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