderr, gettext("cannot %s '%s': not " 3426 "currently mounted\n"), cmdname, path); 3427 return (1); 3428 } 3429 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"), 3430 path); 3431 if ((ret = umount2(path, flags)) != 0) 3432 (void) fprintf(stderr, gettext("%s: %s\n"), path, 3433 strerror(errno)); 3434 return (ret != 0); 3435 } 3436 3437 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) { 3438 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS " 3439 "filesystem\n"), cmdname, path); 3440 return (1); 3441 } 3442 3443 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3444 ZFS_TYPE_FILESYSTEM)) == NULL) 3445 return (1); 3446 3447 verify(zfs_prop_get(zhp, op == OP_SHARE ? 3448 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, nfs_mnt_prop, 3449 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0); 3450 verify(zfs_prop_get(zhp, op == OP_SHARE ? 3451 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, smbshare_prop, 3452 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0); 3453 3454 if (op == OP_SHARE) { 3455 if (strcmp(nfs_mnt_prop, "off") == 0 && 3456 strcmp(smbshare_prop, "off") == 0) { 3457 (void) fprintf(stderr, gettext("cannot unshare " 3458 "'%s': legacy share\n"), path); 3459 (void) fprintf(stderr, gettext("use " 3460 "unshare(1M) to unshare this filesystem\n")); 3461 ret = 1; 3462 } else if (!zfs_is_shared(zhp)) { 3463 (void) fprintf(stderr, gettext("cannot unshare '%s': " 3464 "not currently shared\n"), path); 3465 ret = 1; 3466 } else { 3467 ret = zfs_unshareall_bypath(zhp, path); 3468 } 3469 } else { 3470 if (is_manual) { 3471 ret = zfs_unmount(zhp, NULL, flags); 3472 } else if (strcmp(nfs_mnt_prop, "legacy") == 0) { 3473 (void) fprintf(stderr, gettext("cannot unmount " 3474 "'%s': legacy mountpoint\n"), 3475 zfs_get_name(zhp)); 3476 (void) fprintf(stderr, gettext("use umount(1M) " 3477 "to unmount this filesystem\n")); 3478 ret = 1; 3479 } else { 3480 ret = zfs_unmountall(zhp, flags); 3481 } 3482 } 3483 3484 zfs_close(zhp); 3485 3486 return (ret != 0); 3487 } 3488 3489 /* 3490 * Generic callback for unsharing or unmounting a filesystem. 3491 */ 3492 static int 3493 unshare_unmount(int op, int argc, char **argv) 3494 { 3495 int do_all = 0; 3496 int flags = 0; 3497 int ret = 0; 3498 int types, c; 3499 zfs_handle_t *zhp; 3500 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN]; 3501 char sharesmb[ZFS_MAXPROPLEN]; 3502 3503 /* check options */ 3504 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) { 3505 switch (c) { 3506 case 'a': 3507 do_all = 1; 3508 break; 3509 case 'f': 3510 flags = MS_FORCE; 3511 break; 3512 case '?': 3513 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3514 optopt); 3515 usage(B_FALSE); 3516 } 3517 } 3518 3519 argc -= optind; 3520 argv += optind; 3521 3522 if (do_all) { 3523 /* 3524 * We could make use of zfs_for_each() to walk all datasets in 3525 * the system, but this would be very inefficient, especially 3526 * since we would have to linearly search /etc/mnttab for each 3527 * one. Instead, do one pass through /etc/mnttab looking for 3528 * zfs entries and call zfs_unmount() for each one. 3529 * 3530 * Things get a little tricky if the administrator has created 3531 * mountpoints beneath other ZFS filesystems. In this case, we 3532 * have to unmount the deepest filesystems first. To accomplish 3533 * this, we place all the mountpoints in an AVL tree sorted by 3534 * the special type (dataset name), and walk the result in 3535 * reverse to make sure to get any snapshots first. 3536 */ 3537 struct mnttab entry; 3538 uu_avl_pool_t *pool; 3539 uu_avl_t *tree; 3540 unshare_unmount_node_t *node; 3541 uu_avl_index_t idx; 3542 uu_avl_walk_t *walk; 3543 3544 if (argc != 0) { 3545 (void) fprintf(stderr, gettext("too many arguments\n")); 3546 usage(B_FALSE); 3547 } 3548 3549 if ((pool = uu_avl_pool_create("unmount_pool", 3550 sizeof (unshare_unmount_node_t), 3551 offsetof(unshare_unmount_node_t, un_avlnode), 3552 unshare_unmount_compare, 3553 UU_DEFAULT)) == NULL) { 3554 (void) fprintf(stderr, gettext("internal error: " 3555 "out of memory\n")); 3556 exit(1); 3557 } 3558 3559 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) { 3560 (void) fprintf(stderr, gettext("internal error: " 3561 "out of memory\n")); 3562 exit(1); 3563 } 3564 3565 rewind(mnttab_file); 3566 while (getmntent(mnttab_file, &entry) == 0) { 3567 3568 /* ignore non-ZFS entries */ 3569 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 3570 continue; 3571 3572 /* ignore snapshots */ 3573 if (strchr(entry.mnt_special, '@') != NULL) 3574 continue; 3575 3576 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3577 ZFS_TYPE_FILESYSTEM)) == NULL) { 3578 ret = 1; 3579 continue; 3580 } 3581 3582 switch (op) { 3583 case OP_SHARE: 3584 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3585 nfsiscsi_mnt_prop, 3586 sizeof (nfsiscsi_mnt_prop), 3587 NULL, NULL, 0, B_FALSE) == 0); 3588 if (strcmp(nfsiscsi_mnt_prop, "off") != 0) 3589 break; 3590 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3591 nfsiscsi_mnt_prop, 3592 sizeof (nfsiscsi_mnt_prop), 3593 NULL, NULL, 0, B_FALSE) == 0); 3594 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) 3595 continue; 3596 break; 3597 case OP_MOUNT: 3598 /* Ignore legacy mounts */ 3599 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, 3600 nfsiscsi_mnt_prop, 3601 sizeof (nfsiscsi_mnt_prop), 3602 NULL, NULL, 0, B_FALSE) == 0); 3603 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) 3604 continue; 3605 /* Ignore canmount=noauto mounts */ 3606 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == 3607 ZFS_CANMOUNT_NOAUTO) 3608 continue; 3609 default: 3610 break; 3611 } 3612 3613 node = safe_malloc(sizeof (unshare_unmount_node_t)); 3614 node->un_zhp = zhp; 3615 3616 if ((node->un_mountp = strdup(entry.mnt_mountp)) == 3617 NULL) { 3618 (void) fprintf(stderr, gettext("internal error:" 3619 " out of memory\n")); 3620 exit(1); 3621 } 3622 3623 uu_avl_node_init(node, &node->un_avlnode, pool); 3624 3625 if (uu_avl_find(tree, node, NULL, &idx) == NULL) { 3626 uu_avl_insert(tree, node, idx); 3627 } else { 3628 zfs_close(node->un_zhp); 3629 free(node->un_mountp); 3630 free(node); 3631 } 3632 } 3633 3634 /* 3635 * Walk the AVL tree in reverse, unmounting each filesystem and 3636 * removing it from the AVL tree in the process. 3637 */ 3638 if ((walk = uu_avl_walk_start(tree, 3639 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) { 3640 (void) fprintf(stderr, 3641 gettext("internal error: out of memory")); 3642 exit(1); 3643 } 3644 3645 while ((node = uu_avl_walk_next(walk)) != NULL) { 3646 uu_avl_remove(tree, node); 3647 3648 switch (op) { 3649 case OP_SHARE: 3650 if (zfs_unshareall_bypath(node->un_zhp, 3651 node->un_mountp) != 0) 3652 ret = 1; 3653 break; 3654 3655 case OP_MOUNT: 3656 if (zfs_unmount(node->un_zhp, 3657 node->un_mountp, flags) != 0) 3658 ret = 1; 3659 break; 3660 } 3661 3662 zfs_close(node->un_zhp); 3663 free(node->un_mountp); 3664 free(node); 3665 } 3666 3667 uu_avl_walk_end(walk); 3668 uu_avl_destroy(tree); 3669 uu_avl_pool_destroy(pool); 3670 3671 if (op == OP_SHARE) { 3672 /* 3673 * Finally, unshare any volumes shared via iSCSI. 3674 */ 3675 zfs_handle_t **dslist = NULL; 3676 size_t i, count = 0; 3677 3678 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count, 3679 B_FALSE); 3680 3681 if (count != 0) { 3682 qsort(dslist, count, sizeof (void *), 3683 dataset_cmp); 3684 3685 for (i = 0; i < count; i++) { 3686 if (zfs_unshare_iscsi(dslist[i]) != 0) 3687 ret = 1; 3688 zfs_close(dslist[i]); 3689 } 3690 3691 free(dslist); 3692 } 3693 } 3694 } else { 3695 if (argc != 1) { 3696 if (argc == 0) 3697 (void) fprintf(stderr, 3698 gettext("missing filesystem argument\n")); 3699 else 3700 (void) fprintf(stderr, 3701 gettext("too many arguments\n")); 3702 usage(B_FALSE); 3703 } 3704 3705 /* 3706 * We have an argument, but it may be a full path or a ZFS 3707 * filesystem. Pass full paths off to unmount_path() (shared by 3708 * manual_unmount), otherwise open the filesystem and pass to 3709 * zfs_unmount(). 3710 */ 3711 if (argv[0][0] == '/') 3712 return (unshare_unmount_path(op, argv[0], 3713 flags, B_FALSE)); 3714 3715 types = ZFS_TYPE_FILESYSTEM; 3716 if (op == OP_SHARE) 3717 types |= ZFS_TYPE_VOLUME; 3718 3719 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) 3720 return (1); 3721 3722 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 3723 verify(zfs_prop_get(zhp, op == OP_SHARE ? 3724 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, 3725 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL, 3726 NULL, 0, B_FALSE) == 0); 3727 3728 switch (op) { 3729 case OP_SHARE: 3730 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3731 nfsiscsi_mnt_prop, 3732 sizeof (nfsiscsi_mnt_prop), 3733 NULL, NULL, 0, B_FALSE) == 0); 3734 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3735 sharesmb, sizeof (sharesmb), NULL, NULL, 3736 0, B_FALSE) == 0); 3737 3738 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 && 3739 strcmp(sharesmb, "off") == 0) { 3740 (void) fprintf(stderr, gettext("cannot " 3741 "unshare '%s': legacy share\n"), 3742 zfs_get_name(zhp)); 3743 (void) fprintf(stderr, gettext("use " 3744 "unshare(1M) to unshare this " 3745 "filesystem\n")); 3746 ret = 1; 3747 } else if (!zfs_is_shared(zhp)) { 3748 (void) fprintf(stderr, gettext("cannot " 3749 "unshare '%s': not currently " 3750 "shared\n"), zfs_get_name(zhp)); 3751 ret = 1; 3752 } else if (zfs_unshareall(zhp) != 0) { 3753 ret = 1; 3754 } 3755 break; 3756 3757 case OP_MOUNT: 3758 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) { 3759 (void) fprintf(stderr, gettext("cannot " 3760 "unmount '%s': legacy " 3761 "mountpoint\n"), zfs_get_name(zhp)); 3762 (void) fprintf(stderr, gettext("use " 3763 "umount(1M) to unmount this " 3764 "filesystem\n")); 3765 ret = 1; 3766 } else if (!zfs_is_mounted(zhp, NULL)) { 3767 (void) fprintf(stderr, gettext("cannot " 3768 "unmount '%s': not currently " 3769 "mounted\n"), 3770 zfs_get_name(zhp)); 3771 ret = 1; 3772 } else if (zfs_unmountall(zhp, flags) != 0) { 3773 ret = 1; 3774 } 3775 break; 3776 } 3777 } else { 3778 assert(op == OP_SHARE); 3779 3780 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, 3781 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), 3782 NULL, NULL, 0, B_FALSE) == 0); 3783 3784 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) { 3785 (void) fprintf(stderr, gettext("cannot unshare " 3786 "'%s': 'shareiscsi' property not set\n"), 3787 zfs_get_name(zhp)); 3788 (void) fprintf(stderr, gettext("set " 3789 "'shareiscsi' property or use " 3790 "iscsitadm(1M) to share this volume\n")); 3791 ret = 1; 3792 } else if (!zfs_is_shared_iscsi(zhp)) { 3793 (void) fprintf(stderr, gettext("cannot " 3794 "unshare '%s': not currently shared\n"), 3795 zfs_get_name(zhp)); 3796 ret = 1; 3797 } else if (zfs_unshare_iscsi(zhp) != 0) { 3798 ret = 1; 3799 } 3800 } 3801 3802 zfs_close(zhp); 3803 } 3804 3805 return (ret); 3806 } 3807 3808 /* 3809 * zfs unmount -a 3810 * zfs unmount filesystem 3811 * 3812 * Unmount all filesystems, or a specific ZFS filesystem. 3813 */ 3814 static int 3815 zfs_do_unmount(int argc, char **argv) 3816 { 3817 return (unshare_unmount(OP_MOUNT, argc, argv)); 3818 } 3819 3820 /* 3821 * zfs unshare -a 3822 * zfs unshare filesystem 3823 * 3824 * Unshare all filesystems, or a specific ZFS filesystem. 3825 */ 3826 static int 3827 zfs_do_unshare(int argc, char **argv) 3828 { 3829 return (unshare_unmount(OP_SHARE, argc, argv)); 3830 } 3831 3832 /* 3833 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is 3834 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'. 3835 */ 3836 static int 3837 manual_mount(int argc, char **argv) 3838 { 3839 zfs_handle_t *zhp; 3840 char mountpoint[ZFS_MAXPROPLEN]; 3841 char mntopts[MNT_LINE_MAX] = { '\0' }; 3842 int ret; 3843 int c; 3844 int flags = 0; 3845 char *dataset, *path; 3846 3847 /* check options */ 3848 while ((c = getopt(argc, argv, ":mo:O")) != -1) { 3849 switch (c) { 3850 case 'o': 3851 (void) strlcpy(mntopts, optarg, sizeof (mntopts)); 3852 break; 3853 case 'O': 3854 flags |= MS_OVERLAY; 3855 break; 3856 case 'm': 3857 flags |= MS_NOMNTTAB; 3858 break; 3859 case ':': 3860 (void) fprintf(stderr, gettext("missing argument for " 3861 "'%c' option\n"), optopt); 3862 usage(B_FALSE); 3863 break; 3864 case '?': 3865 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3866 optopt); 3867 (void) fprintf(stderr, gettext("usage: mount [-o opts] " 3868 "<path>\n")); 3869 return (2); 3870 } 3871 } 3872 3873 argc -= optind; 3874 argv += optind; 3875 3876 /* check that we only have two arguments */ 3877 if (argc != 2) { 3878 if (argc == 0) 3879 (void) fprintf(stderr, gettext("missing dataset " 3880 "argument\n")); 3881 else if (argc == 1) 3882 (void) fprintf(stderr, 3883 gettext("missing mountpoint argument\n")); 3884 else 3885 (void) fprintf(stderr, gettext("too many arguments\n")); 3886 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n"); 3887 return (2); 3888 } 3889 3890 dataset = argv[0]; 3891 path = argv[1]; 3892 3893 /* try to open the dataset */ 3894 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL) 3895 return (1); 3896 3897 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 3898 sizeof (mountpoint), NULL, NULL, 0, B_FALSE); 3899 3900 /* check for legacy mountpoint and complain appropriately */ 3901 ret = 0; 3902 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) { 3903 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS, 3904 NULL, 0, mntopts, sizeof (mntopts)) != 0) { 3905 (void) fprintf(stderr, gettext("mount failed: %s\n"), 3906 strerror(errno)); 3907 ret = 1; 3908 } 3909 } else { 3910 (void) fprintf(stderr, gettext("filesystem '%s' cannot be " 3911 "mounted using 'mount -F zfs'\n"), dataset); 3912 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' " 3913 "instead.\n"), path); 3914 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' " 3915 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n")); 3916 (void) fprintf(stderr, gettext("See zfs(1M) for more " 3917 "information.\n")); 3918 ret = 1; 3919 } 3920 3921 return (ret); 3922 } 3923 3924 /* 3925 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow 3926 * unmounts of non-legacy filesystems, as this is the dominant administrative 3927 * interface. 3928 */ 3929 static int 3930 manual_unmount(int argc, char **argv) 3931 { 3932 int flags = 0; 3933 int c; 3934 3935 /* check options */ 3936 while ((c = getopt(argc, argv, "f")) != -1) { 3937 switch (c) { 3938 case 'f': 3939 flags = MS_FORCE; 3940 break; 3941 case '?': 3942 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3943 optopt); 3944 (void) fprintf(stderr, gettext("usage: unmount [-f] " 3945 "<path>\n")); 3946 return (2); 3947 } 3948 } 3949 3950 argc -= optind; 3951 argv += optind; 3952 3953 /* check arguments */ 3954 if (argc != 1) { 3955 if (argc == 0) 3956 (void) fprintf(stderr, gettext("missing path " 3957 "argument\n")); 3958 else 3959 (void) fprintf(stderr, gettext("too many arguments\n")); 3960 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n")); 3961 return (2); 3962 } 3963 3964 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE)); 3965 } 3966 3967 static int 3968 volcheck(zpool_handle_t *zhp, void *data) 3969 { 3970 boolean_t isinit = *((boolean_t *)data); 3971 3972 if (isinit) 3973 return (zpool_create_zvol_links(zhp)); 3974 else 3975 return (zpool_remove_zvol_links(zhp)); 3976 } 3977 3978 /* 3979 * Iterate over all pools in the system and either create or destroy /dev/zvol 3980 * links, depending on the value of 'isinit'. 3981 */ 3982 static int 3983 do_volcheck(boolean_t isinit) 3984 { 3985 return (zpool_iter(g_zfs, volcheck, &isinit) ? 1 : 0); 3986 } 3987 3988 static int 3989 find_command_idx(char *command, int *idx) 3990 { 3991 int i; 3992 3993 for (i = 0; i < NCOMMAND; i++) { 3994 if (command_table[i].name == NULL) 3995 continue; 3996 3997 if (strcmp(command, command_table[i].name) == 0) { 3998 *idx = i; 3999 return (0); 4000 } 4001 } 4002 return (1); 4003 } 4004 4005 int 4006 main(int argc, char **argv) 4007 { 4008 int ret; 4009 int i; 4010 char *progname; 4011 char *cmdname; 4012 4013 (void) setlocale(LC_ALL, ""); 4014 (void) textdomain(TEXT_DOMAIN); 4015 4016 opterr = 0; 4017 4018 if ((g_zfs = libzfs_init()) == NULL) { 4019 (void) fprintf(stderr, gettext("internal error: failed to " 4020 "initialize ZFS library\n")); 4021 return (1); 4022 } 4023 4024 zpool_set_history_str("zfs", argc, argv, history_str); 4025 verify(zpool_stage_history(g_zfs, history_str) == 0); 4026 4027 libzfs_print_on_error(g_zfs, B_TRUE); 4028 4029 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) { 4030 (void) fprintf(stderr, gettext("internal error: unable to " 4031 "open %s\n"), MNTTAB); 4032 return (1); 4033 } 4034 4035 /* 4036 * This command also doubles as the /etc/fs mount and unmount program. 4037 * Determine if we should take this behavior based on argv[0]. 4038 */ 4039 progname = basename(argv[0]); 4040 if (strcmp(progname, "mount") == 0) { 4041 ret = manual_mount(argc, argv); 4042 } else if (strcmp(progname, "umount") == 0) { 4043 ret = manual_unmount(argc, argv); 4044 } else { 4045 /* 4046 * Make sure the user has specified some command. 4047 */ 4048 if (argc < 2) { 4049 (void) fprintf(stderr, gettext("missing command\n")); 4050 usage(B_FALSE); 4051 } 4052 4053 cmdname = argv[1]; 4054 4055 /* 4056 * The 'umount' command is an alias for 'unmount' 4057 */ 4058 if (strcmp(cmdname, "umount") == 0) 4059 cmdname = "unmount"; 4060 4061 /* 4062 * The 'recv' command is an alias for 'receive' 4063 */ 4064 if (strcmp(cmdname, "recv") == 0) 4065 cmdname = "receive"; 4066 4067 /* 4068 * Special case '-?' 4069 */ 4070 if (strcmp(cmdname, "-?") == 0) 4071 usage(B_TRUE); 4072 4073 /* 4074 * 'volinit' and 'volfini' do not appear in the usage message, 4075 * so we have to special case them here. 4076 */ 4077 if (strcmp(cmdname, "volinit") == 0) 4078 return (do_volcheck(B_TRUE)); 4079 else if (strcmp(cmdname, "volfini") == 0) 4080 return (do_volcheck(B_FALSE)); 4081 4082 /* 4083 * Run the appropriate command. 4084 */ 4085 if (find_command_idx(cmdname, &i) == 0) { 4086 current_command = &command_table[i]; 4087 ret = command_table[i].func(argc - 1, argv + 1); 4088 } else if (strchr(cmdname, '=') != NULL) { 4089 verify(find_command_idx("set", &i) == 0); 4090 current_command = &command_table[i]; 4091 ret = command_table[i].func(argc, argv); 4092 } else { 4093 (void) fprintf(stderr, gettext("unrecognized " 4094 "command '%s'\n"), cmdname); 4095 usage(B_FALSE); 4096 } 4097 } 4098 4099 (void) fclose(mnttab_file); 4100 4101 libzfs_fini(g_zfs); 4102 4103 /* 4104 * The 'ZFS_ABORT' environment variable causes us to dump core on exit 4105 * for the purposes of running ::findleaks. 4106 */ 4107 if (getenv("ZFS_ABORT") != NULL) { 4108 (void) printf("dumping core by request\n"); 4109 abort(); 4110 } 4111 4112 return (ret); 4113 } 4114