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 <sys/mntent.h> 43#include <sys/mnttab.h> 44#include <sys/mount.h> 45#include <sys/stat.h> 46#include <sys/avl.h> 47 48#include <libzfs.h> 49#include <libuutil.h> 50 51#include "zfs_iter.h" 52#include "zfs_util.h" 53 54libzfs_handle_t *g_zfs; 55 56static FILE *mnttab_file; 57static char history_str[HIS_MAX_RECORD_LEN]; 58 59static int zfs_do_clone(int argc, char **argv); 60static int zfs_do_create(int argc, char **argv); 61static int zfs_do_destroy(int argc, char **argv); 62static int zfs_do_get(int argc, char **argv); 63static int zfs_do_inherit(int argc, char **argv); 64static int zfs_do_list(int argc, char **argv); 65static int zfs_do_mount(int argc, char **argv); 66static int zfs_do_rename(int argc, char **argv); 67static int zfs_do_rollback(int argc, char **argv); 68static int zfs_do_set(int argc, char **argv); 69static int zfs_do_upgrade(int argc, char **argv); 70static int zfs_do_snapshot(int argc, char **argv); 71static int zfs_do_unmount(int argc, char **argv); 72static int zfs_do_share(int argc, char **argv); 73static int zfs_do_unshare(int argc, char **argv); 74static int zfs_do_send(int argc, char **argv); 75static int zfs_do_receive(int argc, char **argv); 76static int zfs_do_promote(int argc, char **argv); 77static int zfs_do_allow(int argc, char **argv); 78static int zfs_do_unallow(int argc, char **argv); 79static int zfs_do_jail(int argc, char **argv); 80static int zfs_do_unjail(int argc, char **argv); 81 82/* 83 * Enable a reasonable set of defaults for libumem debugging on DEBUG builds. 84 */ 85 86#ifdef DEBUG 87const char * 88_umem_debug_init(void) 89{ 90 return ("default,verbose"); /* $UMEM_DEBUG setting */ 91} 92 93const char * 94_umem_logging_init(void) 95{ 96 return ("fail,contents"); /* $UMEM_LOGGING setting */ 97} 98#endif 99 100typedef enum { 101 HELP_CLONE, 102 HELP_CREATE, 103 HELP_DESTROY, 104 HELP_GET, 105 HELP_INHERIT, 106 HELP_UPGRADE, 107 HELP_JAIL, 108 HELP_UNJAIL, 109 HELP_LIST, 110 HELP_MOUNT, 111 HELP_PROMOTE, 112 HELP_RECEIVE, 113 HELP_RENAME, 114 HELP_ROLLBACK, 115 HELP_SEND, 116 HELP_SET, 117 HELP_SHARE, 118 HELP_SNAPSHOT, 119 HELP_UNMOUNT, 120 HELP_UNSHARE, 121 HELP_ALLOW, 122 HELP_UNALLOW 123} zfs_help_t; 124 125typedef struct zfs_command { 126 const char *name; 127 int (*func)(int argc, char **argv); 128 zfs_help_t usage; 129} zfs_command_t; 130 131/* 132 * Master command table. Each ZFS command has a name, associated function, and 133 * usage message. The usage messages need to be internationalized, so we have 134 * to have a function to return the usage message based on a command index. 135 * 136 * These commands are organized according to how they are displayed in the usage 137 * message. An empty command (one with a NULL name) indicates an empty line in 138 * the generic usage message. 139 */ 140static zfs_command_t command_table[] = { 141 { "create", zfs_do_create, HELP_CREATE }, 142 { "destroy", zfs_do_destroy, HELP_DESTROY }, 143 { NULL }, 144 { "snapshot", zfs_do_snapshot, HELP_SNAPSHOT }, 145 { "rollback", zfs_do_rollback, HELP_ROLLBACK }, 146 { "clone", zfs_do_clone, HELP_CLONE }, 147 { "promote", zfs_do_promote, HELP_PROMOTE }, 148 { "rename", zfs_do_rename, HELP_RENAME }, 149 { NULL }, 150 { "list", zfs_do_list, HELP_LIST }, 151 { NULL }, 152 { "set", zfs_do_set, HELP_SET }, 153 { "get", zfs_do_get, HELP_GET }, 154 { "inherit", zfs_do_inherit, HELP_INHERIT }, 155 { "upgrade", zfs_do_upgrade, HELP_UPGRADE }, 156 { NULL }, 157 { "mount", zfs_do_mount, HELP_MOUNT }, 158 { "unmount", zfs_do_unmount, HELP_UNMOUNT }, 159 { "share", zfs_do_share, HELP_SHARE }, 160 { "unshare", zfs_do_unshare, HELP_UNSHARE }, 161 { NULL }, 162 { "send", zfs_do_send, HELP_SEND }, 163 { "receive", zfs_do_receive, HELP_RECEIVE }, 164 { NULL }, 165 { "allow", zfs_do_allow, HELP_ALLOW }, 166 { NULL }, 167 { "unallow", zfs_do_unallow, HELP_UNALLOW }, 168 { NULL }, 169 { "jail", zfs_do_jail, HELP_JAIL }, 170 { "unjail", zfs_do_unjail, HELP_UNJAIL }, 171}; 172 173#define NCOMMAND (sizeof (command_table) / sizeof (command_table[0])) 174 175zfs_command_t *current_command; 176 177static const char * 178get_usage(zfs_help_t idx) 179{ 180 switch (idx) { 181 case HELP_CLONE: 182 return (gettext("\tclone [-p] [-o property=value] ... " 183 "<snapshot> <filesystem|volume>\n")); 184 case HELP_CREATE: 185 return (gettext("\tcreate [-p] [-o property=value] ... " 186 "<filesystem>\n" 187 "\tcreate [-ps] [-b blocksize] [-o property=value] ... " 188 "-V <size> <volume>\n")); 189 case HELP_DESTROY: 190 return (gettext("\tdestroy [-rRf] " 191 "<filesystem|volume|snapshot>\n")); 192 case HELP_GET:
|
193 return (gettext("\tget [-rHp] [-o field[,...]] "
194 "[-s source[,...]]\n"
|
193 return (gettext("\tget [-rHp] [-d max] " 194 "[-o field[,...]] [-s source[,...]]\n" |
195 "\t <\"all\" | property[,...]> " 196 "[filesystem|volume|snapshot] ...\n")); 197 case HELP_INHERIT: 198 return (gettext("\tinherit [-r] <property> " 199 "<filesystem|volume|snapshot> ...\n")); 200 case HELP_UPGRADE: 201 return (gettext("\tupgrade [-v]\n" 202 "\tupgrade [-r] [-V version] <-a | filesystem ...>\n")); 203 case HELP_JAIL: 204 return (gettext("\tjail <jailid> <filesystem>\n")); 205 case HELP_UNJAIL: 206 return (gettext("\tunjail <jailid> <filesystem>\n")); 207 case HELP_LIST:
|
208 return (gettext("\tlist [-rH] [-o property[,...]] "
209 "[-t type[,...]] [-s property] ...\n"
|
208 return (gettext("\tlist [-rH][-d max] " 209 "[-o property[,...]] [-t type[,...]] [-s property] ...\n" |
210 "\t [-S property] ... " 211 "[filesystem|volume|snapshot] ...\n")); 212 case HELP_MOUNT: 213 return (gettext("\tmount\n" 214 "\tmount [-vO] [-o opts] <-a | filesystem>\n")); 215 case HELP_PROMOTE: 216 return (gettext("\tpromote <clone-filesystem>\n")); 217 case HELP_RECEIVE: 218 return (gettext("\treceive [-vnF] <filesystem|volume|" 219 "snapshot>\n" 220 "\treceive [-vnF] -d <filesystem>\n")); 221 case HELP_RENAME: 222 return (gettext("\trename <filesystem|volume|snapshot> " 223 "<filesystem|volume|snapshot>\n" 224 "\trename -p <filesystem|volume> <filesystem|volume>\n" 225 "\trename -r <snapshot> <snapshot>")); 226 case HELP_ROLLBACK: 227 return (gettext("\trollback [-rRf] <snapshot>\n")); 228 case HELP_SEND: 229 return (gettext("\tsend [-R] [-[iI] snapshot] <snapshot>\n")); 230 case HELP_SET: 231 return (gettext("\tset <property=value> " 232 "<filesystem|volume|snapshot> ...\n")); 233 case HELP_SHARE: 234 return (gettext("\tshare <-a | filesystem>\n")); 235 case HELP_SNAPSHOT: 236 return (gettext("\tsnapshot [-r] [-o property=value] ... " 237 "<filesystem@snapname|volume@snapname>\n")); 238 case HELP_UNMOUNT: 239 return (gettext("\tunmount [-f] " 240 "<-a | filesystem|mountpoint>\n")); 241 case HELP_UNSHARE: 242 return (gettext("\tunshare [-f] " 243 "<-a | filesystem|mountpoint>\n")); 244 case HELP_ALLOW: 245 return (gettext("\tallow [-ldug] " 246 "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n" 247 "\t <filesystem|volume>\n" 248 "\tallow [-ld] -e <perm|@setname>[,...] " 249 "<filesystem|volume>\n" 250 "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n" 251 "\tallow -s @setname <perm|@setname>[,...] " 252 "<filesystem|volume>\n")); 253 case HELP_UNALLOW: 254 return (gettext("\tunallow [-rldug] " 255 "<\"everyone\"|user|group>[,...]\n" 256 "\t [<perm|@setname>[,...]] <filesystem|volume>\n" 257 "\tunallow [-rld] -e [<perm|@setname>[,...]] " 258 "<filesystem|volume>\n" 259 "\tunallow [-r] -c [<perm|@setname>[,...]] " 260 "<filesystem|volume>\n" 261 "\tunallow [-r] -s @setname [<perm|@setname>[,...]] " 262 "<filesystem|volume>\n")); 263 } 264 265 abort(); 266 /* NOTREACHED */ 267} 268 269/* 270 * Utility function to guarantee malloc() success. 271 */ 272void * 273safe_malloc(size_t size) 274{ 275 void *data; 276 277 if ((data = calloc(1, size)) == NULL) { 278 (void) fprintf(stderr, "internal error: out of memory\n"); 279 exit(1); 280 } 281 282 return (data); 283} 284 285/* 286 * Callback routine that will print out information for each of 287 * the properties. 288 */ 289static int 290usage_prop_cb(int prop, void *cb) 291{ 292 FILE *fp = cb; 293 294 (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop)); 295 296 if (zfs_prop_readonly(prop)) 297 (void) fprintf(fp, " NO "); 298 else 299 (void) fprintf(fp, "YES "); 300 301 if (zfs_prop_inheritable(prop)) 302 (void) fprintf(fp, " YES "); 303 else 304 (void) fprintf(fp, " NO "); 305 306 if (zfs_prop_values(prop) == NULL) 307 (void) fprintf(fp, "-\n"); 308 else 309 (void) fprintf(fp, "%s\n", zfs_prop_values(prop)); 310 311 return (ZPROP_CONT); 312} 313 314/* 315 * Display usage message. If we're inside a command, display only the usage for 316 * that command. Otherwise, iterate over the entire command table and display 317 * a complete usage message. 318 */ 319static void 320usage(boolean_t requested) 321{ 322 int i; 323 boolean_t show_properties = B_FALSE; 324 boolean_t show_permissions = B_FALSE; 325 FILE *fp = requested ? stdout : stderr; 326 327 if (current_command == NULL) { 328 329 (void) fprintf(fp, gettext("usage: zfs command args ...\n")); 330 (void) fprintf(fp, 331 gettext("where 'command' is one of the following:\n\n")); 332 333 for (i = 0; i < NCOMMAND; i++) { 334 if (command_table[i].name == NULL) 335 (void) fprintf(fp, "\n"); 336 else 337 (void) fprintf(fp, "%s", 338 get_usage(command_table[i].usage)); 339 } 340 341 (void) fprintf(fp, gettext("\nEach dataset is of the form: " 342 "pool/[dataset/]*dataset[@name]\n")); 343 } else { 344 (void) fprintf(fp, gettext("usage:\n")); 345 (void) fprintf(fp, "%s", get_usage(current_command->usage)); 346 } 347 348 if (current_command != NULL && 349 (strcmp(current_command->name, "set") == 0 || 350 strcmp(current_command->name, "get") == 0 || 351 strcmp(current_command->name, "inherit") == 0 || 352 strcmp(current_command->name, "list") == 0)) 353 show_properties = B_TRUE; 354 355 if (current_command != NULL && 356 (strcmp(current_command->name, "allow") == 0 || 357 strcmp(current_command->name, "unallow") == 0)) 358 show_permissions = B_TRUE; 359 360 if (show_properties) { 361 362 (void) fprintf(fp, 363 gettext("\nThe following properties are supported:\n")); 364 365 (void) fprintf(fp, "\n\t%-14s %s %s %s\n\n", 366 "PROPERTY", "EDIT", "INHERIT", "VALUES"); 367 368 /* Iterate over all properties */ 369 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE, 370 ZFS_TYPE_DATASET); 371 372 (void) fprintf(fp, gettext("\nSizes are specified in bytes " 373 "with standard units such as K, M, G, etc.\n")); 374 (void) fprintf(fp, gettext("\nUser-defined properties can " 375 "be specified by using a name containing a colon (:).\n")); 376 377 } else if (show_permissions) { 378 (void) fprintf(fp, 379 gettext("\nThe following permissions are supported:\n")); 380 381 zfs_deleg_permissions(); 382 } else { 383 /* 384 * TRANSLATION NOTE: 385 * "zfs set|get" must not be localised this is the 386 * command name and arguments. 387 */ 388 389 (void) fprintf(fp, 390 gettext("\nFor the property list, run: zfs set|get\n")); 391 392 (void) fprintf(fp, 393 gettext("\nFor the delegated permission list, run:" 394 " zfs allow|unallow\n")); 395 } 396 397 /* 398 * See comments at end of main(). 399 */ 400 if (getenv("ZFS_ABORT") != NULL) { 401 (void) printf("dumping core by request\n"); 402 abort(); 403 } 404 405 exit(requested ? 0 : 2); 406} 407 408static int 409parseprop(nvlist_t *props) 410{ 411 char *propname = optarg; 412 char *propval, *strval; 413 414 if ((propval = strchr(propname, '=')) == NULL) { 415 (void) fprintf(stderr, gettext("missing " 416 "'=' for -o option\n")); 417 return (-1); 418 } 419 *propval = '\0'; 420 propval++; 421 if (nvlist_lookup_string(props, propname, &strval) == 0) { 422 (void) fprintf(stderr, gettext("property '%s' " 423 "specified multiple times\n"), propname); 424 return (-1); 425 } 426 if (nvlist_add_string(props, propname, propval) != 0) { 427 (void) fprintf(stderr, gettext("internal " 428 "error: out of memory\n")); 429 return (-1); 430 } 431 return (0); 432 433} 434
|
435static int 436parse_depth(char *opt, int *flags) 437{ 438 char *tmp; 439 int depth; 440 441 depth = (int)strtol(opt, &tmp, 0); 442 if (*tmp) { 443 (void) fprintf(stderr, 444 gettext("%s is not an integer\n"), optarg); 445 usage(B_FALSE); 446 } 447 if (depth < 0) { 448 (void) fprintf(stderr, 449 gettext("Depth can not be negative.\n")); 450 usage(B_FALSE); 451 } 452 *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE); 453 return (depth); 454} 455 |
456/* 457 * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol> 458 * 459 * Given an existing dataset, create a writable copy whose initial contents 460 * are the same as the source. The newly created dataset maintains a 461 * dependency on the original; the original cannot be destroyed so long as 462 * the clone exists. 463 * 464 * The '-p' flag creates all the non-existing ancestors of the target first. 465 */ 466static int 467zfs_do_clone(int argc, char **argv) 468{ 469 zfs_handle_t *zhp = NULL; 470 boolean_t parents = B_FALSE; 471 nvlist_t *props; 472 int ret; 473 int c; 474 475 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 476 (void) fprintf(stderr, gettext("internal error: " 477 "out of memory\n")); 478 return (1); 479 } 480 481 /* check options */ 482 while ((c = getopt(argc, argv, "o:p")) != -1) { 483 switch (c) { 484 case 'o': 485 if (parseprop(props)) 486 return (1); 487 break; 488 case 'p': 489 parents = B_TRUE; 490 break; 491 case '?': 492 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 493 optopt); 494 goto usage; 495 } 496 } 497 498 argc -= optind; 499 argv += optind; 500 501 /* check number of arguments */ 502 if (argc < 1) { 503 (void) fprintf(stderr, gettext("missing source dataset " 504 "argument\n")); 505 goto usage; 506 } 507 if (argc < 2) { 508 (void) fprintf(stderr, gettext("missing target dataset " 509 "argument\n")); 510 goto usage; 511 } 512 if (argc > 2) { 513 (void) fprintf(stderr, gettext("too many arguments\n")); 514 goto usage; 515 } 516 517 /* open the source dataset */ 518 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 519 return (1); 520 521 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM | 522 ZFS_TYPE_VOLUME)) { 523 /* 524 * Now create the ancestors of the target dataset. If the 525 * target already exists and '-p' option was used we should not 526 * complain. 527 */ 528 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | 529 ZFS_TYPE_VOLUME)) 530 return (0); 531 if (zfs_create_ancestors(g_zfs, argv[1]) != 0) 532 return (1); 533 } 534 535 /* pass to libzfs */ 536 ret = zfs_clone(zhp, argv[1], props); 537 538 /* create the mountpoint if necessary */ 539 if (ret == 0) { 540 zfs_handle_t *clone; 541 542 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET); 543 if (clone != NULL) { 544 if ((ret = zfs_mount(clone, NULL, 0)) == 0) 545 ret = zfs_share(clone); 546 zfs_close(clone); 547 } 548 } 549 550 zfs_close(zhp); 551 nvlist_free(props); 552 553 return (!!ret); 554 555usage: 556 if (zhp) 557 zfs_close(zhp); 558 nvlist_free(props); 559 usage(B_FALSE); 560 return (-1); 561} 562 563/* 564 * zfs create [-p] [-o prop=value] ... fs 565 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size 566 * 567 * Create a new dataset. This command can be used to create filesystems 568 * and volumes. Snapshot creation is handled by 'zfs snapshot'. 569 * For volumes, the user must specify a size to be used. 570 * 571 * The '-s' flag applies only to volumes, and indicates that we should not try 572 * to set the reservation for this volume. By default we set a reservation 573 * equal to the size for any volume. For pools with SPA_VERSION >= 574 * SPA_VERSION_REFRESERVATION, we set a refreservation instead. 575 * 576 * The '-p' flag creates all the non-existing ancestors of the target first. 577 */ 578static int 579zfs_do_create(int argc, char **argv) 580{ 581 zfs_type_t type = ZFS_TYPE_FILESYSTEM; 582 zfs_handle_t *zhp = NULL; 583 uint64_t volsize; 584 int c; 585 boolean_t noreserve = B_FALSE; 586 boolean_t bflag = B_FALSE; 587 boolean_t parents = B_FALSE; 588 int ret = 1; 589 nvlist_t *props; 590 uint64_t intval; 591 int canmount; 592 593 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 594 (void) fprintf(stderr, gettext("internal error: " 595 "out of memory\n")); 596 return (1); 597 } 598 599 /* check options */ 600 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) { 601 switch (c) { 602 case 'V': 603 type = ZFS_TYPE_VOLUME; 604 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 605 (void) fprintf(stderr, gettext("bad volume " 606 "size '%s': %s\n"), optarg, 607 libzfs_error_description(g_zfs)); 608 goto error; 609 } 610 611 if (nvlist_add_uint64(props, 612 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 613 intval) != 0) { 614 (void) fprintf(stderr, gettext("internal " 615 "error: out of memory\n")); 616 goto error; 617 } 618 volsize = intval; 619 break; 620 case 'p': 621 parents = B_TRUE; 622 break; 623 case 'b': 624 bflag = B_TRUE; 625 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 626 (void) fprintf(stderr, gettext("bad volume " 627 "block size '%s': %s\n"), optarg, 628 libzfs_error_description(g_zfs)); 629 goto error; 630 } 631 632 if (nvlist_add_uint64(props, 633 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 634 intval) != 0) { 635 (void) fprintf(stderr, gettext("internal " 636 "error: out of memory\n")); 637 goto error; 638 } 639 break; 640 case 'o': 641 if (parseprop(props)) 642 goto error; 643 break; 644 case 's': 645 noreserve = B_TRUE; 646 break; 647 case ':': 648 (void) fprintf(stderr, gettext("missing size " 649 "argument\n")); 650 goto badusage; 651 break; 652 case '?': 653 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 654 optopt); 655 goto badusage; 656 } 657 } 658 659 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) { 660 (void) fprintf(stderr, gettext("'-s' and '-b' can only be " 661 "used when creating a volume\n")); 662 goto badusage; 663 } 664 665 argc -= optind; 666 argv += optind; 667 668 /* check number of arguments */ 669 if (argc == 0) { 670 (void) fprintf(stderr, gettext("missing %s argument\n"), 671 zfs_type_to_name(type)); 672 goto badusage; 673 } 674 if (argc > 1) { 675 (void) fprintf(stderr, gettext("too many arguments\n")); 676 goto badusage; 677 } 678 679 if (type == ZFS_TYPE_VOLUME && !noreserve) { 680 zpool_handle_t *zpool_handle; 681 uint64_t spa_version; 682 char *p; 683 zfs_prop_t resv_prop; 684 char *strval; 685 686 if (p = strchr(argv[0], '/')) 687 *p = '\0'; 688 zpool_handle = zpool_open(g_zfs, argv[0]); 689 if (p != NULL) 690 *p = '/'; 691 if (zpool_handle == NULL) 692 goto error; 693 spa_version = zpool_get_prop_int(zpool_handle, 694 ZPOOL_PROP_VERSION, NULL); 695 zpool_close(zpool_handle); 696 if (spa_version >= SPA_VERSION_REFRESERVATION) 697 resv_prop = ZFS_PROP_REFRESERVATION; 698 else 699 resv_prop = ZFS_PROP_RESERVATION; 700 701 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop), 702 &strval) != 0) { 703 if (nvlist_add_uint64(props, 704 zfs_prop_to_name(resv_prop), volsize) != 0) { 705 (void) fprintf(stderr, gettext("internal " 706 "error: out of memory\n")); 707 nvlist_free(props); 708 return (1); 709 } 710 } 711 } 712 713 if (parents && zfs_name_valid(argv[0], type)) { 714 /* 715 * Now create the ancestors of target dataset. If the target 716 * already exists and '-p' option was used we should not 717 * complain. 718 */ 719 if (zfs_dataset_exists(g_zfs, argv[0], type)) { 720 ret = 0; 721 goto error; 722 } 723 if (zfs_create_ancestors(g_zfs, argv[0]) != 0) 724 goto error; 725 } 726 727 /* pass to libzfs */ 728 if (zfs_create(g_zfs, argv[0], type, props) != 0) 729 goto error; 730 731 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 732 goto error; 733 /* 734 * if the user doesn't want the dataset automatically mounted, 735 * then skip the mount/share step 736 */ 737 738 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 739 740 /* 741 * Mount and/or share the new filesystem as appropriate. We provide a 742 * verbose error message to let the user know that their filesystem was 743 * in fact created, even if we failed to mount or share it. 744 */ 745 ret = 0; 746 if (canmount == ZFS_CANMOUNT_ON) { 747 if (zfs_mount(zhp, NULL, 0) != 0) { 748 (void) fprintf(stderr, gettext("filesystem " 749 "successfully created, but not mounted\n")); 750 ret = 1; 751 } else if (zfs_share(zhp) != 0) { 752 (void) fprintf(stderr, gettext("filesystem " 753 "successfully created, but not shared\n")); 754 ret = 1; 755 } 756 } 757 758error: 759 if (zhp) 760 zfs_close(zhp); 761 nvlist_free(props); 762 return (ret); 763badusage: 764 nvlist_free(props); 765 usage(B_FALSE); 766 return (2); 767} 768 769/* 770 * zfs destroy [-rf] <fs, snap, vol> 771 * 772 * -r Recursively destroy all children 773 * -R Recursively destroy all dependents, including clones 774 * -f Force unmounting of any dependents 775 * 776 * Destroys the given dataset. By default, it will unmount any filesystems, 777 * and refuse to destroy a dataset that has any dependents. A dependent can 778 * either be a child, or a clone of a child. 779 */ 780typedef struct destroy_cbdata { 781 boolean_t cb_first; 782 int cb_force; 783 int cb_recurse; 784 int cb_error; 785 int cb_needforce; 786 int cb_doclones; 787 boolean_t cb_closezhp; 788 zfs_handle_t *cb_target; 789 char *cb_snapname; 790} destroy_cbdata_t; 791 792/* 793 * Check for any dependents based on the '-r' or '-R' flags. 794 */ 795static int 796destroy_check_dependent(zfs_handle_t *zhp, void *data) 797{ 798 destroy_cbdata_t *cbp = data; 799 const char *tname = zfs_get_name(cbp->cb_target); 800 const char *name = zfs_get_name(zhp); 801 802 if (strncmp(tname, name, strlen(tname)) == 0 && 803 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) { 804 /* 805 * This is a direct descendant, not a clone somewhere else in 806 * the hierarchy. 807 */ 808 if (cbp->cb_recurse) 809 goto out; 810 811 if (cbp->cb_first) { 812 (void) fprintf(stderr, gettext("cannot destroy '%s': " 813 "%s has children\n"), 814 zfs_get_name(cbp->cb_target), 815 zfs_type_to_name(zfs_get_type(cbp->cb_target))); 816 (void) fprintf(stderr, gettext("use '-r' to destroy " 817 "the following datasets:\n")); 818 cbp->cb_first = B_FALSE; 819 cbp->cb_error = 1; 820 } 821 822 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 823 } else { 824 /* 825 * This is a clone. We only want to report this if the '-r' 826 * wasn't specified, or the target is a snapshot. 827 */ 828 if (!cbp->cb_recurse && 829 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT) 830 goto out; 831 832 if (cbp->cb_first) { 833 (void) fprintf(stderr, gettext("cannot destroy '%s': " 834 "%s has dependent clones\n"), 835 zfs_get_name(cbp->cb_target), 836 zfs_type_to_name(zfs_get_type(cbp->cb_target))); 837 (void) fprintf(stderr, gettext("use '-R' to destroy " 838 "the following datasets:\n")); 839 cbp->cb_first = B_FALSE; 840 cbp->cb_error = 1; 841 } 842 843 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 844 } 845 846out: 847 zfs_close(zhp); 848 return (0); 849} 850 851static int 852destroy_callback(zfs_handle_t *zhp, void *data) 853{ 854 destroy_cbdata_t *cbp = data; 855 856 /* 857 * Ignore pools (which we've already flagged as an error before getting 858 * here. 859 */ 860 if (strchr(zfs_get_name(zhp), '/') == NULL && 861 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 862 zfs_close(zhp); 863 return (0); 864 } 865 866 /* 867 * Bail out on the first error. 868 */ 869 if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 || 870 zfs_destroy(zhp) != 0) { 871 zfs_close(zhp); 872 return (-1); 873 } 874 875 zfs_close(zhp); 876 return (0); 877} 878 879static int 880destroy_snap_clones(zfs_handle_t *zhp, void *arg) 881{ 882 destroy_cbdata_t *cbp = arg; 883 char thissnap[MAXPATHLEN]; 884 zfs_handle_t *szhp; 885 boolean_t closezhp = cbp->cb_closezhp; 886 int rv; 887 888 (void) snprintf(thissnap, sizeof (thissnap), 889 "%s@%s", zfs_get_name(zhp), cbp->cb_snapname); 890 891 libzfs_print_on_error(g_zfs, B_FALSE); 892 szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT); 893 libzfs_print_on_error(g_zfs, B_TRUE); 894 if (szhp) { 895 /* 896 * Destroy any clones of this snapshot 897 */ 898 if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback, 899 cbp) != 0) { 900 zfs_close(szhp); 901 if (closezhp) 902 zfs_close(zhp); 903 return (-1); 904 } 905 zfs_close(szhp); 906 } 907 908 cbp->cb_closezhp = B_TRUE; 909 rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg); 910 if (closezhp) 911 zfs_close(zhp); 912 return (rv); 913} 914 915static int 916zfs_do_destroy(int argc, char **argv) 917{ 918 destroy_cbdata_t cb = { 0 }; 919 int c; 920 zfs_handle_t *zhp; 921 char *cp; 922 923 /* check options */ 924 while ((c = getopt(argc, argv, "frR")) != -1) { 925 switch (c) { 926 case 'f': 927 cb.cb_force = 1; 928 break; 929 case 'r': 930 cb.cb_recurse = 1; 931 break; 932 case 'R': 933 cb.cb_recurse = 1; 934 cb.cb_doclones = 1; 935 break; 936 case '?': 937 default: 938 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 939 optopt); 940 usage(B_FALSE); 941 } 942 } 943 944 argc -= optind; 945 argv += optind; 946 947 /* check number of arguments */ 948 if (argc == 0) { 949 (void) fprintf(stderr, gettext("missing path argument\n")); 950 usage(B_FALSE); 951 } 952 if (argc > 1) { 953 (void) fprintf(stderr, gettext("too many arguments\n")); 954 usage(B_FALSE); 955 } 956 957 /* 958 * If we are doing recursive destroy of a snapshot, then the 959 * named snapshot may not exist. Go straight to libzfs. 960 */ 961 if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) { 962 int ret; 963 964 *cp = '\0'; 965 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 966 return (1); 967 *cp = '@'; 968 cp++; 969 970 if (cb.cb_doclones) { 971 cb.cb_snapname = cp; 972 if (destroy_snap_clones(zhp, &cb) != 0) { 973 zfs_close(zhp); 974 return (1); 975 } 976 } 977 978 ret = zfs_destroy_snaps(zhp, cp); 979 zfs_close(zhp); 980 if (ret) { 981 (void) fprintf(stderr, 982 gettext("no snapshots destroyed\n")); 983 } 984 return (ret != 0); 985 } 986 987 988 /* Open the given dataset */ 989 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 990 return (1); 991 992 cb.cb_target = zhp; 993 994 /* 995 * Perform an explicit check for pools before going any further. 996 */ 997 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL && 998 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 999 (void) fprintf(stderr, gettext("cannot destroy '%s': " 1000 "operation does not apply to pools\n"), 1001 zfs_get_name(zhp)); 1002 (void) fprintf(stderr, gettext("use 'zfs destroy -r " 1003 "%s' to destroy all datasets in the pool\n"), 1004 zfs_get_name(zhp)); 1005 (void) fprintf(stderr, gettext("use 'zpool destroy %s' " 1006 "to destroy the pool itself\n"), zfs_get_name(zhp)); 1007 zfs_close(zhp); 1008 return (1); 1009 } 1010 1011 /* 1012 * Check for any dependents and/or clones. 1013 */ 1014 cb.cb_first = B_TRUE; 1015 if (!cb.cb_doclones && 1016 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent, 1017 &cb) != 0) { 1018 zfs_close(zhp); 1019 return (1); 1020 } 1021 1022 if (cb.cb_error || 1023 zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0) { 1024 zfs_close(zhp); 1025 return (1); 1026 } 1027 1028 /* 1029 * Do the real thing. The callback will close the handle regardless of 1030 * whether it succeeds or not. 1031 */ 1032 1033 if (destroy_callback(zhp, &cb) != 0) 1034 return (1); 1035 1036 1037 return (0); 1038} 1039 1040/* 1041 * zfs get [-rHp] [-o field[,field]...] [-s source[,source]...] 1042 * < all | property[,property]... > < fs | snap | vol > ... 1043 * 1044 * -r recurse over any child datasets 1045 * -H scripted mode. Headers are stripped, and fields are separated 1046 * by tabs instead of spaces. 1047 * -o Set of fields to display. One of "name,property,value,source". 1048 * Default is all four. 1049 * -s Set of sources to allow. One of 1050 * "local,default,inherited,temporary,none". Default is all 1051 * five. 1052 * -p Display values in parsable (literal) format. 1053 * 1054 * Prints properties for the given datasets. The user can control which 1055 * columns to display as well as which property types to allow. 1056 */ 1057 1058/* 1059 * Invoked to display the properties for a single dataset. 1060 */ 1061static int 1062get_callback(zfs_handle_t *zhp, void *data) 1063{ 1064 char buf[ZFS_MAXPROPLEN]; 1065 zprop_source_t sourcetype; 1066 char source[ZFS_MAXNAMELEN]; 1067 zprop_get_cbdata_t *cbp = data; 1068 nvlist_t *userprop = zfs_get_user_props(zhp); 1069 zprop_list_t *pl = cbp->cb_proplist; 1070 nvlist_t *propval; 1071 char *strval; 1072 char *sourceval; 1073 1074 for (; pl != NULL; pl = pl->pl_next) { 1075 /* 1076 * Skip the special fake placeholder. This will also skip over 1077 * the name property when 'all' is specified. 1078 */ 1079 if (pl->pl_prop == ZFS_PROP_NAME && 1080 pl == cbp->cb_proplist) 1081 continue; 1082 1083 if (pl->pl_prop != ZPROP_INVAL) { 1084 if (zfs_prop_get(zhp, pl->pl_prop, buf, 1085 sizeof (buf), &sourcetype, source, 1086 sizeof (source), 1087 cbp->cb_literal) != 0) { 1088 if (pl->pl_all) 1089 continue; 1090 if (!zfs_prop_valid_for_type(pl->pl_prop, 1091 ZFS_TYPE_DATASET)) { 1092 (void) fprintf(stderr, 1093 gettext("No such property '%s'\n"), 1094 zfs_prop_to_name(pl->pl_prop)); 1095 continue; 1096 } 1097 sourcetype = ZPROP_SRC_NONE; 1098 (void) strlcpy(buf, "-", sizeof (buf)); 1099 } 1100 1101 zprop_print_one_property(zfs_get_name(zhp), cbp, 1102 zfs_prop_to_name(pl->pl_prop), 1103 buf, sourcetype, source); 1104 } else { 1105 if (nvlist_lookup_nvlist(userprop, 1106 pl->pl_user_prop, &propval) != 0) { 1107 if (pl->pl_all) 1108 continue; 1109 sourcetype = ZPROP_SRC_NONE; 1110 strval = "-"; 1111 } else { 1112 verify(nvlist_lookup_string(propval, 1113 ZPROP_VALUE, &strval) == 0); 1114 verify(nvlist_lookup_string(propval, 1115 ZPROP_SOURCE, &sourceval) == 0); 1116 1117 if (strcmp(sourceval, 1118 zfs_get_name(zhp)) == 0) { 1119 sourcetype = ZPROP_SRC_LOCAL; 1120 } else { 1121 sourcetype = ZPROP_SRC_INHERITED; 1122 (void) strlcpy(source, 1123 sourceval, sizeof (source)); 1124 } 1125 } 1126 1127 zprop_print_one_property(zfs_get_name(zhp), cbp, 1128 pl->pl_user_prop, strval, sourcetype, 1129 source); 1130 } 1131 } 1132 1133 return (0); 1134} 1135 1136static int 1137zfs_do_get(int argc, char **argv) 1138{ 1139 zprop_get_cbdata_t cb = { 0 }; 1140 int i, c, flags = 0; 1141 char *value, *fields; 1142 int ret;
|
1143 int limit = 0; |
1144 zprop_list_t fake_name = { 0 }; 1145 1146 /* 1147 * Set up default columns and sources. 1148 */ 1149 cb.cb_sources = ZPROP_SRC_ALL; 1150 cb.cb_columns[0] = GET_COL_NAME; 1151 cb.cb_columns[1] = GET_COL_PROPERTY; 1152 cb.cb_columns[2] = GET_COL_VALUE; 1153 cb.cb_columns[3] = GET_COL_SOURCE; 1154 cb.cb_type = ZFS_TYPE_DATASET; 1155 1156 /* check options */
|
1135 while ((c = getopt(argc, argv, ":o:s:rHp")) != -1) {
|
1157 while ((c = getopt(argc, argv, ":d:o:s:rHp")) != -1) { |
1158 switch (c) { 1159 case 'p': 1160 cb.cb_literal = B_TRUE; 1161 break;
|
1162 case 'd': 1163 limit = parse_depth(optarg, &flags); 1164 break; |
1165 case 'r': 1166 flags |= ZFS_ITER_RECURSE; 1167 break; 1168 case 'H': 1169 cb.cb_scripted = B_TRUE; 1170 break; 1171 case ':': 1172 (void) fprintf(stderr, gettext("missing argument for " 1173 "'%c' option\n"), optopt); 1174 usage(B_FALSE); 1175 break; 1176 case 'o': 1177 /* 1178 * Process the set of columns to display. We zero out 1179 * the structure to give us a blank slate. 1180 */ 1181 bzero(&cb.cb_columns, sizeof (cb.cb_columns)); 1182 i = 0; 1183 while (*optarg != '\0') { 1184 static char *col_subopts[] = 1185 { "name", "property", "value", "source", 1186 NULL }; 1187 1188 if (i == 4) { 1189 (void) fprintf(stderr, gettext("too " 1190 "many fields given to -o " 1191 "option\n")); 1192 usage(B_FALSE); 1193 } 1194 1195 switch (getsubopt(&optarg, col_subopts, 1196 &value)) { 1197 case 0: 1198 cb.cb_columns[i++] = GET_COL_NAME; 1199 break; 1200 case 1: 1201 cb.cb_columns[i++] = GET_COL_PROPERTY; 1202 break; 1203 case 2: 1204 cb.cb_columns[i++] = GET_COL_VALUE; 1205 break; 1206 case 3: 1207 cb.cb_columns[i++] = GET_COL_SOURCE; 1208 break; 1209 default: 1210 (void) fprintf(stderr, 1211 gettext("invalid column name " 1212 "'%s'\n"), value); 1213 usage(B_FALSE); 1214 } 1215 } 1216 break; 1217 1218 case 's': 1219 cb.cb_sources = 0; 1220 while (*optarg != '\0') { 1221 static char *source_subopts[] = { 1222 "local", "default", "inherited", 1223 "temporary", "none", NULL }; 1224 1225 switch (getsubopt(&optarg, source_subopts, 1226 &value)) { 1227 case 0: 1228 cb.cb_sources |= ZPROP_SRC_LOCAL; 1229 break; 1230 case 1: 1231 cb.cb_sources |= ZPROP_SRC_DEFAULT; 1232 break; 1233 case 2: 1234 cb.cb_sources |= ZPROP_SRC_INHERITED; 1235 break; 1236 case 3: 1237 cb.cb_sources |= ZPROP_SRC_TEMPORARY; 1238 break; 1239 case 4: 1240 cb.cb_sources |= ZPROP_SRC_NONE; 1241 break; 1242 default: 1243 (void) fprintf(stderr, 1244 gettext("invalid source " 1245 "'%s'\n"), value); 1246 usage(B_FALSE); 1247 } 1248 } 1249 break; 1250 1251 case '?': 1252 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1253 optopt); 1254 usage(B_FALSE); 1255 } 1256 } 1257 1258 argc -= optind; 1259 argv += optind; 1260 1261 if (argc < 1) { 1262 (void) fprintf(stderr, gettext("missing property " 1263 "argument\n")); 1264 usage(B_FALSE); 1265 } 1266 1267 fields = argv[0]; 1268 1269 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1270 != 0) 1271 usage(B_FALSE); 1272 1273 argc--; 1274 argv++; 1275 1276 /* 1277 * As part of zfs_expand_proplist(), we keep track of the maximum column 1278 * width for each property. For the 'NAME' (and 'SOURCE') columns, we 1279 * need to know the maximum name length. However, the user likely did 1280 * not specify 'name' as one of the properties to fetch, so we need to 1281 * make sure we always include at least this property for 1282 * print_get_headers() to work properly. 1283 */ 1284 if (cb.cb_proplist != NULL) { 1285 fake_name.pl_prop = ZFS_PROP_NAME; 1286 fake_name.pl_width = strlen(gettext("NAME")); 1287 fake_name.pl_next = cb.cb_proplist; 1288 cb.cb_proplist = &fake_name; 1289 } 1290 1291 cb.cb_first = B_TRUE; 1292 1293 /* run for each object */ 1294 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, NULL,
|
1270 &cb.cb_proplist, get_callback, &cb);
|
1295 &cb.cb_proplist, limit, get_callback, &cb); |
1296 1297 if (cb.cb_proplist == &fake_name) 1298 zprop_free_list(fake_name.pl_next); 1299 else 1300 zprop_free_list(cb.cb_proplist); 1301 1302 return (ret); 1303} 1304 1305/* 1306 * inherit [-r] <property> <fs|vol> ... 1307 * 1308 * -r Recurse over all children 1309 * 1310 * For each dataset specified on the command line, inherit the given property 1311 * from its parent. Inheriting a property at the pool level will cause it to 1312 * use the default value. The '-r' flag will recurse over all children, and is 1313 * useful for setting a property on a hierarchy-wide basis, regardless of any 1314 * local modifications for each dataset. 1315 */ 1316 1317static int 1318inherit_recurse_cb(zfs_handle_t *zhp, void *data) 1319{ 1320 char *propname = data; 1321 zfs_prop_t prop = zfs_name_to_prop(propname); 1322 1323 /* 1324 * If we're doing it recursively, then ignore properties that 1325 * are not valid for this type of dataset. 1326 */ 1327 if (prop != ZPROP_INVAL && 1328 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp))) 1329 return (0); 1330 1331 return (zfs_prop_inherit(zhp, propname) != 0); 1332} 1333 1334static int 1335inherit_cb(zfs_handle_t *zhp, void *data) 1336{ 1337 char *propname = data; 1338 1339 return (zfs_prop_inherit(zhp, propname) != 0); 1340} 1341 1342static int 1343zfs_do_inherit(int argc, char **argv) 1344{ 1345 int c; 1346 zfs_prop_t prop; 1347 char *propname; 1348 int ret; 1349 int flags = 0; 1350 1351 /* check options */ 1352 while ((c = getopt(argc, argv, "r")) != -1) { 1353 switch (c) { 1354 case 'r': 1355 flags |= ZFS_ITER_RECURSE; 1356 break; 1357 case '?': 1358 default: 1359 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1360 optopt); 1361 usage(B_FALSE); 1362 } 1363 } 1364 1365 argc -= optind; 1366 argv += optind; 1367 1368 /* check number of arguments */ 1369 if (argc < 1) { 1370 (void) fprintf(stderr, gettext("missing property argument\n")); 1371 usage(B_FALSE); 1372 } 1373 if (argc < 2) { 1374 (void) fprintf(stderr, gettext("missing dataset argument\n")); 1375 usage(B_FALSE); 1376 } 1377 1378 propname = argv[0]; 1379 argc--; 1380 argv++; 1381 1382 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) { 1383 if (zfs_prop_readonly(prop)) { 1384 (void) fprintf(stderr, gettext( 1385 "%s property is read-only\n"), 1386 propname); 1387 return (1); 1388 } 1389 if (!zfs_prop_inheritable(prop)) { 1390 (void) fprintf(stderr, gettext("'%s' property cannot " 1391 "be inherited\n"), propname); 1392 if (prop == ZFS_PROP_QUOTA || 1393 prop == ZFS_PROP_RESERVATION || 1394 prop == ZFS_PROP_REFQUOTA || 1395 prop == ZFS_PROP_REFRESERVATION) 1396 (void) fprintf(stderr, gettext("use 'zfs set " 1397 "%s=none' to clear\n"), propname); 1398 return (1); 1399 } 1400 } else if (!zfs_prop_user(propname)) { 1401 (void) fprintf(stderr, gettext("invalid property '%s'\n"), 1402 propname); 1403 usage(B_FALSE); 1404 } 1405 1406 if (flags & ZFS_ITER_RECURSE) { 1407 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
|
1383 NULL, NULL, inherit_recurse_cb, propname);
|
1408 NULL, NULL, 0, inherit_recurse_cb, propname); |
1409 } else { 1410 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
|
1386 NULL, NULL, inherit_cb, propname);
|
1411 NULL, NULL, 0, inherit_cb, propname); |
1412 } 1413 1414 return (ret); 1415} 1416 1417typedef struct upgrade_cbdata { 1418 uint64_t cb_numupgraded; 1419 uint64_t cb_numsamegraded; 1420 uint64_t cb_numfailed; 1421 uint64_t cb_version; 1422 boolean_t cb_newer; 1423 boolean_t cb_foundone; 1424 char cb_lastfs[ZFS_MAXNAMELEN]; 1425} upgrade_cbdata_t; 1426 1427static int 1428same_pool(zfs_handle_t *zhp, const char *name) 1429{ 1430 int len1 = strcspn(name, "/@"); 1431 const char *zhname = zfs_get_name(zhp); 1432 int len2 = strcspn(zhname, "/@"); 1433 1434 if (len1 != len2) 1435 return (B_FALSE); 1436 return (strncmp(name, zhname, len1) == 0); 1437} 1438 1439static int 1440upgrade_list_callback(zfs_handle_t *zhp, void *data) 1441{ 1442 upgrade_cbdata_t *cb = data; 1443 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1444 1445 /* list if it's old/new */ 1446 if ((!cb->cb_newer && version < ZPL_VERSION) || 1447 (cb->cb_newer && version > ZPL_VERSION)) { 1448 char *str; 1449 if (cb->cb_newer) { 1450 str = gettext("The following filesystems are " 1451 "formatted using a newer software version and\n" 1452 "cannot be accessed on the current system.\n\n"); 1453 } else { 1454 str = gettext("The following filesystems are " 1455 "out of date, and can be upgraded. After being\n" 1456 "upgraded, these filesystems (and any 'zfs send' " 1457 "streams generated from\n" 1458 "subsequent snapshots) will no longer be " 1459 "accessible by older software versions.\n\n"); 1460 } 1461 1462 if (!cb->cb_foundone) { 1463 (void) puts(str); 1464 (void) printf(gettext("VER FILESYSTEM\n")); 1465 (void) printf(gettext("--- ------------\n")); 1466 cb->cb_foundone = B_TRUE; 1467 } 1468 1469 (void) printf("%2u %s\n", version, zfs_get_name(zhp)); 1470 } 1471 1472 return (0); 1473} 1474 1475static int 1476upgrade_set_callback(zfs_handle_t *zhp, void *data) 1477{ 1478 upgrade_cbdata_t *cb = data; 1479 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1480 1481 if (cb->cb_version >= ZPL_VERSION_FUID) { 1482 int spa_version; 1483 1484 if (zfs_spa_version(zhp, &spa_version) < 0) 1485 return (-1); 1486 1487 if (spa_version < SPA_VERSION_FUID) { 1488 /* can't upgrade */ 1489 (void) printf(gettext("%s: can not be upgraded; " 1490 "the pool version needs to first be upgraded\nto " 1491 "version %d\n\n"), 1492 zfs_get_name(zhp), SPA_VERSION_FUID); 1493 cb->cb_numfailed++; 1494 return (0); 1495 } 1496 } 1497 1498 /* upgrade */ 1499 if (version < cb->cb_version) { 1500 char verstr[16]; 1501 (void) snprintf(verstr, sizeof (verstr), 1502 "%llu", cb->cb_version); 1503 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) { 1504 /* 1505 * If they did "zfs upgrade -a", then we could 1506 * be doing ioctls to different pools. We need 1507 * to log this history once to each pool. 1508 */ 1509 verify(zpool_stage_history(g_zfs, history_str) == 0); 1510 } 1511 if (zfs_prop_set(zhp, "version", verstr) == 0) 1512 cb->cb_numupgraded++; 1513 else 1514 cb->cb_numfailed++; 1515 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp)); 1516 } else if (version > cb->cb_version) { 1517 /* can't downgrade */ 1518 (void) printf(gettext("%s: can not be downgraded; " 1519 "it is already at version %u\n"), 1520 zfs_get_name(zhp), version); 1521 cb->cb_numfailed++; 1522 } else { 1523 cb->cb_numsamegraded++; 1524 } 1525 return (0); 1526} 1527 1528/* 1529 * zfs upgrade 1530 * zfs upgrade -v 1531 * zfs upgrade [-r] [-V <version>] <-a | filesystem> 1532 */ 1533static int 1534zfs_do_upgrade(int argc, char **argv) 1535{ 1536 boolean_t all = B_FALSE; 1537 boolean_t showversions = B_FALSE; 1538 int ret; 1539 upgrade_cbdata_t cb = { 0 }; 1540 char c; 1541 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS; 1542 1543 /* check options */ 1544 while ((c = getopt(argc, argv, "rvV:a")) != -1) { 1545 switch (c) { 1546 case 'r': 1547 flags |= ZFS_ITER_RECURSE; 1548 break; 1549 case 'v': 1550 showversions = B_TRUE; 1551 break; 1552 case 'V': 1553 if (zfs_prop_string_to_index(ZFS_PROP_VERSION, 1554 optarg, &cb.cb_version) != 0) { 1555 (void) fprintf(stderr, 1556 gettext("invalid version %s\n"), optarg); 1557 usage(B_FALSE); 1558 } 1559 break; 1560 case 'a': 1561 all = B_TRUE; 1562 break; 1563 case '?': 1564 default: 1565 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1566 optopt); 1567 usage(B_FALSE); 1568 } 1569 } 1570 1571 argc -= optind; 1572 argv += optind; 1573 1574 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version)) 1575 usage(B_FALSE); 1576 if (showversions && (flags & ZFS_ITER_RECURSE || all || 1577 cb.cb_version || argc)) 1578 usage(B_FALSE); 1579 if ((all || argc) && (showversions)) 1580 usage(B_FALSE); 1581 if (all && argc) 1582 usage(B_FALSE); 1583 1584 if (showversions) { 1585 /* Show info on available versions. */ 1586 (void) printf(gettext("The following filesystem versions are " 1587 "supported:\n\n")); 1588 (void) printf(gettext("VER DESCRIPTION\n")); 1589 (void) printf("--- -----------------------------------------" 1590 "---------------\n"); 1591 (void) printf(gettext(" 1 Initial ZFS filesystem version\n")); 1592 (void) printf(gettext(" 2 Enhanced directory entries\n")); 1593 (void) printf(gettext(" 3 Case insensitive and File system " 1594 "unique identifer (FUID)\n")); 1595 (void) printf(gettext("\nFor more information on a particular " 1596 "version, including supported releases, see:\n\n")); 1597 (void) printf("http://www.opensolaris.org/os/community/zfs/" 1598 "version/zpl/N\n\n"); 1599 (void) printf(gettext("Where 'N' is the version number.\n")); 1600 ret = 0; 1601 } else if (argc || all) { 1602 /* Upgrade filesystems */ 1603 if (cb.cb_version == 0) 1604 cb.cb_version = ZPL_VERSION; 1605 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
|
1581 NULL, NULL, upgrade_set_callback, &cb);
|
1606 NULL, NULL, 0, upgrade_set_callback, &cb); |
1607 (void) printf(gettext("%llu filesystems upgraded\n"), 1608 cb.cb_numupgraded); 1609 if (cb.cb_numsamegraded) { 1610 (void) printf(gettext("%llu filesystems already at " 1611 "this version\n"), 1612 cb.cb_numsamegraded); 1613 } 1614 if (cb.cb_numfailed != 0) 1615 ret = 1; 1616 } else { 1617 /* List old-version filesytems */ 1618 boolean_t found; 1619 (void) printf(gettext("This system is currently running " 1620 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION); 1621 1622 flags |= ZFS_ITER_RECURSE; 1623 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
|
1599 NULL, NULL, upgrade_list_callback, &cb);
|
1624 NULL, NULL, 0, upgrade_list_callback, &cb); |
1625 1626 found = cb.cb_foundone; 1627 cb.cb_foundone = B_FALSE; 1628 cb.cb_newer = B_TRUE; 1629 1630 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
|
1606 NULL, NULL, upgrade_list_callback, &cb);
|
1631 NULL, NULL, 0, upgrade_list_callback, &cb); |
1632 1633 if (!cb.cb_foundone && !found) { 1634 (void) printf(gettext("All filesystems are " 1635 "formatted with the current version.\n")); 1636 } 1637 } 1638 1639 return (ret); 1640} 1641 1642/*
|
1618 * list [-rH] [-o property[,property]...] [-t type[,type]...]
|
1643 * list [-r][-d max] [-H] [-o property[,property]...] [-t type[,type]...] |
1644 * [-s property [-s property]...] [-S property [-S property]...] 1645 * <dataset> ... 1646 * 1647 * -r Recurse over all children
|
1648 * -d Limit recursion by depth. |
1649 * -H Scripted mode; elide headers and separate columns by tabs 1650 * -o Control which fields to display. 1651 * -t Control which object types to display. 1652 * -s Specify sort columns, descending order. 1653 * -S Specify sort columns, ascending order. 1654 * 1655 * When given no arguments, lists all filesystems in the system. 1656 * Otherwise, list the specified datasets, optionally recursing down them if 1657 * '-r' is specified. 1658 */ 1659typedef struct list_cbdata { 1660 boolean_t cb_first; 1661 boolean_t cb_scripted; 1662 zprop_list_t *cb_proplist; 1663} list_cbdata_t; 1664 1665/* 1666 * Given a list of columns to display, output appropriate headers for each one. 1667 */ 1668static void 1669print_header(zprop_list_t *pl) 1670{ 1671 char headerbuf[ZFS_MAXPROPLEN]; 1672 const char *header; 1673 int i; 1674 boolean_t first = B_TRUE; 1675 boolean_t right_justify; 1676 1677 for (; pl != NULL; pl = pl->pl_next) { 1678 if (!first) { 1679 (void) printf(" "); 1680 } else { 1681 first = B_FALSE; 1682 } 1683 1684 right_justify = B_FALSE; 1685 if (pl->pl_prop != ZPROP_INVAL) { 1686 header = zfs_prop_column_name(pl->pl_prop); 1687 right_justify = zfs_prop_align_right(pl->pl_prop); 1688 } else { 1689 for (i = 0; pl->pl_user_prop[i] != '\0'; i++) 1690 headerbuf[i] = toupper(pl->pl_user_prop[i]); 1691 headerbuf[i] = '\0'; 1692 header = headerbuf; 1693 } 1694 1695 if (pl->pl_next == NULL && !right_justify) 1696 (void) printf("%s", header); 1697 else if (right_justify) 1698 (void) printf("%*s", pl->pl_width, header); 1699 else 1700 (void) printf("%-*s", pl->pl_width, header); 1701 } 1702 1703 (void) printf("\n"); 1704} 1705 1706/* 1707 * Given a dataset and a list of fields, print out all the properties according 1708 * to the described layout. 1709 */ 1710static void 1711print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted) 1712{ 1713 boolean_t first = B_TRUE; 1714 char property[ZFS_MAXPROPLEN]; 1715 nvlist_t *userprops = zfs_get_user_props(zhp); 1716 nvlist_t *propval; 1717 char *propstr; 1718 boolean_t right_justify; 1719 int width; 1720 1721 for (; pl != NULL; pl = pl->pl_next) { 1722 if (!first) { 1723 if (scripted) 1724 (void) printf("\t"); 1725 else 1726 (void) printf(" "); 1727 } else { 1728 first = B_FALSE; 1729 } 1730 1731 right_justify = B_FALSE; 1732 if (pl->pl_prop != ZPROP_INVAL) { 1733 if (zfs_prop_get(zhp, pl->pl_prop, property, 1734 sizeof (property), NULL, NULL, 0, B_FALSE) != 0) 1735 propstr = "-"; 1736 else 1737 propstr = property; 1738 1739 right_justify = zfs_prop_align_right(pl->pl_prop); 1740 } else { 1741 if (nvlist_lookup_nvlist(userprops, 1742 pl->pl_user_prop, &propval) != 0) 1743 propstr = "-"; 1744 else 1745 verify(nvlist_lookup_string(propval, 1746 ZPROP_VALUE, &propstr) == 0); 1747 } 1748 1749 width = pl->pl_width; 1750 1751 /* 1752 * If this is being called in scripted mode, or if this is the 1753 * last column and it is left-justified, don't include a width 1754 * format specifier. 1755 */ 1756 if (scripted || (pl->pl_next == NULL && !right_justify)) 1757 (void) printf("%s", propstr); 1758 else if (right_justify) 1759 (void) printf("%*s", width, propstr); 1760 else 1761 (void) printf("%-*s", width, propstr); 1762 } 1763 1764 (void) printf("\n"); 1765} 1766 1767/* 1768 * Generic callback function to list a dataset or snapshot. 1769 */ 1770static int 1771list_callback(zfs_handle_t *zhp, void *data) 1772{ 1773 list_cbdata_t *cbp = data; 1774 1775 if (cbp->cb_first) { 1776 if (!cbp->cb_scripted) 1777 print_header(cbp->cb_proplist); 1778 cbp->cb_first = B_FALSE; 1779 } 1780 1781 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted); 1782 1783 return (0); 1784} 1785 1786static int 1787zfs_do_list(int argc, char **argv) 1788{ 1789 int c; 1790 boolean_t scripted = B_FALSE; 1791 static char default_fields[] = 1792 "name,used,available,referenced,mountpoint"; 1793 int types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME; 1794 boolean_t types_specified = B_FALSE; 1795 char *fields = NULL; 1796 list_cbdata_t cb = { 0 }; 1797 char *value;
|
1798 int limit = 0; |
1799 int ret; 1800 zfs_sort_column_t *sortcol = NULL; 1801 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS; 1802 1803 /* check options */
|
1777 while ((c = getopt(argc, argv, ":o:rt:Hs:S:")) != -1) {
|
1804 while ((c = getopt(argc, argv, ":d:o:rt:Hs:S:")) != -1) { |
1805 switch (c) { 1806 case 'o': 1807 fields = optarg; 1808 break;
|
1809 case 'd': 1810 limit = parse_depth(optarg, &flags); 1811 break; |
1812 case 'r': 1813 flags |= ZFS_ITER_RECURSE; 1814 break; 1815 case 'H': 1816 scripted = B_TRUE; 1817 break; 1818 case 's': 1819 if (zfs_add_sort_column(&sortcol, optarg, 1820 B_FALSE) != 0) { 1821 (void) fprintf(stderr, 1822 gettext("invalid property '%s'\n"), optarg); 1823 usage(B_FALSE); 1824 } 1825 break; 1826 case 'S': 1827 if (zfs_add_sort_column(&sortcol, optarg, 1828 B_TRUE) != 0) { 1829 (void) fprintf(stderr, 1830 gettext("invalid property '%s'\n"), optarg); 1831 usage(B_FALSE); 1832 } 1833 break; 1834 case 't': 1835 types = 0; 1836 types_specified = B_TRUE; 1837 flags &= ~ZFS_ITER_PROP_LISTSNAPS; 1838 while (*optarg != '\0') { 1839 static char *type_subopts[] = { "filesystem", 1840 "volume", "snapshot", "all", NULL }; 1841 1842 switch (getsubopt(&optarg, type_subopts, 1843 &value)) { 1844 case 0: 1845 types |= ZFS_TYPE_FILESYSTEM; 1846 break; 1847 case 1: 1848 types |= ZFS_TYPE_VOLUME; 1849 break; 1850 case 2: 1851 types |= ZFS_TYPE_SNAPSHOT; 1852 break; 1853 case 3: 1854 types = ZFS_TYPE_DATASET; 1855 break; 1856 1857 default: 1858 (void) fprintf(stderr, 1859 gettext("invalid type '%s'\n"), 1860 value); 1861 usage(B_FALSE); 1862 } 1863 } 1864 break; 1865 case ':': 1866 (void) fprintf(stderr, gettext("missing argument for " 1867 "'%c' option\n"), optopt); 1868 usage(B_FALSE); 1869 break; 1870 case '?': 1871 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1872 optopt); 1873 usage(B_FALSE); 1874 } 1875 } 1876 1877 argc -= optind; 1878 argv += optind; 1879 1880 if (fields == NULL) 1881 fields = default_fields; 1882 1883 /* 1884 * If "-o space" and no types were specified, don't display snapshots. 1885 */ 1886 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE) 1887 types &= ~ZFS_TYPE_SNAPSHOT; 1888 1889 /* 1890 * If the user specifies '-o all', the zprop_get_list() doesn't 1891 * normally include the name of the dataset. For 'zfs list', we always 1892 * want this property to be first. 1893 */ 1894 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1895 != 0) 1896 usage(B_FALSE); 1897 1898 cb.cb_scripted = scripted; 1899 cb.cb_first = B_TRUE; 1900 1901 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
|
1872 list_callback, &cb);
|
1902 limit, list_callback, &cb); |
1903 1904 zprop_free_list(cb.cb_proplist); 1905 zfs_free_sort_columns(sortcol); 1906 1907 if (ret == 0 && cb.cb_first && !cb.cb_scripted) 1908 (void) printf(gettext("no datasets available\n")); 1909 1910 return (ret); 1911} 1912 1913/* 1914 * zfs rename <fs | snap | vol> <fs | snap | vol> 1915 * zfs rename -p <fs | vol> <fs | vol> 1916 * zfs rename -r <snap> <snap> 1917 * 1918 * Renames the given dataset to another of the same type. 1919 * 1920 * The '-p' flag creates all the non-existing ancestors of the target first. 1921 */ 1922/* ARGSUSED */ 1923static int 1924zfs_do_rename(int argc, char **argv) 1925{ 1926 zfs_handle_t *zhp; 1927 int c; 1928 int ret; 1929 boolean_t recurse = B_FALSE; 1930 boolean_t parents = B_FALSE; 1931 1932 /* check options */ 1933 while ((c = getopt(argc, argv, "pr")) != -1) { 1934 switch (c) { 1935 case 'p': 1936 parents = B_TRUE; 1937 break; 1938 case 'r': 1939 recurse = B_TRUE; 1940 break; 1941 case '?': 1942 default: 1943 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1944 optopt); 1945 usage(B_FALSE); 1946 } 1947 } 1948 1949 argc -= optind; 1950 argv += optind; 1951 1952 /* check number of arguments */ 1953 if (argc < 1) { 1954 (void) fprintf(stderr, gettext("missing source dataset " 1955 "argument\n")); 1956 usage(B_FALSE); 1957 } 1958 if (argc < 2) { 1959 (void) fprintf(stderr, gettext("missing target dataset " 1960 "argument\n")); 1961 usage(B_FALSE); 1962 } 1963 if (argc > 2) { 1964 (void) fprintf(stderr, gettext("too many arguments\n")); 1965 usage(B_FALSE); 1966 } 1967 1968 if (recurse && parents) { 1969 (void) fprintf(stderr, gettext("-p and -r options are mutually " 1970 "exclusive\n")); 1971 usage(B_FALSE); 1972 } 1973 1974 if (recurse && strchr(argv[0], '@') == 0) { 1975 (void) fprintf(stderr, gettext("source dataset for recursive " 1976 "rename must be a snapshot\n")); 1977 usage(B_FALSE); 1978 } 1979 1980 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM | 1981 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL) 1982 return (1); 1983 1984 /* If we were asked and the name looks good, try to create ancestors. */ 1985 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) && 1986 zfs_create_ancestors(g_zfs, argv[1]) != 0) { 1987 zfs_close(zhp); 1988 return (1); 1989 } 1990 1991 ret = (zfs_rename(zhp, argv[1], recurse) != 0); 1992 1993 zfs_close(zhp); 1994 return (ret); 1995} 1996 1997/* 1998 * zfs promote <fs> 1999 * 2000 * Promotes the given clone fs to be the parent 2001 */ 2002/* ARGSUSED */ 2003static int 2004zfs_do_promote(int argc, char **argv) 2005{ 2006 zfs_handle_t *zhp; 2007 int ret; 2008 2009 /* check options */ 2010 if (argc > 1 && argv[1][0] == '-') { 2011 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2012 argv[1][1]); 2013 usage(B_FALSE); 2014 } 2015 2016 /* check number of arguments */ 2017 if (argc < 2) { 2018 (void) fprintf(stderr, gettext("missing clone filesystem" 2019 " argument\n")); 2020 usage(B_FALSE); 2021 } 2022 if (argc > 2) { 2023 (void) fprintf(stderr, gettext("too many arguments\n")); 2024 usage(B_FALSE); 2025 } 2026 2027 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2028 if (zhp == NULL) 2029 return (1); 2030 2031 ret = (zfs_promote(zhp) != 0); 2032 2033 2034 zfs_close(zhp); 2035 return (ret); 2036} 2037 2038/* 2039 * zfs rollback [-rRf] <snapshot> 2040 * 2041 * -r Delete any intervening snapshots before doing rollback 2042 * -R Delete any snapshots and their clones 2043 * -f ignored for backwards compatability 2044 * 2045 * Given a filesystem, rollback to a specific snapshot, discarding any changes 2046 * since then and making it the active dataset. If more recent snapshots exist, 2047 * the command will complain unless the '-r' flag is given. 2048 */ 2049typedef struct rollback_cbdata { 2050 uint64_t cb_create; 2051 boolean_t cb_first; 2052 int cb_doclones; 2053 char *cb_target; 2054 int cb_error; 2055 boolean_t cb_recurse; 2056 boolean_t cb_dependent; 2057} rollback_cbdata_t; 2058 2059/* 2060 * Report any snapshots more recent than the one specified. Used when '-r' is 2061 * not specified. We reuse this same callback for the snapshot dependents - if 2062 * 'cb_dependent' is set, then this is a dependent and we should report it 2063 * without checking the transaction group. 2064 */ 2065static int 2066rollback_check(zfs_handle_t *zhp, void *data) 2067{ 2068 rollback_cbdata_t *cbp = data; 2069 2070 if (cbp->cb_doclones) { 2071 zfs_close(zhp); 2072 return (0); 2073 } 2074 2075 if (!cbp->cb_dependent) { 2076 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 && 2077 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && 2078 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > 2079 cbp->cb_create) { 2080 2081 if (cbp->cb_first && !cbp->cb_recurse) { 2082 (void) fprintf(stderr, gettext("cannot " 2083 "rollback to '%s': more recent snapshots " 2084 "exist\n"), 2085 cbp->cb_target); 2086 (void) fprintf(stderr, gettext("use '-r' to " 2087 "force deletion of the following " 2088 "snapshots:\n")); 2089 cbp->cb_first = 0; 2090 cbp->cb_error = 1; 2091 } 2092 2093 if (cbp->cb_recurse) { 2094 cbp->cb_dependent = B_TRUE; 2095 if (zfs_iter_dependents(zhp, B_TRUE, 2096 rollback_check, cbp) != 0) { 2097 zfs_close(zhp); 2098 return (-1); 2099 } 2100 cbp->cb_dependent = B_FALSE; 2101 } else { 2102 (void) fprintf(stderr, "%s\n", 2103 zfs_get_name(zhp)); 2104 } 2105 } 2106 } else { 2107 if (cbp->cb_first && cbp->cb_recurse) { 2108 (void) fprintf(stderr, gettext("cannot rollback to " 2109 "'%s': clones of previous snapshots exist\n"), 2110 cbp->cb_target); 2111 (void) fprintf(stderr, gettext("use '-R' to " 2112 "force deletion of the following clones and " 2113 "dependents:\n")); 2114 cbp->cb_first = 0; 2115 cbp->cb_error = 1; 2116 } 2117 2118 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 2119 } 2120 2121 zfs_close(zhp); 2122 return (0); 2123} 2124 2125static int 2126zfs_do_rollback(int argc, char **argv) 2127{ 2128 int ret; 2129 int c; 2130 boolean_t force = B_FALSE; 2131 rollback_cbdata_t cb = { 0 }; 2132 zfs_handle_t *zhp, *snap; 2133 char parentname[ZFS_MAXNAMELEN]; 2134 char *delim; 2135 2136 /* check options */ 2137 while ((c = getopt(argc, argv, "rRf")) != -1) { 2138 switch (c) { 2139 case 'r': 2140 cb.cb_recurse = 1; 2141 break; 2142 case 'R': 2143 cb.cb_recurse = 1; 2144 cb.cb_doclones = 1; 2145 break; 2146 case 'f': 2147 force = B_TRUE; 2148 break; 2149 case '?': 2150 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2151 optopt); 2152 usage(B_FALSE); 2153 } 2154 } 2155 2156 argc -= optind; 2157 argv += optind; 2158 2159 /* check number of arguments */ 2160 if (argc < 1) { 2161 (void) fprintf(stderr, gettext("missing dataset argument\n")); 2162 usage(B_FALSE); 2163 } 2164 if (argc > 1) { 2165 (void) fprintf(stderr, gettext("too many arguments\n")); 2166 usage(B_FALSE); 2167 } 2168 2169 /* open the snapshot */ 2170 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 2171 return (1); 2172 2173 /* open the parent dataset */ 2174 (void) strlcpy(parentname, argv[0], sizeof (parentname)); 2175 verify((delim = strrchr(parentname, '@')) != NULL); 2176 *delim = '\0'; 2177 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) { 2178 zfs_close(snap); 2179 return (1); 2180 } 2181 2182 /* 2183 * Check for more recent snapshots and/or clones based on the presence 2184 * of '-r' and '-R'. 2185 */ 2186 cb.cb_target = argv[0]; 2187 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 2188 cb.cb_first = B_TRUE; 2189 cb.cb_error = 0; 2190 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0) 2191 goto out; 2192 2193 if ((ret = cb.cb_error) != 0) 2194 goto out; 2195 2196 /* 2197 * Rollback parent to the given snapshot. 2198 */ 2199 ret = zfs_rollback(zhp, snap, force); 2200 2201out: 2202 zfs_close(snap); 2203 zfs_close(zhp); 2204 2205 if (ret == 0) 2206 return (0); 2207 else 2208 return (1); 2209} 2210 2211/* 2212 * zfs set property=value { fs | snap | vol } ... 2213 * 2214 * Sets the given property for all datasets specified on the command line. 2215 */ 2216typedef struct set_cbdata { 2217 char *cb_propname; 2218 char *cb_value; 2219} set_cbdata_t; 2220 2221static int 2222set_callback(zfs_handle_t *zhp, void *data) 2223{ 2224 set_cbdata_t *cbp = data; 2225 2226 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) { 2227 switch (libzfs_errno(g_zfs)) { 2228 case EZFS_MOUNTFAILED: 2229 (void) fprintf(stderr, gettext("property may be set " 2230 "but unable to remount filesystem\n")); 2231 break; 2232 case EZFS_SHARENFSFAILED: 2233 (void) fprintf(stderr, gettext("property may be set " 2234 "but unable to reshare filesystem\n")); 2235 break; 2236 } 2237 return (1); 2238 } 2239 return (0); 2240} 2241 2242static int 2243zfs_do_set(int argc, char **argv) 2244{ 2245 set_cbdata_t cb; 2246 int ret; 2247 2248 /* check for options */ 2249 if (argc > 1 && argv[1][0] == '-') { 2250 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2251 argv[1][1]); 2252 usage(B_FALSE); 2253 } 2254 2255 /* check number of arguments */ 2256 if (argc < 2) { 2257 (void) fprintf(stderr, gettext("missing property=value " 2258 "argument\n")); 2259 usage(B_FALSE); 2260 } 2261 if (argc < 3) { 2262 (void) fprintf(stderr, gettext("missing dataset name\n")); 2263 usage(B_FALSE); 2264 } 2265 2266 /* validate property=value argument */ 2267 cb.cb_propname = argv[1]; 2268 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) || 2269 (cb.cb_value[1] == '\0')) { 2270 (void) fprintf(stderr, gettext("missing value in " 2271 "property=value argument\n")); 2272 usage(B_FALSE); 2273 } 2274 2275 *cb.cb_value = '\0'; 2276 cb.cb_value++; 2277 2278 if (*cb.cb_propname == '\0') { 2279 (void) fprintf(stderr, 2280 gettext("missing property in property=value argument\n")); 2281 usage(B_FALSE); 2282 } 2283 2284 ret = zfs_for_each(argc - 2, argv + 2, NULL,
|
2255 ZFS_TYPE_DATASET, NULL, NULL, set_callback, &cb);
|
2285 ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, &cb); |
2286 2287 return (ret); 2288} 2289 2290/* 2291 * zfs snapshot [-r] [-o prop=value] ... <fs@snap> 2292 * 2293 * Creates a snapshot with the given name. While functionally equivalent to 2294 * 'zfs create', it is a separate command to differentiate intent. 2295 */ 2296static int 2297zfs_do_snapshot(int argc, char **argv) 2298{ 2299 boolean_t recursive = B_FALSE; 2300 int ret; 2301 char c; 2302 nvlist_t *props; 2303 2304 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 2305 (void) fprintf(stderr, gettext("internal error: " 2306 "out of memory\n")); 2307 return (1); 2308 } 2309 2310 /* check options */ 2311 while ((c = getopt(argc, argv, "ro:")) != -1) { 2312 switch (c) { 2313 case 'o': 2314 if (parseprop(props)) 2315 return (1); 2316 break; 2317 case 'r': 2318 recursive = B_TRUE; 2319 break; 2320 case '?': 2321 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2322 optopt); 2323 goto usage; 2324 } 2325 } 2326 2327 argc -= optind; 2328 argv += optind; 2329 2330 /* check number of arguments */ 2331 if (argc < 1) { 2332 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2333 goto usage; 2334 } 2335 if (argc > 1) { 2336 (void) fprintf(stderr, gettext("too many arguments\n")); 2337 goto usage; 2338 } 2339 2340 ret = zfs_snapshot(g_zfs, argv[0], recursive, props); 2341 nvlist_free(props); 2342 if (ret && recursive) 2343 (void) fprintf(stderr, gettext("no snapshots were created\n")); 2344 return (ret != 0); 2345 2346usage: 2347 nvlist_free(props); 2348 usage(B_FALSE); 2349 return (-1); 2350} 2351 2352/* 2353 * zfs send [-v] -R [-i|-I <@snap>] <fs@snap> 2354 * zfs send [-v] [-i|-I <@snap>] <fs@snap> 2355 * 2356 * Send a backup stream to stdout. 2357 */ 2358static int 2359zfs_do_send(int argc, char **argv) 2360{ 2361 char *fromname = NULL; 2362 char *toname = NULL; 2363 char *cp; 2364 zfs_handle_t *zhp; 2365 boolean_t doall = B_FALSE; 2366 boolean_t replicate = B_FALSE; 2367 boolean_t fromorigin = B_FALSE; 2368 boolean_t verbose = B_FALSE; 2369 int c, err; 2370 2371 /* check options */ 2372 while ((c = getopt(argc, argv, ":i:I:Rv")) != -1) { 2373 switch (c) { 2374 case 'i': 2375 if (fromname) 2376 usage(B_FALSE); 2377 fromname = optarg; 2378 break; 2379 case 'I': 2380 if (fromname) 2381 usage(B_FALSE); 2382 fromname = optarg; 2383 doall = B_TRUE; 2384 break; 2385 case 'R': 2386 replicate = B_TRUE; 2387 break; 2388 case 'v': 2389 verbose = B_TRUE; 2390 break; 2391 case ':': 2392 (void) fprintf(stderr, gettext("missing argument for " 2393 "'%c' option\n"), optopt); 2394 usage(B_FALSE); 2395 break; 2396 case '?': 2397 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2398 optopt); 2399 usage(B_FALSE); 2400 } 2401 } 2402 2403 argc -= optind; 2404 argv += optind; 2405 2406 /* check number of arguments */ 2407 if (argc < 1) { 2408 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2409 usage(B_FALSE); 2410 } 2411 if (argc > 1) { 2412 (void) fprintf(stderr, gettext("too many arguments\n")); 2413 usage(B_FALSE); 2414 } 2415 2416 if (isatty(STDOUT_FILENO)) { 2417 (void) fprintf(stderr, 2418 gettext("Error: Stream can not be written to a terminal.\n" 2419 "You must redirect standard output.\n")); 2420 return (1); 2421 } 2422 2423 cp = strchr(argv[0], '@'); 2424 if (cp == NULL) { 2425 (void) fprintf(stderr, 2426 gettext("argument must be a snapshot\n")); 2427 usage(B_FALSE); 2428 } 2429 *cp = '\0'; 2430 toname = cp + 1; 2431 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2432 if (zhp == NULL) 2433 return (1); 2434 2435 /* 2436 * If they specified the full path to the snapshot, chop off 2437 * everything except the short name of the snapshot, but special 2438 * case if they specify the origin. 2439 */ 2440 if (fromname && (cp = strchr(fromname, '@')) != NULL) { 2441 char origin[ZFS_MAXNAMELEN]; 2442 zprop_source_t src; 2443 2444 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN, 2445 origin, sizeof (origin), &src, NULL, 0, B_FALSE); 2446 2447 if (strcmp(origin, fromname) == 0) { 2448 fromname = NULL; 2449 fromorigin = B_TRUE; 2450 } else { 2451 *cp = '\0'; 2452 if (cp != fromname && strcmp(argv[0], fromname)) { 2453 (void) fprintf(stderr, 2454 gettext("incremental source must be " 2455 "in same filesystem\n")); 2456 usage(B_FALSE); 2457 } 2458 fromname = cp + 1; 2459 if (strchr(fromname, '@') || strchr(fromname, '/')) { 2460 (void) fprintf(stderr, 2461 gettext("invalid incremental source\n")); 2462 usage(B_FALSE); 2463 } 2464 } 2465 } 2466 2467 if (replicate && fromname == NULL) 2468 doall = B_TRUE; 2469 2470 err = zfs_send(zhp, fromname, toname, replicate, doall, fromorigin, 2471 verbose, STDOUT_FILENO); 2472 zfs_close(zhp); 2473 2474 return (err != 0); 2475} 2476 2477/* 2478 * zfs receive [-dnvF] <fs@snap> 2479 * 2480 * Restore a backup stream from stdin. 2481 */ 2482static int 2483zfs_do_receive(int argc, char **argv) 2484{ 2485 int c, err; 2486 recvflags_t flags; 2487 2488 bzero(&flags, sizeof (recvflags_t)); 2489 /* check options */ 2490 while ((c = getopt(argc, argv, ":dnuvF")) != -1) { 2491 switch (c) { 2492 case 'd': 2493 flags.isprefix = B_TRUE; 2494 break; 2495 case 'n': 2496 flags.dryrun = B_TRUE; 2497 break; 2498 case 'u': 2499 flags.nomount = B_TRUE; 2500 break; 2501 case 'v': 2502 flags.verbose = B_TRUE; 2503 break; 2504 case 'F': 2505 flags.force = B_TRUE; 2506 break; 2507 case ':': 2508 (void) fprintf(stderr, gettext("missing argument for " 2509 "'%c' option\n"), optopt); 2510 usage(B_FALSE); 2511 break; 2512 case '?': 2513 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2514 optopt); 2515 usage(B_FALSE); 2516 } 2517 } 2518 2519 argc -= optind; 2520 argv += optind; 2521 2522 /* check number of arguments */ 2523 if (argc < 1) { 2524 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2525 usage(B_FALSE); 2526 } 2527 if (argc > 1) { 2528 (void) fprintf(stderr, gettext("too many arguments\n")); 2529 usage(B_FALSE); 2530 } 2531 2532 if (isatty(STDIN_FILENO)) { 2533 (void) fprintf(stderr, 2534 gettext("Error: Backup stream can not be read " 2535 "from a terminal.\n" 2536 "You must redirect standard input.\n")); 2537 return (1); 2538 } 2539 2540 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL); 2541 2542 return (err != 0); 2543} 2544 2545typedef struct allow_cb { 2546 int a_permcnt; 2547 size_t a_treeoffset; 2548} allow_cb_t; 2549 2550static void 2551zfs_print_perms(avl_tree_t *tree) 2552{ 2553 zfs_perm_node_t *permnode; 2554 2555 permnode = avl_first(tree); 2556 while (permnode != NULL) { 2557 (void) printf("%s", permnode->z_pname); 2558 permnode = AVL_NEXT(tree, permnode); 2559 if (permnode) 2560 (void) printf(","); 2561 else 2562 (void) printf("\n"); 2563 } 2564} 2565 2566/* 2567 * Iterate over user/groups/everyone/... and the call perm_iter 2568 * function to print actual permission when tree has >0 nodes. 2569 */ 2570static void 2571zfs_iter_perms(avl_tree_t *tree, const char *banner, allow_cb_t *cb) 2572{ 2573 zfs_allow_node_t *item; 2574 avl_tree_t *ptree; 2575 2576 item = avl_first(tree); 2577 while (item) { 2578 ptree = (void *)((char *)item + cb->a_treeoffset); 2579 if (avl_numnodes(ptree)) { 2580 if (cb->a_permcnt++ == 0) 2581 (void) printf("%s\n", banner); 2582 (void) printf("\t%s", item->z_key); 2583 /* 2584 * Avoid an extra space being printed 2585 * for "everyone" which is keyed with a null 2586 * string 2587 */ 2588 if (item->z_key[0] != '\0') 2589 (void) printf(" "); 2590 zfs_print_perms(ptree); 2591 } 2592 item = AVL_NEXT(tree, item); 2593 } 2594} 2595 2596#define LINES "-------------------------------------------------------------\n" 2597static int 2598zfs_print_allows(char *ds) 2599{ 2600 zfs_allow_t *curperms, *perms; 2601 zfs_handle_t *zhp; 2602 allow_cb_t allowcb = { 0 }; 2603 char banner[MAXPATHLEN]; 2604 2605 if (ds[0] == '-') 2606 usage(B_FALSE); 2607 2608 if (strrchr(ds, '@')) { 2609 (void) fprintf(stderr, gettext("Snapshots don't have 'allow'" 2610 " permissions\n")); 2611 return (1); 2612 } 2613 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL) 2614 return (1); 2615 2616 if (zfs_perm_get(zhp, &perms)) { 2617 (void) fprintf(stderr, 2618 gettext("Failed to retrieve 'allows' on %s\n"), ds); 2619 zfs_close(zhp); 2620 return (1); 2621 } 2622 2623 zfs_close(zhp); 2624 2625 if (perms != NULL) 2626 (void) printf("%s", LINES); 2627 for (curperms = perms; curperms; curperms = curperms->z_next) { 2628 2629 (void) snprintf(banner, sizeof (banner), 2630 "Permission sets on (%s)", curperms->z_setpoint); 2631 allowcb.a_treeoffset = 2632 offsetof(zfs_allow_node_t, z_localdescend); 2633 allowcb.a_permcnt = 0; 2634 zfs_iter_perms(&curperms->z_sets, banner, &allowcb); 2635 2636 (void) snprintf(banner, sizeof (banner), 2637 "Create time permissions on (%s)", curperms->z_setpoint); 2638 allowcb.a_treeoffset = 2639 offsetof(zfs_allow_node_t, z_localdescend); 2640 allowcb.a_permcnt = 0; 2641 zfs_iter_perms(&curperms->z_crperms, banner, &allowcb); 2642 2643 2644 (void) snprintf(banner, sizeof (banner), 2645 "Local permissions on (%s)", curperms->z_setpoint); 2646 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_local); 2647 allowcb.a_permcnt = 0; 2648 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2649 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2650 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2651 2652 (void) snprintf(banner, sizeof (banner), 2653 "Descendent permissions on (%s)", curperms->z_setpoint); 2654 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_descend); 2655 allowcb.a_permcnt = 0; 2656 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2657 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2658 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2659 2660 (void) snprintf(banner, sizeof (banner), 2661 "Local+Descendent permissions on (%s)", 2662 curperms->z_setpoint); 2663 allowcb.a_treeoffset = 2664 offsetof(zfs_allow_node_t, z_localdescend); 2665 allowcb.a_permcnt = 0; 2666 zfs_iter_perms(&curperms->z_user, banner, &allowcb); 2667 zfs_iter_perms(&curperms->z_group, banner, &allowcb); 2668 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb); 2669 2670 (void) printf("%s", LINES); 2671 } 2672 zfs_free_allows(perms); 2673 return (0); 2674} 2675 2676#define ALLOWOPTIONS "ldcsu:g:e" 2677#define UNALLOWOPTIONS "ldcsu:g:er" 2678 2679/* 2680 * Validate options, and build necessary datastructure to display/remove/add 2681 * permissions. 2682 * Returns 0 - If permissions should be added/removed 2683 * Returns 1 - If permissions should be displayed. 2684 * Returns -1 - on failure 2685 */ 2686int 2687parse_allow_args(int *argc, char **argv[], boolean_t unallow, 2688 char **ds, int *recurse, nvlist_t **zperms) 2689{ 2690 int c; 2691 char *options = unallow ? UNALLOWOPTIONS : ALLOWOPTIONS; 2692 zfs_deleg_inherit_t deleg_type = ZFS_DELEG_NONE; 2693 zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN; 2694 char *who = NULL; 2695 char *perms = NULL; 2696 zfs_handle_t *zhp; 2697 2698 while ((c = getopt(*argc, *argv, options)) != -1) { 2699 switch (c) { 2700 case 'l': 2701 if (who_type == ZFS_DELEG_CREATE || 2702 who_type == ZFS_DELEG_NAMED_SET) 2703 usage(B_FALSE); 2704 2705 deleg_type |= ZFS_DELEG_PERM_LOCAL; 2706 break; 2707 case 'd': 2708 if (who_type == ZFS_DELEG_CREATE || 2709 who_type == ZFS_DELEG_NAMED_SET) 2710 usage(B_FALSE); 2711 2712 deleg_type |= ZFS_DELEG_PERM_DESCENDENT; 2713 break; 2714 case 'r': 2715 *recurse = B_TRUE; 2716 break; 2717 case 'c': 2718 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2719 usage(B_FALSE); 2720 if (deleg_type) 2721 usage(B_FALSE); 2722 who_type = ZFS_DELEG_CREATE; 2723 break; 2724 case 's': 2725 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2726 usage(B_FALSE); 2727 if (deleg_type) 2728 usage(B_FALSE); 2729 who_type = ZFS_DELEG_NAMED_SET; 2730 break; 2731 case 'u': 2732 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2733 usage(B_FALSE); 2734 who_type = ZFS_DELEG_USER; 2735 who = optarg; 2736 break; 2737 case 'g': 2738 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2739 usage(B_FALSE); 2740 who_type = ZFS_DELEG_GROUP; 2741 who = optarg; 2742 break; 2743 case 'e': 2744 if (who_type != ZFS_DELEG_WHO_UNKNOWN) 2745 usage(B_FALSE); 2746 who_type = ZFS_DELEG_EVERYONE; 2747 break; 2748 default: 2749 usage(B_FALSE); 2750 break; 2751 } 2752 } 2753 2754 if (deleg_type == 0) 2755 deleg_type = ZFS_DELEG_PERM_LOCALDESCENDENT; 2756 2757 *argc -= optind; 2758 *argv += optind; 2759 2760 if (unallow == B_FALSE && *argc == 1) { 2761 /* 2762 * Only print permissions if no options were processed 2763 */ 2764 if (optind == 1) 2765 return (1); 2766 else 2767 usage(B_FALSE); 2768 } 2769 2770 /* 2771 * initialize variables for zfs_build_perms based on number 2772 * of arguments. 2773 * 3 arguments ==> zfs [un]allow joe perm,perm,perm <dataset> or 2774 * zfs [un]allow -s @set1 perm,perm <dataset> 2775 * 2 arguments ==> zfs [un]allow -c perm,perm <dataset> or 2776 * zfs [un]allow -u|-g <name> perm <dataset> or 2777 * zfs [un]allow -e perm,perm <dataset> 2778 * zfs unallow joe <dataset> 2779 * zfs unallow -s @set1 <dataset> 2780 * 1 argument ==> zfs [un]allow -e <dataset> or 2781 * zfs [un]allow -c <dataset> 2782 */ 2783 2784 switch (*argc) { 2785 case 3: 2786 perms = (*argv)[1]; 2787 who = (*argv)[0]; 2788 *ds = (*argv)[2]; 2789 2790 /* 2791 * advance argc/argv for do_allow cases. 2792 * for do_allow case make sure who have a know who type 2793 * and its not a permission set. 2794 */ 2795 if (unallow == B_TRUE) { 2796 *argc -= 2; 2797 *argv += 2; 2798 } else if (who_type != ZFS_DELEG_WHO_UNKNOWN && 2799 who_type != ZFS_DELEG_NAMED_SET) 2800 usage(B_FALSE); 2801 break; 2802 2803 case 2: 2804 if (unallow == B_TRUE && (who_type == ZFS_DELEG_EVERYONE || 2805 who_type == ZFS_DELEG_CREATE || who != NULL)) { 2806 perms = (*argv)[0]; 2807 *ds = (*argv)[1]; 2808 } else { 2809 if (unallow == B_FALSE && 2810 (who_type == ZFS_DELEG_WHO_UNKNOWN || 2811 who_type == ZFS_DELEG_NAMED_SET)) 2812 usage(B_FALSE); 2813 else if (who_type == ZFS_DELEG_WHO_UNKNOWN || 2814 who_type == ZFS_DELEG_NAMED_SET) 2815 who = (*argv)[0]; 2816 else if (who_type != ZFS_DELEG_NAMED_SET) 2817 perms = (*argv)[0]; 2818 *ds = (*argv)[1]; 2819 } 2820 if (unallow == B_TRUE) { 2821 (*argc)--; 2822 (*argv)++; 2823 } 2824 break; 2825 2826 case 1: 2827 if (unallow == B_FALSE) 2828 usage(B_FALSE); 2829 if (who == NULL && who_type != ZFS_DELEG_CREATE && 2830 who_type != ZFS_DELEG_EVERYONE) 2831 usage(B_FALSE); 2832 *ds = (*argv)[0]; 2833 break; 2834 2835 default: 2836 usage(B_FALSE); 2837 } 2838 2839 if (strrchr(*ds, '@')) { 2840 (void) fprintf(stderr, 2841 gettext("Can't set or remove 'allow' permissions " 2842 "on snapshots.\n")); 2843 return (-1); 2844 } 2845 2846 if ((zhp = zfs_open(g_zfs, *ds, ZFS_TYPE_DATASET)) == NULL) 2847 return (-1); 2848 2849 if ((zfs_build_perms(zhp, who, perms, 2850 who_type, deleg_type, zperms)) != 0) { 2851 zfs_close(zhp); 2852 return (-1); 2853 } 2854 zfs_close(zhp); 2855 return (0); 2856} 2857 2858static int 2859zfs_do_allow(int argc, char **argv) 2860{ 2861 char *ds; 2862 nvlist_t *zperms = NULL; 2863 zfs_handle_t *zhp; 2864 int unused; 2865 int ret; 2866 2867 if ((ret = parse_allow_args(&argc, &argv, B_FALSE, &ds, 2868 &unused, &zperms)) == -1) 2869 return (1); 2870 2871 if (ret == 1) 2872 return (zfs_print_allows(argv[0])); 2873 2874 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL) 2875 return (1); 2876 2877 if (zfs_perm_set(zhp, zperms)) { 2878 zfs_close(zhp); 2879 nvlist_free(zperms); 2880 return (1); 2881 } 2882 nvlist_free(zperms); 2883 zfs_close(zhp); 2884 2885 return (0); 2886} 2887 2888static int 2889unallow_callback(zfs_handle_t *zhp, void *data) 2890{ 2891 nvlist_t *nvp = (nvlist_t *)data; 2892 int error; 2893 2894 error = zfs_perm_remove(zhp, nvp); 2895 if (error) { 2896 (void) fprintf(stderr, gettext("Failed to remove permissions " 2897 "on %s\n"), zfs_get_name(zhp)); 2898 } 2899 return (error); 2900} 2901 2902static int 2903zfs_do_unallow(int argc, char **argv) 2904{ 2905 int recurse = B_FALSE; 2906 char *ds; 2907 int error; 2908 nvlist_t *zperms = NULL; 2909 int flags = 0; 2910 2911 if (parse_allow_args(&argc, &argv, B_TRUE, 2912 &ds, &recurse, &zperms) == -1) 2913 return (1); 2914 2915 if (recurse) 2916 flags |= ZFS_ITER_RECURSE; 2917 error = zfs_for_each(argc, argv, flags, 2918 ZFS_TYPE_FILESYSTEM|ZFS_TYPE_VOLUME, NULL,
|
2889 NULL, unallow_callback, (void *)zperms);
|
2919 NULL, 0, unallow_callback, (void *)zperms); |
2920 2921 if (zperms) 2922 nvlist_free(zperms); 2923 2924 return (error); 2925} 2926 2927typedef struct get_all_cbdata { 2928 zfs_handle_t **cb_handles; 2929 size_t cb_alloc; 2930 size_t cb_used; 2931 uint_t cb_types; 2932 boolean_t cb_verbose; 2933} get_all_cbdata_t; 2934 2935#define CHECK_SPINNER 30 2936#define SPINNER_TIME 3 /* seconds */ 2937#define MOUNT_TIME 5 /* seconds */ 2938 2939static int 2940get_one_dataset(zfs_handle_t *zhp, void *data) 2941{ 2942 static char spin[] = { '-', '\\', '|', '/' }; 2943 static int spinval = 0; 2944 static int spincheck = 0; 2945 static time_t last_spin_time = (time_t)0; 2946 get_all_cbdata_t *cbp = data; 2947 zfs_type_t type = zfs_get_type(zhp); 2948 2949 if (cbp->cb_verbose) { 2950 if (--spincheck < 0) { 2951 time_t now = time(NULL); 2952 if (last_spin_time + SPINNER_TIME < now) { 2953 (void) printf("\b%c", spin[spinval++ % 4]); 2954 (void) fflush(stdout); 2955 last_spin_time = now; 2956 } 2957 spincheck = CHECK_SPINNER; 2958 } 2959 } 2960 2961 /* 2962 * Interate over any nested datasets. 2963 */ 2964 if (type == ZFS_TYPE_FILESYSTEM && 2965 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) { 2966 zfs_close(zhp); 2967 return (1); 2968 } 2969 2970 /* 2971 * Skip any datasets whose type does not match. 2972 */ 2973 if ((type & cbp->cb_types) == 0) { 2974 zfs_close(zhp); 2975 return (0); 2976 } 2977 2978 if (cbp->cb_alloc == cbp->cb_used) { 2979 zfs_handle_t **handles; 2980 2981 if (cbp->cb_alloc == 0) 2982 cbp->cb_alloc = 64; 2983 else 2984 cbp->cb_alloc *= 2; 2985 2986 handles = safe_malloc(cbp->cb_alloc * sizeof (void *)); 2987 2988 if (cbp->cb_handles) { 2989 bcopy(cbp->cb_handles, handles, 2990 cbp->cb_used * sizeof (void *)); 2991 free(cbp->cb_handles); 2992 } 2993 2994 cbp->cb_handles = handles; 2995 } 2996 2997 cbp->cb_handles[cbp->cb_used++] = zhp; 2998 2999 return (0); 3000} 3001 3002static void 3003get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count, 3004 boolean_t verbose) 3005{ 3006 get_all_cbdata_t cb = { 0 }; 3007 cb.cb_types = types; 3008 cb.cb_verbose = verbose; 3009 3010 if (verbose) { 3011 (void) printf("%s: *", gettext("Reading ZFS config")); 3012 (void) fflush(stdout); 3013 } 3014 3015 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb); 3016 3017 *dslist = cb.cb_handles; 3018 *count = cb.cb_used; 3019 3020 if (verbose) { 3021 (void) printf("\b%s\n", gettext("done.")); 3022 } 3023} 3024 3025static int 3026dataset_cmp(const void *a, const void *b) 3027{ 3028 zfs_handle_t **za = (zfs_handle_t **)a; 3029 zfs_handle_t **zb = (zfs_handle_t **)b; 3030 char mounta[MAXPATHLEN]; 3031 char mountb[MAXPATHLEN]; 3032 boolean_t gota, gotb; 3033 3034 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0) 3035 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta, 3036 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0); 3037 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0) 3038 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb, 3039 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0); 3040 3041 if (gota && gotb) 3042 return (strcmp(mounta, mountb)); 3043 3044 if (gota) 3045 return (-1); 3046 if (gotb) 3047 return (1); 3048 3049 return (strcmp(zfs_get_name(a), zfs_get_name(b))); 3050} 3051 3052/* 3053 * Generic callback for sharing or mounting filesystems. Because the code is so 3054 * similar, we have a common function with an extra parameter to determine which 3055 * mode we are using. 3056 */ 3057#define OP_SHARE 0x1 3058#define OP_MOUNT 0x2 3059 3060/* 3061 * Share or mount a dataset. 3062 */ 3063static int 3064share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol, 3065 boolean_t explicit, const char *options) 3066{ 3067 char mountpoint[ZFS_MAXPROPLEN]; 3068 char shareopts[ZFS_MAXPROPLEN]; 3069 char smbshareopts[ZFS_MAXPROPLEN]; 3070 const char *cmdname = op == OP_SHARE ? "share" : "mount"; 3071 struct mnttab mnt; 3072 uint64_t zoned, canmount; 3073 zfs_type_t type = zfs_get_type(zhp); 3074 boolean_t shared_nfs, shared_smb; 3075 3076 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)); 3077 3078 if (type == ZFS_TYPE_FILESYSTEM) { 3079 /* 3080 * Check to make sure we can mount/share this dataset. If we 3081 * are in the global zone and the filesystem is exported to a 3082 * local zone, or if we are in a local zone and the 3083 * filesystem is not exported, then it is an error. 3084 */ 3085 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 3086 3087 if (zoned && getzoneid() == GLOBAL_ZONEID) { 3088 if (!explicit) 3089 return (0); 3090 3091 (void) fprintf(stderr, gettext("cannot %s '%s': " 3092 "dataset is exported to a local zone\n"), cmdname, 3093 zfs_get_name(zhp)); 3094 return (1); 3095 3096 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) { 3097 if (!explicit) 3098 return (0); 3099 3100 (void) fprintf(stderr, gettext("cannot %s '%s': " 3101 "permission denied\n"), cmdname, 3102 zfs_get_name(zhp)); 3103 return (1); 3104 } 3105 3106 /* 3107 * Ignore any filesystems which don't apply to us. This 3108 * includes those with a legacy mountpoint, or those with 3109 * legacy share options. 3110 */ 3111 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 3112 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0); 3113 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts, 3114 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3115 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts, 3116 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0); 3117 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 3118 3119 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 && 3120 strcmp(smbshareopts, "off") == 0) { 3121 if (!explicit) 3122 return (0); 3123 3124 (void) fprintf(stderr, gettext("cannot share '%s': " 3125 "legacy share\n"), zfs_get_name(zhp)); 3126 (void) fprintf(stderr, gettext("use share(1M) to " 3127 "share this filesystem\n")); 3128 return (1); 3129 } 3130 3131 /* 3132 * We cannot share or mount legacy filesystems. If the 3133 * shareopts is non-legacy but the mountpoint is legacy, we 3134 * treat it as a legacy share. 3135 */ 3136 if (strcmp(mountpoint, "legacy") == 0) { 3137 if (!explicit) 3138 return (0); 3139 3140 (void) fprintf(stderr, gettext("cannot %s '%s': " 3141 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp)); 3142 (void) fprintf(stderr, gettext("use %s(1M) to " 3143 "%s this filesystem\n"), cmdname, cmdname); 3144 return (1); 3145 } 3146 3147 if (strcmp(mountpoint, "none") == 0) { 3148 if (!explicit) 3149 return (0); 3150 3151 (void) fprintf(stderr, gettext("cannot %s '%s': no " 3152 "mountpoint set\n"), cmdname, zfs_get_name(zhp)); 3153 return (1); 3154 } 3155 3156 /* 3157 * canmount explicit outcome 3158 * on no pass through 3159 * on yes pass through 3160 * off no return 0 3161 * off yes display error, return 1 3162 * noauto no return 0 3163 * noauto yes pass through 3164 */ 3165 if (canmount == ZFS_CANMOUNT_OFF) { 3166 if (!explicit) 3167 return (0); 3168 3169 (void) fprintf(stderr, gettext("cannot %s '%s': " 3170 "'canmount' property is set to 'off'\n"), cmdname, 3171 zfs_get_name(zhp)); 3172 return (1); 3173 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) { 3174 return (0); 3175 } 3176 3177 /* 3178 * At this point, we have verified that the mountpoint and/or 3179 * shareopts are appropriate for auto management. If the 3180 * filesystem is already mounted or shared, return (failing 3181 * for explicit requests); otherwise mount or share the 3182 * filesystem. 3183 */ 3184 switch (op) { 3185 case OP_SHARE: 3186 3187 shared_nfs = zfs_is_shared_nfs(zhp, NULL); 3188 shared_smb = zfs_is_shared_smb(zhp, NULL); 3189 3190 if (shared_nfs && shared_smb || 3191 (shared_nfs && strcmp(shareopts, "on") == 0 && 3192 strcmp(smbshareopts, "off") == 0) || 3193 (shared_smb && strcmp(smbshareopts, "on") == 0 && 3194 strcmp(shareopts, "off") == 0)) { 3195 if (!explicit) 3196 return (0); 3197 3198 (void) fprintf(stderr, gettext("cannot share " 3199 "'%s': filesystem already shared\n"), 3200 zfs_get_name(zhp)); 3201 return (1); 3202 } 3203 3204 if (!zfs_is_mounted(zhp, NULL) && 3205 zfs_mount(zhp, NULL, 0) != 0) 3206 return (1); 3207 3208 if (protocol == NULL) { 3209 if (zfs_shareall(zhp) != 0) 3210 return (1); 3211 } else if (strcmp(protocol, "nfs") == 0) { 3212 if (zfs_share_nfs(zhp)) 3213 return (1); 3214 } else if (strcmp(protocol, "smb") == 0) { 3215 if (zfs_share_smb(zhp)) 3216 return (1); 3217 } else { 3218 (void) fprintf(stderr, gettext("cannot share " 3219 "'%s': invalid share type '%s' " 3220 "specified\n"), 3221 zfs_get_name(zhp), protocol); 3222 return (1); 3223 } 3224 3225 break; 3226 3227 case OP_MOUNT: 3228 if (options == NULL) 3229 mnt.mnt_mntopts = ""; 3230 else 3231 mnt.mnt_mntopts = (char *)options; 3232 3233 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) && 3234 zfs_is_mounted(zhp, NULL)) { 3235 if (!explicit) 3236 return (0); 3237 3238 (void) fprintf(stderr, gettext("cannot mount " 3239 "'%s': filesystem already mounted\n"), 3240 zfs_get_name(zhp)); 3241 return (1); 3242 } 3243 3244 if (zfs_mount(zhp, options, flags) != 0) 3245 return (1); 3246 break; 3247 } 3248 } else { 3249 assert(op == OP_SHARE); 3250 3251 /* 3252 * Ignore any volumes that aren't shared. 3253 */ 3254 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts, 3255 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 3256 3257 if (strcmp(shareopts, "off") == 0) { 3258 if (!explicit) 3259 return (0); 3260 3261 (void) fprintf(stderr, gettext("cannot share '%s': " 3262 "'shareiscsi' property not set\n"), 3263 zfs_get_name(zhp)); 3264 (void) fprintf(stderr, gettext("set 'shareiscsi' " 3265 "property or use iscsitadm(1M) to share this " 3266 "volume\n")); 3267 return (1); 3268 } 3269 3270 if (zfs_is_shared_iscsi(zhp)) { 3271 if (!explicit) 3272 return (0); 3273 3274 (void) fprintf(stderr, gettext("cannot share " 3275 "'%s': volume already shared\n"), 3276 zfs_get_name(zhp)); 3277 return (1); 3278 } 3279 3280 if (zfs_share_iscsi(zhp) != 0) 3281 return (1); 3282 } 3283 3284 return (0); 3285} 3286 3287/* 3288 * Reports progress in the form "(current/total)". Not thread-safe. 3289 */ 3290static void 3291report_mount_progress(int current, int total) 3292{ 3293 static int len; 3294 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b" 3295 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"; 3296 static time_t last_progress_time; 3297 time_t now = time(NULL); 3298 3299 /* report 1..n instead of 0..n-1 */ 3300 ++current; 3301 3302 /* display header if we're here for the first time */ 3303 if (current == 1) { 3304 (void) printf(gettext("Mounting ZFS filesystems: ")); 3305 len = 0; 3306 } else if (current != total && last_progress_time + MOUNT_TIME >= now) { 3307 /* too soon to report again */ 3308 return; 3309 } 3310 3311 last_progress_time = now; 3312 3313 /* back up to prepare for overwriting */ 3314 if (len) 3315 (void) printf("%*.*s", len, len, reverse); 3316 3317 /* We put a newline at the end if this is the last one. */ 3318 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : ""); 3319 (void) fflush(stdout); 3320} 3321 3322static void 3323append_options(char *mntopts, char *newopts) 3324{ 3325 int len = strlen(mntopts); 3326 3327 /* original length plus new string to append plus 1 for the comma */ 3328 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) { 3329 (void) fprintf(stderr, gettext("the opts argument for " 3330 "'%c' option is too long (more than %d chars)\n"), 3331 "-o", MNT_LINE_MAX); 3332 usage(B_FALSE); 3333 } 3334 3335 if (*mntopts) 3336 mntopts[len++] = ','; 3337 3338 (void) strcpy(&mntopts[len], newopts); 3339} 3340 3341static int 3342share_mount(int op, int argc, char **argv) 3343{ 3344 int do_all = 0; 3345 boolean_t verbose = B_FALSE; 3346 int c, ret = 0; 3347 char *options = NULL; 3348 int types, flags = 0; 3349 3350 /* check options */ 3351 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a")) 3352 != -1) { 3353 switch (c) { 3354 case 'a': 3355 do_all = 1; 3356 break; 3357 case 'v': 3358 verbose = B_TRUE; 3359 break; 3360 case 'o': 3361 if (*optarg == '\0') { 3362 (void) fprintf(stderr, gettext("empty mount " 3363 "options (-o) specified\n")); 3364 usage(B_FALSE); 3365 } 3366 3367 if (options == NULL) 3368 options = safe_malloc(MNT_LINE_MAX + 1); 3369 3370 /* option validation is done later */ 3371 append_options(options, optarg); 3372 break; 3373 3374 case 'O': 3375 warnx("no overlay mounts support on FreeBSD, ignoring"); 3376 break; 3377 case ':': 3378 (void) fprintf(stderr, gettext("missing argument for " 3379 "'%c' option\n"), optopt); 3380 usage(B_FALSE); 3381 break; 3382 case '?': 3383 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3384 optopt); 3385 usage(B_FALSE); 3386 } 3387 } 3388 3389 argc -= optind; 3390 argv += optind; 3391 3392 /* check number of arguments */ 3393 if (do_all) { 3394 zfs_handle_t **dslist = NULL; 3395 size_t i, count = 0; 3396 char *protocol = NULL; 3397 3398 if (op == OP_MOUNT) { 3399 types = ZFS_TYPE_FILESYSTEM; 3400 } else if (argc > 0) { 3401 if (strcmp(argv[0], "nfs") == 0 || 3402 strcmp(argv[0], "smb") == 0) { 3403 types = ZFS_TYPE_FILESYSTEM; 3404 } else if (strcmp(argv[0], "iscsi") == 0) { 3405 types = ZFS_TYPE_VOLUME; 3406 } else { 3407 (void) fprintf(stderr, gettext("share type " 3408 "must be 'nfs', 'smb' or 'iscsi'\n")); 3409 usage(B_FALSE); 3410 } 3411 protocol = argv[0]; 3412 argc--; 3413 argv++; 3414 } else { 3415 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME; 3416 } 3417 3418 if (argc != 0) { 3419 (void) fprintf(stderr, gettext("too many arguments\n")); 3420 usage(B_FALSE); 3421 } 3422 3423 get_all_datasets(types, &dslist, &count, verbose); 3424 3425 if (count == 0) 3426 return (0); 3427 3428 qsort(dslist, count, sizeof (void *), dataset_cmp); 3429 3430 for (i = 0; i < count; i++) { 3431 if (verbose) 3432 report_mount_progress(i, count); 3433 3434 if (share_mount_one(dslist[i], op, flags, protocol, 3435 B_FALSE, options) != 0) 3436 ret = 1; 3437 zfs_close(dslist[i]); 3438 } 3439 3440 free(dslist); 3441 } else if (argc == 0) { 3442 struct statfs *sfs; 3443 int i, n; 3444 3445 if ((op == OP_SHARE) || (options != NULL)) { 3446 (void) fprintf(stderr, gettext("missing filesystem " 3447 "argument (specify -a for all)\n")); 3448 usage(B_FALSE); 3449 } 3450 3451 /* 3452 * When mount is given no arguments, go through /etc/mnttab and 3453 * display any active ZFS mounts. We hide any snapshots, since 3454 * they are controlled automatically. 3455 */ 3456 if ((n = getmntinfo(&sfs, MNT_WAIT)) == 0) { 3457 fprintf(stderr, "getmntinfo(): %s\n", strerror(errno)); 3458 return (0); 3459 } 3460 for (i = 0; i < n; i++) { 3461 if (strcmp(sfs[i].f_fstypename, MNTTYPE_ZFS) != 0 || 3462 strchr(sfs[i].f_mntfromname, '@') != NULL) 3463 continue; 3464 3465 (void) printf("%-30s %s\n", sfs[i].f_mntfromname, 3466 sfs[i].f_mntonname); 3467 } 3468 3469 } else { 3470 zfs_handle_t *zhp; 3471 3472 types = ZFS_TYPE_FILESYSTEM; 3473 if (op == OP_SHARE) 3474 types |= ZFS_TYPE_VOLUME; 3475 3476 if (argc > 1) { 3477 (void) fprintf(stderr, 3478 gettext("too many arguments\n")); 3479 usage(B_FALSE); 3480 } 3481 3482 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) { 3483 ret = 1; 3484 } else { 3485 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE, 3486 options); 3487 zfs_close(zhp); 3488 } 3489 } 3490 3491 return (ret); 3492} 3493 3494/* 3495 * zfs mount -a [nfs | iscsi] 3496 * zfs mount filesystem 3497 * 3498 * Mount all filesystems, or mount the given filesystem. 3499 */ 3500static int 3501zfs_do_mount(int argc, char **argv) 3502{ 3503 return (share_mount(OP_MOUNT, argc, argv)); 3504} 3505 3506/* 3507 * zfs share -a [nfs | iscsi | smb] 3508 * zfs share filesystem 3509 * 3510 * Share all filesystems, or share the given filesystem. 3511 */ 3512static int 3513zfs_do_share(int argc, char **argv) 3514{ 3515 return (share_mount(OP_SHARE, argc, argv)); 3516} 3517 3518typedef struct unshare_unmount_node { 3519 zfs_handle_t *un_zhp; 3520 char *un_mountp; 3521 uu_avl_node_t un_avlnode; 3522} unshare_unmount_node_t; 3523 3524/* ARGSUSED */ 3525static int 3526unshare_unmount_compare(const void *larg, const void *rarg, void *unused) 3527{ 3528 const unshare_unmount_node_t *l = larg; 3529 const unshare_unmount_node_t *r = rarg; 3530 3531 return (strcmp(l->un_mountp, r->un_mountp)); 3532} 3533 3534/* 3535 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an 3536 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem, 3537 * and unmount it appropriately. 3538 */ 3539static int 3540unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual) 3541{ 3542 zfs_handle_t *zhp; 3543 int ret; 3544 struct stat64 statbuf; 3545 struct mnttab search = { 0 }, entry; 3546 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount"; 3547 ino_t path_inode; 3548 3549 /* 3550 * Search for the path in /etc/mnttab. Rather than looking for the 3551 * specific path, which can be fooled by non-standard paths (i.e. ".." 3552 * or "//"), we stat() the path and search for the corresponding 3553 * (major,minor) device pair. 3554 */ 3555 if (stat64(path, &statbuf) != 0) { 3556 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3557 cmdname, path, strerror(errno)); 3558 return (1); 3559 } 3560 path_inode = statbuf.st_ino; 3561 3562 /* 3563 * Search for the given (major,minor) pair in the mount table. 3564 */ 3565 search.mnt_mountp = path; 3566 rewind(mnttab_file); 3567 if (getmntany(mnttab_file, &entry, &search) != 0) { 3568 if (op == OP_SHARE) { 3569 (void) fprintf(stderr, gettext("cannot %s '%s': not " 3570 "currently mounted\n"), cmdname, path); 3571 return (1); 3572 } 3573 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"), 3574 path); 3575 if ((ret = umount2(path, flags)) != 0) 3576 (void) fprintf(stderr, gettext("%s: %s\n"), path, 3577 strerror(errno)); 3578 return (ret != 0); 3579 } 3580 3581 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) { 3582 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS " 3583 "filesystem\n"), cmdname, path); 3584 return (1); 3585 } 3586 3587 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3588 ZFS_TYPE_FILESYSTEM)) == NULL) 3589 return (1); 3590 3591 ret = 1; 3592 if (stat64(entry.mnt_mountp, &statbuf) != 0) { 3593 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3594 cmdname, path, strerror(errno)); 3595 goto out; 3596 } else if (statbuf.st_ino != path_inode) { 3597 (void) fprintf(stderr, gettext("cannot " 3598 "%s '%s': not a mountpoint\n"), cmdname, path); 3599 goto out; 3600 } 3601 3602 if (op == OP_SHARE) { 3603 char nfs_mnt_prop[ZFS_MAXPROPLEN]; 3604 char smbshare_prop[ZFS_MAXPROPLEN]; 3605 3606 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop, 3607 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0); 3608 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop, 3609 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0); 3610 3611 if (strcmp(nfs_mnt_prop, "off") == 0 && 3612 strcmp(smbshare_prop, "off") == 0) { 3613 (void) fprintf(stderr, gettext("cannot unshare " 3614 "'%s': legacy share\n"), path); 3615 (void) fprintf(stderr, gettext("use " 3616 "unshare(1M) to unshare this filesystem\n")); 3617 } else if (!zfs_is_shared(zhp)) { 3618 (void) fprintf(stderr, gettext("cannot unshare '%s': " 3619 "not currently shared\n"), path); 3620 } else { 3621 ret = zfs_unshareall_bypath(zhp, path); 3622 } 3623 } else { 3624 char mtpt_prop[ZFS_MAXPROPLEN]; 3625 3626 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop, 3627 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0); 3628 3629 if (is_manual) { 3630 ret = zfs_unmount(zhp, NULL, flags); 3631 } else if (strcmp(mtpt_prop, "legacy") == 0) { 3632 (void) fprintf(stderr, gettext("cannot unmount " 3633 "'%s': legacy mountpoint\n"), 3634 zfs_get_name(zhp)); 3635 (void) fprintf(stderr, gettext("use umount(1M) " 3636 "to unmount this filesystem\n")); 3637 } else { 3638 ret = zfs_unmountall(zhp, flags); 3639 } 3640 } 3641 3642out: 3643 zfs_close(zhp); 3644 3645 return (ret != 0); 3646} 3647 3648/* 3649 * Generic callback for unsharing or unmounting a filesystem. 3650 */ 3651static int 3652unshare_unmount(int op, int argc, char **argv) 3653{ 3654 int do_all = 0; 3655 int flags = 0; 3656 int ret = 0; 3657 int types, c; 3658 zfs_handle_t *zhp; 3659 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN]; 3660 char sharesmb[ZFS_MAXPROPLEN]; 3661 3662 /* check options */ 3663 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) { 3664 switch (c) { 3665 case 'a': 3666 do_all = 1; 3667 break; 3668 case 'f': 3669 flags = MS_FORCE; 3670 break; 3671 case '?': 3672 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3673 optopt); 3674 usage(B_FALSE); 3675 } 3676 } 3677 3678 argc -= optind; 3679 argv += optind; 3680 3681 if (do_all) { 3682 /* 3683 * We could make use of zfs_for_each() to walk all datasets in 3684 * the system, but this would be very inefficient, especially 3685 * since we would have to linearly search /etc/mnttab for each 3686 * one. Instead, do one pass through /etc/mnttab looking for 3687 * zfs entries and call zfs_unmount() for each one. 3688 * 3689 * Things get a little tricky if the administrator has created 3690 * mountpoints beneath other ZFS filesystems. In this case, we 3691 * have to unmount the deepest filesystems first. To accomplish 3692 * this, we place all the mountpoints in an AVL tree sorted by 3693 * the special type (dataset name), and walk the result in 3694 * reverse to make sure to get any snapshots first. 3695 */ 3696 uu_avl_pool_t *pool; 3697 uu_avl_t *tree; 3698 unshare_unmount_node_t *node; 3699 uu_avl_index_t idx; 3700 uu_avl_walk_t *walk; 3701 struct statfs *sfs; 3702 int i, n; 3703 3704 if (argc != 0) { 3705 (void) fprintf(stderr, gettext("too many arguments\n")); 3706 usage(B_FALSE); 3707 } 3708 3709 if ((pool = uu_avl_pool_create("unmount_pool", 3710 sizeof (unshare_unmount_node_t), 3711 offsetof(unshare_unmount_node_t, un_avlnode), 3712 unshare_unmount_compare, 3713 UU_DEFAULT)) == NULL) { 3714 (void) fprintf(stderr, gettext("internal error: " 3715 "out of memory\n")); 3716 exit(1); 3717 } 3718 3719 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) { 3720 (void) fprintf(stderr, gettext("internal error: " 3721 "out of memory\n")); 3722 exit(1); 3723 } 3724 3725 if ((n = getmntinfo(&sfs, MNT_WAIT)) == 0) { 3726 (void) fprintf(stderr, gettext("internal error: " 3727 "getmntinfo() failed\n")); 3728 exit(1); 3729 } 3730 for (i = 0; i < n; i++) { 3731 3732 /* ignore non-ZFS entries */ 3733 if (strcmp(sfs[i].f_fstypename, MNTTYPE_ZFS) != 0) 3734 continue; 3735 3736 /* ignore snapshots */ 3737 if (strchr(sfs[i].f_mntfromname, '@') != NULL) 3738 continue; 3739 3740 if ((zhp = zfs_open(g_zfs, sfs[i].f_mntfromname, 3741 ZFS_TYPE_FILESYSTEM)) == NULL) { 3742 ret = 1; 3743 continue; 3744 } 3745 3746 switch (op) { 3747 case OP_SHARE: 3748 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3749 nfsiscsi_mnt_prop, 3750 sizeof (nfsiscsi_mnt_prop), 3751 NULL, NULL, 0, B_FALSE) == 0); 3752 if (strcmp(nfsiscsi_mnt_prop, "off") != 0) 3753 break; 3754 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3755 nfsiscsi_mnt_prop, 3756 sizeof (nfsiscsi_mnt_prop), 3757 NULL, NULL, 0, B_FALSE) == 0); 3758 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) 3759 continue; 3760 break; 3761 case OP_MOUNT: 3762 /* Ignore legacy mounts */ 3763 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, 3764 nfsiscsi_mnt_prop, 3765 sizeof (nfsiscsi_mnt_prop), 3766 NULL, NULL, 0, B_FALSE) == 0); 3767 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) 3768 continue; 3769 /* Ignore canmount=noauto mounts */ 3770 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == 3771 ZFS_CANMOUNT_NOAUTO) 3772 continue; 3773 default: 3774 break; 3775 } 3776 3777 node = safe_malloc(sizeof (unshare_unmount_node_t)); 3778 node->un_zhp = zhp; 3779 3780 if ((node->un_mountp = strdup(sfs[i].f_mntonname)) == 3781 NULL) { 3782 (void) fprintf(stderr, gettext("internal error:" 3783 " out of memory\n")); 3784 exit(1); 3785 } 3786 3787 uu_avl_node_init(node, &node->un_avlnode, pool); 3788 3789 if (uu_avl_find(tree, node, NULL, &idx) == NULL) { 3790 uu_avl_insert(tree, node, idx); 3791 } else { 3792 zfs_close(node->un_zhp); 3793 free(node->un_mountp); 3794 free(node); 3795 } 3796 } 3797 3798 /* 3799 * Walk the AVL tree in reverse, unmounting each filesystem and 3800 * removing it from the AVL tree in the process. 3801 */ 3802 if ((walk = uu_avl_walk_start(tree, 3803 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) { 3804 (void) fprintf(stderr, 3805 gettext("internal error: out of memory")); 3806 exit(1); 3807 } 3808 3809 while ((node = uu_avl_walk_next(walk)) != NULL) { 3810 uu_avl_remove(tree, node); 3811 3812 switch (op) { 3813 case OP_SHARE: 3814 if (zfs_unshareall_bypath(node->un_zhp, 3815 node->un_mountp) != 0) 3816 ret = 1; 3817 break; 3818 3819 case OP_MOUNT: 3820 if (zfs_unmount(node->un_zhp, 3821 node->un_mountp, flags) != 0) 3822 ret = 1; 3823 break; 3824 } 3825 3826 zfs_close(node->un_zhp); 3827 free(node->un_mountp); 3828 free(node); 3829 } 3830 3831 uu_avl_walk_end(walk); 3832 uu_avl_destroy(tree); 3833 uu_avl_pool_destroy(pool); 3834 3835 if (op == OP_SHARE) { 3836 /* 3837 * Finally, unshare any volumes shared via iSCSI. 3838 */ 3839 zfs_handle_t **dslist = NULL; 3840 size_t i, count = 0; 3841 3842 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count, 3843 B_FALSE); 3844 3845 if (count != 0) { 3846 qsort(dslist, count, sizeof (void *), 3847 dataset_cmp); 3848 3849 for (i = 0; i < count; i++) { 3850 if (zfs_unshare_iscsi(dslist[i]) != 0) 3851 ret = 1; 3852 zfs_close(dslist[i]); 3853 } 3854 3855 free(dslist); 3856 } 3857 } 3858 } else { 3859 if (argc != 1) { 3860 if (argc == 0) 3861 (void) fprintf(stderr, 3862 gettext("missing filesystem argument\n")); 3863 else 3864 (void) fprintf(stderr, 3865 gettext("too many arguments\n")); 3866 usage(B_FALSE); 3867 } 3868 3869 /* 3870 * We have an argument, but it may be a full path or a ZFS 3871 * filesystem. Pass full paths off to unmount_path() (shared by 3872 * manual_unmount), otherwise open the filesystem and pass to 3873 * zfs_unmount(). 3874 */ 3875 if (argv[0][0] == '/') 3876 return (unshare_unmount_path(op, argv[0], 3877 flags, B_FALSE)); 3878 3879 types = ZFS_TYPE_FILESYSTEM; 3880 if (op == OP_SHARE) 3881 types |= ZFS_TYPE_VOLUME; 3882 3883 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) 3884 return (1); 3885 3886 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 3887 verify(zfs_prop_get(zhp, op == OP_SHARE ? 3888 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, 3889 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL, 3890 NULL, 0, B_FALSE) == 0); 3891 3892 switch (op) { 3893 case OP_SHARE: 3894 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3895 nfsiscsi_mnt_prop, 3896 sizeof (nfsiscsi_mnt_prop), 3897 NULL, NULL, 0, B_FALSE) == 0); 3898 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3899 sharesmb, sizeof (sharesmb), NULL, NULL, 3900 0, B_FALSE) == 0); 3901 3902 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 && 3903 strcmp(sharesmb, "off") == 0) { 3904 (void) fprintf(stderr, gettext("cannot " 3905 "unshare '%s': legacy share\n"), 3906 zfs_get_name(zhp)); 3907 (void) fprintf(stderr, gettext("use " 3908 "unshare(1M) to unshare this " 3909 "filesystem\n")); 3910 ret = 1; 3911 } else if (!zfs_is_shared(zhp)) { 3912 (void) fprintf(stderr, gettext("cannot " 3913 "unshare '%s': not currently " 3914 "shared\n"), zfs_get_name(zhp)); 3915 ret = 1; 3916 } else if (zfs_unshareall(zhp) != 0) { 3917 ret = 1; 3918 } 3919 break; 3920 3921 case OP_MOUNT: 3922 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) { 3923 (void) fprintf(stderr, gettext("cannot " 3924 "unmount '%s': legacy " 3925 "mountpoint\n"), zfs_get_name(zhp)); 3926 (void) fprintf(stderr, gettext("use " 3927 "umount(1M) to unmount this " 3928 "filesystem\n")); 3929 ret = 1; 3930 } else if (!zfs_is_mounted(zhp, NULL)) { 3931 (void) fprintf(stderr, gettext("cannot " 3932 "unmount '%s': not currently " 3933 "mounted\n"), 3934 zfs_get_name(zhp)); 3935 ret = 1; 3936 } else if (zfs_unmountall(zhp, flags) != 0) { 3937 ret = 1; 3938 } 3939 break; 3940 } 3941 } else { 3942 assert(op == OP_SHARE); 3943 3944 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, 3945 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), 3946 NULL, NULL, 0, B_FALSE) == 0); 3947 3948 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) { 3949 (void) fprintf(stderr, gettext("cannot unshare " 3950 "'%s': 'shareiscsi' property not set\n"), 3951 zfs_get_name(zhp)); 3952 (void) fprintf(stderr, gettext("set " 3953 "'shareiscsi' property or use " 3954 "iscsitadm(1M) to share this volume\n")); 3955 ret = 1; 3956 } else if (!zfs_is_shared_iscsi(zhp)) { 3957 (void) fprintf(stderr, gettext("cannot " 3958 "unshare '%s': not currently shared\n"), 3959 zfs_get_name(zhp)); 3960 ret = 1; 3961 } else if (zfs_unshare_iscsi(zhp) != 0) { 3962 ret = 1; 3963 } 3964 } 3965 3966 zfs_close(zhp); 3967 } 3968 3969 return (ret); 3970} 3971 3972/* 3973 * zfs unmount -a 3974 * zfs unmount filesystem 3975 * 3976 * Unmount all filesystems, or a specific ZFS filesystem. 3977 */ 3978static int 3979zfs_do_unmount(int argc, char **argv) 3980{ 3981 return (unshare_unmount(OP_MOUNT, argc, argv)); 3982} 3983 3984/* 3985 * zfs unshare -a 3986 * zfs unshare filesystem 3987 * 3988 * Unshare all filesystems, or a specific ZFS filesystem. 3989 */ 3990static int 3991zfs_do_unshare(int argc, char **argv) 3992{ 3993 return (unshare_unmount(OP_SHARE, argc, argv)); 3994} 3995 3996/* 3997 * Attach/detach the given dataset to/from the given jail 3998 */ 3999/* ARGSUSED */ 4000static int 4001do_jail(int argc, char **argv, int attach) 4002{ 4003 zfs_handle_t *zhp; 4004 int jailid, ret; 4005 4006 /* check number of arguments */ 4007 if (argc < 3) { 4008 (void) fprintf(stderr, gettext("missing argument(s)\n")); 4009 usage(B_FALSE); 4010 } 4011 if (argc > 3) { 4012 (void) fprintf(stderr, gettext("too many arguments\n")); 4013 usage(B_FALSE); 4014 } 4015 4016 jailid = atoi(argv[1]); 4017 if (jailid == 0) { 4018 (void) fprintf(stderr, gettext("invalid jailid\n")); 4019 usage(B_FALSE); 4020 } 4021 4022 zhp = zfs_open(g_zfs, argv[2], ZFS_TYPE_FILESYSTEM); 4023 if (zhp == NULL) 4024 return (1); 4025 4026 ret = (zfs_jail(zhp, jailid, attach) != 0); 4027 4028 zfs_close(zhp); 4029 return (ret); 4030} 4031 4032/* 4033 * zfs jail jailid filesystem 4034 * 4035 * Attach the given dataset to the given jail 4036 */ 4037/* ARGSUSED */ 4038static int 4039zfs_do_jail(int argc, char **argv) 4040{ 4041 4042 return (do_jail(argc, argv, 1)); 4043} 4044 4045/* 4046 * zfs unjail jailid filesystem 4047 * 4048 * Detach the given dataset from the given jail 4049 */ 4050/* ARGSUSED */ 4051static int 4052zfs_do_unjail(int argc, char **argv) 4053{ 4054 4055 return (do_jail(argc, argv, 0)); 4056} 4057 4058/* 4059 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is 4060 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'. 4061 */ 4062static int 4063manual_mount(int argc, char **argv) 4064{ 4065 zfs_handle_t *zhp; 4066 char mountpoint[ZFS_MAXPROPLEN]; 4067 char mntopts[MNT_LINE_MAX] = { '\0' }; 4068 int ret; 4069 int c; 4070 int flags = 0; 4071 char *dataset, *path; 4072 4073 /* check options */ 4074 while ((c = getopt(argc, argv, ":mo:O")) != -1) { 4075 switch (c) { 4076 case 'o': 4077 (void) strlcpy(mntopts, optarg, sizeof (mntopts)); 4078 break; 4079 case 'O': 4080#if 0 /* FreeBSD: No support for MS_OVERLAY. */ 4081 flags |= MS_OVERLAY; 4082#endif 4083 break; 4084 case 'm': 4085#if 0 /* FreeBSD: No support for MS_NOMNTTAB. */ 4086 flags |= MS_NOMNTTAB; 4087#endif 4088 break; 4089 case ':': 4090 (void) fprintf(stderr, gettext("missing argument for " 4091 "'%c' option\n"), optopt); 4092 usage(B_FALSE); 4093 break; 4094 case '?': 4095 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 4096 optopt); 4097 (void) fprintf(stderr, gettext("usage: mount [-o opts] " 4098 "<path>\n")); 4099 return (2); 4100 } 4101 } 4102 4103 argc -= optind; 4104 argv += optind; 4105 4106 /* check that we only have two arguments */ 4107 if (argc != 2) { 4108 if (argc == 0) 4109 (void) fprintf(stderr, gettext("missing dataset " 4110 "argument\n")); 4111 else if (argc == 1) 4112 (void) fprintf(stderr, 4113 gettext("missing mountpoint argument\n")); 4114 else 4115 (void) fprintf(stderr, gettext("too many arguments\n")); 4116 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n"); 4117 return (2); 4118 } 4119 4120 dataset = argv[0]; 4121 path = argv[1]; 4122 4123 /* try to open the dataset */ 4124 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL) 4125 return (1); 4126 4127 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 4128 sizeof (mountpoint), NULL, NULL, 0, B_FALSE); 4129 4130 /* check for legacy mountpoint and complain appropriately */ 4131 ret = 0; 4132 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) { 4133 if (zmount(dataset, path, flags, MNTTYPE_ZFS, 4134 NULL, 0, mntopts, sizeof (mntopts)) != 0) { 4135 (void) fprintf(stderr, gettext("mount failed: %s\n"), 4136 strerror(errno)); 4137 ret = 1; 4138 } 4139 } else { 4140 (void) fprintf(stderr, gettext("filesystem '%s' cannot be " 4141 "mounted using 'mount -F zfs'\n"), dataset); 4142 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' " 4143 "instead.\n"), path); 4144 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' " 4145 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n")); 4146 (void) fprintf(stderr, gettext("See zfs(1M) for more " 4147 "information.\n")); 4148 ret = 1; 4149 } 4150 4151 return (ret); 4152} 4153 4154/* 4155 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow 4156 * unmounts of non-legacy filesystems, as this is the dominant administrative 4157 * interface. 4158 */ 4159static int 4160manual_unmount(int argc, char **argv) 4161{ 4162 int flags = 0; 4163 int c; 4164 4165 /* check options */ 4166 while ((c = getopt(argc, argv, "f")) != -1) { 4167 switch (c) { 4168 case 'f': 4169 flags = MS_FORCE; 4170 break; 4171 case '?': 4172 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 4173 optopt); 4174 (void) fprintf(stderr, gettext("usage: unmount [-f] " 4175 "<path>\n")); 4176 return (2); 4177 } 4178 } 4179 4180 argc -= optind; 4181 argv += optind; 4182 4183 /* check arguments */ 4184 if (argc != 1) { 4185 if (argc == 0) 4186 (void) fprintf(stderr, gettext("missing path " 4187 "argument\n")); 4188 else 4189 (void) fprintf(stderr, gettext("too many arguments\n")); 4190 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n")); 4191 return (2); 4192 } 4193 4194 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE)); 4195} 4196 4197static int 4198volcheck(zpool_handle_t *zhp, void *data) 4199{ 4200 boolean_t isinit = *((boolean_t *)data); 4201 4202 if (isinit) 4203 return (zpool_create_zvol_links(zhp)); 4204 else 4205 return (zpool_remove_zvol_links(zhp)); 4206} 4207 4208/* 4209 * Iterate over all pools in the system and either create or destroy /dev/zvol 4210 * links, depending on the value of 'isinit'. 4211 */ 4212static int 4213do_volcheck(boolean_t isinit) 4214{ 4215 return (zpool_iter(g_zfs, volcheck, &isinit) ? 1 : 0); 4216} 4217 4218static int 4219find_command_idx(char *command, int *idx) 4220{ 4221 int i; 4222 4223 for (i = 0; i < NCOMMAND; i++) { 4224 if (command_table[i].name == NULL) 4225 continue; 4226 4227 if (strcmp(command, command_table[i].name) == 0) { 4228 *idx = i; 4229 return (0); 4230 } 4231 } 4232 return (1); 4233} 4234 4235int 4236main(int argc, char **argv) 4237{ 4238 int ret; 4239 int i; 4240 char *progname; 4241 char *cmdname; 4242 4243 (void) setlocale(LC_ALL, ""); 4244 (void) textdomain(TEXT_DOMAIN); 4245 4246 opterr = 0; 4247 4248 if ((g_zfs = libzfs_init()) == NULL) { 4249 (void) fprintf(stderr, gettext("internal error: failed to " 4250 "initialize ZFS library\n")); 4251 return (1); 4252 } 4253 4254 zpool_set_history_str("zfs", argc, argv, history_str); 4255 verify(zpool_stage_history(g_zfs, history_str) == 0); 4256 4257 libzfs_print_on_error(g_zfs, B_TRUE); 4258 4259 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) { 4260 (void) fprintf(stderr, gettext("internal error: unable to " 4261 "open %s\n"), MNTTAB); 4262 return (1); 4263 } 4264 4265 /* 4266 * This command also doubles as the /etc/fs mount and unmount program. 4267 * Determine if we should take this behavior based on argv[0]. 4268 */ 4269 progname = basename(argv[0]); 4270 if (strcmp(progname, "mount") == 0) { 4271 ret = manual_mount(argc, argv); 4272 } else if (strcmp(progname, "umount") == 0) { 4273 ret = manual_unmount(argc, argv); 4274 } else { 4275 /* 4276 * Make sure the user has specified some command. 4277 */ 4278 if (argc < 2) { 4279 (void) fprintf(stderr, gettext("missing command\n")); 4280 usage(B_FALSE); 4281 } 4282 4283 cmdname = argv[1]; 4284 4285 /* 4286 * The 'umount' command is an alias for 'unmount' 4287 */ 4288 if (strcmp(cmdname, "umount") == 0) 4289 cmdname = "unmount"; 4290 4291 /* 4292 * The 'recv' command is an alias for 'receive' 4293 */ 4294 if (strcmp(cmdname, "recv") == 0) 4295 cmdname = "receive"; 4296 4297 /* 4298 * Special case '-?' 4299 */ 4300 if (strcmp(cmdname, "-?") == 0) 4301 usage(B_TRUE); 4302 4303 /* 4304 * 'volinit' and 'volfini' do not appear in the usage message, 4305 * so we have to special case them here. 4306 */ 4307 if (strcmp(cmdname, "volinit") == 0) 4308 return (do_volcheck(B_TRUE)); 4309 else if (strcmp(cmdname, "volfini") == 0) 4310 return (do_volcheck(B_FALSE)); 4311 4312 /* 4313 * Run the appropriate command. 4314 */ 4315 if (find_command_idx(cmdname, &i) == 0) { 4316 current_command = &command_table[i]; 4317 ret = command_table[i].func(argc - 1, argv + 1); 4318 } else if (strchr(cmdname, '=') != NULL) { 4319 verify(find_command_idx("set", &i) == 0); 4320 current_command = &command_table[i]; 4321 ret = command_table[i].func(argc, argv); 4322 } else { 4323 (void) fprintf(stderr, gettext("unrecognized " 4324 "command '%s'\n"), cmdname); 4325 usage(B_FALSE); 4326 } 4327 } 4328 4329 (void) fclose(mnttab_file); 4330 4331 libzfs_fini(g_zfs); 4332 4333 /* 4334 * The 'ZFS_ABORT' environment variable causes us to dump core on exit 4335 * for the purposes of running ::findleaks. 4336 */ 4337 if (getenv("ZFS_ABORT") != NULL) { 4338 (void) printf("dumping core by request\n"); 4339 abort(); 4340 } 4341 4342 return (ret); 4343}
|