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 #include <assert.h> 28 #include <ctype.h> 29 #include <errno.h> 30 #include <libgen.h> 31 #include <libintl.h> 32 #include <libuutil.h> 33 #include <libnvpair.h> 34 #include <locale.h> 35 #include <stddef.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <strings.h> 39 #include <unistd.h> 40 #include <fcntl.h> 41 #include <zone.h> 42 #include <sys/mkdev.h> 43 #include <sys/mntent.h> 44 #include <sys/mnttab.h> 45 #include <sys/mount.h> 46 #include <sys/stat.h> 47 #include <sys/avl.h> 48 49 #include <libzfs.h> 50 #include <libuutil.h> 51 52 #include "zfs_iter.h" 53 #include "zfs_util.h" 54 55 libzfs_handle_t *g_zfs; 56 57 static FILE *mnttab_file; 58 static char history_str[HIS_MAX_RECORD_LEN]; 59 60 static int zfs_do_clone(int argc, char **argv); 61 static int zfs_do_create(int argc, char **argv); 62 static int zfs_do_destroy(int argc, char **argv); 63 static int zfs_do_get(int argc, char **argv); 64 static int zfs_do_inherit(int argc, char **argv); 65 static int zfs_do_list(int argc, char **argv); 66 static int zfs_do_mount(int argc, char **argv); 67 static int zfs_do_rename(int argc, char **argv); 68 static int zfs_do_rollback(int argc, char **argv); 69 static int zfs_do_set(int argc, char **argv); 70 static int zfs_do_upgrade(int argc, char **argv); 71 static int zfs_do_snapshot(int argc, char **argv); 72 static int zfs_do_unmount(int argc, char **argv); 73 static int zfs_do_share(int argc, char **argv); 74 static int zfs_do_unshare(int argc, char **argv); 75 static int zfs_do_send(int argc, char **argv); 76 static int zfs_do_receive(int argc, char **argv); 77 static int zfs_do_promote(int argc, char **argv); 78 static int zfs_do_allow(int argc, char **argv); 79 static int zfs_do_unallow(int argc, char **argv); 80 81 /* 82 * Enable a reasonable set of defaults for libumem debugging on DEBUG builds. 83 */ 84 85 #ifdef DEBUG 86 const char * 87 _umem_debug_init(void) 88 { 89 return ("default,verbose"); /* $UMEM_DEBUG setting */ 90 } 91 92 const char * 93 _umem_logging_init(void) 94 { 95 return ("fail,contents"); /* $UMEM_LOGGING setting */ 96 } 97 #endif 98 99 typedef enum { 100 HELP_CLONE, 101 HELP_CREATE, 102 HELP_DESTROY, 103 HELP_GET, 104 HELP_INHERIT, 105 HELP_UPGRADE, 106 HELP_LIST, 107 HELP_MOUNT, 108 HELP_PROMOTE, 109 HELP_RECEIVE, 110 HELP_RENAME, 111 HELP_ROLLBACK, 112 HELP_SEND, 113 HELP_SET, 114 HELP_SHARE, 115 HELP_SNAPSHOT, 116 HELP_UNMOUNT, 117 HELP_UNSHARE, 118 HELP_ALLOW, 119 HELP_UNALLOW 120 } zfs_help_t; 121 122 typedef struct zfs_command { 123 const char *name; 124 int (*func)(int argc, char **argv); 125 zfs_help_t usage; 126 } zfs_command_t; 127 128 /* 129 * Master command table. Each ZFS command has a name, associated function, and 130 * usage message. The usage messages need to be internationalized, so we have 131 * to have a function to return the usage message based on a command index. 132 * 133 * These commands are organized according to how they are displayed in the usage 134 * message. An empty command (one with a NULL name) indicates an empty line in 135 * the generic usage message. 136 */ 137 static zfs_command_t command_table[] = { 138 { "create", zfs_do_create, HELP_CREATE }, 139 { "destroy", zfs_do_destroy, HELP_DESTROY }, 140 { NULL }, 141 { "snapshot", zfs_do_snapshot, HELP_SNAPSHOT }, 142 { "rollback", zfs_do_rollback, HELP_ROLLBACK }, 143 { "clone", zfs_do_clone, HELP_CLONE }, 144 { "promote", zfs_do_promote, HELP_PROMOTE }, 145 { "rename", zfs_do_rename, HELP_RENAME }, 146 { NULL }, 147 { "list", zfs_do_list, HELP_LIST }, 148 { NULL }, 149 { "set", zfs_do_set, HELP_SET }, 150 { "get", zfs_do_get, HELP_GET }, 151 { "inherit", zfs_do_inherit, HELP_INHERIT }, 152 { "upgrade", zfs_do_upgrade, HELP_UPGRADE }, 153 { NULL }, 154 { "mount", zfs_do_mount, HELP_MOUNT }, 155 { "unmount", zfs_do_unmount, HELP_UNMOUNT }, 156 { "share", zfs_do_share, HELP_SHARE }, 157 { "unshare", zfs_do_unshare, HELP_UNSHARE }, 158 { NULL }, 159 { "send", zfs_do_send, HELP_SEND }, 160 { "receive", zfs_do_receive, HELP_RECEIVE }, 161 { NULL }, 162 { "allow", zfs_do_allow, HELP_ALLOW }, 163 { NULL }, 164 { "unallow", zfs_do_unallow, HELP_UNALLOW }, 165 }; 166 167 #define NCOMMAND (sizeof (command_table) / sizeof (command_table[0])) 168 169 zfs_command_t *current_command; 170 171 static const char * 172 get_usage(zfs_help_t idx) 173 { 174 switch (idx) { 175 case HELP_CLONE: 176 return (gettext("\tclone [-p] [-o property=value] ... " 177 "<snapshot> <filesystem|volume>\n")); 178 case HELP_CREATE: 179 return (gettext("\tcreate [-p] [-o property=value] ... " 180 "<filesystem>\n" 181 "\tcreate [-ps] [-b blocksize] [-o property=value] ... " 182 "-V <size> <volume>\n")); 183 case HELP_DESTROY: 184 return (gettext("\tdestroy [-rRf] " 185 "<filesystem|volume|snapshot>\n")); 186 case HELP_GET: 187 return (gettext("\tget [-rHp] [-o field[,...]] " 188 "[-s source[,...]]\n" 189 "\t <\"all\" | property[,...]> " 190 "[filesystem|volume|snapshot] ...\n")); 191 case HELP_INHERIT: 192 return (gettext("\tinherit [-r] <property> " 193 "<filesystem|volume|snapshot> ...\n")); 194 case HELP_UPGRADE: 195 return (gettext("\tupgrade [-v]\n" 196 "\tupgrade [-r] [-V version] <-a | filesystem ...>\n")); 197 case HELP_LIST: 198 return (gettext("\tlist [-rH] [-o property[,...]] " 199 "[-t type[,...]] [-s property] ...\n" 200 "\t [-S property] ... " 201 "[filesystem|volume|snapshot] ...\n")); 202 case HELP_MOUNT: 203 return (gettext("\tmount\n" 204 "\tmount [-vO] [-o opts] <-a | filesystem>\n")); 205 case HELP_PROMOTE: 206 return (gettext("\tpromote <clone-filesystem>\n")); 207 case HELP_RECEIVE: 208 return (gettext("\treceive [-vnF] <filesystem|volume|" 209 "snapshot>\n" 210 "\treceive [-vnF] -d <filesystem>\n")); 211 case HELP_RENAME: 212 return (gettext("\trename <filesystem|volume|snapshot> " 213 "<filesystem|volume|snapshot>\n" 214 "\trename -p <filesystem|volume> <filesystem|volume>\n" 215 "\trename -r <snapshot> <snapshot>")); 216 case HELP_ROLLBACK: 217 return (gettext("\trollback [-rRf] <snapshot>\n")); 218 case HELP_SEND: 219 return (gettext("\tsend [-R] [-[iI] snapshot] <snapshot>\n")); 220 case HELP_SET: 221 return (gettext("\tset <property=value> " 222 "<filesystem|volume|snapshot> ...\n")); 223 case HELP_SHARE: 224 return (gettext("\tshare <-a | filesystem>\n")); 225 case HELP_SNAPSHOT: 226 return (gettext("\tsnapshot [-r] [-o property=value] ... " 227 "<filesystem@snapname|volume@snapname>\n")); 228 case HELP_UNMOUNT: 229 return (gettext("\tunmount [-f] " 230 "<-a | filesystem|mountpoint>\n")); 231 case HELP_UNSHARE: 232 return (gettext("\tunshare [-f] " 233 "<-a | filesystem|mountpoint>\n")); 234 case HELP_ALLOW: 235 return (gettext("\tallow [-ldug] " 236 "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n" 237 "\t <filesystem|volume>\n" 238 "\tallow [-ld] -e <perm|@setname>[,...] " 239 "<filesystem|volume>\n" 240 "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n" 241 "\tallow -s @setname <perm|@setname>[,...] " 242 "<filesystem|volume>\n")); 243 case HELP_UNALLOW: 244 return (gettext("\tunallow [-rldug] " 245 "<\"everyone\"|user|group>[,...]\n" 246 "\t [<perm|@setname>[,...]] <filesystem|volume>\n" 247 "\tunallow [-rld] -e [<perm|@setname>[,...]] " 248 "<filesystem|volume>\n" 249 "\tunallow [-r] -c [<perm|@setname>[,...]] " 250 "<filesystem|volume>\n" 251 "\tunallow [-r] -s @setname [<perm|@setname>[,...]] " 252 "<filesystem|volume>\n")); 253 } 254 255 abort(); 256 /* NOTREACHED */ 257 } 258 259 /* 260 * Utility function to guarantee malloc() success. 261 */ 262 void * 263 safe_malloc(size_t size) 264 { 265 void *data; 266 267 if ((data = calloc(1, size)) == NULL) { 268 (void) fprintf(stderr, "internal error: out of memory\n"); 269 exit(1); 270 } 271 272 return (data); 273 } 274 275 /* 276 * Callback routine that will print out information for each of 277 * the properties. 278 */ 279 static int 280 usage_prop_cb(int prop, void *cb) 281 { 282 FILE *fp = cb; 283 284 (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop)); 285 286 if (zfs_prop_readonly(prop)) 287 (void) fprintf(fp, " NO "); 288 else 289 (void) fprintf(fp, "YES "); 290 291 if (zfs_prop_inheritable(prop)) 292 (void) fprintf(fp, " YES "); 293 else 294 (void) fprintf(fp, " NO "); 295 296 if (zfs_prop_values(prop) == NULL) 297 (void) fprintf(fp, "-\n"); 298 else 299 (void) fprintf(fp, "%s\n", zfs_prop_values(prop)); 300 301 return (ZPROP_CONT); 302 } 303 304 /* 305 * Display usage message. If we're inside a command, display only the usage for 306 * that command. Otherwise, iterate over the entire command table and display 307 * a complete usage message. 308 */ 309 static void 310 usage(boolean_t requested) 311 { 312 int i; 313 boolean_t show_properties = B_FALSE; 314 boolean_t show_permissions = B_FALSE; 315 FILE *fp = requested ? stdout : stderr; 316 317 if (current_command == NULL) { 318 319 (void) fprintf(fp, gettext("usage: zfs command args ...\n")); 320 (void) fprintf(fp, 321 gettext("where 'command' is one of the following:\n\n")); 322 323 for (i = 0; i < NCOMMAND; i++) { 324 if (command_table[i].name == NULL) 325 (void) fprintf(fp, "\n"); 326 else 327 (void) fprintf(fp, "%s", 328 get_usage(command_table[i].usage)); 329 } 330 331 (void) fprintf(fp, gettext("\nEach dataset is of the form: " 332 "pool/[dataset/]*dataset[@name]\n")); 333 } else { 334 (void) fprintf(fp, gettext("usage:\n")); 335 (void) fprintf(fp, "%s", get_usage(current_command->usage)); 336 } 337 338 if (current_command != NULL && 339 (strcmp(current_command->name, "set") == 0 || 340 strcmp(current_command->name, "get") == 0 || 341 strcmp(current_command->name, "inherit") == 0 || 342 strcmp(current_command->name, "list") == 0)) 343 show_properties = B_TRUE; 344 345 if (current_command != NULL && 346 (strcmp(current_command->name, "allow") == 0 || 347 strcmp(current_command->name, "unallow") == 0)) 348 show_permissions = B_TRUE; 349 350 if (show_properties) { 351 352 (void) fprintf(fp, 353 gettext("\nThe following properties are supported:\n")); 354 355 (void) fprintf(fp, "\n\t%-14s %s %s %s\n\n", 356 "PROPERTY", "EDIT", "INHERIT", "VALUES"); 357 358 /* Iterate over all properties */ 359 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE, 360 ZFS_TYPE_DATASET); 361 362 (void) fprintf(fp, gettext("\nSizes are specified in bytes " 363 "with standard units such as K, M, G, etc.\n")); 364 (void) fprintf(fp, gettext("\nUser-defined properties can " 365 "be specified by using a name containing a colon (:).\n")); 366 367 } else if (show_permissions) { 368 (void) fprintf(fp, 369 gettext("\nThe following permissions are supported:\n")); 370 371 zfs_deleg_permissions(); 372 } else { 373 /* 374 * TRANSLATION NOTE: 375 * "zfs set|get" must not be localised this is the 376 * command name and arguments. 377 */ 378 379 (void) fprintf(fp, 380 gettext("\nFor the property list, run: zfs set|get\n")); 381 382 (void) fprintf(fp, 383 gettext("\nFor the delegated permission list, run:" 384 " zfs allow|unallow\n")); 385 } 386 387 /* 388 * See comments at end of main(). 389 */ 390 if (getenv("ZFS_ABORT") != NULL) { 391 (void) printf("dumping core by request\n"); 392 abort(); 393 } 394 395 exit(requested ? 0 : 2); 396 } 397 398 static int 399 parseprop(nvlist_t *props) 400 { 401 char *propname = optarg; 402 char *propval, *strval; 403 404 if ((propval = strchr(propname, '=')) == NULL) { 405 (void) fprintf(stderr, gettext("missing " 406 "'=' for -o option\n")); 407 return (-1); 408 } 409 *propval = '\0'; 410 propval++; 411 if (nvlist_lookup_string(props, propname, &strval) == 0) { 412 (void) fprintf(stderr, gettext("property '%s' " 413 "specified multiple times\n"), propname); 414 return (-1); 415 } 416 if (nvlist_add_string(props, propname, propval) != 0) { 417 (void) fprintf(stderr, gettext("internal " 418 "error: out of memory\n")); 419 return (-1); 420 } 421 return (0); 422 423 } 424 425 /* 426 * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol> 427 * 428 * Given an existing dataset, create a writable copy whose initial contents 429 * are the same as the source. The newly created dataset maintains a 430 * dependency on the original; the original cannot be destroyed so long as 431 * the clone exists. 432 * 433 * The '-p' flag creates all the non-existing ancestors of the target first. 434 */ 435 static int 436 zfs_do_clone(int argc, char **argv) 437 { 438 zfs_handle_t *zhp = NULL; 439 boolean_t parents = B_FALSE; 440 nvlist_t *props; 441 int ret; 442 int c; 443 444 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 445 (void) fprintf(stderr, gettext("internal error: " 446 "out of memory\n")); 447 return (1); 448 } 449 450 /* check options */ 451 while ((c = getopt(argc, argv, "o:p")) != -1) { 452 switch (c) { 453 case 'o': 454 if (parseprop(props)) 455 return (1); 456 break; 457 case 'p': 458 parents = B_TRUE; 459 break; 460 case '?': 461 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 462 optopt); 463 goto usage; 464 } 465 } 466 467 argc -= optind; 468 argv += optind; 469 470 /* check number of arguments */ 471 if (argc < 1) { 472 (void) fprintf(stderr, gettext("missing source dataset " 473 "argument\n")); 474 goto usage; 475 } 476 if (argc < 2) { 477 (void) fprintf(stderr, gettext("missing target dataset " 478 "argument\n")); 479 goto usage; 480 } 481 if (argc > 2) { 482 (void) fprintf(stderr, gettext("too many arguments\n")); 483 goto usage; 484 } 485 486 /* open the source dataset */ 487 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 488 return (1); 489 490 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM | 491 ZFS_TYPE_VOLUME)) { 492 /* 493 * Now create the ancestors of the target dataset. If the 494 * target already exists and '-p' option was used we should not 495 * complain. 496 */ 497 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | 498 ZFS_TYPE_VOLUME)) 499 return (0); 500 if (zfs_create_ancestors(g_zfs, argv[1]) != 0) 501 return (1); 502 } 503 504 /* pass to libzfs */ 505 ret = zfs_clone(zhp, argv[1], props); 506 507 /* create the mountpoint if necessary */ 508 if (ret == 0) { 509 zfs_handle_t *clone; 510 511 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET); 512 if (clone != NULL) { 513 if ((ret = zfs_mount(clone, NULL, 0)) == 0) 514 ret = zfs_share(clone); 515 zfs_close(clone); 516 } 517 } 518 519 zfs_close(zhp); 520 nvlist_free(props); 521 522 return (!!ret); 523 524 usage: 525 if (zhp) 526 zfs_close(zhp); 527 nvlist_free(props); 528 usage(B_FALSE); 529 return (-1); 530 } 531 532 /* 533 * zfs create [-p] [-o prop=value] ... fs 534 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size 535 * 536 * Create a new dataset. This command can be used to create filesystems 537 * and volumes. Snapshot creation is handled by 'zfs snapshot'. 538 * For volumes, the user must specify a size to be used. 539 * 540 * The '-s' flag applies only to volumes, and indicates that we should not try 541 * to set the reservation for this volume. By default we set a reservation 542 * equal to the size for any volume. For pools with SPA_VERSION >= 543 * SPA_VERSION_REFRESERVATION, we set a refreservation instead. 544 * 545 * The '-p' flag creates all the non-existing ancestors of the target first. 546 */ 547 static int 548 zfs_do_create(int argc, char **argv) 549 { 550 zfs_type_t type = ZFS_TYPE_FILESYSTEM; 551 zfs_handle_t *zhp = NULL; 552 uint64_t volsize; 553 int c; 554 boolean_t noreserve = B_FALSE; 555 boolean_t bflag = B_FALSE; 556 boolean_t parents = B_FALSE; 557 int ret = 1; 558 nvlist_t *props; 559 uint64_t intval; 560 int canmount; 561 562 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 563 (void) fprintf(stderr, gettext("internal error: " 564 "out of memory\n")); 565 return (1); 566 } 567 568 /* check options */ 569 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) { 570 switch (c) { 571 case 'V': 572 type = ZFS_TYPE_VOLUME; 573 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 574 (void) fprintf(stderr, gettext("bad volume " 575 "size '%s': %s\n"), optarg, 576 libzfs_error_description(g_zfs)); 577 goto error; 578 } 579 580 if (nvlist_add_uint64(props, 581 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 582 intval) != 0) { 583 (void) fprintf(stderr, gettext("internal " 584 "error: out of memory\n")); 585 goto error; 586 } 587 volsize = intval; 588 break; 589 case 'p': 590 parents = B_TRUE; 591 break; 592 case 'b': 593 bflag = B_TRUE; 594 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 595 (void) fprintf(stderr, gettext("bad volume " 596 "block size '%s': %s\n"), optarg, 597 libzfs_error_description(g_zfs)); 598 goto error; 599 } 600 601 if (nvlist_add_uint64(props, 602 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 603 intval) != 0) { 604 (void) fprintf(stderr, gettext("internal " 605 "error: out of memory\n")); 606 goto error; 607 } 608 break; 609 case 'o': 610 if (parseprop(props)) 611 goto error; 612 break; 613 case 's': 614 noreserve = B_TRUE; 615 break; 616 case ':': 617 (void) fprintf(stderr, gettext("missing size " 618 "argument\n")); 619 goto badusage; 620 break; 621 case '?': 622 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 623 optopt); 624 goto badusage; 625 } 626 } 627 628 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) { 629 (void) fprintf(stderr, gettext("'-s' and '-b' can only be " 630 "used when creating a volume\n")); 631 goto badusage; 632 } 633 634 argc -= optind; 635 argv += optind; 636 637 /* check number of arguments */ 638 if (argc == 0) { 639 (void) fprintf(stderr, gettext("missing %s argument\n"), 640 zfs_type_to_name(type)); 641 goto badusage; 642 } 643 if (argc > 1) { 644 (void) fprintf(stderr, gettext("too many arguments\n")); 645 goto badusage; 646 } 647 648 if (type == ZFS_TYPE_VOLUME && !noreserve) { 649 zpool_handle_t *zpool_handle; 650 uint64_t spa_version; 651 char *p; 652 zfs_prop_t resv_prop; 653 char *strval; 654 655 if (p = strchr(argv[0], '/')) 656 *p = '\0'; 657 zpool_handle = zpool_open(g_zfs, argv[0]); 658 if (p != NULL) 659 *p = '/'; 660 if (zpool_handle == NULL) 661 goto error; 662 spa_version = zpool_get_prop_int(zpool_handle, 663 ZPOOL_PROP_VERSION, NULL); 664 zpool_close(zpool_handle); 665 if (spa_version >= SPA_VERSION_REFRESERVATION) 666 resv_prop = ZFS_PROP_REFRESERVATION; 667 else 668 resv_prop = ZFS_PROP_RESERVATION; 669 670 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop), 671 &strval) != 0) { 672 if (nvlist_add_uint64(props, 673 zfs_prop_to_name(resv_prop), volsize) != 0) { 674 (void) fprintf(stderr, gettext("internal " 675 "error: out of memory\n")); 676 nvlist_free(props); 677 return (1); 678 } 679 } 680 } 681 682 if (parents && zfs_name_valid(argv[0], type)) { 683 /* 684 * Now create the ancestors of target dataset. If the target 685 * already exists and '-p' option was used we should not 686 * complain. 687 */ 688 if (zfs_dataset_exists(g_zfs, argv[0], type)) { 689 ret = 0; 690 goto error; 691 } 692 if (zfs_create_ancestors(g_zfs, argv[0]) != 0) 693 goto error; 694 } 695 696 /* pass to libzfs */ 697 if (zfs_create(g_zfs, argv[0], type, props) != 0) 698 goto error; 699 700 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 701 goto error; 702 /* 703 * if the user doesn't want the dataset automatically mounted, 704 * then skip the mount/share step 705 */ 706 707 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 708 709 /* 710 * Mount and/or share the new filesystem as appropriate. We provide a 711 * verbose error message to let the user know that their filesystem was 712 * in fact created, even if we failed to mount or share it. 713 */ 714 ret = 0; 715 if (canmount == ZFS_CANMOUNT_ON) { 716 if (zfs_mount(zhp, NULL, 0) != 0) { 717 (void) fprintf(stderr, gettext("filesystem " 718 "successfully created, but not mounted\n")); 719 ret = 1; 720 } else if (zfs_share(zhp) != 0) { 721 (void) fprintf(stderr, gettext("filesystem " 722 "successfully created, but not shared\n")); 723 ret = 1; 724 } 725 } 726 727 error: 728 if (zhp) 729 zfs_close(zhp); 730 nvlist_free(props); 731 return (ret); 732 badusage: 733 nvlist_free(props); 734 usage(B_FALSE); 735 return (2); 736 } 737 738 /* 739 * zfs destroy [-rf] <fs, snap, vol> 740 * 741 * -r Recursively destroy all children 742 * -R Recursively destroy all dependents, including clones 743 * -f Force unmounting of any dependents 744 * 745 * Destroys the given dataset. By default, it will unmount any filesystems, 746 * and refuse to destroy a dataset that has any dependents. A dependent can 747 * either be a child, or a clone of a child. 748 */ 749 typedef struct destroy_cbdata { 750 boolean_t cb_first; 751 int cb_force; 752 int cb_recurse; 753 int cb_error; 754 int cb_needforce; 755 int cb_doclones; 756 boolean_t cb_closezhp; 757 zfs_handle_t *cb_target; 758 char *cb_snapname; 759 } destroy_cbdata_t; 760 761 /* 762 * Check for any dependents based on the '-r' or '-R' flags. 763 */ 764 static int 765 destroy_check_dependent(zfs_handle_t *zhp, void *data) 766 { 767 destroy_cbdata_t *cbp = data; 768 const char *tname = zfs_get_name(cbp->cb_target); 769 const char *name = zfs_get_name(zhp); 770 771 if (strncmp(tname, name, strlen(tname)) == 0 && 772 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) { 773 /* 774 * This is a direct descendant, not a clone somewhere else in 775 * the hierarchy. 776 */ 777 if (cbp->cb_recurse) 778 goto out; 779 780 if (cbp->cb_first) { 781 (void) fprintf(stderr, gettext("cannot destroy '%s': " 782 "%s has children\n"), 783 zfs_get_name(cbp->cb_target), 784 zfs_type_to_name(zfs_get_type(cbp->cb_target))); 785 (void) fprintf(stderr, gettext("use '-r' to destroy " 786 "the following datasets:\n")); 787 cbp->cb_first = B_FALSE; 788 cbp->cb_error = 1; 789 } 790 791 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 792 } else { 793 /* 794 * This is a clone. We only want to report this if the '-r' 795 * wasn't specified, or the target is a snapshot. 796 */ 797 if (!cbp->cb_recurse && 798 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT) 799 goto out; 800 801 if (cbp->cb_first) { 802 (void) fprintf(stderr, gettext("cannot destroy '%s': " 803 "%s has dependent clones\n"), 804 zfs_get_name(cbp->cb_target), 805 zfs_type_to_name(zfs_get_type(cbp->cb_target))); 806 (void) fprintf(stderr, gettext("use '-R' to destroy " 807 "the following datasets:\n")); 808 cbp->cb_first = B_FALSE; 809 cbp->cb_error = 1; 810 } 811 812 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 813 } 814 815 out: 816 zfs_close(zhp); 817 return (0); 818 } 819 820 static int 821 destroy_callback(zfs_handle_t *zhp, void *data) 822 { 823 destroy_cbdata_t *cbp = data; 824 825 /* 826 * Ignore pools (which we've already flagged as an error before getting 827 * here. 828 */ 829 if (strchr(zfs_get_name(zhp), '/') == NULL && 830 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 831 zfs_close(zhp); 832 return (0); 833 } 834 835 /* 836 * Bail out on the first error. 837 */ 838 if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 || 839 zfs_destroy(zhp) != 0) { 840 zfs_close(zhp); 841 return (-1); 842 } 843 844 zfs_close(zhp); 845 return (0); 846 } 847 848 static int 849 destroy_snap_clones(zfs_handle_t *zhp, void *arg) 850 { 851 destroy_cbdata_t *cbp = arg; 852 char thissnap[MAXPATHLEN]; 853 zfs_handle_t *szhp; 854 boolean_t closezhp = cbp->cb_closezhp; 855 int rv; 856 857 (void) snprintf(thissnap, sizeof (thissnap), 858 "%s@%s", zfs_get_name(zhp), cbp->cb_snapname); 859 860 libzfs_print_on_error(g_zfs, B_FALSE); 861 szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT); 862 libzfs_print_on_error(g_zfs, B_TRUE); 863 if (szhp) { 864 /* 865 * Destroy any clones of this snapshot 866 */ 867 if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback, 868 cbp) != 0) { 869 zfs_close(szhp); 870 if (closezhp) 871 zfs_close(zhp); 872 return (-1); 873 } 874 zfs_close(szhp); 875 } 876 877 cbp->cb_closezhp = B_TRUE; 878 rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg); 879 if (closezhp) 880 zfs_close(zhp); 881 return (rv); 882 } 883 884 static int 885 zfs_do_destroy(int argc, char **argv) 886 { 887 destroy_cbdata_t cb = { 0 }; 888 int c; 889 zfs_handle_t *zhp; 890 char *cp; 891 892 /* check options */ 893 while ((c = getopt(argc, argv, "frR")) != -1) { 894 switch (c) { 895 case 'f': 896 cb.cb_force = 1; 897 break; 898 case 'r': 899 cb.cb_recurse = 1; 900 break; 901 case 'R': 902 cb.cb_recurse = 1; 903 cb.cb_doclones = 1; 904 break; 905 case '?': 906 default: 907 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 908 optopt); 909 usage(B_FALSE); 910 } 911 } 912 913 argc -= optind; 914 argv += optind; 915 916 /* check number of arguments */ 917 if (argc == 0) { 918 (void) fprintf(stderr, gettext("missing path argument\n")); 919 usage(B_FALSE); 920 } 921 if (argc > 1) { 922 (void) fprintf(stderr, gettext("too many arguments\n")); 923 usage(B_FALSE); 924 } 925 926 /* 927 * If we are doing recursive destroy of a snapshot, then the 928 * named snapshot may not exist. Go straight to libzfs. 929 */ 930 if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) { 931 int ret; 932 933 *cp = '\0'; 934 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 935 return (1); 936 *cp = '@'; 937 cp++; 938 939 if (cb.cb_doclones) { 940 cb.cb_snapname = cp; 941 if (destroy_snap_clones(zhp, &cb) != 0) { 942 zfs_close(zhp); 943 return (1); 944 } 945 } 946 947 ret = zfs_destroy_snaps(zhp, cp); 948 zfs_close(zhp); 949 if (ret) { 950 (void) fprintf(stderr, 951 gettext("no snapshots destroyed\n")); 952 } 953 return (ret != 0); 954 } 955 956 957 /* Open the given dataset */ 958 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 959 return (1); 960 961 cb.cb_target = zhp; 962 963 /* 964 * Perform an explicit check for pools before going any further. 965 */ 966 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL && 967 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 968 (void) fprintf(stderr, gettext("cannot destroy '%s': " 969 "operation does not apply to pools\n"), 970 zfs_get_name(zhp)); 971 (void) fprintf(stderr, gettext("use 'zfs destroy -r " 972 "%s' to destroy all datasets in the pool\n"), 973 zfs_get_name(zhp)); 974 (void) fprintf(stderr, gettext("use 'zpool destroy %s' " 975 "to destroy the pool itself\n"), zfs_get_name(zhp)); 976 zfs_close(zhp); 977 return (1); 978 } 979 980 /* 981 * Check for any dependents and/or clones. 982 */ 983 cb.cb_first = B_TRUE; 984 if (!cb.cb_doclones && 985 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent, 986 &cb) != 0) { 987 zfs_close(zhp); 988 return (1); 989 } 990 991 if (cb.cb_error || 992 zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0) { 993 zfs_close(zhp); 994 return (1); 995 } 996 997 /* 998 * Do the real thing. The callback will close the handle regardless of 999 * whether it succeeds or not. 1000 */ 1001 1002 if (destroy_callback(zhp, &cb) != 0) 1003 return (1); 1004 1005 1006 return (0); 1007 } 1008 1009 /* 1010 * zfs get [-rHp] [-o field[,field]...] [-s source[,source]...] 1011 * < all | property[,property]... > < fs | snap | vol > ... 1012 * 1013 * -r recurse over any child datasets 1014 * -H scripted mode. Headers are stripped, and fields are separated 1015 * by tabs instead of spaces. 1016 * -o Set of fields to display. One of "name,property,value,source". 1017 * Default is all four. 1018 * -s Set of sources to allow. One of 1019 * "local,default,inherited,temporary,none". Default is all 1020 * five. 1021 * -p Display values in parsable (literal) format. 1022 * 1023 * Prints properties for the given datasets. The user can control which 1024 * columns to display as well as which property types to allow. 1025 */ 1026 1027 /* 1028 * Invoked to display the properties for a single dataset. 1029 */ 1030 static int 1031 get_callback(zfs_handle_t *zhp, void *data) 1032 { 1033 char buf[ZFS_MAXPROPLEN]; 1034 zprop_source_t sourcetype; 1035 char source[ZFS_MAXNAMELEN]; 1036 zprop_get_cbdata_t *cbp = data; 1037 nvlist_t *userprop = zfs_get_user_props(zhp); 1038 zprop_list_t *pl = cbp->cb_proplist; 1039 nvlist_t *propval; 1040 char *strval; 1041 char *sourceval; 1042 1043 for (; pl != NULL; pl = pl->pl_next) { 1044 /* 1045 * Skip the special fake placeholder. This will also skip over 1046 * the name property when 'all' is specified. 1047 */ 1048 if (pl->pl_prop == ZFS_PROP_NAME && 1049 pl == cbp->cb_proplist) 1050 continue; 1051 1052 if (pl->pl_prop != ZPROP_INVAL) { 1053 if (zfs_prop_get(zhp, pl->pl_prop, buf, 1054 sizeof (buf), &sourcetype, source, 1055 sizeof (source), 1056 cbp->cb_literal) != 0) { 1057 if (pl->pl_all) 1058 continue; 1059 if (!zfs_prop_valid_for_type(pl->pl_prop, 1060 ZFS_TYPE_DATASET)) { 1061 (void) fprintf(stderr, 1062 gettext("No such property '%s'\n"), 1063 zfs_prop_to_name(pl->pl_prop)); 1064 continue; 1065 } 1066 sourcetype = ZPROP_SRC_NONE; 1067 (void) strlcpy(buf, "-", sizeof (buf)); 1068 } 1069 1070 zprop_print_one_property(zfs_get_name(zhp), cbp, 1071 zfs_prop_to_name(pl->pl_prop), 1072 buf, sourcetype, source); 1073 } else { 1074 if (nvlist_lookup_nvlist(userprop, 1075 pl->pl_user_prop, &propval) != 0) { 1076 if (pl->pl_all) 1077 continue; 1078 sourcetype = ZPROP_SRC_NONE; 1079 strval = "-"; 1080 } else { 1081 verify(nvlist_lookup_string(propval, 1082 ZPROP_VALUE, &strval) == 0); 1083 verify(nvlist_lookup_string(propval, 1084 ZPROP_SOURCE, &sourceval) == 0); 1085 1086 if (strcmp(sourceval, 1087 zfs_get_name(zhp)) == 0) { 1088 sourcetype = ZPROP_SRC_LOCAL; 1089 } else { 1090 sourcetype = ZPROP_SRC_INHERITED; 1091 (void) strlcpy(source, 1092 sourceval, sizeof (source)); 1093 } 1094 } 1095 1096 zprop_print_one_property(zfs_get_name(zhp), cbp, 1097 pl->pl_user_prop, strval, sourcetype, 1098 source); 1099 } 1100 } 1101 1102 return (0); 1103 } 1104 1105 static int 1106 zfs_do_get(int argc, char **argv) 1107 { 1108 zprop_get_cbdata_t cb = { 0 }; 1109 boolean_t recurse = B_FALSE; 1110 int i, c; 1111 char *value, *fields; 1112 int ret; 1113 zprop_list_t fake_name = { 0 }; 1114 1115 /* 1116 * Set up default columns and sources. 1117 */ 1118 cb.cb_sources = ZPROP_SRC_ALL; 1119 cb.cb_columns[0] = GET_COL_NAME; 1120 cb.cb_columns[1] = GET_COL_PROPERTY; 1121 cb.cb_columns[2] = GET_COL_VALUE; 1122 cb.cb_columns[3] = GET_COL_SOURCE; 1123 cb.cb_type = ZFS_TYPE_DATASET; 1124 1125 /* check options */ 1126 while ((c = getopt(argc, argv, ":o:s:rHp")) != -1) { 1127 switch (c) { 1128 case 'p': 1129 cb.cb_literal = B_TRUE; 1130 break; 1131 case 'r': 1132 recurse = B_TRUE; 1133 break; 1134 case 'H': 1135 cb.cb_scripted = B_TRUE; 1136 break; 1137 case ':': 1138 (void) fprintf(stderr, gettext("missing argument for " 1139 "'%c' option\n"), optopt); 1140 usage(B_FALSE); 1141 break; 1142 case 'o': 1143 /* 1144 * Process the set of columns to display. We zero out 1145 * the structure to give us a blank slate. 1146 */ 1147 bzero(&cb.cb_columns, sizeof (cb.cb_columns)); 1148 i = 0; 1149 while (*optarg != '\0') { 1150 static char *col_subopts[] = 1151 { "name", "property", "value", "source", 1152 NULL }; 1153 1154 if (i == 4) { 1155 (void) fprintf(stderr, gettext("too " 1156 "many fields given to -o " 1157 "option\n")); 1158 usage(B_FALSE); 1159 } 1160 1161 switch (getsubopt(&optarg, col_subopts, 1162 &value)) { 1163 case 0: 1164 cb.cb_columns[i++] = GET_COL_NAME; 1165 break; 1166 case 1: 1167 cb.cb_columns[i++] = GET_COL_PROPERTY; 1168 break; 1169 case 2: 1170 cb.cb_columns[i++] = GET_COL_VALUE; 1171 break; 1172 case 3: 1173 cb.cb_columns[i++] = GET_COL_SOURCE; 1174 break; 1175 default: 1176 (void) fprintf(stderr, 1177 gettext("invalid column name " 1178 "'%s'\n"), value); 1179 usage(B_FALSE); 1180 } 1181 } 1182 break; 1183 1184 case 's': 1185 cb.cb_sources = 0; 1186 while (*optarg != '\0') { 1187 static char *source_subopts[] = { 1188 "local", "default", "inherited", 1189 "temporary", "none", NULL }; 1190 1191 switch (getsubopt(&optarg, source_subopts, 1192 &value)) { 1193 case 0: 1194 cb.cb_sources |= ZPROP_SRC_LOCAL; 1195 break; 1196 case 1: 1197 cb.cb_sources |= ZPROP_SRC_DEFAULT; 1198 break; 1199 case 2: 1200 cb.cb_sources |= ZPROP_SRC_INHERITED; 1201 break; 1202 case 3: 1203 cb.cb_sources |= ZPROP_SRC_TEMPORARY; 1204 break; 1205 case 4: 1206 cb.cb_sources |= ZPROP_SRC_NONE; 1207 break; 1208 default: 1209 (void) fprintf(stderr, 1210 gettext("invalid source " 1211 "'%s'\n"), value); 1212 usage(B_FALSE); 1213 } 1214 } 1215 break; 1216 1217 case '?': 1218 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1219 optopt); 1220 usage(B_FALSE); 1221 } 1222 } 1223 1224 argc -= optind; 1225 argv += optind; 1226 1227 if (argc < 1) { 1228 (void) fprintf(stderr, gettext("missing property " 1229 "argument\n")); 1230 usage(B_FALSE); 1231 } 1232 1233 fields = argv[0]; 1234 1235 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1236 != 0) 1237 usage(B_FALSE); 1238 1239 argc--; 1240 argv++; 1241 1242 /* 1243 * As part of zfs_expand_proplist(), we keep track of the maximum column 1244 * width for each property. For the 'NAME' (and 'SOURCE') columns, we 1245 * need to know the maximum name length. However, the user likely did 1246 * not specify 'name' as one of the properties to fetch, so we need to 1247 * make sure we always include at least this property for 1248 * print_get_headers() to work properly. 1249 */ 1250 if (cb.cb_proplist != NULL) { 1251 fake_name.pl_prop = ZFS_PROP_NAME; 1252 fake_name.pl_width = strlen(gettext("NAME")); 1253 fake_name.pl_next = cb.cb_proplist; 1254 cb.cb_proplist = &fake_name; 1255 } 1256 1257 cb.cb_first = B_TRUE; 1258 1259 /* run for each object */ 1260 ret = zfs_for_each(argc, argv, recurse, ZFS_TYPE_DATASET, NULL, 1261 &cb.cb_proplist, get_callback, &cb, B_FALSE); 1262 1263 if (cb.cb_proplist == &fake_name) 1264 zprop_free_list(fake_name.pl_next); 1265 else 1266 zprop_free_list(cb.cb_proplist); 1267 1268 return (ret); 1269 } 1270 1271 /* 1272 * inherit [-r] <property> <fs|vol> ... 1273 * 1274 * -r Recurse over all children 1275 * 1276 * For each dataset specified on the command line, inherit the given property 1277 * from its parent. Inheriting a property at the pool level will cause it to 1278 * use the default value. The '-r' flag will recurse over all children, and is 1279 * useful for setting a property on a hierarchy-wide basis, regardless of any 1280 * local modifications for each dataset. 1281 */ 1282 1283 static int 1284 inherit_recurse_cb(zfs_handle_t *zhp, void *data) 1285 { 1286 char *propname = data; 1287 zfs_prop_t prop = zfs_name_to_prop(propname); 1288 1289 /* 1290 * If we're doing it recursively, then ignore properties that 1291 * are not valid for this type of dataset. 1292 */ 1293 if (prop != ZPROP_INVAL && 1294 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp))) 1295 return (0); 1296 1297 return (zfs_prop_inherit(zhp, propname) != 0); 1298 } 1299 1300 static int 1301 inherit_cb(zfs_handle_t *zhp, void *data) 1302 { 1303 char *propname = data; 1304 1305 return (zfs_prop_inherit(zhp, propname) != 0); 1306 } 1307 1308 static int 1309 zfs_do_inherit(int argc, char **argv) 1310 { 1311 boolean_t recurse = B_FALSE; 1312 int c; 1313 zfs_prop_t prop; 1314 char *propname; 1315 int ret; 1316 1317 /* check options */ 1318 while ((c = getopt(argc, argv, "r")) != -1) { 1319 switch (c) { 1320 case 'r': 1321 recurse = B_TRUE; 1322 break; 1323 case '?': 1324 default: 1325 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1326 optopt); 1327 usage(B_FALSE); 1328 } 1329 } 1330 1331 argc -= optind; 1332 argv += optind; 1333 1334 /* check number of arguments */ 1335 if (argc < 1) { 1336 (void) fprintf(stderr, gettext("missing property argument\n")); 1337 usage(B_FALSE); 1338 } 1339 if (argc < 2) { 1340 (void) fprintf(stderr, gettext("missing dataset argument\n")); 1341 usage(B_FALSE); 1342 } 1343 1344 propname = argv[0]; 1345 argc--; 1346 argv++; 1347 1348 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) { 1349 if (zfs_prop_readonly(prop)) { 1350 (void) fprintf(stderr, gettext( 1351 "%s property is read-only\n"), 1352 propname); 1353 return (1); 1354 } 1355 if (!zfs_prop_inheritable(prop)) { 1356 (void) fprintf(stderr, gettext("'%s' property cannot " 1357 "be inherited\n"), propname); 1358 if (prop == ZFS_PROP_QUOTA || 1359 prop == ZFS_PROP_RESERVATION || 1360 prop == ZFS_PROP_REFQUOTA || 1361 prop == ZFS_PROP_REFRESERVATION) 1362 (void) fprintf(stderr, gettext("use 'zfs set " 1363 "%s=none' to clear\n"), propname); 1364 return (1); 1365 } 1366 } else if (!zfs_prop_user(propname)) { 1367 (void) fprintf(stderr, gettext("invalid property '%s'\n"), 1368 propname); 1369 usage(B_FALSE); 1370 } 1371 1372 if (recurse) { 1373 ret = zfs_for_each(argc, argv, recurse, ZFS_TYPE_DATASET, 1374 NULL, NULL, inherit_recurse_cb, propname, B_FALSE); 1375 } else { 1376 ret = zfs_for_each(argc, argv, recurse, ZFS_TYPE_DATASET, 1377 NULL, NULL, inherit_cb, propname, B_FALSE); 1378 } 1379 1380 return (ret); 1381 } 1382 1383 typedef struct upgrade_cbdata { 1384 uint64_t cb_numupgraded; 1385 uint64_t cb_numsamegraded; 1386 uint64_t cb_numfailed; 1387 uint64_t cb_version; 1388 boolean_t cb_newer; 1389 boolean_t cb_foundone; 1390 char cb_lastfs[ZFS_MAXNAMELEN]; 1391 } upgrade_cbdata_t; 1392 1393 static int 1394 same_pool(zfs_handle_t *zhp, const char *name) 1395 { 1396 int len1 = strcspn(name, "/@"); 1397 const char *zhname = zfs_get_name(zhp); 1398 int len2 = strcspn(zhname, "/@"); 1399 1400 if (len1 != len2) 1401 return (B_FALSE); 1402 return (strncmp(name, zhname, len1) == 0); 1403 } 1404 1405 static int 1406 upgrade_list_callback(zfs_handle_t *zhp, void *data) 1407 { 1408 upgrade_cbdata_t *cb = data; 1409 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1410 1411 /* list if it's old/new */ 1412 if ((!cb->cb_newer && version < ZPL_VERSION) || 1413 (cb->cb_newer && version > ZPL_VERSION)) { 1414 char *str; 1415 if (cb->cb_newer) { 1416 str = gettext("The following filesystems are " 1417 "formatted using a newer software version and\n" 1418 "cannot be accessed on the current system.\n\n"); 1419 } else { 1420 str = gettext("The following filesystems are " 1421 "out of date, and can be upgraded. After being\n" 1422 "upgraded, these filesystems (and any 'zfs send' " 1423 "streams generated from\n" 1424 "subsequent snapshots) will no longer be " 1425 "accessible by older software versions.\n\n"); 1426 } 1427 1428 if (!cb->cb_foundone) { 1429 (void) puts(str); 1430 (void) printf(gettext("VER FILESYSTEM\n")); 1431 (void) printf(gettext("--- ------------\n")); 1432 cb->cb_foundone = B_TRUE; 1433 } 1434 1435 (void) printf("%2u %s\n", version, zfs_get_name(zhp)); 1436 } 1437 1438 return (0); 1439 } 1440 1441 static int 1442 upgrade_set_callback(zfs_handle_t *zhp, void *data) 1443 { 1444 upgrade_cbdata_t *cb = data; 1445 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1446 1447 if (cb->cb_version >= ZPL_VERSION_FUID) { 1448 int spa_version; 1449 1450 if (zfs_spa_version(zhp, &spa_version) < 0) 1451 return (-1); 1452 1453 if (spa_version < SPA_VERSION_FUID) { 1454 /* can't upgrade */ 1455 (void) printf(gettext("%s: can not be upgraded; " 1456 "the pool version needs to first be upgraded\nto " 1457 "version %d\n\n"), 1458 zfs_get_name(zhp), SPA_VERSION_FUID); 1459 cb->cb_numfailed++; 1460 return (0); 1461 } 1462 } 1463 1464 /* upgrade */ 1465 if (version < cb->cb_version) { 1466 char verstr[16]; 1467 (void) snprintf(verstr, sizeof (verstr), 1468 "%llu", cb->cb_version); 1469 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) { 1470 /* 1471 * If they did "zfs upgrade -a", then we could 1472 * be doing ioctls to different pools. We need 1473 * to log this history once to each pool. 1474 */ 1475 verify(zpool_stage_history(g_zfs, history_str) == 0); 1476 } 1477 if (zfs_prop_set(zhp, "version", verstr) == 0) 1478 cb->cb_numupgraded++; 1479 else 1480 cb->cb_numfailed++; 1481 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp)); 1482 } else if (version > cb->cb_version) { 1483 /* can't downgrade */ 1484 (void) printf(gettext("%s: can not be downgraded; " 1485 "it is already at version %u\n"), 1486 zfs_get_name(zhp), version); 1487 cb->cb_numfailed++; 1488 } else { 1489 cb->cb_numsamegraded++; 1490 } 1491 return (0); 1492 } 1493 1494 /* 1495 * zfs upgrade 1496 * zfs upgrade -v 1497 * zfs upgrade [-r] [-V <version>] <-a | filesystem> 1498 */ 1499 static int 1500 zfs_do_upgrade(int argc, char **argv) 1501 { 1502 boolean_t recurse = B_FALSE; 1503 boolean_t all = B_FALSE; 1504 boolean_t showversions = B_FALSE; 1505 int ret; 1506 upgrade_cbdata_t cb = { 0 }; 1507 char c; 1508 1509 /* check options */ 1510 while ((c = getopt(argc, argv, "rvV:a")) != -1) { 1511 switch (c) { 1512 case 'r': 1513 recurse = B_TRUE; 1514 break; 1515 case 'v': 1516 showversions = B_TRUE; 1517 break; 1518 case 'V': 1519 if (zfs_prop_string_to_index(ZFS_PROP_VERSION, 1520 optarg, &cb.cb_version) != 0) { 1521 (void) fprintf(stderr, 1522 gettext("invalid version %s\n"), optarg); 1523 usage(B_FALSE); 1524 } 1525 break; 1526 case 'a': 1527 all = B_TRUE; 1528 break; 1529 case '?': 1530 default: 1531 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1532 optopt); 1533 usage(B_FALSE); 1534 } 1535 } 1536 1537 argc -= optind; 1538 argv += optind; 1539 1540 if ((!all && !argc) && (recurse | cb.cb_version)) 1541 usage(B_FALSE); 1542 if (showversions && (recurse || all || cb.cb_version || argc)) 1543 usage(B_FALSE); 1544 if ((all || argc) && (showversions)) 1545 usage(B_FALSE); 1546 if (all && argc) 1547 usage(B_FALSE); 1548 1549 if (showversions) { 1550 /* Show info on available versions. */ 1551 (void) printf(gettext("The following filesystem versions are " 1552 "supported:\n\n")); 1553 (void) printf(gettext("VER DESCRIPTION\n")); 1554 (void) printf("--- -----------------------------------------" 1555 "---------------\n"); 1556 (void) printf(gettext(" 1 Initial ZFS filesystem version\n")); 1557 (void) printf(gettext(" 2 Enhanced directory entries\n")); 1558 (void) printf(gettext(" 3 Case insensitive and File system " 1559 "unique identifer (FUID)\n")); 1560 (void) printf(gettext("\nFor more information on a particular " 1561 "version, including supported releases, see:\n\n")); 1562 (void) printf("http://www.opensolaris.org/os/community/zfs/" 1563 "version/zpl/N\n\n"); 1564 (void) printf(gettext("Where 'N' is the version number.\n")); 1565 ret = 0; 1566 } else if (argc || all) { 1567 /* Upgrade filesystems */ 1568 if (cb.cb_version == 0) 1569 cb.cb_version = ZPL_VERSION; 1570 ret = zfs_for_each(argc, argv, recurse, ZFS_TYPE_FILESYSTEM, 1571 NULL, NULL, upgrade_set_callback, &cb, B_TRUE); 1572 (void) printf(gettext("%llu filesystems upgraded\n"), 1573 cb.cb_numupgraded); 1574 if (cb.cb_numsamegraded) { 1575 (void) printf(gettext("%llu filesystems already at " 1576 "this version\n"), 1577 cb.cb_numsamegraded); 1578 } 1579 if (cb.cb_numfailed != 0) 1580 ret = 1; 1581 } else { 1582 /* List old-version filesytems */ 1583 boolean_t found; 1584 (void) printf(gettext("This system is currently running " 1585 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION); 1586 1587 ret = zfs_for_each(0, NULL, B_TRUE, ZFS_TYPE_FILESYSTEM, 1588 NULL, NULL, upgrade_list_callback, &cb, B_TRUE); 1589 1590 found = cb.cb_foundone; 1591 cb.cb_foundone = B_FALSE; 1592 cb.cb_newer = B_TRUE; 1593 1594 ret = zfs_for_each(0, NULL, B_TRUE, ZFS_TYPE_FILESYSTEM, 1595 NULL, NULL, upgrade_list_callback, &cb, B_TRUE); 1596 1597 if (!cb.cb_foundone && !found) { 1598 (void) printf(gettext("All filesystems are " 1599 "formatted with the current version.\n")); 1600 } 1601 } 1602 1603 return (ret); 1604 } 1605 1606 /* 1607 * list [-rH] [-o property[,property]...] [-t type[,type]...] 1608 * [-s property [-s property]...] [-S property [-S property]...] 1609 * <dataset> ... 1610 * 1611 * -r Recurse over all children 1612 * -H Scripted mode; elide headers and separate columns by tabs 1613 * -o Control which fields to display. 1614 * -t Control which object types to display. 1615 * -s Specify sort columns, descending order. 1616 * -S Specify sort columns, ascending order. 1617 * 1618 * When given no arguments, lists all filesystems in the system. 1619 * Otherwise, list the specified datasets, optionally recursing down them if 1620 * '-r' is specified. 1621 */ 1622 typedef struct list_cbdata { 1623 boolean_t cb_first; 1624 boolean_t cb_scripted; 1625 zprop_list_t *cb_proplist; 1626 } list_cbdata_t; 1627 1628 /* 1629 * Given a list of columns to display, output appropriate headers for each one. 1630 */ 1631 static void 1632 print_header(zprop_list_t *pl) 1633 { 1634 char headerbuf[ZFS_MAXPROPLEN]; 1635 const char *header; 1636 int i; 1637 boolean_t first = B_TRUE; 1638 boolean_t right_justify; 1639 1640 for (; pl != NULL; pl = pl->pl_next) { 1641 if (!first) { 1642 (void) printf(" "); 1643 } else { 1644 first = B_FALSE; 1645 } 1646 1647 right_justify = B_FALSE; 1648 if (pl->pl_prop != ZPROP_INVAL) { 1649 header = zfs_prop_column_name(pl->pl_prop); 1650 right_justify = zfs_prop_align_right(pl->pl_prop); 1651 } else { 1652 for (i = 0; pl->pl_user_prop[i] != '\0'; i++) 1653 headerbuf[i] = toupper(pl->pl_user_prop[i]); 1654 headerbuf[i] = '\0'; 1655 header = headerbuf; 1656 } 1657 1658 if (pl->pl_next == NULL && !right_justify) 1659 (void) printf("%s", header); 1660 else if (right_justify) 1661 (void) printf("%*s", pl->pl_width, header); 1662 else 1663 (void) printf("%-*s", pl->pl_width, header); 1664 } 1665 1666 (void) printf("\n"); 1667 } 1668 1669 /* 1670 * Given a dataset and a list of fields, print out all the properties according 1671 * to the described layout. 1672 */ 1673 static void 1674 print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted) 1675 { 1676 boolean_t first = B_TRUE; 1677 char property[ZFS_MAXPROPLEN]; 1678 nvlist_t *userprops = zfs_get_user_props(zhp); 1679 nvlist_t *propval; 1680 char *propstr; 1681 boolean_t right_justify; 1682 int width; 1683 1684 for (; pl != NULL; pl = pl->pl_next) { 1685 if (!first) { 1686 if (scripted) 1687 (void) printf("\t"); 1688 else 1689 (void) printf(" "); 1690 } else { 1691 first = B_FALSE; 1692 } 1693 1694 right_justify = B_FALSE; 1695 if (pl->pl_prop != ZPROP_INVAL) { 1696 if (zfs_prop_get(zhp, pl->pl_prop, property, 1697 sizeof (property), NULL, NULL, 0, B_FALSE) != 0) 1698 propstr = "-"; 1699 else 1700 propstr = property; 1701 1702 right_justify = zfs_prop_align_right(pl->pl_prop); 1703 } else { 1704 if (nvlist_lookup_nvlist(userprops, 1705 pl->pl_user_prop, &propval) != 0) 1706 propstr = "-"; 1707 else 1708 verify(nvlist_lookup_string(propval, 1709 ZPROP_VALUE, &propstr) == 0); 1710 } 1711 1712 width = pl->pl_width; 1713 1714 /* 1715 * If this is being called in scripted mode, or if this is the 1716 * last column and it is left-justified, don't include a width 1717 * format specifier. 1718 */ 1719 if (scripted || (pl->pl_next == NULL && !right_justify)) 1720 (void) printf("%s", propstr); 1721 else if (right_justify) 1722 (void) printf("%*s", width, propstr); 1723 else 1724 (void) printf("%-*s", width, propstr); 1725 } 1726 1727 (void) printf("\n"); 1728 } 1729 1730 /* 1731 * Generic callback function to list a dataset or snapshot. 1732 */ 1733 static int 1734 list_callback(zfs_handle_t *zhp, void *data) 1735 { 1736 list_cbdata_t *cbp = data; 1737 1738 if (cbp->cb_first) { 1739 if (!cbp->cb_scripted) 1740 print_header(cbp->cb_proplist); 1741 cbp->cb_first = B_FALSE; 1742 } 1743 1744 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted); 1745 1746 return (0); 1747 } 1748 1749 static int 1750 zfs_do_list(int argc, char **argv) 1751 { 1752 int c; 1753 boolean_t recurse = B_FALSE; 1754 boolean_t scripted = B_FALSE; 1755 static char default_fields[] = 1756 "name,used,available,referenced,mountpoint"; 1757 int types = ZFS_TYPE_DATASET; 1758 char *fields = NULL; 1759 list_cbdata_t cb = { 0 }; 1760 char *value; 1761 int ret; 1762 char *type_subopts[] = { "filesystem", "volume", "snapshot", NULL }; 1763 zfs_sort_column_t *sortcol = NULL; 1764 boolean_t gottypes = B_FALSE; 1765 1766 /* check options */ 1767 while ((c = getopt(argc, argv, ":o:rt:Hs:S:")) != -1) { 1768 switch (c) { 1769 case 'o': 1770 fields = optarg; 1771 break; 1772 case 'r': 1773 recurse = B_TRUE; 1774 break; 1775 case 'H': 1776 scripted = B_TRUE; 1777 break; 1778 case 's': 1779 if (zfs_add_sort_column(&sortcol, optarg, 1780 B_FALSE) != 0) { 1781 (void) fprintf(stderr, 1782 gettext("invalid property '%s'\n"), optarg); 1783 usage(B_FALSE); 1784 } 1785 break; 1786 case 'S': 1787 if (zfs_add_sort_column(&sortcol, optarg, 1788 B_TRUE) != 0) { 1789 (void) fprintf(stderr, 1790 gettext("invalid property '%s'\n"), optarg); 1791 usage(B_FALSE); 1792 } 1793 break; 1794 case 't': 1795 gottypes = B_TRUE; 1796 types = 0; 1797 while (*optarg != '\0') { 1798 switch (getsubopt(&optarg, type_subopts, 1799 &value)) { 1800 case 0: 1801 types |= ZFS_TYPE_FILESYSTEM; 1802 break; 1803 case 1: 1804 types |= ZFS_TYPE_VOLUME; 1805 break; 1806 case 2: 1807 types |= ZFS_TYPE_SNAPSHOT; 1808 break; 1809 default: 1810 (void) fprintf(stderr, 1811 gettext("invalid type '%s'\n"), 1812 value); 1813 usage(B_FALSE); 1814 } 1815 } 1816 break; 1817 case ':': 1818 (void) fprintf(stderr, gettext("missing argument for " 1819 "'%c' option\n"), optopt); 1820 usage(B_FALSE); 1821 break; 1822 case '?': 1823 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1824 optopt); 1825 usage(B_FALSE); 1826 } 1827 } 1828 1829 argc -= optind; 1830 argv += optind; 1831 1832 if (fields == NULL) 1833 fields = default_fields; 1834 1835 /* 1836 * If they only specified "-o space" and no types, don't display 1837 * snapshots. 1838 */ 1839 if (strcmp(fields, "space") == 0 && !gottypes) 1840 types &= ~ZFS_TYPE_SNAPSHOT; 1841 1842 /* 1843 * If the user specifies '-o all', the zprop_get_list() doesn't 1844 * normally include the name of the dataset. For 'zfs list', we always 1845 * want this property to be first. 1846 */ 1847 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1848 != 0) 1849 usage(B_FALSE); 1850 1851 cb.cb_scripted = scripted; 1852 cb.cb_first = B_TRUE; 1853 1854 ret = zfs_for_each(argc, argv, recurse, types, sortcol, &cb.cb_proplist, 1855 list_callback, &cb, B_TRUE); 1856 1857 zprop_free_list(cb.cb_proplist); 1858 zfs_free_sort_columns(sortcol); 1859 1860 if (ret == 0 && cb.cb_first && !cb.cb_scripted) 1861 (void) printf(gettext("no datasets available\n")); 1862 1863 return (ret); 1864 } 1865 1866 /* 1867 * zfs rename <fs | snap | vol> <fs | snap | vol> 1868 * zfs rename -p <fs | vol> <fs | vol> 1869 * zfs rename -r <snap> <snap> 1870 * 1871 * Renames the given dataset to another of the same type. 1872 * 1873 * The '-p' flag creates all the non-existing ancestors of the target first. 1874 */ 1875 /* ARGSUSED */ 1876 static int 1877 zfs_do_rename(int argc, char **argv) 1878 { 1879 zfs_handle_t *zhp; 1880 int c; 1881 int ret; 1882 boolean_t recurse = B_FALSE; 1883 boolean_t parents = B_FALSE; 1884 1885 /* check options */ 1886 while ((c = getopt(argc, argv, "pr")) != -1) { 1887 switch (c) { 1888 case 'p': 1889 parents = B_TRUE; 1890 break; 1891 case 'r': 1892 recurse = B_TRUE; 1893 break; 1894 case '?': 1895 default: 1896 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1897 optopt); 1898 usage(B_FALSE); 1899 } 1900 } 1901 1902 argc -= optind; 1903 argv += optind; 1904 1905 /* check number of arguments */ 1906 if (argc < 1) { 1907 (void) fprintf(stderr, gettext("missing source dataset " 1908 "argument\n")); 1909 usage(B_FALSE); 1910 } 1911 if (argc < 2) { 1912 (void) fprintf(stderr, gettext("missing target dataset " 1913 "argument\n")); 1914 usage(B_FALSE); 1915 } 1916 if (argc > 2) { 1917 (void) fprintf(stderr, gettext("too many arguments\n")); 1918 usage(B_FALSE); 1919 } 1920 1921 if (recurse && parents) { 1922 (void) fprintf(stderr, gettext("-p and -r options are mutually " 1923 "exclusive\n")); 1924 usage(B_FALSE); 1925 } 1926 1927 if (recurse && strchr(argv[0], '@') == 0) { 1928 (void) fprintf(stderr, gettext("source dataset for recursive " 1929 "rename must be a snapshot\n")); 1930 usage(B_FALSE); 1931 } 1932 1933 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM | 1934 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL) 1935 return (1); 1936 1937 /* If we were asked and the name looks good, try to create ancestors. */ 1938 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) && 1939 zfs_create_ancestors(g_zfs, argv[1]) != 0) { 1940 zfs_close(zhp); 1941 return (1); 1942 } 1943 1944 ret = (zfs_rename(zhp, argv[1], recurse) != 0); 1945 1946 zfs_close(zhp); 1947 return (ret); 1948 } 1949 1950 /* 1951 * zfs promote <fs> 1952 * 1953 * Promotes the given clone fs to be the parent 1954 */ 1955 /* ARGSUSED */ 1956 static int 1957 zfs_do_promote(int argc, char **argv) 1958 { 1959 zfs_handle_t *zhp; 1960 int ret; 1961 1962 /* check options */ 1963 if (argc > 1 && argv[1][0] == '-') { 1964 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1965 argv[1][1]); 1966 usage(B_FALSE); 1967 } 1968 1969 /* check number of arguments */ 1970 if (argc < 2) { 1971 (void) fprintf(stderr, gettext("missing clone filesystem" 1972 " argument\n")); 1973 usage(B_FALSE); 1974 } 1975 if (argc > 2) { 1976 (void) fprintf(stderr, gettext("too many arguments\n")); 1977 usage(B_FALSE); 1978 } 1979 1980 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 1981 if (zhp == NULL) 1982 return (1); 1983 1984 ret = (zfs_promote(zhp) != 0); 1985 1986 1987 zfs_close(zhp); 1988 return (ret); 1989 } 1990 1991 /* 1992 * zfs rollback [-rRf] <snapshot> 1993 * 1994 * -r Delete any intervening snapshots before doing rollback 1995 * -R Delete any snapshots and their clones 1996 * -f ignored for backwards compatability 1997 * 1998 * Given a filesystem, rollback to a specific snapshot, discarding any changes 1999 * since then and making it the active dataset. If more recent snapshots exist, 2000 * the command will complain unless the '-r' flag is given. 2001 */ 2002 typedef struct rollback_cbdata { 2003 uint64_t cb_create; 2004 boolean_t cb_first; 2005 int cb_doclones; 2006 char *cb_target; 2007 int cb_error; 2008 boolean_t cb_recurse; 2009 boolean_t cb_dependent; 2010 } rollback_cbdata_t; 2011 2012 /* 2013 * Report any snapshots more recent than the one specified. Used when '-r' is 2014 * not specified. We reuse this same callback for the snapshot dependents - if 2015 * 'cb_dependent' is set, then this is a dependent and we should report it 2016 * without checking the transaction group. 2017 */ 2018 static int 2019 rollback_check(zfs_handle_t *zhp, void *data) 2020 { 2021 rollback_cbdata_t *cbp = data; 2022 2023 if (cbp->cb_doclones) { 2024 zfs_close(zhp); 2025 return (0); 2026 } 2027 2028 if (!cbp->cb_dependent) { 2029 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 && 2030 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && 2031 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > 2032 cbp->cb_create) { 2033 2034 if (cbp->cb_first && !cbp->cb_recurse) { 2035 (void) fprintf(stderr, gettext("cannot " 2036 "rollback to '%s': more recent snapshots " 2037 "exist\n"), 2038 cbp->cb_target); 2039 (void) fprintf(stderr, gettext("use '-r' to " 2040 "force deletion of the following " 2041 "snapshots:\n")); 2042 cbp->cb_first = 0; 2043 cbp->cb_error = 1; 2044 } 2045 2046 if (cbp->cb_recurse) { 2047 cbp->cb_dependent = B_TRUE; 2048 if (zfs_iter_dependents(zhp, B_TRUE, 2049 rollback_check, cbp) != 0) { 2050 zfs_close(zhp); 2051 return (-1); 2052 } 2053 cbp->cb_dependent = B_FALSE; 2054 } else { 2055 (void) fprintf(stderr, "%s\n", 2056 zfs_get_name(zhp)); 2057 } 2058 } 2059 } else { 2060 if (cbp->cb_first && cbp->cb_recurse) { 2061 (void) fprintf(stderr, gettext("cannot rollback to " 2062 "'%s': clones of previous snapshots exist\n"), 2063 cbp->cb_target); 2064 (void) fprintf(stderr, gettext("use '-R' to " 2065 "force deletion of the following clones and " 2066 "dependents:\n")); 2067 cbp->cb_first = 0; 2068 cbp->cb_error = 1; 2069 } 2070 2071 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 2072 } 2073 2074 zfs_close(zhp); 2075 return (0); 2076 } 2077 2078 static int 2079 zfs_do_rollback(int argc, char **argv) 2080 { 2081 int ret; 2082 int c; 2083 boolean_t force = B_FALSE; 2084 rollback_cbdata_t cb = { 0 }; 2085 zfs_handle_t *zhp, *snap; 2086 char parentname[ZFS_MAXNAMELEN]; 2087 char *delim; 2088 2089 /* check options */ 2090 while ((c = getopt(argc, argv, "rRf")) != -1) { 2091 switch (c) { 2092 case 'r': 2093 cb.cb_recurse = 1; 2094 break; 2095 case 'R': 2096 cb.cb_recurse = 1; 2097 cb.cb_doclones = 1; 2098 break; 2099 case 'f': 2100 force = B_TRUE; 2101 break; 2102 case '?': 2103 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2104 optopt); 2105 usage(B_FALSE); 2106 } 2107 } 2108 2109 argc -= optind; 2110 argv += optind; 2111 2112 /* check number of arguments */ 2113 if (argc < 1) { 2114 (void) fprintf(stderr, gettext("missing dataset argument\n")); 2115 usage(B_FALSE); 2116 } 2117 if (argc > 1) { 2118 (void) fprintf(stderr, gettext("too many arguments\n")); 2119 usage(B_FALSE); 2120 } 2121 2122 /* open the snapshot */ 2123 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 2124 return (1); 2125 2126 /* open the parent dataset */ 2127 (void) strlcpy(parentname, argv[0], sizeof (parentname)); 2128 verify((delim = strrchr(parentname, '@')) != NULL); 2129 *delim = '\0'; 2130 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) { 2131 zfs_close(snap); 2132 return (1); 2133 } 2134 2135 /* 2136 * Check for more recent snapshots and/or clones based on the presence 2137 * of '-r' and '-R'. 2138 */ 2139 cb.cb_target = argv[0]; 2140 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 2141 cb.cb_first = B_TRUE; 2142 cb.cb_error = 0; 2143 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0) 2144 goto out; 2145 2146 if ((ret = cb.cb_error) != 0) 2147 goto out; 2148 2149 /* 2150 * Rollback parent to the given snapshot. 2151 */ 2152 ret = zfs_rollback(zhp, snap, force); 2153 2154 out: 2155 zfs_close(snap); 2156 zfs_close(zhp); 2157 2158 if (ret == 0) 2159 return (0); 2160 else 2161 return (1); 2162 } 2163 2164 /* 2165 * zfs set property=value { fs | snap | vol } ... 2166 * 2167 * Sets the given property for all datasets specified on the command line. 2168 */ 2169 typedef struct set_cbdata { 2170 char *cb_propname; 2171 char *cb_value; 2172 } set_cbdata_t; 2173 2174 static int 2175 set_callback(zfs_handle_t *zhp, void *data) 2176 { 2177 set_cbdata_t *cbp = data; 2178 2179 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) { 2180 switch (libzfs_errno(g_zfs)) { 2181 case EZFS_MOUNTFAILED: 2182 (void) fprintf(stderr, gettext("property may be set " 2183 "but unable to remount filesystem\n")); 2184 break; 2185 case EZFS_SHARENFSFAILED: 2186 (void) fprintf(stderr, gettext("property may be set " 2187 "but unable to reshare filesystem\n")); 2188 break; 2189 } 2190 return (1); 2191 } 2192 return (0); 2193 } 2194 2195 static int 2196 zfs_do_set(int argc, char **argv) 2197 { 2198 set_cbdata_t cb; 2199 int ret; 2200 2201 /* check for options */ 2202 if (argc > 1 && argv[1][0] == '-') { 2203 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2204 argv[1][1]); 2205 usage(B_FALSE); 2206 } 2207 2208 /* check number of arguments */ 2209 if (argc < 2) { 2210 (void) fprintf(stderr, gettext("missing property=value " 2211 "argument\n")); 2212 usage(B_FALSE); 2213 } 2214 if (argc < 3) { 2215 (void) fprintf(stderr, gettext("missing dataset name\n")); 2216 usage(B_FALSE); 2217 } 2218 2219 /* validate property=value argument */ 2220 cb.cb_propname = argv[1]; 2221 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) || 2222 (cb.cb_value[1] == '\0')) { 2223 (void) fprintf(stderr, gettext("missing value in " 2224 "property=value argument\n")); 2225 usage(B_FALSE); 2226 } 2227 2228 *cb.cb_value = '\0'; 2229 cb.cb_value++; 2230 2231 if (*cb.cb_propname == '\0') { 2232 (void) fprintf(stderr, 2233 gettext("missing property in property=value argument\n")); 2234 usage(B_FALSE); 2235 } 2236 2237 ret = zfs_for_each(argc - 2, argv + 2, B_FALSE, 2238 ZFS_TYPE_DATASET, NULL, NULL, set_callback, &cb, B_FALSE); 2239 2240 return (ret); 2241 } 2242 2243 /* 2244 * zfs snapshot [-r] [-o prop=value] ... <fs@snap> 2245 * 2246 * Creates a snapshot with the given name. While functionally equivalent to 2247 * 'zfs create', it is a separate command to differentiate intent. 2248 */ 2249 static int 2250 zfs_do_snapshot(int argc, char **argv) 2251 { 2252 boolean_t recursive = B_FALSE; 2253 int ret; 2254 char c; 2255 nvlist_t *props; 2256 2257 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 2258 (void) fprintf(stderr, gettext("internal error: " 2259 "out of memory\n")); 2260 return (1); 2261 } 2262 2263 /* check options */ 2264 while ((c = getopt(argc, argv, "ro:")) != -1) { 2265 switch (c) { 2266 case 'o': 2267 if (parseprop(props)) 2268 return (1); 2269 break; 2270 case 'r': 2271 recursive = B_TRUE; 2272 break; 2273 case '?': 2274 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2275 optopt); 2276 goto usage; 2277 } 2278 } 2279 2280 argc -= optind; 2281 argv += optind; 2282 2283 /* check number of arguments */ 2284 if (argc < 1) { 2285 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2286 goto usage; 2287 } 2288 if (argc > 1) { 2289 (void) fprintf(stderr, gettext("too many arguments\n")); 2290 goto usage; 2291 } 2292 2293 ret = zfs_snapshot(g_zfs, argv[0], recursive, props); 2294 nvlist_free(props); 2295 if (ret && recursive) 2296 (void) fprintf(stderr, gettext("no snapshots were created\n")); 2297 return (ret != 0); 2298 2299 usage: 2300 nvlist_free(props); 2301 usage(B_FALSE); 2302 return (-1); 2303 } 2304 2305 /* 2306 * zfs send [-v] -R [-i|-I <@snap>] <fs@snap> 2307 * zfs send [-v] [-i|-I <@snap>] <fs@snap> 2308 * 2309 * Send a backup stream to stdout. 2310 */ 2311 static int 2312 zfs_do_send(int argc, char **argv) 2313 { 2314 char *fromname = NULL; 2315 char *toname = NULL; 2316 char *cp; 2317 zfs_handle_t *zhp; 2318 boolean_t doall = B_FALSE; 2319 boolean_t replicate = B_FALSE; 2320 boolean_t fromorigin = B_FALSE; 2321 boolean_t verbose = B_FALSE; 2322 int c, err; 2323 2324 /* check options */ 2325 while ((c = getopt(argc, argv, ":i:I:Rv")) != -1) { 2326 switch (c) { 2327 case 'i': 2328 if (fromname) 2329 usage(B_FALSE); 2330 fromname = optarg; 2331 break; 2332 case 'I': 2333 if (fromname) 2334 usage(B_FALSE); 2335 fromname = optarg; 2336 doall = B_TRUE; 2337 break; 2338 case 'R': 2339 replicate = B_TRUE; 2340 break; 2341 case 'v': 2342 verbose = B_TRUE; 2343 break; 2344 case ':': 2345 (void) fprintf(stderr, gettext("missing argument for " 2346 "'%c' option\n"), optopt); 2347 usage(B_FALSE); 2348 break; 2349 case '?': 2350 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2351 optopt); 2352 usage(B_FALSE); 2353 } 2354 } 2355 2356 argc -= optind; 2357 argv += optind; 2358 2359 /* check number of arguments */ 2360 if (argc < 1) { 2361 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2362 usage(B_FALSE); 2363 } 2364 if (argc > 1) { 2365 (void) fprintf(stderr, gettext("too many arguments\n")); 2366 usage(B_FALSE); 2367 } 2368 2369 if (isatty(STDOUT_FILENO)) { 2370 (void) fprintf(stderr, 2371 gettext("Error: Stream can not be written to a terminal.\n" 2372 "You must redirect standard output.\n")); 2373 return (1); 2374 } 2375 2376 cp = strchr(argv[0], '@'); 2377 if (cp == NULL) { 2378 (void) fprintf(stderr, 2379 gettext("argument must be a snapshot\n")); 2380 usage(B_FALSE); 2381 } 2382 *cp = '\0'; 2383 toname = cp + 1; 2384 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2385 if (zhp == NULL) 2386 return (1); 2387 2388 /* 2389 * If they specified the full path to the snapshot, chop off 2390 * everything except the short name of the snapshot, but special 2391 * case if they specify the origin. 2392 */ 2393 if (fromname && (cp = strchr(fromname, '@')) != NULL) { 2394 char origin[ZFS_MAXNAMELEN]; 2395 zprop_source_t src; 2396 2397 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN, 2398 origin, sizeof (origin), &src, NULL, 0, B_FALSE); 2399 2400 if (strcmp(origin, fromname) == 0) { 2401 fromname = NULL; 2402 fromorigin = B_TRUE; 2403 } else { 2404 *cp = '\0'; 2405 if (cp != fromname && strcmp(argv[0], fromname)) { 2406 (void) fprintf(stderr, 2407 gettext("incremental source must be " 2408 "in same filesystem\n")); 2409 usage(B_FALSE); 2410 } 2411 fromname = cp + 1; 2412 if (strchr(fromname, '@') || strchr(fromname, '/')) { 2413 (void) fprintf(stderr, 2414 gettext("invalid incremental source\n")); 2415 usage(B_FALSE); 2416 } 2417 } 2418 } 2419 2420 if (replicate && fromname == NULL) 2421 doall = B_TRUE; 2422 2423 err = zfs_send(zhp, fromname, toname, replicate, doall, fromorigin, 2424 verbose, STDOUT_FILENO); 2425 zfs_close(zhp); 2426 2427 return (err != 0); 2428 } 2429 2430 /* 2431 * zfs receive [-dnvF] <fs@snap> 2432 * 2433 * Restore a backup stream from stdin. 2434 */ 2435 static int 2436 zfs_do_receive(int argc, char **argv) 2437 { 2438 int c, err; 2439 recvflags_t flags; 2440 2441 bzero(&flags, sizeof (recvflags_t)); 2442 /* check options */ 2443 while ((c = getopt(argc, argv, ":dnvF")) != -1) { 2444 switch (c) { 2445 case 'd': 2446 flags.isprefix = B_TRUE; 2447 break; 2448 case 'n': 2449 flags.dryrun = B_TRUE; 2450 break; 2451 case 'v': 2452 flags.verbose = B_TRUE; 2453 break; 2454 case 'F': 2455 flags.force = B_TRUE; 2456 break; 2457 case ':': 2458 (void) fprintf(stderr, gettext("missing argument for " 2459 "'%c' option\n"), optopt); 2460 usage(B_FALSE); 2461 break; 2462 case '?': 2463 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2464 optopt); 2465 usage(B_FALSE); 2466 } 2467 } 2468 2469 argc -= optind; 2470 argv += optind; 2471 2472 /* check number of arguments */ 2473 if (argc < 1) { 2474 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2475 usage(B_FALSE); 2476 } 2477 if (argc > 1) { 2478 (void) fprintf(stderr, gettext("too many arguments\n")); 2479 usage(B_FALSE); 2480 } 2481 2482 if (isatty(STDIN_FILENO)) { 2483 (void) fprintf(stderr, 2484 gettext("Error: Backup stream can not be read " 2485 "from a terminal.\n" 2486 "You must redirect standard input.\n")); 2487 return (1); 2488 } 2489 2490 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL); 2491 2492 return (err != 0); 2493 } 2494 2495 typedef struct allow_cb { 2496 int a_permcnt; 2497 size_t a_treeoffset; 2498 } allow_cb_t; 2499 2500 static void 2501 zfs_print_perms(avl_tree_t *tree) 2502 { 2503 zfs_perm_node_t *permnode; 2504 2505 permnode = avl_first(tree); 2506 while (permnode != NULL) { 2507 (void) printf("%s", permnode->z_pname); 2508 permnode = AVL_NEXT(tree, permnode); 2509 if (permnode) 2510 (void) printf(","); 2511 else 2512 (void) printf("\n"); 2513 } 2514 } 2515 2516 /* 2517 * Iterate over user/groups/everyone/... and the call perm_iter 2518 * function to print actual permission when tree has >0 nodes. 2519 */ 2520 static void 2521 zfs_iter_perms(avl_tree_t *tree, const char *banner, allow_cb_t *cb) 2522 { 2523 zfs_allow_node_t *item; 2524 avl_tree_t *ptree; 2525 2526 item = avl_first(tree); 2527 while (item) { 2528 ptree = (void *)((char *)item + cb->a_treeoffset); 2529 if (avl_numnodes(ptree)) { 2530 if (cb->a_permcnt++ == 0) 2531 (void) printf("%s\n", banner); 2532 (void) printf("\t%s", item->z_key); 2533 /* 2534 * Avoid an extra space being printed 2535 * for "everyone" which is keyed with a null 2536 * string 2537 */ 2538 if (item->z_key[0] != '\0') 2539 (void) printf(" "); 2540 zfs_print_perms(ptree); 2541 } 2542 item = AVL_NEXT(tree, item); 2543 } 2544 } 2545 2546 #define LINES "-------------------------------------------------------------\n" 2547 static int 2548 zfs_print_allows(char *ds) 2549 { 2550 zfs_allow_t *curperms, *perms; 2551 zfs_handle_t *zhp; 2552 allow_cb_t allowcb = { 0 }; 2553 char banner[MAXPATHLEN]; 2554 2555 if (ds[0] == '-') 2556 usage(B_FALSE); 2557 2558 if (strrchr(ds, '@')) { 2559 (void) fprintf(stderr, gettext("Snapshots don't have 'allow'" 2560 " permissions\n")); 2561 return (1); 2562 } 2563 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL) 2564 return (1); 2565 2566 if (zfs_perm_get(zhp, &perms)) { 2567 (void) fprintf(stderr, 2568 gettext("Failed to retrieve 'allows' on %s\n"), ds); 2569 zfs_close(zhp); 2570 return (1); 2571 } 2572 2573 zfs_close(zhp); 2574 2575 if (perms != NULL) 2576 (void) printf("%s", LINES); 2577 for (curperms = perms; curperms; curperms = curperms->z_next) { 2578 2579 (void) snprintf(banner, sizeof (banner), 2580 "Permission sets on (%s)", curperms->z_setpoint); 2581 allowcb.a_treeoffset = 2582 offsetof(zfs_allow_node_t, z_localdescend); 2583 allowcb.a_permcnt = 0; 2584 zfs_iter_perms(&curperms->z_sets, banner, &allowcb); 2585 2586 (void) snprintf(banner, sizeof (banner), 2587 "Create time permissions on (%s)", curperms->z_setpoint); 2588 allowcb.a_treeoffset = 2589 offsetof(zfs_allow_node_t, z_localdescend); 2590 allowcb.a_permcnt = 0; 2591 zfs_iter_perms(&curperms->z_crperms, banner, &allowcb); 2592 2593 2594 (void) snprintf(banner, sizeof (banner), 2595 "Local permissions on (%s)", curperms->z_setpoint); 2596 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_local); 2597 allowcb.a_permcnt = 0; 2598 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2599 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2600 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2601 2602 (void) snprintf(banner, sizeof (banner), 2603 "Descendent permissions on (%s)", curperms->z_setpoint); 2604 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_descend); 2605 allowcb.a_permcnt = 0; 2606 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2607 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2608 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2609 2610 (void) snprintf(banner, sizeof (banner), 2611 "Local+Descendent permissions on (%s)", 2612 curperms->z_setpoint); 2613 allowcb.a_treeoffset = 2614 offsetof(zfs_allow_node_t, z_localdescend); 2615 allowcb.a_permcnt = 0; 2616 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2617 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2618 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2619 2620 (void) printf("%s", LINES); 2621 } 2622 zfs_free_allows(perms); 2623 return (0); 2624 } 2625 2626 #define ALLOWOPTIONS "ldcsu:g:e" 2627 #define UNALLOWOPTIONS "ldcsu:g:er" 2628 2629 /* 2630 * Validate options, and build necessary datastructure to display/remove/add 2631 * permissions. 2632 * Returns 0 - If permissions should be added/removed 2633 * Returns 1 - If permissions should be displayed. 2634 * Returns -1 - on failure 2635 */ 2636 int 2637 parse_allow_args(int *argc, char **argv[], boolean_t unallow, 2638 char **ds, int *recurse, nvlist_t **zperms) 2639 { 2640 int c; 2641 char *options = unallow ? UNALLOWOPTIONS : ALLOWOPTIONS; 2642 zfs_deleg_inherit_t deleg_type = ZFS_DELEG_NONE; 2643 zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN; 2644 char *who = NULL; 2645 char *perms = NULL; 2646 zfs_handle_t *zhp; 2647 2648 while ((c = getopt(*argc, *argv, options)) != -1) { 2649 switch (c) { 2650 case 'l': 2651 if (who_type == ZFS_DELEG_CREATE || 2652 who_type == ZFS_DELEG_NAMED_SET) 2653 usage(B_FALSE); 2654 2655 deleg_type |= ZFS_DELEG_PERM_LOCAL; 2656 break; 2657 case 'd': 2658 if (who_type == ZFS_DELEG_CREATE || 2659 who_type == ZFS_DELEG_NAMED_SET) 2660 usage(B_FALSE); 2661 2662 deleg_type |= ZFS_DELEG_PERM_DESCENDENT; 2663 break; 2664 case 'r': 2665 *recurse = B_TRUE; 2666 break; 2667 case 'c': 2668 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2669 usage(B_FALSE); 2670 if (deleg_type) 2671 usage(B_FALSE); 2672 who_type = ZFS_DELEG_CREATE; 2673 break; 2674 case 's': 2675 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2676 usage(B_FALSE); 2677 if (deleg_type) 2678 usage(B_FALSE); 2679 who_type = ZFS_DELEG_NAMED_SET; 2680 break; 2681 case 'u': 2682 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2683 usage(B_FALSE); 2684 who_type = ZFS_DELEG_USER; 2685 who = optarg; 2686 break; 2687 case 'g': 2688 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2689 usage(B_FALSE); 2690 who_type = ZFS_DELEG_GROUP; 2691 who = optarg; 2692 break; 2693 case 'e': 2694 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2695 usage(B_FALSE); 2696 who_type = ZFS_DELEG_EVERYONE; 2697 break; 2698 default: 2699 usage(B_FALSE); 2700 break; 2701 } 2702 } 2703 2704 if (deleg_type == 0) 2705 deleg_type = ZFS_DELEG_PERM_LOCALDESCENDENT; 2706 2707 *argc -= optind; 2708 *argv += optind; 2709 2710 if (unallow == B_FALSE && *argc == 1) { 2711 /* 2712 * Only print permissions if no options were processed 2713 */ 2714 if (optind == 1) 2715 return (1); 2716 else 2717 usage(B_FALSE); 2718 } 2719 2720 /* 2721 * initialize variables for zfs_build_perms based on number 2722 * of arguments. 2723 * 3 arguments ==> zfs [un]allow joe perm,perm,perm <dataset> or 2724 * zfs [un]allow -s @set1 perm,perm <dataset> 2725 * 2 arguments ==> zfs [un]allow -c perm,perm <dataset> or 2726 * zfs [un]allow -u|-g <name> perm <dataset> or 2727 * zfs [un]allow -e perm,perm <dataset> 2728 * zfs unallow joe <dataset> 2729 * zfs unallow -s @set1 <dataset> 2730 * 1 argument ==> zfs [un]allow -e <dataset> or 2731 * zfs [un]allow -c <dataset> 2732 */ 2733 2734 switch (*argc) { 2735 case 3: 2736 perms = (*argv)[1]; 2737 who = (*argv)[0]; 2738 *ds = (*argv)[2]; 2739 2740 /* 2741 * advance argc/argv for do_allow cases. 2742 * for do_allow case make sure who have a know who type 2743 * and its not a permission set. 2744 */ 2745 if (unallow == B_TRUE) { 2746 *argc -= 2; 2747 *argv += 2; 2748 } else if (who_type != ZFS_DELEG_WHO_UNKNOWN && 2749 who_type != ZFS_DELEG_NAMED_SET) 2750 usage(B_FALSE); 2751 break; 2752 2753 case 2: 2754 if (unallow == B_TRUE && (who_type == ZFS_DELEG_EVERYONE || 2755 who_type == ZFS_DELEG_CREATE || who != NULL)) { 2756 perms = (*argv)[0]; 2757 *ds = (*argv)[1]; 2758 } else { 2759 if (unallow == B_FALSE && 2760 (who_type == ZFS_DELEG_WHO_UNKNOWN || 2761 who_type == ZFS_DELEG_NAMED_SET)) 2762 usage(B_FALSE); 2763 else if (who_type == ZFS_DELEG_WHO_UNKNOWN || 2764 who_type == ZFS_DELEG_NAMED_SET) 2765 who = (*argv)[0]; 2766 else if (who_type != ZFS_DELEG_NAMED_SET) 2767 perms = (*argv)[0]; 2768 *ds = (*argv)[1]; 2769 } 2770 if (unallow == B_TRUE) { 2771 (*argc)--; 2772 (*argv)++; 2773 } 2774 break; 2775 2776 case 1: 2777 if (unallow == B_FALSE) 2778 usage(B_FALSE); 2779 if (who == NULL && who_type != ZFS_DELEG_CREATE && 2780 who_type != ZFS_DELEG_EVERYONE) 2781 usage(B_FALSE); 2782 *ds = (*argv)[0]; 2783 break; 2784 2785 default: 2786 usage(B_FALSE); 2787 } 2788 2789 if (strrchr(*ds, '@')) { 2790 (void) fprintf(stderr, 2791 gettext("Can't set or remove 'allow' permissions " 2792 "on snapshots.\n")); 2793 return (-1); 2794 } 2795 2796 if ((zhp = zfs_open(g_zfs, *ds, ZFS_TYPE_DATASET)) == NULL) 2797 return (-1); 2798 2799 if ((zfs_build_perms(zhp, who, perms, 2800 who_type, deleg_type, zperms)) != 0) { 2801 zfs_close(zhp); 2802 return (-1); 2803 } 2804 zfs_close(zhp); 2805 return (0); 2806 } 2807 2808 static int 2809 zfs_do_allow(int argc, char **argv) 2810 { 2811 char *ds; 2812 nvlist_t *zperms = NULL; 2813 zfs_handle_t *zhp; 2814 int unused; 2815 int ret; 2816 2817 if ((ret = parse_allow_args(&argc, &argv, B_FALSE, &ds, 2818 &unused, &zperms)) == -1) 2819 return (1); 2820 2821 if (ret == 1) 2822 return (zfs_print_allows(argv[0])); 2823 2824 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL) 2825 return (1); 2826 2827 if (zfs_perm_set(zhp, zperms)) { 2828 zfs_close(zhp); 2829 nvlist_free(zperms); 2830 return (1); 2831 } 2832 nvlist_free(zperms); 2833 zfs_close(zhp); 2834 2835 return (0); 2836 } 2837 2838 static int 2839 unallow_callback(zfs_handle_t *zhp, void *data) 2840 { 2841 nvlist_t *nvp = (nvlist_t *)data; 2842 int error; 2843 2844 error = zfs_perm_remove(zhp, nvp); 2845 if (error) { 2846 (void) fprintf(stderr, gettext("Failed to remove permissions " 2847 "on %s\n"), zfs_get_name(zhp)); 2848 } 2849 return (error); 2850 } 2851 2852 static int 2853 zfs_do_unallow(int argc, char **argv) 2854 { 2855 int recurse = B_FALSE; 2856 char *ds; 2857 int error; 2858 nvlist_t *zperms = NULL; 2859 2860 if (parse_allow_args(&argc, &argv, B_TRUE, 2861 &ds, &recurse, &zperms) == -1) 2862 return (1); 2863 2864 error = zfs_for_each(argc, argv, recurse, 2865 ZFS_TYPE_FILESYSTEM|ZFS_TYPE_VOLUME, NULL, 2866 NULL, unallow_callback, (void *)zperms, B_FALSE); 2867 2868 if (zperms) 2869 nvlist_free(zperms); 2870 2871 return (error); 2872 } 2873 2874 typedef struct get_all_cbdata { 2875 zfs_handle_t **cb_handles; 2876 size_t cb_alloc; 2877 size_t cb_used; 2878 uint_t cb_types; 2879 boolean_t cb_verbose; 2880 } get_all_cbdata_t; 2881 2882 #define CHECK_SPINNER 30 2883 #define SPINNER_TIME 3 /* seconds */ 2884 #define MOUNT_TIME 5 /* seconds */ 2885 2886 static int 2887 get_one_dataset(zfs_handle_t *zhp, void *data) 2888 { 2889 static char spin[] = { '-', '\\', '|', '/' }; 2890 static int spinval = 0; 2891 static int spincheck = 0; 2892 static time_t last_spin_time = (time_t)0; 2893 get_all_cbdata_t *cbp = data; 2894 zfs_type_t type = zfs_get_type(zhp); 2895 2896 if (cbp->cb_verbose) { 2897 if (--spincheck < 0) { 2898 time_t now = time(NULL); 2899 if (last_spin_time + SPINNER_TIME < now) { 2900 (void) printf("\b%c", spin[spinval++ % 4]); 2901 (void) fflush(stdout); 2902 last_spin_time = now; 2903 } 2904 spincheck = CHECK_SPINNER; 2905 } 2906 } 2907 2908 /* 2909 * Interate over any nested datasets. 2910 */ 2911 if (type == ZFS_TYPE_FILESYSTEM && 2912 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) { 2913 zfs_close(zhp); 2914 return (1); 2915 } 2916 2917 /* 2918 * Skip any datasets whose type does not match. 2919 */ 2920 if ((type & cbp->cb_types) == 0) { 2921 zfs_close(zhp); 2922 return (0); 2923 } 2924 2925 if (cbp->cb_alloc == cbp->cb_used) { 2926 zfs_handle_t **handles; 2927 2928 if (cbp->cb_alloc == 0) 2929 cbp->cb_alloc = 64; 2930 else 2931 cbp->cb_alloc *= 2; 2932 2933 handles = safe_malloc(cbp->cb_alloc * sizeof (void *)); 2934 2935 if (cbp->cb_handles) { 2936 bcopy(cbp->cb_handles, handles, 2937 cbp->cb_used * sizeof (void *)); 2938 free(cbp->cb_handles); 2939 } 2940 2941 cbp->cb_handles = handles; 2942 } 2943 2944 cbp->cb_handles[cbp->cb_used++] = zhp; 2945 2946 return (0); 2947 } 2948 2949 static void 2950 get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count, 2951 boolean_t verbose) 2952 { 2953 get_all_cbdata_t cb = { 0 }; 2954 cb.cb_types = types; 2955 cb.cb_verbose = verbose; 2956 2957 if (verbose) { 2958 (void) printf("%s: *", gettext("Reading ZFS config")); 2959 (void) fflush(stdout); 2960 } 2961 2962 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb); 2963 2964 *dslist = cb.cb_handles; 2965 *count = cb.cb_used; 2966 2967 if (verbose) { 2968 (void) printf("\b%s\n", gettext("done.")); 2969 } 2970 } 2971 2972 static int 2973 dataset_cmp(const void *a, const void *b) 2974 { 2975 zfs_handle_t **za = (zfs_handle_t **)a; 2976 zfs_handle_t **zb = (zfs_handle_t **)b; 2977 char mounta[MAXPATHLEN]; 2978 char mountb[MAXPATHLEN]; 2979 boolean_t gota, gotb; 2980 2981 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0) 2982 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta, 2983 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0); 2984 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0) 2985 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb, 2986 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0); 2987 2988 if (gota && gotb) 2989 return (strcmp(mounta, mountb)); 2990 2991 if (gota) 2992 return (-1); 2993 if (gotb) 2994 return (1); 2995 2996 return (strcmp(zfs_get_name(a), zfs_get_name(b))); 2997 } 2998 2999 /* 3000 * Generic callback for sharing or mounting filesystems. Because the code is so 3001 * similar, we have a common function with an extra parameter to determine which 3002 * mode we are using. 3003 */ 3004 #define OP_SHARE 0x1 3005 #define OP_MOUNT 0x2 3006 3007 /* 3008 * Share or mount a dataset. 3009 */ 3010 static int 3011 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol, 3012 boolean_t explicit, const char *options) 3013 { 3014 char mountpoint[ZFS_MAXPROPLEN]; 3015 char shareopts[ZFS_MAXPROPLEN]; 3016 char smbshareopts[ZFS_MAXPROPLEN]; 3017 const char *cmdname = op == OP_SHARE ? "share" : "mount"; 3018 struct mnttab mnt; 3019 uint64_t zoned, canmount; 3020 zfs_type_t type = zfs_get_type(zhp); 3021 boolean_t shared_nfs, shared_smb; 3022 3023 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)); 3024 3025 if (type == ZFS_TYPE_FILESYSTEM) { 3026 /* 3027 * Check to make sure we can mount/share this dataset. If we 3028 * are in the global zone and the filesystem is exported to a 3029 * local zone, or if we are in a local zone and the 3030 * filesystem is not exported, then it is an error. 3031 */ 3032 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 3033 3034 if (zoned && getzoneid() == GLOBAL_ZONEID) { 3035 if (!explicit) 3036 return (0); 3037 3038 (void) fprintf(stderr, gettext("cannot %s '%s': " 3039 "dataset is exported to a local zone\n"), cmdname, 3040 zfs_get_name(zhp)); 3041 return (1); 3042 3043 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) { 3044 if (!explicit) 3045 return (0); 3046 3047 (void) fprintf(stderr, gettext("cannot %s '%s': " 3048 "permission denied\n"), cmdname, 3049 zfs_get_name(zhp)); 3050 return (1); 3051 } 3052 3053 /* 3054 * Ignore any filesystems which don't apply to us. This 3055 * includes those with a legacy mountpoint, or those with 3056 * legacy share options. 3057 */ 3058 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 3059 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0); 3060 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts, 3061 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3062 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts, 3063 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0); 3064 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 3065 3066 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 && 3067 strcmp(smbshareopts, "off") == 0) { 3068 if (!explicit) 3069 return (0); 3070 3071 (void) fprintf(stderr, gettext("cannot share '%s': " 3072 "legacy share\n"), zfs_get_name(zhp)); 3073 (void) fprintf(stderr, gettext("use share(1M) to " 3074 "share this filesystem\n")); 3075 return (1); 3076 } 3077 3078 /* 3079 * We cannot share or mount legacy filesystems. If the 3080 * shareopts is non-legacy but the mountpoint is legacy, we 3081 * treat it as a legacy share. 3082 */ 3083 if (strcmp(mountpoint, "legacy") == 0) { 3084 if (!explicit) 3085 return (0); 3086 3087 (void) fprintf(stderr, gettext("cannot %s '%s': " 3088 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp)); 3089 (void) fprintf(stderr, gettext("use %s(1M) to " 3090 "%s this filesystem\n"), cmdname, cmdname); 3091 return (1); 3092 } 3093 3094 if (strcmp(mountpoint, "none") == 0) { 3095 if (!explicit) 3096 return (0); 3097 3098 (void) fprintf(stderr, gettext("cannot %s '%s': no " 3099 "mountpoint set\n"), cmdname, zfs_get_name(zhp)); 3100 return (1); 3101 } 3102 3103 /* 3104 * canmount explicit outcome 3105 * on no pass through 3106 * on yes pass through 3107 * off no return 0 3108 * off yes display error, return 1 3109 * noauto no return 0 3110 * noauto yes pass through 3111 */ 3112 if (canmount == ZFS_CANMOUNT_OFF) { 3113 if (!explicit) 3114 return (0); 3115 3116 (void) fprintf(stderr, gettext("cannot %s '%s': " 3117 "'canmount' property is set to 'off'\n"), cmdname, 3118 zfs_get_name(zhp)); 3119 return (1); 3120 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) { 3121 return (0); 3122 } 3123 3124 /* 3125 * At this point, we have verified that the mountpoint and/or 3126 * shareopts are appropriate for auto management. If the 3127 * filesystem is already mounted or shared, return (failing 3128 * for explicit requests); otherwise mount or share the 3129 * filesystem. 3130 */ 3131 switch (op) { 3132 case OP_SHARE: 3133 3134 shared_nfs = zfs_is_shared_nfs(zhp, NULL); 3135 shared_smb = zfs_is_shared_smb(zhp, NULL); 3136 3137 if (shared_nfs && shared_smb || 3138 (shared_nfs && strcmp(shareopts, "on") == 0 && 3139 strcmp(smbshareopts, "off") == 0) || 3140 (shared_smb && strcmp(smbshareopts, "on") == 0 && 3141 strcmp(shareopts, "off") == 0)) { 3142 if (!explicit) 3143 return (0); 3144 3145 (void) fprintf(stderr, gettext("cannot share " 3146 "'%s': filesystem already shared\n"), 3147 zfs_get_name(zhp)); 3148 return (1); 3149 } 3150 3151 if (!zfs_is_mounted(zhp, NULL) && 3152 zfs_mount(zhp, NULL, 0) != 0) 3153 return (1); 3154 3155 if (protocol == NULL) { 3156 if (zfs_shareall(zhp) != 0) 3157 return (1); 3158 } else if (strcmp(protocol, "nfs") == 0) { 3159 if (zfs_share_nfs(zhp)) 3160 return (1); 3161 } else if (strcmp(protocol, "smb") == 0) { 3162 if (zfs_share_smb(zhp)) 3163 return (1); 3164 } else { 3165 (void) fprintf(stderr, gettext("cannot share " 3166 "'%s': invalid share type '%s' " 3167 "specified\n"), 3168 zfs_get_name(zhp), protocol); 3169 return (1); 3170 } 3171 3172 break; 3173 3174 case OP_MOUNT: 3175 if (options == NULL) 3176 mnt.mnt_mntopts = ""; 3177 else 3178 mnt.mnt_mntopts = (char *)options; 3179 3180 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) && 3181 zfs_is_mounted(zhp, NULL)) { 3182 if (!explicit) 3183 return (0); 3184 3185 (void) fprintf(stderr, gettext("cannot mount " 3186 "'%s': filesystem already mounted\n"), 3187 zfs_get_name(zhp)); 3188 return (1); 3189 } 3190 3191 if (zfs_mount(zhp, options, flags) != 0) 3192 return (1); 3193 break; 3194 } 3195 } else { 3196 assert(op == OP_SHARE); 3197 3198 /* 3199 * Ignore any volumes that aren't shared. 3200 */ 3201 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts, 3202 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3203 3204 if (strcmp(shareopts, "off") == 0) { 3205 if (!explicit) 3206 return (0); 3207 3208 (void) fprintf(stderr, gettext("cannot share '%s': " 3209 "'shareiscsi' property not set\n"), 3210 zfs_get_name(zhp)); 3211 (void) fprintf(stderr, gettext("set 'shareiscsi' " 3212 "property or use iscsitadm(1M) to share this " 3213 "volume\n")); 3214 return (1); 3215 } 3216 3217 if (zfs_is_shared_iscsi(zhp)) { 3218 if (!explicit) 3219 return (0); 3220 3221 (void) fprintf(stderr, gettext("cannot share " 3222 "'%s': volume already shared\n"), 3223 zfs_get_name(zhp)); 3224 return (1); 3225 } 3226 3227 if (zfs_share_iscsi(zhp) != 0) 3228 return (1); 3229 } 3230 3231 return (0); 3232 } 3233 3234 /* 3235 * Reports progress in the form "(current/total)". Not thread-safe. 3236 */ 3237 static void 3238 report_mount_progress(int current, int total) 3239 { 3240 static int len; 3241 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b" 3242 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"; 3243 static time_t last_progress_time; 3244 time_t now = time(NULL); 3245 3246 /* report 1..n instead of 0..n-1 */ 3247 ++current; 3248 3249 /* display header if we're here for the first time */ 3250 if (current == 1) { 3251 (void) printf(gettext("Mounting ZFS filesystems: ")); 3252 len = 0; 3253 } else if (current != total && last_progress_time + MOUNT_TIME >= now) { 3254 /* too soon to report again */ 3255 return; 3256 } 3257 3258 last_progress_time = now; 3259 3260 /* back up to prepare for overwriting */ 3261 if (len) 3262 (void) printf("%*.*s", len, len, reverse); 3263 3264 /* We put a newline at the end if this is the last one. */ 3265 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : ""); 3266 (void) fflush(stdout); 3267 } 3268 3269 static void 3270 append_options(char *mntopts, char *newopts) 3271 { 3272 int len = strlen(mntopts); 3273 3274 /* original length plus new string to append plus 1 for the comma */ 3275 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) { 3276 (void) fprintf(stderr, gettext("the opts argument for " 3277 "'%c' option is too long (more than %d chars)\n"), 3278 "-o", MNT_LINE_MAX); 3279 usage(B_FALSE); 3280 } 3281 3282 if (*mntopts) 3283 mntopts[len++] = ','; 3284 3285 (void) strcpy(&mntopts[len], newopts); 3286 } 3287 3288 static int 3289 share_mount(int op, int argc, char **argv) 3290 { 3291 int do_all = 0; 3292 boolean_t verbose = B_FALSE; 3293 int c, ret = 0; 3294 char *options = NULL; 3295 int types, flags = 0; 3296 3297 /* check options */ 3298 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a")) 3299 != -1) { 3300 switch (c) { 3301 case 'a': 3302 do_all = 1; 3303 break; 3304 case 'v': 3305 verbose = B_TRUE; 3306 break; 3307 case 'o': 3308 if (*optarg == '\0') { 3309 (void) fprintf(stderr, gettext("empty mount " 3310 "options (-o) specified\n")); 3311 usage(B_FALSE); 3312 } 3313 3314 if (options == NULL) 3315 options = safe_malloc(MNT_LINE_MAX + 1); 3316 3317 /* option validation is done later */ 3318 append_options(options, optarg); 3319 break; 3320 3321 case 'O': 3322 flags |= MS_OVERLAY; 3323 break; 3324 case ':': 3325 (void) fprintf(stderr, gettext("missing argument for " 3326 "'%c' option\n"), optopt); 3327 usage(B_FALSE); 3328 break; 3329 case '?': 3330 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3331 optopt); 3332 usage(B_FALSE); 3333 } 3334 } 3335 3336 argc -= optind; 3337 argv += optind; 3338 3339 /* check number of arguments */ 3340 if (do_all) { 3341 zfs_handle_t **dslist = NULL; 3342 size_t i, count = 0; 3343 char *protocol = NULL; 3344 3345 if (op == OP_MOUNT) { 3346 types = ZFS_TYPE_FILESYSTEM; 3347 } else if (argc > 0) { 3348 if (strcmp(argv[0], "nfs") == 0 || 3349 strcmp(argv[0], "smb") == 0) { 3350 types = ZFS_TYPE_FILESYSTEM; 3351 } else if (strcmp(argv[0], "iscsi") == 0) { 3352 types = ZFS_TYPE_VOLUME; 3353 } else { 3354 (void) fprintf(stderr, gettext("share type " 3355 "must be 'nfs', 'smb' or 'iscsi'\n")); 3356 usage(B_FALSE); 3357 } 3358 protocol = argv[0]; 3359 argc--; 3360 argv++; 3361 } else { 3362 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME; 3363 } 3364 3365 if (argc != 0) { 3366 (void) fprintf(stderr, gettext("too many arguments\n")); 3367 usage(B_FALSE); 3368 } 3369 3370 get_all_datasets(types, &dslist, &count, verbose); 3371 3372 if (count == 0) 3373 return (0); 3374 3375 qsort(dslist, count, sizeof (void *), dataset_cmp); 3376 3377 for (i = 0; i < count; i++) { 3378 if (verbose) 3379 report_mount_progress(i, count); 3380 3381 if (share_mount_one(dslist[i], op, flags, protocol, 3382 B_FALSE, options) != 0) 3383 ret = 1; 3384 zfs_close(dslist[i]); 3385 } 3386 3387 free(dslist); 3388 } else if (argc == 0) { 3389 struct mnttab entry; 3390 3391 if ((op == OP_SHARE) || (options != NULL)) { 3392 (void) fprintf(stderr, gettext("missing filesystem " 3393 "argument (specify -a for all)\n")); 3394 usage(B_FALSE); 3395 } 3396 3397 /* 3398 * When mount is given no arguments, go through /etc/mnttab and 3399 * display any active ZFS mounts. We hide any snapshots, since 3400 * they are controlled automatically. 3401 */ 3402 rewind(mnttab_file); 3403 while (getmntent(mnttab_file, &entry) == 0) { 3404 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 || 3405 strchr(entry.mnt_special, '@') != NULL) 3406 continue; 3407 3408 (void) printf("%-30s %s\n", entry.mnt_special, 3409 entry.mnt_mountp); 3410 } 3411 3412 } else { 3413 zfs_handle_t *zhp; 3414 3415 types = ZFS_TYPE_FILESYSTEM; 3416 if (op == OP_SHARE) 3417 types |= ZFS_TYPE_VOLUME; 3418 3419 if (argc > 1) { 3420 (void) fprintf(stderr, 3421 gettext("too many arguments\n")); 3422 usage(B_FALSE); 3423 } 3424 3425 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) { 3426 ret = 1; 3427 } else { 3428 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE, 3429 options); 3430 zfs_close(zhp); 3431 } 3432 } 3433 3434 return (ret); 3435 } 3436 3437 /* 3438 * zfs mount -a [nfs | iscsi] 3439 * zfs mount filesystem 3440 * 3441 * Mount all filesystems, or mount the given filesystem. 3442 */ 3443 static int 3444 zfs_do_mount(int argc, char **argv) 3445 { 3446 return (share_mount(OP_MOUNT, argc, argv)); 3447 } 3448 3449 /* 3450 * zfs share -a [nfs | iscsi | smb] 3451 * zfs share filesystem 3452 * 3453 * Share all filesystems, or share the given filesystem. 3454 */ 3455 static int 3456 zfs_do_share(int argc, char **argv) 3457 { 3458 return (share_mount(OP_SHARE, argc, argv)); 3459 } 3460 3461 typedef struct unshare_unmount_node { 3462 zfs_handle_t *un_zhp; 3463 char *un_mountp; 3464 uu_avl_node_t un_avlnode; 3465 } unshare_unmount_node_t; 3466 3467 /* ARGSUSED */ 3468 static int 3469 unshare_unmount_compare(const void *larg, const void *rarg, void *unused) 3470 { 3471 const unshare_unmount_node_t *l = larg; 3472 const unshare_unmount_node_t *r = rarg; 3473 3474 return (strcmp(l->un_mountp, r->un_mountp)); 3475 } 3476 3477 /* 3478 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an 3479 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem, 3480 * and unmount it appropriately. 3481 */ 3482 static int 3483 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual) 3484 { 3485 zfs_handle_t *zhp; 3486 int ret; 3487 struct stat64 statbuf; 3488 struct extmnttab entry; 3489 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount"; 3490 ino_t path_inode; 3491 3492 /* 3493 * Search for the path in /etc/mnttab. Rather than looking for the 3494 * specific path, which can be fooled by non-standard paths (i.e. ".." 3495 * or "//"), we stat() the path and search for the corresponding 3496 * (major,minor) device pair. 3497 */ 3498 if (stat64(path, &statbuf) != 0) { 3499 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3500 cmdname, path, strerror(errno)); 3501 return (1); 3502 } 3503 path_inode = statbuf.st_ino; 3504 3505 /* 3506 * Search for the given (major,minor) pair in the mount table. 3507 */ 3508 rewind(mnttab_file); 3509 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) { 3510 if (entry.mnt_major == major(statbuf.st_dev) && 3511 entry.mnt_minor == minor(statbuf.st_dev)) 3512 break; 3513 } 3514 if (ret != 0) { 3515 if (op == OP_SHARE) { 3516 (void) fprintf(stderr, gettext("cannot %s '%s': not " 3517 "currently mounted\n"), cmdname, path); 3518 return (1); 3519 } 3520 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"), 3521 path); 3522 if ((ret = umount2(path, flags)) != 0) 3523 (void) fprintf(stderr, gettext("%s: %s\n"), path, 3524 strerror(errno)); 3525 return (ret != 0); 3526 } 3527 3528 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) { 3529 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS " 3530 "filesystem\n"), cmdname, path); 3531 return (1); 3532 } 3533 3534 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3535 ZFS_TYPE_FILESYSTEM)) == NULL) 3536 return (1); 3537 3538 ret = 1; 3539 if (stat64(entry.mnt_mountp, &statbuf) != 0) { 3540 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3541 cmdname, path, strerror(errno)); 3542 goto out; 3543 } else if (statbuf.st_ino != path_inode) { 3544 (void) fprintf(stderr, gettext("cannot " 3545 "%s '%s': not a mountpoint\n"), cmdname, path); 3546 goto out; 3547 } 3548 3549 if (op == OP_SHARE) { 3550 char nfs_mnt_prop[ZFS_MAXPROPLEN]; 3551 char smbshare_prop[ZFS_MAXPROPLEN]; 3552 3553 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop, 3554 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0); 3555 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop, 3556 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0); 3557 3558 if (strcmp(nfs_mnt_prop, "off") == 0 && 3559 strcmp(smbshare_prop, "off") == 0) { 3560 (void) fprintf(stderr, gettext("cannot unshare " 3561 "'%s': legacy share\n"), path); 3562 (void) fprintf(stderr, gettext("use " 3563 "unshare(1M) to unshare this filesystem\n")); 3564 } else if (!zfs_is_shared(zhp)) { 3565 (void) fprintf(stderr, gettext("cannot unshare '%s': " 3566 "not currently shared\n"), path); 3567 } else { 3568 ret = zfs_unshareall_bypath(zhp, path); 3569 } 3570 } else { 3571 char mtpt_prop[ZFS_MAXPROPLEN]; 3572 3573 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop, 3574 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0); 3575 3576 if (is_manual) { 3577 ret = zfs_unmount(zhp, NULL, flags); 3578 } else if (strcmp(mtpt_prop, "legacy") == 0) { 3579 (void) fprintf(stderr, gettext("cannot unmount " 3580 "'%s': legacy mountpoint\n"), 3581 zfs_get_name(zhp)); 3582 (void) fprintf(stderr, gettext("use umount(1M) " 3583 "to unmount this filesystem\n")); 3584 } else { 3585 ret = zfs_unmountall(zhp, flags); 3586 } 3587 } 3588 3589 out: 3590 zfs_close(zhp); 3591 3592 return (ret != 0); 3593 } 3594 3595 /* 3596 * Generic callback for unsharing or unmounting a filesystem. 3597 */ 3598 static int 3599 unshare_unmount(int op, int argc, char **argv) 3600 { 3601 int do_all = 0; 3602 int flags = 0; 3603 int ret = 0; 3604 int types, c; 3605 zfs_handle_t *zhp; 3606 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN]; 3607 char sharesmb[ZFS_MAXPROPLEN]; 3608 3609 /* check options */ 3610 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) { 3611 switch (c) { 3612 case 'a': 3613 do_all = 1; 3614 break; 3615 case 'f': 3616 flags = MS_FORCE; 3617 break; 3618 case '?': 3619 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3620 optopt); 3621 usage(B_FALSE); 3622 } 3623 } 3624 3625 argc -= optind; 3626 argv += optind; 3627 3628 if (do_all) { 3629 /* 3630 * We could make use of zfs_for_each() to walk all datasets in 3631 * the system, but this would be very inefficient, especially 3632 * since we would have to linearly search /etc/mnttab for each 3633 * one. Instead, do one pass through /etc/mnttab looking for 3634 * zfs entries and call zfs_unmount() for each one. 3635 * 3636 * Things get a little tricky if the administrator has created 3637 * mountpoints beneath other ZFS filesystems. In this case, we 3638 * have to unmount the deepest filesystems first. To accomplish 3639 * this, we place all the mountpoints in an AVL tree sorted by 3640 * the special type (dataset name), and walk the result in 3641 * reverse to make sure to get any snapshots first. 3642 */ 3643 struct mnttab entry; 3644 uu_avl_pool_t *pool; 3645 uu_avl_t *tree; 3646 unshare_unmount_node_t *node; 3647 uu_avl_index_t idx; 3648 uu_avl_walk_t *walk; 3649 3650 if (argc != 0) { 3651 (void) fprintf(stderr, gettext("too many arguments\n")); 3652 usage(B_FALSE); 3653 } 3654 3655 if ((pool = uu_avl_pool_create("unmount_pool", 3656 sizeof (unshare_unmount_node_t), 3657 offsetof(unshare_unmount_node_t, un_avlnode), 3658 unshare_unmount_compare, 3659 UU_DEFAULT)) == NULL) { 3660 (void) fprintf(stderr, gettext("internal error: " 3661 "out of memory\n")); 3662 exit(1); 3663 } 3664 3665 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) { 3666 (void) fprintf(stderr, gettext("internal error: " 3667 "out of memory\n")); 3668 exit(1); 3669 } 3670 3671 rewind(mnttab_file); 3672 while (getmntent(mnttab_file, &entry) == 0) { 3673 3674 /* ignore non-ZFS entries */ 3675 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 3676 continue; 3677 3678 /* ignore snapshots */ 3679 if (strchr(entry.mnt_special, '@') != NULL) 3680 continue; 3681 3682 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3683 ZFS_TYPE_FILESYSTEM)) == NULL) { 3684 ret = 1; 3685 continue; 3686 } 3687 3688 switch (op) { 3689 case OP_SHARE: 3690 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3691 nfsiscsi_mnt_prop, 3692 sizeof (nfsiscsi_mnt_prop), 3693 NULL, NULL, 0, B_FALSE) == 0); 3694 if (strcmp(nfsiscsi_mnt_prop, "off") != 0) 3695 break; 3696 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3697 nfsiscsi_mnt_prop, 3698 sizeof (nfsiscsi_mnt_prop), 3699 NULL, NULL, 0, B_FALSE) == 0); 3700 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) 3701 continue; 3702 break; 3703 case OP_MOUNT: 3704 /* Ignore legacy mounts */ 3705 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, 3706 nfsiscsi_mnt_prop, 3707 sizeof (nfsiscsi_mnt_prop), 3708 NULL, NULL, 0, B_FALSE) == 0); 3709 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) 3710 continue; 3711 /* Ignore canmount=noauto mounts */ 3712 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == 3713 ZFS_CANMOUNT_NOAUTO) 3714 continue; 3715 default: 3716 break; 3717 } 3718 3719 node = safe_malloc(sizeof (unshare_unmount_node_t)); 3720 node->un_zhp = zhp; 3721 3722 if ((node->un_mountp = strdup(entry.mnt_mountp)) == 3723 NULL) { 3724 (void) fprintf(stderr, gettext("internal error:" 3725 " out of memory\n")); 3726 exit(1); 3727 } 3728 3729 uu_avl_node_init(node, &node->un_avlnode, pool); 3730 3731 if (uu_avl_find(tree, node, NULL, &idx) == NULL) { 3732 uu_avl_insert(tree, node, idx); 3733 } else { 3734 zfs_close(node->un_zhp); 3735 free(node->un_mountp); 3736 free(node); 3737 } 3738 } 3739 3740 /* 3741 * Walk the AVL tree in reverse, unmounting each filesystem and 3742 * removing it from the AVL tree in the process. 3743 */ 3744 if ((walk = uu_avl_walk_start(tree, 3745 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) { 3746 (void) fprintf(stderr, 3747 gettext("internal error: out of memory")); 3748 exit(1); 3749 } 3750 3751 while ((node = uu_avl_walk_next(walk)) != NULL) { 3752 uu_avl_remove(tree, node); 3753 3754 switch (op) { 3755 case OP_SHARE: 3756 if (zfs_unshareall_bypath(node->un_zhp, 3757 node->un_mountp) != 0) 3758 ret = 1; 3759 break; 3760 3761 case OP_MOUNT: 3762 if (zfs_unmount(node->un_zhp, 3763 node->un_mountp, flags) != 0) 3764 ret = 1; 3765 break; 3766 } 3767 3768 zfs_close(node->un_zhp); 3769 free(node->un_mountp); 3770 free(node); 3771 } 3772 3773 uu_avl_walk_end(walk); 3774 uu_avl_destroy(tree); 3775 uu_avl_pool_destroy(pool); 3776 3777 if (op == OP_SHARE) { 3778 /* 3779 * Finally, unshare any volumes shared via iSCSI. 3780 */ 3781 zfs_handle_t **dslist = NULL; 3782 size_t i, count = 0; 3783 3784 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count, 3785 B_FALSE); 3786 3787 if (count != 0) { 3788 qsort(dslist, count, sizeof (void *), 3789 dataset_cmp); 3790 3791 for (i = 0; i < count; i++) { 3792 if (zfs_unshare_iscsi(dslist[i]) != 0) 3793 ret = 1; 3794 zfs_close(dslist[i]); 3795 } 3796 3797 free(dslist); 3798 } 3799 } 3800 } else { 3801 if (argc != 1) { 3802 if (argc == 0) 3803 (void) fprintf(stderr, 3804 gettext("missing filesystem argument\n")); 3805 else 3806 (void) fprintf(stderr, 3807 gettext("too many arguments\n")); 3808 usage(B_FALSE); 3809 } 3810 3811 /* 3812 * We have an argument, but it may be a full path or a ZFS 3813 * filesystem. Pass full paths off to unmount_path() (shared by 3814 * manual_unmount), otherwise open the filesystem and pass to 3815 * zfs_unmount(). 3816 */ 3817 if (argv[0][0] == '/') 3818 return (unshare_unmount_path(op, argv[0], 3819 flags, B_FALSE)); 3820 3821 types = ZFS_TYPE_FILESYSTEM; 3822 if (op == OP_SHARE) 3823 types |= ZFS_TYPE_VOLUME; 3824 3825 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) 3826 return (1); 3827 3828 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 3829 verify(zfs_prop_get(zhp, op == OP_SHARE ? 3830 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, 3831 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL, 3832 NULL, 0, B_FALSE) == 0); 3833 3834 switch (op) { 3835 case OP_SHARE: 3836 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3837 nfsiscsi_mnt_prop, 3838 sizeof (nfsiscsi_mnt_prop), 3839 NULL, NULL, 0, B_FALSE) == 0); 3840 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3841 sharesmb, sizeof (sharesmb), NULL, NULL, 3842 0, B_FALSE) == 0); 3843 3844 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 && 3845 strcmp(sharesmb, "off") == 0) { 3846 (void) fprintf(stderr, gettext("cannot " 3847 "unshare '%s': legacy share\n"), 3848 zfs_get_name(zhp)); 3849 (void) fprintf(stderr, gettext("use " 3850 "unshare(1M) to unshare this " 3851 "filesystem\n")); 3852 ret = 1; 3853 } else if (!zfs_is_shared(zhp)) { 3854 (void) fprintf(stderr, gettext("cannot " 3855 "unshare '%s': not currently " 3856 "shared\n"), zfs_get_name(zhp)); 3857 ret = 1; 3858 } else if (zfs_unshareall(zhp) != 0) { 3859 ret = 1; 3860 } 3861 break; 3862 3863 case OP_MOUNT: 3864 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) { 3865 (void) fprintf(stderr, gettext("cannot " 3866 "unmount '%s': legacy " 3867 "mountpoint\n"), zfs_get_name(zhp)); 3868 (void) fprintf(stderr, gettext("use " 3869 "umount(1M) to unmount this " 3870 "filesystem\n")); 3871 ret = 1; 3872 } else if (!zfs_is_mounted(zhp, NULL)) { 3873 (void) fprintf(stderr, gettext("cannot " 3874 "unmount '%s': not currently " 3875 "mounted\n"), 3876 zfs_get_name(zhp)); 3877 ret = 1; 3878 } else if (zfs_unmountall(zhp, flags) != 0) { 3879 ret = 1; 3880 } 3881 break; 3882 } 3883 } else { 3884 assert(op == OP_SHARE); 3885 3886 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, 3887 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), 3888 NULL, NULL, 0, B_FALSE) == 0); 3889 3890 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) { 3891 (void) fprintf(stderr, gettext("cannot unshare " 3892 "'%s': 'shareiscsi' property not set\n"), 3893 zfs_get_name(zhp)); 3894 (void) fprintf(stderr, gettext("set " 3895 "'shareiscsi' property or use " 3896 "iscsitadm(1M) to share this volume\n")); 3897 ret = 1; 3898 } else if (!zfs_is_shared_iscsi(zhp)) { 3899 (void) fprintf(stderr, gettext("cannot " 3900 "unshare '%s': not currently shared\n"), 3901 zfs_get_name(zhp)); 3902 ret = 1; 3903 } else if (zfs_unshare_iscsi(zhp) != 0) { 3904 ret = 1; 3905 } 3906 } 3907 3908 zfs_close(zhp); 3909 } 3910 3911 return (ret); 3912 } 3913 3914 /* 3915 * zfs unmount -a 3916 * zfs unmount filesystem 3917 * 3918 * Unmount all filesystems, or a specific ZFS filesystem. 3919 */ 3920 static int 3921 zfs_do_unmount(int argc, char **argv) 3922 { 3923 return (unshare_unmount(OP_MOUNT, argc, argv)); 3924 } 3925 3926 /* 3927 * zfs unshare -a 3928 * zfs unshare filesystem 3929 * 3930 * Unshare all filesystems, or a specific ZFS filesystem. 3931 */ 3932 static int 3933 zfs_do_unshare(int argc, char **argv) 3934 { 3935 return (unshare_unmount(OP_SHARE, argc, argv)); 3936 } 3937 3938 /* 3939 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is 3940 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'. 3941 */ 3942 static int 3943 manual_mount(int argc, char **argv) 3944 { 3945 zfs_handle_t *zhp; 3946 char mountpoint[ZFS_MAXPROPLEN]; 3947 char mntopts[MNT_LINE_MAX] = { '\0' }; 3948 int ret; 3949 int c; 3950 int flags = 0; 3951 char *dataset, *path; 3952 3953 /* check options */ 3954 while ((c = getopt(argc, argv, ":mo:O")) != -1) { 3955 switch (c) { 3956 case 'o': 3957 (void) strlcpy(mntopts, optarg, sizeof (mntopts)); 3958 break; 3959 case 'O': 3960 flags |= MS_OVERLAY; 3961 break; 3962 case 'm': 3963 flags |= MS_NOMNTTAB; 3964 break; 3965 case ':': 3966 (void) fprintf(stderr, gettext("missing argument for " 3967 "'%c' option\n"), optopt); 3968 usage(B_FALSE); 3969 break; 3970 case '?': 3971 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3972 optopt); 3973 (void) fprintf(stderr, gettext("usage: mount [-o opts] " 3974 "<path>\n")); 3975 return (2); 3976 } 3977 } 3978 3979 argc -= optind; 3980 argv += optind; 3981 3982 /* check that we only have two arguments */ 3983 if (argc != 2) { 3984 if (argc == 0) 3985 (void) fprintf(stderr, gettext("missing dataset " 3986 "argument\n")); 3987 else if (argc == 1) 3988 (void) fprintf(stderr, 3989 gettext("missing mountpoint argument\n")); 3990 else 3991 (void) fprintf(stderr, gettext("too many arguments\n")); 3992 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n"); 3993 return (2); 3994 } 3995 3996 dataset = argv[0]; 3997 path = argv[1]; 3998 3999 /* try to open the dataset */ 4000 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL) 4001 return (1); 4002 4003 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 4004 sizeof (mountpoint), NULL, NULL, 0, B_FALSE); 4005 4006 /* check for legacy mountpoint and complain appropriately */ 4007 ret = 0; 4008 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) { 4009 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS, 4010 NULL, 0, mntopts, sizeof (mntopts)) != 0) { 4011 (void) fprintf(stderr, gettext("mount failed: %s\n"), 4012 strerror(errno)); 4013 ret = 1; 4014 } 4015 } else { 4016 (void) fprintf(stderr, gettext("filesystem '%s' cannot be " 4017 "mounted using 'mount -F zfs'\n"), dataset); 4018 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' " 4019 "instead.\n"), path); 4020 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' " 4021 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n")); 4022 (void) fprintf(stderr, gettext("See zfs(1M) for more " 4023 "information.\n")); 4024 ret = 1; 4025 } 4026 4027 return (ret); 4028 } 4029 4030 /* 4031 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow 4032 * unmounts of non-legacy filesystems, as this is the dominant administrative 4033 * interface. 4034 */ 4035 static int 4036 manual_unmount(int argc, char **argv) 4037 { 4038 int flags = 0; 4039 int c; 4040 4041 /* check options */ 4042 while ((c = getopt(argc, argv, "f")) != -1) { 4043 switch (c) { 4044 case 'f': 4045 flags = MS_FORCE; 4046 break; 4047 case '?': 4048 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 4049 optopt); 4050 (void) fprintf(stderr, gettext("usage: unmount [-f] " 4051 "<path>\n")); 4052 return (2); 4053 } 4054 } 4055 4056 argc -= optind; 4057 argv += optind; 4058 4059 /* check arguments */ 4060 if (argc != 1) { 4061 if (argc == 0) 4062 (void) fprintf(stderr, gettext("missing path " 4063 "argument\n")); 4064 else 4065 (void) fprintf(stderr, gettext("too many arguments\n")); 4066 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n")); 4067 return (2); 4068 } 4069 4070 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE)); 4071 } 4072 4073 static int 4074 volcheck(zpool_handle_t *zhp, void *data) 4075 { 4076 boolean_t isinit = *((boolean_t *)data); 4077 4078 if (isinit) 4079 return (zpool_create_zvol_links(zhp)); 4080 else 4081 return (zpool_remove_zvol_links(zhp)); 4082 } 4083 4084 /* 4085 * Iterate over all pools in the system and either create or destroy /dev/zvol 4086 * links, depending on the value of 'isinit'. 4087 */ 4088 static int 4089 do_volcheck(boolean_t isinit) 4090 { 4091 return (zpool_iter(g_zfs, volcheck, &isinit) ? 1 : 0); 4092 } 4093 4094 static int 4095 find_command_idx(char *command, int *idx) 4096 { 4097 int i; 4098 4099 for (i = 0; i < NCOMMAND; i++) { 4100 if (command_table[i].name == NULL) 4101 continue; 4102 4103 if (strcmp(command, command_table[i].name) == 0) { 4104 *idx = i; 4105 return (0); 4106 } 4107 } 4108 return (1); 4109 } 4110 4111 int 4112 main(int argc, char **argv) 4113 { 4114 int ret; 4115 int i; 4116 char *progname; 4117 char *cmdname; 4118 4119 (void) setlocale(LC_ALL, ""); 4120 (void) textdomain(TEXT_DOMAIN); 4121 4122 opterr = 0; 4123 4124 if ((g_zfs = libzfs_init()) == NULL) { 4125 (void) fprintf(stderr, gettext("internal error: failed to " 4126 "initialize ZFS library\n")); 4127 return (1); 4128 } 4129 4130 zpool_set_history_str("zfs", argc, argv, history_str); 4131 verify(zpool_stage_history(g_zfs, history_str) == 0); 4132 4133 libzfs_print_on_error(g_zfs, B_TRUE); 4134 4135 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) { 4136 (void) fprintf(stderr, gettext("internal error: unable to " 4137 "open %s\n"), MNTTAB); 4138 return (1); 4139 } 4140 4141 /* 4142 * This command also doubles as the /etc/fs mount and unmount program. 4143 * Determine if we should take this behavior based on argv[0]. 4144 */ 4145 progname = basename(argv[0]); 4146 if (strcmp(progname, "mount") == 0) { 4147 ret = manual_mount(argc, argv); 4148 } else if (strcmp(progname, "umount") == 0) { 4149 ret = manual_unmount(argc, argv); 4150 } else { 4151 /* 4152 * Make sure the user has specified some command. 4153 */ 4154 if (argc < 2) { 4155 (void) fprintf(stderr, gettext("missing command\n")); 4156 usage(B_FALSE); 4157 } 4158 4159 cmdname = argv[1]; 4160 4161 /* 4162 * The 'umount' command is an alias for 'unmount' 4163 */ 4164 if (strcmp(cmdname, "umount") == 0) 4165 cmdname = "unmount"; 4166 4167 /* 4168 * The 'recv' command is an alias for 'receive' 4169 */ 4170 if (strcmp(cmdname, "recv") == 0) 4171 cmdname = "receive"; 4172 4173 /* 4174 * Special case '-?' 4175 */ 4176 if (strcmp(cmdname, "-?") == 0) 4177 usage(B_TRUE); 4178 4179 /* 4180 * 'volinit' and 'volfini' do not appear in the usage message, 4181 * so we have to special case them here. 4182 */ 4183 if (strcmp(cmdname, "volinit") == 0) 4184 return (do_volcheck(B_TRUE)); 4185 else if (strcmp(cmdname, "volfini") == 0) 4186 return (do_volcheck(B_FALSE)); 4187 4188 /* 4189 * Run the appropriate command. 4190 */ 4191 if (find_command_idx(cmdname, &i) == 0) { 4192 current_command = &command_table[i]; 4193 ret = command_table[i].func(argc - 1, argv + 1); 4194 } else if (strchr(cmdname, '=') != NULL) { 4195 verify(find_command_idx("set", &i) == 0); 4196 current_command = &command_table[i]; 4197 ret = command_table[i].func(argc, argv); 4198 } else { 4199 (void) fprintf(stderr, gettext("unrecognized " 4200 "command '%s'\n"), cmdname); 4201 usage(B_FALSE); 4202 } 4203 } 4204 4205 (void) fclose(mnttab_file); 4206 4207 libzfs_fini(g_zfs); 4208 4209 /* 4210 * The 'ZFS_ABORT' environment variable causes us to dump core on exit 4211 * for the purposes of running ::findleaks. 4212 */ 4213 if (getenv("ZFS_ABORT") != NULL) { 4214 (void) printf("dumping core by request\n"); 4215 abort(); 4216 } 4217 4218 return (ret); 4219 } 4220