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 } else if (!zfs_prop_user(propname)) { 1509 (void) fprintf(stderr, gettext("invalid property '%s'\n"), 1510 propname); 1511 usage(B_FALSE); 1512 } 1513 1514 cb.cb_propname = propname; 1515 cb.cb_received = received; 1516 1517 if (flags & ZFS_ITER_RECURSE) { 1518 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, 1519 NULL, NULL, 0, inherit_recurse_cb, &cb); 1520 } else { 1521 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, 1522 NULL, NULL, 0, inherit_cb, &cb); 1523 } 1524 1525 return (ret); 1526 } 1527 1528 typedef struct upgrade_cbdata { 1529 uint64_t cb_numupgraded; 1530 uint64_t cb_numsamegraded; 1531 uint64_t cb_numfailed; 1532 uint64_t cb_version; 1533 boolean_t cb_newer; 1534 boolean_t cb_foundone; 1535 char cb_lastfs[ZFS_MAXNAMELEN]; 1536 } upgrade_cbdata_t; 1537 1538 static int 1539 same_pool(zfs_handle_t *zhp, const char *name) 1540 { 1541 int len1 = strcspn(name, "/@"); 1542 const char *zhname = zfs_get_name(zhp); 1543 int len2 = strcspn(zhname, "/@"); 1544 1545 if (len1 != len2) 1546 return (B_FALSE); 1547 return (strncmp(name, zhname, len1) == 0); 1548 } 1549 1550 static int 1551 upgrade_list_callback(zfs_handle_t *zhp, void *data) 1552 { 1553 upgrade_cbdata_t *cb = data; 1554 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1555 1556 /* list if it's old/new */ 1557 if ((!cb->cb_newer && version < ZPL_VERSION) || 1558 (cb->cb_newer && version > ZPL_VERSION)) { 1559 char *str; 1560 if (cb->cb_newer) { 1561 str = gettext("The following filesystems are " 1562 "formatted using a newer software version and\n" 1563 "cannot be accessed on the current system.\n\n"); 1564 } else { 1565 str = gettext("The following filesystems are " 1566 "out of date, and can be upgraded. After being\n" 1567 "upgraded, these filesystems (and any 'zfs send' " 1568 "streams generated from\n" 1569 "subsequent snapshots) will no longer be " 1570 "accessible by older software versions.\n\n"); 1571 } 1572 1573 if (!cb->cb_foundone) { 1574 (void) puts(str); 1575 (void) printf(gettext("VER FILESYSTEM\n")); 1576 (void) printf(gettext("--- ------------\n")); 1577 cb->cb_foundone = B_TRUE; 1578 } 1579 1580 (void) printf("%2u %s\n", version, zfs_get_name(zhp)); 1581 } 1582 1583 return (0); 1584 } 1585 1586 static int 1587 upgrade_set_callback(zfs_handle_t *zhp, void *data) 1588 { 1589 upgrade_cbdata_t *cb = data; 1590 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1591 int i; 1592 static struct { int zplver; int spaver; } table[] = { 1593 {ZPL_VERSION_FUID, SPA_VERSION_FUID}, 1594 {ZPL_VERSION_USERSPACE, SPA_VERSION_USERSPACE}, 1595 {0, 0} 1596 }; 1597 1598 1599 for (i = 0; table[i].zplver; i++) { 1600 if (cb->cb_version >= table[i].zplver) { 1601 int spa_version; 1602 1603 if (zfs_spa_version(zhp, &spa_version) < 0) 1604 return (-1); 1605 1606 if (spa_version < table[i].spaver) { 1607 /* can't upgrade */ 1608 (void) printf(gettext("%s: can not be " 1609 "upgraded; the pool version needs to first " 1610 "be upgraded\nto version %d\n\n"), 1611 zfs_get_name(zhp), table[i].spaver); 1612 cb->cb_numfailed++; 1613 return (0); 1614 } 1615 } 1616 } 1617 1618 /* upgrade */ 1619 if (version < cb->cb_version) { 1620 char verstr[16]; 1621 (void) snprintf(verstr, sizeof (verstr), 1622 "%llu", cb->cb_version); 1623 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) { 1624 /* 1625 * If they did "zfs upgrade -a", then we could 1626 * be doing ioctls to different pools. We need 1627 * to log this history once to each pool. 1628 */ 1629 verify(zpool_stage_history(g_zfs, history_str) == 0); 1630 } 1631 if (zfs_prop_set(zhp, "version", verstr) == 0) 1632 cb->cb_numupgraded++; 1633 else 1634 cb->cb_numfailed++; 1635 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp)); 1636 } else if (version > cb->cb_version) { 1637 /* can't downgrade */ 1638 (void) printf(gettext("%s: can not be downgraded; " 1639 "it is already at version %u\n"), 1640 zfs_get_name(zhp), version); 1641 cb->cb_numfailed++; 1642 } else { 1643 cb->cb_numsamegraded++; 1644 } 1645 return (0); 1646 } 1647 1648 /* 1649 * zfs upgrade 1650 * zfs upgrade -v 1651 * zfs upgrade [-r] [-V <version>] <-a | filesystem> 1652 */ 1653 static int 1654 zfs_do_upgrade(int argc, char **argv) 1655 { 1656 boolean_t all = B_FALSE; 1657 boolean_t showversions = B_FALSE; 1658 int ret; 1659 upgrade_cbdata_t cb = { 0 }; 1660 char c; 1661 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS; 1662 1663 /* check options */ 1664 while ((c = getopt(argc, argv, "rvV:a")) != -1) { 1665 switch (c) { 1666 case 'r': 1667 flags |= ZFS_ITER_RECURSE; 1668 break; 1669 case 'v': 1670 showversions = B_TRUE; 1671 break; 1672 case 'V': 1673 if (zfs_prop_string_to_index(ZFS_PROP_VERSION, 1674 optarg, &cb.cb_version) != 0) { 1675 (void) fprintf(stderr, 1676 gettext("invalid version %s\n"), optarg); 1677 usage(B_FALSE); 1678 } 1679 break; 1680 case 'a': 1681 all = B_TRUE; 1682 break; 1683 case '?': 1684 default: 1685 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1686 optopt); 1687 usage(B_FALSE); 1688 } 1689 } 1690 1691 argc -= optind; 1692 argv += optind; 1693 1694 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version)) 1695 usage(B_FALSE); 1696 if (showversions && (flags & ZFS_ITER_RECURSE || all || 1697 cb.cb_version || argc)) 1698 usage(B_FALSE); 1699 if ((all || argc) && (showversions)) 1700 usage(B_FALSE); 1701 if (all && argc) 1702 usage(B_FALSE); 1703 1704 if (showversions) { 1705 /* Show info on available versions. */ 1706 (void) printf(gettext("The following filesystem versions are " 1707 "supported:\n\n")); 1708 (void) printf(gettext("VER DESCRIPTION\n")); 1709 (void) printf("--- -----------------------------------------" 1710 "---------------\n"); 1711 (void) printf(gettext(" 1 Initial ZFS filesystem version\n")); 1712 (void) printf(gettext(" 2 Enhanced directory entries\n")); 1713 (void) printf(gettext(" 3 Case insensitive and File system " 1714 "unique identifier (FUID)\n")); 1715 (void) printf(gettext(" 4 userquota, groupquota " 1716 "properties\n")); 1717 (void) printf(gettext("\nFor more information on a particular " 1718 "version, including supported releases, see:\n\n")); 1719 (void) printf("http://www.opensolaris.org/os/community/zfs/" 1720 "version/zpl/N\n\n"); 1721 (void) printf(gettext("Where 'N' is the version number.\n")); 1722 ret = 0; 1723 } else if (argc || all) { 1724 /* Upgrade filesystems */ 1725 if (cb.cb_version == 0) 1726 cb.cb_version = ZPL_VERSION; 1727 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM, 1728 NULL, NULL, 0, upgrade_set_callback, &cb); 1729 (void) printf(gettext("%llu filesystems upgraded\n"), 1730 cb.cb_numupgraded); 1731 if (cb.cb_numsamegraded) { 1732 (void) printf(gettext("%llu filesystems already at " 1733 "this version\n"), 1734 cb.cb_numsamegraded); 1735 } 1736 if (cb.cb_numfailed != 0) 1737 ret = 1; 1738 } else { 1739 /* List old-version filesytems */ 1740 boolean_t found; 1741 (void) printf(gettext("This system is currently running " 1742 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION); 1743 1744 flags |= ZFS_ITER_RECURSE; 1745 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM, 1746 NULL, NULL, 0, upgrade_list_callback, &cb); 1747 1748 found = cb.cb_foundone; 1749 cb.cb_foundone = B_FALSE; 1750 cb.cb_newer = B_TRUE; 1751 1752 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM, 1753 NULL, NULL, 0, upgrade_list_callback, &cb); 1754 1755 if (!cb.cb_foundone && !found) { 1756 (void) printf(gettext("All filesystems are " 1757 "formatted with the current version.\n")); 1758 } 1759 } 1760 1761 return (ret); 1762 } 1763 1764 /* 1765 * zfs userspace 1766 */ 1767 static int 1768 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space) 1769 { 1770 zfs_userquota_prop_t *typep = arg; 1771 zfs_userquota_prop_t p = *typep; 1772 char *name = NULL; 1773 char *ug, *propname; 1774 char namebuf[32]; 1775 char sizebuf[32]; 1776 1777 if (domain == NULL || domain[0] == '\0') { 1778 if (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) { 1779 struct group *g = getgrgid(rid); 1780 if (g) 1781 name = g->gr_name; 1782 } else { 1783 struct passwd *p = getpwuid(rid); 1784 if (p) 1785 name = p->pw_name; 1786 } 1787 } 1788 1789 if (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) 1790 ug = "group"; 1791 else 1792 ug = "user"; 1793 1794 if (p == ZFS_PROP_USERUSED || p == ZFS_PROP_GROUPUSED) 1795 propname = "used"; 1796 else 1797 propname = "quota"; 1798 1799 if (name == NULL) { 1800 (void) snprintf(namebuf, sizeof (namebuf), 1801 "%llu", (longlong_t)rid); 1802 name = namebuf; 1803 } 1804 zfs_nicenum(space, sizebuf, sizeof (sizebuf)); 1805 1806 (void) printf("%s %s %s%c%s %s\n", propname, ug, domain, 1807 domain[0] ? '-' : ' ', name, sizebuf); 1808 1809 return (0); 1810 } 1811 1812 static int 1813 zfs_do_userspace(int argc, char **argv) 1814 { 1815 zfs_handle_t *zhp; 1816 zfs_userquota_prop_t p; 1817 int error; 1818 1819 /* 1820 * Try the python version. If the execv fails, we'll continue 1821 * and do a simplistic implementation. 1822 */ 1823 (void) execv(pypath, argv-1); 1824 1825 (void) printf("internal error: %s not found\n" 1826 "falling back on built-in implementation, " 1827 "some features will not work\n", pypath); 1828 1829 if ((zhp = zfs_open(g_zfs, argv[argc-1], ZFS_TYPE_DATASET)) == NULL) 1830 return (1); 1831 1832 (void) printf("PROP TYPE NAME VALUE\n"); 1833 1834 for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) { 1835 error = zfs_userspace(zhp, p, userspace_cb, &p); 1836 if (error) 1837 break; 1838 } 1839 return (error); 1840 } 1841 1842 /* 1843 * list [-r][-d max] [-H] [-o property[,property]...] [-t type[,type]...] 1844 * [-s property [-s property]...] [-S property [-S property]...] 1845 * <dataset> ... 1846 * 1847 * -r Recurse over all children 1848 * -d Limit recursion by depth. 1849 * -H Scripted mode; elide headers and separate columns by tabs 1850 * -o Control which fields to display. 1851 * -t Control which object types to display. 1852 * -s Specify sort columns, descending order. 1853 * -S Specify sort columns, ascending order. 1854 * 1855 * When given no arguments, lists all filesystems in the system. 1856 * Otherwise, list the specified datasets, optionally recursing down them if 1857 * '-r' is specified. 1858 */ 1859 typedef struct list_cbdata { 1860 boolean_t cb_first; 1861 boolean_t cb_scripted; 1862 zprop_list_t *cb_proplist; 1863 } list_cbdata_t; 1864 1865 /* 1866 * Given a list of columns to display, output appropriate headers for each one. 1867 */ 1868 static void 1869 print_header(zprop_list_t *pl) 1870 { 1871 char headerbuf[ZFS_MAXPROPLEN]; 1872 const char *header; 1873 int i; 1874 boolean_t first = B_TRUE; 1875 boolean_t right_justify; 1876 1877 for (; pl != NULL; pl = pl->pl_next) { 1878 if (!first) { 1879 (void) printf(" "); 1880 } else { 1881 first = B_FALSE; 1882 } 1883 1884 right_justify = B_FALSE; 1885 if (pl->pl_prop != ZPROP_INVAL) { 1886 header = zfs_prop_column_name(pl->pl_prop); 1887 right_justify = zfs_prop_align_right(pl->pl_prop); 1888 } else { 1889 for (i = 0; pl->pl_user_prop[i] != '\0'; i++) 1890 headerbuf[i] = toupper(pl->pl_user_prop[i]); 1891 headerbuf[i] = '\0'; 1892 header = headerbuf; 1893 } 1894 1895 if (pl->pl_next == NULL && !right_justify) 1896 (void) printf("%s", header); 1897 else if (right_justify) 1898 (void) printf("%*s", pl->pl_width, header); 1899 else 1900 (void) printf("%-*s", pl->pl_width, header); 1901 } 1902 1903 (void) printf("\n"); 1904 } 1905 1906 /* 1907 * Given a dataset and a list of fields, print out all the properties according 1908 * to the described layout. 1909 */ 1910 static void 1911 print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted) 1912 { 1913 boolean_t first = B_TRUE; 1914 char property[ZFS_MAXPROPLEN]; 1915 nvlist_t *userprops = zfs_get_user_props(zhp); 1916 nvlist_t *propval; 1917 char *propstr; 1918 boolean_t right_justify; 1919 int width; 1920 1921 for (; pl != NULL; pl = pl->pl_next) { 1922 if (!first) { 1923 if (scripted) 1924 (void) printf("\t"); 1925 else 1926 (void) printf(" "); 1927 } else { 1928 first = B_FALSE; 1929 } 1930 1931 if (pl->pl_prop != ZPROP_INVAL) { 1932 if (zfs_prop_get(zhp, pl->pl_prop, property, 1933 sizeof (property), NULL, NULL, 0, B_FALSE) != 0) 1934 propstr = "-"; 1935 else 1936 propstr = property; 1937 1938 right_justify = zfs_prop_align_right(pl->pl_prop); 1939 } else if (zfs_prop_userquota(pl->pl_user_prop)) { 1940 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop, 1941 property, sizeof (property), B_FALSE) != 0) 1942 propstr = "-"; 1943 else 1944 propstr = property; 1945 right_justify = B_TRUE; 1946 } else { 1947 if (nvlist_lookup_nvlist(userprops, 1948 pl->pl_user_prop, &propval) != 0) 1949 propstr = "-"; 1950 else 1951 verify(nvlist_lookup_string(propval, 1952 ZPROP_VALUE, &propstr) == 0); 1953 right_justify = B_FALSE; 1954 } 1955 1956 width = pl->pl_width; 1957 1958 /* 1959 * If this is being called in scripted mode, or if this is the 1960 * last column and it is left-justified, don't include a width 1961 * format specifier. 1962 */ 1963 if (scripted || (pl->pl_next == NULL && !right_justify)) 1964 (void) printf("%s", propstr); 1965 else if (right_justify) 1966 (void) printf("%*s", width, propstr); 1967 else 1968 (void) printf("%-*s", width, propstr); 1969 } 1970 1971 (void) printf("\n"); 1972 } 1973 1974 /* 1975 * Generic callback function to list a dataset or snapshot. 1976 */ 1977 static int 1978 list_callback(zfs_handle_t *zhp, void *data) 1979 { 1980 list_cbdata_t *cbp = data; 1981 1982 if (cbp->cb_first) { 1983 if (!cbp->cb_scripted) 1984 print_header(cbp->cb_proplist); 1985 cbp->cb_first = B_FALSE; 1986 } 1987 1988 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted); 1989 1990 return (0); 1991 } 1992 1993 static int 1994 zfs_do_list(int argc, char **argv) 1995 { 1996 int c; 1997 boolean_t scripted = B_FALSE; 1998 static char default_fields[] = 1999 "name,used,available,referenced,mountpoint"; 2000 int types = ZFS_TYPE_DATASET; 2001 boolean_t types_specified = B_FALSE; 2002 char *fields = NULL; 2003 list_cbdata_t cb = { 0 }; 2004 char *value; 2005 int limit = 0; 2006 int ret; 2007 zfs_sort_column_t *sortcol = NULL; 2008 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS; 2009 2010 /* check options */ 2011 while ((c = getopt(argc, argv, ":d:o:rt:Hs:S:")) != -1) { 2012 switch (c) { 2013 case 'o': 2014 fields = optarg; 2015 break; 2016 case 'd': 2017 limit = parse_depth(optarg, &flags); 2018 break; 2019 case 'r': 2020 flags |= ZFS_ITER_RECURSE; 2021 break; 2022 case 'H': 2023 scripted = B_TRUE; 2024 break; 2025 case 's': 2026 if (zfs_add_sort_column(&sortcol, optarg, 2027 B_FALSE) != 0) { 2028 (void) fprintf(stderr, 2029 gettext("invalid property '%s'\n"), optarg); 2030 usage(B_FALSE); 2031 } 2032 break; 2033 case 'S': 2034 if (zfs_add_sort_column(&sortcol, optarg, 2035 B_TRUE) != 0) { 2036 (void) fprintf(stderr, 2037 gettext("invalid property '%s'\n"), optarg); 2038 usage(B_FALSE); 2039 } 2040 break; 2041 case 't': 2042 types = 0; 2043 types_specified = B_TRUE; 2044 flags &= ~ZFS_ITER_PROP_LISTSNAPS; 2045 while (*optarg != '\0') { 2046 static char *type_subopts[] = { "filesystem", 2047 "volume", "snapshot", "all", NULL }; 2048 2049 switch (getsubopt(&optarg, type_subopts, 2050 &value)) { 2051 case 0: 2052 types |= ZFS_TYPE_FILESYSTEM; 2053 break; 2054 case 1: 2055 types |= ZFS_TYPE_VOLUME; 2056 break; 2057 case 2: 2058 types |= ZFS_TYPE_SNAPSHOT; 2059 break; 2060 case 3: 2061 types = ZFS_TYPE_DATASET; 2062 break; 2063 2064 default: 2065 (void) fprintf(stderr, 2066 gettext("invalid type '%s'\n"), 2067 value); 2068 usage(B_FALSE); 2069 } 2070 } 2071 break; 2072 case ':': 2073 (void) fprintf(stderr, gettext("missing argument for " 2074 "'%c' option\n"), optopt); 2075 usage(B_FALSE); 2076 break; 2077 case '?': 2078 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2079 optopt); 2080 usage(B_FALSE); 2081 } 2082 } 2083 2084 argc -= optind; 2085 argv += optind; 2086 2087 if (fields == NULL) 2088 fields = default_fields; 2089 2090 /* 2091 * If "-o space" and no types were specified, don't display snapshots. 2092 */ 2093 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE) 2094 types &= ~ZFS_TYPE_SNAPSHOT; 2095 2096 /* 2097 * If the user specifies '-o all', the zprop_get_list() doesn't 2098 * normally include the name of the dataset. For 'zfs list', we always 2099 * want this property to be first. 2100 */ 2101 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 2102 != 0) 2103 usage(B_FALSE); 2104 2105 cb.cb_scripted = scripted; 2106 cb.cb_first = B_TRUE; 2107 2108 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist, 2109 limit, list_callback, &cb); 2110 2111 zprop_free_list(cb.cb_proplist); 2112 zfs_free_sort_columns(sortcol); 2113 2114 if (ret == 0 && cb.cb_first && !cb.cb_scripted) 2115 (void) printf(gettext("no datasets available\n")); 2116 2117 return (ret); 2118 } 2119 2120 /* 2121 * zfs rename <fs | snap | vol> <fs | snap | vol> 2122 * zfs rename -p <fs | vol> <fs | vol> 2123 * zfs rename -r <snap> <snap> 2124 * 2125 * Renames the given dataset to another of the same type. 2126 * 2127 * The '-p' flag creates all the non-existing ancestors of the target first. 2128 */ 2129 /* ARGSUSED */ 2130 static int 2131 zfs_do_rename(int argc, char **argv) 2132 { 2133 zfs_handle_t *zhp; 2134 int c; 2135 int ret; 2136 boolean_t recurse = B_FALSE; 2137 boolean_t parents = B_FALSE; 2138 2139 /* check options */ 2140 while ((c = getopt(argc, argv, "pr")) != -1) { 2141 switch (c) { 2142 case 'p': 2143 parents = B_TRUE; 2144 break; 2145 case 'r': 2146 recurse = B_TRUE; 2147 break; 2148 case '?': 2149 default: 2150 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2151 optopt); 2152 usage(B_FALSE); 2153 } 2154 } 2155 2156 argc -= optind; 2157 argv += optind; 2158 2159 /* check number of arguments */ 2160 if (argc < 1) { 2161 (void) fprintf(stderr, gettext("missing source dataset " 2162 "argument\n")); 2163 usage(B_FALSE); 2164 } 2165 if (argc < 2) { 2166 (void) fprintf(stderr, gettext("missing target dataset " 2167 "argument\n")); 2168 usage(B_FALSE); 2169 } 2170 if (argc > 2) { 2171 (void) fprintf(stderr, gettext("too many arguments\n")); 2172 usage(B_FALSE); 2173 } 2174 2175 if (recurse && parents) { 2176 (void) fprintf(stderr, gettext("-p and -r options are mutually " 2177 "exclusive\n")); 2178 usage(B_FALSE); 2179 } 2180 2181 if (recurse && strchr(argv[0], '@') == 0) { 2182 (void) fprintf(stderr, gettext("source dataset for recursive " 2183 "rename must be a snapshot\n")); 2184 usage(B_FALSE); 2185 } 2186 2187 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM | 2188 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL) 2189 return (1); 2190 2191 /* If we were asked and the name looks good, try to create ancestors. */ 2192 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) && 2193 zfs_create_ancestors(g_zfs, argv[1]) != 0) { 2194 zfs_close(zhp); 2195 return (1); 2196 } 2197 2198 ret = (zfs_rename(zhp, argv[1], recurse) != 0); 2199 2200 zfs_close(zhp); 2201 return (ret); 2202 } 2203 2204 /* 2205 * zfs promote <fs> 2206 * 2207 * Promotes the given clone fs to be the parent 2208 */ 2209 /* ARGSUSED */ 2210 static int 2211 zfs_do_promote(int argc, char **argv) 2212 { 2213 zfs_handle_t *zhp; 2214 int ret; 2215 2216 /* check options */ 2217 if (argc > 1 && argv[1][0] == '-') { 2218 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2219 argv[1][1]); 2220 usage(B_FALSE); 2221 } 2222 2223 /* check number of arguments */ 2224 if (argc < 2) { 2225 (void) fprintf(stderr, gettext("missing clone filesystem" 2226 " argument\n")); 2227 usage(B_FALSE); 2228 } 2229 if (argc > 2) { 2230 (void) fprintf(stderr, gettext("too many arguments\n")); 2231 usage(B_FALSE); 2232 } 2233 2234 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2235 if (zhp == NULL) 2236 return (1); 2237 2238 ret = (zfs_promote(zhp) != 0); 2239 2240 2241 zfs_close(zhp); 2242 return (ret); 2243 } 2244 2245 /* 2246 * zfs rollback [-rRf] <snapshot> 2247 * 2248 * -r Delete any intervening snapshots before doing rollback 2249 * -R Delete any snapshots and their clones 2250 * -f ignored for backwards compatability 2251 * 2252 * Given a filesystem, rollback to a specific snapshot, discarding any changes 2253 * since then and making it the active dataset. If more recent snapshots exist, 2254 * the command will complain unless the '-r' flag is given. 2255 */ 2256 typedef struct rollback_cbdata { 2257 uint64_t cb_create; 2258 boolean_t cb_first; 2259 int cb_doclones; 2260 char *cb_target; 2261 int cb_error; 2262 boolean_t cb_recurse; 2263 boolean_t cb_dependent; 2264 } rollback_cbdata_t; 2265 2266 /* 2267 * Report any snapshots more recent than the one specified. Used when '-r' is 2268 * not specified. We reuse this same callback for the snapshot dependents - if 2269 * 'cb_dependent' is set, then this is a dependent and we should report it 2270 * without checking the transaction group. 2271 */ 2272 static int 2273 rollback_check(zfs_handle_t *zhp, void *data) 2274 { 2275 rollback_cbdata_t *cbp = data; 2276 2277 if (cbp->cb_doclones) { 2278 zfs_close(zhp); 2279 return (0); 2280 } 2281 2282 if (!cbp->cb_dependent) { 2283 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 && 2284 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && 2285 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > 2286 cbp->cb_create) { 2287 2288 if (cbp->cb_first && !cbp->cb_recurse) { 2289 (void) fprintf(stderr, gettext("cannot " 2290 "rollback to '%s': more recent snapshots " 2291 "exist\n"), 2292 cbp->cb_target); 2293 (void) fprintf(stderr, gettext("use '-r' to " 2294 "force deletion of the following " 2295 "snapshots:\n")); 2296 cbp->cb_first = 0; 2297 cbp->cb_error = 1; 2298 } 2299 2300 if (cbp->cb_recurse) { 2301 cbp->cb_dependent = B_TRUE; 2302 if (zfs_iter_dependents(zhp, B_TRUE, 2303 rollback_check, cbp) != 0) { 2304 zfs_close(zhp); 2305 return (-1); 2306 } 2307 cbp->cb_dependent = B_FALSE; 2308 } else { 2309 (void) fprintf(stderr, "%s\n", 2310 zfs_get_name(zhp)); 2311 } 2312 } 2313 } else { 2314 if (cbp->cb_first && cbp->cb_recurse) { 2315 (void) fprintf(stderr, gettext("cannot rollback to " 2316 "'%s': clones of previous snapshots exist\n"), 2317 cbp->cb_target); 2318 (void) fprintf(stderr, gettext("use '-R' to " 2319 "force deletion of the following clones and " 2320 "dependents:\n")); 2321 cbp->cb_first = 0; 2322 cbp->cb_error = 1; 2323 } 2324 2325 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 2326 } 2327 2328 zfs_close(zhp); 2329 return (0); 2330 } 2331 2332 static int 2333 zfs_do_rollback(int argc, char **argv) 2334 { 2335 int ret; 2336 int c; 2337 boolean_t force = B_FALSE; 2338 rollback_cbdata_t cb = { 0 }; 2339 zfs_handle_t *zhp, *snap; 2340 char parentname[ZFS_MAXNAMELEN]; 2341 char *delim; 2342 2343 /* check options */ 2344 while ((c = getopt(argc, argv, "rRf")) != -1) { 2345 switch (c) { 2346 case 'r': 2347 cb.cb_recurse = 1; 2348 break; 2349 case 'R': 2350 cb.cb_recurse = 1; 2351 cb.cb_doclones = 1; 2352 break; 2353 case 'f': 2354 force = B_TRUE; 2355 break; 2356 case '?': 2357 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2358 optopt); 2359 usage(B_FALSE); 2360 } 2361 } 2362 2363 argc -= optind; 2364 argv += optind; 2365 2366 /* check number of arguments */ 2367 if (argc < 1) { 2368 (void) fprintf(stderr, gettext("missing dataset argument\n")); 2369 usage(B_FALSE); 2370 } 2371 if (argc > 1) { 2372 (void) fprintf(stderr, gettext("too many arguments\n")); 2373 usage(B_FALSE); 2374 } 2375 2376 /* open the snapshot */ 2377 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 2378 return (1); 2379 2380 /* open the parent dataset */ 2381 (void) strlcpy(parentname, argv[0], sizeof (parentname)); 2382 verify((delim = strrchr(parentname, '@')) != NULL); 2383 *delim = '\0'; 2384 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) { 2385 zfs_close(snap); 2386 return (1); 2387 } 2388 2389 /* 2390 * Check for more recent snapshots and/or clones based on the presence 2391 * of '-r' and '-R'. 2392 */ 2393 cb.cb_target = argv[0]; 2394 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 2395 cb.cb_first = B_TRUE; 2396 cb.cb_error = 0; 2397 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0) 2398 goto out; 2399 2400 if ((ret = cb.cb_error) != 0) 2401 goto out; 2402 2403 /* 2404 * Rollback parent to the given snapshot. 2405 */ 2406 ret = zfs_rollback(zhp, snap, force); 2407 2408 out: 2409 zfs_close(snap); 2410 zfs_close(zhp); 2411 2412 if (ret == 0) 2413 return (0); 2414 else 2415 return (1); 2416 } 2417 2418 /* 2419 * zfs set property=value { fs | snap | vol } ... 2420 * 2421 * Sets the given property for all datasets specified on the command line. 2422 */ 2423 typedef struct set_cbdata { 2424 char *cb_propname; 2425 char *cb_value; 2426 } set_cbdata_t; 2427 2428 static int 2429 set_callback(zfs_handle_t *zhp, void *data) 2430 { 2431 set_cbdata_t *cbp = data; 2432 2433 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) { 2434 switch (libzfs_errno(g_zfs)) { 2435 case EZFS_MOUNTFAILED: 2436 (void) fprintf(stderr, gettext("property may be set " 2437 "but unable to remount filesystem\n")); 2438 break; 2439 case EZFS_SHARENFSFAILED: 2440 (void) fprintf(stderr, gettext("property may be set " 2441 "but unable to reshare filesystem\n")); 2442 break; 2443 } 2444 return (1); 2445 } 2446 return (0); 2447 } 2448 2449 static int 2450 zfs_do_set(int argc, char **argv) 2451 { 2452 set_cbdata_t cb; 2453 int ret; 2454 2455 /* check for options */ 2456 if (argc > 1 && argv[1][0] == '-') { 2457 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2458 argv[1][1]); 2459 usage(B_FALSE); 2460 } 2461 2462 /* check number of arguments */ 2463 if (argc < 2) { 2464 (void) fprintf(stderr, gettext("missing property=value " 2465 "argument\n")); 2466 usage(B_FALSE); 2467 } 2468 if (argc < 3) { 2469 (void) fprintf(stderr, gettext("missing dataset name\n")); 2470 usage(B_FALSE); 2471 } 2472 2473 /* validate property=value argument */ 2474 cb.cb_propname = argv[1]; 2475 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) || 2476 (cb.cb_value[1] == '\0')) { 2477 (void) fprintf(stderr, gettext("missing value in " 2478 "property=value argument\n")); 2479 usage(B_FALSE); 2480 } 2481 2482 *cb.cb_value = '\0'; 2483 cb.cb_value++; 2484 2485 if (*cb.cb_propname == '\0') { 2486 (void) fprintf(stderr, 2487 gettext("missing property in property=value argument\n")); 2488 usage(B_FALSE); 2489 } 2490 2491 ret = zfs_for_each(argc - 2, argv + 2, NULL, 2492 ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, &cb); 2493 2494 return (ret); 2495 } 2496 2497 /* 2498 * zfs snapshot [-r] [-o prop=value] ... <fs@snap> 2499 * 2500 * Creates a snapshot with the given name. While functionally equivalent to 2501 * 'zfs create', it is a separate command to differentiate intent. 2502 */ 2503 static int 2504 zfs_do_snapshot(int argc, char **argv) 2505 { 2506 boolean_t recursive = B_FALSE; 2507 int ret; 2508 char c; 2509 nvlist_t *props; 2510 2511 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 2512 (void) fprintf(stderr, gettext("internal error: " 2513 "out of memory\n")); 2514 return (1); 2515 } 2516 2517 /* check options */ 2518 while ((c = getopt(argc, argv, "ro:")) != -1) { 2519 switch (c) { 2520 case 'o': 2521 if (parseprop(props)) 2522 return (1); 2523 break; 2524 case 'r': 2525 recursive = B_TRUE; 2526 break; 2527 case '?': 2528 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2529 optopt); 2530 goto usage; 2531 } 2532 } 2533 2534 argc -= optind; 2535 argv += optind; 2536 2537 /* check number of arguments */ 2538 if (argc < 1) { 2539 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2540 goto usage; 2541 } 2542 if (argc > 1) { 2543 (void) fprintf(stderr, gettext("too many arguments\n")); 2544 goto usage; 2545 } 2546 2547 ret = zfs_snapshot(g_zfs, argv[0], recursive, props); 2548 nvlist_free(props); 2549 if (ret && recursive) 2550 (void) fprintf(stderr, gettext("no snapshots were created\n")); 2551 return (ret != 0); 2552 2553 usage: 2554 nvlist_free(props); 2555 usage(B_FALSE); 2556 return (-1); 2557 } 2558 2559 /* 2560 * zfs send [-vDp] -R [-i|-I <@snap>] <fs@snap> 2561 * zfs send [-vDp] [-i|-I <@snap>] <fs@snap> 2562 * 2563 * Send a backup stream to stdout. 2564 */ 2565 static int 2566 zfs_do_send(int argc, char **argv) 2567 { 2568 char *fromname = NULL; 2569 char *toname = NULL; 2570 char *cp; 2571 zfs_handle_t *zhp; 2572 sendflags_t flags = { 0 }; 2573 int c, err; 2574 2575 /* check options */ 2576 while ((c = getopt(argc, argv, ":i:I:RDpv")) != -1) { 2577 switch (c) { 2578 case 'i': 2579 if (fromname) 2580 usage(B_FALSE); 2581 fromname = optarg; 2582 break; 2583 case 'I': 2584 if (fromname) 2585 usage(B_FALSE); 2586 fromname = optarg; 2587 flags.doall = B_TRUE; 2588 break; 2589 case 'R': 2590 flags.replicate = B_TRUE; 2591 break; 2592 case 'p': 2593 flags.props = B_TRUE; 2594 break; 2595 case 'v': 2596 flags.verbose = B_TRUE; 2597 break; 2598 case 'D': 2599 flags.dedup = B_TRUE; 2600 break; 2601 case ':': 2602 (void) fprintf(stderr, gettext("missing argument for " 2603 "'%c' option\n"), optopt); 2604 usage(B_FALSE); 2605 break; 2606 case '?': 2607 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2608 optopt); 2609 usage(B_FALSE); 2610 } 2611 } 2612 2613 argc -= optind; 2614 argv += optind; 2615 2616 /* check number of arguments */ 2617 if (argc < 1) { 2618 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2619 usage(B_FALSE); 2620 } 2621 if (argc > 1) { 2622 (void) fprintf(stderr, gettext("too many arguments\n")); 2623 usage(B_FALSE); 2624 } 2625 2626 if (isatty(STDOUT_FILENO)) { 2627 (void) fprintf(stderr, 2628 gettext("Error: Stream can not be written to a terminal.\n" 2629 "You must redirect standard output.\n")); 2630 return (1); 2631 } 2632 2633 cp = strchr(argv[0], '@'); 2634 if (cp == NULL) { 2635 (void) fprintf(stderr, 2636 gettext("argument must be a snapshot\n")); 2637 usage(B_FALSE); 2638 } 2639 *cp = '\0'; 2640 toname = cp + 1; 2641 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2642 if (zhp == NULL) 2643 return (1); 2644 2645 /* 2646 * If they specified the full path to the snapshot, chop off 2647 * everything except the short name of the snapshot, but special 2648 * case if they specify the origin. 2649 */ 2650 if (fromname && (cp = strchr(fromname, '@')) != NULL) { 2651 char origin[ZFS_MAXNAMELEN]; 2652 zprop_source_t src; 2653 2654 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN, 2655 origin, sizeof (origin), &src, NULL, 0, B_FALSE); 2656 2657 if (strcmp(origin, fromname) == 0) { 2658 fromname = NULL; 2659 flags.fromorigin = B_TRUE; 2660 } else { 2661 *cp = '\0'; 2662 if (cp != fromname && strcmp(argv[0], fromname)) { 2663 (void) fprintf(stderr, 2664 gettext("incremental source must be " 2665 "in same filesystem\n")); 2666 usage(B_FALSE); 2667 } 2668 fromname = cp + 1; 2669 if (strchr(fromname, '@') || strchr(fromname, '/')) { 2670 (void) fprintf(stderr, 2671 gettext("invalid incremental source\n")); 2672 usage(B_FALSE); 2673 } 2674 } 2675 } 2676 2677 if (flags.replicate && fromname == NULL) 2678 flags.doall = B_TRUE; 2679 2680 err = zfs_send(zhp, fromname, toname, flags, STDOUT_FILENO, NULL, 0); 2681 zfs_close(zhp); 2682 2683 return (err != 0); 2684 } 2685 2686 /* 2687 * zfs receive [-dnvF] <fs@snap> 2688 * 2689 * Restore a backup stream from stdin. 2690 */ 2691 static int 2692 zfs_do_receive(int argc, char **argv) 2693 { 2694 int c, err; 2695 recvflags_t flags = { 0 }; 2696 2697 /* check options */ 2698 while ((c = getopt(argc, argv, ":dnuvF")) != -1) { 2699 switch (c) { 2700 case 'd': 2701 flags.isprefix = B_TRUE; 2702 break; 2703 case 'n': 2704 flags.dryrun = B_TRUE; 2705 break; 2706 case 'u': 2707 flags.nomount = B_TRUE; 2708 break; 2709 case 'v': 2710 flags.verbose = B_TRUE; 2711 break; 2712 case 'F': 2713 flags.force = B_TRUE; 2714 break; 2715 case ':': 2716 (void) fprintf(stderr, gettext("missing argument for " 2717 "'%c' option\n"), optopt); 2718 usage(B_FALSE); 2719 break; 2720 case '?': 2721 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2722 optopt); 2723 usage(B_FALSE); 2724 } 2725 } 2726 2727 argc -= optind; 2728 argv += optind; 2729 2730 /* check number of arguments */ 2731 if (argc < 1) { 2732 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2733 usage(B_FALSE); 2734 } 2735 if (argc > 1) { 2736 (void) fprintf(stderr, gettext("too many arguments\n")); 2737 usage(B_FALSE); 2738 } 2739 2740 if (isatty(STDIN_FILENO)) { 2741 (void) fprintf(stderr, 2742 gettext("Error: Backup stream can not be read " 2743 "from a terminal.\n" 2744 "You must redirect standard input.\n")); 2745 return (1); 2746 } 2747 2748 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL); 2749 2750 return (err != 0); 2751 } 2752 2753 static int 2754 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding) 2755 { 2756 int errors = 0; 2757 int i; 2758 const char *tag; 2759 boolean_t recursive = B_FALSE; 2760 boolean_t temphold = B_FALSE; 2761 const char *opts = holding ? "rt" : "r"; 2762 int c; 2763 2764 /* check options */ 2765 while ((c = getopt(argc, argv, opts)) != -1) { 2766 switch (c) { 2767 case 'r': 2768 recursive = B_TRUE; 2769 break; 2770 case 't': 2771 temphold = B_TRUE; 2772 break; 2773 case '?': 2774 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2775 optopt); 2776 usage(B_FALSE); 2777 } 2778 } 2779 2780 argc -= optind; 2781 argv += optind; 2782 2783 /* check number of arguments */ 2784 if (argc < 2) 2785 usage(B_FALSE); 2786 2787 tag = argv[0]; 2788 --argc; 2789 ++argv; 2790 2791 if (holding && tag[0] == '.') { 2792 /* tags starting with '.' are reserved for libzfs */ 2793 (void) fprintf(stderr, gettext("tag may not start with '.'\n")); 2794 usage(B_FALSE); 2795 } 2796 2797 for (i = 0; i < argc; ++i) { 2798 zfs_handle_t *zhp; 2799 char parent[ZFS_MAXNAMELEN]; 2800 const char *delim; 2801 char *path = argv[i]; 2802 2803 delim = strchr(path, '@'); 2804 if (delim == NULL) { 2805 (void) fprintf(stderr, 2806 gettext("'%s' is not a snapshot\n"), path); 2807 ++errors; 2808 continue; 2809 } 2810 (void) strncpy(parent, path, delim - path); 2811 parent[delim - path] = '\0'; 2812 2813 zhp = zfs_open(g_zfs, parent, 2814 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2815 if (zhp == NULL) { 2816 ++errors; 2817 continue; 2818 } 2819 if (holding) { 2820 if (zfs_hold(zhp, delim+1, tag, recursive, 2821 temphold, B_FALSE) != 0) 2822 ++errors; 2823 } else { 2824 if (zfs_release(zhp, delim+1, tag, recursive) != 0) 2825 ++errors; 2826 } 2827 zfs_close(zhp); 2828 } 2829 2830 return (errors != 0); 2831 } 2832 2833 /* 2834 * zfs hold [-r] [-t] <tag> <snap> ... 2835 * 2836 * -r Recursively hold 2837 * -t Temporary hold (hidden option) 2838 * 2839 * Apply a user-hold with the given tag to the list of snapshots. 2840 */ 2841 static int 2842 zfs_do_hold(int argc, char **argv) 2843 { 2844 return (zfs_do_hold_rele_impl(argc, argv, B_TRUE)); 2845 } 2846 2847 /* 2848 * zfs release [-r] <tag> <snap> ... 2849 * 2850 * -r Recursively release 2851 * 2852 * Release a user-hold with the given tag from the list of snapshots. 2853 */ 2854 static int 2855 zfs_do_release(int argc, char **argv) 2856 { 2857 return (zfs_do_hold_rele_impl(argc, argv, B_FALSE)); 2858 } 2859 2860 typedef struct get_all_cbdata { 2861 zfs_handle_t **cb_handles; 2862 size_t cb_alloc; 2863 size_t cb_used; 2864 uint_t cb_types; 2865 boolean_t cb_verbose; 2866 } get_all_cbdata_t; 2867 2868 #define CHECK_SPINNER 30 2869 #define SPINNER_TIME 3 /* seconds */ 2870 #define MOUNT_TIME 5 /* seconds */ 2871 2872 static int 2873 get_one_dataset(zfs_handle_t *zhp, void *data) 2874 { 2875 static char spin[] = { '-', '\\', '|', '/' }; 2876 static int spinval = 0; 2877 static int spincheck = 0; 2878 static time_t last_spin_time = (time_t)0; 2879 get_all_cbdata_t *cbp = data; 2880 zfs_type_t type = zfs_get_type(zhp); 2881 2882 if (cbp->cb_verbose) { 2883 if (--spincheck < 0) { 2884 time_t now = time(NULL); 2885 if (last_spin_time + SPINNER_TIME < now) { 2886 (void) printf("\b%c", spin[spinval++ % 4]); 2887 (void) fflush(stdout); 2888 last_spin_time = now; 2889 } 2890 spincheck = CHECK_SPINNER; 2891 } 2892 } 2893 2894 /* 2895 * Interate over any nested datasets. 2896 */ 2897 if (type == ZFS_TYPE_FILESYSTEM && 2898 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) { 2899 zfs_close(zhp); 2900 return (1); 2901 } 2902 2903 /* 2904 * Skip any datasets whose type does not match. 2905 */ 2906 if ((type & cbp->cb_types) == 0) { 2907 zfs_close(zhp); 2908 return (0); 2909 } 2910 2911 if (cbp->cb_alloc == cbp->cb_used) { 2912 zfs_handle_t **handles; 2913 2914 if (cbp->cb_alloc == 0) 2915 cbp->cb_alloc = 64; 2916 else 2917 cbp->cb_alloc *= 2; 2918 2919 handles = safe_malloc(cbp->cb_alloc * sizeof (void *)); 2920 2921 if (cbp->cb_handles) { 2922 bcopy(cbp->cb_handles, handles, 2923 cbp->cb_used * sizeof (void *)); 2924 free(cbp->cb_handles); 2925 } 2926 2927 cbp->cb_handles = handles; 2928 } 2929 2930 cbp->cb_handles[cbp->cb_used++] = zhp; 2931 2932 return (0); 2933 } 2934 2935 static void 2936 get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count, 2937 boolean_t verbose) 2938 { 2939 get_all_cbdata_t cb = { 0 }; 2940 cb.cb_types = types; 2941 cb.cb_verbose = verbose; 2942 2943 if (verbose) { 2944 (void) printf("%s: *", gettext("Reading ZFS config")); 2945 (void) fflush(stdout); 2946 } 2947 2948 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb); 2949 2950 *dslist = cb.cb_handles; 2951 *count = cb.cb_used; 2952 2953 if (verbose) { 2954 (void) printf("\b%s\n", gettext("done.")); 2955 } 2956 } 2957 2958 static int 2959 dataset_cmp(const void *a, const void *b) 2960 { 2961 zfs_handle_t **za = (zfs_handle_t **)a; 2962 zfs_handle_t **zb = (zfs_handle_t **)b; 2963 char mounta[MAXPATHLEN]; 2964 char mountb[MAXPATHLEN]; 2965 boolean_t gota, gotb; 2966 2967 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0) 2968 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta, 2969 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0); 2970 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0) 2971 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb, 2972 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0); 2973 2974 if (gota && gotb) 2975 return (strcmp(mounta, mountb)); 2976 2977 if (gota) 2978 return (-1); 2979 if (gotb) 2980 return (1); 2981 2982 return (strcmp(zfs_get_name(a), zfs_get_name(b))); 2983 } 2984 2985 /* 2986 * Generic callback for sharing or mounting filesystems. Because the code is so 2987 * similar, we have a common function with an extra parameter to determine which 2988 * mode we are using. 2989 */ 2990 #define OP_SHARE 0x1 2991 #define OP_MOUNT 0x2 2992 2993 /* 2994 * Share or mount a dataset. 2995 */ 2996 static int 2997 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol, 2998 boolean_t explicit, const char *options) 2999 { 3000 char mountpoint[ZFS_MAXPROPLEN]; 3001 char shareopts[ZFS_MAXPROPLEN]; 3002 char smbshareopts[ZFS_MAXPROPLEN]; 3003 const char *cmdname = op == OP_SHARE ? "share" : "mount"; 3004 struct mnttab mnt; 3005 uint64_t zoned, canmount; 3006 zfs_type_t type = zfs_get_type(zhp); 3007 boolean_t shared_nfs, shared_smb; 3008 3009 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)); 3010 3011 if (type == ZFS_TYPE_FILESYSTEM) { 3012 /* 3013 * Check to make sure we can mount/share this dataset. If we 3014 * are in the global zone and the filesystem is exported to a 3015 * local zone, or if we are in a local zone and the 3016 * filesystem is not exported, then it is an error. 3017 */ 3018 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 3019 3020 if (zoned && getzoneid() == GLOBAL_ZONEID) { 3021 if (!explicit) 3022 return (0); 3023 3024 (void) fprintf(stderr, gettext("cannot %s '%s': " 3025 "dataset is exported to a local zone\n"), cmdname, 3026 zfs_get_name(zhp)); 3027 return (1); 3028 3029 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) { 3030 if (!explicit) 3031 return (0); 3032 3033 (void) fprintf(stderr, gettext("cannot %s '%s': " 3034 "permission denied\n"), cmdname, 3035 zfs_get_name(zhp)); 3036 return (1); 3037 } 3038 3039 /* 3040 * Ignore any filesystems which don't apply to us. This 3041 * includes those with a legacy mountpoint, or those with 3042 * legacy share options. 3043 */ 3044 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 3045 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0); 3046 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts, 3047 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3048 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts, 3049 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0); 3050 3051 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 && 3052 strcmp(smbshareopts, "off") == 0) { 3053 if (!explicit) 3054 return (0); 3055 3056 (void) fprintf(stderr, gettext("cannot share '%s': " 3057 "legacy share\n"), zfs_get_name(zhp)); 3058 (void) fprintf(stderr, gettext("use share(1M) to " 3059 "share this filesystem, or set " 3060 "sharenfs property on\n")); 3061 return (1); 3062 } 3063 3064 /* 3065 * We cannot share or mount legacy filesystems. If the 3066 * shareopts is non-legacy but the mountpoint is legacy, we 3067 * treat it as a legacy share. 3068 */ 3069 if (strcmp(mountpoint, "legacy") == 0) { 3070 if (!explicit) 3071 return (0); 3072 3073 (void) fprintf(stderr, gettext("cannot %s '%s': " 3074 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp)); 3075 (void) fprintf(stderr, gettext("use %s(1M) to " 3076 "%s this filesystem\n"), cmdname, cmdname); 3077 return (1); 3078 } 3079 3080 if (strcmp(mountpoint, "none") == 0) { 3081 if (!explicit) 3082 return (0); 3083 3084 (void) fprintf(stderr, gettext("cannot %s '%s': no " 3085 "mountpoint set\n"), cmdname, zfs_get_name(zhp)); 3086 return (1); 3087 } 3088 3089 /* 3090 * canmount explicit outcome 3091 * on no pass through 3092 * on yes pass through 3093 * off no return 0 3094 * off yes display error, return 1 3095 * noauto no return 0 3096 * noauto yes pass through 3097 */ 3098 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 3099 if (canmount == ZFS_CANMOUNT_OFF) { 3100 if (!explicit) 3101 return (0); 3102 3103 (void) fprintf(stderr, gettext("cannot %s '%s': " 3104 "'canmount' property is set to 'off'\n"), cmdname, 3105 zfs_get_name(zhp)); 3106 return (1); 3107 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) { 3108 return (0); 3109 } 3110 3111 /* 3112 * At this point, we have verified that the mountpoint and/or 3113 * shareopts are appropriate for auto management. If the 3114 * filesystem is already mounted or shared, return (failing 3115 * for explicit requests); otherwise mount or share the 3116 * filesystem. 3117 */ 3118 switch (op) { 3119 case OP_SHARE: 3120 3121 shared_nfs = zfs_is_shared_nfs(zhp, NULL); 3122 shared_smb = zfs_is_shared_smb(zhp, NULL); 3123 3124 if (shared_nfs && shared_smb || 3125 (shared_nfs && strcmp(shareopts, "on") == 0 && 3126 strcmp(smbshareopts, "off") == 0) || 3127 (shared_smb && strcmp(smbshareopts, "on") == 0 && 3128 strcmp(shareopts, "off") == 0)) { 3129 if (!explicit) 3130 return (0); 3131 3132 (void) fprintf(stderr, gettext("cannot share " 3133 "'%s': filesystem already shared\n"), 3134 zfs_get_name(zhp)); 3135 return (1); 3136 } 3137 3138 if (!zfs_is_mounted(zhp, NULL) && 3139 zfs_mount(zhp, NULL, 0) != 0) 3140 return (1); 3141 3142 if (protocol == NULL) { 3143 if (zfs_shareall(zhp) != 0) 3144 return (1); 3145 } else if (strcmp(protocol, "nfs") == 0) { 3146 if (zfs_share_nfs(zhp)) 3147 return (1); 3148 } else if (strcmp(protocol, "smb") == 0) { 3149 if (zfs_share_smb(zhp)) 3150 return (1); 3151 } else { 3152 (void) fprintf(stderr, gettext("cannot share " 3153 "'%s': invalid share type '%s' " 3154 "specified\n"), 3155 zfs_get_name(zhp), protocol); 3156 return (1); 3157 } 3158 3159 break; 3160 3161 case OP_MOUNT: 3162 if (options == NULL) 3163 mnt.mnt_mntopts = ""; 3164 else 3165 mnt.mnt_mntopts = (char *)options; 3166 3167 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) && 3168 zfs_is_mounted(zhp, NULL)) { 3169 if (!explicit) 3170 return (0); 3171 3172 (void) fprintf(stderr, gettext("cannot mount " 3173 "'%s': filesystem already mounted\n"), 3174 zfs_get_name(zhp)); 3175 return (1); 3176 } 3177 3178 if (zfs_mount(zhp, options, flags) != 0) 3179 return (1); 3180 break; 3181 } 3182 } else { 3183 assert(op == OP_SHARE); 3184 3185 /* 3186 * Ignore any volumes that aren't shared. 3187 */ 3188 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts, 3189 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3190 3191 if (strcmp(shareopts, "off") == 0) { 3192 if (!explicit) 3193 return (0); 3194 3195 (void) fprintf(stderr, gettext("cannot share '%s': " 3196 "'shareiscsi' property not set\n"), 3197 zfs_get_name(zhp)); 3198 (void) fprintf(stderr, gettext("set 'shareiscsi' " 3199 "property or use iscsitadm(1M) to share this " 3200 "volume\n")); 3201 return (1); 3202 } 3203 3204 if (zfs_is_shared_iscsi(zhp)) { 3205 if (!explicit) 3206 return (0); 3207 3208 (void) fprintf(stderr, gettext("cannot share " 3209 "'%s': volume already shared\n"), 3210 zfs_get_name(zhp)); 3211 return (1); 3212 } 3213 3214 if (zfs_share_iscsi(zhp) != 0) 3215 return (1); 3216 } 3217 3218 return (0); 3219 } 3220 3221 /* 3222 * Reports progress in the form "(current/total)". Not thread-safe. 3223 */ 3224 static void 3225 report_mount_progress(int current, int total) 3226 { 3227 static int len; 3228 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b" 3229 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"; 3230 static time_t last_progress_time; 3231 time_t now = time(NULL); 3232 3233 /* report 1..n instead of 0..n-1 */ 3234 ++current; 3235 3236 /* display header if we're here for the first time */ 3237 if (current == 1) { 3238 (void) printf(gettext("Mounting ZFS filesystems: ")); 3239 len = 0; 3240 } else if (current != total && last_progress_time + MOUNT_TIME >= now) { 3241 /* too soon to report again */ 3242 return; 3243 } 3244 3245 last_progress_time = now; 3246 3247 /* back up to prepare for overwriting */ 3248 if (len) 3249 (void) printf("%*.*s", len, len, reverse); 3250 3251 /* We put a newline at the end if this is the last one. */ 3252 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : ""); 3253 (void) fflush(stdout); 3254 } 3255 3256 static void 3257 append_options(char *mntopts, char *newopts) 3258 { 3259 int len = strlen(mntopts); 3260 3261 /* original length plus new string to append plus 1 for the comma */ 3262 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) { 3263 (void) fprintf(stderr, gettext("the opts argument for " 3264 "'%c' option is too long (more than %d chars)\n"), 3265 "-o", MNT_LINE_MAX); 3266 usage(B_FALSE); 3267 } 3268 3269 if (*mntopts) 3270 mntopts[len++] = ','; 3271 3272 (void) strcpy(&mntopts[len], newopts); 3273 } 3274 3275 static int 3276 share_mount(int op, int argc, char **argv) 3277 { 3278 int do_all = 0; 3279 boolean_t verbose = B_FALSE; 3280 int c, ret = 0; 3281 char *options = NULL; 3282 int types, flags = 0; 3283 3284 /* check options */ 3285 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a")) 3286 != -1) { 3287 switch (c) { 3288 case 'a': 3289 do_all = 1; 3290 break; 3291 case 'v': 3292 verbose = B_TRUE; 3293 break; 3294 case 'o': 3295 if (*optarg == '\0') { 3296 (void) fprintf(stderr, gettext("empty mount " 3297 "options (-o) specified\n")); 3298 usage(B_FALSE); 3299 } 3300 3301 if (options == NULL) 3302 options = safe_malloc(MNT_LINE_MAX + 1); 3303 3304 /* option validation is done later */ 3305 append_options(options, optarg); 3306 break; 3307 3308 case 'O': 3309 flags |= MS_OVERLAY; 3310 break; 3311 case ':': 3312 (void) fprintf(stderr, gettext("missing argument for " 3313 "'%c' option\n"), optopt); 3314 usage(B_FALSE); 3315 break; 3316 case '?': 3317 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3318 optopt); 3319 usage(B_FALSE); 3320 } 3321 } 3322 3323 argc -= optind; 3324 argv += optind; 3325 3326 /* check number of arguments */ 3327 if (do_all) { 3328 zfs_handle_t **dslist = NULL; 3329 size_t i, count = 0; 3330 char *protocol = NULL; 3331 3332 if (op == OP_MOUNT) { 3333 types = ZFS_TYPE_FILESYSTEM; 3334 } else if (argc > 0) { 3335 if (strcmp(argv[0], "nfs") == 0 || 3336 strcmp(argv[0], "smb") == 0) { 3337 types = ZFS_TYPE_FILESYSTEM; 3338 } else if (strcmp(argv[0], "iscsi") == 0) { 3339 types = ZFS_TYPE_VOLUME; 3340 } else { 3341 (void) fprintf(stderr, gettext("share type " 3342 "must be 'nfs', 'smb' or 'iscsi'\n")); 3343 usage(B_FALSE); 3344 } 3345 protocol = argv[0]; 3346 argc--; 3347 argv++; 3348 } else { 3349 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME; 3350 } 3351 3352 if (argc != 0) { 3353 (void) fprintf(stderr, gettext("too many arguments\n")); 3354 usage(B_FALSE); 3355 } 3356 3357 get_all_datasets(types, &dslist, &count, verbose); 3358 3359 if (count == 0) 3360 return (0); 3361 3362 qsort(dslist, count, sizeof (void *), dataset_cmp); 3363 3364 for (i = 0; i < count; i++) { 3365 if (verbose) 3366 report_mount_progress(i, count); 3367 3368 if (share_mount_one(dslist[i], op, flags, protocol, 3369 B_FALSE, options) != 0) 3370 ret = 1; 3371 zfs_close(dslist[i]); 3372 } 3373 3374 free(dslist); 3375 } else if (argc == 0) { 3376 struct mnttab entry; 3377 3378 if ((op == OP_SHARE) || (options != NULL)) { 3379 (void) fprintf(stderr, gettext("missing filesystem " 3380 "argument (specify -a for all)\n")); 3381 usage(B_FALSE); 3382 } 3383 3384 /* 3385 * When mount is given no arguments, go through /etc/mnttab and 3386 * display any active ZFS mounts. We hide any snapshots, since 3387 * they are controlled automatically. 3388 */ 3389 rewind(mnttab_file); 3390 while (getmntent(mnttab_file, &entry) == 0) { 3391 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 || 3392 strchr(entry.mnt_special, '@') != NULL) 3393 continue; 3394 3395 (void) printf("%-30s %s\n", entry.mnt_special, 3396 entry.mnt_mountp); 3397 } 3398 3399 } else { 3400 zfs_handle_t *zhp; 3401 3402 types = ZFS_TYPE_FILESYSTEM; 3403 if (op == OP_SHARE) 3404 types |= ZFS_TYPE_VOLUME; 3405 3406 if (argc > 1) { 3407 (void) fprintf(stderr, 3408 gettext("too many arguments\n")); 3409 usage(B_FALSE); 3410 } 3411 3412 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) { 3413 ret = 1; 3414 } else { 3415 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE, 3416 options); 3417 zfs_close(zhp); 3418 } 3419 } 3420 3421 return (ret); 3422 } 3423 3424 /* 3425 * zfs mount -a [nfs | iscsi] 3426 * zfs mount filesystem 3427 * 3428 * Mount all filesystems, or mount the given filesystem. 3429 */ 3430 static int 3431 zfs_do_mount(int argc, char **argv) 3432 { 3433 return (share_mount(OP_MOUNT, argc, argv)); 3434 } 3435 3436 /* 3437 * zfs share -a [nfs | iscsi | smb] 3438 * zfs share filesystem 3439 * 3440 * Share all filesystems, or share the given filesystem. 3441 */ 3442 static int 3443 zfs_do_share(int argc, char **argv) 3444 { 3445 return (share_mount(OP_SHARE, argc, argv)); 3446 } 3447 3448 typedef struct unshare_unmount_node { 3449 zfs_handle_t *un_zhp; 3450 char *un_mountp; 3451 uu_avl_node_t un_avlnode; 3452 } unshare_unmount_node_t; 3453 3454 /* ARGSUSED */ 3455 static int 3456 unshare_unmount_compare(const void *larg, const void *rarg, void *unused) 3457 { 3458 const unshare_unmount_node_t *l = larg; 3459 const unshare_unmount_node_t *r = rarg; 3460 3461 return (strcmp(l->un_mountp, r->un_mountp)); 3462 } 3463 3464 /* 3465 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an 3466 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem, 3467 * and unmount it appropriately. 3468 */ 3469 static int 3470 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual) 3471 { 3472 zfs_handle_t *zhp; 3473 int ret; 3474 struct stat64 statbuf; 3475 struct extmnttab entry; 3476 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount"; 3477 ino_t path_inode; 3478 3479 /* 3480 * Search for the path in /etc/mnttab. Rather than looking for the 3481 * specific path, which can be fooled by non-standard paths (i.e. ".." 3482 * or "//"), we stat() the path and search for the corresponding 3483 * (major,minor) device pair. 3484 */ 3485 if (stat64(path, &statbuf) != 0) { 3486 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3487 cmdname, path, strerror(errno)); 3488 return (1); 3489 } 3490 path_inode = statbuf.st_ino; 3491 3492 /* 3493 * Search for the given (major,minor) pair in the mount table. 3494 */ 3495 rewind(mnttab_file); 3496 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) { 3497 if (entry.mnt_major == major(statbuf.st_dev) && 3498 entry.mnt_minor == minor(statbuf.st_dev)) 3499 break; 3500 } 3501 if (ret != 0) { 3502 if (op == OP_SHARE) { 3503 (void) fprintf(stderr, gettext("cannot %s '%s': not " 3504 "currently mounted\n"), cmdname, path); 3505 return (1); 3506 } 3507 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"), 3508 path); 3509 if ((ret = umount2(path, flags)) != 0) 3510 (void) fprintf(stderr, gettext("%s: %s\n"), path, 3511 strerror(errno)); 3512 return (ret != 0); 3513 } 3514 3515 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) { 3516 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS " 3517 "filesystem\n"), cmdname, path); 3518 return (1); 3519 } 3520 3521 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3522 ZFS_TYPE_FILESYSTEM)) == NULL) 3523 return (1); 3524 3525 ret = 1; 3526 if (stat64(entry.mnt_mountp, &statbuf) != 0) { 3527 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3528 cmdname, path, strerror(errno)); 3529 goto out; 3530 } else if (statbuf.st_ino != path_inode) { 3531 (void) fprintf(stderr, gettext("cannot " 3532 "%s '%s': not a mountpoint\n"), cmdname, path); 3533 goto out; 3534 } 3535 3536 if (op == OP_SHARE) { 3537 char nfs_mnt_prop[ZFS_MAXPROPLEN]; 3538 char smbshare_prop[ZFS_MAXPROPLEN]; 3539 3540 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop, 3541 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0); 3542 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop, 3543 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0); 3544 3545 if (strcmp(nfs_mnt_prop, "off") == 0 && 3546 strcmp(smbshare_prop, "off") == 0) { 3547 (void) fprintf(stderr, gettext("cannot unshare " 3548 "'%s': legacy share\n"), path); 3549 (void) fprintf(stderr, gettext("use " 3550 "unshare(1M) to unshare this filesystem\n")); 3551 } else if (!zfs_is_shared(zhp)) { 3552 (void) fprintf(stderr, gettext("cannot unshare '%s': " 3553 "not currently shared\n"), path); 3554 } else { 3555 ret = zfs_unshareall_bypath(zhp, path); 3556 } 3557 } else { 3558 char mtpt_prop[ZFS_MAXPROPLEN]; 3559 3560 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop, 3561 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0); 3562 3563 if (is_manual) { 3564 ret = zfs_unmount(zhp, NULL, flags); 3565 } else if (strcmp(mtpt_prop, "legacy") == 0) { 3566 (void) fprintf(stderr, gettext("cannot unmount " 3567 "'%s': legacy mountpoint\n"), 3568 zfs_get_name(zhp)); 3569 (void) fprintf(stderr, gettext("use umount(1M) " 3570 "to unmount this filesystem\n")); 3571 } else { 3572 ret = zfs_unmountall(zhp, flags); 3573 } 3574 } 3575 3576 out: 3577 zfs_close(zhp); 3578 3579 return (ret != 0); 3580 } 3581 3582 /* 3583 * Generic callback for unsharing or unmounting a filesystem. 3584 */ 3585 static int 3586 unshare_unmount(int op, int argc, char **argv) 3587 { 3588 int do_all = 0; 3589 int flags = 0; 3590 int ret = 0; 3591 int types, c; 3592 zfs_handle_t *zhp; 3593 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN]; 3594 char sharesmb[ZFS_MAXPROPLEN]; 3595 3596 /* check options */ 3597 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) { 3598 switch (c) { 3599 case 'a': 3600 do_all = 1; 3601 break; 3602 case 'f': 3603 flags = MS_FORCE; 3604 break; 3605 case '?': 3606 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3607 optopt); 3608 usage(B_FALSE); 3609 } 3610 } 3611 3612 argc -= optind; 3613 argv += optind; 3614 3615 if (do_all) { 3616 /* 3617 * We could make use of zfs_for_each() to walk all datasets in 3618 * the system, but this would be very inefficient, especially 3619 * since we would have to linearly search /etc/mnttab for each 3620 * one. Instead, do one pass through /etc/mnttab looking for 3621 * zfs entries and call zfs_unmount() for each one. 3622 * 3623 * Things get a little tricky if the administrator has created 3624 * mountpoints beneath other ZFS filesystems. In this case, we 3625 * have to unmount the deepest filesystems first. To accomplish 3626 * this, we place all the mountpoints in an AVL tree sorted by 3627 * the special type (dataset name), and walk the result in 3628 * reverse to make sure to get any snapshots first. 3629 */ 3630 struct mnttab entry; 3631 uu_avl_pool_t *pool; 3632 uu_avl_t *tree; 3633 unshare_unmount_node_t *node; 3634 uu_avl_index_t idx; 3635 uu_avl_walk_t *walk; 3636 3637 if (argc != 0) { 3638 (void) fprintf(stderr, gettext("too many arguments\n")); 3639 usage(B_FALSE); 3640 } 3641 3642 if ((pool = uu_avl_pool_create("unmount_pool", 3643 sizeof (unshare_unmount_node_t), 3644 offsetof(unshare_unmount_node_t, un_avlnode), 3645 unshare_unmount_compare, 3646 UU_DEFAULT)) == NULL) { 3647 (void) fprintf(stderr, gettext("internal error: " 3648 "out of memory\n")); 3649 exit(1); 3650 } 3651 3652 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) { 3653 (void) fprintf(stderr, gettext("internal error: " 3654 "out of memory\n")); 3655 exit(1); 3656 } 3657 3658 rewind(mnttab_file); 3659 while (getmntent(mnttab_file, &entry) == 0) { 3660 3661 /* ignore non-ZFS entries */ 3662 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 3663 continue; 3664 3665 /* ignore snapshots */ 3666 if (strchr(entry.mnt_special, '@') != NULL) 3667 continue; 3668 3669 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3670 ZFS_TYPE_FILESYSTEM)) == NULL) { 3671 ret = 1; 3672 continue; 3673 } 3674 3675 switch (op) { 3676 case OP_SHARE: 3677 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3678 nfsiscsi_mnt_prop, 3679 sizeof (nfsiscsi_mnt_prop), 3680 NULL, NULL, 0, B_FALSE) == 0); 3681 if (strcmp(nfsiscsi_mnt_prop, "off") != 0) 3682 break; 3683 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3684 nfsiscsi_mnt_prop, 3685 sizeof (nfsiscsi_mnt_prop), 3686 NULL, NULL, 0, B_FALSE) == 0); 3687 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) 3688 continue; 3689 break; 3690 case OP_MOUNT: 3691 /* Ignore legacy mounts */ 3692 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, 3693 nfsiscsi_mnt_prop, 3694 sizeof (nfsiscsi_mnt_prop), 3695 NULL, NULL, 0, B_FALSE) == 0); 3696 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) 3697 continue; 3698 /* Ignore canmount=noauto mounts */ 3699 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == 3700 ZFS_CANMOUNT_NOAUTO) 3701 continue; 3702 default: 3703 break; 3704 } 3705 3706 node = safe_malloc(sizeof (unshare_unmount_node_t)); 3707 node->un_zhp = zhp; 3708 3709 if ((node->un_mountp = strdup(entry.mnt_mountp)) == 3710 NULL) { 3711 (void) fprintf(stderr, gettext("internal error:" 3712 " out of memory\n")); 3713 exit(1); 3714 } 3715 3716 uu_avl_node_init(node, &node->un_avlnode, pool); 3717 3718 if (uu_avl_find(tree, node, NULL, &idx) == NULL) { 3719 uu_avl_insert(tree, node, idx); 3720 } else { 3721 zfs_close(node->un_zhp); 3722 free(node->un_mountp); 3723 free(node); 3724 } 3725 } 3726 3727 /* 3728 * Walk the AVL tree in reverse, unmounting each filesystem and 3729 * removing it from the AVL tree in the process. 3730 */ 3731 if ((walk = uu_avl_walk_start(tree, 3732 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) { 3733 (void) fprintf(stderr, 3734 gettext("internal error: out of memory")); 3735 exit(1); 3736 } 3737 3738 while ((node = uu_avl_walk_next(walk)) != NULL) { 3739 uu_avl_remove(tree, node); 3740 3741 switch (op) { 3742 case OP_SHARE: 3743 if (zfs_unshareall_bypath(node->un_zhp, 3744 node->un_mountp) != 0) 3745 ret = 1; 3746 break; 3747 3748 case OP_MOUNT: 3749 if (zfs_unmount(node->un_zhp, 3750 node->un_mountp, flags) != 0) 3751 ret = 1; 3752 break; 3753 } 3754 3755 zfs_close(node->un_zhp); 3756 free(node->un_mountp); 3757 free(node); 3758 } 3759 3760 uu_avl_walk_end(walk); 3761 uu_avl_destroy(tree); 3762 uu_avl_pool_destroy(pool); 3763 3764 if (op == OP_SHARE) { 3765 /* 3766 * Finally, unshare any volumes shared via iSCSI. 3767 */ 3768 zfs_handle_t **dslist = NULL; 3769 size_t i, count = 0; 3770 3771 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count, 3772 B_FALSE); 3773 3774 if (count != 0) { 3775 qsort(dslist, count, sizeof (void *), 3776 dataset_cmp); 3777 3778 for (i = 0; i < count; i++) { 3779 if (zfs_unshare_iscsi(dslist[i]) != 0) 3780 ret = 1; 3781 zfs_close(dslist[i]); 3782 } 3783 3784 free(dslist); 3785 } 3786 } 3787 } else { 3788 if (argc != 1) { 3789 if (argc == 0) 3790 (void) fprintf(stderr, 3791 gettext("missing filesystem argument\n")); 3792 else 3793 (void) fprintf(stderr, 3794 gettext("too many arguments\n")); 3795 usage(B_FALSE); 3796 } 3797 3798 /* 3799 * We have an argument, but it may be a full path or a ZFS 3800 * filesystem. Pass full paths off to unmount_path() (shared by 3801 * manual_unmount), otherwise open the filesystem and pass to 3802 * zfs_unmount(). 3803 */ 3804 if (argv[0][0] == '/') 3805 return (unshare_unmount_path(op, argv[0], 3806 flags, B_FALSE)); 3807 3808 types = ZFS_TYPE_FILESYSTEM; 3809 if (op == OP_SHARE) 3810 types |= ZFS_TYPE_VOLUME; 3811 3812 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) 3813 return (1); 3814 3815 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 3816 verify(zfs_prop_get(zhp, op == OP_SHARE ? 3817 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, 3818 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL, 3819 NULL, 0, B_FALSE) == 0); 3820 3821 switch (op) { 3822 case OP_SHARE: 3823 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3824 nfsiscsi_mnt_prop, 3825 sizeof (nfsiscsi_mnt_prop), 3826 NULL, NULL, 0, B_FALSE) == 0); 3827 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3828 sharesmb, sizeof (sharesmb), NULL, NULL, 3829 0, B_FALSE) == 0); 3830 3831 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 && 3832 strcmp(sharesmb, "off") == 0) { 3833 (void) fprintf(stderr, gettext("cannot " 3834 "unshare '%s': legacy share\n"), 3835 zfs_get_name(zhp)); 3836 (void) fprintf(stderr, gettext("use " 3837 "unshare(1M) to unshare this " 3838 "filesystem\n")); 3839 ret = 1; 3840 } else if (!zfs_is_shared(zhp)) { 3841 (void) fprintf(stderr, gettext("cannot " 3842 "unshare '%s': not currently " 3843 "shared\n"), zfs_get_name(zhp)); 3844 ret = 1; 3845 } else if (zfs_unshareall(zhp) != 0) { 3846 ret = 1; 3847 } 3848 break; 3849 3850 case OP_MOUNT: 3851 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) { 3852 (void) fprintf(stderr, gettext("cannot " 3853 "unmount '%s': legacy " 3854 "mountpoint\n"), zfs_get_name(zhp)); 3855 (void) fprintf(stderr, gettext("use " 3856 "umount(1M) to unmount this " 3857 "filesystem\n")); 3858 ret = 1; 3859 } else if (!zfs_is_mounted(zhp, NULL)) { 3860 (void) fprintf(stderr, gettext("cannot " 3861 "unmount '%s': not currently " 3862 "mounted\n"), 3863 zfs_get_name(zhp)); 3864 ret = 1; 3865 } else if (zfs_unmountall(zhp, flags) != 0) { 3866 ret = 1; 3867 } 3868 break; 3869 } 3870 } else { 3871 assert(op == OP_SHARE); 3872 3873 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, 3874 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), 3875 NULL, NULL, 0, B_FALSE) == 0); 3876 3877 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) { 3878 (void) fprintf(stderr, gettext("cannot unshare " 3879 "'%s': 'shareiscsi' property not set\n"), 3880 zfs_get_name(zhp)); 3881 (void) fprintf(stderr, gettext("set " 3882 "'shareiscsi' property or use " 3883 "iscsitadm(1M) to share this volume\n")); 3884 ret = 1; 3885 } else if (!zfs_is_shared_iscsi(zhp)) { 3886 (void) fprintf(stderr, gettext("cannot " 3887 "unshare '%s': not currently shared\n"), 3888 zfs_get_name(zhp)); 3889 ret = 1; 3890 } else if (zfs_unshare_iscsi(zhp) != 0) { 3891 ret = 1; 3892 } 3893 } 3894 3895 zfs_close(zhp); 3896 } 3897 3898 return (ret); 3899 } 3900 3901 /* 3902 * zfs unmount -a 3903 * zfs unmount filesystem 3904 * 3905 * Unmount all filesystems, or a specific ZFS filesystem. 3906 */ 3907 static int 3908 zfs_do_unmount(int argc, char **argv) 3909 { 3910 return (unshare_unmount(OP_MOUNT, argc, argv)); 3911 } 3912 3913 /* 3914 * zfs unshare -a 3915 * zfs unshare filesystem 3916 * 3917 * Unshare all filesystems, or a specific ZFS filesystem. 3918 */ 3919 static int 3920 zfs_do_unshare(int argc, char **argv) 3921 { 3922 return (unshare_unmount(OP_SHARE, argc, argv)); 3923 } 3924 3925 /* ARGSUSED */ 3926 static int 3927 zfs_do_python(int argc, char **argv) 3928 { 3929 (void) execv(pypath, argv-1); 3930 (void) printf("internal error: %s not found\n", pypath); 3931 return (-1); 3932 } 3933 3934 /* 3935 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is 3936 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'. 3937 */ 3938 static int 3939 manual_mount(int argc, char **argv) 3940 { 3941 zfs_handle_t *zhp; 3942 char mountpoint[ZFS_MAXPROPLEN]; 3943 char mntopts[MNT_LINE_MAX] = { '\0' }; 3944 int ret; 3945 int c; 3946 int flags = 0; 3947 char *dataset, *path; 3948 3949 /* check options */ 3950 while ((c = getopt(argc, argv, ":mo:O")) != -1) { 3951 switch (c) { 3952 case 'o': 3953 (void) strlcpy(mntopts, optarg, sizeof (mntopts)); 3954 break; 3955 case 'O': 3956 flags |= MS_OVERLAY; 3957 break; 3958 case 'm': 3959 flags |= MS_NOMNTTAB; 3960 break; 3961 case ':': 3962 (void) fprintf(stderr, gettext("missing argument for " 3963 "'%c' option\n"), optopt); 3964 usage(B_FALSE); 3965 break; 3966 case '?': 3967 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3968 optopt); 3969 (void) fprintf(stderr, gettext("usage: mount [-o opts] " 3970 "<path>\n")); 3971 return (2); 3972 } 3973 } 3974 3975 argc -= optind; 3976 argv += optind; 3977 3978 /* check that we only have two arguments */ 3979 if (argc != 2) { 3980 if (argc == 0) 3981 (void) fprintf(stderr, gettext("missing dataset " 3982 "argument\n")); 3983 else if (argc == 1) 3984 (void) fprintf(stderr, 3985 gettext("missing mountpoint argument\n")); 3986 else 3987 (void) fprintf(stderr, gettext("too many arguments\n")); 3988 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n"); 3989 return (2); 3990 } 3991 3992 dataset = argv[0]; 3993 path = argv[1]; 3994 3995 /* try to open the dataset */ 3996 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL) 3997 return (1); 3998 3999 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 4000 sizeof (mountpoint), NULL, NULL, 0, B_FALSE); 4001 4002 /* check for legacy mountpoint and complain appropriately */ 4003 ret = 0; 4004 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) { 4005 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS, 4006 NULL, 0, mntopts, sizeof (mntopts)) != 0) { 4007 (void) fprintf(stderr, gettext("mount failed: %s\n"), 4008 strerror(errno)); 4009 ret = 1; 4010 } 4011 } else { 4012 (void) fprintf(stderr, gettext("filesystem '%s' cannot be " 4013 "mounted using 'mount -F zfs'\n"), dataset); 4014 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' " 4015 "instead.\n"), path); 4016 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' " 4017 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n")); 4018 (void) fprintf(stderr, gettext("See zfs(1M) for more " 4019 "information.\n")); 4020 ret = 1; 4021 } 4022 4023 return (ret); 4024 } 4025 4026 /* 4027 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow 4028 * unmounts of non-legacy filesystems, as this is the dominant administrative 4029 * interface. 4030 */ 4031 static int 4032 manual_unmount(int argc, char **argv) 4033 { 4034 int flags = 0; 4035 int c; 4036 4037 /* check options */ 4038 while ((c = getopt(argc, argv, "f")) != -1) { 4039 switch (c) { 4040 case 'f': 4041 flags = MS_FORCE; 4042 break; 4043 case '?': 4044 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 4045 optopt); 4046 (void) fprintf(stderr, gettext("usage: unmount [-f] " 4047 "<path>\n")); 4048 return (2); 4049 } 4050 } 4051 4052 argc -= optind; 4053 argv += optind; 4054 4055 /* check arguments */ 4056 if (argc != 1) { 4057 if (argc == 0) 4058 (void) fprintf(stderr, gettext("missing path " 4059 "argument\n")); 4060 else 4061 (void) fprintf(stderr, gettext("too many arguments\n")); 4062 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n")); 4063 return (2); 4064 } 4065 4066 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE)); 4067 } 4068 4069 static int 4070 find_command_idx(char *command, int *idx) 4071 { 4072 int i; 4073 4074 for (i = 0; i < NCOMMAND; i++) { 4075 if (command_table[i].name == NULL) 4076 continue; 4077 4078 if (strcmp(command, command_table[i].name) == 0) { 4079 *idx = i; 4080 return (0); 4081 } 4082 } 4083 return (1); 4084 } 4085 4086 int 4087 main(int argc, char **argv) 4088 { 4089 int ret; 4090 int i; 4091 char *progname; 4092 char *cmdname; 4093 4094 (void) setlocale(LC_ALL, ""); 4095 (void) textdomain(TEXT_DOMAIN); 4096 4097 opterr = 0; 4098 4099 if ((g_zfs = libzfs_init()) == NULL) { 4100 (void) fprintf(stderr, gettext("internal error: failed to " 4101 "initialize ZFS library\n")); 4102 return (1); 4103 } 4104 4105 zpool_set_history_str("zfs", argc, argv, history_str); 4106 verify(zpool_stage_history(g_zfs, history_str) == 0); 4107 4108 libzfs_print_on_error(g_zfs, B_TRUE); 4109 4110 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) { 4111 (void) fprintf(stderr, gettext("internal error: unable to " 4112 "open %s\n"), MNTTAB); 4113 return (1); 4114 } 4115 4116 /* 4117 * This command also doubles as the /etc/fs mount and unmount program. 4118 * Determine if we should take this behavior based on argv[0]. 4119 */ 4120 progname = basename(argv[0]); 4121 if (strcmp(progname, "mount") == 0) { 4122 ret = manual_mount(argc, argv); 4123 } else if (strcmp(progname, "umount") == 0) { 4124 ret = manual_unmount(argc, argv); 4125 } else { 4126 /* 4127 * Make sure the user has specified some command. 4128 */ 4129 if (argc < 2) { 4130 (void) fprintf(stderr, gettext("missing command\n")); 4131 usage(B_FALSE); 4132 } 4133 4134 cmdname = argv[1]; 4135 4136 /* 4137 * The 'umount' command is an alias for 'unmount' 4138 */ 4139 if (strcmp(cmdname, "umount") == 0) 4140 cmdname = "unmount"; 4141 4142 /* 4143 * The 'recv' command is an alias for 'receive' 4144 */ 4145 if (strcmp(cmdname, "recv") == 0) 4146 cmdname = "receive"; 4147 4148 /* 4149 * Special case '-?' 4150 */ 4151 if (strcmp(cmdname, "-?") == 0) 4152 usage(B_TRUE); 4153 4154 /* 4155 * Run the appropriate command. 4156 */ 4157 libzfs_mnttab_cache(g_zfs, B_TRUE); 4158 if (find_command_idx(cmdname, &i) == 0) { 4159 current_command = &command_table[i]; 4160 ret = command_table[i].func(argc - 1, argv + 1); 4161 } else if (strchr(cmdname, '=') != NULL) { 4162 verify(find_command_idx("set", &i) == 0); 4163 current_command = &command_table[i]; 4164 ret = command_table[i].func(argc, argv); 4165 } else { 4166 (void) fprintf(stderr, gettext("unrecognized " 4167 "command '%s'\n"), cmdname); 4168 usage(B_FALSE); 4169 } 4170 libzfs_mnttab_cache(g_zfs, B_FALSE); 4171 } 4172 4173 (void) fclose(mnttab_file); 4174 4175 libzfs_fini(g_zfs); 4176 4177 /* 4178 * The 'ZFS_ABORT' environment variable causes us to dump core on exit 4179 * for the purposes of running ::findleaks. 4180 */ 4181 if (getenv("ZFS_ABORT") != NULL) { 4182 (void) printf("dumping core by request\n"); 4183 abort(); 4184 } 4185 4186 return (ret); 4187 } 4188