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