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 2009 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 field[,...]] [-s source[,...]]\n" 205 "\t <\"all\" | property[,...]> " 206 "[filesystem|volume|snapshot] ...\n")); 207 case HELP_INHERIT: 208 return (gettext("\tinherit [-r] <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 [-R] [-[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 /* 1072 * zfs get [-rHp] [-o field[,field]...] [-s source[,source]...] 1073 * < all | property[,property]... > < fs | snap | vol > ... 1074 * 1075 * -r recurse over any child datasets 1076 * -H scripted mode. Headers are stripped, and fields are separated 1077 * by tabs instead of spaces. 1078 * -o Set of fields to display. One of "name,property,value,source". 1079 * Default is all four. 1080 * -s Set of sources to allow. One of 1081 * "local,default,inherited,temporary,none". Default is all 1082 * five. 1083 * -p Display values in parsable (literal) format. 1084 * 1085 * Prints properties for the given datasets. The user can control which 1086 * columns to display as well as which property types to allow. 1087 */ 1088 1089 /* 1090 * Invoked to display the properties for a single dataset. 1091 */ 1092 static int 1093 get_callback(zfs_handle_t *zhp, void *data) 1094 { 1095 char buf[ZFS_MAXPROPLEN]; 1096 zprop_source_t sourcetype; 1097 char source[ZFS_MAXNAMELEN]; 1098 zprop_get_cbdata_t *cbp = data; 1099 nvlist_t *userprop = zfs_get_user_props(zhp); 1100 zprop_list_t *pl = cbp->cb_proplist; 1101 nvlist_t *propval; 1102 char *strval; 1103 char *sourceval; 1104 1105 for (; pl != NULL; pl = pl->pl_next) { 1106 /* 1107 * Skip the special fake placeholder. This will also skip over 1108 * the name property when 'all' is specified. 1109 */ 1110 if (pl->pl_prop == ZFS_PROP_NAME && 1111 pl == cbp->cb_proplist) 1112 continue; 1113 1114 if (pl->pl_prop != ZPROP_INVAL) { 1115 if (zfs_prop_get(zhp, pl->pl_prop, buf, 1116 sizeof (buf), &sourcetype, source, 1117 sizeof (source), 1118 cbp->cb_literal) != 0) { 1119 if (pl->pl_all) 1120 continue; 1121 if (!zfs_prop_valid_for_type(pl->pl_prop, 1122 ZFS_TYPE_DATASET)) { 1123 (void) fprintf(stderr, 1124 gettext("No such property '%s'\n"), 1125 zfs_prop_to_name(pl->pl_prop)); 1126 continue; 1127 } 1128 sourcetype = ZPROP_SRC_NONE; 1129 (void) strlcpy(buf, "-", sizeof (buf)); 1130 } 1131 1132 zprop_print_one_property(zfs_get_name(zhp), cbp, 1133 zfs_prop_to_name(pl->pl_prop), 1134 buf, sourcetype, source); 1135 } else if (zfs_prop_userquota(pl->pl_user_prop)) { 1136 sourcetype = ZPROP_SRC_LOCAL; 1137 1138 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop, 1139 buf, sizeof (buf), cbp->cb_literal) != 0) { 1140 sourcetype = ZPROP_SRC_NONE; 1141 (void) strlcpy(buf, "-", sizeof (buf)); 1142 } 1143 1144 zprop_print_one_property(zfs_get_name(zhp), cbp, 1145 pl->pl_user_prop, buf, sourcetype, source); 1146 } else { 1147 if (nvlist_lookup_nvlist(userprop, 1148 pl->pl_user_prop, &propval) != 0) { 1149 if (pl->pl_all) 1150 continue; 1151 sourcetype = ZPROP_SRC_NONE; 1152 strval = "-"; 1153 } else { 1154 verify(nvlist_lookup_string(propval, 1155 ZPROP_VALUE, &strval) == 0); 1156 verify(nvlist_lookup_string(propval, 1157 ZPROP_SOURCE, &sourceval) == 0); 1158 1159 if (strcmp(sourceval, 1160 zfs_get_name(zhp)) == 0) { 1161 sourcetype = ZPROP_SRC_LOCAL; 1162 } else { 1163 sourcetype = ZPROP_SRC_INHERITED; 1164 (void) strlcpy(source, 1165 sourceval, sizeof (source)); 1166 } 1167 } 1168 1169 zprop_print_one_property(zfs_get_name(zhp), cbp, 1170 pl->pl_user_prop, strval, sourcetype, 1171 source); 1172 } 1173 } 1174 1175 return (0); 1176 } 1177 1178 static int 1179 zfs_do_get(int argc, char **argv) 1180 { 1181 zprop_get_cbdata_t cb = { 0 }; 1182 int i, c, flags = 0; 1183 char *value, *fields; 1184 int ret; 1185 int limit = 0; 1186 zprop_list_t fake_name = { 0 }; 1187 1188 /* 1189 * Set up default columns and sources. 1190 */ 1191 cb.cb_sources = ZPROP_SRC_ALL; 1192 cb.cb_columns[0] = GET_COL_NAME; 1193 cb.cb_columns[1] = GET_COL_PROPERTY; 1194 cb.cb_columns[2] = GET_COL_VALUE; 1195 cb.cb_columns[3] = GET_COL_SOURCE; 1196 cb.cb_type = ZFS_TYPE_DATASET; 1197 1198 /* check options */ 1199 while ((c = getopt(argc, argv, ":d:o:s:rHp")) != -1) { 1200 switch (c) { 1201 case 'p': 1202 cb.cb_literal = B_TRUE; 1203 break; 1204 case 'd': 1205 limit = parse_depth(optarg, &flags); 1206 break; 1207 case 'r': 1208 flags |= ZFS_ITER_RECURSE; 1209 break; 1210 case 'H': 1211 cb.cb_scripted = B_TRUE; 1212 break; 1213 case ':': 1214 (void) fprintf(stderr, gettext("missing argument for " 1215 "'%c' option\n"), optopt); 1216 usage(B_FALSE); 1217 break; 1218 case 'o': 1219 /* 1220 * Process the set of columns to display. We zero out 1221 * the structure to give us a blank slate. 1222 */ 1223 bzero(&cb.cb_columns, sizeof (cb.cb_columns)); 1224 i = 0; 1225 while (*optarg != '\0') { 1226 static char *col_subopts[] = 1227 { "name", "property", "value", "source", 1228 NULL }; 1229 1230 if (i == 4) { 1231 (void) fprintf(stderr, gettext("too " 1232 "many fields given to -o " 1233 "option\n")); 1234 usage(B_FALSE); 1235 } 1236 1237 switch (getsubopt(&optarg, col_subopts, 1238 &value)) { 1239 case 0: 1240 cb.cb_columns[i++] = GET_COL_NAME; 1241 break; 1242 case 1: 1243 cb.cb_columns[i++] = GET_COL_PROPERTY; 1244 break; 1245 case 2: 1246 cb.cb_columns[i++] = GET_COL_VALUE; 1247 break; 1248 case 3: 1249 cb.cb_columns[i++] = GET_COL_SOURCE; 1250 break; 1251 default: 1252 (void) fprintf(stderr, 1253 gettext("invalid column name " 1254 "'%s'\n"), value); 1255 usage(B_FALSE); 1256 } 1257 } 1258 break; 1259 1260 case 's': 1261 cb.cb_sources = 0; 1262 while (*optarg != '\0') { 1263 static char *source_subopts[] = { 1264 "local", "default", "inherited", 1265 "temporary", "none", NULL }; 1266 1267 switch (getsubopt(&optarg, source_subopts, 1268 &value)) { 1269 case 0: 1270 cb.cb_sources |= ZPROP_SRC_LOCAL; 1271 break; 1272 case 1: 1273 cb.cb_sources |= ZPROP_SRC_DEFAULT; 1274 break; 1275 case 2: 1276 cb.cb_sources |= ZPROP_SRC_INHERITED; 1277 break; 1278 case 3: 1279 cb.cb_sources |= ZPROP_SRC_TEMPORARY; 1280 break; 1281 case 4: 1282 cb.cb_sources |= ZPROP_SRC_NONE; 1283 break; 1284 default: 1285 (void) fprintf(stderr, 1286 gettext("invalid source " 1287 "'%s'\n"), value); 1288 usage(B_FALSE); 1289 } 1290 } 1291 break; 1292 1293 case '?': 1294 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1295 optopt); 1296 usage(B_FALSE); 1297 } 1298 } 1299 1300 argc -= optind; 1301 argv += optind; 1302 1303 if (argc < 1) { 1304 (void) fprintf(stderr, gettext("missing property " 1305 "argument\n")); 1306 usage(B_FALSE); 1307 } 1308 1309 fields = argv[0]; 1310 1311 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1312 != 0) 1313 usage(B_FALSE); 1314 1315 argc--; 1316 argv++; 1317 1318 /* 1319 * As part of zfs_expand_proplist(), we keep track of the maximum column 1320 * width for each property. For the 'NAME' (and 'SOURCE') columns, we 1321 * need to know the maximum name length. However, the user likely did 1322 * not specify 'name' as one of the properties to fetch, so we need to 1323 * make sure we always include at least this property for 1324 * print_get_headers() to work properly. 1325 */ 1326 if (cb.cb_proplist != NULL) { 1327 fake_name.pl_prop = ZFS_PROP_NAME; 1328 fake_name.pl_width = strlen(gettext("NAME")); 1329 fake_name.pl_next = cb.cb_proplist; 1330 cb.cb_proplist = &fake_name; 1331 } 1332 1333 cb.cb_first = B_TRUE; 1334 1335 /* run for each object */ 1336 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, NULL, 1337 &cb.cb_proplist, limit, get_callback, &cb); 1338 1339 if (cb.cb_proplist == &fake_name) 1340 zprop_free_list(fake_name.pl_next); 1341 else 1342 zprop_free_list(cb.cb_proplist); 1343 1344 return (ret); 1345 } 1346 1347 /* 1348 * inherit [-r] <property> <fs|vol> ... 1349 * 1350 * -r Recurse over all children 1351 * 1352 * For each dataset specified on the command line, inherit the given property 1353 * from its parent. Inheriting a property at the pool level will cause it to 1354 * use the default value. The '-r' flag will recurse over all children, and is 1355 * useful for setting a property on a hierarchy-wide basis, regardless of any 1356 * local modifications for each dataset. 1357 */ 1358 1359 static int 1360 inherit_recurse_cb(zfs_handle_t *zhp, void *data) 1361 { 1362 char *propname = data; 1363 zfs_prop_t prop = zfs_name_to_prop(propname); 1364 1365 /* 1366 * If we're doing it recursively, then ignore properties that 1367 * are not valid for this type of dataset. 1368 */ 1369 if (prop != ZPROP_INVAL && 1370 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp))) 1371 return (0); 1372 1373 return (zfs_prop_inherit(zhp, propname) != 0); 1374 } 1375 1376 static int 1377 inherit_cb(zfs_handle_t *zhp, void *data) 1378 { 1379 char *propname = data; 1380 1381 return (zfs_prop_inherit(zhp, propname) != 0); 1382 } 1383 1384 static int 1385 zfs_do_inherit(int argc, char **argv) 1386 { 1387 int c; 1388 zfs_prop_t prop; 1389 char *propname; 1390 int ret; 1391 int flags = 0; 1392 1393 /* check options */ 1394 while ((c = getopt(argc, argv, "r")) != -1) { 1395 switch (c) { 1396 case 'r': 1397 flags |= ZFS_ITER_RECURSE; 1398 break; 1399 case '?': 1400 default: 1401 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1402 optopt); 1403 usage(B_FALSE); 1404 } 1405 } 1406 1407 argc -= optind; 1408 argv += optind; 1409 1410 /* check number of arguments */ 1411 if (argc < 1) { 1412 (void) fprintf(stderr, gettext("missing property argument\n")); 1413 usage(B_FALSE); 1414 } 1415 if (argc < 2) { 1416 (void) fprintf(stderr, gettext("missing dataset argument\n")); 1417 usage(B_FALSE); 1418 } 1419 1420 propname = argv[0]; 1421 argc--; 1422 argv++; 1423 1424 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) { 1425 if (zfs_prop_readonly(prop)) { 1426 (void) fprintf(stderr, gettext( 1427 "%s property is read-only\n"), 1428 propname); 1429 return (1); 1430 } 1431 if (!zfs_prop_inheritable(prop)) { 1432 (void) fprintf(stderr, gettext("'%s' property cannot " 1433 "be inherited\n"), propname); 1434 if (prop == ZFS_PROP_QUOTA || 1435 prop == ZFS_PROP_RESERVATION || 1436 prop == ZFS_PROP_REFQUOTA || 1437 prop == ZFS_PROP_REFRESERVATION) 1438 (void) fprintf(stderr, gettext("use 'zfs set " 1439 "%s=none' to clear\n"), propname); 1440 return (1); 1441 } 1442 } else if (!zfs_prop_user(propname)) { 1443 (void) fprintf(stderr, gettext("invalid property '%s'\n"), 1444 propname); 1445 usage(B_FALSE); 1446 } 1447 1448 if (flags & ZFS_ITER_RECURSE) { 1449 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, 1450 NULL, NULL, 0, inherit_recurse_cb, propname); 1451 } else { 1452 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, 1453 NULL, NULL, 0, inherit_cb, propname); 1454 } 1455 1456 return (ret); 1457 } 1458 1459 typedef struct upgrade_cbdata { 1460 uint64_t cb_numupgraded; 1461 uint64_t cb_numsamegraded; 1462 uint64_t cb_numfailed; 1463 uint64_t cb_version; 1464 boolean_t cb_newer; 1465 boolean_t cb_foundone; 1466 char cb_lastfs[ZFS_MAXNAMELEN]; 1467 } upgrade_cbdata_t; 1468 1469 static int 1470 same_pool(zfs_handle_t *zhp, const char *name) 1471 { 1472 int len1 = strcspn(name, "/@"); 1473 const char *zhname = zfs_get_name(zhp); 1474 int len2 = strcspn(zhname, "/@"); 1475 1476 if (len1 != len2) 1477 return (B_FALSE); 1478 return (strncmp(name, zhname, len1) == 0); 1479 } 1480 1481 static int 1482 upgrade_list_callback(zfs_handle_t *zhp, void *data) 1483 { 1484 upgrade_cbdata_t *cb = data; 1485 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1486 1487 /* list if it's old/new */ 1488 if ((!cb->cb_newer && version < ZPL_VERSION) || 1489 (cb->cb_newer && version > ZPL_VERSION)) { 1490 char *str; 1491 if (cb->cb_newer) { 1492 str = gettext("The following filesystems are " 1493 "formatted using a newer software version and\n" 1494 "cannot be accessed on the current system.\n\n"); 1495 } else { 1496 str = gettext("The following filesystems are " 1497 "out of date, and can be upgraded. After being\n" 1498 "upgraded, these filesystems (and any 'zfs send' " 1499 "streams generated from\n" 1500 "subsequent snapshots) will no longer be " 1501 "accessible by older software versions.\n\n"); 1502 } 1503 1504 if (!cb->cb_foundone) { 1505 (void) puts(str); 1506 (void) printf(gettext("VER FILESYSTEM\n")); 1507 (void) printf(gettext("--- ------------\n")); 1508 cb->cb_foundone = B_TRUE; 1509 } 1510 1511 (void) printf("%2u %s\n", version, zfs_get_name(zhp)); 1512 } 1513 1514 return (0); 1515 } 1516 1517 static int 1518 upgrade_set_callback(zfs_handle_t *zhp, void *data) 1519 { 1520 upgrade_cbdata_t *cb = data; 1521 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1522 int i; 1523 static struct { int zplver; int spaver; } table[] = { 1524 {ZPL_VERSION_FUID, SPA_VERSION_FUID}, 1525 {ZPL_VERSION_USERSPACE, SPA_VERSION_USERSPACE}, 1526 {0, 0} 1527 }; 1528 1529 1530 for (i = 0; table[i].zplver; i++) { 1531 if (cb->cb_version >= table[i].zplver) { 1532 int spa_version; 1533 1534 if (zfs_spa_version(zhp, &spa_version) < 0) 1535 return (-1); 1536 1537 if (spa_version < table[i].spaver) { 1538 /* can't upgrade */ 1539 (void) printf(gettext("%s: can not be " 1540 "upgraded; the pool version needs to first " 1541 "be upgraded\nto version %d\n\n"), 1542 zfs_get_name(zhp), table[i].spaver); 1543 cb->cb_numfailed++; 1544 return (0); 1545 } 1546 } 1547 } 1548 1549 /* upgrade */ 1550 if (version < cb->cb_version) { 1551 char verstr[16]; 1552 (void) snprintf(verstr, sizeof (verstr), 1553 "%llu", cb->cb_version); 1554 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) { 1555 /* 1556 * If they did "zfs upgrade -a", then we could 1557 * be doing ioctls to different pools. We need 1558 * to log this history once to each pool. 1559 */ 1560 verify(zpool_stage_history(g_zfs, history_str) == 0); 1561 } 1562 if (zfs_prop_set(zhp, "version", verstr) == 0) 1563 cb->cb_numupgraded++; 1564 else 1565 cb->cb_numfailed++; 1566 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp)); 1567 } else if (version > cb->cb_version) { 1568 /* can't downgrade */ 1569 (void) printf(gettext("%s: can not be downgraded; " 1570 "it is already at version %u\n"), 1571 zfs_get_name(zhp), version); 1572 cb->cb_numfailed++; 1573 } else { 1574 cb->cb_numsamegraded++; 1575 } 1576 return (0); 1577 } 1578 1579 /* 1580 * zfs upgrade 1581 * zfs upgrade -v 1582 * zfs upgrade [-r] [-V <version>] <-a | filesystem> 1583 */ 1584 static int 1585 zfs_do_upgrade(int argc, char **argv) 1586 { 1587 boolean_t all = B_FALSE; 1588 boolean_t showversions = B_FALSE; 1589 int ret; 1590 upgrade_cbdata_t cb = { 0 }; 1591 char c; 1592 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS; 1593 1594 /* check options */ 1595 while ((c = getopt(argc, argv, "rvV:a")) != -1) { 1596 switch (c) { 1597 case 'r': 1598 flags |= ZFS_ITER_RECURSE; 1599 break; 1600 case 'v': 1601 showversions = B_TRUE; 1602 break; 1603 case 'V': 1604 if (zfs_prop_string_to_index(ZFS_PROP_VERSION, 1605 optarg, &cb.cb_version) != 0) { 1606 (void) fprintf(stderr, 1607 gettext("invalid version %s\n"), optarg); 1608 usage(B_FALSE); 1609 } 1610 break; 1611 case 'a': 1612 all = B_TRUE; 1613 break; 1614 case '?': 1615 default: 1616 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1617 optopt); 1618 usage(B_FALSE); 1619 } 1620 } 1621 1622 argc -= optind; 1623 argv += optind; 1624 1625 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version)) 1626 usage(B_FALSE); 1627 if (showversions && (flags & ZFS_ITER_RECURSE || all || 1628 cb.cb_version || argc)) 1629 usage(B_FALSE); 1630 if ((all || argc) && (showversions)) 1631 usage(B_FALSE); 1632 if (all && argc) 1633 usage(B_FALSE); 1634 1635 if (showversions) { 1636 /* Show info on available versions. */ 1637 (void) printf(gettext("The following filesystem versions are " 1638 "supported:\n\n")); 1639 (void) printf(gettext("VER DESCRIPTION\n")); 1640 (void) printf("--- -----------------------------------------" 1641 "---------------\n"); 1642 (void) printf(gettext(" 1 Initial ZFS filesystem version\n")); 1643 (void) printf(gettext(" 2 Enhanced directory entries\n")); 1644 (void) printf(gettext(" 3 Case insensitive and File system " 1645 "unique identifier (FUID)\n")); 1646 (void) printf(gettext(" 4 userquota, groupquota " 1647 "properties\n")); 1648 (void) printf(gettext("\nFor more information on a particular " 1649 "version, including supported releases, see:\n\n")); 1650 (void) printf("http://www.opensolaris.org/os/community/zfs/" 1651 "version/zpl/N\n\n"); 1652 (void) printf(gettext("Where 'N' is the version number.\n")); 1653 ret = 0; 1654 } else if (argc || all) { 1655 /* Upgrade filesystems */ 1656 if (cb.cb_version == 0) 1657 cb.cb_version = ZPL_VERSION; 1658 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM, 1659 NULL, NULL, 0, upgrade_set_callback, &cb); 1660 (void) printf(gettext("%llu filesystems upgraded\n"), 1661 cb.cb_numupgraded); 1662 if (cb.cb_numsamegraded) { 1663 (void) printf(gettext("%llu filesystems already at " 1664 "this version\n"), 1665 cb.cb_numsamegraded); 1666 } 1667 if (cb.cb_numfailed != 0) 1668 ret = 1; 1669 } else { 1670 /* List old-version filesytems */ 1671 boolean_t found; 1672 (void) printf(gettext("This system is currently running " 1673 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION); 1674 1675 flags |= ZFS_ITER_RECURSE; 1676 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM, 1677 NULL, NULL, 0, upgrade_list_callback, &cb); 1678 1679 found = cb.cb_foundone; 1680 cb.cb_foundone = B_FALSE; 1681 cb.cb_newer = B_TRUE; 1682 1683 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM, 1684 NULL, NULL, 0, upgrade_list_callback, &cb); 1685 1686 if (!cb.cb_foundone && !found) { 1687 (void) printf(gettext("All filesystems are " 1688 "formatted with the current version.\n")); 1689 } 1690 } 1691 1692 return (ret); 1693 } 1694 1695 /* 1696 * zfs userspace 1697 */ 1698 static int 1699 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space) 1700 { 1701 zfs_userquota_prop_t *typep = arg; 1702 zfs_userquota_prop_t p = *typep; 1703 char *name = NULL; 1704 char *ug, *propname; 1705 char namebuf[32]; 1706 char sizebuf[32]; 1707 1708 if (domain == NULL || domain[0] == '\0') { 1709 if (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) { 1710 struct group *g = getgrgid(rid); 1711 if (g) 1712 name = g->gr_name; 1713 } else { 1714 struct passwd *p = getpwuid(rid); 1715 if (p) 1716 name = p->pw_name; 1717 } 1718 } 1719 1720 if (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) 1721 ug = "group"; 1722 else 1723 ug = "user"; 1724 1725 if (p == ZFS_PROP_USERUSED || p == ZFS_PROP_GROUPUSED) 1726 propname = "used"; 1727 else 1728 propname = "quota"; 1729 1730 if (name == NULL) { 1731 (void) snprintf(namebuf, sizeof (namebuf), 1732 "%llu", (longlong_t)rid); 1733 name = namebuf; 1734 } 1735 zfs_nicenum(space, sizebuf, sizeof (sizebuf)); 1736 1737 (void) printf("%s %s %s%c%s %s\n", propname, ug, domain, 1738 domain[0] ? '-' : ' ', name, sizebuf); 1739 1740 return (0); 1741 } 1742 1743 static int 1744 zfs_do_userspace(int argc, char **argv) 1745 { 1746 zfs_handle_t *zhp; 1747 zfs_userquota_prop_t p; 1748 int error; 1749 1750 /* 1751 * Try the python version. If the execv fails, we'll continue 1752 * and do a simplistic implementation. 1753 */ 1754 (void) execv(pypath, argv-1); 1755 1756 (void) printf("internal error: %s not found\n" 1757 "falling back on built-in implementation, " 1758 "some features will not work\n", pypath); 1759 1760 if ((zhp = zfs_open(g_zfs, argv[argc-1], ZFS_TYPE_DATASET)) == NULL) 1761 return (1); 1762 1763 (void) printf("PROP TYPE NAME VALUE\n"); 1764 1765 for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) { 1766 error = zfs_userspace(zhp, p, userspace_cb, &p); 1767 if (error) 1768 break; 1769 } 1770 return (error); 1771 } 1772 1773 /* 1774 * list [-r][-d max] [-H] [-o property[,property]...] [-t type[,type]...] 1775 * [-s property [-s property]...] [-S property [-S property]...] 1776 * <dataset> ... 1777 * 1778 * -r Recurse over all children 1779 * -d Limit recursion by depth. 1780 * -H Scripted mode; elide headers and separate columns by tabs 1781 * -o Control which fields to display. 1782 * -t Control which object types to display. 1783 * -s Specify sort columns, descending order. 1784 * -S Specify sort columns, ascending order. 1785 * 1786 * When given no arguments, lists all filesystems in the system. 1787 * Otherwise, list the specified datasets, optionally recursing down them if 1788 * '-r' is specified. 1789 */ 1790 typedef struct list_cbdata { 1791 boolean_t cb_first; 1792 boolean_t cb_scripted; 1793 zprop_list_t *cb_proplist; 1794 } list_cbdata_t; 1795 1796 /* 1797 * Given a list of columns to display, output appropriate headers for each one. 1798 */ 1799 static void 1800 print_header(zprop_list_t *pl) 1801 { 1802 char headerbuf[ZFS_MAXPROPLEN]; 1803 const char *header; 1804 int i; 1805 boolean_t first = B_TRUE; 1806 boolean_t right_justify; 1807 1808 for (; pl != NULL; pl = pl->pl_next) { 1809 if (!first) { 1810 (void) printf(" "); 1811 } else { 1812 first = B_FALSE; 1813 } 1814 1815 right_justify = B_FALSE; 1816 if (pl->pl_prop != ZPROP_INVAL) { 1817 header = zfs_prop_column_name(pl->pl_prop); 1818 right_justify = zfs_prop_align_right(pl->pl_prop); 1819 } else { 1820 for (i = 0; pl->pl_user_prop[i] != '\0'; i++) 1821 headerbuf[i] = toupper(pl->pl_user_prop[i]); 1822 headerbuf[i] = '\0'; 1823 header = headerbuf; 1824 } 1825 1826 if (pl->pl_next == NULL && !right_justify) 1827 (void) printf("%s", header); 1828 else if (right_justify) 1829 (void) printf("%*s", pl->pl_width, header); 1830 else 1831 (void) printf("%-*s", pl->pl_width, header); 1832 } 1833 1834 (void) printf("\n"); 1835 } 1836 1837 /* 1838 * Given a dataset and a list of fields, print out all the properties according 1839 * to the described layout. 1840 */ 1841 static void 1842 print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted) 1843 { 1844 boolean_t first = B_TRUE; 1845 char property[ZFS_MAXPROPLEN]; 1846 nvlist_t *userprops = zfs_get_user_props(zhp); 1847 nvlist_t *propval; 1848 char *propstr; 1849 boolean_t right_justify; 1850 int width; 1851 1852 for (; pl != NULL; pl = pl->pl_next) { 1853 if (!first) { 1854 if (scripted) 1855 (void) printf("\t"); 1856 else 1857 (void) printf(" "); 1858 } else { 1859 first = B_FALSE; 1860 } 1861 1862 if (pl->pl_prop != ZPROP_INVAL) { 1863 if (zfs_prop_get(zhp, pl->pl_prop, property, 1864 sizeof (property), NULL, NULL, 0, B_FALSE) != 0) 1865 propstr = "-"; 1866 else 1867 propstr = property; 1868 1869 right_justify = zfs_prop_align_right(pl->pl_prop); 1870 } else if (zfs_prop_userquota(pl->pl_user_prop)) { 1871 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop, 1872 property, sizeof (property), B_FALSE) != 0) 1873 propstr = "-"; 1874 else 1875 propstr = property; 1876 right_justify = B_TRUE; 1877 } else { 1878 if (nvlist_lookup_nvlist(userprops, 1879 pl->pl_user_prop, &propval) != 0) 1880 propstr = "-"; 1881 else 1882 verify(nvlist_lookup_string(propval, 1883 ZPROP_VALUE, &propstr) == 0); 1884 right_justify = B_FALSE; 1885 } 1886 1887 width = pl->pl_width; 1888 1889 /* 1890 * If this is being called in scripted mode, or if this is the 1891 * last column and it is left-justified, don't include a width 1892 * format specifier. 1893 */ 1894 if (scripted || (pl->pl_next == NULL && !right_justify)) 1895 (void) printf("%s", propstr); 1896 else if (right_justify) 1897 (void) printf("%*s", width, propstr); 1898 else 1899 (void) printf("%-*s", width, propstr); 1900 } 1901 1902 (void) printf("\n"); 1903 } 1904 1905 /* 1906 * Generic callback function to list a dataset or snapshot. 1907 */ 1908 static int 1909 list_callback(zfs_handle_t *zhp, void *data) 1910 { 1911 list_cbdata_t *cbp = data; 1912 1913 if (cbp->cb_first) { 1914 if (!cbp->cb_scripted) 1915 print_header(cbp->cb_proplist); 1916 cbp->cb_first = B_FALSE; 1917 } 1918 1919 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted); 1920 1921 return (0); 1922 } 1923 1924 static int 1925 zfs_do_list(int argc, char **argv) 1926 { 1927 int c; 1928 boolean_t scripted = B_FALSE; 1929 static char default_fields[] = 1930 "name,used,available,referenced,mountpoint"; 1931 int types = ZFS_TYPE_DATASET; 1932 boolean_t types_specified = B_FALSE; 1933 char *fields = NULL; 1934 list_cbdata_t cb = { 0 }; 1935 char *value; 1936 int limit = 0; 1937 int ret; 1938 zfs_sort_column_t *sortcol = NULL; 1939 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS; 1940 1941 /* check options */ 1942 while ((c = getopt(argc, argv, ":d:o:rt:Hs:S:")) != -1) { 1943 switch (c) { 1944 case 'o': 1945 fields = optarg; 1946 break; 1947 case 'd': 1948 limit = parse_depth(optarg, &flags); 1949 break; 1950 case 'r': 1951 flags |= ZFS_ITER_RECURSE; 1952 break; 1953 case 'H': 1954 scripted = B_TRUE; 1955 break; 1956 case 's': 1957 if (zfs_add_sort_column(&sortcol, optarg, 1958 B_FALSE) != 0) { 1959 (void) fprintf(stderr, 1960 gettext("invalid property '%s'\n"), optarg); 1961 usage(B_FALSE); 1962 } 1963 break; 1964 case 'S': 1965 if (zfs_add_sort_column(&sortcol, optarg, 1966 B_TRUE) != 0) { 1967 (void) fprintf(stderr, 1968 gettext("invalid property '%s'\n"), optarg); 1969 usage(B_FALSE); 1970 } 1971 break; 1972 case 't': 1973 types = 0; 1974 types_specified = B_TRUE; 1975 flags &= ~ZFS_ITER_PROP_LISTSNAPS; 1976 while (*optarg != '\0') { 1977 static char *type_subopts[] = { "filesystem", 1978 "volume", "snapshot", "all", NULL }; 1979 1980 switch (getsubopt(&optarg, type_subopts, 1981 &value)) { 1982 case 0: 1983 types |= ZFS_TYPE_FILESYSTEM; 1984 break; 1985 case 1: 1986 types |= ZFS_TYPE_VOLUME; 1987 break; 1988 case 2: 1989 types |= ZFS_TYPE_SNAPSHOT; 1990 break; 1991 case 3: 1992 types = ZFS_TYPE_DATASET; 1993 break; 1994 1995 default: 1996 (void) fprintf(stderr, 1997 gettext("invalid type '%s'\n"), 1998 value); 1999 usage(B_FALSE); 2000 } 2001 } 2002 break; 2003 case ':': 2004 (void) fprintf(stderr, gettext("missing argument for " 2005 "'%c' option\n"), optopt); 2006 usage(B_FALSE); 2007 break; 2008 case '?': 2009 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2010 optopt); 2011 usage(B_FALSE); 2012 } 2013 } 2014 2015 argc -= optind; 2016 argv += optind; 2017 2018 if (fields == NULL) 2019 fields = default_fields; 2020 2021 /* 2022 * If "-o space" and no types were specified, don't display snapshots. 2023 */ 2024 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE) 2025 types &= ~ZFS_TYPE_SNAPSHOT; 2026 2027 /* 2028 * If the user specifies '-o all', the zprop_get_list() doesn't 2029 * normally include the name of the dataset. For 'zfs list', we always 2030 * want this property to be first. 2031 */ 2032 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 2033 != 0) 2034 usage(B_FALSE); 2035 2036 cb.cb_scripted = scripted; 2037 cb.cb_first = B_TRUE; 2038 2039 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist, 2040 limit, list_callback, &cb); 2041 2042 zprop_free_list(cb.cb_proplist); 2043 zfs_free_sort_columns(sortcol); 2044 2045 if (ret == 0 && cb.cb_first && !cb.cb_scripted) 2046 (void) printf(gettext("no datasets available\n")); 2047 2048 return (ret); 2049 } 2050 2051 /* 2052 * zfs rename <fs | snap | vol> <fs | snap | vol> 2053 * zfs rename -p <fs | vol> <fs | vol> 2054 * zfs rename -r <snap> <snap> 2055 * 2056 * Renames the given dataset to another of the same type. 2057 * 2058 * The '-p' flag creates all the non-existing ancestors of the target first. 2059 */ 2060 /* ARGSUSED */ 2061 static int 2062 zfs_do_rename(int argc, char **argv) 2063 { 2064 zfs_handle_t *zhp; 2065 int c; 2066 int ret; 2067 boolean_t recurse = B_FALSE; 2068 boolean_t parents = B_FALSE; 2069 2070 /* check options */ 2071 while ((c = getopt(argc, argv, "pr")) != -1) { 2072 switch (c) { 2073 case 'p': 2074 parents = B_TRUE; 2075 break; 2076 case 'r': 2077 recurse = B_TRUE; 2078 break; 2079 case '?': 2080 default: 2081 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2082 optopt); 2083 usage(B_FALSE); 2084 } 2085 } 2086 2087 argc -= optind; 2088 argv += optind; 2089 2090 /* check number of arguments */ 2091 if (argc < 1) { 2092 (void) fprintf(stderr, gettext("missing source dataset " 2093 "argument\n")); 2094 usage(B_FALSE); 2095 } 2096 if (argc < 2) { 2097 (void) fprintf(stderr, gettext("missing target dataset " 2098 "argument\n")); 2099 usage(B_FALSE); 2100 } 2101 if (argc > 2) { 2102 (void) fprintf(stderr, gettext("too many arguments\n")); 2103 usage(B_FALSE); 2104 } 2105 2106 if (recurse && parents) { 2107 (void) fprintf(stderr, gettext("-p and -r options are mutually " 2108 "exclusive\n")); 2109 usage(B_FALSE); 2110 } 2111 2112 if (recurse && strchr(argv[0], '@') == 0) { 2113 (void) fprintf(stderr, gettext("source dataset for recursive " 2114 "rename must be a snapshot\n")); 2115 usage(B_FALSE); 2116 } 2117 2118 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM | 2119 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL) 2120 return (1); 2121 2122 /* If we were asked and the name looks good, try to create ancestors. */ 2123 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) && 2124 zfs_create_ancestors(g_zfs, argv[1]) != 0) { 2125 zfs_close(zhp); 2126 return (1); 2127 } 2128 2129 ret = (zfs_rename(zhp, argv[1], recurse) != 0); 2130 2131 zfs_close(zhp); 2132 return (ret); 2133 } 2134 2135 /* 2136 * zfs promote <fs> 2137 * 2138 * Promotes the given clone fs to be the parent 2139 */ 2140 /* ARGSUSED */ 2141 static int 2142 zfs_do_promote(int argc, char **argv) 2143 { 2144 zfs_handle_t *zhp; 2145 int ret; 2146 2147 /* check options */ 2148 if (argc > 1 && argv[1][0] == '-') { 2149 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2150 argv[1][1]); 2151 usage(B_FALSE); 2152 } 2153 2154 /* check number of arguments */ 2155 if (argc < 2) { 2156 (void) fprintf(stderr, gettext("missing clone filesystem" 2157 " argument\n")); 2158 usage(B_FALSE); 2159 } 2160 if (argc > 2) { 2161 (void) fprintf(stderr, gettext("too many arguments\n")); 2162 usage(B_FALSE); 2163 } 2164 2165 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2166 if (zhp == NULL) 2167 return (1); 2168 2169 ret = (zfs_promote(zhp) != 0); 2170 2171 2172 zfs_close(zhp); 2173 return (ret); 2174 } 2175 2176 /* 2177 * zfs rollback [-rRf] <snapshot> 2178 * 2179 * -r Delete any intervening snapshots before doing rollback 2180 * -R Delete any snapshots and their clones 2181 * -f ignored for backwards compatability 2182 * 2183 * Given a filesystem, rollback to a specific snapshot, discarding any changes 2184 * since then and making it the active dataset. If more recent snapshots exist, 2185 * the command will complain unless the '-r' flag is given. 2186 */ 2187 typedef struct rollback_cbdata { 2188 uint64_t cb_create; 2189 boolean_t cb_first; 2190 int cb_doclones; 2191 char *cb_target; 2192 int cb_error; 2193 boolean_t cb_recurse; 2194 boolean_t cb_dependent; 2195 } rollback_cbdata_t; 2196 2197 /* 2198 * Report any snapshots more recent than the one specified. Used when '-r' is 2199 * not specified. We reuse this same callback for the snapshot dependents - if 2200 * 'cb_dependent' is set, then this is a dependent and we should report it 2201 * without checking the transaction group. 2202 */ 2203 static int 2204 rollback_check(zfs_handle_t *zhp, void *data) 2205 { 2206 rollback_cbdata_t *cbp = data; 2207 2208 if (cbp->cb_doclones) { 2209 zfs_close(zhp); 2210 return (0); 2211 } 2212 2213 if (!cbp->cb_dependent) { 2214 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 && 2215 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && 2216 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > 2217 cbp->cb_create) { 2218 2219 if (cbp->cb_first && !cbp->cb_recurse) { 2220 (void) fprintf(stderr, gettext("cannot " 2221 "rollback to '%s': more recent snapshots " 2222 "exist\n"), 2223 cbp->cb_target); 2224 (void) fprintf(stderr, gettext("use '-r' to " 2225 "force deletion of the following " 2226 "snapshots:\n")); 2227 cbp->cb_first = 0; 2228 cbp->cb_error = 1; 2229 } 2230 2231 if (cbp->cb_recurse) { 2232 cbp->cb_dependent = B_TRUE; 2233 if (zfs_iter_dependents(zhp, B_TRUE, 2234 rollback_check, cbp) != 0) { 2235 zfs_close(zhp); 2236 return (-1); 2237 } 2238 cbp->cb_dependent = B_FALSE; 2239 } else { 2240 (void) fprintf(stderr, "%s\n", 2241 zfs_get_name(zhp)); 2242 } 2243 } 2244 } else { 2245 if (cbp->cb_first && cbp->cb_recurse) { 2246 (void) fprintf(stderr, gettext("cannot rollback to " 2247 "'%s': clones of previous snapshots exist\n"), 2248 cbp->cb_target); 2249 (void) fprintf(stderr, gettext("use '-R' to " 2250 "force deletion of the following clones and " 2251 "dependents:\n")); 2252 cbp->cb_first = 0; 2253 cbp->cb_error = 1; 2254 } 2255 2256 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 2257 } 2258 2259 zfs_close(zhp); 2260 return (0); 2261 } 2262 2263 static int 2264 zfs_do_rollback(int argc, char **argv) 2265 { 2266 int ret; 2267 int c; 2268 boolean_t force = B_FALSE; 2269 rollback_cbdata_t cb = { 0 }; 2270 zfs_handle_t *zhp, *snap; 2271 char parentname[ZFS_MAXNAMELEN]; 2272 char *delim; 2273 2274 /* check options */ 2275 while ((c = getopt(argc, argv, "rRf")) != -1) { 2276 switch (c) { 2277 case 'r': 2278 cb.cb_recurse = 1; 2279 break; 2280 case 'R': 2281 cb.cb_recurse = 1; 2282 cb.cb_doclones = 1; 2283 break; 2284 case 'f': 2285 force = B_TRUE; 2286 break; 2287 case '?': 2288 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2289 optopt); 2290 usage(B_FALSE); 2291 } 2292 } 2293 2294 argc -= optind; 2295 argv += optind; 2296 2297 /* check number of arguments */ 2298 if (argc < 1) { 2299 (void) fprintf(stderr, gettext("missing dataset argument\n")); 2300 usage(B_FALSE); 2301 } 2302 if (argc > 1) { 2303 (void) fprintf(stderr, gettext("too many arguments\n")); 2304 usage(B_FALSE); 2305 } 2306 2307 /* open the snapshot */ 2308 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 2309 return (1); 2310 2311 /* open the parent dataset */ 2312 (void) strlcpy(parentname, argv[0], sizeof (parentname)); 2313 verify((delim = strrchr(parentname, '@')) != NULL); 2314 *delim = '\0'; 2315 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) { 2316 zfs_close(snap); 2317 return (1); 2318 } 2319 2320 /* 2321 * Check for more recent snapshots and/or clones based on the presence 2322 * of '-r' and '-R'. 2323 */ 2324 cb.cb_target = argv[0]; 2325 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 2326 cb.cb_first = B_TRUE; 2327 cb.cb_error = 0; 2328 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0) 2329 goto out; 2330 2331 if ((ret = cb.cb_error) != 0) 2332 goto out; 2333 2334 /* 2335 * Rollback parent to the given snapshot. 2336 */ 2337 ret = zfs_rollback(zhp, snap, force); 2338 2339 out: 2340 zfs_close(snap); 2341 zfs_close(zhp); 2342 2343 if (ret == 0) 2344 return (0); 2345 else 2346 return (1); 2347 } 2348 2349 /* 2350 * zfs set property=value { fs | snap | vol } ... 2351 * 2352 * Sets the given property for all datasets specified on the command line. 2353 */ 2354 typedef struct set_cbdata { 2355 char *cb_propname; 2356 char *cb_value; 2357 } set_cbdata_t; 2358 2359 static int 2360 set_callback(zfs_handle_t *zhp, void *data) 2361 { 2362 set_cbdata_t *cbp = data; 2363 2364 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) { 2365 switch (libzfs_errno(g_zfs)) { 2366 case EZFS_MOUNTFAILED: 2367 (void) fprintf(stderr, gettext("property may be set " 2368 "but unable to remount filesystem\n")); 2369 break; 2370 case EZFS_SHARENFSFAILED: 2371 (void) fprintf(stderr, gettext("property may be set " 2372 "but unable to reshare filesystem\n")); 2373 break; 2374 } 2375 return (1); 2376 } 2377 return (0); 2378 } 2379 2380 static int 2381 zfs_do_set(int argc, char **argv) 2382 { 2383 set_cbdata_t cb; 2384 int ret; 2385 2386 /* check for options */ 2387 if (argc > 1 && argv[1][0] == '-') { 2388 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2389 argv[1][1]); 2390 usage(B_FALSE); 2391 } 2392 2393 /* check number of arguments */ 2394 if (argc < 2) { 2395 (void) fprintf(stderr, gettext("missing property=value " 2396 "argument\n")); 2397 usage(B_FALSE); 2398 } 2399 if (argc < 3) { 2400 (void) fprintf(stderr, gettext("missing dataset name\n")); 2401 usage(B_FALSE); 2402 } 2403 2404 /* validate property=value argument */ 2405 cb.cb_propname = argv[1]; 2406 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) || 2407 (cb.cb_value[1] == '\0')) { 2408 (void) fprintf(stderr, gettext("missing value in " 2409 "property=value argument\n")); 2410 usage(B_FALSE); 2411 } 2412 2413 *cb.cb_value = '\0'; 2414 cb.cb_value++; 2415 2416 if (*cb.cb_propname == '\0') { 2417 (void) fprintf(stderr, 2418 gettext("missing property in property=value argument\n")); 2419 usage(B_FALSE); 2420 } 2421 2422 ret = zfs_for_each(argc - 2, argv + 2, NULL, 2423 ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, &cb); 2424 2425 return (ret); 2426 } 2427 2428 /* 2429 * zfs snapshot [-r] [-o prop=value] ... <fs@snap> 2430 * 2431 * Creates a snapshot with the given name. While functionally equivalent to 2432 * 'zfs create', it is a separate command to differentiate intent. 2433 */ 2434 static int 2435 zfs_do_snapshot(int argc, char **argv) 2436 { 2437 boolean_t recursive = B_FALSE; 2438 int ret; 2439 char c; 2440 nvlist_t *props; 2441 2442 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 2443 (void) fprintf(stderr, gettext("internal error: " 2444 "out of memory\n")); 2445 return (1); 2446 } 2447 2448 /* check options */ 2449 while ((c = getopt(argc, argv, "ro:")) != -1) { 2450 switch (c) { 2451 case 'o': 2452 if (parseprop(props)) 2453 return (1); 2454 break; 2455 case 'r': 2456 recursive = B_TRUE; 2457 break; 2458 case '?': 2459 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2460 optopt); 2461 goto usage; 2462 } 2463 } 2464 2465 argc -= optind; 2466 argv += optind; 2467 2468 /* check number of arguments */ 2469 if (argc < 1) { 2470 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2471 goto usage; 2472 } 2473 if (argc > 1) { 2474 (void) fprintf(stderr, gettext("too many arguments\n")); 2475 goto usage; 2476 } 2477 2478 ret = zfs_snapshot(g_zfs, argv[0], recursive, props); 2479 nvlist_free(props); 2480 if (ret && recursive) 2481 (void) fprintf(stderr, gettext("no snapshots were created\n")); 2482 return (ret != 0); 2483 2484 usage: 2485 nvlist_free(props); 2486 usage(B_FALSE); 2487 return (-1); 2488 } 2489 2490 /* 2491 * zfs send [-v] -R [-i|-I <@snap>] <fs@snap> 2492 * zfs send [-v] [-i|-I <@snap>] <fs@snap> 2493 * 2494 * Send a backup stream to stdout. 2495 */ 2496 static int 2497 zfs_do_send(int argc, char **argv) 2498 { 2499 char *fromname = NULL; 2500 char *toname = NULL; 2501 char *cp; 2502 zfs_handle_t *zhp; 2503 boolean_t doall = B_FALSE; 2504 boolean_t replicate = B_FALSE; 2505 boolean_t fromorigin = B_FALSE; 2506 boolean_t verbose = B_FALSE; 2507 int c, err; 2508 2509 /* check options */ 2510 while ((c = getopt(argc, argv, ":i:I:Rv")) != -1) { 2511 switch (c) { 2512 case 'i': 2513 if (fromname) 2514 usage(B_FALSE); 2515 fromname = optarg; 2516 break; 2517 case 'I': 2518 if (fromname) 2519 usage(B_FALSE); 2520 fromname = optarg; 2521 doall = B_TRUE; 2522 break; 2523 case 'R': 2524 replicate = B_TRUE; 2525 break; 2526 case 'v': 2527 verbose = B_TRUE; 2528 break; 2529 case ':': 2530 (void) fprintf(stderr, gettext("missing argument for " 2531 "'%c' option\n"), optopt); 2532 usage(B_FALSE); 2533 break; 2534 case '?': 2535 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2536 optopt); 2537 usage(B_FALSE); 2538 } 2539 } 2540 2541 argc -= optind; 2542 argv += optind; 2543 2544 /* check number of arguments */ 2545 if (argc < 1) { 2546 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2547 usage(B_FALSE); 2548 } 2549 if (argc > 1) { 2550 (void) fprintf(stderr, gettext("too many arguments\n")); 2551 usage(B_FALSE); 2552 } 2553 2554 if (isatty(STDOUT_FILENO)) { 2555 (void) fprintf(stderr, 2556 gettext("Error: Stream can not be written to a terminal.\n" 2557 "You must redirect standard output.\n")); 2558 return (1); 2559 } 2560 2561 cp = strchr(argv[0], '@'); 2562 if (cp == NULL) { 2563 (void) fprintf(stderr, 2564 gettext("argument must be a snapshot\n")); 2565 usage(B_FALSE); 2566 } 2567 *cp = '\0'; 2568 toname = cp + 1; 2569 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2570 if (zhp == NULL) 2571 return (1); 2572 2573 /* 2574 * If they specified the full path to the snapshot, chop off 2575 * everything except the short name of the snapshot, but special 2576 * case if they specify the origin. 2577 */ 2578 if (fromname && (cp = strchr(fromname, '@')) != NULL) { 2579 char origin[ZFS_MAXNAMELEN]; 2580 zprop_source_t src; 2581 2582 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN, 2583 origin, sizeof (origin), &src, NULL, 0, B_FALSE); 2584 2585 if (strcmp(origin, fromname) == 0) { 2586 fromname = NULL; 2587 fromorigin = B_TRUE; 2588 } else { 2589 *cp = '\0'; 2590 if (cp != fromname && strcmp(argv[0], fromname)) { 2591 (void) fprintf(stderr, 2592 gettext("incremental source must be " 2593 "in same filesystem\n")); 2594 usage(B_FALSE); 2595 } 2596 fromname = cp + 1; 2597 if (strchr(fromname, '@') || strchr(fromname, '/')) { 2598 (void) fprintf(stderr, 2599 gettext("invalid incremental source\n")); 2600 usage(B_FALSE); 2601 } 2602 } 2603 } 2604 2605 if (replicate && fromname == NULL) 2606 doall = B_TRUE; 2607 2608 err = zfs_send(zhp, fromname, toname, replicate, doall, fromorigin, 2609 verbose, STDOUT_FILENO); 2610 zfs_close(zhp); 2611 2612 return (err != 0); 2613 } 2614 2615 /* 2616 * zfs receive [-dnvF] <fs@snap> 2617 * 2618 * Restore a backup stream from stdin. 2619 */ 2620 static int 2621 zfs_do_receive(int argc, char **argv) 2622 { 2623 int c, err; 2624 recvflags_t flags; 2625 2626 bzero(&flags, sizeof (recvflags_t)); 2627 /* check options */ 2628 while ((c = getopt(argc, argv, ":dnuvF")) != -1) { 2629 switch (c) { 2630 case 'd': 2631 flags.isprefix = B_TRUE; 2632 break; 2633 case 'n': 2634 flags.dryrun = B_TRUE; 2635 break; 2636 case 'u': 2637 flags.nomount = B_TRUE; 2638 break; 2639 case 'v': 2640 flags.verbose = B_TRUE; 2641 break; 2642 case 'F': 2643 flags.force = B_TRUE; 2644 break; 2645 case ':': 2646 (void) fprintf(stderr, gettext("missing argument for " 2647 "'%c' option\n"), optopt); 2648 usage(B_FALSE); 2649 break; 2650 case '?': 2651 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2652 optopt); 2653 usage(B_FALSE); 2654 } 2655 } 2656 2657 argc -= optind; 2658 argv += optind; 2659 2660 /* check number of arguments */ 2661 if (argc < 1) { 2662 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2663 usage(B_FALSE); 2664 } 2665 if (argc > 1) { 2666 (void) fprintf(stderr, gettext("too many arguments\n")); 2667 usage(B_FALSE); 2668 } 2669 2670 if (isatty(STDIN_FILENO)) { 2671 (void) fprintf(stderr, 2672 gettext("Error: Backup stream can not be read " 2673 "from a terminal.\n" 2674 "You must redirect standard input.\n")); 2675 return (1); 2676 } 2677 2678 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL); 2679 2680 return (err != 0); 2681 } 2682 2683 static int 2684 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding) 2685 { 2686 int errors = 0; 2687 int i; 2688 const char *tag; 2689 boolean_t recursive = B_FALSE; 2690 boolean_t temphold = B_FALSE; 2691 const char *opts = holding ? "rt" : "r"; 2692 int c; 2693 2694 /* check options */ 2695 while ((c = getopt(argc, argv, opts)) != -1) { 2696 switch (c) { 2697 case 'r': 2698 recursive = B_TRUE; 2699 break; 2700 case 't': 2701 temphold = B_TRUE; 2702 break; 2703 case '?': 2704 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2705 optopt); 2706 usage(B_FALSE); 2707 } 2708 } 2709 2710 argc -= optind; 2711 argv += optind; 2712 2713 /* check number of arguments */ 2714 if (argc < 2) 2715 usage(B_FALSE); 2716 2717 tag = argv[0]; 2718 --argc; 2719 ++argv; 2720 2721 if (holding && tag[0] == '.') { 2722 /* tags starting with '.' are reserved for libzfs */ 2723 (void) fprintf(stderr, gettext("tag may not start with '.'\n")); 2724 usage(B_FALSE); 2725 } 2726 2727 for (i = 0; i < argc; ++i) { 2728 zfs_handle_t *zhp; 2729 char parent[ZFS_MAXNAMELEN]; 2730 const char *delim; 2731 char *path = argv[i]; 2732 2733 delim = strchr(path, '@'); 2734 if (delim == NULL) { 2735 (void) fprintf(stderr, 2736 gettext("'%s' is not a snapshot\n"), path); 2737 ++errors; 2738 continue; 2739 } 2740 (void) strncpy(parent, path, delim - path); 2741 parent[delim - path] = '\0'; 2742 2743 zhp = zfs_open(g_zfs, parent, 2744 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2745 if (zhp == NULL) { 2746 ++errors; 2747 continue; 2748 } 2749 if (holding) { 2750 if (zfs_hold(zhp, delim+1, tag, recursive, 2751 temphold) != 0) 2752 ++errors; 2753 } else { 2754 if (zfs_release(zhp, delim+1, tag, recursive) != 0) 2755 ++errors; 2756 } 2757 zfs_close(zhp); 2758 } 2759 2760 return (errors != 0); 2761 } 2762 2763 /* 2764 * zfs hold [-r] [-t] <tag> <snap> ... 2765 * 2766 * -r Recursively hold 2767 * -t Temporary hold (hidden option) 2768 * 2769 * Apply a user-hold with the given tag to the list of snapshots. 2770 */ 2771 static int 2772 zfs_do_hold(int argc, char **argv) 2773 { 2774 return (zfs_do_hold_rele_impl(argc, argv, B_TRUE)); 2775 } 2776 2777 /* 2778 * zfs release [-r] <tag> <snap> ... 2779 * 2780 * -r Recursively release 2781 * 2782 * Release a user-hold with the given tag from the list of snapshots. 2783 */ 2784 static int 2785 zfs_do_release(int argc, char **argv) 2786 { 2787 return (zfs_do_hold_rele_impl(argc, argv, B_FALSE)); 2788 } 2789 2790 typedef struct get_all_cbdata { 2791 zfs_handle_t **cb_handles; 2792 size_t cb_alloc; 2793 size_t cb_used; 2794 uint_t cb_types; 2795 boolean_t cb_verbose; 2796 } get_all_cbdata_t; 2797 2798 #define CHECK_SPINNER 30 2799 #define SPINNER_TIME 3 /* seconds */ 2800 #define MOUNT_TIME 5 /* seconds */ 2801 2802 static int 2803 get_one_dataset(zfs_handle_t *zhp, void *data) 2804 { 2805 static char spin[] = { '-', '\\', '|', '/' }; 2806 static int spinval = 0; 2807 static int spincheck = 0; 2808 static time_t last_spin_time = (time_t)0; 2809 get_all_cbdata_t *cbp = data; 2810 zfs_type_t type = zfs_get_type(zhp); 2811 2812 if (cbp->cb_verbose) { 2813 if (--spincheck < 0) { 2814 time_t now = time(NULL); 2815 if (last_spin_time + SPINNER_TIME < now) { 2816 (void) printf("\b%c", spin[spinval++ % 4]); 2817 (void) fflush(stdout); 2818 last_spin_time = now; 2819 } 2820 spincheck = CHECK_SPINNER; 2821 } 2822 } 2823 2824 /* 2825 * Interate over any nested datasets. 2826 */ 2827 if (type == ZFS_TYPE_FILESYSTEM && 2828 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) { 2829 zfs_close(zhp); 2830 return (1); 2831 } 2832 2833 /* 2834 * Skip any datasets whose type does not match. 2835 */ 2836 if ((type & cbp->cb_types) == 0) { 2837 zfs_close(zhp); 2838 return (0); 2839 } 2840 2841 if (cbp->cb_alloc == cbp->cb_used) { 2842 zfs_handle_t **handles; 2843 2844 if (cbp->cb_alloc == 0) 2845 cbp->cb_alloc = 64; 2846 else 2847 cbp->cb_alloc *= 2; 2848 2849 handles = safe_malloc(cbp->cb_alloc * sizeof (void *)); 2850 2851 if (cbp->cb_handles) { 2852 bcopy(cbp->cb_handles, handles, 2853 cbp->cb_used * sizeof (void *)); 2854 free(cbp->cb_handles); 2855 } 2856 2857 cbp->cb_handles = handles; 2858 } 2859 2860 cbp->cb_handles[cbp->cb_used++] = zhp; 2861 2862 return (0); 2863 } 2864 2865 static void 2866 get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count, 2867 boolean_t verbose) 2868 { 2869 get_all_cbdata_t cb = { 0 }; 2870 cb.cb_types = types; 2871 cb.cb_verbose = verbose; 2872 2873 if (verbose) { 2874 (void) printf("%s: *", gettext("Reading ZFS config")); 2875 (void) fflush(stdout); 2876 } 2877 2878 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb); 2879 2880 *dslist = cb.cb_handles; 2881 *count = cb.cb_used; 2882 2883 if (verbose) { 2884 (void) printf("\b%s\n", gettext("done.")); 2885 } 2886 } 2887 2888 static int 2889 dataset_cmp(const void *a, const void *b) 2890 { 2891 zfs_handle_t **za = (zfs_handle_t **)a; 2892 zfs_handle_t **zb = (zfs_handle_t **)b; 2893 char mounta[MAXPATHLEN]; 2894 char mountb[MAXPATHLEN]; 2895 boolean_t gota, gotb; 2896 2897 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0) 2898 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta, 2899 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0); 2900 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0) 2901 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb, 2902 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0); 2903 2904 if (gota && gotb) 2905 return (strcmp(mounta, mountb)); 2906 2907 if (gota) 2908 return (-1); 2909 if (gotb) 2910 return (1); 2911 2912 return (strcmp(zfs_get_name(a), zfs_get_name(b))); 2913 } 2914 2915 /* 2916 * Generic callback for sharing or mounting filesystems. Because the code is so 2917 * similar, we have a common function with an extra parameter to determine which 2918 * mode we are using. 2919 */ 2920 #define OP_SHARE 0x1 2921 #define OP_MOUNT 0x2 2922 2923 /* 2924 * Share or mount a dataset. 2925 */ 2926 static int 2927 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol, 2928 boolean_t explicit, const char *options) 2929 { 2930 char mountpoint[ZFS_MAXPROPLEN]; 2931 char shareopts[ZFS_MAXPROPLEN]; 2932 char smbshareopts[ZFS_MAXPROPLEN]; 2933 const char *cmdname = op == OP_SHARE ? "share" : "mount"; 2934 struct mnttab mnt; 2935 uint64_t zoned, canmount; 2936 zfs_type_t type = zfs_get_type(zhp); 2937 boolean_t shared_nfs, shared_smb; 2938 2939 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)); 2940 2941 if (type == ZFS_TYPE_FILESYSTEM) { 2942 /* 2943 * Check to make sure we can mount/share this dataset. If we 2944 * are in the global zone and the filesystem is exported to a 2945 * local zone, or if we are in a local zone and the 2946 * filesystem is not exported, then it is an error. 2947 */ 2948 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 2949 2950 if (zoned && getzoneid() == GLOBAL_ZONEID) { 2951 if (!explicit) 2952 return (0); 2953 2954 (void) fprintf(stderr, gettext("cannot %s '%s': " 2955 "dataset is exported to a local zone\n"), cmdname, 2956 zfs_get_name(zhp)); 2957 return (1); 2958 2959 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) { 2960 if (!explicit) 2961 return (0); 2962 2963 (void) fprintf(stderr, gettext("cannot %s '%s': " 2964 "permission denied\n"), cmdname, 2965 zfs_get_name(zhp)); 2966 return (1); 2967 } 2968 2969 /* 2970 * Ignore any filesystems which don't apply to us. This 2971 * includes those with a legacy mountpoint, or those with 2972 * legacy share options. 2973 */ 2974 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 2975 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0); 2976 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts, 2977 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 2978 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts, 2979 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0); 2980 2981 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 && 2982 strcmp(smbshareopts, "off") == 0) { 2983 if (!explicit) 2984 return (0); 2985 2986 (void) fprintf(stderr, gettext("cannot share '%s': " 2987 "legacy share\n"), zfs_get_name(zhp)); 2988 (void) fprintf(stderr, gettext("use share(1M) to " 2989 "share this filesystem, or set " 2990 "sharenfs property on\n")); 2991 return (1); 2992 } 2993 2994 /* 2995 * We cannot share or mount legacy filesystems. If the 2996 * shareopts is non-legacy but the mountpoint is legacy, we 2997 * treat it as a legacy share. 2998 */ 2999 if (strcmp(mountpoint, "legacy") == 0) { 3000 if (!explicit) 3001 return (0); 3002 3003 (void) fprintf(stderr, gettext("cannot %s '%s': " 3004 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp)); 3005 (void) fprintf(stderr, gettext("use %s(1M) to " 3006 "%s this filesystem\n"), cmdname, cmdname); 3007 return (1); 3008 } 3009 3010 if (strcmp(mountpoint, "none") == 0) { 3011 if (!explicit) 3012 return (0); 3013 3014 (void) fprintf(stderr, gettext("cannot %s '%s': no " 3015 "mountpoint set\n"), cmdname, zfs_get_name(zhp)); 3016 return (1); 3017 } 3018 3019 /* 3020 * canmount explicit outcome 3021 * on no pass through 3022 * on yes pass through 3023 * off no return 0 3024 * off yes display error, return 1 3025 * noauto no return 0 3026 * noauto yes pass through 3027 */ 3028 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 3029 if (canmount == ZFS_CANMOUNT_OFF) { 3030 if (!explicit) 3031 return (0); 3032 3033 (void) fprintf(stderr, gettext("cannot %s '%s': " 3034 "'canmount' property is set to 'off'\n"), cmdname, 3035 zfs_get_name(zhp)); 3036 return (1); 3037 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) { 3038 return (0); 3039 } 3040 3041 /* 3042 * At this point, we have verified that the mountpoint and/or 3043 * shareopts are appropriate for auto management. If the 3044 * filesystem is already mounted or shared, return (failing 3045 * for explicit requests); otherwise mount or share the 3046 * filesystem. 3047 */ 3048 switch (op) { 3049 case OP_SHARE: 3050 3051 shared_nfs = zfs_is_shared_nfs(zhp, NULL); 3052 shared_smb = zfs_is_shared_smb(zhp, NULL); 3053 3054 if (shared_nfs && shared_smb || 3055 (shared_nfs && strcmp(shareopts, "on") == 0 && 3056 strcmp(smbshareopts, "off") == 0) || 3057 (shared_smb && strcmp(smbshareopts, "on") == 0 && 3058 strcmp(shareopts, "off") == 0)) { 3059 if (!explicit) 3060 return (0); 3061 3062 (void) fprintf(stderr, gettext("cannot share " 3063 "'%s': filesystem already shared\n"), 3064 zfs_get_name(zhp)); 3065 return (1); 3066 } 3067 3068 if (!zfs_is_mounted(zhp, NULL) && 3069 zfs_mount(zhp, NULL, 0) != 0) 3070 return (1); 3071 3072 if (protocol == NULL) { 3073 if (zfs_shareall(zhp) != 0) 3074 return (1); 3075 } else if (strcmp(protocol, "nfs") == 0) { 3076 if (zfs_share_nfs(zhp)) 3077 return (1); 3078 } else if (strcmp(protocol, "smb") == 0) { 3079 if (zfs_share_smb(zhp)) 3080 return (1); 3081 } else { 3082 (void) fprintf(stderr, gettext("cannot share " 3083 "'%s': invalid share type '%s' " 3084 "specified\n"), 3085 zfs_get_name(zhp), protocol); 3086 return (1); 3087 } 3088 3089 break; 3090 3091 case OP_MOUNT: 3092 if (options == NULL) 3093 mnt.mnt_mntopts = ""; 3094 else 3095 mnt.mnt_mntopts = (char *)options; 3096 3097 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) && 3098 zfs_is_mounted(zhp, NULL)) { 3099 if (!explicit) 3100 return (0); 3101 3102 (void) fprintf(stderr, gettext("cannot mount " 3103 "'%s': filesystem already mounted\n"), 3104 zfs_get_name(zhp)); 3105 return (1); 3106 } 3107 3108 if (zfs_mount(zhp, options, flags) != 0) 3109 return (1); 3110 break; 3111 } 3112 } else { 3113 assert(op == OP_SHARE); 3114 3115 /* 3116 * Ignore any volumes that aren't shared. 3117 */ 3118 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts, 3119 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3120 3121 if (strcmp(shareopts, "off") == 0) { 3122 if (!explicit) 3123 return (0); 3124 3125 (void) fprintf(stderr, gettext("cannot share '%s': " 3126 "'shareiscsi' property not set\n"), 3127 zfs_get_name(zhp)); 3128 (void) fprintf(stderr, gettext("set 'shareiscsi' " 3129 "property or use iscsitadm(1M) to share this " 3130 "volume\n")); 3131 return (1); 3132 } 3133 3134 if (zfs_is_shared_iscsi(zhp)) { 3135 if (!explicit) 3136 return (0); 3137 3138 (void) fprintf(stderr, gettext("cannot share " 3139 "'%s': volume already shared\n"), 3140 zfs_get_name(zhp)); 3141 return (1); 3142 } 3143 3144 if (zfs_share_iscsi(zhp) != 0) 3145 return (1); 3146 } 3147 3148 return (0); 3149 } 3150 3151 /* 3152 * Reports progress in the form "(current/total)". Not thread-safe. 3153 */ 3154 static void 3155 report_mount_progress(int current, int total) 3156 { 3157 static int len; 3158 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b" 3159 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"; 3160 static time_t last_progress_time; 3161 time_t now = time(NULL); 3162 3163 /* report 1..n instead of 0..n-1 */ 3164 ++current; 3165 3166 /* display header if we're here for the first time */ 3167 if (current == 1) { 3168 (void) printf(gettext("Mounting ZFS filesystems: ")); 3169 len = 0; 3170 } else if (current != total && last_progress_time + MOUNT_TIME >= now) { 3171 /* too soon to report again */ 3172 return; 3173 } 3174 3175 last_progress_time = now; 3176 3177 /* back up to prepare for overwriting */ 3178 if (len) 3179 (void) printf("%*.*s", len, len, reverse); 3180 3181 /* We put a newline at the end if this is the last one. */ 3182 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : ""); 3183 (void) fflush(stdout); 3184 } 3185 3186 static void 3187 append_options(char *mntopts, char *newopts) 3188 { 3189 int len = strlen(mntopts); 3190 3191 /* original length plus new string to append plus 1 for the comma */ 3192 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) { 3193 (void) fprintf(stderr, gettext("the opts argument for " 3194 "'%c' option is too long (more than %d chars)\n"), 3195 "-o", MNT_LINE_MAX); 3196 usage(B_FALSE); 3197 } 3198 3199 if (*mntopts) 3200 mntopts[len++] = ','; 3201 3202 (void) strcpy(&mntopts[len], newopts); 3203 } 3204 3205 static int 3206 share_mount(int op, int argc, char **argv) 3207 { 3208 int do_all = 0; 3209 boolean_t verbose = B_FALSE; 3210 int c, ret = 0; 3211 char *options = NULL; 3212 int types, flags = 0; 3213 3214 /* check options */ 3215 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a")) 3216 != -1) { 3217 switch (c) { 3218 case 'a': 3219 do_all = 1; 3220 break; 3221 case 'v': 3222 verbose = B_TRUE; 3223 break; 3224 case 'o': 3225 if (*optarg == '\0') { 3226 (void) fprintf(stderr, gettext("empty mount " 3227 "options (-o) specified\n")); 3228 usage(B_FALSE); 3229 } 3230 3231 if (options == NULL) 3232 options = safe_malloc(MNT_LINE_MAX + 1); 3233 3234 /* option validation is done later */ 3235 append_options(options, optarg); 3236 break; 3237 3238 case 'O': 3239 flags |= MS_OVERLAY; 3240 break; 3241 case ':': 3242 (void) fprintf(stderr, gettext("missing argument for " 3243 "'%c' option\n"), optopt); 3244 usage(B_FALSE); 3245 break; 3246 case '?': 3247 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3248 optopt); 3249 usage(B_FALSE); 3250 } 3251 } 3252 3253 argc -= optind; 3254 argv += optind; 3255 3256 /* check number of arguments */ 3257 if (do_all) { 3258 zfs_handle_t **dslist = NULL; 3259 size_t i, count = 0; 3260 char *protocol = NULL; 3261 3262 if (op == OP_MOUNT) { 3263 types = ZFS_TYPE_FILESYSTEM; 3264 } else if (argc > 0) { 3265 if (strcmp(argv[0], "nfs") == 0 || 3266 strcmp(argv[0], "smb") == 0) { 3267 types = ZFS_TYPE_FILESYSTEM; 3268 } else if (strcmp(argv[0], "iscsi") == 0) { 3269 types = ZFS_TYPE_VOLUME; 3270 } else { 3271 (void) fprintf(stderr, gettext("share type " 3272 "must be 'nfs', 'smb' or 'iscsi'\n")); 3273 usage(B_FALSE); 3274 } 3275 protocol = argv[0]; 3276 argc--; 3277 argv++; 3278 } else { 3279 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME; 3280 } 3281 3282 if (argc != 0) { 3283 (void) fprintf(stderr, gettext("too many arguments\n")); 3284 usage(B_FALSE); 3285 } 3286 3287 get_all_datasets(types, &dslist, &count, verbose); 3288 3289 if (count == 0) 3290 return (0); 3291 3292 qsort(dslist, count, sizeof (void *), dataset_cmp); 3293 3294 for (i = 0; i < count; i++) { 3295 if (verbose) 3296 report_mount_progress(i, count); 3297 3298 if (share_mount_one(dslist[i], op, flags, protocol, 3299 B_FALSE, options) != 0) 3300 ret = 1; 3301 zfs_close(dslist[i]); 3302 } 3303 3304 free(dslist); 3305 } else if (argc == 0) { 3306 struct mnttab entry; 3307 3308 if ((op == OP_SHARE) || (options != NULL)) { 3309 (void) fprintf(stderr, gettext("missing filesystem " 3310 "argument (specify -a for all)\n")); 3311 usage(B_FALSE); 3312 } 3313 3314 /* 3315 * When mount is given no arguments, go through /etc/mnttab and 3316 * display any active ZFS mounts. We hide any snapshots, since 3317 * they are controlled automatically. 3318 */ 3319 rewind(mnttab_file); 3320 while (getmntent(mnttab_file, &entry) == 0) { 3321 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 || 3322 strchr(entry.mnt_special, '@') != NULL) 3323 continue; 3324 3325 (void) printf("%-30s %s\n", entry.mnt_special, 3326 entry.mnt_mountp); 3327 } 3328 3329 } else { 3330 zfs_handle_t *zhp; 3331 3332 types = ZFS_TYPE_FILESYSTEM; 3333 if (op == OP_SHARE) 3334 types |= ZFS_TYPE_VOLUME; 3335 3336 if (argc > 1) { 3337 (void) fprintf(stderr, 3338 gettext("too many arguments\n")); 3339 usage(B_FALSE); 3340 } 3341 3342 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) { 3343 ret = 1; 3344 } else { 3345 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE, 3346 options); 3347 zfs_close(zhp); 3348 } 3349 } 3350 3351 return (ret); 3352 } 3353 3354 /* 3355 * zfs mount -a [nfs | iscsi] 3356 * zfs mount filesystem 3357 * 3358 * Mount all filesystems, or mount the given filesystem. 3359 */ 3360 static int 3361 zfs_do_mount(int argc, char **argv) 3362 { 3363 return (share_mount(OP_MOUNT, argc, argv)); 3364 } 3365 3366 /* 3367 * zfs share -a [nfs | iscsi | smb] 3368 * zfs share filesystem 3369 * 3370 * Share all filesystems, or share the given filesystem. 3371 */ 3372 static int 3373 zfs_do_share(int argc, char **argv) 3374 { 3375 return (share_mount(OP_SHARE, argc, argv)); 3376 } 3377 3378 typedef struct unshare_unmount_node { 3379 zfs_handle_t *un_zhp; 3380 char *un_mountp; 3381 uu_avl_node_t un_avlnode; 3382 } unshare_unmount_node_t; 3383 3384 /* ARGSUSED */ 3385 static int 3386 unshare_unmount_compare(const void *larg, const void *rarg, void *unused) 3387 { 3388 const unshare_unmount_node_t *l = larg; 3389 const unshare_unmount_node_t *r = rarg; 3390 3391 return (strcmp(l->un_mountp, r->un_mountp)); 3392 } 3393 3394 /* 3395 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an 3396 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem, 3397 * and unmount it appropriately. 3398 */ 3399 static int 3400 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual) 3401 { 3402 zfs_handle_t *zhp; 3403 int ret; 3404 struct stat64 statbuf; 3405 struct extmnttab entry; 3406 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount"; 3407 ino_t path_inode; 3408 3409 /* 3410 * Search for the path in /etc/mnttab. Rather than looking for the 3411 * specific path, which can be fooled by non-standard paths (i.e. ".." 3412 * or "//"), we stat() the path and search for the corresponding 3413 * (major,minor) device pair. 3414 */ 3415 if (stat64(path, &statbuf) != 0) { 3416 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3417 cmdname, path, strerror(errno)); 3418 return (1); 3419 } 3420 path_inode = statbuf.st_ino; 3421 3422 /* 3423 * Search for the given (major,minor) pair in the mount table. 3424 */ 3425 rewind(mnttab_file); 3426 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) { 3427 if (entry.mnt_major == major(statbuf.st_dev) && 3428 entry.mnt_minor == minor(statbuf.st_dev)) 3429 break; 3430 } 3431 if (ret != 0) { 3432 if (op == OP_SHARE) { 3433 (void) fprintf(stderr, gettext("cannot %s '%s': not " 3434 "currently mounted\n"), cmdname, path); 3435 return (1); 3436 } 3437 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"), 3438 path); 3439 if ((ret = umount2(path, flags)) != 0) 3440 (void) fprintf(stderr, gettext("%s: %s\n"), path, 3441 strerror(errno)); 3442 return (ret != 0); 3443 } 3444 3445 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) { 3446 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS " 3447 "filesystem\n"), cmdname, path); 3448 return (1); 3449 } 3450 3451 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3452 ZFS_TYPE_FILESYSTEM)) == NULL) 3453 return (1); 3454 3455 ret = 1; 3456 if (stat64(entry.mnt_mountp, &statbuf) != 0) { 3457 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3458 cmdname, path, strerror(errno)); 3459 goto out; 3460 } else if (statbuf.st_ino != path_inode) { 3461 (void) fprintf(stderr, gettext("cannot " 3462 "%s '%s': not a mountpoint\n"), cmdname, path); 3463 goto out; 3464 } 3465 3466 if (op == OP_SHARE) { 3467 char nfs_mnt_prop[ZFS_MAXPROPLEN]; 3468 char smbshare_prop[ZFS_MAXPROPLEN]; 3469 3470 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop, 3471 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0); 3472 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop, 3473 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0); 3474 3475 if (strcmp(nfs_mnt_prop, "off") == 0 && 3476 strcmp(smbshare_prop, "off") == 0) { 3477 (void) fprintf(stderr, gettext("cannot unshare " 3478 "'%s': legacy share\n"), path); 3479 (void) fprintf(stderr, gettext("use " 3480 "unshare(1M) to unshare this filesystem\n")); 3481 } else if (!zfs_is_shared(zhp)) { 3482 (void) fprintf(stderr, gettext("cannot unshare '%s': " 3483 "not currently shared\n"), path); 3484 } else { 3485 ret = zfs_unshareall_bypath(zhp, path); 3486 } 3487 } else { 3488 char mtpt_prop[ZFS_MAXPROPLEN]; 3489 3490 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop, 3491 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0); 3492 3493 if (is_manual) { 3494 ret = zfs_unmount(zhp, NULL, flags); 3495 } else if (strcmp(mtpt_prop, "legacy") == 0) { 3496 (void) fprintf(stderr, gettext("cannot unmount " 3497 "'%s': legacy mountpoint\n"), 3498 zfs_get_name(zhp)); 3499 (void) fprintf(stderr, gettext("use umount(1M) " 3500 "to unmount this filesystem\n")); 3501 } else { 3502 ret = zfs_unmountall(zhp, flags); 3503 } 3504 } 3505 3506 out: 3507 zfs_close(zhp); 3508 3509 return (ret != 0); 3510 } 3511 3512 /* 3513 * Generic callback for unsharing or unmounting a filesystem. 3514 */ 3515 static int 3516 unshare_unmount(int op, int argc, char **argv) 3517 { 3518 int do_all = 0; 3519 int flags = 0; 3520 int ret = 0; 3521 int types, c; 3522 zfs_handle_t *zhp; 3523 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN]; 3524 char sharesmb[ZFS_MAXPROPLEN]; 3525 3526 /* check options */ 3527 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) { 3528 switch (c) { 3529 case 'a': 3530 do_all = 1; 3531 break; 3532 case 'f': 3533 flags = MS_FORCE; 3534 break; 3535 case '?': 3536 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3537 optopt); 3538 usage(B_FALSE); 3539 } 3540 } 3541 3542 argc -= optind; 3543 argv += optind; 3544 3545 if (do_all) { 3546 /* 3547 * We could make use of zfs_for_each() to walk all datasets in 3548 * the system, but this would be very inefficient, especially 3549 * since we would have to linearly search /etc/mnttab for each 3550 * one. Instead, do one pass through /etc/mnttab looking for 3551 * zfs entries and call zfs_unmount() for each one. 3552 * 3553 * Things get a little tricky if the administrator has created 3554 * mountpoints beneath other ZFS filesystems. In this case, we 3555 * have to unmount the deepest filesystems first. To accomplish 3556 * this, we place all the mountpoints in an AVL tree sorted by 3557 * the special type (dataset name), and walk the result in 3558 * reverse to make sure to get any snapshots first. 3559 */ 3560 struct mnttab entry; 3561 uu_avl_pool_t *pool; 3562 uu_avl_t *tree; 3563 unshare_unmount_node_t *node; 3564 uu_avl_index_t idx; 3565 uu_avl_walk_t *walk; 3566 3567 if (argc != 0) { 3568 (void) fprintf(stderr, gettext("too many arguments\n")); 3569 usage(B_FALSE); 3570 } 3571 3572 if ((pool = uu_avl_pool_create("unmount_pool", 3573 sizeof (unshare_unmount_node_t), 3574 offsetof(unshare_unmount_node_t, un_avlnode), 3575 unshare_unmount_compare, 3576 UU_DEFAULT)) == NULL) { 3577 (void) fprintf(stderr, gettext("internal error: " 3578 "out of memory\n")); 3579 exit(1); 3580 } 3581 3582 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) { 3583 (void) fprintf(stderr, gettext("internal error: " 3584 "out of memory\n")); 3585 exit(1); 3586 } 3587 3588 rewind(mnttab_file); 3589 while (getmntent(mnttab_file, &entry) == 0) { 3590 3591 /* ignore non-ZFS entries */ 3592 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 3593 continue; 3594 3595 /* ignore snapshots */ 3596 if (strchr(entry.mnt_special, '@') != NULL) 3597 continue; 3598 3599 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3600 ZFS_TYPE_FILESYSTEM)) == NULL) { 3601 ret = 1; 3602 continue; 3603 } 3604 3605 switch (op) { 3606 case OP_SHARE: 3607 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3608 nfsiscsi_mnt_prop, 3609 sizeof (nfsiscsi_mnt_prop), 3610 NULL, NULL, 0, B_FALSE) == 0); 3611 if (strcmp(nfsiscsi_mnt_prop, "off") != 0) 3612 break; 3613 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3614 nfsiscsi_mnt_prop, 3615 sizeof (nfsiscsi_mnt_prop), 3616 NULL, NULL, 0, B_FALSE) == 0); 3617 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) 3618 continue; 3619 break; 3620 case OP_MOUNT: 3621 /* Ignore legacy mounts */ 3622 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, 3623 nfsiscsi_mnt_prop, 3624 sizeof (nfsiscsi_mnt_prop), 3625 NULL, NULL, 0, B_FALSE) == 0); 3626 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) 3627 continue; 3628 /* Ignore canmount=noauto mounts */ 3629 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == 3630 ZFS_CANMOUNT_NOAUTO) 3631 continue; 3632 default: 3633 break; 3634 } 3635 3636 node = safe_malloc(sizeof (unshare_unmount_node_t)); 3637 node->un_zhp = zhp; 3638 3639 if ((node->un_mountp = strdup(entry.mnt_mountp)) == 3640 NULL) { 3641 (void) fprintf(stderr, gettext("internal error:" 3642 " out of memory\n")); 3643 exit(1); 3644 } 3645 3646 uu_avl_node_init(node, &node->un_avlnode, pool); 3647 3648 if (uu_avl_find(tree, node, NULL, &idx) == NULL) { 3649 uu_avl_insert(tree, node, idx); 3650 } else { 3651 zfs_close(node->un_zhp); 3652 free(node->un_mountp); 3653 free(node); 3654 } 3655 } 3656 3657 /* 3658 * Walk the AVL tree in reverse, unmounting each filesystem and 3659 * removing it from the AVL tree in the process. 3660 */ 3661 if ((walk = uu_avl_walk_start(tree, 3662 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) { 3663 (void) fprintf(stderr, 3664 gettext("internal error: out of memory")); 3665 exit(1); 3666 } 3667 3668 while ((node = uu_avl_walk_next(walk)) != NULL) { 3669 uu_avl_remove(tree, node); 3670 3671 switch (op) { 3672 case OP_SHARE: 3673 if (zfs_unshareall_bypath(node->un_zhp, 3674 node->un_mountp) != 0) 3675 ret = 1; 3676 break; 3677 3678 case OP_MOUNT: 3679 if (zfs_unmount(node->un_zhp, 3680 node->un_mountp, flags) != 0) 3681 ret = 1; 3682 break; 3683 } 3684 3685 zfs_close(node->un_zhp); 3686 free(node->un_mountp); 3687 free(node); 3688 } 3689 3690 uu_avl_walk_end(walk); 3691 uu_avl_destroy(tree); 3692 uu_avl_pool_destroy(pool); 3693 3694 if (op == OP_SHARE) { 3695 /* 3696 * Finally, unshare any volumes shared via iSCSI. 3697 */ 3698 zfs_handle_t **dslist = NULL; 3699 size_t i, count = 0; 3700 3701 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count, 3702 B_FALSE); 3703 3704 if (count != 0) { 3705 qsort(dslist, count, sizeof (void *), 3706 dataset_cmp); 3707 3708 for (i = 0; i < count; i++) { 3709 if (zfs_unshare_iscsi(dslist[i]) != 0) 3710 ret = 1; 3711 zfs_close(dslist[i]); 3712 } 3713 3714 free(dslist); 3715 } 3716 } 3717 } else { 3718 if (argc != 1) { 3719 if (argc == 0) 3720 (void) fprintf(stderr, 3721 gettext("missing filesystem argument\n")); 3722 else 3723 (void) fprintf(stderr, 3724 gettext("too many arguments\n")); 3725 usage(B_FALSE); 3726 } 3727 3728 /* 3729 * We have an argument, but it may be a full path or a ZFS 3730 * filesystem. Pass full paths off to unmount_path() (shared by 3731 * manual_unmount), otherwise open the filesystem and pass to 3732 * zfs_unmount(). 3733 */ 3734 if (argv[0][0] == '/') 3735 return (unshare_unmount_path(op, argv[0], 3736 flags, B_FALSE)); 3737 3738 types = ZFS_TYPE_FILESYSTEM; 3739 if (op == OP_SHARE) 3740 types |= ZFS_TYPE_VOLUME; 3741 3742 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) 3743 return (1); 3744 3745 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 3746 verify(zfs_prop_get(zhp, op == OP_SHARE ? 3747 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, 3748 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL, 3749 NULL, 0, B_FALSE) == 0); 3750 3751 switch (op) { 3752 case OP_SHARE: 3753 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3754 nfsiscsi_mnt_prop, 3755 sizeof (nfsiscsi_mnt_prop), 3756 NULL, NULL, 0, B_FALSE) == 0); 3757 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3758 sharesmb, sizeof (sharesmb), NULL, NULL, 3759 0, B_FALSE) == 0); 3760 3761 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 && 3762 strcmp(sharesmb, "off") == 0) { 3763 (void) fprintf(stderr, gettext("cannot " 3764 "unshare '%s': legacy share\n"), 3765 zfs_get_name(zhp)); 3766 (void) fprintf(stderr, gettext("use " 3767 "unshare(1M) to unshare this " 3768 "filesystem\n")); 3769 ret = 1; 3770 } else if (!zfs_is_shared(zhp)) { 3771 (void) fprintf(stderr, gettext("cannot " 3772 "unshare '%s': not currently " 3773 "shared\n"), zfs_get_name(zhp)); 3774 ret = 1; 3775 } else if (zfs_unshareall(zhp) != 0) { 3776 ret = 1; 3777 } 3778 break; 3779 3780 case OP_MOUNT: 3781 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) { 3782 (void) fprintf(stderr, gettext("cannot " 3783 "unmount '%s': legacy " 3784 "mountpoint\n"), zfs_get_name(zhp)); 3785 (void) fprintf(stderr, gettext("use " 3786 "umount(1M) to unmount this " 3787 "filesystem\n")); 3788 ret = 1; 3789 } else if (!zfs_is_mounted(zhp, NULL)) { 3790 (void) fprintf(stderr, gettext("cannot " 3791 "unmount '%s': not currently " 3792 "mounted\n"), 3793 zfs_get_name(zhp)); 3794 ret = 1; 3795 } else if (zfs_unmountall(zhp, flags) != 0) { 3796 ret = 1; 3797 } 3798 break; 3799 } 3800 } else { 3801 assert(op == OP_SHARE); 3802 3803 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, 3804 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), 3805 NULL, NULL, 0, B_FALSE) == 0); 3806 3807 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) { 3808 (void) fprintf(stderr, gettext("cannot unshare " 3809 "'%s': 'shareiscsi' property not set\n"), 3810 zfs_get_name(zhp)); 3811 (void) fprintf(stderr, gettext("set " 3812 "'shareiscsi' property or use " 3813 "iscsitadm(1M) to share this volume\n")); 3814 ret = 1; 3815 } else if (!zfs_is_shared_iscsi(zhp)) { 3816 (void) fprintf(stderr, gettext("cannot " 3817 "unshare '%s': not currently shared\n"), 3818 zfs_get_name(zhp)); 3819 ret = 1; 3820 } else if (zfs_unshare_iscsi(zhp) != 0) { 3821 ret = 1; 3822 } 3823 } 3824 3825 zfs_close(zhp); 3826 } 3827 3828 return (ret); 3829 } 3830 3831 /* 3832 * zfs unmount -a 3833 * zfs unmount filesystem 3834 * 3835 * Unmount all filesystems, or a specific ZFS filesystem. 3836 */ 3837 static int 3838 zfs_do_unmount(int argc, char **argv) 3839 { 3840 return (unshare_unmount(OP_MOUNT, argc, argv)); 3841 } 3842 3843 /* 3844 * zfs unshare -a 3845 * zfs unshare filesystem 3846 * 3847 * Unshare all filesystems, or a specific ZFS filesystem. 3848 */ 3849 static int 3850 zfs_do_unshare(int argc, char **argv) 3851 { 3852 return (unshare_unmount(OP_SHARE, argc, argv)); 3853 } 3854 3855 /* ARGSUSED */ 3856 static int 3857 zfs_do_python(int argc, char **argv) 3858 { 3859 (void) execv(pypath, argv-1); 3860 (void) printf("internal error: %s not found\n", pypath); 3861 return (-1); 3862 } 3863 3864 /* 3865 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is 3866 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'. 3867 */ 3868 static int 3869 manual_mount(int argc, char **argv) 3870 { 3871 zfs_handle_t *zhp; 3872 char mountpoint[ZFS_MAXPROPLEN]; 3873 char mntopts[MNT_LINE_MAX] = { '\0' }; 3874 int ret; 3875 int c; 3876 int flags = 0; 3877 char *dataset, *path; 3878 3879 /* check options */ 3880 while ((c = getopt(argc, argv, ":mo:O")) != -1) { 3881 switch (c) { 3882 case 'o': 3883 (void) strlcpy(mntopts, optarg, sizeof (mntopts)); 3884 break; 3885 case 'O': 3886 flags |= MS_OVERLAY; 3887 break; 3888 case 'm': 3889 flags |= MS_NOMNTTAB; 3890 break; 3891 case ':': 3892 (void) fprintf(stderr, gettext("missing argument for " 3893 "'%c' option\n"), optopt); 3894 usage(B_FALSE); 3895 break; 3896 case '?': 3897 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3898 optopt); 3899 (void) fprintf(stderr, gettext("usage: mount [-o opts] " 3900 "<path>\n")); 3901 return (2); 3902 } 3903 } 3904 3905 argc -= optind; 3906 argv += optind; 3907 3908 /* check that we only have two arguments */ 3909 if (argc != 2) { 3910 if (argc == 0) 3911 (void) fprintf(stderr, gettext("missing dataset " 3912 "argument\n")); 3913 else if (argc == 1) 3914 (void) fprintf(stderr, 3915 gettext("missing mountpoint argument\n")); 3916 else 3917 (void) fprintf(stderr, gettext("too many arguments\n")); 3918 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n"); 3919 return (2); 3920 } 3921 3922 dataset = argv[0]; 3923 path = argv[1]; 3924 3925 /* try to open the dataset */ 3926 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL) 3927 return (1); 3928 3929 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 3930 sizeof (mountpoint), NULL, NULL, 0, B_FALSE); 3931 3932 /* check for legacy mountpoint and complain appropriately */ 3933 ret = 0; 3934 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) { 3935 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS, 3936 NULL, 0, mntopts, sizeof (mntopts)) != 0) { 3937 (void) fprintf(stderr, gettext("mount failed: %s\n"), 3938 strerror(errno)); 3939 ret = 1; 3940 } 3941 } else { 3942 (void) fprintf(stderr, gettext("filesystem '%s' cannot be " 3943 "mounted using 'mount -F zfs'\n"), dataset); 3944 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' " 3945 "instead.\n"), path); 3946 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' " 3947 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n")); 3948 (void) fprintf(stderr, gettext("See zfs(1M) for more " 3949 "information.\n")); 3950 ret = 1; 3951 } 3952 3953 return (ret); 3954 } 3955 3956 /* 3957 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow 3958 * unmounts of non-legacy filesystems, as this is the dominant administrative 3959 * interface. 3960 */ 3961 static int 3962 manual_unmount(int argc, char **argv) 3963 { 3964 int flags = 0; 3965 int c; 3966 3967 /* check options */ 3968 while ((c = getopt(argc, argv, "f")) != -1) { 3969 switch (c) { 3970 case 'f': 3971 flags = MS_FORCE; 3972 break; 3973 case '?': 3974 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3975 optopt); 3976 (void) fprintf(stderr, gettext("usage: unmount [-f] " 3977 "<path>\n")); 3978 return (2); 3979 } 3980 } 3981 3982 argc -= optind; 3983 argv += optind; 3984 3985 /* check arguments */ 3986 if (argc != 1) { 3987 if (argc == 0) 3988 (void) fprintf(stderr, gettext("missing path " 3989 "argument\n")); 3990 else 3991 (void) fprintf(stderr, gettext("too many arguments\n")); 3992 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n")); 3993 return (2); 3994 } 3995 3996 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE)); 3997 } 3998 3999 static int 4000 volcheck(zpool_handle_t *zhp, void *data) 4001 { 4002 boolean_t isinit = *((boolean_t *)data); 4003 4004 if (isinit) 4005 return (zpool_create_zvol_links(zhp)); 4006 else 4007 return (zpool_remove_zvol_links(zhp)); 4008 } 4009 4010 /* 4011 * Iterate over all pools in the system and either create or destroy /dev/zvol 4012 * links, depending on the value of 'isinit'. 4013 */ 4014 static int 4015 do_volcheck(boolean_t isinit) 4016 { 4017 return (zpool_iter(g_zfs, volcheck, &isinit) ? 1 : 0); 4018 } 4019 4020 static int 4021 find_command_idx(char *command, int *idx) 4022 { 4023 int i; 4024 4025 for (i = 0; i < NCOMMAND; i++) { 4026 if (command_table[i].name == NULL) 4027 continue; 4028 4029 if (strcmp(command, command_table[i].name) == 0) { 4030 *idx = i; 4031 return (0); 4032 } 4033 } 4034 return (1); 4035 } 4036 4037 int 4038 main(int argc, char **argv) 4039 { 4040 int ret; 4041 int i; 4042 char *progname; 4043 char *cmdname; 4044 4045 (void) setlocale(LC_ALL, ""); 4046 (void) textdomain(TEXT_DOMAIN); 4047 4048 opterr = 0; 4049 4050 if ((g_zfs = libzfs_init()) == NULL) { 4051 (void) fprintf(stderr, gettext("internal error: failed to " 4052 "initialize ZFS library\n")); 4053 return (1); 4054 } 4055 4056 zpool_set_history_str("zfs", argc, argv, history_str); 4057 verify(zpool_stage_history(g_zfs, history_str) == 0); 4058 4059 libzfs_print_on_error(g_zfs, B_TRUE); 4060 4061 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) { 4062 (void) fprintf(stderr, gettext("internal error: unable to " 4063 "open %s\n"), MNTTAB); 4064 return (1); 4065 } 4066 4067 /* 4068 * This command also doubles as the /etc/fs mount and unmount program. 4069 * Determine if we should take this behavior based on argv[0]. 4070 */ 4071 progname = basename(argv[0]); 4072 if (strcmp(progname, "mount") == 0) { 4073 ret = manual_mount(argc, argv); 4074 } else if (strcmp(progname, "umount") == 0) { 4075 ret = manual_unmount(argc, argv); 4076 } else { 4077 /* 4078 * Make sure the user has specified some command. 4079 */ 4080 if (argc < 2) { 4081 (void) fprintf(stderr, gettext("missing command\n")); 4082 usage(B_FALSE); 4083 } 4084 4085 cmdname = argv[1]; 4086 4087 /* 4088 * The 'umount' command is an alias for 'unmount' 4089 */ 4090 if (strcmp(cmdname, "umount") == 0) 4091 cmdname = "unmount"; 4092 4093 /* 4094 * The 'recv' command is an alias for 'receive' 4095 */ 4096 if (strcmp(cmdname, "recv") == 0) 4097 cmdname = "receive"; 4098 4099 /* 4100 * Special case '-?' 4101 */ 4102 if (strcmp(cmdname, "-?") == 0) 4103 usage(B_TRUE); 4104 4105 /* 4106 * 'volinit' and 'volfini' do not appear in the usage message, 4107 * so we have to special case them here. 4108 */ 4109 if (strcmp(cmdname, "volinit") == 0) 4110 return (do_volcheck(B_TRUE)); 4111 else if (strcmp(cmdname, "volfini") == 0) 4112 return (do_volcheck(B_FALSE)); 4113 4114 /* 4115 * Run the appropriate command. 4116 */ 4117 libzfs_mnttab_cache(g_zfs, B_TRUE); 4118 if (find_command_idx(cmdname, &i) == 0) { 4119 current_command = &command_table[i]; 4120 ret = command_table[i].func(argc - 1, argv + 1); 4121 } else if (strchr(cmdname, '=') != NULL) { 4122 verify(find_command_idx("set", &i) == 0); 4123 current_command = &command_table[i]; 4124 ret = command_table[i].func(argc, argv); 4125 } else { 4126 (void) fprintf(stderr, gettext("unrecognized " 4127 "command '%s'\n"), cmdname); 4128 usage(B_FALSE); 4129 } 4130 libzfs_mnttab_cache(g_zfs, B_FALSE); 4131 } 4132 4133 (void) fclose(mnttab_file); 4134 4135 libzfs_fini(g_zfs); 4136 4137 /* 4138 * The 'ZFS_ABORT' environment variable causes us to dump core on exit 4139 * for the purposes of running ::findleaks. 4140 */ 4141 if (getenv("ZFS_ABORT") != NULL) { 4142 (void) printf("dumping core by request\n"); 4143 abort(); 4144 } 4145 4146 return (ret); 4147 } 4148