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 zfs_prop_t prop = zfs_name_to_prop(propname); 1290 1291 /* 1292 * If we're doing it recursively, then ignore properties that 1293 * are not valid for this type of dataset. 1294 */ 1295 if (prop != ZPROP_INVAL && 1296 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp))) 1297 return (0); 1298 1299 return (zfs_prop_inherit(zhp, propname) != 0); 1300 } 1301 1302 static int 1303 inherit_cb(zfs_handle_t *zhp, void *data) 1304 { 1305 char *propname = data; 1306 1307 return (zfs_prop_inherit(zhp, propname) != 0); 1308 } 1309 1310 static int 1311 zfs_do_inherit(int argc, char **argv) 1312 { 1313 boolean_t recurse = B_FALSE; 1314 int c; 1315 zfs_prop_t prop; 1316 char *propname; 1317 int ret; 1318 1319 /* check options */ 1320 while ((c = getopt(argc, argv, "r")) != -1) { 1321 switch (c) { 1322 case 'r': 1323 recurse = B_TRUE; 1324 break; 1325 case '?': 1326 default: 1327 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1328 optopt); 1329 usage(B_FALSE); 1330 } 1331 } 1332 1333 argc -= optind; 1334 argv += optind; 1335 1336 /* check number of arguments */ 1337 if (argc < 1) { 1338 (void) fprintf(stderr, gettext("missing property argument\n")); 1339 usage(B_FALSE); 1340 } 1341 if (argc < 2) { 1342 (void) fprintf(stderr, gettext("missing dataset argument\n")); 1343 usage(B_FALSE); 1344 } 1345 1346 propname = argv[0]; 1347 argc--; 1348 argv++; 1349 1350 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) { 1351 if (zfs_prop_readonly(prop)) { 1352 (void) fprintf(stderr, gettext( 1353 "%s property is read-only\n"), 1354 propname); 1355 return (1); 1356 } 1357 if (!zfs_prop_inheritable(prop)) { 1358 (void) fprintf(stderr, gettext("'%s' property cannot " 1359 "be inherited\n"), propname); 1360 if (prop == ZFS_PROP_QUOTA || 1361 prop == ZFS_PROP_RESERVATION || 1362 prop == ZFS_PROP_REFQUOTA || 1363 prop == ZFS_PROP_REFRESERVATION) 1364 (void) fprintf(stderr, gettext("use 'zfs set " 1365 "%s=none' to clear\n"), propname); 1366 return (1); 1367 } 1368 } else if (!zfs_prop_user(propname)) { 1369 (void) fprintf(stderr, gettext("invalid property '%s'\n"), 1370 propname); 1371 usage(B_FALSE); 1372 } 1373 1374 if (recurse) { 1375 ret = zfs_for_each(argc, argv, recurse, ZFS_TYPE_DATASET, 1376 NULL, NULL, inherit_recurse_cb, propname, B_FALSE); 1377 } else { 1378 ret = zfs_for_each(argc, argv, recurse, ZFS_TYPE_DATASET, 1379 NULL, NULL, inherit_cb, propname, B_FALSE); 1380 } 1381 1382 return (ret); 1383 } 1384 1385 typedef struct upgrade_cbdata { 1386 uint64_t cb_numupgraded; 1387 uint64_t cb_numsamegraded; 1388 uint64_t cb_numfailed; 1389 uint64_t cb_version; 1390 boolean_t cb_newer; 1391 boolean_t cb_foundone; 1392 char cb_lastfs[ZFS_MAXNAMELEN]; 1393 } upgrade_cbdata_t; 1394 1395 static int 1396 same_pool(zfs_handle_t *zhp, const char *name) 1397 { 1398 int len1 = strcspn(name, "/@"); 1399 const char *zhname = zfs_get_name(zhp); 1400 int len2 = strcspn(zhname, "/@"); 1401 1402 if (len1 != len2) 1403 return (B_FALSE); 1404 return (strncmp(name, zhname, len1) == 0); 1405 } 1406 1407 static int 1408 upgrade_list_callback(zfs_handle_t *zhp, void *data) 1409 { 1410 upgrade_cbdata_t *cb = data; 1411 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1412 1413 /* list if it's old/new */ 1414 if ((!cb->cb_newer && version < ZPL_VERSION) || 1415 (cb->cb_newer && version > ZPL_VERSION)) { 1416 char *str; 1417 if (cb->cb_newer) { 1418 str = gettext("The following filesystems are " 1419 "formatted using a newer software version and\n" 1420 "cannot be accessed on the current system.\n\n"); 1421 } else { 1422 str = gettext("The following filesystems are " 1423 "out of date, and can be upgraded. After being\n" 1424 "upgraded, these filesystems (and any 'zfs send' " 1425 "streams generated from\n" 1426 "subsequent snapshots) will no longer be " 1427 "accessible by older software versions.\n\n"); 1428 } 1429 1430 if (!cb->cb_foundone) { 1431 (void) puts(str); 1432 (void) printf(gettext("VER FILESYSTEM\n")); 1433 (void) printf(gettext("--- ------------\n")); 1434 cb->cb_foundone = B_TRUE; 1435 } 1436 1437 (void) printf("%2u %s\n", version, zfs_get_name(zhp)); 1438 } 1439 1440 return (0); 1441 } 1442 1443 static int 1444 upgrade_set_callback(zfs_handle_t *zhp, void *data) 1445 { 1446 upgrade_cbdata_t *cb = data; 1447 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1448 1449 if (cb->cb_version >= ZPL_VERSION_FUID) { 1450 int spa_version; 1451 1452 if (zfs_spa_version(zhp, &spa_version) < 0) 1453 return (-1); 1454 1455 if (spa_version < SPA_VERSION_FUID) { 1456 /* can't upgrade */ 1457 (void) printf(gettext("%s: can not be upgraded; " 1458 "the pool version needs to first be upgraded\nto " 1459 "version %d\n\n"), 1460 zfs_get_name(zhp), SPA_VERSION_FUID); 1461 cb->cb_numfailed++; 1462 return (0); 1463 } 1464 } 1465 1466 /* upgrade */ 1467 if (version < cb->cb_version) { 1468 char verstr[16]; 1469 (void) snprintf(verstr, sizeof (verstr), 1470 "%llu", cb->cb_version); 1471 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) { 1472 /* 1473 * If they did "zfs upgrade -a", then we could 1474 * be doing ioctls to different pools. We need 1475 * to log this history once to each pool. 1476 */ 1477 verify(zpool_stage_history(g_zfs, history_str) == 0); 1478 } 1479 if (zfs_prop_set(zhp, "version", verstr) == 0) 1480 cb->cb_numupgraded++; 1481 else 1482 cb->cb_numfailed++; 1483 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp)); 1484 } else if (version > cb->cb_version) { 1485 /* can't downgrade */ 1486 (void) printf(gettext("%s: can not be downgraded; " 1487 "it is already at version %u\n"), 1488 zfs_get_name(zhp), version); 1489 cb->cb_numfailed++; 1490 } else { 1491 cb->cb_numsamegraded++; 1492 } 1493 return (0); 1494 } 1495 1496 /* 1497 * zfs upgrade 1498 * zfs upgrade -v 1499 * zfs upgrade [-r] [-V <version>] <-a | filesystem> 1500 */ 1501 static int 1502 zfs_do_upgrade(int argc, char **argv) 1503 { 1504 boolean_t recurse = B_FALSE; 1505 boolean_t all = B_FALSE; 1506 boolean_t showversions = B_FALSE; 1507 int ret; 1508 upgrade_cbdata_t cb = { 0 }; 1509 char c; 1510 1511 /* check options */ 1512 while ((c = getopt(argc, argv, "rvV:a")) != -1) { 1513 switch (c) { 1514 case 'r': 1515 recurse = B_TRUE; 1516 break; 1517 case 'v': 1518 showversions = B_TRUE; 1519 break; 1520 case 'V': 1521 if (zfs_prop_string_to_index(ZFS_PROP_VERSION, 1522 optarg, &cb.cb_version) != 0) { 1523 (void) fprintf(stderr, 1524 gettext("invalid version %s\n"), optarg); 1525 usage(B_FALSE); 1526 } 1527 break; 1528 case 'a': 1529 all = B_TRUE; 1530 break; 1531 case '?': 1532 default: 1533 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1534 optopt); 1535 usage(B_FALSE); 1536 } 1537 } 1538 1539 argc -= optind; 1540 argv += optind; 1541 1542 if ((!all && !argc) && (recurse | cb.cb_version)) 1543 usage(B_FALSE); 1544 if (showversions && (recurse || all || cb.cb_version || argc)) 1545 usage(B_FALSE); 1546 if ((all || argc) && (showversions)) 1547 usage(B_FALSE); 1548 if (all && argc) 1549 usage(B_FALSE); 1550 1551 if (showversions) { 1552 /* Show info on available versions. */ 1553 (void) printf(gettext("The following filesystem versions are " 1554 "supported:\n\n")); 1555 (void) printf(gettext("VER DESCRIPTION\n")); 1556 (void) printf("--- -----------------------------------------" 1557 "---------------\n"); 1558 (void) printf(gettext(" 1 Initial ZFS filesystem version\n")); 1559 (void) printf(gettext(" 2 Enhanced directory entries\n")); 1560 (void) printf(gettext(" 3 Case insensitive and File system " 1561 "unique identifer (FUID)\n")); 1562 (void) printf(gettext("\nFor more information on a particular " 1563 "version, including supported releases, see:\n\n")); 1564 (void) printf("http://www.opensolaris.org/os/community/zfs/" 1565 "version/zpl/N\n\n"); 1566 (void) printf(gettext("Where 'N' is the version number.\n")); 1567 ret = 0; 1568 } else if (argc || all) { 1569 /* Upgrade filesystems */ 1570 if (cb.cb_version == 0) 1571 cb.cb_version = ZPL_VERSION; 1572 ret = zfs_for_each(argc, argv, recurse, ZFS_TYPE_FILESYSTEM, 1573 NULL, NULL, upgrade_set_callback, &cb, B_TRUE); 1574 (void) printf(gettext("%llu filesystems upgraded\n"), 1575 cb.cb_numupgraded); 1576 if (cb.cb_numsamegraded) { 1577 (void) printf(gettext("%llu filesystems already at " 1578 "this version\n"), 1579 cb.cb_numsamegraded); 1580 } 1581 if (cb.cb_numfailed != 0) 1582 ret = 1; 1583 } else { 1584 /* List old-version filesytems */ 1585 boolean_t found; 1586 (void) printf(gettext("This system is currently running " 1587 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION); 1588 1589 ret = zfs_for_each(0, NULL, B_TRUE, ZFS_TYPE_FILESYSTEM, 1590 NULL, NULL, upgrade_list_callback, &cb, B_TRUE); 1591 1592 found = cb.cb_foundone; 1593 cb.cb_foundone = B_FALSE; 1594 cb.cb_newer = B_TRUE; 1595 1596 ret = zfs_for_each(0, NULL, B_TRUE, ZFS_TYPE_FILESYSTEM, 1597 NULL, NULL, upgrade_list_callback, &cb, B_TRUE); 1598 1599 if (!cb.cb_foundone && !found) { 1600 (void) printf(gettext("All filesystems are " 1601 "formatted with the current version.\n")); 1602 } 1603 } 1604 1605 return (ret); 1606 } 1607 1608 /* 1609 * list [-rH] [-o property[,property]...] [-t type[,type]...] 1610 * [-s property [-s property]...] [-S property [-S property]...] 1611 * <dataset> ... 1612 * 1613 * -r Recurse over all children 1614 * -H Scripted mode; elide headers and separate columns by tabs 1615 * -o Control which fields to display. 1616 * -t Control which object types to display. 1617 * -s Specify sort columns, descending order. 1618 * -S Specify sort columns, ascending order. 1619 * 1620 * When given no arguments, lists all filesystems in the system. 1621 * Otherwise, list the specified datasets, optionally recursing down them if 1622 * '-r' is specified. 1623 */ 1624 typedef struct list_cbdata { 1625 boolean_t cb_first; 1626 boolean_t cb_scripted; 1627 zprop_list_t *cb_proplist; 1628 } list_cbdata_t; 1629 1630 /* 1631 * Given a list of columns to display, output appropriate headers for each one. 1632 */ 1633 static void 1634 print_header(zprop_list_t *pl) 1635 { 1636 char headerbuf[ZFS_MAXPROPLEN]; 1637 const char *header; 1638 int i; 1639 boolean_t first = B_TRUE; 1640 boolean_t right_justify; 1641 1642 for (; pl != NULL; pl = pl->pl_next) { 1643 if (!first) { 1644 (void) printf(" "); 1645 } else { 1646 first = B_FALSE; 1647 } 1648 1649 right_justify = B_FALSE; 1650 if (pl->pl_prop != ZPROP_INVAL) { 1651 header = zfs_prop_column_name(pl->pl_prop); 1652 right_justify = zfs_prop_align_right(pl->pl_prop); 1653 } else { 1654 for (i = 0; pl->pl_user_prop[i] != '\0'; i++) 1655 headerbuf[i] = toupper(pl->pl_user_prop[i]); 1656 headerbuf[i] = '\0'; 1657 header = headerbuf; 1658 } 1659 1660 if (pl->pl_next == NULL && !right_justify) 1661 (void) printf("%s", header); 1662 else if (right_justify) 1663 (void) printf("%*s", pl->pl_width, header); 1664 else 1665 (void) printf("%-*s", pl->pl_width, header); 1666 } 1667 1668 (void) printf("\n"); 1669 } 1670 1671 /* 1672 * Given a dataset and a list of fields, print out all the properties according 1673 * to the described layout. 1674 */ 1675 static void 1676 print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted) 1677 { 1678 boolean_t first = B_TRUE; 1679 char property[ZFS_MAXPROPLEN]; 1680 nvlist_t *userprops = zfs_get_user_props(zhp); 1681 nvlist_t *propval; 1682 char *propstr; 1683 boolean_t right_justify; 1684 int width; 1685 1686 for (; pl != NULL; pl = pl->pl_next) { 1687 if (!first) { 1688 if (scripted) 1689 (void) printf("\t"); 1690 else 1691 (void) printf(" "); 1692 } else { 1693 first = B_FALSE; 1694 } 1695 1696 right_justify = B_FALSE; 1697 if (pl->pl_prop != ZPROP_INVAL) { 1698 if (zfs_prop_get(zhp, pl->pl_prop, property, 1699 sizeof (property), NULL, NULL, 0, B_FALSE) != 0) 1700 propstr = "-"; 1701 else 1702 propstr = property; 1703 1704 right_justify = zfs_prop_align_right(pl->pl_prop); 1705 } else { 1706 if (nvlist_lookup_nvlist(userprops, 1707 pl->pl_user_prop, &propval) != 0) 1708 propstr = "-"; 1709 else 1710 verify(nvlist_lookup_string(propval, 1711 ZPROP_VALUE, &propstr) == 0); 1712 } 1713 1714 width = pl->pl_width; 1715 1716 /* 1717 * If this is being called in scripted mode, or if this is the 1718 * last column and it is left-justified, don't include a width 1719 * format specifier. 1720 */ 1721 if (scripted || (pl->pl_next == NULL && !right_justify)) 1722 (void) printf("%s", propstr); 1723 else if (right_justify) 1724 (void) printf("%*s", width, propstr); 1725 else 1726 (void) printf("%-*s", width, propstr); 1727 } 1728 1729 (void) printf("\n"); 1730 } 1731 1732 /* 1733 * Generic callback function to list a dataset or snapshot. 1734 */ 1735 static int 1736 list_callback(zfs_handle_t *zhp, void *data) 1737 { 1738 list_cbdata_t *cbp = data; 1739 1740 if (cbp->cb_first) { 1741 if (!cbp->cb_scripted) 1742 print_header(cbp->cb_proplist); 1743 cbp->cb_first = B_FALSE; 1744 } 1745 1746 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted); 1747 1748 return (0); 1749 } 1750 1751 static int 1752 zfs_do_list(int argc, char **argv) 1753 { 1754 int c; 1755 boolean_t recurse = B_FALSE; 1756 boolean_t scripted = B_FALSE; 1757 static char default_fields[] = 1758 "name,used,available,referenced,mountpoint"; 1759 int types = ZFS_TYPE_DATASET; 1760 char *fields = NULL; 1761 char *basic_fields = default_fields; 1762 list_cbdata_t cb = { 0 }; 1763 char *value; 1764 int ret; 1765 char *type_subopts[] = { "filesystem", "volume", "snapshot", NULL }; 1766 zfs_sort_column_t *sortcol = NULL; 1767 1768 /* check options */ 1769 while ((c = getopt(argc, argv, ":o:rt:Hs:S:")) != -1) { 1770 switch (c) { 1771 case 'o': 1772 fields = optarg; 1773 break; 1774 case 'r': 1775 recurse = B_TRUE; 1776 break; 1777 case 'H': 1778 scripted = B_TRUE; 1779 break; 1780 case 's': 1781 if (zfs_add_sort_column(&sortcol, optarg, 1782 B_FALSE) != 0) { 1783 (void) fprintf(stderr, 1784 gettext("invalid property '%s'\n"), optarg); 1785 usage(B_FALSE); 1786 } 1787 break; 1788 case 'S': 1789 if (zfs_add_sort_column(&sortcol, optarg, 1790 B_TRUE) != 0) { 1791 (void) fprintf(stderr, 1792 gettext("invalid property '%s'\n"), optarg); 1793 usage(B_FALSE); 1794 } 1795 break; 1796 case 't': 1797 types = 0; 1798 while (*optarg != '\0') { 1799 switch (getsubopt(&optarg, type_subopts, 1800 &value)) { 1801 case 0: 1802 types |= ZFS_TYPE_FILESYSTEM; 1803 break; 1804 case 1: 1805 types |= ZFS_TYPE_VOLUME; 1806 break; 1807 case 2: 1808 types |= ZFS_TYPE_SNAPSHOT; 1809 break; 1810 default: 1811 (void) fprintf(stderr, 1812 gettext("invalid type '%s'\n"), 1813 value); 1814 usage(B_FALSE); 1815 } 1816 } 1817 break; 1818 case ':': 1819 (void) fprintf(stderr, gettext("missing argument for " 1820 "'%c' option\n"), optopt); 1821 usage(B_FALSE); 1822 break; 1823 case '?': 1824 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1825 optopt); 1826 usage(B_FALSE); 1827 } 1828 } 1829 1830 argc -= optind; 1831 argv += optind; 1832 1833 if (fields == NULL) 1834 fields = basic_fields; 1835 1836 /* 1837 * If the user specifies '-o all', the zprop_get_list() doesn't 1838 * normally include the name of the dataset. For 'zfs list', we always 1839 * want this property to be first. 1840 */ 1841 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1842 != 0) 1843 usage(B_FALSE); 1844 1845 cb.cb_scripted = scripted; 1846 cb.cb_first = B_TRUE; 1847 1848 ret = zfs_for_each(argc, argv, recurse, types, sortcol, &cb.cb_proplist, 1849 list_callback, &cb, B_TRUE); 1850 1851 zprop_free_list(cb.cb_proplist); 1852 zfs_free_sort_columns(sortcol); 1853 1854 if (ret == 0 && cb.cb_first && !cb.cb_scripted) 1855 (void) printf(gettext("no datasets available\n")); 1856 1857 return (ret); 1858 } 1859 1860 /* 1861 * zfs rename <fs | snap | vol> <fs | snap | vol> 1862 * zfs rename -p <fs | vol> <fs | vol> 1863 * zfs rename -r <snap> <snap> 1864 * 1865 * Renames the given dataset to another of the same type. 1866 * 1867 * The '-p' flag creates all the non-existing ancestors of the target first. 1868 */ 1869 /* ARGSUSED */ 1870 static int 1871 zfs_do_rename(int argc, char **argv) 1872 { 1873 zfs_handle_t *zhp; 1874 int c; 1875 int ret; 1876 boolean_t recurse = B_FALSE; 1877 boolean_t parents = B_FALSE; 1878 1879 /* check options */ 1880 while ((c = getopt(argc, argv, "pr")) != -1) { 1881 switch (c) { 1882 case 'p': 1883 parents = B_TRUE; 1884 break; 1885 case 'r': 1886 recurse = B_TRUE; 1887 break; 1888 case '?': 1889 default: 1890 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1891 optopt); 1892 usage(B_FALSE); 1893 } 1894 } 1895 1896 argc -= optind; 1897 argv += optind; 1898 1899 /* check number of arguments */ 1900 if (argc < 1) { 1901 (void) fprintf(stderr, gettext("missing source dataset " 1902 "argument\n")); 1903 usage(B_FALSE); 1904 } 1905 if (argc < 2) { 1906 (void) fprintf(stderr, gettext("missing target dataset " 1907 "argument\n")); 1908 usage(B_FALSE); 1909 } 1910 if (argc > 2) { 1911 (void) fprintf(stderr, gettext("too many arguments\n")); 1912 usage(B_FALSE); 1913 } 1914 1915 if (recurse && parents) { 1916 (void) fprintf(stderr, gettext("-p and -r options are mutually " 1917 "exclusive\n")); 1918 usage(B_FALSE); 1919 } 1920 1921 if (recurse && strchr(argv[0], '@') == 0) { 1922 (void) fprintf(stderr, gettext("source dataset for recursive " 1923 "rename must be a snapshot\n")); 1924 usage(B_FALSE); 1925 } 1926 1927 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM | 1928 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL) 1929 return (1); 1930 1931 /* If we were asked and the name looks good, try to create ancestors. */ 1932 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) && 1933 zfs_create_ancestors(g_zfs, argv[1]) != 0) { 1934 zfs_close(zhp); 1935 return (1); 1936 } 1937 1938 ret = (zfs_rename(zhp, argv[1], recurse) != 0); 1939 1940 zfs_close(zhp); 1941 return (ret); 1942 } 1943 1944 /* 1945 * zfs promote <fs> 1946 * 1947 * Promotes the given clone fs to be the parent 1948 */ 1949 /* ARGSUSED */ 1950 static int 1951 zfs_do_promote(int argc, char **argv) 1952 { 1953 zfs_handle_t *zhp; 1954 int ret; 1955 1956 /* check options */ 1957 if (argc > 1 && argv[1][0] == '-') { 1958 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1959 argv[1][1]); 1960 usage(B_FALSE); 1961 } 1962 1963 /* check number of arguments */ 1964 if (argc < 2) { 1965 (void) fprintf(stderr, gettext("missing clone filesystem" 1966 " argument\n")); 1967 usage(B_FALSE); 1968 } 1969 if (argc > 2) { 1970 (void) fprintf(stderr, gettext("too many arguments\n")); 1971 usage(B_FALSE); 1972 } 1973 1974 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 1975 if (zhp == NULL) 1976 return (1); 1977 1978 ret = (zfs_promote(zhp) != 0); 1979 1980 1981 zfs_close(zhp); 1982 return (ret); 1983 } 1984 1985 /* 1986 * zfs rollback [-rRf] <snapshot> 1987 * 1988 * -r Delete any intervening snapshots before doing rollback 1989 * -R Delete any snapshots and their clones 1990 * -f ignored for backwards compatability 1991 * 1992 * Given a filesystem, rollback to a specific snapshot, discarding any changes 1993 * since then and making it the active dataset. If more recent snapshots exist, 1994 * the command will complain unless the '-r' flag is given. 1995 */ 1996 typedef struct rollback_cbdata { 1997 uint64_t cb_create; 1998 boolean_t cb_first; 1999 int cb_doclones; 2000 char *cb_target; 2001 int cb_error; 2002 boolean_t cb_recurse; 2003 boolean_t cb_dependent; 2004 } rollback_cbdata_t; 2005 2006 /* 2007 * Report any snapshots more recent than the one specified. Used when '-r' is 2008 * not specified. We reuse this same callback for the snapshot dependents - if 2009 * 'cb_dependent' is set, then this is a dependent and we should report it 2010 * without checking the transaction group. 2011 */ 2012 static int 2013 rollback_check(zfs_handle_t *zhp, void *data) 2014 { 2015 rollback_cbdata_t *cbp = data; 2016 2017 if (cbp->cb_doclones) { 2018 zfs_close(zhp); 2019 return (0); 2020 } 2021 2022 if (!cbp->cb_dependent) { 2023 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 && 2024 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && 2025 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > 2026 cbp->cb_create) { 2027 2028 if (cbp->cb_first && !cbp->cb_recurse) { 2029 (void) fprintf(stderr, gettext("cannot " 2030 "rollback to '%s': more recent snapshots " 2031 "exist\n"), 2032 cbp->cb_target); 2033 (void) fprintf(stderr, gettext("use '-r' to " 2034 "force deletion of the following " 2035 "snapshots:\n")); 2036 cbp->cb_first = 0; 2037 cbp->cb_error = 1; 2038 } 2039 2040 if (cbp->cb_recurse) { 2041 cbp->cb_dependent = B_TRUE; 2042 if (zfs_iter_dependents(zhp, B_TRUE, 2043 rollback_check, cbp) != 0) { 2044 zfs_close(zhp); 2045 return (-1); 2046 } 2047 cbp->cb_dependent = B_FALSE; 2048 } else { 2049 (void) fprintf(stderr, "%s\n", 2050 zfs_get_name(zhp)); 2051 } 2052 } 2053 } else { 2054 if (cbp->cb_first && cbp->cb_recurse) { 2055 (void) fprintf(stderr, gettext("cannot rollback to " 2056 "'%s': clones of previous snapshots exist\n"), 2057 cbp->cb_target); 2058 (void) fprintf(stderr, gettext("use '-R' to " 2059 "force deletion of the following clones and " 2060 "dependents:\n")); 2061 cbp->cb_first = 0; 2062 cbp->cb_error = 1; 2063 } 2064 2065 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 2066 } 2067 2068 zfs_close(zhp); 2069 return (0); 2070 } 2071 2072 static int 2073 zfs_do_rollback(int argc, char **argv) 2074 { 2075 int ret; 2076 int c; 2077 boolean_t force = B_FALSE; 2078 rollback_cbdata_t cb = { 0 }; 2079 zfs_handle_t *zhp, *snap; 2080 char parentname[ZFS_MAXNAMELEN]; 2081 char *delim; 2082 2083 /* check options */ 2084 while ((c = getopt(argc, argv, "rRf")) != -1) { 2085 switch (c) { 2086 case 'r': 2087 cb.cb_recurse = 1; 2088 break; 2089 case 'R': 2090 cb.cb_recurse = 1; 2091 cb.cb_doclones = 1; 2092 break; 2093 case 'f': 2094 force = B_TRUE; 2095 break; 2096 case '?': 2097 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2098 optopt); 2099 usage(B_FALSE); 2100 } 2101 } 2102 2103 argc -= optind; 2104 argv += optind; 2105 2106 /* check number of arguments */ 2107 if (argc < 1) { 2108 (void) fprintf(stderr, gettext("missing dataset argument\n")); 2109 usage(B_FALSE); 2110 } 2111 if (argc > 1) { 2112 (void) fprintf(stderr, gettext("too many arguments\n")); 2113 usage(B_FALSE); 2114 } 2115 2116 /* open the snapshot */ 2117 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 2118 return (1); 2119 2120 /* open the parent dataset */ 2121 (void) strlcpy(parentname, argv[0], sizeof (parentname)); 2122 verify((delim = strrchr(parentname, '@')) != NULL); 2123 *delim = '\0'; 2124 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) { 2125 zfs_close(snap); 2126 return (1); 2127 } 2128 2129 /* 2130 * Check for more recent snapshots and/or clones based on the presence 2131 * of '-r' and '-R'. 2132 */ 2133 cb.cb_target = argv[0]; 2134 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 2135 cb.cb_first = B_TRUE; 2136 cb.cb_error = 0; 2137 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0) 2138 goto out; 2139 2140 if ((ret = cb.cb_error) != 0) 2141 goto out; 2142 2143 /* 2144 * Rollback parent to the given snapshot. 2145 */ 2146 ret = zfs_rollback(zhp, snap, force); 2147 2148 out: 2149 zfs_close(snap); 2150 zfs_close(zhp); 2151 2152 if (ret == 0) 2153 return (0); 2154 else 2155 return (1); 2156 } 2157 2158 /* 2159 * zfs set property=value { fs | snap | vol } ... 2160 * 2161 * Sets the given property for all datasets specified on the command line. 2162 */ 2163 typedef struct set_cbdata { 2164 char *cb_propname; 2165 char *cb_value; 2166 } set_cbdata_t; 2167 2168 static int 2169 set_callback(zfs_handle_t *zhp, void *data) 2170 { 2171 set_cbdata_t *cbp = data; 2172 2173 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) { 2174 switch (libzfs_errno(g_zfs)) { 2175 case EZFS_MOUNTFAILED: 2176 (void) fprintf(stderr, gettext("property may be set " 2177 "but unable to remount filesystem\n")); 2178 break; 2179 case EZFS_SHARENFSFAILED: 2180 (void) fprintf(stderr, gettext("property may be set " 2181 "but unable to reshare filesystem\n")); 2182 break; 2183 } 2184 return (1); 2185 } 2186 return (0); 2187 } 2188 2189 static int 2190 zfs_do_set(int argc, char **argv) 2191 { 2192 set_cbdata_t cb; 2193 int ret; 2194 2195 /* check for options */ 2196 if (argc > 1 && argv[1][0] == '-') { 2197 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2198 argv[1][1]); 2199 usage(B_FALSE); 2200 } 2201 2202 /* check number of arguments */ 2203 if (argc < 2) { 2204 (void) fprintf(stderr, gettext("missing property=value " 2205 "argument\n")); 2206 usage(B_FALSE); 2207 } 2208 if (argc < 3) { 2209 (void) fprintf(stderr, gettext("missing dataset name\n")); 2210 usage(B_FALSE); 2211 } 2212 2213 /* validate property=value argument */ 2214 cb.cb_propname = argv[1]; 2215 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) || 2216 (cb.cb_value[1] == '\0')) { 2217 (void) fprintf(stderr, gettext("missing value in " 2218 "property=value argument\n")); 2219 usage(B_FALSE); 2220 } 2221 2222 *cb.cb_value = '\0'; 2223 cb.cb_value++; 2224 2225 if (*cb.cb_propname == '\0') { 2226 (void) fprintf(stderr, 2227 gettext("missing property in property=value argument\n")); 2228 usage(B_FALSE); 2229 } 2230 2231 ret = zfs_for_each(argc - 2, argv + 2, B_FALSE, 2232 ZFS_TYPE_DATASET, NULL, NULL, set_callback, &cb, B_FALSE); 2233 2234 return (ret); 2235 } 2236 2237 /* 2238 * zfs snapshot [-r] [-o prop=value] ... <fs@snap> 2239 * 2240 * Creates a snapshot with the given name. While functionally equivalent to 2241 * 'zfs create', it is a separate command to differentiate intent. 2242 */ 2243 static int 2244 zfs_do_snapshot(int argc, char **argv) 2245 { 2246 boolean_t recursive = B_FALSE; 2247 int ret; 2248 char c; 2249 nvlist_t *props; 2250 2251 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 2252 (void) fprintf(stderr, gettext("internal error: " 2253 "out of memory\n")); 2254 return (1); 2255 } 2256 2257 /* check options */ 2258 while ((c = getopt(argc, argv, "ro:")) != -1) { 2259 switch (c) { 2260 case 'o': 2261 if (parseprop(props)) 2262 return (1); 2263 break; 2264 case 'r': 2265 recursive = B_TRUE; 2266 break; 2267 case '?': 2268 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2269 optopt); 2270 goto usage; 2271 } 2272 } 2273 2274 argc -= optind; 2275 argv += optind; 2276 2277 /* check number of arguments */ 2278 if (argc < 1) { 2279 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2280 goto usage; 2281 } 2282 if (argc > 1) { 2283 (void) fprintf(stderr, gettext("too many arguments\n")); 2284 goto usage; 2285 } 2286 2287 ret = zfs_snapshot(g_zfs, argv[0], recursive, props); 2288 nvlist_free(props); 2289 if (ret && recursive) 2290 (void) fprintf(stderr, gettext("no snapshots were created\n")); 2291 return (ret != 0); 2292 2293 usage: 2294 nvlist_free(props); 2295 usage(B_FALSE); 2296 return (-1); 2297 } 2298 2299 /* 2300 * zfs send [-v] -R [-i|-I <@snap>] <fs@snap> 2301 * zfs send [-v] [-i|-I <@snap>] <fs@snap> 2302 * 2303 * Send a backup stream to stdout. 2304 */ 2305 static int 2306 zfs_do_send(int argc, char **argv) 2307 { 2308 char *fromname = NULL; 2309 char *toname = NULL; 2310 char *cp; 2311 zfs_handle_t *zhp; 2312 boolean_t doall = B_FALSE; 2313 boolean_t replicate = B_FALSE; 2314 boolean_t fromorigin = B_FALSE; 2315 boolean_t verbose = B_FALSE; 2316 int c, err; 2317 2318 /* check options */ 2319 while ((c = getopt(argc, argv, ":i:I:Rv")) != -1) { 2320 switch (c) { 2321 case 'i': 2322 if (fromname) 2323 usage(B_FALSE); 2324 fromname = optarg; 2325 break; 2326 case 'I': 2327 if (fromname) 2328 usage(B_FALSE); 2329 fromname = optarg; 2330 doall = B_TRUE; 2331 break; 2332 case 'R': 2333 replicate = B_TRUE; 2334 break; 2335 case 'v': 2336 verbose = B_TRUE; 2337 break; 2338 case ':': 2339 (void) fprintf(stderr, gettext("missing argument for " 2340 "'%c' option\n"), optopt); 2341 usage(B_FALSE); 2342 break; 2343 case '?': 2344 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2345 optopt); 2346 usage(B_FALSE); 2347 } 2348 } 2349 2350 argc -= optind; 2351 argv += optind; 2352 2353 /* check number of arguments */ 2354 if (argc < 1) { 2355 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2356 usage(B_FALSE); 2357 } 2358 if (argc > 1) { 2359 (void) fprintf(stderr, gettext("too many arguments\n")); 2360 usage(B_FALSE); 2361 } 2362 2363 if (isatty(STDOUT_FILENO)) { 2364 (void) fprintf(stderr, 2365 gettext("Error: Stream can not be written to a terminal.\n" 2366 "You must redirect standard output.\n")); 2367 return (1); 2368 } 2369 2370 cp = strchr(argv[0], '@'); 2371 if (cp == NULL) { 2372 (void) fprintf(stderr, 2373 gettext("argument must be a snapshot\n")); 2374 usage(B_FALSE); 2375 } 2376 *cp = '\0'; 2377 toname = cp + 1; 2378 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2379 if (zhp == NULL) 2380 return (1); 2381 2382 /* 2383 * If they specified the full path to the snapshot, chop off 2384 * everything except the short name of the snapshot, but special 2385 * case if they specify the origin. 2386 */ 2387 if (fromname && (cp = strchr(fromname, '@')) != NULL) { 2388 char origin[ZFS_MAXNAMELEN]; 2389 zprop_source_t src; 2390 2391 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN, 2392 origin, sizeof (origin), &src, NULL, 0, B_FALSE); 2393 2394 if (strcmp(origin, fromname) == 0) { 2395 fromname = NULL; 2396 fromorigin = B_TRUE; 2397 } else { 2398 *cp = '\0'; 2399 if (cp != fromname && strcmp(argv[0], fromname)) { 2400 (void) fprintf(stderr, 2401 gettext("incremental source must be " 2402 "in same filesystem\n")); 2403 usage(B_FALSE); 2404 } 2405 fromname = cp + 1; 2406 if (strchr(fromname, '@') || strchr(fromname, '/')) { 2407 (void) fprintf(stderr, 2408 gettext("invalid incremental source\n")); 2409 usage(B_FALSE); 2410 } 2411 } 2412 } 2413 2414 if (replicate && fromname == NULL) 2415 doall = B_TRUE; 2416 2417 err = zfs_send(zhp, fromname, toname, replicate, doall, fromorigin, 2418 verbose, STDOUT_FILENO); 2419 zfs_close(zhp); 2420 2421 return (err != 0); 2422 } 2423 2424 /* 2425 * zfs receive [-dnvF] <fs@snap> 2426 * 2427 * Restore a backup stream from stdin. 2428 */ 2429 static int 2430 zfs_do_receive(int argc, char **argv) 2431 { 2432 int c, err; 2433 recvflags_t flags; 2434 2435 bzero(&flags, sizeof (recvflags_t)); 2436 /* check options */ 2437 while ((c = getopt(argc, argv, ":dnvF")) != -1) { 2438 switch (c) { 2439 case 'd': 2440 flags.isprefix = B_TRUE; 2441 break; 2442 case 'n': 2443 flags.dryrun = B_TRUE; 2444 break; 2445 case 'v': 2446 flags.verbose = B_TRUE; 2447 break; 2448 case 'F': 2449 flags.force = B_TRUE; 2450 break; 2451 case ':': 2452 (void) fprintf(stderr, gettext("missing argument for " 2453 "'%c' option\n"), optopt); 2454 usage(B_FALSE); 2455 break; 2456 case '?': 2457 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2458 optopt); 2459 usage(B_FALSE); 2460 } 2461 } 2462 2463 argc -= optind; 2464 argv += optind; 2465 2466 /* check number of arguments */ 2467 if (argc < 1) { 2468 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2469 usage(B_FALSE); 2470 } 2471 if (argc > 1) { 2472 (void) fprintf(stderr, gettext("too many arguments\n")); 2473 usage(B_FALSE); 2474 } 2475 2476 if (isatty(STDIN_FILENO)) { 2477 (void) fprintf(stderr, 2478 gettext("Error: Backup stream can not be read " 2479 "from a terminal.\n" 2480 "You must redirect standard input.\n")); 2481 return (1); 2482 } 2483 2484 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL); 2485 2486 return (err != 0); 2487 } 2488 2489 typedef struct allow_cb { 2490 int a_permcnt; 2491 size_t a_treeoffset; 2492 } allow_cb_t; 2493 2494 static void 2495 zfs_print_perms(avl_tree_t *tree) 2496 { 2497 zfs_perm_node_t *permnode; 2498 2499 permnode = avl_first(tree); 2500 while (permnode != NULL) { 2501 (void) printf("%s", permnode->z_pname); 2502 permnode = AVL_NEXT(tree, permnode); 2503 if (permnode) 2504 (void) printf(","); 2505 else 2506 (void) printf("\n"); 2507 } 2508 } 2509 2510 /* 2511 * Iterate over user/groups/everyone/... and the call perm_iter 2512 * function to print actual permission when tree has >0 nodes. 2513 */ 2514 static void 2515 zfs_iter_perms(avl_tree_t *tree, const char *banner, allow_cb_t *cb) 2516 { 2517 zfs_allow_node_t *item; 2518 avl_tree_t *ptree; 2519 2520 item = avl_first(tree); 2521 while (item) { 2522 ptree = (void *)((char *)item + cb->a_treeoffset); 2523 if (avl_numnodes(ptree)) { 2524 if (cb->a_permcnt++ == 0) 2525 (void) printf("%s\n", banner); 2526 (void) printf("\t%s", item->z_key); 2527 /* 2528 * Avoid an extra space being printed 2529 * for "everyone" which is keyed with a null 2530 * string 2531 */ 2532 if (item->z_key[0] != '\0') 2533 (void) printf(" "); 2534 zfs_print_perms(ptree); 2535 } 2536 item = AVL_NEXT(tree, item); 2537 } 2538 } 2539 2540 #define LINES "-------------------------------------------------------------\n" 2541 static int 2542 zfs_print_allows(char *ds) 2543 { 2544 zfs_allow_t *curperms, *perms; 2545 zfs_handle_t *zhp; 2546 allow_cb_t allowcb = { 0 }; 2547 char banner[MAXPATHLEN]; 2548 2549 if (ds[0] == '-') 2550 usage(B_FALSE); 2551 2552 if (strrchr(ds, '@')) { 2553 (void) fprintf(stderr, gettext("Snapshots don't have 'allow'" 2554 " permissions\n")); 2555 return (1); 2556 } 2557 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL) 2558 return (1); 2559 2560 if (zfs_perm_get(zhp, &perms)) { 2561 (void) fprintf(stderr, 2562 gettext("Failed to retrieve 'allows' on %s\n"), ds); 2563 zfs_close(zhp); 2564 return (1); 2565 } 2566 2567 zfs_close(zhp); 2568 2569 if (perms != NULL) 2570 (void) printf("%s", LINES); 2571 for (curperms = perms; curperms; curperms = curperms->z_next) { 2572 2573 (void) snprintf(banner, sizeof (banner), 2574 "Permission sets on (%s)", curperms->z_setpoint); 2575 allowcb.a_treeoffset = 2576 offsetof(zfs_allow_node_t, z_localdescend); 2577 allowcb.a_permcnt = 0; 2578 zfs_iter_perms(&curperms->z_sets, banner, &allowcb); 2579 2580 (void) snprintf(banner, sizeof (banner), 2581 "Create time permissions on (%s)", curperms->z_setpoint); 2582 allowcb.a_treeoffset = 2583 offsetof(zfs_allow_node_t, z_localdescend); 2584 allowcb.a_permcnt = 0; 2585 zfs_iter_perms(&curperms->z_crperms, banner, &allowcb); 2586 2587 2588 (void) snprintf(banner, sizeof (banner), 2589 "Local permissions on (%s)", curperms->z_setpoint); 2590 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_local); 2591 allowcb.a_permcnt = 0; 2592 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2593 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2594 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2595 2596 (void) snprintf(banner, sizeof (banner), 2597 "Descendent permissions on (%s)", curperms->z_setpoint); 2598 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_descend); 2599 allowcb.a_permcnt = 0; 2600 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2601 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2602 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2603 2604 (void) snprintf(banner, sizeof (banner), 2605 "Local+Descendent permissions on (%s)", 2606 curperms->z_setpoint); 2607 allowcb.a_treeoffset = 2608 offsetof(zfs_allow_node_t, z_localdescend); 2609 allowcb.a_permcnt = 0; 2610 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2611 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2612 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2613 2614 (void) printf("%s", LINES); 2615 } 2616 zfs_free_allows(perms); 2617 return (0); 2618 } 2619 2620 #define ALLOWOPTIONS "ldcsu:g:e" 2621 #define UNALLOWOPTIONS "ldcsu:g:er" 2622 2623 /* 2624 * Validate options, and build necessary datastructure to display/remove/add 2625 * permissions. 2626 * Returns 0 - If permissions should be added/removed 2627 * Returns 1 - If permissions should be displayed. 2628 * Returns -1 - on failure 2629 */ 2630 int 2631 parse_allow_args(int *argc, char **argv[], boolean_t unallow, 2632 char **ds, int *recurse, nvlist_t **zperms) 2633 { 2634 int c; 2635 char *options = unallow ? UNALLOWOPTIONS : ALLOWOPTIONS; 2636 zfs_deleg_inherit_t deleg_type = ZFS_DELEG_NONE; 2637 zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN; 2638 char *who = NULL; 2639 char *perms = NULL; 2640 zfs_handle_t *zhp; 2641 2642 while ((c = getopt(*argc, *argv, options)) != -1) { 2643 switch (c) { 2644 case 'l': 2645 if (who_type == ZFS_DELEG_CREATE || 2646 who_type == ZFS_DELEG_NAMED_SET) 2647 usage(B_FALSE); 2648 2649 deleg_type |= ZFS_DELEG_PERM_LOCAL; 2650 break; 2651 case 'd': 2652 if (who_type == ZFS_DELEG_CREATE || 2653 who_type == ZFS_DELEG_NAMED_SET) 2654 usage(B_FALSE); 2655 2656 deleg_type |= ZFS_DELEG_PERM_DESCENDENT; 2657 break; 2658 case 'r': 2659 *recurse = B_TRUE; 2660 break; 2661 case 'c': 2662 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2663 usage(B_FALSE); 2664 if (deleg_type) 2665 usage(B_FALSE); 2666 who_type = ZFS_DELEG_CREATE; 2667 break; 2668 case 's': 2669 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2670 usage(B_FALSE); 2671 if (deleg_type) 2672 usage(B_FALSE); 2673 who_type = ZFS_DELEG_NAMED_SET; 2674 break; 2675 case 'u': 2676 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2677 usage(B_FALSE); 2678 who_type = ZFS_DELEG_USER; 2679 who = optarg; 2680 break; 2681 case 'g': 2682 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2683 usage(B_FALSE); 2684 who_type = ZFS_DELEG_GROUP; 2685 who = optarg; 2686 break; 2687 case 'e': 2688 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2689 usage(B_FALSE); 2690 who_type = ZFS_DELEG_EVERYONE; 2691 break; 2692 default: 2693 usage(B_FALSE); 2694 break; 2695 } 2696 } 2697 2698 if (deleg_type == 0) 2699 deleg_type = ZFS_DELEG_PERM_LOCALDESCENDENT; 2700 2701 *argc -= optind; 2702 *argv += optind; 2703 2704 if (unallow == B_FALSE && *argc == 1) { 2705 /* 2706 * Only print permissions if no options were processed 2707 */ 2708 if (optind == 1) 2709 return (1); 2710 else 2711 usage(B_FALSE); 2712 } 2713 2714 /* 2715 * initialize variables for zfs_build_perms based on number 2716 * of arguments. 2717 * 3 arguments ==> zfs [un]allow joe perm,perm,perm <dataset> or 2718 * zfs [un]allow -s @set1 perm,perm <dataset> 2719 * 2 arguments ==> zfs [un]allow -c perm,perm <dataset> or 2720 * zfs [un]allow -u|-g <name> perm <dataset> or 2721 * zfs [un]allow -e perm,perm <dataset> 2722 * zfs unallow joe <dataset> 2723 * zfs unallow -s @set1 <dataset> 2724 * 1 argument ==> zfs [un]allow -e <dataset> or 2725 * zfs [un]allow -c <dataset> 2726 */ 2727 2728 switch (*argc) { 2729 case 3: 2730 perms = (*argv)[1]; 2731 who = (*argv)[0]; 2732 *ds = (*argv)[2]; 2733 2734 /* 2735 * advance argc/argv for do_allow cases. 2736 * for do_allow case make sure who have a know who type 2737 * and its not a permission set. 2738 */ 2739 if (unallow == B_TRUE) { 2740 *argc -= 2; 2741 *argv += 2; 2742 } else if (who_type != ZFS_DELEG_WHO_UNKNOWN && 2743 who_type != ZFS_DELEG_NAMED_SET) 2744 usage(B_FALSE); 2745 break; 2746 2747 case 2: 2748 if (unallow == B_TRUE && (who_type == ZFS_DELEG_EVERYONE || 2749 who_type == ZFS_DELEG_CREATE || who != NULL)) { 2750 perms = (*argv)[0]; 2751 *ds = (*argv)[1]; 2752 } else { 2753 if (unallow == B_FALSE && 2754 (who_type == ZFS_DELEG_WHO_UNKNOWN || 2755 who_type == ZFS_DELEG_NAMED_SET)) 2756 usage(B_FALSE); 2757 else if (who_type == ZFS_DELEG_WHO_UNKNOWN || 2758 who_type == ZFS_DELEG_NAMED_SET) 2759 who = (*argv)[0]; 2760 else if (who_type != ZFS_DELEG_NAMED_SET) 2761 perms = (*argv)[0]; 2762 *ds = (*argv)[1]; 2763 } 2764 if (unallow == B_TRUE) { 2765 (*argc)--; 2766 (*argv)++; 2767 } 2768 break; 2769 2770 case 1: 2771 if (unallow == B_FALSE) 2772 usage(B_FALSE); 2773 if (who == NULL && who_type != ZFS_DELEG_CREATE && 2774 who_type != ZFS_DELEG_EVERYONE) 2775 usage(B_FALSE); 2776 *ds = (*argv)[0]; 2777 break; 2778 2779 default: 2780 usage(B_FALSE); 2781 } 2782 2783 if (strrchr(*ds, '@')) { 2784 (void) fprintf(stderr, 2785 gettext("Can't set or remove 'allow' permissions " 2786 "on snapshots.\n")); 2787 return (-1); 2788 } 2789 2790 if ((zhp = zfs_open(g_zfs, *ds, ZFS_TYPE_DATASET)) == NULL) 2791 return (-1); 2792 2793 if ((zfs_build_perms(zhp, who, perms, 2794 who_type, deleg_type, zperms)) != 0) { 2795 zfs_close(zhp); 2796 return (-1); 2797 } 2798 zfs_close(zhp); 2799 return (0); 2800 } 2801 2802 static int 2803 zfs_do_allow(int argc, char **argv) 2804 { 2805 char *ds; 2806 nvlist_t *zperms = NULL; 2807 zfs_handle_t *zhp; 2808 int unused; 2809 int ret; 2810 2811 if ((ret = parse_allow_args(&argc, &argv, B_FALSE, &ds, 2812 &unused, &zperms)) == -1) 2813 return (1); 2814 2815 if (ret == 1) 2816 return (zfs_print_allows(argv[0])); 2817 2818 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL) 2819 return (1); 2820 2821 if (zfs_perm_set(zhp, zperms)) { 2822 zfs_close(zhp); 2823 nvlist_free(zperms); 2824 return (1); 2825 } 2826 nvlist_free(zperms); 2827 zfs_close(zhp); 2828 2829 return (0); 2830 } 2831 2832 static int 2833 unallow_callback(zfs_handle_t *zhp, void *data) 2834 { 2835 nvlist_t *nvp = (nvlist_t *)data; 2836 int error; 2837 2838 error = zfs_perm_remove(zhp, nvp); 2839 if (error) { 2840 (void) fprintf(stderr, gettext("Failed to remove permissions " 2841 "on %s\n"), zfs_get_name(zhp)); 2842 } 2843 return (error); 2844 } 2845 2846 static int 2847 zfs_do_unallow(int argc, char **argv) 2848 { 2849 int recurse = B_FALSE; 2850 char *ds; 2851 int error; 2852 nvlist_t *zperms = NULL; 2853 2854 if (parse_allow_args(&argc, &argv, B_TRUE, 2855 &ds, &recurse, &zperms) == -1) 2856 return (1); 2857 2858 error = zfs_for_each(argc, argv, recurse, 2859 ZFS_TYPE_FILESYSTEM|ZFS_TYPE_VOLUME, NULL, 2860 NULL, unallow_callback, (void *)zperms, B_FALSE); 2861 2862 if (zperms) 2863 nvlist_free(zperms); 2864 2865 return (error); 2866 } 2867 2868 typedef struct get_all_cbdata { 2869 zfs_handle_t **cb_handles; 2870 size_t cb_alloc; 2871 size_t cb_used; 2872 uint_t cb_types; 2873 boolean_t cb_verbose; 2874 } get_all_cbdata_t; 2875 2876 #define CHECK_SPINNER 30 2877 #define SPINNER_TIME 3 /* seconds */ 2878 #define MOUNT_TIME 5 /* seconds */ 2879 2880 static int 2881 get_one_dataset(zfs_handle_t *zhp, void *data) 2882 { 2883 static char spin[] = { '-', '\\', '|', '/' }; 2884 static int spinval = 0; 2885 static int spincheck = 0; 2886 static time_t last_spin_time = (time_t)0; 2887 get_all_cbdata_t *cbp = data; 2888 zfs_type_t type = zfs_get_type(zhp); 2889 2890 if (cbp->cb_verbose) { 2891 if (--spincheck < 0) { 2892 time_t now = time(NULL); 2893 if (last_spin_time + SPINNER_TIME < now) { 2894 (void) printf("\b%c", spin[spinval++ % 4]); 2895 (void) fflush(stdout); 2896 last_spin_time = now; 2897 } 2898 spincheck = CHECK_SPINNER; 2899 } 2900 } 2901 2902 /* 2903 * Interate over any nested datasets. 2904 */ 2905 if (type == ZFS_TYPE_FILESYSTEM && 2906 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) { 2907 zfs_close(zhp); 2908 return (1); 2909 } 2910 2911 /* 2912 * Skip any datasets whose type does not match. 2913 */ 2914 if ((type & cbp->cb_types) == 0) { 2915 zfs_close(zhp); 2916 return (0); 2917 } 2918 2919 if (cbp->cb_alloc == cbp->cb_used) { 2920 zfs_handle_t **handles; 2921 2922 if (cbp->cb_alloc == 0) 2923 cbp->cb_alloc = 64; 2924 else 2925 cbp->cb_alloc *= 2; 2926 2927 handles = safe_malloc(cbp->cb_alloc * sizeof (void *)); 2928 2929 if (cbp->cb_handles) { 2930 bcopy(cbp->cb_handles, handles, 2931 cbp->cb_used * sizeof (void *)); 2932 free(cbp->cb_handles); 2933 } 2934 2935 cbp->cb_handles = handles; 2936 } 2937 2938 cbp->cb_handles[cbp->cb_used++] = zhp; 2939 2940 return (0); 2941 } 2942 2943 static void 2944 get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count, 2945 boolean_t verbose) 2946 { 2947 get_all_cbdata_t cb = { 0 }; 2948 cb.cb_types = types; 2949 cb.cb_verbose = verbose; 2950 2951 if (verbose) { 2952 (void) printf("%s: *", gettext("Reading ZFS config")); 2953 (void) fflush(stdout); 2954 } 2955 2956 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb); 2957 2958 *dslist = cb.cb_handles; 2959 *count = cb.cb_used; 2960 2961 if (verbose) { 2962 (void) printf("\b%s\n", gettext("done.")); 2963 } 2964 } 2965 2966 static int 2967 dataset_cmp(const void *a, const void *b) 2968 { 2969 zfs_handle_t **za = (zfs_handle_t **)a; 2970 zfs_handle_t **zb = (zfs_handle_t **)b; 2971 char mounta[MAXPATHLEN]; 2972 char mountb[MAXPATHLEN]; 2973 boolean_t gota, gotb; 2974 2975 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0) 2976 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta, 2977 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0); 2978 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0) 2979 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb, 2980 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0); 2981 2982 if (gota && gotb) 2983 return (strcmp(mounta, mountb)); 2984 2985 if (gota) 2986 return (-1); 2987 if (gotb) 2988 return (1); 2989 2990 return (strcmp(zfs_get_name(a), zfs_get_name(b))); 2991 } 2992 2993 /* 2994 * Generic callback for sharing or mounting filesystems. Because the code is so 2995 * similar, we have a common function with an extra parameter to determine which 2996 * mode we are using. 2997 */ 2998 #define OP_SHARE 0x1 2999 #define OP_MOUNT 0x2 3000 3001 /* 3002 * Share or mount a dataset. 3003 */ 3004 static int 3005 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol, 3006 boolean_t explicit, const char *options) 3007 { 3008 char mountpoint[ZFS_MAXPROPLEN]; 3009 char shareopts[ZFS_MAXPROPLEN]; 3010 char smbshareopts[ZFS_MAXPROPLEN]; 3011 const char *cmdname = op == OP_SHARE ? "share" : "mount"; 3012 struct mnttab mnt; 3013 uint64_t zoned, canmount; 3014 zfs_type_t type = zfs_get_type(zhp); 3015 boolean_t shared_nfs, shared_smb; 3016 3017 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)); 3018 3019 if (type == ZFS_TYPE_FILESYSTEM) { 3020 /* 3021 * Check to make sure we can mount/share this dataset. If we 3022 * are in the global zone and the filesystem is exported to a 3023 * local zone, or if we are in a local zone and the 3024 * filesystem is not exported, then it is an error. 3025 */ 3026 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 3027 3028 if (zoned && getzoneid() == GLOBAL_ZONEID) { 3029 if (!explicit) 3030 return (0); 3031 3032 (void) fprintf(stderr, gettext("cannot %s '%s': " 3033 "dataset is exported to a local zone\n"), cmdname, 3034 zfs_get_name(zhp)); 3035 return (1); 3036 3037 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) { 3038 if (!explicit) 3039 return (0); 3040 3041 (void) fprintf(stderr, gettext("cannot %s '%s': " 3042 "permission denied\n"), cmdname, 3043 zfs_get_name(zhp)); 3044 return (1); 3045 } 3046 3047 /* 3048 * Ignore any filesystems which don't apply to us. This 3049 * includes those with a legacy mountpoint, or those with 3050 * legacy share options. 3051 */ 3052 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 3053 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0); 3054 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts, 3055 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3056 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts, 3057 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0); 3058 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 3059 3060 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 && 3061 strcmp(smbshareopts, "off") == 0) { 3062 if (!explicit) 3063 return (0); 3064 3065 (void) fprintf(stderr, gettext("cannot share '%s': " 3066 "legacy share\n"), zfs_get_name(zhp)); 3067 (void) fprintf(stderr, gettext("use share(1M) to " 3068 "share this filesystem\n")); 3069 return (1); 3070 } 3071 3072 /* 3073 * We cannot share or mount legacy filesystems. If the 3074 * shareopts is non-legacy but the mountpoint is legacy, we 3075 * treat it as a legacy share. 3076 */ 3077 if (strcmp(mountpoint, "legacy") == 0) { 3078 if (!explicit) 3079 return (0); 3080 3081 (void) fprintf(stderr, gettext("cannot %s '%s': " 3082 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp)); 3083 (void) fprintf(stderr, gettext("use %s(1M) to " 3084 "%s this filesystem\n"), cmdname, cmdname); 3085 return (1); 3086 } 3087 3088 if (strcmp(mountpoint, "none") == 0) { 3089 if (!explicit) 3090 return (0); 3091 3092 (void) fprintf(stderr, gettext("cannot %s '%s': no " 3093 "mountpoint set\n"), cmdname, zfs_get_name(zhp)); 3094 return (1); 3095 } 3096 3097 /* 3098 * canmount explicit outcome 3099 * on no pass through 3100 * on yes pass through 3101 * off no return 0 3102 * off yes display error, return 1 3103 * noauto no return 0 3104 * noauto yes pass through 3105 */ 3106 if (canmount == ZFS_CANMOUNT_OFF) { 3107 if (!explicit) 3108 return (0); 3109 3110 (void) fprintf(stderr, gettext("cannot %s '%s': " 3111 "'canmount' property is set to 'off'\n"), cmdname, 3112 zfs_get_name(zhp)); 3113 return (1); 3114 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) { 3115 return (0); 3116 } 3117 3118 /* 3119 * At this point, we have verified that the mountpoint and/or 3120 * shareopts are appropriate for auto management. If the 3121 * filesystem is already mounted or shared, return (failing 3122 * for explicit requests); otherwise mount or share the 3123 * filesystem. 3124 */ 3125 switch (op) { 3126 case OP_SHARE: 3127 3128 shared_nfs = zfs_is_shared_nfs(zhp, NULL); 3129 shared_smb = zfs_is_shared_smb(zhp, NULL); 3130 3131 if (shared_nfs && shared_smb || 3132 (shared_nfs && strcmp(shareopts, "on") == 0 && 3133 strcmp(smbshareopts, "off") == 0) || 3134 (shared_smb && strcmp(smbshareopts, "on") == 0 && 3135 strcmp(shareopts, "off") == 0)) { 3136 if (!explicit) 3137 return (0); 3138 3139 (void) fprintf(stderr, gettext("cannot share " 3140 "'%s': filesystem already shared\n"), 3141 zfs_get_name(zhp)); 3142 return (1); 3143 } 3144 3145 if (!zfs_is_mounted(zhp, NULL) && 3146 zfs_mount(zhp, NULL, 0) != 0) 3147 return (1); 3148 3149 if (protocol == NULL) { 3150 if (zfs_shareall(zhp) != 0) 3151 return (1); 3152 } else if (strcmp(protocol, "nfs") == 0) { 3153 if (zfs_share_nfs(zhp)) 3154 return (1); 3155 } else if (strcmp(protocol, "smb") == 0) { 3156 if (zfs_share_smb(zhp)) 3157 return (1); 3158 } else { 3159 (void) fprintf(stderr, gettext("cannot share " 3160 "'%s': invalid share type '%s' " 3161 "specified\n"), 3162 zfs_get_name(zhp), protocol); 3163 return (1); 3164 } 3165 3166 break; 3167 3168 case OP_MOUNT: 3169 if (options == NULL) 3170 mnt.mnt_mntopts = ""; 3171 else 3172 mnt.mnt_mntopts = (char *)options; 3173 3174 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) && 3175 zfs_is_mounted(zhp, NULL)) { 3176 if (!explicit) 3177 return (0); 3178 3179 (void) fprintf(stderr, gettext("cannot mount " 3180 "'%s': filesystem already mounted\n"), 3181 zfs_get_name(zhp)); 3182 return (1); 3183 } 3184 3185 if (zfs_mount(zhp, options, flags) != 0) 3186 return (1); 3187 break; 3188 } 3189 } else { 3190 assert(op == OP_SHARE); 3191 3192 /* 3193 * Ignore any volumes that aren't shared. 3194 */ 3195 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts, 3196 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3197 3198 if (strcmp(shareopts, "off") == 0) { 3199 if (!explicit) 3200 return (0); 3201 3202 (void) fprintf(stderr, gettext("cannot share '%s': " 3203 "'shareiscsi' property not set\n"), 3204 zfs_get_name(zhp)); 3205 (void) fprintf(stderr, gettext("set 'shareiscsi' " 3206 "property or use iscsitadm(1M) to share this " 3207 "volume\n")); 3208 return (1); 3209 } 3210 3211 if (zfs_is_shared_iscsi(zhp)) { 3212 if (!explicit) 3213 return (0); 3214 3215 (void) fprintf(stderr, gettext("cannot share " 3216 "'%s': volume already shared\n"), 3217 zfs_get_name(zhp)); 3218 return (1); 3219 } 3220 3221 if (zfs_share_iscsi(zhp) != 0) 3222 return (1); 3223 } 3224 3225 return (0); 3226 } 3227 3228 /* 3229 * Reports progress in the form "(current/total)". Not thread-safe. 3230 */ 3231 static void 3232 report_mount_progress(int current, int total) 3233 { 3234 static int len; 3235 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b" 3236 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"; 3237 static time_t last_progress_time; 3238 time_t now = time(NULL); 3239 3240 /* report 1..n instead of 0..n-1 */ 3241 ++current; 3242 3243 /* display header if we're here for the first time */ 3244 if (current == 1) { 3245 (void) printf(gettext("Mounting ZFS filesystems: ")); 3246 len = 0; 3247 } else if (current != total && last_progress_time + MOUNT_TIME >= now) { 3248 /* too soon to report again */ 3249 return; 3250 } 3251 3252 last_progress_time = now; 3253 3254 /* back up to prepare for overwriting */ 3255 if (len) 3256 (void) printf("%*.*s", len, len, reverse); 3257 3258 /* We put a newline at the end if this is the last one. */ 3259 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : ""); 3260 (void) fflush(stdout); 3261 } 3262 3263 static void 3264 append_options(char *mntopts, char *newopts) 3265 { 3266 int len = strlen(mntopts); 3267 3268 /* original length plus new string to append plus 1 for the comma */ 3269 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) { 3270 (void) fprintf(stderr, gettext("the opts argument for " 3271 "'%c' option is too long (more than %d chars)\n"), 3272 "-o", MNT_LINE_MAX); 3273 usage(B_FALSE); 3274 } 3275 3276 if (*mntopts) 3277 mntopts[len++] = ','; 3278 3279 (void) strcpy(&mntopts[len], newopts); 3280 } 3281 3282 static int 3283 share_mount(int op, int argc, char **argv) 3284 { 3285 int do_all = 0; 3286 boolean_t verbose = B_FALSE; 3287 int c, ret = 0; 3288 char *options = NULL; 3289 int types, flags = 0; 3290 3291 /* check options */ 3292 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a")) 3293 != -1) { 3294 switch (c) { 3295 case 'a': 3296 do_all = 1; 3297 break; 3298 case 'v': 3299 verbose = B_TRUE; 3300 break; 3301 case 'o': 3302 if (*optarg == '\0') { 3303 (void) fprintf(stderr, gettext("empty mount " 3304 "options (-o) specified\n")); 3305 usage(B_FALSE); 3306 } 3307 3308 if (options == NULL) 3309 options = safe_malloc(MNT_LINE_MAX + 1); 3310 3311 /* option validation is done later */ 3312 append_options(options, optarg); 3313 break; 3314 3315 case 'O': 3316 flags |= MS_OVERLAY; 3317 break; 3318 case ':': 3319 (void) fprintf(stderr, gettext("missing argument for " 3320 "'%c' option\n"), optopt); 3321 usage(B_FALSE); 3322 break; 3323 case '?': 3324 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3325 optopt); 3326 usage(B_FALSE); 3327 } 3328 } 3329 3330 argc -= optind; 3331 argv += optind; 3332 3333 /* check number of arguments */ 3334 if (do_all) { 3335 zfs_handle_t **dslist = NULL; 3336 size_t i, count = 0; 3337 char *protocol = NULL; 3338 3339 if (op == OP_MOUNT) { 3340 types = ZFS_TYPE_FILESYSTEM; 3341 } else if (argc > 0) { 3342 if (strcmp(argv[0], "nfs") == 0 || 3343 strcmp(argv[0], "smb") == 0) { 3344 types = ZFS_TYPE_FILESYSTEM; 3345 } else if (strcmp(argv[0], "iscsi") == 0) { 3346 types = ZFS_TYPE_VOLUME; 3347 } else { 3348 (void) fprintf(stderr, gettext("share type " 3349 "must be 'nfs', 'smb' or 'iscsi'\n")); 3350 usage(B_FALSE); 3351 } 3352 protocol = argv[0]; 3353 argc--; 3354 argv++; 3355 } else { 3356 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME; 3357 } 3358 3359 if (argc != 0) { 3360 (void) fprintf(stderr, gettext("too many arguments\n")); 3361 usage(B_FALSE); 3362 } 3363 3364 get_all_datasets(types, &dslist, &count, verbose); 3365 3366 if (count == 0) 3367 return (0); 3368 3369 qsort(dslist, count, sizeof (void *), dataset_cmp); 3370 3371 for (i = 0; i < count; i++) { 3372 if (verbose) 3373 report_mount_progress(i, count); 3374 3375 if (share_mount_one(dslist[i], op, flags, protocol, 3376 B_FALSE, options) != 0) 3377 ret = 1; 3378 zfs_close(dslist[i]); 3379 } 3380 3381 free(dslist); 3382 } else if (argc == 0) { 3383 struct mnttab entry; 3384 3385 if ((op == OP_SHARE) || (options != NULL)) { 3386 (void) fprintf(stderr, gettext("missing filesystem " 3387 "argument (specify -a for all)\n")); 3388 usage(B_FALSE); 3389 } 3390 3391 /* 3392 * When mount is given no arguments, go through /etc/mnttab and 3393 * display any active ZFS mounts. We hide any snapshots, since 3394 * they are controlled automatically. 3395 */ 3396 rewind(mnttab_file); 3397 while (getmntent(mnttab_file, &entry) == 0) { 3398 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 || 3399 strchr(entry.mnt_special, '@') != NULL) 3400 continue; 3401 3402 (void) printf("%-30s %s\n", entry.mnt_special, 3403 entry.mnt_mountp); 3404 } 3405 3406 } else { 3407 zfs_handle_t *zhp; 3408 3409 types = ZFS_TYPE_FILESYSTEM; 3410 if (op == OP_SHARE) 3411 types |= ZFS_TYPE_VOLUME; 3412 3413 if (argc > 1) { 3414 (void) fprintf(stderr, 3415 gettext("too many arguments\n")); 3416 usage(B_FALSE); 3417 } 3418 3419 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) { 3420 ret = 1; 3421 } else { 3422 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE, 3423 options); 3424 zfs_close(zhp); 3425 } 3426 } 3427 3428 return (ret); 3429 } 3430 3431 /* 3432 * zfs mount -a [nfs | iscsi] 3433 * zfs mount filesystem 3434 * 3435 * Mount all filesystems, or mount the given filesystem. 3436 */ 3437 static int 3438 zfs_do_mount(int argc, char **argv) 3439 { 3440 return (share_mount(OP_MOUNT, argc, argv)); 3441 } 3442 3443 /* 3444 * zfs share -a [nfs | iscsi | smb] 3445 * zfs share filesystem 3446 * 3447 * Share all filesystems, or share the given filesystem. 3448 */ 3449 static int 3450 zfs_do_share(int argc, char **argv) 3451 { 3452 return (share_mount(OP_SHARE, argc, argv)); 3453 } 3454 3455 typedef struct unshare_unmount_node { 3456 zfs_handle_t *un_zhp; 3457 char *un_mountp; 3458 uu_avl_node_t un_avlnode; 3459 } unshare_unmount_node_t; 3460 3461 /* ARGSUSED */ 3462 static int 3463 unshare_unmount_compare(const void *larg, const void *rarg, void *unused) 3464 { 3465 const unshare_unmount_node_t *l = larg; 3466 const unshare_unmount_node_t *r = rarg; 3467 3468 return (strcmp(l->un_mountp, r->un_mountp)); 3469 } 3470 3471 /* 3472 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an 3473 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem, 3474 * and unmount it appropriately. 3475 */ 3476 static int 3477 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual) 3478 { 3479 zfs_handle_t *zhp; 3480 int ret; 3481 struct stat64 statbuf; 3482 struct extmnttab entry; 3483 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount"; 3484 ino_t path_inode; 3485 3486 /* 3487 * Search for the path in /etc/mnttab. Rather than looking for the 3488 * specific path, which can be fooled by non-standard paths (i.e. ".." 3489 * or "//"), we stat() the path and search for the corresponding 3490 * (major,minor) device pair. 3491 */ 3492 if (stat64(path, &statbuf) != 0) { 3493 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3494 cmdname, path, strerror(errno)); 3495 return (1); 3496 } 3497 path_inode = statbuf.st_ino; 3498 3499 /* 3500 * Search for the given (major,minor) pair in the mount table. 3501 */ 3502 rewind(mnttab_file); 3503 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) { 3504 if (entry.mnt_major == major(statbuf.st_dev) && 3505 entry.mnt_minor == minor(statbuf.st_dev)) 3506 break; 3507 } 3508 if (ret != 0) { 3509 if (op == OP_SHARE) { 3510 (void) fprintf(stderr, gettext("cannot %s '%s': not " 3511 "currently mounted\n"), cmdname, path); 3512 return (1); 3513 } 3514 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"), 3515 path); 3516 if ((ret = umount2(path, flags)) != 0) 3517 (void) fprintf(stderr, gettext("%s: %s\n"), path, 3518 strerror(errno)); 3519 return (ret != 0); 3520 } 3521 3522 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) { 3523 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS " 3524 "filesystem\n"), cmdname, path); 3525 return (1); 3526 } 3527 3528 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3529 ZFS_TYPE_FILESYSTEM)) == NULL) 3530 return (1); 3531 3532 3533 ret = 1; 3534 if (op == OP_SHARE) { 3535 char nfs_mnt_prop[ZFS_MAXPROPLEN]; 3536 char smbshare_prop[ZFS_MAXPROPLEN]; 3537 3538 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop, 3539 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0); 3540 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop, 3541 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0); 3542 3543 if (strcmp(nfs_mnt_prop, "off") == 0 && 3544 strcmp(smbshare_prop, "off") == 0) { 3545 (void) fprintf(stderr, gettext("cannot unshare " 3546 "'%s': legacy share\n"), path); 3547 (void) fprintf(stderr, gettext("use " 3548 "unshare(1M) to unshare this filesystem\n")); 3549 } else if (!zfs_is_shared(zhp)) { 3550 (void) fprintf(stderr, gettext("cannot unshare '%s': " 3551 "not currently shared\n"), path); 3552 } else { 3553 ret = zfs_unshareall_bypath(zhp, path); 3554 } 3555 } else { 3556 char mtpt_prop[ZFS_MAXPROPLEN]; 3557 3558 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop, 3559 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0); 3560 3561 if (stat64(entry.mnt_mountp, &statbuf) != 0) { 3562 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3563 cmdname, path, strerror(errno)); 3564 } else if (statbuf.st_ino != path_inode) { 3565 (void) fprintf(stderr, gettext("cannot " 3566 "unmount '%s': not a mountpoint\n"), path); 3567 } else if (is_manual) { 3568 ret = zfs_unmount(zhp, NULL, flags); 3569 } else if (strcmp(mtpt_prop, "legacy") == 0) { 3570 (void) fprintf(stderr, gettext("cannot unmount " 3571 "'%s': legacy mountpoint\n"), 3572 zfs_get_name(zhp)); 3573 (void) fprintf(stderr, gettext("use umount(1M) " 3574 "to unmount this filesystem\n")); 3575 } else { 3576 ret = zfs_unmountall(zhp, flags); 3577 } 3578 } 3579 3580 zfs_close(zhp); 3581 3582 return (ret != 0); 3583 } 3584 3585 /* 3586 * Generic callback for unsharing or unmounting a filesystem. 3587 */ 3588 static int 3589 unshare_unmount(int op, int argc, char **argv) 3590 { 3591 int do_all = 0; 3592 int flags = 0; 3593 int ret = 0; 3594 int types, c; 3595 zfs_handle_t *zhp; 3596 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN]; 3597 char sharesmb[ZFS_MAXPROPLEN]; 3598 3599 /* check options */ 3600 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) { 3601 switch (c) { 3602 case 'a': 3603 do_all = 1; 3604 break; 3605 case 'f': 3606 flags = MS_FORCE; 3607 break; 3608 case '?': 3609 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3610 optopt); 3611 usage(B_FALSE); 3612 } 3613 } 3614 3615 argc -= optind; 3616 argv += optind; 3617 3618 if (do_all) { 3619 /* 3620 * We could make use of zfs_for_each() to walk all datasets in 3621 * the system, but this would be very inefficient, especially 3622 * since we would have to linearly search /etc/mnttab for each 3623 * one. Instead, do one pass through /etc/mnttab looking for 3624 * zfs entries and call zfs_unmount() for each one. 3625 * 3626 * Things get a little tricky if the administrator has created 3627 * mountpoints beneath other ZFS filesystems. In this case, we 3628 * have to unmount the deepest filesystems first. To accomplish 3629 * this, we place all the mountpoints in an AVL tree sorted by 3630 * the special type (dataset name), and walk the result in 3631 * reverse to make sure to get any snapshots first. 3632 */ 3633 struct mnttab entry; 3634 uu_avl_pool_t *pool; 3635 uu_avl_t *tree; 3636 unshare_unmount_node_t *node; 3637 uu_avl_index_t idx; 3638 uu_avl_walk_t *walk; 3639 3640 if (argc != 0) { 3641 (void) fprintf(stderr, gettext("too many arguments\n")); 3642 usage(B_FALSE); 3643 } 3644 3645 if ((pool = uu_avl_pool_create("unmount_pool", 3646 sizeof (unshare_unmount_node_t), 3647 offsetof(unshare_unmount_node_t, un_avlnode), 3648 unshare_unmount_compare, 3649 UU_DEFAULT)) == NULL) { 3650 (void) fprintf(stderr, gettext("internal error: " 3651 "out of memory\n")); 3652 exit(1); 3653 } 3654 3655 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) { 3656 (void) fprintf(stderr, gettext("internal error: " 3657 "out of memory\n")); 3658 exit(1); 3659 } 3660 3661 rewind(mnttab_file); 3662 while (getmntent(mnttab_file, &entry) == 0) { 3663 3664 /* ignore non-ZFS entries */ 3665 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 3666 continue; 3667 3668 /* ignore snapshots */ 3669 if (strchr(entry.mnt_special, '@') != NULL) 3670 continue; 3671 3672 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3673 ZFS_TYPE_FILESYSTEM)) == NULL) { 3674 ret = 1; 3675 continue; 3676 } 3677 3678 switch (op) { 3679 case OP_SHARE: 3680 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3681 nfsiscsi_mnt_prop, 3682 sizeof (nfsiscsi_mnt_prop), 3683 NULL, NULL, 0, B_FALSE) == 0); 3684 if (strcmp(nfsiscsi_mnt_prop, "off") != 0) 3685 break; 3686 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3687 nfsiscsi_mnt_prop, 3688 sizeof (nfsiscsi_mnt_prop), 3689 NULL, NULL, 0, B_FALSE) == 0); 3690 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) 3691 continue; 3692 break; 3693 case OP_MOUNT: 3694 /* Ignore legacy mounts */ 3695 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, 3696 nfsiscsi_mnt_prop, 3697 sizeof (nfsiscsi_mnt_prop), 3698 NULL, NULL, 0, B_FALSE) == 0); 3699 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) 3700 continue; 3701 /* Ignore canmount=noauto mounts */ 3702 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == 3703 ZFS_CANMOUNT_NOAUTO) 3704 continue; 3705 default: 3706 break; 3707 } 3708 3709 node = safe_malloc(sizeof (unshare_unmount_node_t)); 3710 node->un_zhp = zhp; 3711 3712 if ((node->un_mountp = strdup(entry.mnt_mountp)) == 3713 NULL) { 3714 (void) fprintf(stderr, gettext("internal error:" 3715 " out of memory\n")); 3716 exit(1); 3717 } 3718 3719 uu_avl_node_init(node, &node->un_avlnode, pool); 3720 3721 if (uu_avl_find(tree, node, NULL, &idx) == NULL) { 3722 uu_avl_insert(tree, node, idx); 3723 } else { 3724 zfs_close(node->un_zhp); 3725 free(node->un_mountp); 3726 free(node); 3727 } 3728 } 3729 3730 /* 3731 * Walk the AVL tree in reverse, unmounting each filesystem and 3732 * removing it from the AVL tree in the process. 3733 */ 3734 if ((walk = uu_avl_walk_start(tree, 3735 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) { 3736 (void) fprintf(stderr, 3737 gettext("internal error: out of memory")); 3738 exit(1); 3739 } 3740 3741 while ((node = uu_avl_walk_next(walk)) != NULL) { 3742 uu_avl_remove(tree, node); 3743 3744 switch (op) { 3745 case OP_SHARE: 3746 if (zfs_unshareall_bypath(node->un_zhp, 3747 node->un_mountp) != 0) 3748 ret = 1; 3749 break; 3750 3751 case OP_MOUNT: 3752 if (zfs_unmount(node->un_zhp, 3753 node->un_mountp, flags) != 0) 3754 ret = 1; 3755 break; 3756 } 3757 3758 zfs_close(node->un_zhp); 3759 free(node->un_mountp); 3760 free(node); 3761 } 3762 3763 uu_avl_walk_end(walk); 3764 uu_avl_destroy(tree); 3765 uu_avl_pool_destroy(pool); 3766 3767 if (op == OP_SHARE) { 3768 /* 3769 * Finally, unshare any volumes shared via iSCSI. 3770 */ 3771 zfs_handle_t **dslist = NULL; 3772 size_t i, count = 0; 3773 3774 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count, 3775 B_FALSE); 3776 3777 if (count != 0) { 3778 qsort(dslist, count, sizeof (void *), 3779 dataset_cmp); 3780 3781 for (i = 0; i < count; i++) { 3782 if (zfs_unshare_iscsi(dslist[i]) != 0) 3783 ret = 1; 3784 zfs_close(dslist[i]); 3785 } 3786 3787 free(dslist); 3788 } 3789 } 3790 } else { 3791 if (argc != 1) { 3792 if (argc == 0) 3793 (void) fprintf(stderr, 3794 gettext("missing filesystem argument\n")); 3795 else 3796 (void) fprintf(stderr, 3797 gettext("too many arguments\n")); 3798 usage(B_FALSE); 3799 } 3800 3801 /* 3802 * We have an argument, but it may be a full path or a ZFS 3803 * filesystem. Pass full paths off to unmount_path() (shared by 3804 * manual_unmount), otherwise open the filesystem and pass to 3805 * zfs_unmount(). 3806 */ 3807 if (argv[0][0] == '/') 3808 return (unshare_unmount_path(op, argv[0], 3809 flags, B_FALSE)); 3810 3811 types = ZFS_TYPE_FILESYSTEM; 3812 if (op == OP_SHARE) 3813 types |= ZFS_TYPE_VOLUME; 3814 3815 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) 3816 return (1); 3817 3818 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 3819 verify(zfs_prop_get(zhp, op == OP_SHARE ? 3820 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, 3821 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL, 3822 NULL, 0, B_FALSE) == 0); 3823 3824 switch (op) { 3825 case OP_SHARE: 3826 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3827 nfsiscsi_mnt_prop, 3828 sizeof (nfsiscsi_mnt_prop), 3829 NULL, NULL, 0, B_FALSE) == 0); 3830 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3831 sharesmb, sizeof (sharesmb), NULL, NULL, 3832 0, B_FALSE) == 0); 3833 3834 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 && 3835 strcmp(sharesmb, "off") == 0) { 3836 (void) fprintf(stderr, gettext("cannot " 3837 "unshare '%s': legacy share\n"), 3838 zfs_get_name(zhp)); 3839 (void) fprintf(stderr, gettext("use " 3840 "unshare(1M) to unshare this " 3841 "filesystem\n")); 3842 ret = 1; 3843 } else if (!zfs_is_shared(zhp)) { 3844 (void) fprintf(stderr, gettext("cannot " 3845 "unshare '%s': not currently " 3846 "shared\n"), zfs_get_name(zhp)); 3847 ret = 1; 3848 } else if (zfs_unshareall(zhp) != 0) { 3849 ret = 1; 3850 } 3851 break; 3852 3853 case OP_MOUNT: 3854 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) { 3855 (void) fprintf(stderr, gettext("cannot " 3856 "unmount '%s': legacy " 3857 "mountpoint\n"), zfs_get_name(zhp)); 3858 (void) fprintf(stderr, gettext("use " 3859 "umount(1M) to unmount this " 3860 "filesystem\n")); 3861 ret = 1; 3862 } else if (!zfs_is_mounted(zhp, NULL)) { 3863 (void) fprintf(stderr, gettext("cannot " 3864 "unmount '%s': not currently " 3865 "mounted\n"), 3866 zfs_get_name(zhp)); 3867 ret = 1; 3868 } else if (zfs_unmountall(zhp, flags) != 0) { 3869 ret = 1; 3870 } 3871 break; 3872 } 3873 } else { 3874 assert(op == OP_SHARE); 3875 3876 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, 3877 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), 3878 NULL, NULL, 0, B_FALSE) == 0); 3879 3880 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) { 3881 (void) fprintf(stderr, gettext("cannot unshare " 3882 "'%s': 'shareiscsi' property not set\n"), 3883 zfs_get_name(zhp)); 3884 (void) fprintf(stderr, gettext("set " 3885 "'shareiscsi' property or use " 3886 "iscsitadm(1M) to share this volume\n")); 3887 ret = 1; 3888 } else if (!zfs_is_shared_iscsi(zhp)) { 3889 (void) fprintf(stderr, gettext("cannot " 3890 "unshare '%s': not currently shared\n"), 3891 zfs_get_name(zhp)); 3892 ret = 1; 3893 } else if (zfs_unshare_iscsi(zhp) != 0) { 3894 ret = 1; 3895 } 3896 } 3897 3898 zfs_close(zhp); 3899 } 3900 3901 return (ret); 3902 } 3903 3904 /* 3905 * zfs unmount -a 3906 * zfs unmount filesystem 3907 * 3908 * Unmount all filesystems, or a specific ZFS filesystem. 3909 */ 3910 static int 3911 zfs_do_unmount(int argc, char **argv) 3912 { 3913 return (unshare_unmount(OP_MOUNT, argc, argv)); 3914 } 3915 3916 /* 3917 * zfs unshare -a 3918 * zfs unshare filesystem 3919 * 3920 * Unshare all filesystems, or a specific ZFS filesystem. 3921 */ 3922 static int 3923 zfs_do_unshare(int argc, char **argv) 3924 { 3925 return (unshare_unmount(OP_SHARE, argc, argv)); 3926 } 3927 3928 /* 3929 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is 3930 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'. 3931 */ 3932 static int 3933 manual_mount(int argc, char **argv) 3934 { 3935 zfs_handle_t *zhp; 3936 char mountpoint[ZFS_MAXPROPLEN]; 3937 char mntopts[MNT_LINE_MAX] = { '\0' }; 3938 int ret; 3939 int c; 3940 int flags = 0; 3941 char *dataset, *path; 3942 3943 /* check options */ 3944 while ((c = getopt(argc, argv, ":mo:O")) != -1) { 3945 switch (c) { 3946 case 'o': 3947 (void) strlcpy(mntopts, optarg, sizeof (mntopts)); 3948 break; 3949 case 'O': 3950 flags |= MS_OVERLAY; 3951 break; 3952 case 'm': 3953 flags |= MS_NOMNTTAB; 3954 break; 3955 case ':': 3956 (void) fprintf(stderr, gettext("missing argument for " 3957 "'%c' option\n"), optopt); 3958 usage(B_FALSE); 3959 break; 3960 case '?': 3961 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3962 optopt); 3963 (void) fprintf(stderr, gettext("usage: mount [-o opts] " 3964 "<path>\n")); 3965 return (2); 3966 } 3967 } 3968 3969 argc -= optind; 3970 argv += optind; 3971 3972 /* check that we only have two arguments */ 3973 if (argc != 2) { 3974 if (argc == 0) 3975 (void) fprintf(stderr, gettext("missing dataset " 3976 "argument\n")); 3977 else if (argc == 1) 3978 (void) fprintf(stderr, 3979 gettext("missing mountpoint argument\n")); 3980 else 3981 (void) fprintf(stderr, gettext("too many arguments\n")); 3982 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n"); 3983 return (2); 3984 } 3985 3986 dataset = argv[0]; 3987 path = argv[1]; 3988 3989 /* try to open the dataset */ 3990 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL) 3991 return (1); 3992 3993 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 3994 sizeof (mountpoint), NULL, NULL, 0, B_FALSE); 3995 3996 /* check for legacy mountpoint and complain appropriately */ 3997 ret = 0; 3998 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) { 3999 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS, 4000 NULL, 0, mntopts, sizeof (mntopts)) != 0) { 4001 (void) fprintf(stderr, gettext("mount failed: %s\n"), 4002 strerror(errno)); 4003 ret = 1; 4004 } 4005 } else { 4006 (void) fprintf(stderr, gettext("filesystem '%s' cannot be " 4007 "mounted using 'mount -F zfs'\n"), dataset); 4008 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' " 4009 "instead.\n"), path); 4010 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' " 4011 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n")); 4012 (void) fprintf(stderr, gettext("See zfs(1M) for more " 4013 "information.\n")); 4014 ret = 1; 4015 } 4016 4017 return (ret); 4018 } 4019 4020 /* 4021 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow 4022 * unmounts of non-legacy filesystems, as this is the dominant administrative 4023 * interface. 4024 */ 4025 static int 4026 manual_unmount(int argc, char **argv) 4027 { 4028 int flags = 0; 4029 int c; 4030 4031 /* check options */ 4032 while ((c = getopt(argc, argv, "f")) != -1) { 4033 switch (c) { 4034 case 'f': 4035 flags = MS_FORCE; 4036 break; 4037 case '?': 4038 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 4039 optopt); 4040 (void) fprintf(stderr, gettext("usage: unmount [-f] " 4041 "<path>\n")); 4042 return (2); 4043 } 4044 } 4045 4046 argc -= optind; 4047 argv += optind; 4048 4049 /* check arguments */ 4050 if (argc != 1) { 4051 if (argc == 0) 4052 (void) fprintf(stderr, gettext("missing path " 4053 "argument\n")); 4054 else 4055 (void) fprintf(stderr, gettext("too many arguments\n")); 4056 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n")); 4057 return (2); 4058 } 4059 4060 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE)); 4061 } 4062 4063 static int 4064 volcheck(zpool_handle_t *zhp, void *data) 4065 { 4066 boolean_t isinit = *((boolean_t *)data); 4067 4068 if (isinit) 4069 return (zpool_create_zvol_links(zhp)); 4070 else 4071 return (zpool_remove_zvol_links(zhp)); 4072 } 4073 4074 /* 4075 * Iterate over all pools in the system and either create or destroy /dev/zvol 4076 * links, depending on the value of 'isinit'. 4077 */ 4078 static int 4079 do_volcheck(boolean_t isinit) 4080 { 4081 return (zpool_iter(g_zfs, volcheck, &isinit) ? 1 : 0); 4082 } 4083 4084 static int 4085 find_command_idx(char *command, int *idx) 4086 { 4087 int i; 4088 4089 for (i = 0; i < NCOMMAND; i++) { 4090 if (command_table[i].name == NULL) 4091 continue; 4092 4093 if (strcmp(command, command_table[i].name) == 0) { 4094 *idx = i; 4095 return (0); 4096 } 4097 } 4098 return (1); 4099 } 4100 4101 int 4102 main(int argc, char **argv) 4103 { 4104 int ret; 4105 int i; 4106 char *progname; 4107 char *cmdname; 4108 4109 (void) setlocale(LC_ALL, ""); 4110 (void) textdomain(TEXT_DOMAIN); 4111 4112 opterr = 0; 4113 4114 if ((g_zfs = libzfs_init()) == NULL) { 4115 (void) fprintf(stderr, gettext("internal error: failed to " 4116 "initialize ZFS library\n")); 4117 return (1); 4118 } 4119 4120 zpool_set_history_str("zfs", argc, argv, history_str); 4121 verify(zpool_stage_history(g_zfs, history_str) == 0); 4122 4123 libzfs_print_on_error(g_zfs, B_TRUE); 4124 4125 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) { 4126 (void) fprintf(stderr, gettext("internal error: unable to " 4127 "open %s\n"), MNTTAB); 4128 return (1); 4129 } 4130 4131 /* 4132 * This command also doubles as the /etc/fs mount and unmount program. 4133 * Determine if we should take this behavior based on argv[0]. 4134 */ 4135 progname = basename(argv[0]); 4136 if (strcmp(progname, "mount") == 0) { 4137 ret = manual_mount(argc, argv); 4138 } else if (strcmp(progname, "umount") == 0) { 4139 ret = manual_unmount(argc, argv); 4140 } else { 4141 /* 4142 * Make sure the user has specified some command. 4143 */ 4144 if (argc < 2) { 4145 (void) fprintf(stderr, gettext("missing command\n")); 4146 usage(B_FALSE); 4147 } 4148 4149 cmdname = argv[1]; 4150 4151 /* 4152 * The 'umount' command is an alias for 'unmount' 4153 */ 4154 if (strcmp(cmdname, "umount") == 0) 4155 cmdname = "unmount"; 4156 4157 /* 4158 * The 'recv' command is an alias for 'receive' 4159 */ 4160 if (strcmp(cmdname, "recv") == 0) 4161 cmdname = "receive"; 4162 4163 /* 4164 * Special case '-?' 4165 */ 4166 if (strcmp(cmdname, "-?") == 0) 4167 usage(B_TRUE); 4168 4169 /* 4170 * 'volinit' and 'volfini' do not appear in the usage message, 4171 * so we have to special case them here. 4172 */ 4173 if (strcmp(cmdname, "volinit") == 0) 4174 return (do_volcheck(B_TRUE)); 4175 else if (strcmp(cmdname, "volfini") == 0) 4176 return (do_volcheck(B_FALSE)); 4177 4178 /* 4179 * Run the appropriate command. 4180 */ 4181 if (find_command_idx(cmdname, &i) == 0) { 4182 current_command = &command_table[i]; 4183 ret = command_table[i].func(argc - 1, argv + 1); 4184 } else if (strchr(cmdname, '=') != NULL) { 4185 verify(find_command_idx("set", &i) == 0); 4186 current_command = &command_table[i]; 4187 ret = command_table[i].func(argc, argv); 4188 } else { 4189 (void) fprintf(stderr, gettext("unrecognized " 4190 "command '%s'\n"), cmdname); 4191 usage(B_FALSE); 4192 } 4193 } 4194 4195 (void) fclose(mnttab_file); 4196 4197 libzfs_fini(g_zfs); 4198 4199 /* 4200 * The 'ZFS_ABORT' environment variable causes us to dump core on exit 4201 * for the purposes of running ::findleaks. 4202 */ 4203 if (getenv("ZFS_ABORT") != NULL) { 4204 (void) printf("dumping core by request\n"); 4205 abort(); 4206 } 4207 4208 return (ret); 4209 } 4210