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 2010 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 <grp.h> 43 #include <pwd.h> 44 #include <sys/mkdev.h> 45 #include <sys/mntent.h> 46 #include <sys/mnttab.h> 47 #include <sys/mount.h> 48 #include <sys/stat.h> 49 #include <sys/fs/zfs.h> 50 51 #include <libzfs.h> 52 #include <libuutil.h> 53 54 #include "zfs_iter.h" 55 #include "zfs_util.h" 56 57 libzfs_handle_t *g_zfs; 58 59 static FILE *mnttab_file; 60 static char history_str[HIS_MAX_RECORD_LEN]; 61 const char *pypath = "/usr/lib/zfs/pyzfs.py"; 62 63 static int zfs_do_clone(int argc, char **argv); 64 static int zfs_do_create(int argc, char **argv); 65 static int zfs_do_destroy(int argc, char **argv); 66 static int zfs_do_get(int argc, char **argv); 67 static int zfs_do_inherit(int argc, char **argv); 68 static int zfs_do_list(int argc, char **argv); 69 static int zfs_do_mount(int argc, char **argv); 70 static int zfs_do_rename(int argc, char **argv); 71 static int zfs_do_rollback(int argc, char **argv); 72 static int zfs_do_set(int argc, char **argv); 73 static int zfs_do_upgrade(int argc, char **argv); 74 static int zfs_do_snapshot(int argc, char **argv); 75 static int zfs_do_unmount(int argc, char **argv); 76 static int zfs_do_share(int argc, char **argv); 77 static int zfs_do_unshare(int argc, char **argv); 78 static int zfs_do_send(int argc, char **argv); 79 static int zfs_do_receive(int argc, char **argv); 80 static int zfs_do_promote(int argc, char **argv); 81 static int zfs_do_userspace(int argc, char **argv); 82 static int zfs_do_python(int argc, char **argv); 83 static int zfs_do_hold(int argc, char **argv); 84 static int zfs_do_release(int argc, char **argv); 85 86 /* 87 * Enable a reasonable set of defaults for libumem debugging on DEBUG builds. 88 */ 89 90 #ifdef DEBUG 91 const char * 92 _umem_debug_init(void) 93 { 94 return ("default,verbose"); /* $UMEM_DEBUG setting */ 95 } 96 97 const char * 98 _umem_logging_init(void) 99 { 100 return ("fail,contents"); /* $UMEM_LOGGING setting */ 101 } 102 #endif 103 104 typedef enum { 105 HELP_CLONE, 106 HELP_CREATE, 107 HELP_DESTROY, 108 HELP_GET, 109 HELP_INHERIT, 110 HELP_UPGRADE, 111 HELP_LIST, 112 HELP_MOUNT, 113 HELP_PROMOTE, 114 HELP_RECEIVE, 115 HELP_RENAME, 116 HELP_ROLLBACK, 117 HELP_SEND, 118 HELP_SET, 119 HELP_SHARE, 120 HELP_SNAPSHOT, 121 HELP_UNMOUNT, 122 HELP_UNSHARE, 123 HELP_ALLOW, 124 HELP_UNALLOW, 125 HELP_USERSPACE, 126 HELP_GROUPSPACE, 127 HELP_HOLD, 128 HELP_HOLDS, 129 HELP_RELEASE 130 } zfs_help_t; 131 132 typedef struct zfs_command { 133 const char *name; 134 int (*func)(int argc, char **argv); 135 zfs_help_t usage; 136 } zfs_command_t; 137 138 /* 139 * Master command table. Each ZFS command has a name, associated function, and 140 * usage message. The usage messages need to be internationalized, so we have 141 * to have a function to return the usage message based on a command index. 142 * 143 * These commands are organized according to how they are displayed in the usage 144 * message. An empty command (one with a NULL name) indicates an empty line in 145 * the generic usage message. 146 */ 147 static zfs_command_t command_table[] = { 148 { "create", zfs_do_create, HELP_CREATE }, 149 { "destroy", zfs_do_destroy, HELP_DESTROY }, 150 { NULL }, 151 { "snapshot", zfs_do_snapshot, HELP_SNAPSHOT }, 152 { "rollback", zfs_do_rollback, HELP_ROLLBACK }, 153 { "clone", zfs_do_clone, HELP_CLONE }, 154 { "promote", zfs_do_promote, HELP_PROMOTE }, 155 { "rename", zfs_do_rename, HELP_RENAME }, 156 { NULL }, 157 { "list", zfs_do_list, HELP_LIST }, 158 { NULL }, 159 { "set", zfs_do_set, HELP_SET }, 160 { "get", zfs_do_get, HELP_GET }, 161 { "inherit", zfs_do_inherit, HELP_INHERIT }, 162 { "upgrade", zfs_do_upgrade, HELP_UPGRADE }, 163 { "userspace", zfs_do_userspace, HELP_USERSPACE }, 164 { "groupspace", zfs_do_userspace, HELP_GROUPSPACE }, 165 { NULL }, 166 { "mount", zfs_do_mount, HELP_MOUNT }, 167 { "unmount", zfs_do_unmount, HELP_UNMOUNT }, 168 { "share", zfs_do_share, HELP_SHARE }, 169 { "unshare", zfs_do_unshare, HELP_UNSHARE }, 170 { NULL }, 171 { "send", zfs_do_send, HELP_SEND }, 172 { "receive", zfs_do_receive, HELP_RECEIVE }, 173 { NULL }, 174 { "allow", zfs_do_python, HELP_ALLOW }, 175 { NULL }, 176 { "unallow", zfs_do_python, HELP_UNALLOW }, 177 { NULL }, 178 { "hold", zfs_do_hold, HELP_HOLD }, 179 { "holds", zfs_do_python, HELP_HOLDS }, 180 { "release", zfs_do_release, HELP_RELEASE }, 181 }; 182 183 #define NCOMMAND (sizeof (command_table) / sizeof (command_table[0])) 184 185 zfs_command_t *current_command; 186 187 static const char * 188 get_usage(zfs_help_t idx) 189 { 190 switch (idx) { 191 case HELP_CLONE: 192 return (gettext("\tclone [-p] [-o property=value] ... " 193 "<snapshot> <filesystem|volume>\n")); 194 case HELP_CREATE: 195 return (gettext("\tcreate [-p] [-o property=value] ... " 196 "<filesystem>\n" 197 "\tcreate [-ps] [-b blocksize] [-o property=value] ... " 198 "-V <size> <volume>\n")); 199 case HELP_DESTROY: 200 return (gettext("\tdestroy [-rRf] <filesystem|volume>\n" 201 "\tdestroy [-rRd] <snapshot>\n")); 202 case HELP_GET: 203 return (gettext("\tget [-rHp] [-d max] " 204 "[-o \"all\" | field[,...]] [-s source[,...]]\n" 205 "\t <\"all\" | property[,...]> " 206 "[filesystem|volume|snapshot] ...\n")); 207 case HELP_INHERIT: 208 return (gettext("\tinherit [-rS] <property> " 209 "<filesystem|volume|snapshot> ...\n")); 210 case HELP_UPGRADE: 211 return (gettext("\tupgrade [-v]\n" 212 "\tupgrade [-r] [-V version] <-a | filesystem ...>\n")); 213 case HELP_LIST: 214 return (gettext("\tlist [-rH][-d max] " 215 "[-o property[,...]] [-t type[,...]] [-s property] ...\n" 216 "\t [-S property] ... " 217 "[filesystem|volume|snapshot] ...\n")); 218 case HELP_MOUNT: 219 return (gettext("\tmount\n" 220 "\tmount [-vO] [-o opts] <-a | filesystem>\n")); 221 case HELP_PROMOTE: 222 return (gettext("\tpromote <clone-filesystem>\n")); 223 case HELP_RECEIVE: 224 return (gettext("\treceive [-vnF] <filesystem|volume|" 225 "snapshot>\n" 226 "\treceive [-vnF] -d <filesystem>\n")); 227 case HELP_RENAME: 228 return (gettext("\trename <filesystem|volume|snapshot> " 229 "<filesystem|volume|snapshot>\n" 230 "\trename -p <filesystem|volume> <filesystem|volume>\n" 231 "\trename -r <snapshot> <snapshot>")); 232 case HELP_ROLLBACK: 233 return (gettext("\trollback [-rRf] <snapshot>\n")); 234 case HELP_SEND: 235 return (gettext("\tsend [-RDp] [-[iI] snapshot] <snapshot>\n")); 236 case HELP_SET: 237 return (gettext("\tset <property=value> " 238 "<filesystem|volume|snapshot> ...\n")); 239 case HELP_SHARE: 240 return (gettext("\tshare <-a | filesystem>\n")); 241 case HELP_SNAPSHOT: 242 return (gettext("\tsnapshot [-r] [-o property=value] ... " 243 "<filesystem@snapname|volume@snapname>\n")); 244 case HELP_UNMOUNT: 245 return (gettext("\tunmount [-f] " 246 "<-a | filesystem|mountpoint>\n")); 247 case HELP_UNSHARE: 248 return (gettext("\tunshare " 249 "<-a | filesystem|mountpoint>\n")); 250 case HELP_ALLOW: 251 return (gettext("\tallow <filesystem|volume>\n" 252 "\tallow [-ldug] " 253 "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n" 254 "\t <filesystem|volume>\n" 255 "\tallow [-ld] -e <perm|@setname>[,...] " 256 "<filesystem|volume>\n" 257 "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n" 258 "\tallow -s @setname <perm|@setname>[,...] " 259 "<filesystem|volume>\n")); 260 case HELP_UNALLOW: 261 return (gettext("\tunallow [-rldug] " 262 "<\"everyone\"|user|group>[,...]\n" 263 "\t [<perm|@setname>[,...]] <filesystem|volume>\n" 264 "\tunallow [-rld] -e [<perm|@setname>[,...]] " 265 "<filesystem|volume>\n" 266 "\tunallow [-r] -c [<perm|@setname>[,...]] " 267 "<filesystem|volume>\n" 268 "\tunallow [-r] -s @setname [<perm|@setname>[,...]] " 269 "<filesystem|volume>\n")); 270 case HELP_USERSPACE: 271 return (gettext("\tuserspace [-hniHp] [-o field[,...]] " 272 "[-sS field] ... [-t type[,...]]\n" 273 "\t <filesystem|snapshot>\n")); 274 case HELP_GROUPSPACE: 275 return (gettext("\tgroupspace [-hniHpU] [-o field[,...]] " 276 "[-sS field] ... [-t type[,...]]\n" 277 "\t <filesystem|snapshot>\n")); 278 case HELP_HOLD: 279 return (gettext("\thold [-r] <tag> <snapshot> ...\n")); 280 case HELP_HOLDS: 281 return (gettext("\tholds [-r] <snapshot> ...\n")); 282 case HELP_RELEASE: 283 return (gettext("\trelease [-r] <tag> <snapshot> ...\n")); 284 } 285 286 abort(); 287 /* NOTREACHED */ 288 } 289 290 /* 291 * Utility function to guarantee malloc() success. 292 */ 293 void * 294 safe_malloc(size_t size) 295 { 296 void *data; 297 298 if ((data = calloc(1, size)) == NULL) { 299 (void) fprintf(stderr, "internal error: out of memory\n"); 300 exit(1); 301 } 302 303 return (data); 304 } 305 306 /* 307 * Callback routine that will print out information for each of 308 * the properties. 309 */ 310 static int 311 usage_prop_cb(int prop, void *cb) 312 { 313 FILE *fp = cb; 314 315 (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop)); 316 317 if (zfs_prop_readonly(prop)) 318 (void) fprintf(fp, " NO "); 319 else 320 (void) fprintf(fp, "YES "); 321 322 if (zfs_prop_inheritable(prop)) 323 (void) fprintf(fp, " YES "); 324 else 325 (void) fprintf(fp, " NO "); 326 327 if (zfs_prop_values(prop) == NULL) 328 (void) fprintf(fp, "-\n"); 329 else 330 (void) fprintf(fp, "%s\n", zfs_prop_values(prop)); 331 332 return (ZPROP_CONT); 333 } 334 335 /* 336 * Display usage message. If we're inside a command, display only the usage for 337 * that command. Otherwise, iterate over the entire command table and display 338 * a complete usage message. 339 */ 340 static void 341 usage(boolean_t requested) 342 { 343 int i; 344 boolean_t show_properties = B_FALSE; 345 FILE *fp = requested ? stdout : stderr; 346 347 if (current_command == NULL) { 348 349 (void) fprintf(fp, gettext("usage: zfs command args ...\n")); 350 (void) fprintf(fp, 351 gettext("where 'command' is one of the following:\n\n")); 352 353 for (i = 0; i < NCOMMAND; i++) { 354 if (command_table[i].name == NULL) 355 (void) fprintf(fp, "\n"); 356 else 357 (void) fprintf(fp, "%s", 358 get_usage(command_table[i].usage)); 359 } 360 361 (void) fprintf(fp, gettext("\nEach dataset is of the form: " 362 "pool/[dataset/]*dataset[@name]\n")); 363 } else { 364 (void) fprintf(fp, gettext("usage:\n")); 365 (void) fprintf(fp, "%s", get_usage(current_command->usage)); 366 } 367 368 if (current_command != NULL && 369 (strcmp(current_command->name, "set") == 0 || 370 strcmp(current_command->name, "get") == 0 || 371 strcmp(current_command->name, "inherit") == 0 || 372 strcmp(current_command->name, "list") == 0)) 373 show_properties = B_TRUE; 374 375 if (show_properties) { 376 (void) fprintf(fp, 377 gettext("\nThe following properties are supported:\n")); 378 379 (void) fprintf(fp, "\n\t%-14s %s %s %s\n\n", 380 "PROPERTY", "EDIT", "INHERIT", "VALUES"); 381 382 /* Iterate over all properties */ 383 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE, 384 ZFS_TYPE_DATASET); 385 386 (void) fprintf(fp, "\t%-15s ", "userused@..."); 387 (void) fprintf(fp, " NO NO <size>\n"); 388 (void) fprintf(fp, "\t%-15s ", "groupused@..."); 389 (void) fprintf(fp, " NO NO <size>\n"); 390 (void) fprintf(fp, "\t%-15s ", "userquota@..."); 391 (void) fprintf(fp, "YES NO <size> | none\n"); 392 (void) fprintf(fp, "\t%-15s ", "groupquota@..."); 393 (void) fprintf(fp, "YES NO <size> | none\n"); 394 395 (void) fprintf(fp, gettext("\nSizes are specified in bytes " 396 "with standard units such as K, M, G, etc.\n")); 397 (void) fprintf(fp, gettext("\nUser-defined properties can " 398 "be specified by using a name containing a colon (:).\n")); 399 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ " 400 "properties must be appended with\n" 401 "a user or group specifier of one of these forms:\n" 402 " POSIX name (eg: \"matt\")\n" 403 " POSIX id (eg: \"126829\")\n" 404 " SMB name@domain (eg: \"matt@sun\")\n" 405 " SMB SID (eg: \"S-1-234-567-89\")\n")); 406 } else { 407 (void) fprintf(fp, 408 gettext("\nFor the property list, run: %s\n"), 409 "zfs set|get"); 410 (void) fprintf(fp, 411 gettext("\nFor the delegated permission list, run: %s\n"), 412 "zfs allow|unallow"); 413 } 414 415 /* 416 * See comments at end of main(). 417 */ 418 if (getenv("ZFS_ABORT") != NULL) { 419 (void) printf("dumping core by request\n"); 420 abort(); 421 } 422 423 exit(requested ? 0 : 2); 424 } 425 426 static int 427 parseprop(nvlist_t *props) 428 { 429 char *propname = optarg; 430 char *propval, *strval; 431 432 if ((propval = strchr(propname, '=')) == NULL) { 433 (void) fprintf(stderr, gettext("missing " 434 "'=' for -o option\n")); 435 return (-1); 436 } 437 *propval = '\0'; 438 propval++; 439 if (nvlist_lookup_string(props, propname, &strval) == 0) { 440 (void) fprintf(stderr, gettext("property '%s' " 441 "specified multiple times\n"), propname); 442 return (-1); 443 } 444 if (nvlist_add_string(props, propname, propval) != 0) { 445 (void) fprintf(stderr, gettext("internal " 446 "error: out of memory\n")); 447 return (-1); 448 } 449 return (0); 450 } 451 452 static int 453 parse_depth(char *opt, int *flags) 454 { 455 char *tmp; 456 int depth; 457 458 depth = (int)strtol(opt, &tmp, 0); 459 if (*tmp) { 460 (void) fprintf(stderr, 461 gettext("%s is not an integer\n"), optarg); 462 usage(B_FALSE); 463 } 464 if (depth < 0) { 465 (void) fprintf(stderr, 466 gettext("Depth can not be negative.\n")); 467 usage(B_FALSE); 468 } 469 *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE); 470 return (depth); 471 } 472 473 /* 474 * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol> 475 * 476 * Given an existing dataset, create a writable copy whose initial contents 477 * are the same as the source. The newly created dataset maintains a 478 * dependency on the original; the original cannot be destroyed so long as 479 * the clone exists. 480 * 481 * The '-p' flag creates all the non-existing ancestors of the target first. 482 */ 483 static int 484 zfs_do_clone(int argc, char **argv) 485 { 486 zfs_handle_t *zhp = NULL; 487 boolean_t parents = B_FALSE; 488 nvlist_t *props; 489 int ret; 490 int c; 491 492 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 493 (void) fprintf(stderr, gettext("internal error: " 494 "out of memory\n")); 495 return (1); 496 } 497 498 /* check options */ 499 while ((c = getopt(argc, argv, "o:p")) != -1) { 500 switch (c) { 501 case 'o': 502 if (parseprop(props)) 503 return (1); 504 break; 505 case 'p': 506 parents = B_TRUE; 507 break; 508 case '?': 509 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 510 optopt); 511 goto usage; 512 } 513 } 514 515 argc -= optind; 516 argv += optind; 517 518 /* check number of arguments */ 519 if (argc < 1) { 520 (void) fprintf(stderr, gettext("missing source dataset " 521 "argument\n")); 522 goto usage; 523 } 524 if (argc < 2) { 525 (void) fprintf(stderr, gettext("missing target dataset " 526 "argument\n")); 527 goto usage; 528 } 529 if (argc > 2) { 530 (void) fprintf(stderr, gettext("too many arguments\n")); 531 goto usage; 532 } 533 534 /* open the source dataset */ 535 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 536 return (1); 537 538 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM | 539 ZFS_TYPE_VOLUME)) { 540 /* 541 * Now create the ancestors of the target dataset. If the 542 * target already exists and '-p' option was used we should not 543 * complain. 544 */ 545 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | 546 ZFS_TYPE_VOLUME)) 547 return (0); 548 if (zfs_create_ancestors(g_zfs, argv[1]) != 0) 549 return (1); 550 } 551 552 /* pass to libzfs */ 553 ret = zfs_clone(zhp, argv[1], props); 554 555 /* create the mountpoint if necessary */ 556 if (ret == 0) { 557 zfs_handle_t *clone; 558 559 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET); 560 if (clone != NULL) { 561 if ((ret = zfs_mount(clone, NULL, 0)) == 0) 562 ret = zfs_share(clone); 563 zfs_close(clone); 564 } 565 } 566 567 zfs_close(zhp); 568 nvlist_free(props); 569 570 return (!!ret); 571 572 usage: 573 if (zhp) 574 zfs_close(zhp); 575 nvlist_free(props); 576 usage(B_FALSE); 577 return (-1); 578 } 579 580 /* 581 * zfs create [-p] [-o prop=value] ... fs 582 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size 583 * 584 * Create a new dataset. This command can be used to create filesystems 585 * and volumes. Snapshot creation is handled by 'zfs snapshot'. 586 * For volumes, the user must specify a size to be used. 587 * 588 * The '-s' flag applies only to volumes, and indicates that we should not try 589 * to set the reservation for this volume. By default we set a reservation 590 * equal to the size for any volume. For pools with SPA_VERSION >= 591 * SPA_VERSION_REFRESERVATION, we set a refreservation instead. 592 * 593 * The '-p' flag creates all the non-existing ancestors of the target first. 594 */ 595 static int 596 zfs_do_create(int argc, char **argv) 597 { 598 zfs_type_t type = ZFS_TYPE_FILESYSTEM; 599 zfs_handle_t *zhp = NULL; 600 uint64_t volsize; 601 int c; 602 boolean_t noreserve = B_FALSE; 603 boolean_t bflag = B_FALSE; 604 boolean_t parents = B_FALSE; 605 int ret = 1; 606 nvlist_t *props; 607 uint64_t intval; 608 int canmount; 609 610 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 611 (void) fprintf(stderr, gettext("internal error: " 612 "out of memory\n")); 613 return (1); 614 } 615 616 /* check options */ 617 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) { 618 switch (c) { 619 case 'V': 620 type = ZFS_TYPE_VOLUME; 621 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 622 (void) fprintf(stderr, gettext("bad volume " 623 "size '%s': %s\n"), optarg, 624 libzfs_error_description(g_zfs)); 625 goto error; 626 } 627 628 if (nvlist_add_uint64(props, 629 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 630 intval) != 0) { 631 (void) fprintf(stderr, gettext("internal " 632 "error: out of memory\n")); 633 goto error; 634 } 635 volsize = intval; 636 break; 637 case 'p': 638 parents = B_TRUE; 639 break; 640 case 'b': 641 bflag = B_TRUE; 642 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 643 (void) fprintf(stderr, gettext("bad volume " 644 "block size '%s': %s\n"), optarg, 645 libzfs_error_description(g_zfs)); 646 goto error; 647 } 648 649 if (nvlist_add_uint64(props, 650 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 651 intval) != 0) { 652 (void) fprintf(stderr, gettext("internal " 653 "error: out of memory\n")); 654 goto error; 655 } 656 break; 657 case 'o': 658 if (parseprop(props)) 659 goto error; 660 break; 661 case 's': 662 noreserve = B_TRUE; 663 break; 664 case ':': 665 (void) fprintf(stderr, gettext("missing size " 666 "argument\n")); 667 goto badusage; 668 break; 669 case '?': 670 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 671 optopt); 672 goto badusage; 673 } 674 } 675 676 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) { 677 (void) fprintf(stderr, gettext("'-s' and '-b' can only be " 678 "used when creating a volume\n")); 679 goto badusage; 680 } 681 682 argc -= optind; 683 argv += optind; 684 685 /* check number of arguments */ 686 if (argc == 0) { 687 (void) fprintf(stderr, gettext("missing %s argument\n"), 688 zfs_type_to_name(type)); 689 goto badusage; 690 } 691 if (argc > 1) { 692 (void) fprintf(stderr, gettext("too many arguments\n")); 693 goto badusage; 694 } 695 696 if (type == ZFS_TYPE_VOLUME && !noreserve) { 697 zpool_handle_t *zpool_handle; 698 uint64_t spa_version; 699 char *p; 700 zfs_prop_t resv_prop; 701 char *strval; 702 703 if (p = strchr(argv[0], '/')) 704 *p = '\0'; 705 zpool_handle = zpool_open(g_zfs, argv[0]); 706 if (p != NULL) 707 *p = '/'; 708 if (zpool_handle == NULL) 709 goto error; 710 spa_version = zpool_get_prop_int(zpool_handle, 711 ZPOOL_PROP_VERSION, NULL); 712 zpool_close(zpool_handle); 713 if (spa_version >= SPA_VERSION_REFRESERVATION) 714 resv_prop = ZFS_PROP_REFRESERVATION; 715 else 716 resv_prop = ZFS_PROP_RESERVATION; 717 volsize = zvol_volsize_to_reservation(volsize, props); 718 719 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop), 720 &strval) != 0) { 721 if (nvlist_add_uint64(props, 722 zfs_prop_to_name(resv_prop), volsize) != 0) { 723 (void) fprintf(stderr, gettext("internal " 724 "error: out of memory\n")); 725 nvlist_free(props); 726 return (1); 727 } 728 } 729 } 730 731 if (parents && zfs_name_valid(argv[0], type)) { 732 /* 733 * Now create the ancestors of target dataset. If the target 734 * already exists and '-p' option was used we should not 735 * complain. 736 */ 737 if (zfs_dataset_exists(g_zfs, argv[0], type)) { 738 ret = 0; 739 goto error; 740 } 741 if (zfs_create_ancestors(g_zfs, argv[0]) != 0) 742 goto error; 743 } 744 745 /* pass to libzfs */ 746 if (zfs_create(g_zfs, argv[0], type, props) != 0) 747 goto error; 748 749 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 750 goto error; 751 /* 752 * if the user doesn't want the dataset automatically mounted, 753 * then skip the mount/share step 754 */ 755 756 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 757 758 /* 759 * Mount and/or share the new filesystem as appropriate. We provide a 760 * verbose error message to let the user know that their filesystem was 761 * in fact created, even if we failed to mount or share it. 762 */ 763 ret = 0; 764 if (canmount == ZFS_CANMOUNT_ON) { 765 if (zfs_mount(zhp, NULL, 0) != 0) { 766 (void) fprintf(stderr, gettext("filesystem " 767 "successfully created, but not mounted\n")); 768 ret = 1; 769 } else if (zfs_share(zhp) != 0) { 770 (void) fprintf(stderr, gettext("filesystem " 771 "successfully created, but not shared\n")); 772 ret = 1; 773 } 774 } 775 776 error: 777 if (zhp) 778 zfs_close(zhp); 779 nvlist_free(props); 780 return (ret); 781 badusage: 782 nvlist_free(props); 783 usage(B_FALSE); 784 return (2); 785 } 786 787 /* 788 * zfs destroy [-rRf] <fs, vol> 789 * zfs destroy [-rRd] <snap> 790 * 791 * -r Recursively destroy all children 792 * -R Recursively destroy all dependents, including clones 793 * -f Force unmounting of any dependents 794 * -d If we can't destroy now, mark for deferred destruction 795 * 796 * Destroys the given dataset. By default, it will unmount any filesystems, 797 * and refuse to destroy a dataset that has any dependents. A dependent can 798 * either be a child, or a clone of a child. 799 */ 800 typedef struct destroy_cbdata { 801 boolean_t cb_first; 802 int cb_force; 803 int cb_recurse; 804 int cb_error; 805 int cb_needforce; 806 int cb_doclones; 807 boolean_t cb_closezhp; 808 zfs_handle_t *cb_target; 809 char *cb_snapname; 810 boolean_t cb_defer_destroy; 811 } destroy_cbdata_t; 812 813 /* 814 * Check for any dependents based on the '-r' or '-R' flags. 815 */ 816 static int 817 destroy_check_dependent(zfs_handle_t *zhp, void *data) 818 { 819 destroy_cbdata_t *cbp = data; 820 const char *tname = zfs_get_name(cbp->cb_target); 821 const char *name = zfs_get_name(zhp); 822 823 if (strncmp(tname, name, strlen(tname)) == 0 && 824 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) { 825 /* 826 * This is a direct descendant, not a clone somewhere else in 827 * the hierarchy. 828 */ 829 if (cbp->cb_recurse) 830 goto out; 831 832 if (cbp->cb_first) { 833 (void) fprintf(stderr, gettext("cannot destroy '%s': " 834 "%s has children\n"), 835 zfs_get_name(cbp->cb_target), 836 zfs_type_to_name(zfs_get_type(cbp->cb_target))); 837 (void) fprintf(stderr, gettext("use '-r' to destroy " 838 "the following datasets:\n")); 839 cbp->cb_first = B_FALSE; 840 cbp->cb_error = 1; 841 } 842 843 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 844 } else { 845 /* 846 * This is a clone. We only want to report this if the '-r' 847 * wasn't specified, or the target is a snapshot. 848 */ 849 if (!cbp->cb_recurse && 850 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT) 851 goto out; 852 853 if (cbp->cb_first) { 854 (void) fprintf(stderr, gettext("cannot destroy '%s': " 855 "%s has dependent clones\n"), 856 zfs_get_name(cbp->cb_target), 857 zfs_type_to_name(zfs_get_type(cbp->cb_target))); 858 (void) fprintf(stderr, gettext("use '-R' to destroy " 859 "the following datasets:\n")); 860 cbp->cb_first = B_FALSE; 861 cbp->cb_error = 1; 862 } 863 864 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 865 } 866 867 out: 868 zfs_close(zhp); 869 return (0); 870 } 871 872 static int 873 destroy_callback(zfs_handle_t *zhp, void *data) 874 { 875 destroy_cbdata_t *cbp = data; 876 877 /* 878 * Ignore pools (which we've already flagged as an error before getting 879 * here). 880 */ 881 if (strchr(zfs_get_name(zhp), '/') == NULL && 882 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 883 zfs_close(zhp); 884 return (0); 885 } 886 887 /* 888 * Bail out on the first error. 889 */ 890 if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 || 891 zfs_destroy(zhp, cbp->cb_defer_destroy) != 0) { 892 zfs_close(zhp); 893 return (-1); 894 } 895 896 zfs_close(zhp); 897 return (0); 898 } 899 900 static int 901 destroy_snap_clones(zfs_handle_t *zhp, void *arg) 902 { 903 destroy_cbdata_t *cbp = arg; 904 char thissnap[MAXPATHLEN]; 905 zfs_handle_t *szhp; 906 boolean_t closezhp = cbp->cb_closezhp; 907 int rv; 908 909 (void) snprintf(thissnap, sizeof (thissnap), 910 "%s@%s", zfs_get_name(zhp), cbp->cb_snapname); 911 912 libzfs_print_on_error(g_zfs, B_FALSE); 913 szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT); 914 libzfs_print_on_error(g_zfs, B_TRUE); 915 if (szhp) { 916 /* 917 * Destroy any clones of this snapshot 918 */ 919 if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback, 920 cbp) != 0) { 921 zfs_close(szhp); 922 if (closezhp) 923 zfs_close(zhp); 924 return (-1); 925 } 926 zfs_close(szhp); 927 } 928 929 cbp->cb_closezhp = B_TRUE; 930 rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg); 931 if (closezhp) 932 zfs_close(zhp); 933 return (rv); 934 } 935 936 static int 937 zfs_do_destroy(int argc, char **argv) 938 { 939 destroy_cbdata_t cb = { 0 }; 940 int c; 941 zfs_handle_t *zhp; 942 char *cp; 943 zfs_type_t type = ZFS_TYPE_DATASET; 944 945 /* check options */ 946 while ((c = getopt(argc, argv, "dfrR")) != -1) { 947 switch (c) { 948 case 'd': 949 cb.cb_defer_destroy = B_TRUE; 950 type = ZFS_TYPE_SNAPSHOT; 951 break; 952 case 'f': 953 cb.cb_force = 1; 954 break; 955 case 'r': 956 cb.cb_recurse = 1; 957 break; 958 case 'R': 959 cb.cb_recurse = 1; 960 cb.cb_doclones = 1; 961 break; 962 case '?': 963 default: 964 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 965 optopt); 966 usage(B_FALSE); 967 } 968 } 969 970 argc -= optind; 971 argv += optind; 972 973 /* check number of arguments */ 974 if (argc == 0) { 975 (void) fprintf(stderr, gettext("missing path argument\n")); 976 usage(B_FALSE); 977 } 978 if (argc > 1) { 979 (void) fprintf(stderr, gettext("too many arguments\n")); 980 usage(B_FALSE); 981 } 982 983 /* 984 * If we are doing recursive destroy of a snapshot, then the 985 * named snapshot may not exist. Go straight to libzfs. 986 */ 987 if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) { 988 int ret; 989 990 *cp = '\0'; 991 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 992 return (1); 993 *cp = '@'; 994 cp++; 995 996 if (cb.cb_doclones) { 997 boolean_t defer = cb.cb_defer_destroy; 998 999 /* 1000 * Temporarily ignore the defer_destroy setting since 1001 * it's not supported for clones. 1002 */ 1003 cb.cb_defer_destroy = B_FALSE; 1004 cb.cb_snapname = cp; 1005 if (destroy_snap_clones(zhp, &cb) != 0) { 1006 zfs_close(zhp); 1007 return (1); 1008 } 1009 cb.cb_defer_destroy = defer; 1010 } 1011 1012 ret = zfs_destroy_snaps(zhp, cp, cb.cb_defer_destroy); 1013 zfs_close(zhp); 1014 if (ret) { 1015 (void) fprintf(stderr, 1016 gettext("no snapshots destroyed\n")); 1017 } 1018 return (ret != 0); 1019 } 1020 1021 /* Open the given dataset */ 1022 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL) 1023 return (1); 1024 1025 cb.cb_target = zhp; 1026 1027 /* 1028 * Perform an explicit check for pools before going any further. 1029 */ 1030 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL && 1031 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 1032 (void) fprintf(stderr, gettext("cannot destroy '%s': " 1033 "operation does not apply to pools\n"), 1034 zfs_get_name(zhp)); 1035 (void) fprintf(stderr, gettext("use 'zfs destroy -r " 1036 "%s' to destroy all datasets in the pool\n"), 1037 zfs_get_name(zhp)); 1038 (void) fprintf(stderr, gettext("use 'zpool destroy %s' " 1039 "to destroy the pool itself\n"), zfs_get_name(zhp)); 1040 zfs_close(zhp); 1041 return (1); 1042 } 1043 1044 /* 1045 * Check for any dependents and/or clones. 1046 */ 1047 cb.cb_first = B_TRUE; 1048 if (!cb.cb_doclones && !cb.cb_defer_destroy && 1049 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent, 1050 &cb) != 0) { 1051 zfs_close(zhp); 1052 return (1); 1053 } 1054 1055 if (cb.cb_error || (!cb.cb_defer_destroy && 1056 (zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0))) { 1057 zfs_close(zhp); 1058 return (1); 1059 } 1060 1061 /* 1062 * Do the real thing. The callback will close the handle regardless of 1063 * whether it succeeds or not. 1064 */ 1065 1066 if (destroy_callback(zhp, &cb) != 0) 1067 return (1); 1068 1069 return (0); 1070 } 1071 1072 static boolean_t 1073 is_recvd_column(zprop_get_cbdata_t *cbp) 1074 { 1075 int i; 1076 zfs_get_column_t col; 1077 1078 for (i = 0; i < ZFS_GET_NCOLS && 1079 (col = cbp->cb_columns[i]) != GET_COL_NONE; i++) 1080 if (col == GET_COL_RECVD) 1081 return (B_TRUE); 1082 return (B_FALSE); 1083 } 1084 1085 /* 1086 * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...] 1087 * < all | property[,property]... > < fs | snap | vol > ... 1088 * 1089 * -r recurse over any child datasets 1090 * -H scripted mode. Headers are stripped, and fields are separated 1091 * by tabs instead of spaces. 1092 * -o Set of fields to display. One of "name,property,value, 1093 * received,source". Default is "name,property,value,source". 1094 * "all" is an alias for all five. 1095 * -s Set of sources to allow. One of 1096 * "local,default,inherited,received,temporary,none". Default is 1097 * all six. 1098 * -p Display values in parsable (literal) format. 1099 * 1100 * Prints properties for the given datasets. The user can control which 1101 * columns to display as well as which property types to allow. 1102 */ 1103 1104 /* 1105 * Invoked to display the properties for a single dataset. 1106 */ 1107 static int 1108 get_callback(zfs_handle_t *zhp, void *data) 1109 { 1110 char buf[ZFS_MAXPROPLEN]; 1111 char rbuf[ZFS_MAXPROPLEN]; 1112 zprop_source_t sourcetype; 1113 char source[ZFS_MAXNAMELEN]; 1114 zprop_get_cbdata_t *cbp = data; 1115 nvlist_t *user_props = zfs_get_user_props(zhp); 1116 zprop_list_t *pl = cbp->cb_proplist; 1117 nvlist_t *propval; 1118 char *strval; 1119 char *sourceval; 1120 boolean_t received = is_recvd_column(cbp); 1121 1122 for (; pl != NULL; pl = pl->pl_next) { 1123 char *recvdval = NULL; 1124 /* 1125 * Skip the special fake placeholder. This will also skip over 1126 * the name property when 'all' is specified. 1127 */ 1128 if (pl->pl_prop == ZFS_PROP_NAME && 1129 pl == cbp->cb_proplist) 1130 continue; 1131 1132 if (pl->pl_prop != ZPROP_INVAL) { 1133 if (zfs_prop_get(zhp, pl->pl_prop, buf, 1134 sizeof (buf), &sourcetype, source, 1135 sizeof (source), 1136 cbp->cb_literal) != 0) { 1137 if (pl->pl_all) 1138 continue; 1139 if (!zfs_prop_valid_for_type(pl->pl_prop, 1140 ZFS_TYPE_DATASET)) { 1141 (void) fprintf(stderr, 1142 gettext("No such property '%s'\n"), 1143 zfs_prop_to_name(pl->pl_prop)); 1144 continue; 1145 } 1146 sourcetype = ZPROP_SRC_NONE; 1147 (void) strlcpy(buf, "-", sizeof (buf)); 1148 } 1149 1150 if (received && (zfs_prop_get_recvd(zhp, 1151 zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf), 1152 cbp->cb_literal) == 0)) 1153 recvdval = rbuf; 1154 1155 zprop_print_one_property(zfs_get_name(zhp), cbp, 1156 zfs_prop_to_name(pl->pl_prop), 1157 buf, sourcetype, source, recvdval); 1158 } else if (zfs_prop_userquota(pl->pl_user_prop)) { 1159 sourcetype = ZPROP_SRC_LOCAL; 1160 1161 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop, 1162 buf, sizeof (buf), cbp->cb_literal) != 0) { 1163 sourcetype = ZPROP_SRC_NONE; 1164 (void) strlcpy(buf, "-", sizeof (buf)); 1165 } 1166 1167 zprop_print_one_property(zfs_get_name(zhp), cbp, 1168 pl->pl_user_prop, buf, sourcetype, source, NULL); 1169 } else { 1170 if (nvlist_lookup_nvlist(user_props, 1171 pl->pl_user_prop, &propval) != 0) { 1172 if (pl->pl_all) 1173 continue; 1174 sourcetype = ZPROP_SRC_NONE; 1175 strval = "-"; 1176 } else { 1177 verify(nvlist_lookup_string(propval, 1178 ZPROP_VALUE, &strval) == 0); 1179 verify(nvlist_lookup_string(propval, 1180 ZPROP_SOURCE, &sourceval) == 0); 1181 1182 if (strcmp(sourceval, 1183 zfs_get_name(zhp)) == 0) { 1184 sourcetype = ZPROP_SRC_LOCAL; 1185 } else if (strcmp(sourceval, 1186 ZPROP_SOURCE_VAL_RECVD) == 0) { 1187 sourcetype = ZPROP_SRC_RECEIVED; 1188 } else { 1189 sourcetype = ZPROP_SRC_INHERITED; 1190 (void) strlcpy(source, 1191 sourceval, sizeof (source)); 1192 } 1193 } 1194 1195 if (received && (zfs_prop_get_recvd(zhp, 1196 pl->pl_user_prop, rbuf, sizeof (rbuf), 1197 cbp->cb_literal) == 0)) 1198 recvdval = rbuf; 1199 1200 zprop_print_one_property(zfs_get_name(zhp), cbp, 1201 pl->pl_user_prop, strval, sourcetype, 1202 source, recvdval); 1203 } 1204 } 1205 1206 return (0); 1207 } 1208 1209 static int 1210 zfs_do_get(int argc, char **argv) 1211 { 1212 zprop_get_cbdata_t cb = { 0 }; 1213 int i, c, flags = 0; 1214 char *value, *fields; 1215 int ret; 1216 int limit = 0; 1217 zprop_list_t fake_name = { 0 }; 1218 1219 /* 1220 * Set up default columns and sources. 1221 */ 1222 cb.cb_sources = ZPROP_SRC_ALL; 1223 cb.cb_columns[0] = GET_COL_NAME; 1224 cb.cb_columns[1] = GET_COL_PROPERTY; 1225 cb.cb_columns[2] = GET_COL_VALUE; 1226 cb.cb_columns[3] = GET_COL_SOURCE; 1227 cb.cb_type = ZFS_TYPE_DATASET; 1228 1229 /* check options */ 1230 while ((c = getopt(argc, argv, ":d:o:s:rHp")) != -1) { 1231 switch (c) { 1232 case 'p': 1233 cb.cb_literal = B_TRUE; 1234 break; 1235 case 'd': 1236 limit = parse_depth(optarg, &flags); 1237 break; 1238 case 'r': 1239 flags |= ZFS_ITER_RECURSE; 1240 break; 1241 case 'H': 1242 cb.cb_scripted = B_TRUE; 1243 break; 1244 case ':': 1245 (void) fprintf(stderr, gettext("missing argument for " 1246 "'%c' option\n"), optopt); 1247 usage(B_FALSE); 1248 break; 1249 case 'o': 1250 /* 1251 * Process the set of columns to display. We zero out 1252 * the structure to give us a blank slate. 1253 */ 1254 bzero(&cb.cb_columns, sizeof (cb.cb_columns)); 1255 i = 0; 1256 while (*optarg != '\0') { 1257 static char *col_subopts[] = 1258 { "name", "property", "value", "received", 1259 "source", "all", NULL }; 1260 1261 if (i == ZFS_GET_NCOLS) { 1262 (void) fprintf(stderr, gettext("too " 1263 "many fields given to -o " 1264 "option\n")); 1265 usage(B_FALSE); 1266 } 1267 1268 switch (getsubopt(&optarg, col_subopts, 1269 &value)) { 1270 case 0: 1271 cb.cb_columns[i++] = GET_COL_NAME; 1272 break; 1273 case 1: 1274 cb.cb_columns[i++] = GET_COL_PROPERTY; 1275 break; 1276 case 2: 1277 cb.cb_columns[i++] = GET_COL_VALUE; 1278 break; 1279 case 3: 1280 cb.cb_columns[i++] = GET_COL_RECVD; 1281 flags |= ZFS_ITER_RECVD_PROPS; 1282 break; 1283 case 4: 1284 cb.cb_columns[i++] = GET_COL_SOURCE; 1285 break; 1286 case 5: 1287 if (i > 0) { 1288 (void) fprintf(stderr, 1289 gettext("\"all\" conflicts " 1290 "with specific fields " 1291 "given to -o option\n")); 1292 usage(B_FALSE); 1293 } 1294 cb.cb_columns[0] = GET_COL_NAME; 1295 cb.cb_columns[1] = GET_COL_PROPERTY; 1296 cb.cb_columns[2] = GET_COL_VALUE; 1297 cb.cb_columns[3] = GET_COL_RECVD; 1298 cb.cb_columns[4] = GET_COL_SOURCE; 1299 flags |= ZFS_ITER_RECVD_PROPS; 1300 i = ZFS_GET_NCOLS; 1301 break; 1302 default: 1303 (void) fprintf(stderr, 1304 gettext("invalid column name " 1305 "'%s'\n"), value); 1306 usage(B_FALSE); 1307 } 1308 } 1309 break; 1310 1311 case 's': 1312 cb.cb_sources = 0; 1313 while (*optarg != '\0') { 1314 static char *source_subopts[] = { 1315 "local", "default", "inherited", 1316 "received", "temporary", "none", 1317 NULL }; 1318 1319 switch (getsubopt(&optarg, source_subopts, 1320 &value)) { 1321 case 0: 1322 cb.cb_sources |= ZPROP_SRC_LOCAL; 1323 break; 1324 case 1: 1325 cb.cb_sources |= ZPROP_SRC_DEFAULT; 1326 break; 1327 case 2: 1328 cb.cb_sources |= ZPROP_SRC_INHERITED; 1329 break; 1330 case 3: 1331 cb.cb_sources |= ZPROP_SRC_RECEIVED; 1332 break; 1333 case 4: 1334 cb.cb_sources |= ZPROP_SRC_TEMPORARY; 1335 break; 1336 case 5: 1337 cb.cb_sources |= ZPROP_SRC_NONE; 1338 break; 1339 default: 1340 (void) fprintf(stderr, 1341 gettext("invalid source " 1342 "'%s'\n"), value); 1343 usage(B_FALSE); 1344 } 1345 } 1346 break; 1347 1348 case '?': 1349 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1350 optopt); 1351 usage(B_FALSE); 1352 } 1353 } 1354 1355 argc -= optind; 1356 argv += optind; 1357 1358 if (argc < 1) { 1359 (void) fprintf(stderr, gettext("missing property " 1360 "argument\n")); 1361 usage(B_FALSE); 1362 } 1363 1364 fields = argv[0]; 1365 1366 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1367 != 0) 1368 usage(B_FALSE); 1369 1370 argc--; 1371 argv++; 1372 1373 /* 1374 * As part of zfs_expand_proplist(), we keep track of the maximum column 1375 * width for each property. For the 'NAME' (and 'SOURCE') columns, we 1376 * need to know the maximum name length. However, the user likely did 1377 * not specify 'name' as one of the properties to fetch, so we need to 1378 * make sure we always include at least this property for 1379 * print_get_headers() to work properly. 1380 */ 1381 if (cb.cb_proplist != NULL) { 1382 fake_name.pl_prop = ZFS_PROP_NAME; 1383 fake_name.pl_width = strlen(gettext("NAME")); 1384 fake_name.pl_next = cb.cb_proplist; 1385 cb.cb_proplist = &fake_name; 1386 } 1387 1388 cb.cb_first = B_TRUE; 1389 1390 /* run for each object */ 1391 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, NULL, 1392 &cb.cb_proplist, limit, get_callback, &cb); 1393 1394 if (cb.cb_proplist == &fake_name) 1395 zprop_free_list(fake_name.pl_next); 1396 else 1397 zprop_free_list(cb.cb_proplist); 1398 1399 return (ret); 1400 } 1401 1402 /* 1403 * inherit [-rS] <property> <fs|vol> ... 1404 * 1405 * -r Recurse over all children 1406 * -S Revert to received value, if any 1407 * 1408 * For each dataset specified on the command line, inherit the given property 1409 * from its parent. Inheriting a property at the pool level will cause it to 1410 * use the default value. The '-r' flag will recurse over all children, and is 1411 * useful for setting a property on a hierarchy-wide basis, regardless of any 1412 * local modifications for each dataset. 1413 */ 1414 1415 typedef struct inherit_cbdata { 1416 const char *cb_propname; 1417 boolean_t cb_received; 1418 } inherit_cbdata_t; 1419 1420 static int 1421 inherit_recurse_cb(zfs_handle_t *zhp, void *data) 1422 { 1423 inherit_cbdata_t *cb = data; 1424 zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname); 1425 1426 /* 1427 * If we're doing it recursively, then ignore properties that 1428 * are not valid for this type of dataset. 1429 */ 1430 if (prop != ZPROP_INVAL && 1431 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp))) 1432 return (0); 1433 1434 return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0); 1435 } 1436 1437 static int 1438 inherit_cb(zfs_handle_t *zhp, void *data) 1439 { 1440 inherit_cbdata_t *cb = data; 1441 1442 return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0); 1443 } 1444 1445 static int 1446 zfs_do_inherit(int argc, char **argv) 1447 { 1448 int c; 1449 zfs_prop_t prop; 1450 inherit_cbdata_t cb = { 0 }; 1451 char *propname; 1452 int ret; 1453 int flags = 0; 1454 boolean_t received = B_FALSE; 1455 1456 /* check options */ 1457 while ((c = getopt(argc, argv, "rS")) != -1) { 1458 switch (c) { 1459 case 'r': 1460 flags |= ZFS_ITER_RECURSE; 1461 break; 1462 case 'S': 1463 received = B_TRUE; 1464 break; 1465 case '?': 1466 default: 1467 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1468 optopt); 1469 usage(B_FALSE); 1470 } 1471 } 1472 1473 argc -= optind; 1474 argv += optind; 1475 1476 /* check number of arguments */ 1477 if (argc < 1) { 1478 (void) fprintf(stderr, gettext("missing property argument\n")); 1479 usage(B_FALSE); 1480 } 1481 if (argc < 2) { 1482 (void) fprintf(stderr, gettext("missing dataset argument\n")); 1483 usage(B_FALSE); 1484 } 1485 1486 propname = argv[0]; 1487 argc--; 1488 argv++; 1489 1490 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) { 1491 if (zfs_prop_readonly(prop)) { 1492 (void) fprintf(stderr, gettext( 1493 "%s property is read-only\n"), 1494 propname); 1495 return (1); 1496 } 1497 if (!zfs_prop_inheritable(prop) && !received) { 1498 (void) fprintf(stderr, gettext("'%s' property cannot " 1499 "be inherited\n"), propname); 1500 if (prop == ZFS_PROP_QUOTA || 1501 prop == ZFS_PROP_RESERVATION || 1502 prop == ZFS_PROP_REFQUOTA || 1503 prop == ZFS_PROP_REFRESERVATION) 1504 (void) fprintf(stderr, gettext("use 'zfs set " 1505 "%s=none' to clear\n"), propname); 1506 return (1); 1507 } 1508 if (received && (prop == ZFS_PROP_VOLSIZE || 1509 prop == ZFS_PROP_VERSION)) { 1510 (void) fprintf(stderr, gettext("'%s' property cannot " 1511 "be reverted to a received value\n"), propname); 1512 return (1); 1513 } 1514 } else if (!zfs_prop_user(propname)) { 1515 (void) fprintf(stderr, gettext("invalid property '%s'\n"), 1516 propname); 1517 usage(B_FALSE); 1518 } 1519 1520 cb.cb_propname = propname; 1521 cb.cb_received = received; 1522 1523 if (flags & ZFS_ITER_RECURSE) { 1524 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, 1525 NULL, NULL, 0, inherit_recurse_cb, &cb); 1526 } else { 1527 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, 1528 NULL, NULL, 0, inherit_cb, &cb); 1529 } 1530 1531 return (ret); 1532 } 1533 1534 typedef struct upgrade_cbdata { 1535 uint64_t cb_numupgraded; 1536 uint64_t cb_numsamegraded; 1537 uint64_t cb_numfailed; 1538 uint64_t cb_version; 1539 boolean_t cb_newer; 1540 boolean_t cb_foundone; 1541 char cb_lastfs[ZFS_MAXNAMELEN]; 1542 } upgrade_cbdata_t; 1543 1544 static int 1545 same_pool(zfs_handle_t *zhp, const char *name) 1546 { 1547 int len1 = strcspn(name, "/@"); 1548 const char *zhname = zfs_get_name(zhp); 1549 int len2 = strcspn(zhname, "/@"); 1550 1551 if (len1 != len2) 1552 return (B_FALSE); 1553 return (strncmp(name, zhname, len1) == 0); 1554 } 1555 1556 static int 1557 upgrade_list_callback(zfs_handle_t *zhp, void *data) 1558 { 1559 upgrade_cbdata_t *cb = data; 1560 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1561 1562 /* list if it's old/new */ 1563 if ((!cb->cb_newer && version < ZPL_VERSION) || 1564 (cb->cb_newer && version > ZPL_VERSION)) { 1565 char *str; 1566 if (cb->cb_newer) { 1567 str = gettext("The following filesystems are " 1568 "formatted using a newer software version and\n" 1569 "cannot be accessed on the current system.\n\n"); 1570 } else { 1571 str = gettext("The following filesystems are " 1572 "out of date, and can be upgraded. After being\n" 1573 "upgraded, these filesystems (and any 'zfs send' " 1574 "streams generated from\n" 1575 "subsequent snapshots) will no longer be " 1576 "accessible by older software versions.\n\n"); 1577 } 1578 1579 if (!cb->cb_foundone) { 1580 (void) puts(str); 1581 (void) printf(gettext("VER FILESYSTEM\n")); 1582 (void) printf(gettext("--- ------------\n")); 1583 cb->cb_foundone = B_TRUE; 1584 } 1585 1586 (void) printf("%2u %s\n", version, zfs_get_name(zhp)); 1587 } 1588 1589 return (0); 1590 } 1591 1592 static int 1593 upgrade_set_callback(zfs_handle_t *zhp, void *data) 1594 { 1595 upgrade_cbdata_t *cb = data; 1596 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1597 int i; 1598 static struct { int zplver; int spaver; } table[] = { 1599 {ZPL_VERSION_FUID, SPA_VERSION_FUID}, 1600 {ZPL_VERSION_USERSPACE, SPA_VERSION_USERSPACE}, 1601 {0, 0} 1602 }; 1603 1604 1605 for (i = 0; table[i].zplver; i++) { 1606 if (cb->cb_version >= table[i].zplver) { 1607 int spa_version; 1608 1609 if (zfs_spa_version(zhp, &spa_version) < 0) 1610 return (-1); 1611 1612 if (spa_version < table[i].spaver) { 1613 /* can't upgrade */ 1614 (void) printf(gettext("%s: can not be " 1615 "upgraded; the pool version needs to first " 1616 "be upgraded\nto version %d\n\n"), 1617 zfs_get_name(zhp), table[i].spaver); 1618 cb->cb_numfailed++; 1619 return (0); 1620 } 1621 } 1622 } 1623 1624 /* upgrade */ 1625 if (version < cb->cb_version) { 1626 char verstr[16]; 1627 (void) snprintf(verstr, sizeof (verstr), 1628 "%llu", cb->cb_version); 1629 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) { 1630 /* 1631 * If they did "zfs upgrade -a", then we could 1632 * be doing ioctls to different pools. We need 1633 * to log this history once to each pool. 1634 */ 1635 verify(zpool_stage_history(g_zfs, history_str) == 0); 1636 } 1637 if (zfs_prop_set(zhp, "version", verstr) == 0) 1638 cb->cb_numupgraded++; 1639 else 1640 cb->cb_numfailed++; 1641 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp)); 1642 } else if (version > cb->cb_version) { 1643 /* can't downgrade */ 1644 (void) printf(gettext("%s: can not be downgraded; " 1645 "it is already at version %u\n"), 1646 zfs_get_name(zhp), version); 1647 cb->cb_numfailed++; 1648 } else { 1649 cb->cb_numsamegraded++; 1650 } 1651 return (0); 1652 } 1653 1654 /* 1655 * zfs upgrade 1656 * zfs upgrade -v 1657 * zfs upgrade [-r] [-V <version>] <-a | filesystem> 1658 */ 1659 static int 1660 zfs_do_upgrade(int argc, char **argv) 1661 { 1662 boolean_t all = B_FALSE; 1663 boolean_t showversions = B_FALSE; 1664 int ret; 1665 upgrade_cbdata_t cb = { 0 }; 1666 char c; 1667 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS; 1668 1669 /* check options */ 1670 while ((c = getopt(argc, argv, "rvV:a")) != -1) { 1671 switch (c) { 1672 case 'r': 1673 flags |= ZFS_ITER_RECURSE; 1674 break; 1675 case 'v': 1676 showversions = B_TRUE; 1677 break; 1678 case 'V': 1679 if (zfs_prop_string_to_index(ZFS_PROP_VERSION, 1680 optarg, &cb.cb_version) != 0) { 1681 (void) fprintf(stderr, 1682 gettext("invalid version %s\n"), optarg); 1683 usage(B_FALSE); 1684 } 1685 break; 1686 case 'a': 1687 all = B_TRUE; 1688 break; 1689 case '?': 1690 default: 1691 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1692 optopt); 1693 usage(B_FALSE); 1694 } 1695 } 1696 1697 argc -= optind; 1698 argv += optind; 1699 1700 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version)) 1701 usage(B_FALSE); 1702 if (showversions && (flags & ZFS_ITER_RECURSE || all || 1703 cb.cb_version || argc)) 1704 usage(B_FALSE); 1705 if ((all || argc) && (showversions)) 1706 usage(B_FALSE); 1707 if (all && argc) 1708 usage(B_FALSE); 1709 1710 if (showversions) { 1711 /* Show info on available versions. */ 1712 (void) printf(gettext("The following filesystem versions are " 1713 "supported:\n\n")); 1714 (void) printf(gettext("VER DESCRIPTION\n")); 1715 (void) printf("--- -----------------------------------------" 1716 "---------------\n"); 1717 (void) printf(gettext(" 1 Initial ZFS filesystem version\n")); 1718 (void) printf(gettext(" 2 Enhanced directory entries\n")); 1719 (void) printf(gettext(" 3 Case insensitive and File system " 1720 "unique identifier (FUID)\n")); 1721 (void) printf(gettext(" 4 userquota, groupquota " 1722 "properties\n")); 1723 (void) printf(gettext("\nFor more information on a particular " 1724 "version, including supported releases, see:\n\n")); 1725 (void) printf("http://www.opensolaris.org/os/community/zfs/" 1726 "version/zpl/N\n\n"); 1727 (void) printf(gettext("Where 'N' is the version number.\n")); 1728 ret = 0; 1729 } else if (argc || all) { 1730 /* Upgrade filesystems */ 1731 if (cb.cb_version == 0) 1732 cb.cb_version = ZPL_VERSION; 1733 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM, 1734 NULL, NULL, 0, upgrade_set_callback, &cb); 1735 (void) printf(gettext("%llu filesystems upgraded\n"), 1736 cb.cb_numupgraded); 1737 if (cb.cb_numsamegraded) { 1738 (void) printf(gettext("%llu filesystems already at " 1739 "this version\n"), 1740 cb.cb_numsamegraded); 1741 } 1742 if (cb.cb_numfailed != 0) 1743 ret = 1; 1744 } else { 1745 /* List old-version filesytems */ 1746 boolean_t found; 1747 (void) printf(gettext("This system is currently running " 1748 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION); 1749 1750 flags |= ZFS_ITER_RECURSE; 1751 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM, 1752 NULL, NULL, 0, upgrade_list_callback, &cb); 1753 1754 found = cb.cb_foundone; 1755 cb.cb_foundone = B_FALSE; 1756 cb.cb_newer = B_TRUE; 1757 1758 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM, 1759 NULL, NULL, 0, upgrade_list_callback, &cb); 1760 1761 if (!cb.cb_foundone && !found) { 1762 (void) printf(gettext("All filesystems are " 1763 "formatted with the current version.\n")); 1764 } 1765 } 1766 1767 return (ret); 1768 } 1769 1770 /* 1771 * zfs userspace 1772 */ 1773 static int 1774 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space) 1775 { 1776 zfs_userquota_prop_t *typep = arg; 1777 zfs_userquota_prop_t p = *typep; 1778 char *name = NULL; 1779 char *ug, *propname; 1780 char namebuf[32]; 1781 char sizebuf[32]; 1782 1783 if (domain == NULL || domain[0] == '\0') { 1784 if (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) { 1785 struct group *g = getgrgid(rid); 1786 if (g) 1787 name = g->gr_name; 1788 } else { 1789 struct passwd *p = getpwuid(rid); 1790 if (p) 1791 name = p->pw_name; 1792 } 1793 } 1794 1795 if (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) 1796 ug = "group"; 1797 else 1798 ug = "user"; 1799 1800 if (p == ZFS_PROP_USERUSED || p == ZFS_PROP_GROUPUSED) 1801 propname = "used"; 1802 else 1803 propname = "quota"; 1804 1805 if (name == NULL) { 1806 (void) snprintf(namebuf, sizeof (namebuf), 1807 "%llu", (longlong_t)rid); 1808 name = namebuf; 1809 } 1810 zfs_nicenum(space, sizebuf, sizeof (sizebuf)); 1811 1812 (void) printf("%s %s %s%c%s %s\n", propname, ug, domain, 1813 domain[0] ? '-' : ' ', name, sizebuf); 1814 1815 return (0); 1816 } 1817 1818 static int 1819 zfs_do_userspace(int argc, char **argv) 1820 { 1821 zfs_handle_t *zhp; 1822 zfs_userquota_prop_t p; 1823 int error; 1824 1825 /* 1826 * Try the python version. If the execv fails, we'll continue 1827 * and do a simplistic implementation. 1828 */ 1829 (void) execv(pypath, argv-1); 1830 1831 (void) printf("internal error: %s not found\n" 1832 "falling back on built-in implementation, " 1833 "some features will not work\n", pypath); 1834 1835 if ((zhp = zfs_open(g_zfs, argv[argc-1], ZFS_TYPE_DATASET)) == NULL) 1836 return (1); 1837 1838 (void) printf("PROP TYPE NAME VALUE\n"); 1839 1840 for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) { 1841 error = zfs_userspace(zhp, p, userspace_cb, &p); 1842 if (error) 1843 break; 1844 } 1845 return (error); 1846 } 1847 1848 /* 1849 * list [-r][-d max] [-H] [-o property[,property]...] [-t type[,type]...] 1850 * [-s property [-s property]...] [-S property [-S property]...] 1851 * <dataset> ... 1852 * 1853 * -r Recurse over all children 1854 * -d Limit recursion by depth. 1855 * -H Scripted mode; elide headers and separate columns by tabs 1856 * -o Control which fields to display. 1857 * -t Control which object types to display. 1858 * -s Specify sort columns, descending order. 1859 * -S Specify sort columns, ascending order. 1860 * 1861 * When given no arguments, lists all filesystems in the system. 1862 * Otherwise, list the specified datasets, optionally recursing down them if 1863 * '-r' is specified. 1864 */ 1865 typedef struct list_cbdata { 1866 boolean_t cb_first; 1867 boolean_t cb_scripted; 1868 zprop_list_t *cb_proplist; 1869 } list_cbdata_t; 1870 1871 /* 1872 * Given a list of columns to display, output appropriate headers for each one. 1873 */ 1874 static void 1875 print_header(zprop_list_t *pl) 1876 { 1877 char headerbuf[ZFS_MAXPROPLEN]; 1878 const char *header; 1879 int i; 1880 boolean_t first = B_TRUE; 1881 boolean_t right_justify; 1882 1883 for (; pl != NULL; pl = pl->pl_next) { 1884 if (!first) { 1885 (void) printf(" "); 1886 } else { 1887 first = B_FALSE; 1888 } 1889 1890 right_justify = B_FALSE; 1891 if (pl->pl_prop != ZPROP_INVAL) { 1892 header = zfs_prop_column_name(pl->pl_prop); 1893 right_justify = zfs_prop_align_right(pl->pl_prop); 1894 } else { 1895 for (i = 0; pl->pl_user_prop[i] != '\0'; i++) 1896 headerbuf[i] = toupper(pl->pl_user_prop[i]); 1897 headerbuf[i] = '\0'; 1898 header = headerbuf; 1899 } 1900 1901 if (pl->pl_next == NULL && !right_justify) 1902 (void) printf("%s", header); 1903 else if (right_justify) 1904 (void) printf("%*s", pl->pl_width, header); 1905 else 1906 (void) printf("%-*s", pl->pl_width, header); 1907 } 1908 1909 (void) printf("\n"); 1910 } 1911 1912 /* 1913 * Given a dataset and a list of fields, print out all the properties according 1914 * to the described layout. 1915 */ 1916 static void 1917 print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted) 1918 { 1919 boolean_t first = B_TRUE; 1920 char property[ZFS_MAXPROPLEN]; 1921 nvlist_t *userprops = zfs_get_user_props(zhp); 1922 nvlist_t *propval; 1923 char *propstr; 1924 boolean_t right_justify; 1925 int width; 1926 1927 for (; pl != NULL; pl = pl->pl_next) { 1928 if (!first) { 1929 if (scripted) 1930 (void) printf("\t"); 1931 else 1932 (void) printf(" "); 1933 } else { 1934 first = B_FALSE; 1935 } 1936 1937 if (pl->pl_prop != ZPROP_INVAL) { 1938 if (zfs_prop_get(zhp, pl->pl_prop, property, 1939 sizeof (property), NULL, NULL, 0, B_FALSE) != 0) 1940 propstr = "-"; 1941 else 1942 propstr = property; 1943 1944 right_justify = zfs_prop_align_right(pl->pl_prop); 1945 } else if (zfs_prop_userquota(pl->pl_user_prop)) { 1946 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop, 1947 property, sizeof (property), B_FALSE) != 0) 1948 propstr = "-"; 1949 else 1950 propstr = property; 1951 right_justify = B_TRUE; 1952 } else { 1953 if (nvlist_lookup_nvlist(userprops, 1954 pl->pl_user_prop, &propval) != 0) 1955 propstr = "-"; 1956 else 1957 verify(nvlist_lookup_string(propval, 1958 ZPROP_VALUE, &propstr) == 0); 1959 right_justify = B_FALSE; 1960 } 1961 1962 width = pl->pl_width; 1963 1964 /* 1965 * If this is being called in scripted mode, or if this is the 1966 * last column and it is left-justified, don't include a width 1967 * format specifier. 1968 */ 1969 if (scripted || (pl->pl_next == NULL && !right_justify)) 1970 (void) printf("%s", propstr); 1971 else if (right_justify) 1972 (void) printf("%*s", width, propstr); 1973 else 1974 (void) printf("%-*s", width, propstr); 1975 } 1976 1977 (void) printf("\n"); 1978 } 1979 1980 /* 1981 * Generic callback function to list a dataset or snapshot. 1982 */ 1983 static int 1984 list_callback(zfs_handle_t *zhp, void *data) 1985 { 1986 list_cbdata_t *cbp = data; 1987 1988 if (cbp->cb_first) { 1989 if (!cbp->cb_scripted) 1990 print_header(cbp->cb_proplist); 1991 cbp->cb_first = B_FALSE; 1992 } 1993 1994 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted); 1995 1996 return (0); 1997 } 1998 1999 static int 2000 zfs_do_list(int argc, char **argv) 2001 { 2002 int c; 2003 boolean_t scripted = B_FALSE; 2004 static char default_fields[] = 2005 "name,used,available,referenced,mountpoint"; 2006 int types = ZFS_TYPE_DATASET; 2007 boolean_t types_specified = B_FALSE; 2008 char *fields = NULL; 2009 list_cbdata_t cb = { 0 }; 2010 char *value; 2011 int limit = 0; 2012 int ret; 2013 zfs_sort_column_t *sortcol = NULL; 2014 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS; 2015 2016 /* check options */ 2017 while ((c = getopt(argc, argv, ":d:o:rt:Hs:S:")) != -1) { 2018 switch (c) { 2019 case 'o': 2020 fields = optarg; 2021 break; 2022 case 'd': 2023 limit = parse_depth(optarg, &flags); 2024 break; 2025 case 'r': 2026 flags |= ZFS_ITER_RECURSE; 2027 break; 2028 case 'H': 2029 scripted = B_TRUE; 2030 break; 2031 case 's': 2032 if (zfs_add_sort_column(&sortcol, optarg, 2033 B_FALSE) != 0) { 2034 (void) fprintf(stderr, 2035 gettext("invalid property '%s'\n"), optarg); 2036 usage(B_FALSE); 2037 } 2038 break; 2039 case 'S': 2040 if (zfs_add_sort_column(&sortcol, optarg, 2041 B_TRUE) != 0) { 2042 (void) fprintf(stderr, 2043 gettext("invalid property '%s'\n"), optarg); 2044 usage(B_FALSE); 2045 } 2046 break; 2047 case 't': 2048 types = 0; 2049 types_specified = B_TRUE; 2050 flags &= ~ZFS_ITER_PROP_LISTSNAPS; 2051 while (*optarg != '\0') { 2052 static char *type_subopts[] = { "filesystem", 2053 "volume", "snapshot", "all", NULL }; 2054 2055 switch (getsubopt(&optarg, type_subopts, 2056 &value)) { 2057 case 0: 2058 types |= ZFS_TYPE_FILESYSTEM; 2059 break; 2060 case 1: 2061 types |= ZFS_TYPE_VOLUME; 2062 break; 2063 case 2: 2064 types |= ZFS_TYPE_SNAPSHOT; 2065 break; 2066 case 3: 2067 types = ZFS_TYPE_DATASET; 2068 break; 2069 2070 default: 2071 (void) fprintf(stderr, 2072 gettext("invalid type '%s'\n"), 2073 value); 2074 usage(B_FALSE); 2075 } 2076 } 2077 break; 2078 case ':': 2079 (void) fprintf(stderr, gettext("missing argument for " 2080 "'%c' option\n"), optopt); 2081 usage(B_FALSE); 2082 break; 2083 case '?': 2084 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2085 optopt); 2086 usage(B_FALSE); 2087 } 2088 } 2089 2090 argc -= optind; 2091 argv += optind; 2092 2093 if (fields == NULL) 2094 fields = default_fields; 2095 2096 /* 2097 * If "-o space" and no types were specified, don't display snapshots. 2098 */ 2099 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE) 2100 types &= ~ZFS_TYPE_SNAPSHOT; 2101 2102 /* 2103 * If the user specifies '-o all', the zprop_get_list() doesn't 2104 * normally include the name of the dataset. For 'zfs list', we always 2105 * want this property to be first. 2106 */ 2107 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 2108 != 0) 2109 usage(B_FALSE); 2110 2111 cb.cb_scripted = scripted; 2112 cb.cb_first = B_TRUE; 2113 2114 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist, 2115 limit, list_callback, &cb); 2116 2117 zprop_free_list(cb.cb_proplist); 2118 zfs_free_sort_columns(sortcol); 2119 2120 if (ret == 0 && cb.cb_first && !cb.cb_scripted) 2121 (void) printf(gettext("no datasets available\n")); 2122 2123 return (ret); 2124 } 2125 2126 /* 2127 * zfs rename <fs | snap | vol> <fs | snap | vol> 2128 * zfs rename -p <fs | vol> <fs | vol> 2129 * zfs rename -r <snap> <snap> 2130 * 2131 * Renames the given dataset to another of the same type. 2132 * 2133 * The '-p' flag creates all the non-existing ancestors of the target first. 2134 */ 2135 /* ARGSUSED */ 2136 static int 2137 zfs_do_rename(int argc, char **argv) 2138 { 2139 zfs_handle_t *zhp; 2140 int c; 2141 int ret; 2142 boolean_t recurse = B_FALSE; 2143 boolean_t parents = B_FALSE; 2144 2145 /* check options */ 2146 while ((c = getopt(argc, argv, "pr")) != -1) { 2147 switch (c) { 2148 case 'p': 2149 parents = B_TRUE; 2150 break; 2151 case 'r': 2152 recurse = B_TRUE; 2153 break; 2154 case '?': 2155 default: 2156 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2157 optopt); 2158 usage(B_FALSE); 2159 } 2160 } 2161 2162 argc -= optind; 2163 argv += optind; 2164 2165 /* check number of arguments */ 2166 if (argc < 1) { 2167 (void) fprintf(stderr, gettext("missing source dataset " 2168 "argument\n")); 2169 usage(B_FALSE); 2170 } 2171 if (argc < 2) { 2172 (void) fprintf(stderr, gettext("missing target dataset " 2173 "argument\n")); 2174 usage(B_FALSE); 2175 } 2176 if (argc > 2) { 2177 (void) fprintf(stderr, gettext("too many arguments\n")); 2178 usage(B_FALSE); 2179 } 2180 2181 if (recurse && parents) { 2182 (void) fprintf(stderr, gettext("-p and -r options are mutually " 2183 "exclusive\n")); 2184 usage(B_FALSE); 2185 } 2186 2187 if (recurse && strchr(argv[0], '@') == 0) { 2188 (void) fprintf(stderr, gettext("source dataset for recursive " 2189 "rename must be a snapshot\n")); 2190 usage(B_FALSE); 2191 } 2192 2193 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM | 2194 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL) 2195 return (1); 2196 2197 /* If we were asked and the name looks good, try to create ancestors. */ 2198 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) && 2199 zfs_create_ancestors(g_zfs, argv[1]) != 0) { 2200 zfs_close(zhp); 2201 return (1); 2202 } 2203 2204 ret = (zfs_rename(zhp, argv[1], recurse) != 0); 2205 2206 zfs_close(zhp); 2207 return (ret); 2208 } 2209 2210 /* 2211 * zfs promote <fs> 2212 * 2213 * Promotes the given clone fs to be the parent 2214 */ 2215 /* ARGSUSED */ 2216 static int 2217 zfs_do_promote(int argc, char **argv) 2218 { 2219 zfs_handle_t *zhp; 2220 int ret; 2221 2222 /* check options */ 2223 if (argc > 1 && argv[1][0] == '-') { 2224 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2225 argv[1][1]); 2226 usage(B_FALSE); 2227 } 2228 2229 /* check number of arguments */ 2230 if (argc < 2) { 2231 (void) fprintf(stderr, gettext("missing clone filesystem" 2232 " argument\n")); 2233 usage(B_FALSE); 2234 } 2235 if (argc > 2) { 2236 (void) fprintf(stderr, gettext("too many arguments\n")); 2237 usage(B_FALSE); 2238 } 2239 2240 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2241 if (zhp == NULL) 2242 return (1); 2243 2244 ret = (zfs_promote(zhp) != 0); 2245 2246 2247 zfs_close(zhp); 2248 return (ret); 2249 } 2250 2251 /* 2252 * zfs rollback [-rRf] <snapshot> 2253 * 2254 * -r Delete any intervening snapshots before doing rollback 2255 * -R Delete any snapshots and their clones 2256 * -f ignored for backwards compatability 2257 * 2258 * Given a filesystem, rollback to a specific snapshot, discarding any changes 2259 * since then and making it the active dataset. If more recent snapshots exist, 2260 * the command will complain unless the '-r' flag is given. 2261 */ 2262 typedef struct rollback_cbdata { 2263 uint64_t cb_create; 2264 boolean_t cb_first; 2265 int cb_doclones; 2266 char *cb_target; 2267 int cb_error; 2268 boolean_t cb_recurse; 2269 boolean_t cb_dependent; 2270 } rollback_cbdata_t; 2271 2272 /* 2273 * Report any snapshots more recent than the one specified. Used when '-r' is 2274 * not specified. We reuse this same callback for the snapshot dependents - if 2275 * 'cb_dependent' is set, then this is a dependent and we should report it 2276 * without checking the transaction group. 2277 */ 2278 static int 2279 rollback_check(zfs_handle_t *zhp, void *data) 2280 { 2281 rollback_cbdata_t *cbp = data; 2282 2283 if (cbp->cb_doclones) { 2284 zfs_close(zhp); 2285 return (0); 2286 } 2287 2288 if (!cbp->cb_dependent) { 2289 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 && 2290 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && 2291 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > 2292 cbp->cb_create) { 2293 2294 if (cbp->cb_first && !cbp->cb_recurse) { 2295 (void) fprintf(stderr, gettext("cannot " 2296 "rollback to '%s': more recent snapshots " 2297 "exist\n"), 2298 cbp->cb_target); 2299 (void) fprintf(stderr, gettext("use '-r' to " 2300 "force deletion of the following " 2301 "snapshots:\n")); 2302 cbp->cb_first = 0; 2303 cbp->cb_error = 1; 2304 } 2305 2306 if (cbp->cb_recurse) { 2307 cbp->cb_dependent = B_TRUE; 2308 if (zfs_iter_dependents(zhp, B_TRUE, 2309 rollback_check, cbp) != 0) { 2310 zfs_close(zhp); 2311 return (-1); 2312 } 2313 cbp->cb_dependent = B_FALSE; 2314 } else { 2315 (void) fprintf(stderr, "%s\n", 2316 zfs_get_name(zhp)); 2317 } 2318 } 2319 } else { 2320 if (cbp->cb_first && cbp->cb_recurse) { 2321 (void) fprintf(stderr, gettext("cannot rollback to " 2322 "'%s': clones of previous snapshots exist\n"), 2323 cbp->cb_target); 2324 (void) fprintf(stderr, gettext("use '-R' to " 2325 "force deletion of the following clones and " 2326 "dependents:\n")); 2327 cbp->cb_first = 0; 2328 cbp->cb_error = 1; 2329 } 2330 2331 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 2332 } 2333 2334 zfs_close(zhp); 2335 return (0); 2336 } 2337 2338 static int 2339 zfs_do_rollback(int argc, char **argv) 2340 { 2341 int ret; 2342 int c; 2343 boolean_t force = B_FALSE; 2344 rollback_cbdata_t cb = { 0 }; 2345 zfs_handle_t *zhp, *snap; 2346 char parentname[ZFS_MAXNAMELEN]; 2347 char *delim; 2348 2349 /* check options */ 2350 while ((c = getopt(argc, argv, "rRf")) != -1) { 2351 switch (c) { 2352 case 'r': 2353 cb.cb_recurse = 1; 2354 break; 2355 case 'R': 2356 cb.cb_recurse = 1; 2357 cb.cb_doclones = 1; 2358 break; 2359 case 'f': 2360 force = B_TRUE; 2361 break; 2362 case '?': 2363 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2364 optopt); 2365 usage(B_FALSE); 2366 } 2367 } 2368 2369 argc -= optind; 2370 argv += optind; 2371 2372 /* check number of arguments */ 2373 if (argc < 1) { 2374 (void) fprintf(stderr, gettext("missing dataset argument\n")); 2375 usage(B_FALSE); 2376 } 2377 if (argc > 1) { 2378 (void) fprintf(stderr, gettext("too many arguments\n")); 2379 usage(B_FALSE); 2380 } 2381 2382 /* open the snapshot */ 2383 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 2384 return (1); 2385 2386 /* open the parent dataset */ 2387 (void) strlcpy(parentname, argv[0], sizeof (parentname)); 2388 verify((delim = strrchr(parentname, '@')) != NULL); 2389 *delim = '\0'; 2390 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) { 2391 zfs_close(snap); 2392 return (1); 2393 } 2394 2395 /* 2396 * Check for more recent snapshots and/or clones based on the presence 2397 * of '-r' and '-R'. 2398 */ 2399 cb.cb_target = argv[0]; 2400 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 2401 cb.cb_first = B_TRUE; 2402 cb.cb_error = 0; 2403 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0) 2404 goto out; 2405 2406 if ((ret = cb.cb_error) != 0) 2407 goto out; 2408 2409 /* 2410 * Rollback parent to the given snapshot. 2411 */ 2412 ret = zfs_rollback(zhp, snap, force); 2413 2414 out: 2415 zfs_close(snap); 2416 zfs_close(zhp); 2417 2418 if (ret == 0) 2419 return (0); 2420 else 2421 return (1); 2422 } 2423 2424 /* 2425 * zfs set property=value { fs | snap | vol } ... 2426 * 2427 * Sets the given property for all datasets specified on the command line. 2428 */ 2429 typedef struct set_cbdata { 2430 char *cb_propname; 2431 char *cb_value; 2432 } set_cbdata_t; 2433 2434 static int 2435 set_callback(zfs_handle_t *zhp, void *data) 2436 { 2437 set_cbdata_t *cbp = data; 2438 2439 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) { 2440 switch (libzfs_errno(g_zfs)) { 2441 case EZFS_MOUNTFAILED: 2442 (void) fprintf(stderr, gettext("property may be set " 2443 "but unable to remount filesystem\n")); 2444 break; 2445 case EZFS_SHARENFSFAILED: 2446 (void) fprintf(stderr, gettext("property may be set " 2447 "but unable to reshare filesystem\n")); 2448 break; 2449 } 2450 return (1); 2451 } 2452 return (0); 2453 } 2454 2455 static int 2456 zfs_do_set(int argc, char **argv) 2457 { 2458 set_cbdata_t cb; 2459 int ret; 2460 2461 /* check for options */ 2462 if (argc > 1 && argv[1][0] == '-') { 2463 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2464 argv[1][1]); 2465 usage(B_FALSE); 2466 } 2467 2468 /* check number of arguments */ 2469 if (argc < 2) { 2470 (void) fprintf(stderr, gettext("missing property=value " 2471 "argument\n")); 2472 usage(B_FALSE); 2473 } 2474 if (argc < 3) { 2475 (void) fprintf(stderr, gettext("missing dataset name\n")); 2476 usage(B_FALSE); 2477 } 2478 2479 /* validate property=value argument */ 2480 cb.cb_propname = argv[1]; 2481 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) || 2482 (cb.cb_value[1] == '\0')) { 2483 (void) fprintf(stderr, gettext("missing value in " 2484 "property=value argument\n")); 2485 usage(B_FALSE); 2486 } 2487 2488 *cb.cb_value = '\0'; 2489 cb.cb_value++; 2490 2491 if (*cb.cb_propname == '\0') { 2492 (void) fprintf(stderr, 2493 gettext("missing property in property=value argument\n")); 2494 usage(B_FALSE); 2495 } 2496 2497 ret = zfs_for_each(argc - 2, argv + 2, NULL, 2498 ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, &cb); 2499 2500 return (ret); 2501 } 2502 2503 /* 2504 * zfs snapshot [-r] [-o prop=value] ... <fs@snap> 2505 * 2506 * Creates a snapshot with the given name. While functionally equivalent to 2507 * 'zfs create', it is a separate command to differentiate intent. 2508 */ 2509 static int 2510 zfs_do_snapshot(int argc, char **argv) 2511 { 2512 boolean_t recursive = B_FALSE; 2513 int ret; 2514 char c; 2515 nvlist_t *props; 2516 2517 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 2518 (void) fprintf(stderr, gettext("internal error: " 2519 "out of memory\n")); 2520 return (1); 2521 } 2522 2523 /* check options */ 2524 while ((c = getopt(argc, argv, "ro:")) != -1) { 2525 switch (c) { 2526 case 'o': 2527 if (parseprop(props)) 2528 return (1); 2529 break; 2530 case 'r': 2531 recursive = B_TRUE; 2532 break; 2533 case '?': 2534 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2535 optopt); 2536 goto usage; 2537 } 2538 } 2539 2540 argc -= optind; 2541 argv += optind; 2542 2543 /* check number of arguments */ 2544 if (argc < 1) { 2545 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2546 goto usage; 2547 } 2548 if (argc > 1) { 2549 (void) fprintf(stderr, gettext("too many arguments\n")); 2550 goto usage; 2551 } 2552 2553 ret = zfs_snapshot(g_zfs, argv[0], recursive, props); 2554 nvlist_free(props); 2555 if (ret && recursive) 2556 (void) fprintf(stderr, gettext("no snapshots were created\n")); 2557 return (ret != 0); 2558 2559 usage: 2560 nvlist_free(props); 2561 usage(B_FALSE); 2562 return (-1); 2563 } 2564 2565 /* 2566 * zfs send [-vDp] -R [-i|-I <@snap>] <fs@snap> 2567 * zfs send [-vDp] [-i|-I <@snap>] <fs@snap> 2568 * 2569 * Send a backup stream to stdout. 2570 */ 2571 static int 2572 zfs_do_send(int argc, char **argv) 2573 { 2574 char *fromname = NULL; 2575 char *toname = NULL; 2576 char *cp; 2577 zfs_handle_t *zhp; 2578 sendflags_t flags = { 0 }; 2579 int c, err; 2580 2581 /* check options */ 2582 while ((c = getopt(argc, argv, ":i:I:RDpv")) != -1) { 2583 switch (c) { 2584 case 'i': 2585 if (fromname) 2586 usage(B_FALSE); 2587 fromname = optarg; 2588 break; 2589 case 'I': 2590 if (fromname) 2591 usage(B_FALSE); 2592 fromname = optarg; 2593 flags.doall = B_TRUE; 2594 break; 2595 case 'R': 2596 flags.replicate = B_TRUE; 2597 break; 2598 case 'p': 2599 flags.props = B_TRUE; 2600 break; 2601 case 'v': 2602 flags.verbose = B_TRUE; 2603 break; 2604 case 'D': 2605 flags.dedup = B_TRUE; 2606 break; 2607 case ':': 2608 (void) fprintf(stderr, gettext("missing argument for " 2609 "'%c' option\n"), optopt); 2610 usage(B_FALSE); 2611 break; 2612 case '?': 2613 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2614 optopt); 2615 usage(B_FALSE); 2616 } 2617 } 2618 2619 argc -= optind; 2620 argv += optind; 2621 2622 /* check number of arguments */ 2623 if (argc < 1) { 2624 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2625 usage(B_FALSE); 2626 } 2627 if (argc > 1) { 2628 (void) fprintf(stderr, gettext("too many arguments\n")); 2629 usage(B_FALSE); 2630 } 2631 2632 if (isatty(STDOUT_FILENO)) { 2633 (void) fprintf(stderr, 2634 gettext("Error: Stream can not be written to a terminal.\n" 2635 "You must redirect standard output.\n")); 2636 return (1); 2637 } 2638 2639 cp = strchr(argv[0], '@'); 2640 if (cp == NULL) { 2641 (void) fprintf(stderr, 2642 gettext("argument must be a snapshot\n")); 2643 usage(B_FALSE); 2644 } 2645 *cp = '\0'; 2646 toname = cp + 1; 2647 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2648 if (zhp == NULL) 2649 return (1); 2650 2651 /* 2652 * If they specified the full path to the snapshot, chop off 2653 * everything except the short name of the snapshot, but special 2654 * case if they specify the origin. 2655 */ 2656 if (fromname && (cp = strchr(fromname, '@')) != NULL) { 2657 char origin[ZFS_MAXNAMELEN]; 2658 zprop_source_t src; 2659 2660 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN, 2661 origin, sizeof (origin), &src, NULL, 0, B_FALSE); 2662 2663 if (strcmp(origin, fromname) == 0) { 2664 fromname = NULL; 2665 flags.fromorigin = B_TRUE; 2666 } else { 2667 *cp = '\0'; 2668 if (cp != fromname && strcmp(argv[0], fromname)) { 2669 (void) fprintf(stderr, 2670 gettext("incremental source must be " 2671 "in same filesystem\n")); 2672 usage(B_FALSE); 2673 } 2674 fromname = cp + 1; 2675 if (strchr(fromname, '@') || strchr(fromname, '/')) { 2676 (void) fprintf(stderr, 2677 gettext("invalid incremental source\n")); 2678 usage(B_FALSE); 2679 } 2680 } 2681 } 2682 2683 if (flags.replicate && fromname == NULL) 2684 flags.doall = B_TRUE; 2685 2686 err = zfs_send(zhp, fromname, toname, flags, STDOUT_FILENO, NULL, 0); 2687 zfs_close(zhp); 2688 2689 return (err != 0); 2690 } 2691 2692 /* 2693 * zfs receive [-denvF] <fs@snap> 2694 * 2695 * Restore a backup stream from stdin. 2696 */ 2697 static int 2698 zfs_do_receive(int argc, char **argv) 2699 { 2700 int c, err; 2701 recvflags_t flags = { 0 }; 2702 2703 /* check options */ 2704 while ((c = getopt(argc, argv, ":denuvF")) != -1) { 2705 switch (c) { 2706 case 'd': 2707 flags.isprefix = B_TRUE; 2708 break; 2709 case 'e': 2710 flags.isprefix = B_TRUE; 2711 flags.istail = B_TRUE; 2712 break; 2713 case 'n': 2714 flags.dryrun = B_TRUE; 2715 break; 2716 case 'u': 2717 flags.nomount = B_TRUE; 2718 break; 2719 case 'v': 2720 flags.verbose = B_TRUE; 2721 break; 2722 case 'F': 2723 flags.force = B_TRUE; 2724 break; 2725 case ':': 2726 (void) fprintf(stderr, gettext("missing argument for " 2727 "'%c' option\n"), optopt); 2728 usage(B_FALSE); 2729 break; 2730 case '?': 2731 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2732 optopt); 2733 usage(B_FALSE); 2734 } 2735 } 2736 2737 argc -= optind; 2738 argv += optind; 2739 2740 /* check number of arguments */ 2741 if (argc < 1) { 2742 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2743 usage(B_FALSE); 2744 } 2745 if (argc > 1) { 2746 (void) fprintf(stderr, gettext("too many arguments\n")); 2747 usage(B_FALSE); 2748 } 2749 2750 if (isatty(STDIN_FILENO)) { 2751 (void) fprintf(stderr, 2752 gettext("Error: Backup stream can not be read " 2753 "from a terminal.\n" 2754 "You must redirect standard input.\n")); 2755 return (1); 2756 } 2757 2758 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL); 2759 2760 return (err != 0); 2761 } 2762 2763 static int 2764 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding) 2765 { 2766 int errors = 0; 2767 int i; 2768 const char *tag; 2769 boolean_t recursive = B_FALSE; 2770 boolean_t temphold = B_FALSE; 2771 const char *opts = holding ? "rt" : "r"; 2772 int c; 2773 2774 /* check options */ 2775 while ((c = getopt(argc, argv, opts)) != -1) { 2776 switch (c) { 2777 case 'r': 2778 recursive = B_TRUE; 2779 break; 2780 case 't': 2781 temphold = B_TRUE; 2782 break; 2783 case '?': 2784 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2785 optopt); 2786 usage(B_FALSE); 2787 } 2788 } 2789 2790 argc -= optind; 2791 argv += optind; 2792 2793 /* check number of arguments */ 2794 if (argc < 2) 2795 usage(B_FALSE); 2796 2797 tag = argv[0]; 2798 --argc; 2799 ++argv; 2800 2801 if (holding && tag[0] == '.') { 2802 /* tags starting with '.' are reserved for libzfs */ 2803 (void) fprintf(stderr, gettext("tag may not start with '.'\n")); 2804 usage(B_FALSE); 2805 } 2806 2807 for (i = 0; i < argc; ++i) { 2808 zfs_handle_t *zhp; 2809 char parent[ZFS_MAXNAMELEN]; 2810 const char *delim; 2811 char *path = argv[i]; 2812 2813 delim = strchr(path, '@'); 2814 if (delim == NULL) { 2815 (void) fprintf(stderr, 2816 gettext("'%s' is not a snapshot\n"), path); 2817 ++errors; 2818 continue; 2819 } 2820 (void) strncpy(parent, path, delim - path); 2821 parent[delim - path] = '\0'; 2822 2823 zhp = zfs_open(g_zfs, parent, 2824 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2825 if (zhp == NULL) { 2826 ++errors; 2827 continue; 2828 } 2829 if (holding) { 2830 if (zfs_hold(zhp, delim+1, tag, recursive, 2831 temphold, B_FALSE) != 0) 2832 ++errors; 2833 } else { 2834 if (zfs_release(zhp, delim+1, tag, recursive) != 0) 2835 ++errors; 2836 } 2837 zfs_close(zhp); 2838 } 2839 2840 return (errors != 0); 2841 } 2842 2843 /* 2844 * zfs hold [-r] [-t] <tag> <snap> ... 2845 * 2846 * -r Recursively hold 2847 * -t Temporary hold (hidden option) 2848 * 2849 * Apply a user-hold with the given tag to the list of snapshots. 2850 */ 2851 static int 2852 zfs_do_hold(int argc, char **argv) 2853 { 2854 return (zfs_do_hold_rele_impl(argc, argv, B_TRUE)); 2855 } 2856 2857 /* 2858 * zfs release [-r] <tag> <snap> ... 2859 * 2860 * -r Recursively release 2861 * 2862 * Release a user-hold with the given tag from the list of snapshots. 2863 */ 2864 static int 2865 zfs_do_release(int argc, char **argv) 2866 { 2867 return (zfs_do_hold_rele_impl(argc, argv, B_FALSE)); 2868 } 2869 2870 typedef struct get_all_cbdata { 2871 zfs_handle_t **cb_handles; 2872 size_t cb_alloc; 2873 size_t cb_used; 2874 uint_t cb_types; 2875 boolean_t cb_verbose; 2876 } get_all_cbdata_t; 2877 2878 #define CHECK_SPINNER 30 2879 #define SPINNER_TIME 3 /* seconds */ 2880 #define MOUNT_TIME 5 /* seconds */ 2881 2882 static int 2883 get_one_dataset(zfs_handle_t *zhp, void *data) 2884 { 2885 static char spin[] = { '-', '\\', '|', '/' }; 2886 static int spinval = 0; 2887 static int spincheck = 0; 2888 static time_t last_spin_time = (time_t)0; 2889 get_all_cbdata_t *cbp = data; 2890 zfs_type_t type = zfs_get_type(zhp); 2891 2892 if (cbp->cb_verbose) { 2893 if (--spincheck < 0) { 2894 time_t now = time(NULL); 2895 if (last_spin_time + SPINNER_TIME < now) { 2896 (void) printf("\b%c", spin[spinval++ % 4]); 2897 (void) fflush(stdout); 2898 last_spin_time = now; 2899 } 2900 spincheck = CHECK_SPINNER; 2901 } 2902 } 2903 2904 /* 2905 * Interate over any nested datasets. 2906 */ 2907 if (type == ZFS_TYPE_FILESYSTEM && 2908 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) { 2909 zfs_close(zhp); 2910 return (1); 2911 } 2912 2913 /* 2914 * Skip any datasets whose type does not match. 2915 */ 2916 if ((type & cbp->cb_types) == 0) { 2917 zfs_close(zhp); 2918 return (0); 2919 } 2920 2921 if (cbp->cb_alloc == cbp->cb_used) { 2922 zfs_handle_t **handles; 2923 2924 if (cbp->cb_alloc == 0) 2925 cbp->cb_alloc = 64; 2926 else 2927 cbp->cb_alloc *= 2; 2928 2929 handles = safe_malloc(cbp->cb_alloc * sizeof (void *)); 2930 2931 if (cbp->cb_handles) { 2932 bcopy(cbp->cb_handles, handles, 2933 cbp->cb_used * sizeof (void *)); 2934 free(cbp->cb_handles); 2935 } 2936 2937 cbp->cb_handles = handles; 2938 } 2939 2940 cbp->cb_handles[cbp->cb_used++] = zhp; 2941 2942 return (0); 2943 } 2944 2945 static void 2946 get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count, 2947 boolean_t verbose) 2948 { 2949 get_all_cbdata_t cb = { 0 }; 2950 cb.cb_types = types; 2951 cb.cb_verbose = verbose; 2952 2953 if (verbose) { 2954 (void) printf("%s: *", gettext("Reading ZFS config")); 2955 (void) fflush(stdout); 2956 } 2957 2958 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb); 2959 2960 *dslist = cb.cb_handles; 2961 *count = cb.cb_used; 2962 2963 if (verbose) { 2964 (void) printf("\b%s\n", gettext("done.")); 2965 } 2966 } 2967 2968 static int 2969 dataset_cmp(const void *a, const void *b) 2970 { 2971 zfs_handle_t **za = (zfs_handle_t **)a; 2972 zfs_handle_t **zb = (zfs_handle_t **)b; 2973 char mounta[MAXPATHLEN]; 2974 char mountb[MAXPATHLEN]; 2975 boolean_t gota, gotb; 2976 2977 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0) 2978 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta, 2979 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0); 2980 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0) 2981 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb, 2982 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0); 2983 2984 if (gota && gotb) 2985 return (strcmp(mounta, mountb)); 2986 2987 if (gota) 2988 return (-1); 2989 if (gotb) 2990 return (1); 2991 2992 return (strcmp(zfs_get_name(a), zfs_get_name(b))); 2993 } 2994 2995 /* 2996 * Generic callback for sharing or mounting filesystems. Because the code is so 2997 * similar, we have a common function with an extra parameter to determine which 2998 * mode we are using. 2999 */ 3000 #define OP_SHARE 0x1 3001 #define OP_MOUNT 0x2 3002 3003 /* 3004 * Share or mount a dataset. 3005 */ 3006 static int 3007 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol, 3008 boolean_t explicit, const char *options) 3009 { 3010 char mountpoint[ZFS_MAXPROPLEN]; 3011 char shareopts[ZFS_MAXPROPLEN]; 3012 char smbshareopts[ZFS_MAXPROPLEN]; 3013 const char *cmdname = op == OP_SHARE ? "share" : "mount"; 3014 struct mnttab mnt; 3015 uint64_t zoned, canmount; 3016 zfs_type_t type = zfs_get_type(zhp); 3017 boolean_t shared_nfs, shared_smb; 3018 3019 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)); 3020 3021 if (type == ZFS_TYPE_FILESYSTEM) { 3022 /* 3023 * Check to make sure we can mount/share this dataset. If we 3024 * are in the global zone and the filesystem is exported to a 3025 * local zone, or if we are in a local zone and the 3026 * filesystem is not exported, then it is an error. 3027 */ 3028 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 3029 3030 if (zoned && getzoneid() == GLOBAL_ZONEID) { 3031 if (!explicit) 3032 return (0); 3033 3034 (void) fprintf(stderr, gettext("cannot %s '%s': " 3035 "dataset is exported to a local zone\n"), cmdname, 3036 zfs_get_name(zhp)); 3037 return (1); 3038 3039 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) { 3040 if (!explicit) 3041 return (0); 3042 3043 (void) fprintf(stderr, gettext("cannot %s '%s': " 3044 "permission denied\n"), cmdname, 3045 zfs_get_name(zhp)); 3046 return (1); 3047 } 3048 3049 /* 3050 * Ignore any filesystems which don't apply to us. This 3051 * includes those with a legacy mountpoint, or those with 3052 * legacy share options. 3053 */ 3054 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 3055 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0); 3056 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts, 3057 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3058 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts, 3059 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0); 3060 3061 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 && 3062 strcmp(smbshareopts, "off") == 0) { 3063 if (!explicit) 3064 return (0); 3065 3066 (void) fprintf(stderr, gettext("cannot share '%s': " 3067 "legacy share\n"), zfs_get_name(zhp)); 3068 (void) fprintf(stderr, gettext("use share(1M) to " 3069 "share this filesystem, or set " 3070 "sharenfs property on\n")); 3071 return (1); 3072 } 3073 3074 /* 3075 * We cannot share or mount legacy filesystems. If the 3076 * shareopts is non-legacy but the mountpoint is legacy, we 3077 * treat it as a legacy share. 3078 */ 3079 if (strcmp(mountpoint, "legacy") == 0) { 3080 if (!explicit) 3081 return (0); 3082 3083 (void) fprintf(stderr, gettext("cannot %s '%s': " 3084 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp)); 3085 (void) fprintf(stderr, gettext("use %s(1M) to " 3086 "%s this filesystem\n"), cmdname, cmdname); 3087 return (1); 3088 } 3089 3090 if (strcmp(mountpoint, "none") == 0) { 3091 if (!explicit) 3092 return (0); 3093 3094 (void) fprintf(stderr, gettext("cannot %s '%s': no " 3095 "mountpoint set\n"), cmdname, zfs_get_name(zhp)); 3096 return (1); 3097 } 3098 3099 /* 3100 * canmount explicit outcome 3101 * on no pass through 3102 * on yes pass through 3103 * off no return 0 3104 * off yes display error, return 1 3105 * noauto no return 0 3106 * noauto yes pass through 3107 */ 3108 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 3109 if (canmount == ZFS_CANMOUNT_OFF) { 3110 if (!explicit) 3111 return (0); 3112 3113 (void) fprintf(stderr, gettext("cannot %s '%s': " 3114 "'canmount' property is set to 'off'\n"), cmdname, 3115 zfs_get_name(zhp)); 3116 return (1); 3117 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) { 3118 return (0); 3119 } 3120 3121 /* 3122 * At this point, we have verified that the mountpoint and/or 3123 * shareopts are appropriate for auto management. If the 3124 * filesystem is already mounted or shared, return (failing 3125 * for explicit requests); otherwise mount or share the 3126 * filesystem. 3127 */ 3128 switch (op) { 3129 case OP_SHARE: 3130 3131 shared_nfs = zfs_is_shared_nfs(zhp, NULL); 3132 shared_smb = zfs_is_shared_smb(zhp, NULL); 3133 3134 if (shared_nfs && shared_smb || 3135 (shared_nfs && strcmp(shareopts, "on") == 0 && 3136 strcmp(smbshareopts, "off") == 0) || 3137 (shared_smb && strcmp(smbshareopts, "on") == 0 && 3138 strcmp(shareopts, "off") == 0)) { 3139 if (!explicit) 3140 return (0); 3141 3142 (void) fprintf(stderr, gettext("cannot share " 3143 "'%s': filesystem already shared\n"), 3144 zfs_get_name(zhp)); 3145 return (1); 3146 } 3147 3148 if (!zfs_is_mounted(zhp, NULL) && 3149 zfs_mount(zhp, NULL, 0) != 0) 3150 return (1); 3151 3152 if (protocol == NULL) { 3153 if (zfs_shareall(zhp) != 0) 3154 return (1); 3155 } else if (strcmp(protocol, "nfs") == 0) { 3156 if (zfs_share_nfs(zhp)) 3157 return (1); 3158 } else if (strcmp(protocol, "smb") == 0) { 3159 if (zfs_share_smb(zhp)) 3160 return (1); 3161 } else { 3162 (void) fprintf(stderr, gettext("cannot share " 3163 "'%s': invalid share type '%s' " 3164 "specified\n"), 3165 zfs_get_name(zhp), protocol); 3166 return (1); 3167 } 3168 3169 break; 3170 3171 case OP_MOUNT: 3172 if (options == NULL) 3173 mnt.mnt_mntopts = ""; 3174 else 3175 mnt.mnt_mntopts = (char *)options; 3176 3177 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) && 3178 zfs_is_mounted(zhp, NULL)) { 3179 if (!explicit) 3180 return (0); 3181 3182 (void) fprintf(stderr, gettext("cannot mount " 3183 "'%s': filesystem already mounted\n"), 3184 zfs_get_name(zhp)); 3185 return (1); 3186 } 3187 3188 if (zfs_mount(zhp, options, flags) != 0) 3189 return (1); 3190 break; 3191 } 3192 } else { 3193 assert(op == OP_SHARE); 3194 3195 /* 3196 * Ignore any volumes that aren't shared. 3197 */ 3198 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts, 3199 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3200 3201 if (strcmp(shareopts, "off") == 0) { 3202 if (!explicit) 3203 return (0); 3204 3205 (void) fprintf(stderr, gettext("cannot share '%s': " 3206 "'shareiscsi' property not set\n"), 3207 zfs_get_name(zhp)); 3208 (void) fprintf(stderr, gettext("set 'shareiscsi' " 3209 "property or use iscsitadm(1M) to share this " 3210 "volume\n")); 3211 return (1); 3212 } 3213 3214 if (zfs_is_shared_iscsi(zhp)) { 3215 if (!explicit) 3216 return (0); 3217 3218 (void) fprintf(stderr, gettext("cannot share " 3219 "'%s': volume already shared\n"), 3220 zfs_get_name(zhp)); 3221 return (1); 3222 } 3223 3224 if (zfs_share_iscsi(zhp) != 0) 3225 return (1); 3226 } 3227 3228 return (0); 3229 } 3230 3231 /* 3232 * Reports progress in the form "(current/total)". Not thread-safe. 3233 */ 3234 static void 3235 report_mount_progress(int current, int total) 3236 { 3237 static int len; 3238 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b" 3239 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"; 3240 static time_t last_progress_time; 3241 time_t now = time(NULL); 3242 3243 /* report 1..n instead of 0..n-1 */ 3244 ++current; 3245 3246 /* display header if we're here for the first time */ 3247 if (current == 1) { 3248 (void) printf(gettext("Mounting ZFS filesystems: ")); 3249 len = 0; 3250 } else if (current != total && last_progress_time + MOUNT_TIME >= now) { 3251 /* too soon to report again */ 3252 return; 3253 } 3254 3255 last_progress_time = now; 3256 3257 /* back up to prepare for overwriting */ 3258 if (len) 3259 (void) printf("%*.*s", len, len, reverse); 3260 3261 /* We put a newline at the end if this is the last one. */ 3262 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : ""); 3263 (void) fflush(stdout); 3264 } 3265 3266 static void 3267 append_options(char *mntopts, char *newopts) 3268 { 3269 int len = strlen(mntopts); 3270 3271 /* original length plus new string to append plus 1 for the comma */ 3272 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) { 3273 (void) fprintf(stderr, gettext("the opts argument for " 3274 "'%c' option is too long (more than %d chars)\n"), 3275 "-o", MNT_LINE_MAX); 3276 usage(B_FALSE); 3277 } 3278 3279 if (*mntopts) 3280 mntopts[len++] = ','; 3281 3282 (void) strcpy(&mntopts[len], newopts); 3283 } 3284 3285 static int 3286 share_mount(int op, int argc, char **argv) 3287 { 3288 int do_all = 0; 3289 boolean_t verbose = B_FALSE; 3290 int c, ret = 0; 3291 char *options = NULL; 3292 int types, flags = 0; 3293 3294 /* check options */ 3295 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a")) 3296 != -1) { 3297 switch (c) { 3298 case 'a': 3299 do_all = 1; 3300 break; 3301 case 'v': 3302 verbose = B_TRUE; 3303 break; 3304 case 'o': 3305 if (*optarg == '\0') { 3306 (void) fprintf(stderr, gettext("empty mount " 3307 "options (-o) specified\n")); 3308 usage(B_FALSE); 3309 } 3310 3311 if (options == NULL) 3312 options = safe_malloc(MNT_LINE_MAX + 1); 3313 3314 /* option validation is done later */ 3315 append_options(options, optarg); 3316 break; 3317 3318 case 'O': 3319 flags |= MS_OVERLAY; 3320 break; 3321 case ':': 3322 (void) fprintf(stderr, gettext("missing argument for " 3323 "'%c' option\n"), optopt); 3324 usage(B_FALSE); 3325 break; 3326 case '?': 3327 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3328 optopt); 3329 usage(B_FALSE); 3330 } 3331 } 3332 3333 argc -= optind; 3334 argv += optind; 3335 3336 /* check number of arguments */ 3337 if (do_all) { 3338 zfs_handle_t **dslist = NULL; 3339 size_t i, count = 0; 3340 char *protocol = NULL; 3341 3342 if (op == OP_MOUNT) { 3343 types = ZFS_TYPE_FILESYSTEM; 3344 } else if (argc > 0) { 3345 if (strcmp(argv[0], "nfs") == 0 || 3346 strcmp(argv[0], "smb") == 0) { 3347 types = ZFS_TYPE_FILESYSTEM; 3348 } else if (strcmp(argv[0], "iscsi") == 0) { 3349 types = ZFS_TYPE_VOLUME; 3350 } else { 3351 (void) fprintf(stderr, gettext("share type " 3352 "must be 'nfs', 'smb' or 'iscsi'\n")); 3353 usage(B_FALSE); 3354 } 3355 protocol = argv[0]; 3356 argc--; 3357 argv++; 3358 } else { 3359 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME; 3360 } 3361 3362 if (argc != 0) { 3363 (void) fprintf(stderr, gettext("too many arguments\n")); 3364 usage(B_FALSE); 3365 } 3366 3367 get_all_datasets(types, &dslist, &count, verbose); 3368 3369 if (count == 0) 3370 return (0); 3371 3372 qsort(dslist, count, sizeof (void *), dataset_cmp); 3373 3374 for (i = 0; i < count; i++) { 3375 if (verbose) 3376 report_mount_progress(i, count); 3377 3378 if (share_mount_one(dslist[i], op, flags, protocol, 3379 B_FALSE, options) != 0) 3380 ret = 1; 3381 zfs_close(dslist[i]); 3382 } 3383 3384 free(dslist); 3385 } else if (argc == 0) { 3386 struct mnttab entry; 3387 3388 if ((op == OP_SHARE) || (options != NULL)) { 3389 (void) fprintf(stderr, gettext("missing filesystem " 3390 "argument (specify -a for all)\n")); 3391 usage(B_FALSE); 3392 } 3393 3394 /* 3395 * When mount is given no arguments, go through /etc/mnttab and 3396 * display any active ZFS mounts. We hide any snapshots, since 3397 * they are controlled automatically. 3398 */ 3399 rewind(mnttab_file); 3400 while (getmntent(mnttab_file, &entry) == 0) { 3401 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 || 3402 strchr(entry.mnt_special, '@') != NULL) 3403 continue; 3404 3405 (void) printf("%-30s %s\n", entry.mnt_special, 3406 entry.mnt_mountp); 3407 } 3408 3409 } else { 3410 zfs_handle_t *zhp; 3411 3412 types = ZFS_TYPE_FILESYSTEM; 3413 if (op == OP_SHARE) 3414 types |= ZFS_TYPE_VOLUME; 3415 3416 if (argc > 1) { 3417 (void) fprintf(stderr, 3418 gettext("too many arguments\n")); 3419 usage(B_FALSE); 3420 } 3421 3422 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) { 3423 ret = 1; 3424 } else { 3425 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE, 3426 options); 3427 zfs_close(zhp); 3428 } 3429 } 3430 3431 return (ret); 3432 } 3433 3434 /* 3435 * zfs mount -a [nfs | iscsi] 3436 * zfs mount filesystem 3437 * 3438 * Mount all filesystems, or mount the given filesystem. 3439 */ 3440 static int 3441 zfs_do_mount(int argc, char **argv) 3442 { 3443 return (share_mount(OP_MOUNT, argc, argv)); 3444 } 3445 3446 /* 3447 * zfs share -a [nfs | iscsi | smb] 3448 * zfs share filesystem 3449 * 3450 * Share all filesystems, or share the given filesystem. 3451 */ 3452 static int 3453 zfs_do_share(int argc, char **argv) 3454 { 3455 return (share_mount(OP_SHARE, argc, argv)); 3456 } 3457 3458 typedef struct unshare_unmount_node { 3459 zfs_handle_t *un_zhp; 3460 char *un_mountp; 3461 uu_avl_node_t un_avlnode; 3462 } unshare_unmount_node_t; 3463 3464 /* ARGSUSED */ 3465 static int 3466 unshare_unmount_compare(const void *larg, const void *rarg, void *unused) 3467 { 3468 const unshare_unmount_node_t *l = larg; 3469 const unshare_unmount_node_t *r = rarg; 3470 3471 return (strcmp(l->un_mountp, r->un_mountp)); 3472 } 3473 3474 /* 3475 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an 3476 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem, 3477 * and unmount it appropriately. 3478 */ 3479 static int 3480 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual) 3481 { 3482 zfs_handle_t *zhp; 3483 int ret; 3484 struct stat64 statbuf; 3485 struct extmnttab entry; 3486 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount"; 3487 ino_t path_inode; 3488 3489 /* 3490 * Search for the path in /etc/mnttab. Rather than looking for the 3491 * specific path, which can be fooled by non-standard paths (i.e. ".." 3492 * or "//"), we stat() the path and search for the corresponding 3493 * (major,minor) device pair. 3494 */ 3495 if (stat64(path, &statbuf) != 0) { 3496 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3497 cmdname, path, strerror(errno)); 3498 return (1); 3499 } 3500 path_inode = statbuf.st_ino; 3501 3502 /* 3503 * Search for the given (major,minor) pair in the mount table. 3504 */ 3505 rewind(mnttab_file); 3506 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) { 3507 if (entry.mnt_major == major(statbuf.st_dev) && 3508 entry.mnt_minor == minor(statbuf.st_dev)) 3509 break; 3510 } 3511 if (ret != 0) { 3512 if (op == OP_SHARE) { 3513 (void) fprintf(stderr, gettext("cannot %s '%s': not " 3514 "currently mounted\n"), cmdname, path); 3515 return (1); 3516 } 3517 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"), 3518 path); 3519 if ((ret = umount2(path, flags)) != 0) 3520 (void) fprintf(stderr, gettext("%s: %s\n"), path, 3521 strerror(errno)); 3522 return (ret != 0); 3523 } 3524 3525 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) { 3526 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS " 3527 "filesystem\n"), cmdname, path); 3528 return (1); 3529 } 3530 3531 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3532 ZFS_TYPE_FILESYSTEM)) == NULL) 3533 return (1); 3534 3535 ret = 1; 3536 if (stat64(entry.mnt_mountp, &statbuf) != 0) { 3537 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3538 cmdname, path, strerror(errno)); 3539 goto out; 3540 } else if (statbuf.st_ino != path_inode) { 3541 (void) fprintf(stderr, gettext("cannot " 3542 "%s '%s': not a mountpoint\n"), cmdname, path); 3543 goto out; 3544 } 3545 3546 if (op == OP_SHARE) { 3547 char nfs_mnt_prop[ZFS_MAXPROPLEN]; 3548 char smbshare_prop[ZFS_MAXPROPLEN]; 3549 3550 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop, 3551 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0); 3552 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop, 3553 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0); 3554 3555 if (strcmp(nfs_mnt_prop, "off") == 0 && 3556 strcmp(smbshare_prop, "off") == 0) { 3557 (void) fprintf(stderr, gettext("cannot unshare " 3558 "'%s': legacy share\n"), path); 3559 (void) fprintf(stderr, gettext("use " 3560 "unshare(1M) to unshare this filesystem\n")); 3561 } else if (!zfs_is_shared(zhp)) { 3562 (void) fprintf(stderr, gettext("cannot unshare '%s': " 3563 "not currently shared\n"), path); 3564 } else { 3565 ret = zfs_unshareall_bypath(zhp, path); 3566 } 3567 } else { 3568 char mtpt_prop[ZFS_MAXPROPLEN]; 3569 3570 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop, 3571 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0); 3572 3573 if (is_manual) { 3574 ret = zfs_unmount(zhp, NULL, flags); 3575 } else if (strcmp(mtpt_prop, "legacy") == 0) { 3576 (void) fprintf(stderr, gettext("cannot unmount " 3577 "'%s': legacy mountpoint\n"), 3578 zfs_get_name(zhp)); 3579 (void) fprintf(stderr, gettext("use umount(1M) " 3580 "to unmount this filesystem\n")); 3581 } else { 3582 ret = zfs_unmountall(zhp, flags); 3583 } 3584 } 3585 3586 out: 3587 zfs_close(zhp); 3588 3589 return (ret != 0); 3590 } 3591 3592 /* 3593 * Generic callback for unsharing or unmounting a filesystem. 3594 */ 3595 static int 3596 unshare_unmount(int op, int argc, char **argv) 3597 { 3598 int do_all = 0; 3599 int flags = 0; 3600 int ret = 0; 3601 int types, c; 3602 zfs_handle_t *zhp; 3603 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN]; 3604 char sharesmb[ZFS_MAXPROPLEN]; 3605 3606 /* check options */ 3607 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) { 3608 switch (c) { 3609 case 'a': 3610 do_all = 1; 3611 break; 3612 case 'f': 3613 flags = MS_FORCE; 3614 break; 3615 case '?': 3616 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3617 optopt); 3618 usage(B_FALSE); 3619 } 3620 } 3621 3622 argc -= optind; 3623 argv += optind; 3624 3625 if (do_all) { 3626 /* 3627 * We could make use of zfs_for_each() to walk all datasets in 3628 * the system, but this would be very inefficient, especially 3629 * since we would have to linearly search /etc/mnttab for each 3630 * one. Instead, do one pass through /etc/mnttab looking for 3631 * zfs entries and call zfs_unmount() for each one. 3632 * 3633 * Things get a little tricky if the administrator has created 3634 * mountpoints beneath other ZFS filesystems. In this case, we 3635 * have to unmount the deepest filesystems first. To accomplish 3636 * this, we place all the mountpoints in an AVL tree sorted by 3637 * the special type (dataset name), and walk the result in 3638 * reverse to make sure to get any snapshots first. 3639 */ 3640 struct mnttab entry; 3641 uu_avl_pool_t *pool; 3642 uu_avl_t *tree; 3643 unshare_unmount_node_t *node; 3644 uu_avl_index_t idx; 3645 uu_avl_walk_t *walk; 3646 3647 if (argc != 0) { 3648 (void) fprintf(stderr, gettext("too many arguments\n")); 3649 usage(B_FALSE); 3650 } 3651 3652 if ((pool = uu_avl_pool_create("unmount_pool", 3653 sizeof (unshare_unmount_node_t), 3654 offsetof(unshare_unmount_node_t, un_avlnode), 3655 unshare_unmount_compare, 3656 UU_DEFAULT)) == NULL) { 3657 (void) fprintf(stderr, gettext("internal error: " 3658 "out of memory\n")); 3659 exit(1); 3660 } 3661 3662 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) { 3663 (void) fprintf(stderr, gettext("internal error: " 3664 "out of memory\n")); 3665 exit(1); 3666 } 3667 3668 rewind(mnttab_file); 3669 while (getmntent(mnttab_file, &entry) == 0) { 3670 3671 /* ignore non-ZFS entries */ 3672 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 3673 continue; 3674 3675 /* ignore snapshots */ 3676 if (strchr(entry.mnt_special, '@') != NULL) 3677 continue; 3678 3679 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3680 ZFS_TYPE_FILESYSTEM)) == NULL) { 3681 ret = 1; 3682 continue; 3683 } 3684 3685 switch (op) { 3686 case OP_SHARE: 3687 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3688 nfsiscsi_mnt_prop, 3689 sizeof (nfsiscsi_mnt_prop), 3690 NULL, NULL, 0, B_FALSE) == 0); 3691 if (strcmp(nfsiscsi_mnt_prop, "off") != 0) 3692 break; 3693 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3694 nfsiscsi_mnt_prop, 3695 sizeof (nfsiscsi_mnt_prop), 3696 NULL, NULL, 0, B_FALSE) == 0); 3697 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) 3698 continue; 3699 break; 3700 case OP_MOUNT: 3701 /* Ignore legacy mounts */ 3702 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, 3703 nfsiscsi_mnt_prop, 3704 sizeof (nfsiscsi_mnt_prop), 3705 NULL, NULL, 0, B_FALSE) == 0); 3706 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) 3707 continue; 3708 /* Ignore canmount=noauto mounts */ 3709 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == 3710 ZFS_CANMOUNT_NOAUTO) 3711 continue; 3712 default: 3713 break; 3714 } 3715 3716 node = safe_malloc(sizeof (unshare_unmount_node_t)); 3717 node->un_zhp = zhp; 3718 3719 if ((node->un_mountp = strdup(entry.mnt_mountp)) == 3720 NULL) { 3721 (void) fprintf(stderr, gettext("internal error:" 3722 " out of memory\n")); 3723 exit(1); 3724 } 3725 3726 uu_avl_node_init(node, &node->un_avlnode, pool); 3727 3728 if (uu_avl_find(tree, node, NULL, &idx) == NULL) { 3729 uu_avl_insert(tree, node, idx); 3730 } else { 3731 zfs_close(node->un_zhp); 3732 free(node->un_mountp); 3733 free(node); 3734 } 3735 } 3736 3737 /* 3738 * Walk the AVL tree in reverse, unmounting each filesystem and 3739 * removing it from the AVL tree in the process. 3740 */ 3741 if ((walk = uu_avl_walk_start(tree, 3742 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) { 3743 (void) fprintf(stderr, 3744 gettext("internal error: out of memory")); 3745 exit(1); 3746 } 3747 3748 while ((node = uu_avl_walk_next(walk)) != NULL) { 3749 uu_avl_remove(tree, node); 3750 3751 switch (op) { 3752 case OP_SHARE: 3753 if (zfs_unshareall_bypath(node->un_zhp, 3754 node->un_mountp) != 0) 3755 ret = 1; 3756 break; 3757 3758 case OP_MOUNT: 3759 if (zfs_unmount(node->un_zhp, 3760 node->un_mountp, flags) != 0) 3761 ret = 1; 3762 break; 3763 } 3764 3765 zfs_close(node->un_zhp); 3766 free(node->un_mountp); 3767 free(node); 3768 } 3769 3770 uu_avl_walk_end(walk); 3771 uu_avl_destroy(tree); 3772 uu_avl_pool_destroy(pool); 3773 3774 if (op == OP_SHARE) { 3775 /* 3776 * Finally, unshare any volumes shared via iSCSI. 3777 */ 3778 zfs_handle_t **dslist = NULL; 3779 size_t i, count = 0; 3780 3781 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count, 3782 B_FALSE); 3783 3784 if (count != 0) { 3785 qsort(dslist, count, sizeof (void *), 3786 dataset_cmp); 3787 3788 for (i = 0; i < count; i++) { 3789 if (zfs_unshare_iscsi(dslist[i]) != 0) 3790 ret = 1; 3791 zfs_close(dslist[i]); 3792 } 3793 3794 free(dslist); 3795 } 3796 } 3797 } else { 3798 if (argc != 1) { 3799 if (argc == 0) 3800 (void) fprintf(stderr, 3801 gettext("missing filesystem argument\n")); 3802 else 3803 (void) fprintf(stderr, 3804 gettext("too many arguments\n")); 3805 usage(B_FALSE); 3806 } 3807 3808 /* 3809 * We have an argument, but it may be a full path or a ZFS 3810 * filesystem. Pass full paths off to unmount_path() (shared by 3811 * manual_unmount), otherwise open the filesystem and pass to 3812 * zfs_unmount(). 3813 */ 3814 if (argv[0][0] == '/') 3815 return (unshare_unmount_path(op, argv[0], 3816 flags, B_FALSE)); 3817 3818 types = ZFS_TYPE_FILESYSTEM; 3819 if (op == OP_SHARE) 3820 types |= ZFS_TYPE_VOLUME; 3821 3822 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) 3823 return (1); 3824 3825 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 3826 verify(zfs_prop_get(zhp, op == OP_SHARE ? 3827 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, 3828 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL, 3829 NULL, 0, B_FALSE) == 0); 3830 3831 switch (op) { 3832 case OP_SHARE: 3833 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3834 nfsiscsi_mnt_prop, 3835 sizeof (nfsiscsi_mnt_prop), 3836 NULL, NULL, 0, B_FALSE) == 0); 3837 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3838 sharesmb, sizeof (sharesmb), NULL, NULL, 3839 0, B_FALSE) == 0); 3840 3841 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 && 3842 strcmp(sharesmb, "off") == 0) { 3843 (void) fprintf(stderr, gettext("cannot " 3844 "unshare '%s': legacy share\n"), 3845 zfs_get_name(zhp)); 3846 (void) fprintf(stderr, gettext("use " 3847 "unshare(1M) to unshare this " 3848 "filesystem\n")); 3849 ret = 1; 3850 } else if (!zfs_is_shared(zhp)) { 3851 (void) fprintf(stderr, gettext("cannot " 3852 "unshare '%s': not currently " 3853 "shared\n"), zfs_get_name(zhp)); 3854 ret = 1; 3855 } else if (zfs_unshareall(zhp) != 0) { 3856 ret = 1; 3857 } 3858 break; 3859 3860 case OP_MOUNT: 3861 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) { 3862 (void) fprintf(stderr, gettext("cannot " 3863 "unmount '%s': legacy " 3864 "mountpoint\n"), zfs_get_name(zhp)); 3865 (void) fprintf(stderr, gettext("use " 3866 "umount(1M) to unmount this " 3867 "filesystem\n")); 3868 ret = 1; 3869 } else if (!zfs_is_mounted(zhp, NULL)) { 3870 (void) fprintf(stderr, gettext("cannot " 3871 "unmount '%s': not currently " 3872 "mounted\n"), 3873 zfs_get_name(zhp)); 3874 ret = 1; 3875 } else if (zfs_unmountall(zhp, flags) != 0) { 3876 ret = 1; 3877 } 3878 break; 3879 } 3880 } else { 3881 assert(op == OP_SHARE); 3882 3883 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, 3884 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), 3885 NULL, NULL, 0, B_FALSE) == 0); 3886 3887 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) { 3888 (void) fprintf(stderr, gettext("cannot unshare " 3889 "'%s': 'shareiscsi' property not set\n"), 3890 zfs_get_name(zhp)); 3891 (void) fprintf(stderr, gettext("set " 3892 "'shareiscsi' property or use " 3893 "iscsitadm(1M) to share this volume\n")); 3894 ret = 1; 3895 } else if (!zfs_is_shared_iscsi(zhp)) { 3896 (void) fprintf(stderr, gettext("cannot " 3897 "unshare '%s': not currently shared\n"), 3898 zfs_get_name(zhp)); 3899 ret = 1; 3900 } else if (zfs_unshare_iscsi(zhp) != 0) { 3901 ret = 1; 3902 } 3903 } 3904 3905 zfs_close(zhp); 3906 } 3907 3908 return (ret); 3909 } 3910 3911 /* 3912 * zfs unmount -a 3913 * zfs unmount filesystem 3914 * 3915 * Unmount all filesystems, or a specific ZFS filesystem. 3916 */ 3917 static int 3918 zfs_do_unmount(int argc, char **argv) 3919 { 3920 return (unshare_unmount(OP_MOUNT, argc, argv)); 3921 } 3922 3923 /* 3924 * zfs unshare -a 3925 * zfs unshare filesystem 3926 * 3927 * Unshare all filesystems, or a specific ZFS filesystem. 3928 */ 3929 static int 3930 zfs_do_unshare(int argc, char **argv) 3931 { 3932 return (unshare_unmount(OP_SHARE, argc, argv)); 3933 } 3934 3935 /* ARGSUSED */ 3936 static int 3937 zfs_do_python(int argc, char **argv) 3938 { 3939 (void) execv(pypath, argv-1); 3940 (void) printf("internal error: %s not found\n", pypath); 3941 return (-1); 3942 } 3943 3944 /* 3945 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is 3946 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'. 3947 */ 3948 static int 3949 manual_mount(int argc, char **argv) 3950 { 3951 zfs_handle_t *zhp; 3952 char mountpoint[ZFS_MAXPROPLEN]; 3953 char mntopts[MNT_LINE_MAX] = { '\0' }; 3954 int ret; 3955 int c; 3956 int flags = 0; 3957 char *dataset, *path; 3958 3959 /* check options */ 3960 while ((c = getopt(argc, argv, ":mo:O")) != -1) { 3961 switch (c) { 3962 case 'o': 3963 (void) strlcpy(mntopts, optarg, sizeof (mntopts)); 3964 break; 3965 case 'O': 3966 flags |= MS_OVERLAY; 3967 break; 3968 case 'm': 3969 flags |= MS_NOMNTTAB; 3970 break; 3971 case ':': 3972 (void) fprintf(stderr, gettext("missing argument for " 3973 "'%c' option\n"), optopt); 3974 usage(B_FALSE); 3975 break; 3976 case '?': 3977 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3978 optopt); 3979 (void) fprintf(stderr, gettext("usage: mount [-o opts] " 3980 "<path>\n")); 3981 return (2); 3982 } 3983 } 3984 3985 argc -= optind; 3986 argv += optind; 3987 3988 /* check that we only have two arguments */ 3989 if (argc != 2) { 3990 if (argc == 0) 3991 (void) fprintf(stderr, gettext("missing dataset " 3992 "argument\n")); 3993 else if (argc == 1) 3994 (void) fprintf(stderr, 3995 gettext("missing mountpoint argument\n")); 3996 else 3997 (void) fprintf(stderr, gettext("too many arguments\n")); 3998 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n"); 3999 return (2); 4000 } 4001 4002 dataset = argv[0]; 4003 path = argv[1]; 4004 4005 /* try to open the dataset */ 4006 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL) 4007 return (1); 4008 4009 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 4010 sizeof (mountpoint), NULL, NULL, 0, B_FALSE); 4011 4012 /* check for legacy mountpoint and complain appropriately */ 4013 ret = 0; 4014 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) { 4015 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS, 4016 NULL, 0, mntopts, sizeof (mntopts)) != 0) { 4017 (void) fprintf(stderr, gettext("mount failed: %s\n"), 4018 strerror(errno)); 4019 ret = 1; 4020 } 4021 } else { 4022 (void) fprintf(stderr, gettext("filesystem '%s' cannot be " 4023 "mounted using 'mount -F zfs'\n"), dataset); 4024 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' " 4025 "instead.\n"), path); 4026 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' " 4027 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n")); 4028 (void) fprintf(stderr, gettext("See zfs(1M) for more " 4029 "information.\n")); 4030 ret = 1; 4031 } 4032 4033 return (ret); 4034 } 4035 4036 /* 4037 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow 4038 * unmounts of non-legacy filesystems, as this is the dominant administrative 4039 * interface. 4040 */ 4041 static int 4042 manual_unmount(int argc, char **argv) 4043 { 4044 int flags = 0; 4045 int c; 4046 4047 /* check options */ 4048 while ((c = getopt(argc, argv, "f")) != -1) { 4049 switch (c) { 4050 case 'f': 4051 flags = MS_FORCE; 4052 break; 4053 case '?': 4054 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 4055 optopt); 4056 (void) fprintf(stderr, gettext("usage: unmount [-f] " 4057 "<path>\n")); 4058 return (2); 4059 } 4060 } 4061 4062 argc -= optind; 4063 argv += optind; 4064 4065 /* check arguments */ 4066 if (argc != 1) { 4067 if (argc == 0) 4068 (void) fprintf(stderr, gettext("missing path " 4069 "argument\n")); 4070 else 4071 (void) fprintf(stderr, gettext("too many arguments\n")); 4072 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n")); 4073 return (2); 4074 } 4075 4076 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE)); 4077 } 4078 4079 static int 4080 find_command_idx(char *command, int *idx) 4081 { 4082 int i; 4083 4084 for (i = 0; i < NCOMMAND; i++) { 4085 if (command_table[i].name == NULL) 4086 continue; 4087 4088 if (strcmp(command, command_table[i].name) == 0) { 4089 *idx = i; 4090 return (0); 4091 } 4092 } 4093 return (1); 4094 } 4095 4096 int 4097 main(int argc, char **argv) 4098 { 4099 int ret; 4100 int i; 4101 char *progname; 4102 char *cmdname; 4103 4104 (void) setlocale(LC_ALL, ""); 4105 (void) textdomain(TEXT_DOMAIN); 4106 4107 opterr = 0; 4108 4109 if ((g_zfs = libzfs_init()) == NULL) { 4110 (void) fprintf(stderr, gettext("internal error: failed to " 4111 "initialize ZFS library\n")); 4112 return (1); 4113 } 4114 4115 zpool_set_history_str("zfs", argc, argv, history_str); 4116 verify(zpool_stage_history(g_zfs, history_str) == 0); 4117 4118 libzfs_print_on_error(g_zfs, B_TRUE); 4119 4120 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) { 4121 (void) fprintf(stderr, gettext("internal error: unable to " 4122 "open %s\n"), MNTTAB); 4123 return (1); 4124 } 4125 4126 /* 4127 * This command also doubles as the /etc/fs mount and unmount program. 4128 * Determine if we should take this behavior based on argv[0]. 4129 */ 4130 progname = basename(argv[0]); 4131 if (strcmp(progname, "mount") == 0) { 4132 ret = manual_mount(argc, argv); 4133 } else if (strcmp(progname, "umount") == 0) { 4134 ret = manual_unmount(argc, argv); 4135 } else { 4136 /* 4137 * Make sure the user has specified some command. 4138 */ 4139 if (argc < 2) { 4140 (void) fprintf(stderr, gettext("missing command\n")); 4141 usage(B_FALSE); 4142 } 4143 4144 cmdname = argv[1]; 4145 4146 /* 4147 * The 'umount' command is an alias for 'unmount' 4148 */ 4149 if (strcmp(cmdname, "umount") == 0) 4150 cmdname = "unmount"; 4151 4152 /* 4153 * The 'recv' command is an alias for 'receive' 4154 */ 4155 if (strcmp(cmdname, "recv") == 0) 4156 cmdname = "receive"; 4157 4158 /* 4159 * Special case '-?' 4160 */ 4161 if (strcmp(cmdname, "-?") == 0) 4162 usage(B_TRUE); 4163 4164 /* 4165 * Run the appropriate command. 4166 */ 4167 libzfs_mnttab_cache(g_zfs, B_TRUE); 4168 if (find_command_idx(cmdname, &i) == 0) { 4169 current_command = &command_table[i]; 4170 ret = command_table[i].func(argc - 1, argv + 1); 4171 } else if (strchr(cmdname, '=') != NULL) { 4172 verify(find_command_idx("set", &i) == 0); 4173 current_command = &command_table[i]; 4174 ret = command_table[i].func(argc, argv); 4175 } else { 4176 (void) fprintf(stderr, gettext("unrecognized " 4177 "command '%s'\n"), cmdname); 4178 usage(B_FALSE); 4179 } 4180 libzfs_mnttab_cache(g_zfs, B_FALSE); 4181 } 4182 4183 (void) fclose(mnttab_file); 4184 4185 libzfs_fini(g_zfs); 4186 4187 /* 4188 * The 'ZFS_ABORT' environment variable causes us to dump core on exit 4189 * for the purposes of running ::findleaks. 4190 */ 4191 if (getenv("ZFS_ABORT") != NULL) { 4192 (void) printf("dumping core by request\n"); 4193 abort(); 4194 } 4195 4196 return (ret); 4197 } 4198