zfs_main.c revision 9396:f41cf682d0d3
1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22/* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27#include <assert.h> 28#include <ctype.h> 29#include <errno.h> 30#include <libgen.h> 31#include <libintl.h> 32#include <libuutil.h> 33#include <libnvpair.h> 34#include <locale.h> 35#include <stddef.h> 36#include <stdio.h> 37#include <stdlib.h> 38#include <strings.h> 39#include <unistd.h> 40#include <fcntl.h> 41#include <zone.h> 42#include <grp.h> 43#include <pwd.h> 44#include <sys/mkdev.h> 45#include <sys/mntent.h> 46#include <sys/mnttab.h> 47#include <sys/mount.h> 48#include <sys/stat.h> 49#include <sys/fs/zfs.h> 50 51#include <libzfs.h> 52#include <libuutil.h> 53 54#include "zfs_iter.h" 55#include "zfs_util.h" 56 57libzfs_handle_t *g_zfs; 58 59static FILE *mnttab_file; 60static char history_str[HIS_MAX_RECORD_LEN]; 61const char *pypath = "/usr/lib/zfs/pyzfs.py"; 62 63static int zfs_do_clone(int argc, char **argv); 64static int zfs_do_create(int argc, char **argv); 65static int zfs_do_destroy(int argc, char **argv); 66static int zfs_do_get(int argc, char **argv); 67static int zfs_do_inherit(int argc, char **argv); 68static int zfs_do_list(int argc, char **argv); 69static int zfs_do_mount(int argc, char **argv); 70static int zfs_do_rename(int argc, char **argv); 71static int zfs_do_rollback(int argc, char **argv); 72static int zfs_do_set(int argc, char **argv); 73static int zfs_do_upgrade(int argc, char **argv); 74static int zfs_do_snapshot(int argc, char **argv); 75static int zfs_do_unmount(int argc, char **argv); 76static int zfs_do_share(int argc, char **argv); 77static int zfs_do_unshare(int argc, char **argv); 78static int zfs_do_send(int argc, char **argv); 79static int zfs_do_receive(int argc, char **argv); 80static int zfs_do_promote(int argc, char **argv); 81static int zfs_do_userspace(int argc, char **argv); 82static int zfs_do_python(int argc, char **argv); 83 84/* 85 * Enable a reasonable set of defaults for libumem debugging on DEBUG builds. 86 */ 87 88#ifdef DEBUG 89const char * 90_umem_debug_init(void) 91{ 92 return ("default,verbose"); /* $UMEM_DEBUG setting */ 93} 94 95const char * 96_umem_logging_init(void) 97{ 98 return ("fail,contents"); /* $UMEM_LOGGING setting */ 99} 100#endif 101 102typedef enum { 103 HELP_CLONE, 104 HELP_CREATE, 105 HELP_DESTROY, 106 HELP_GET, 107 HELP_INHERIT, 108 HELP_UPGRADE, 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 HELP_USERSPACE, 124 HELP_GROUPSPACE 125} zfs_help_t; 126 127typedef struct zfs_command { 128 const char *name; 129 int (*func)(int argc, char **argv); 130 zfs_help_t usage; 131} zfs_command_t; 132 133/* 134 * Master command table. Each ZFS command has a name, associated function, and 135 * usage message. The usage messages need to be internationalized, so we have 136 * to have a function to return the usage message based on a command index. 137 * 138 * These commands are organized according to how they are displayed in the usage 139 * message. An empty command (one with a NULL name) indicates an empty line in 140 * the generic usage message. 141 */ 142static zfs_command_t command_table[] = { 143 { "create", zfs_do_create, HELP_CREATE }, 144 { "destroy", zfs_do_destroy, HELP_DESTROY }, 145 { NULL }, 146 { "snapshot", zfs_do_snapshot, HELP_SNAPSHOT }, 147 { "rollback", zfs_do_rollback, HELP_ROLLBACK }, 148 { "clone", zfs_do_clone, HELP_CLONE }, 149 { "promote", zfs_do_promote, HELP_PROMOTE }, 150 { "rename", zfs_do_rename, HELP_RENAME }, 151 { NULL }, 152 { "list", zfs_do_list, HELP_LIST }, 153 { NULL }, 154 { "set", zfs_do_set, HELP_SET }, 155 { "get", zfs_do_get, HELP_GET }, 156 { "inherit", zfs_do_inherit, HELP_INHERIT }, 157 { "upgrade", zfs_do_upgrade, HELP_UPGRADE }, 158 { "userspace", zfs_do_userspace, HELP_USERSPACE }, 159 { "groupspace", zfs_do_userspace, HELP_GROUPSPACE }, 160 { NULL }, 161 { "mount", zfs_do_mount, HELP_MOUNT }, 162 { "unmount", zfs_do_unmount, HELP_UNMOUNT }, 163 { "share", zfs_do_share, HELP_SHARE }, 164 { "unshare", zfs_do_unshare, HELP_UNSHARE }, 165 { NULL }, 166 { "send", zfs_do_send, HELP_SEND }, 167 { "receive", zfs_do_receive, HELP_RECEIVE }, 168 { NULL }, 169 { "allow", zfs_do_python, HELP_ALLOW }, 170 { NULL }, 171 { "unallow", zfs_do_python, HELP_UNALLOW }, 172}; 173 174#define NCOMMAND (sizeof (command_table) / sizeof (command_table[0])) 175 176zfs_command_t *current_command; 177 178static const char * 179get_usage(zfs_help_t idx) 180{ 181 switch (idx) { 182 case HELP_CLONE: 183 return (gettext("\tclone [-p] [-o property=value] ... " 184 "<snapshot> <filesystem|volume>\n")); 185 case HELP_CREATE: 186 return (gettext("\tcreate [-p] [-o property=value] ... " 187 "<filesystem>\n" 188 "\tcreate [-ps] [-b blocksize] [-o property=value] ... " 189 "-V <size> <volume>\n")); 190 case HELP_DESTROY: 191 return (gettext("\tdestroy [-rRf] " 192 "<filesystem|volume|snapshot>\n")); 193 case HELP_GET: 194 return (gettext("\tget [-rHp] [-d max] " 195 "[-o field[,...]] [-s source[,...]]\n" 196 "\t <\"all\" | property[,...]> " 197 "[filesystem|volume|snapshot] ...\n")); 198 case HELP_INHERIT: 199 return (gettext("\tinherit [-r] <property> " 200 "<filesystem|volume|snapshot> ...\n")); 201 case HELP_UPGRADE: 202 return (gettext("\tupgrade [-v]\n" 203 "\tupgrade [-r] [-V version] <-a | filesystem ...>\n")); 204 case HELP_LIST: 205 return (gettext("\tlist [-rH][-d max] " 206 "[-o property[,...]] [-t type[,...]] [-s property] ...\n" 207 "\t [-S property] ... " 208 "[filesystem|volume|snapshot] ...\n")); 209 case HELP_MOUNT: 210 return (gettext("\tmount\n" 211 "\tmount [-vO] [-o opts] <-a | filesystem>\n")); 212 case HELP_PROMOTE: 213 return (gettext("\tpromote <clone-filesystem>\n")); 214 case HELP_RECEIVE: 215 return (gettext("\treceive [-vnF] <filesystem|volume|" 216 "snapshot>\n" 217 "\treceive [-vnF] -d <filesystem>\n")); 218 case HELP_RENAME: 219 return (gettext("\trename <filesystem|volume|snapshot> " 220 "<filesystem|volume|snapshot>\n" 221 "\trename -p <filesystem|volume> <filesystem|volume>\n" 222 "\trename -r <snapshot> <snapshot>")); 223 case HELP_ROLLBACK: 224 return (gettext("\trollback [-rRf] <snapshot>\n")); 225 case HELP_SEND: 226 return (gettext("\tsend [-R] [-[iI] snapshot] <snapshot>\n")); 227 case HELP_SET: 228 return (gettext("\tset <property=value> " 229 "<filesystem|volume|snapshot> ...\n")); 230 case HELP_SHARE: 231 return (gettext("\tshare <-a | filesystem>\n")); 232 case HELP_SNAPSHOT: 233 return (gettext("\tsnapshot [-r] [-o property=value] ... " 234 "<filesystem@snapname|volume@snapname>\n")); 235 case HELP_UNMOUNT: 236 return (gettext("\tunmount [-f] " 237 "<-a | filesystem|mountpoint>\n")); 238 case HELP_UNSHARE: 239 return (gettext("\tunshare [-f] " 240 "<-a | filesystem|mountpoint>\n")); 241 case HELP_ALLOW: 242 return (gettext("\tallow [-ldug] " 243 "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n" 244 "\t <filesystem|volume>\n" 245 "\tallow [-ld] -e <perm|@setname>[,...] " 246 "<filesystem|volume>\n" 247 "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n" 248 "\tallow -s @setname <perm|@setname>[,...] " 249 "<filesystem|volume>\n")); 250 case HELP_UNALLOW: 251 return (gettext("\tunallow [-rldug] " 252 "<\"everyone\"|user|group>[,...]\n" 253 "\t [<perm|@setname>[,...]] <filesystem|volume>\n" 254 "\tunallow [-rld] -e [<perm|@setname>[,...]] " 255 "<filesystem|volume>\n" 256 "\tunallow [-r] -c [<perm|@setname>[,...]] " 257 "<filesystem|volume>\n" 258 "\tunallow [-r] -s @setname [<perm|@setname>[,...]] " 259 "<filesystem|volume>\n")); 260 case HELP_USERSPACE: 261 return (gettext("\tuserspace [-hniHp] [-o field[,...]] " 262 "[-sS field] ... [-t type[,...]]\n" 263 "\t <filesystem|snapshot>\n")); 264 case HELP_GROUPSPACE: 265 return (gettext("\tgroupspace [-hniHpU] [-o field[,...]] " 266 "[-sS field] ... [-t type[,...]]\n" 267 "\t <filesystem|snapshot>\n")); 268 } 269 270 abort(); 271 /* NOTREACHED */ 272} 273 274/* 275 * Utility function to guarantee malloc() success. 276 */ 277void * 278safe_malloc(size_t size) 279{ 280 void *data; 281 282 if ((data = calloc(1, size)) == NULL) { 283 (void) fprintf(stderr, "internal error: out of memory\n"); 284 exit(1); 285 } 286 287 return (data); 288} 289 290/* 291 * Callback routine that will print out information for each of 292 * the properties. 293 */ 294static int 295usage_prop_cb(int prop, void *cb) 296{ 297 FILE *fp = cb; 298 299 (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop)); 300 301 if (zfs_prop_readonly(prop)) 302 (void) fprintf(fp, " NO "); 303 else 304 (void) fprintf(fp, "YES "); 305 306 if (zfs_prop_inheritable(prop)) 307 (void) fprintf(fp, " YES "); 308 else 309 (void) fprintf(fp, " NO "); 310 311 if (zfs_prop_values(prop) == NULL) 312 (void) fprintf(fp, "-\n"); 313 else 314 (void) fprintf(fp, "%s\n", zfs_prop_values(prop)); 315 316 return (ZPROP_CONT); 317} 318 319/* 320 * Display usage message. If we're inside a command, display only the usage for 321 * that command. Otherwise, iterate over the entire command table and display 322 * a complete usage message. 323 */ 324static void 325usage(boolean_t requested) 326{ 327 int i; 328 boolean_t show_properties = B_FALSE; 329 FILE *fp = requested ? stdout : stderr; 330 331 if (current_command == NULL) { 332 333 (void) fprintf(fp, gettext("usage: zfs command args ...\n")); 334 (void) fprintf(fp, 335 gettext("where 'command' is one of the following:\n\n")); 336 337 for (i = 0; i < NCOMMAND; i++) { 338 if (command_table[i].name == NULL) 339 (void) fprintf(fp, "\n"); 340 else 341 (void) fprintf(fp, "%s", 342 get_usage(command_table[i].usage)); 343 } 344 345 (void) fprintf(fp, gettext("\nEach dataset is of the form: " 346 "pool/[dataset/]*dataset[@name]\n")); 347 } else { 348 (void) fprintf(fp, gettext("usage:\n")); 349 (void) fprintf(fp, "%s", get_usage(current_command->usage)); 350 } 351 352 if (current_command != NULL && 353 (strcmp(current_command->name, "set") == 0 || 354 strcmp(current_command->name, "get") == 0 || 355 strcmp(current_command->name, "inherit") == 0 || 356 strcmp(current_command->name, "list") == 0)) 357 show_properties = B_TRUE; 358 359 if (show_properties) { 360 (void) fprintf(fp, 361 gettext("\nThe following properties are supported:\n")); 362 363 (void) fprintf(fp, "\n\t%-14s %s %s %s\n\n", 364 "PROPERTY", "EDIT", "INHERIT", "VALUES"); 365 366 /* Iterate over all properties */ 367 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE, 368 ZFS_TYPE_DATASET); 369 370 (void) fprintf(fp, "\t%-15s ", "userused@..."); 371 (void) fprintf(fp, " NO NO <size>\n"); 372 (void) fprintf(fp, "\t%-15s ", "groupused@..."); 373 (void) fprintf(fp, " NO NO <size>\n"); 374 (void) fprintf(fp, "\t%-15s ", "userquota@..."); 375 (void) fprintf(fp, "YES NO <size> | none\n"); 376 (void) fprintf(fp, "\t%-15s ", "groupquota@..."); 377 (void) fprintf(fp, "YES NO <size> | none\n"); 378 379 (void) fprintf(fp, gettext("\nSizes are specified in bytes " 380 "with standard units such as K, M, G, etc.\n")); 381 (void) fprintf(fp, gettext("\nUser-defined properties can " 382 "be specified by using a name containing a colon (:).\n")); 383 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ " 384 "properties must be appended with\n" 385 "a user or group specifier of one of these forms:\n" 386 " POSIX name (eg: \"matt\")\n" 387 " POSIX id (eg: \"126829\")\n" 388 " SMB name@domain (eg: \"matt@sun\")\n" 389 " SMB SID (eg: \"S-1-234-567-89\")\n")); 390 } else { 391 (void) fprintf(fp, 392 gettext("\nFor the property list, run: %s\n"), 393 "zfs set|get"); 394 (void) fprintf(fp, 395 gettext("\nFor the delegated permission list, run: %s\n"), 396 "zfs allow|unallow"); 397 } 398 399 /* 400 * See comments at end of main(). 401 */ 402 if (getenv("ZFS_ABORT") != NULL) { 403 (void) printf("dumping core by request\n"); 404 abort(); 405 } 406 407 exit(requested ? 0 : 2); 408} 409 410static int 411parseprop(nvlist_t *props) 412{ 413 char *propname = optarg; 414 char *propval, *strval; 415 416 if ((propval = strchr(propname, '=')) == NULL) { 417 (void) fprintf(stderr, gettext("missing " 418 "'=' for -o option\n")); 419 return (-1); 420 } 421 *propval = '\0'; 422 propval++; 423 if (nvlist_lookup_string(props, propname, &strval) == 0) { 424 (void) fprintf(stderr, gettext("property '%s' " 425 "specified multiple times\n"), propname); 426 return (-1); 427 } 428 if (nvlist_add_string(props, propname, propval) != 0) { 429 (void) fprintf(stderr, gettext("internal " 430 "error: out of memory\n")); 431 return (-1); 432 } 433 return (0); 434} 435 436static int 437parse_depth(char *opt, int *flags) 438{ 439 char *tmp; 440 int depth; 441 442 depth = (int)strtol(opt, &tmp, 0); 443 if (*tmp) { 444 (void) fprintf(stderr, 445 gettext("%s is not an integer\n"), optarg); 446 usage(B_FALSE); 447 } 448 if (depth < 0) { 449 (void) fprintf(stderr, 450 gettext("Depth can not be negative.\n")); 451 usage(B_FALSE); 452 } 453 *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE); 454 return (depth); 455} 456 457/* 458 * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol> 459 * 460 * Given an existing dataset, create a writable copy whose initial contents 461 * are the same as the source. The newly created dataset maintains a 462 * dependency on the original; the original cannot be destroyed so long as 463 * the clone exists. 464 * 465 * The '-p' flag creates all the non-existing ancestors of the target first. 466 */ 467static int 468zfs_do_clone(int argc, char **argv) 469{ 470 zfs_handle_t *zhp = NULL; 471 boolean_t parents = B_FALSE; 472 nvlist_t *props; 473 int ret; 474 int c; 475 476 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 477 (void) fprintf(stderr, gettext("internal error: " 478 "out of memory\n")); 479 return (1); 480 } 481 482 /* check options */ 483 while ((c = getopt(argc, argv, "o:p")) != -1) { 484 switch (c) { 485 case 'o': 486 if (parseprop(props)) 487 return (1); 488 break; 489 case 'p': 490 parents = B_TRUE; 491 break; 492 case '?': 493 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 494 optopt); 495 goto usage; 496 } 497 } 498 499 argc -= optind; 500 argv += optind; 501 502 /* check number of arguments */ 503 if (argc < 1) { 504 (void) fprintf(stderr, gettext("missing source dataset " 505 "argument\n")); 506 goto usage; 507 } 508 if (argc < 2) { 509 (void) fprintf(stderr, gettext("missing target dataset " 510 "argument\n")); 511 goto usage; 512 } 513 if (argc > 2) { 514 (void) fprintf(stderr, gettext("too many arguments\n")); 515 goto usage; 516 } 517 518 /* open the source dataset */ 519 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 520 return (1); 521 522 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM | 523 ZFS_TYPE_VOLUME)) { 524 /* 525 * Now create the ancestors of the target dataset. If the 526 * target already exists and '-p' option was used we should not 527 * complain. 528 */ 529 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | 530 ZFS_TYPE_VOLUME)) 531 return (0); 532 if (zfs_create_ancestors(g_zfs, argv[1]) != 0) 533 return (1); 534 } 535 536 /* pass to libzfs */ 537 ret = zfs_clone(zhp, argv[1], props); 538 539 /* create the mountpoint if necessary */ 540 if (ret == 0) { 541 zfs_handle_t *clone; 542 543 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET); 544 if (clone != NULL) { 545 if ((ret = zfs_mount(clone, NULL, 0)) == 0) 546 ret = zfs_share(clone); 547 zfs_close(clone); 548 } 549 } 550 551 zfs_close(zhp); 552 nvlist_free(props); 553 554 return (!!ret); 555 556usage: 557 if (zhp) 558 zfs_close(zhp); 559 nvlist_free(props); 560 usage(B_FALSE); 561 return (-1); 562} 563 564/* 565 * zfs create [-p] [-o prop=value] ... fs 566 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size 567 * 568 * Create a new dataset. This command can be used to create filesystems 569 * and volumes. Snapshot creation is handled by 'zfs snapshot'. 570 * For volumes, the user must specify a size to be used. 571 * 572 * The '-s' flag applies only to volumes, and indicates that we should not try 573 * to set the reservation for this volume. By default we set a reservation 574 * equal to the size for any volume. For pools with SPA_VERSION >= 575 * SPA_VERSION_REFRESERVATION, we set a refreservation instead. 576 * 577 * The '-p' flag creates all the non-existing ancestors of the target first. 578 */ 579static int 580zfs_do_create(int argc, char **argv) 581{ 582 zfs_type_t type = ZFS_TYPE_FILESYSTEM; 583 zfs_handle_t *zhp = NULL; 584 uint64_t volsize; 585 int c; 586 boolean_t noreserve = B_FALSE; 587 boolean_t bflag = B_FALSE; 588 boolean_t parents = B_FALSE; 589 int ret = 1; 590 nvlist_t *props; 591 uint64_t intval; 592 int canmount; 593 594 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 595 (void) fprintf(stderr, gettext("internal error: " 596 "out of memory\n")); 597 return (1); 598 } 599 600 /* check options */ 601 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) { 602 switch (c) { 603 case 'V': 604 type = ZFS_TYPE_VOLUME; 605 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 606 (void) fprintf(stderr, gettext("bad volume " 607 "size '%s': %s\n"), optarg, 608 libzfs_error_description(g_zfs)); 609 goto error; 610 } 611 612 if (nvlist_add_uint64(props, 613 zfs_prop_to_name(ZFS_PROP_VOLSIZE), 614 intval) != 0) { 615 (void) fprintf(stderr, gettext("internal " 616 "error: out of memory\n")); 617 goto error; 618 } 619 volsize = intval; 620 break; 621 case 'p': 622 parents = B_TRUE; 623 break; 624 case 'b': 625 bflag = B_TRUE; 626 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) { 627 (void) fprintf(stderr, gettext("bad volume " 628 "block size '%s': %s\n"), optarg, 629 libzfs_error_description(g_zfs)); 630 goto error; 631 } 632 633 if (nvlist_add_uint64(props, 634 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), 635 intval) != 0) { 636 (void) fprintf(stderr, gettext("internal " 637 "error: out of memory\n")); 638 goto error; 639 } 640 break; 641 case 'o': 642 if (parseprop(props)) 643 goto error; 644 break; 645 case 's': 646 noreserve = B_TRUE; 647 break; 648 case ':': 649 (void) fprintf(stderr, gettext("missing size " 650 "argument\n")); 651 goto badusage; 652 break; 653 case '?': 654 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 655 optopt); 656 goto badusage; 657 } 658 } 659 660 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) { 661 (void) fprintf(stderr, gettext("'-s' and '-b' can only be " 662 "used when creating a volume\n")); 663 goto badusage; 664 } 665 666 argc -= optind; 667 argv += optind; 668 669 /* check number of arguments */ 670 if (argc == 0) { 671 (void) fprintf(stderr, gettext("missing %s argument\n"), 672 zfs_type_to_name(type)); 673 goto badusage; 674 } 675 if (argc > 1) { 676 (void) fprintf(stderr, gettext("too many arguments\n")); 677 goto badusage; 678 } 679 680 if (type == ZFS_TYPE_VOLUME && !noreserve) { 681 zpool_handle_t *zpool_handle; 682 uint64_t spa_version; 683 char *p; 684 zfs_prop_t resv_prop; 685 char *strval; 686 687 if (p = strchr(argv[0], '/')) 688 *p = '\0'; 689 zpool_handle = zpool_open(g_zfs, argv[0]); 690 if (p != NULL) 691 *p = '/'; 692 if (zpool_handle == NULL) 693 goto error; 694 spa_version = zpool_get_prop_int(zpool_handle, 695 ZPOOL_PROP_VERSION, NULL); 696 zpool_close(zpool_handle); 697 if (spa_version >= SPA_VERSION_REFRESERVATION) 698 resv_prop = ZFS_PROP_REFRESERVATION; 699 else 700 resv_prop = ZFS_PROP_RESERVATION; 701 702 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop), 703 &strval) != 0) { 704 if (nvlist_add_uint64(props, 705 zfs_prop_to_name(resv_prop), volsize) != 0) { 706 (void) fprintf(stderr, gettext("internal " 707 "error: out of memory\n")); 708 nvlist_free(props); 709 return (1); 710 } 711 } 712 } 713 714 if (parents && zfs_name_valid(argv[0], type)) { 715 /* 716 * Now create the ancestors of target dataset. If the target 717 * already exists and '-p' option was used we should not 718 * complain. 719 */ 720 if (zfs_dataset_exists(g_zfs, argv[0], type)) { 721 ret = 0; 722 goto error; 723 } 724 if (zfs_create_ancestors(g_zfs, argv[0]) != 0) 725 goto error; 726 } 727 728 /* pass to libzfs */ 729 if (zfs_create(g_zfs, argv[0], type, props) != 0) 730 goto error; 731 732 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 733 goto error; 734 /* 735 * if the user doesn't want the dataset automatically mounted, 736 * then skip the mount/share step 737 */ 738 739 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 740 741 /* 742 * Mount and/or share the new filesystem as appropriate. We provide a 743 * verbose error message to let the user know that their filesystem was 744 * in fact created, even if we failed to mount or share it. 745 */ 746 ret = 0; 747 if (canmount == ZFS_CANMOUNT_ON) { 748 if (zfs_mount(zhp, NULL, 0) != 0) { 749 (void) fprintf(stderr, gettext("filesystem " 750 "successfully created, but not mounted\n")); 751 ret = 1; 752 } else if (zfs_share(zhp) != 0) { 753 (void) fprintf(stderr, gettext("filesystem " 754 "successfully created, but not shared\n")); 755 ret = 1; 756 } 757 } 758 759error: 760 if (zhp) 761 zfs_close(zhp); 762 nvlist_free(props); 763 return (ret); 764badusage: 765 nvlist_free(props); 766 usage(B_FALSE); 767 return (2); 768} 769 770/* 771 * zfs destroy [-rf] <fs, snap, vol> 772 * 773 * -r Recursively destroy all children 774 * -R Recursively destroy all dependents, including clones 775 * -f Force unmounting of any dependents 776 * 777 * Destroys the given dataset. By default, it will unmount any filesystems, 778 * and refuse to destroy a dataset that has any dependents. A dependent can 779 * either be a child, or a clone of a child. 780 */ 781typedef struct destroy_cbdata { 782 boolean_t cb_first; 783 int cb_force; 784 int cb_recurse; 785 int cb_error; 786 int cb_needforce; 787 int cb_doclones; 788 boolean_t cb_closezhp; 789 zfs_handle_t *cb_target; 790 char *cb_snapname; 791} destroy_cbdata_t; 792 793/* 794 * Check for any dependents based on the '-r' or '-R' flags. 795 */ 796static int 797destroy_check_dependent(zfs_handle_t *zhp, void *data) 798{ 799 destroy_cbdata_t *cbp = data; 800 const char *tname = zfs_get_name(cbp->cb_target); 801 const char *name = zfs_get_name(zhp); 802 803 if (strncmp(tname, name, strlen(tname)) == 0 && 804 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) { 805 /* 806 * This is a direct descendant, not a clone somewhere else in 807 * the hierarchy. 808 */ 809 if (cbp->cb_recurse) 810 goto out; 811 812 if (cbp->cb_first) { 813 (void) fprintf(stderr, gettext("cannot destroy '%s': " 814 "%s has children\n"), 815 zfs_get_name(cbp->cb_target), 816 zfs_type_to_name(zfs_get_type(cbp->cb_target))); 817 (void) fprintf(stderr, gettext("use '-r' to destroy " 818 "the following datasets:\n")); 819 cbp->cb_first = B_FALSE; 820 cbp->cb_error = 1; 821 } 822 823 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 824 } else { 825 /* 826 * This is a clone. We only want to report this if the '-r' 827 * wasn't specified, or the target is a snapshot. 828 */ 829 if (!cbp->cb_recurse && 830 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT) 831 goto out; 832 833 if (cbp->cb_first) { 834 (void) fprintf(stderr, gettext("cannot destroy '%s': " 835 "%s has dependent clones\n"), 836 zfs_get_name(cbp->cb_target), 837 zfs_type_to_name(zfs_get_type(cbp->cb_target))); 838 (void) fprintf(stderr, gettext("use '-R' to destroy " 839 "the following datasets:\n")); 840 cbp->cb_first = B_FALSE; 841 cbp->cb_error = 1; 842 } 843 844 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 845 } 846 847out: 848 zfs_close(zhp); 849 return (0); 850} 851 852static int 853destroy_callback(zfs_handle_t *zhp, void *data) 854{ 855 destroy_cbdata_t *cbp = data; 856 857 /* 858 * Ignore pools (which we've already flagged as an error before getting 859 * here. 860 */ 861 if (strchr(zfs_get_name(zhp), '/') == NULL && 862 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 863 zfs_close(zhp); 864 return (0); 865 } 866 867 /* 868 * Bail out on the first error. 869 */ 870 if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 || 871 zfs_destroy(zhp) != 0) { 872 zfs_close(zhp); 873 return (-1); 874 } 875 876 zfs_close(zhp); 877 return (0); 878} 879 880static int 881destroy_snap_clones(zfs_handle_t *zhp, void *arg) 882{ 883 destroy_cbdata_t *cbp = arg; 884 char thissnap[MAXPATHLEN]; 885 zfs_handle_t *szhp; 886 boolean_t closezhp = cbp->cb_closezhp; 887 int rv; 888 889 (void) snprintf(thissnap, sizeof (thissnap), 890 "%s@%s", zfs_get_name(zhp), cbp->cb_snapname); 891 892 libzfs_print_on_error(g_zfs, B_FALSE); 893 szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT); 894 libzfs_print_on_error(g_zfs, B_TRUE); 895 if (szhp) { 896 /* 897 * Destroy any clones of this snapshot 898 */ 899 if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback, 900 cbp) != 0) { 901 zfs_close(szhp); 902 if (closezhp) 903 zfs_close(zhp); 904 return (-1); 905 } 906 zfs_close(szhp); 907 } 908 909 cbp->cb_closezhp = B_TRUE; 910 rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg); 911 if (closezhp) 912 zfs_close(zhp); 913 return (rv); 914} 915 916static int 917zfs_do_destroy(int argc, char **argv) 918{ 919 destroy_cbdata_t cb = { 0 }; 920 int c; 921 zfs_handle_t *zhp; 922 char *cp; 923 924 /* check options */ 925 while ((c = getopt(argc, argv, "frR")) != -1) { 926 switch (c) { 927 case 'f': 928 cb.cb_force = 1; 929 break; 930 case 'r': 931 cb.cb_recurse = 1; 932 break; 933 case 'R': 934 cb.cb_recurse = 1; 935 cb.cb_doclones = 1; 936 break; 937 case '?': 938 default: 939 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 940 optopt); 941 usage(B_FALSE); 942 } 943 } 944 945 argc -= optind; 946 argv += optind; 947 948 /* check number of arguments */ 949 if (argc == 0) { 950 (void) fprintf(stderr, gettext("missing path argument\n")); 951 usage(B_FALSE); 952 } 953 if (argc > 1) { 954 (void) fprintf(stderr, gettext("too many arguments\n")); 955 usage(B_FALSE); 956 } 957 958 /* 959 * If we are doing recursive destroy of a snapshot, then the 960 * named snapshot may not exist. Go straight to libzfs. 961 */ 962 if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) { 963 int ret; 964 965 *cp = '\0'; 966 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 967 return (1); 968 *cp = '@'; 969 cp++; 970 971 if (cb.cb_doclones) { 972 cb.cb_snapname = cp; 973 if (destroy_snap_clones(zhp, &cb) != 0) { 974 zfs_close(zhp); 975 return (1); 976 } 977 } 978 979 ret = zfs_destroy_snaps(zhp, cp); 980 zfs_close(zhp); 981 if (ret) { 982 (void) fprintf(stderr, 983 gettext("no snapshots destroyed\n")); 984 } 985 return (ret != 0); 986 } 987 988 989 /* Open the given dataset */ 990 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL) 991 return (1); 992 993 cb.cb_target = zhp; 994 995 /* 996 * Perform an explicit check for pools before going any further. 997 */ 998 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL && 999 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 1000 (void) fprintf(stderr, gettext("cannot destroy '%s': " 1001 "operation does not apply to pools\n"), 1002 zfs_get_name(zhp)); 1003 (void) fprintf(stderr, gettext("use 'zfs destroy -r " 1004 "%s' to destroy all datasets in the pool\n"), 1005 zfs_get_name(zhp)); 1006 (void) fprintf(stderr, gettext("use 'zpool destroy %s' " 1007 "to destroy the pool itself\n"), zfs_get_name(zhp)); 1008 zfs_close(zhp); 1009 return (1); 1010 } 1011 1012 /* 1013 * Check for any dependents and/or clones. 1014 */ 1015 cb.cb_first = B_TRUE; 1016 if (!cb.cb_doclones && 1017 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent, 1018 &cb) != 0) { 1019 zfs_close(zhp); 1020 return (1); 1021 } 1022 1023 if (cb.cb_error || 1024 zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0) { 1025 zfs_close(zhp); 1026 return (1); 1027 } 1028 1029 /* 1030 * Do the real thing. The callback will close the handle regardless of 1031 * whether it succeeds or not. 1032 */ 1033 1034 if (destroy_callback(zhp, &cb) != 0) 1035 return (1); 1036 1037 1038 return (0); 1039} 1040 1041/* 1042 * zfs get [-rHp] [-o field[,field]...] [-s source[,source]...] 1043 * < all | property[,property]... > < fs | snap | vol > ... 1044 * 1045 * -r recurse over any child datasets 1046 * -H scripted mode. Headers are stripped, and fields are separated 1047 * by tabs instead of spaces. 1048 * -o Set of fields to display. One of "name,property,value,source". 1049 * Default is all four. 1050 * -s Set of sources to allow. One of 1051 * "local,default,inherited,temporary,none". Default is all 1052 * five. 1053 * -p Display values in parsable (literal) format. 1054 * 1055 * Prints properties for the given datasets. The user can control which 1056 * columns to display as well as which property types to allow. 1057 */ 1058 1059/* 1060 * Invoked to display the properties for a single dataset. 1061 */ 1062static int 1063get_callback(zfs_handle_t *zhp, void *data) 1064{ 1065 char buf[ZFS_MAXPROPLEN]; 1066 zprop_source_t sourcetype; 1067 char source[ZFS_MAXNAMELEN]; 1068 zprop_get_cbdata_t *cbp = data; 1069 nvlist_t *userprop = zfs_get_user_props(zhp); 1070 zprop_list_t *pl = cbp->cb_proplist; 1071 nvlist_t *propval; 1072 char *strval; 1073 char *sourceval; 1074 1075 for (; pl != NULL; pl = pl->pl_next) { 1076 /* 1077 * Skip the special fake placeholder. This will also skip over 1078 * the name property when 'all' is specified. 1079 */ 1080 if (pl->pl_prop == ZFS_PROP_NAME && 1081 pl == cbp->cb_proplist) 1082 continue; 1083 1084 if (pl->pl_prop != ZPROP_INVAL) { 1085 if (zfs_prop_get(zhp, pl->pl_prop, buf, 1086 sizeof (buf), &sourcetype, source, 1087 sizeof (source), 1088 cbp->cb_literal) != 0) { 1089 if (pl->pl_all) 1090 continue; 1091 if (!zfs_prop_valid_for_type(pl->pl_prop, 1092 ZFS_TYPE_DATASET)) { 1093 (void) fprintf(stderr, 1094 gettext("No such property '%s'\n"), 1095 zfs_prop_to_name(pl->pl_prop)); 1096 continue; 1097 } 1098 sourcetype = ZPROP_SRC_NONE; 1099 (void) strlcpy(buf, "-", sizeof (buf)); 1100 } 1101 1102 zprop_print_one_property(zfs_get_name(zhp), cbp, 1103 zfs_prop_to_name(pl->pl_prop), 1104 buf, sourcetype, source); 1105 } else if (zfs_prop_userquota(pl->pl_user_prop)) { 1106 sourcetype = ZPROP_SRC_LOCAL; 1107 1108 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop, 1109 buf, sizeof (buf), cbp->cb_literal) != 0) { 1110 sourcetype = ZPROP_SRC_NONE; 1111 (void) strlcpy(buf, "-", sizeof (buf)); 1112 } 1113 1114 zprop_print_one_property(zfs_get_name(zhp), cbp, 1115 pl->pl_user_prop, buf, sourcetype, source); 1116 } else { 1117 if (nvlist_lookup_nvlist(userprop, 1118 pl->pl_user_prop, &propval) != 0) { 1119 if (pl->pl_all) 1120 continue; 1121 sourcetype = ZPROP_SRC_NONE; 1122 strval = "-"; 1123 } else { 1124 verify(nvlist_lookup_string(propval, 1125 ZPROP_VALUE, &strval) == 0); 1126 verify(nvlist_lookup_string(propval, 1127 ZPROP_SOURCE, &sourceval) == 0); 1128 1129 if (strcmp(sourceval, 1130 zfs_get_name(zhp)) == 0) { 1131 sourcetype = ZPROP_SRC_LOCAL; 1132 } else { 1133 sourcetype = ZPROP_SRC_INHERITED; 1134 (void) strlcpy(source, 1135 sourceval, sizeof (source)); 1136 } 1137 } 1138 1139 zprop_print_one_property(zfs_get_name(zhp), cbp, 1140 pl->pl_user_prop, strval, sourcetype, 1141 source); 1142 } 1143 } 1144 1145 return (0); 1146} 1147 1148static int 1149zfs_do_get(int argc, char **argv) 1150{ 1151 zprop_get_cbdata_t cb = { 0 }; 1152 int i, c, flags = 0; 1153 char *value, *fields; 1154 int ret; 1155 int limit = 0; 1156 zprop_list_t fake_name = { 0 }; 1157 1158 /* 1159 * Set up default columns and sources. 1160 */ 1161 cb.cb_sources = ZPROP_SRC_ALL; 1162 cb.cb_columns[0] = GET_COL_NAME; 1163 cb.cb_columns[1] = GET_COL_PROPERTY; 1164 cb.cb_columns[2] = GET_COL_VALUE; 1165 cb.cb_columns[3] = GET_COL_SOURCE; 1166 cb.cb_type = ZFS_TYPE_DATASET; 1167 1168 /* check options */ 1169 while ((c = getopt(argc, argv, ":d:o:s:rHp")) != -1) { 1170 switch (c) { 1171 case 'p': 1172 cb.cb_literal = B_TRUE; 1173 break; 1174 case 'd': 1175 limit = parse_depth(optarg, &flags); 1176 break; 1177 case 'r': 1178 flags |= ZFS_ITER_RECURSE; 1179 break; 1180 case 'H': 1181 cb.cb_scripted = B_TRUE; 1182 break; 1183 case ':': 1184 (void) fprintf(stderr, gettext("missing argument for " 1185 "'%c' option\n"), optopt); 1186 usage(B_FALSE); 1187 break; 1188 case 'o': 1189 /* 1190 * Process the set of columns to display. We zero out 1191 * the structure to give us a blank slate. 1192 */ 1193 bzero(&cb.cb_columns, sizeof (cb.cb_columns)); 1194 i = 0; 1195 while (*optarg != '\0') { 1196 static char *col_subopts[] = 1197 { "name", "property", "value", "source", 1198 NULL }; 1199 1200 if (i == 4) { 1201 (void) fprintf(stderr, gettext("too " 1202 "many fields given to -o " 1203 "option\n")); 1204 usage(B_FALSE); 1205 } 1206 1207 switch (getsubopt(&optarg, col_subopts, 1208 &value)) { 1209 case 0: 1210 cb.cb_columns[i++] = GET_COL_NAME; 1211 break; 1212 case 1: 1213 cb.cb_columns[i++] = GET_COL_PROPERTY; 1214 break; 1215 case 2: 1216 cb.cb_columns[i++] = GET_COL_VALUE; 1217 break; 1218 case 3: 1219 cb.cb_columns[i++] = GET_COL_SOURCE; 1220 break; 1221 default: 1222 (void) fprintf(stderr, 1223 gettext("invalid column name " 1224 "'%s'\n"), value); 1225 usage(B_FALSE); 1226 } 1227 } 1228 break; 1229 1230 case 's': 1231 cb.cb_sources = 0; 1232 while (*optarg != '\0') { 1233 static char *source_subopts[] = { 1234 "local", "default", "inherited", 1235 "temporary", "none", NULL }; 1236 1237 switch (getsubopt(&optarg, source_subopts, 1238 &value)) { 1239 case 0: 1240 cb.cb_sources |= ZPROP_SRC_LOCAL; 1241 break; 1242 case 1: 1243 cb.cb_sources |= ZPROP_SRC_DEFAULT; 1244 break; 1245 case 2: 1246 cb.cb_sources |= ZPROP_SRC_INHERITED; 1247 break; 1248 case 3: 1249 cb.cb_sources |= ZPROP_SRC_TEMPORARY; 1250 break; 1251 case 4: 1252 cb.cb_sources |= ZPROP_SRC_NONE; 1253 break; 1254 default: 1255 (void) fprintf(stderr, 1256 gettext("invalid source " 1257 "'%s'\n"), value); 1258 usage(B_FALSE); 1259 } 1260 } 1261 break; 1262 1263 case '?': 1264 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1265 optopt); 1266 usage(B_FALSE); 1267 } 1268 } 1269 1270 argc -= optind; 1271 argv += optind; 1272 1273 if (argc < 1) { 1274 (void) fprintf(stderr, gettext("missing property " 1275 "argument\n")); 1276 usage(B_FALSE); 1277 } 1278 1279 fields = argv[0]; 1280 1281 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 1282 != 0) 1283 usage(B_FALSE); 1284 1285 argc--; 1286 argv++; 1287 1288 /* 1289 * As part of zfs_expand_proplist(), we keep track of the maximum column 1290 * width for each property. For the 'NAME' (and 'SOURCE') columns, we 1291 * need to know the maximum name length. However, the user likely did 1292 * not specify 'name' as one of the properties to fetch, so we need to 1293 * make sure we always include at least this property for 1294 * print_get_headers() to work properly. 1295 */ 1296 if (cb.cb_proplist != NULL) { 1297 fake_name.pl_prop = ZFS_PROP_NAME; 1298 fake_name.pl_width = strlen(gettext("NAME")); 1299 fake_name.pl_next = cb.cb_proplist; 1300 cb.cb_proplist = &fake_name; 1301 } 1302 1303 cb.cb_first = B_TRUE; 1304 1305 /* run for each object */ 1306 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, NULL, 1307 &cb.cb_proplist, limit, get_callback, &cb); 1308 1309 if (cb.cb_proplist == &fake_name) 1310 zprop_free_list(fake_name.pl_next); 1311 else 1312 zprop_free_list(cb.cb_proplist); 1313 1314 return (ret); 1315} 1316 1317/* 1318 * inherit [-r] <property> <fs|vol> ... 1319 * 1320 * -r Recurse over all children 1321 * 1322 * For each dataset specified on the command line, inherit the given property 1323 * from its parent. Inheriting a property at the pool level will cause it to 1324 * use the default value. The '-r' flag will recurse over all children, and is 1325 * useful for setting a property on a hierarchy-wide basis, regardless of any 1326 * local modifications for each dataset. 1327 */ 1328 1329static int 1330inherit_recurse_cb(zfs_handle_t *zhp, void *data) 1331{ 1332 char *propname = data; 1333 zfs_prop_t prop = zfs_name_to_prop(propname); 1334 1335 /* 1336 * If we're doing it recursively, then ignore properties that 1337 * are not valid for this type of dataset. 1338 */ 1339 if (prop != ZPROP_INVAL && 1340 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp))) 1341 return (0); 1342 1343 return (zfs_prop_inherit(zhp, propname) != 0); 1344} 1345 1346static int 1347inherit_cb(zfs_handle_t *zhp, void *data) 1348{ 1349 char *propname = data; 1350 1351 return (zfs_prop_inherit(zhp, propname) != 0); 1352} 1353 1354static int 1355zfs_do_inherit(int argc, char **argv) 1356{ 1357 int c; 1358 zfs_prop_t prop; 1359 char *propname; 1360 int ret; 1361 int flags = 0; 1362 1363 /* check options */ 1364 while ((c = getopt(argc, argv, "r")) != -1) { 1365 switch (c) { 1366 case 'r': 1367 flags |= ZFS_ITER_RECURSE; 1368 break; 1369 case '?': 1370 default: 1371 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1372 optopt); 1373 usage(B_FALSE); 1374 } 1375 } 1376 1377 argc -= optind; 1378 argv += optind; 1379 1380 /* check number of arguments */ 1381 if (argc < 1) { 1382 (void) fprintf(stderr, gettext("missing property argument\n")); 1383 usage(B_FALSE); 1384 } 1385 if (argc < 2) { 1386 (void) fprintf(stderr, gettext("missing dataset argument\n")); 1387 usage(B_FALSE); 1388 } 1389 1390 propname = argv[0]; 1391 argc--; 1392 argv++; 1393 1394 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) { 1395 if (zfs_prop_readonly(prop)) { 1396 (void) fprintf(stderr, gettext( 1397 "%s property is read-only\n"), 1398 propname); 1399 return (1); 1400 } 1401 if (!zfs_prop_inheritable(prop)) { 1402 (void) fprintf(stderr, gettext("'%s' property cannot " 1403 "be inherited\n"), propname); 1404 if (prop == ZFS_PROP_QUOTA || 1405 prop == ZFS_PROP_RESERVATION || 1406 prop == ZFS_PROP_REFQUOTA || 1407 prop == ZFS_PROP_REFRESERVATION) 1408 (void) fprintf(stderr, gettext("use 'zfs set " 1409 "%s=none' to clear\n"), propname); 1410 return (1); 1411 } 1412 } else if (!zfs_prop_user(propname)) { 1413 (void) fprintf(stderr, gettext("invalid property '%s'\n"), 1414 propname); 1415 usage(B_FALSE); 1416 } 1417 1418 if (flags & ZFS_ITER_RECURSE) { 1419 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, 1420 NULL, NULL, 0, inherit_recurse_cb, propname); 1421 } else { 1422 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, 1423 NULL, NULL, 0, inherit_cb, propname); 1424 } 1425 1426 return (ret); 1427} 1428 1429typedef struct upgrade_cbdata { 1430 uint64_t cb_numupgraded; 1431 uint64_t cb_numsamegraded; 1432 uint64_t cb_numfailed; 1433 uint64_t cb_version; 1434 boolean_t cb_newer; 1435 boolean_t cb_foundone; 1436 char cb_lastfs[ZFS_MAXNAMELEN]; 1437} upgrade_cbdata_t; 1438 1439static int 1440same_pool(zfs_handle_t *zhp, const char *name) 1441{ 1442 int len1 = strcspn(name, "/@"); 1443 const char *zhname = zfs_get_name(zhp); 1444 int len2 = strcspn(zhname, "/@"); 1445 1446 if (len1 != len2) 1447 return (B_FALSE); 1448 return (strncmp(name, zhname, len1) == 0); 1449} 1450 1451static int 1452upgrade_list_callback(zfs_handle_t *zhp, void *data) 1453{ 1454 upgrade_cbdata_t *cb = data; 1455 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1456 1457 /* list if it's old/new */ 1458 if ((!cb->cb_newer && version < ZPL_VERSION) || 1459 (cb->cb_newer && version > ZPL_VERSION)) { 1460 char *str; 1461 if (cb->cb_newer) { 1462 str = gettext("The following filesystems are " 1463 "formatted using a newer software version and\n" 1464 "cannot be accessed on the current system.\n\n"); 1465 } else { 1466 str = gettext("The following filesystems are " 1467 "out of date, and can be upgraded. After being\n" 1468 "upgraded, these filesystems (and any 'zfs send' " 1469 "streams generated from\n" 1470 "subsequent snapshots) will no longer be " 1471 "accessible by older software versions.\n\n"); 1472 } 1473 1474 if (!cb->cb_foundone) { 1475 (void) puts(str); 1476 (void) printf(gettext("VER FILESYSTEM\n")); 1477 (void) printf(gettext("--- ------------\n")); 1478 cb->cb_foundone = B_TRUE; 1479 } 1480 1481 (void) printf("%2u %s\n", version, zfs_get_name(zhp)); 1482 } 1483 1484 return (0); 1485} 1486 1487static int 1488upgrade_set_callback(zfs_handle_t *zhp, void *data) 1489{ 1490 upgrade_cbdata_t *cb = data; 1491 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); 1492 int i; 1493 static struct { int zplver; int spaver; } table[] = { 1494 {ZPL_VERSION_FUID, SPA_VERSION_FUID}, 1495 {ZPL_VERSION_USERSPACE, SPA_VERSION_USERSPACE}, 1496 {0, 0} 1497 }; 1498 1499 1500 for (i = 0; table[i].zplver; i++) { 1501 if (cb->cb_version >= table[i].zplver) { 1502 int spa_version; 1503 1504 if (zfs_spa_version(zhp, &spa_version) < 0) 1505 return (-1); 1506 1507 if (spa_version < table[i].spaver) { 1508 /* can't upgrade */ 1509 (void) printf(gettext("%s: can not be " 1510 "upgraded; the pool version needs to first " 1511 "be upgraded\nto version %d\n\n"), 1512 zfs_get_name(zhp), table[i].spaver); 1513 cb->cb_numfailed++; 1514 return (0); 1515 } 1516 } 1517 } 1518 1519 /* upgrade */ 1520 if (version < cb->cb_version) { 1521 char verstr[16]; 1522 (void) snprintf(verstr, sizeof (verstr), 1523 "%llu", cb->cb_version); 1524 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) { 1525 /* 1526 * If they did "zfs upgrade -a", then we could 1527 * be doing ioctls to different pools. We need 1528 * to log this history once to each pool. 1529 */ 1530 verify(zpool_stage_history(g_zfs, history_str) == 0); 1531 } 1532 if (zfs_prop_set(zhp, "version", verstr) == 0) 1533 cb->cb_numupgraded++; 1534 else 1535 cb->cb_numfailed++; 1536 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp)); 1537 } else if (version > cb->cb_version) { 1538 /* can't downgrade */ 1539 (void) printf(gettext("%s: can not be downgraded; " 1540 "it is already at version %u\n"), 1541 zfs_get_name(zhp), version); 1542 cb->cb_numfailed++; 1543 } else { 1544 cb->cb_numsamegraded++; 1545 } 1546 return (0); 1547} 1548 1549/* 1550 * zfs upgrade 1551 * zfs upgrade -v 1552 * zfs upgrade [-r] [-V <version>] <-a | filesystem> 1553 */ 1554static int 1555zfs_do_upgrade(int argc, char **argv) 1556{ 1557 boolean_t all = B_FALSE; 1558 boolean_t showversions = B_FALSE; 1559 int ret; 1560 upgrade_cbdata_t cb = { 0 }; 1561 char c; 1562 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS; 1563 1564 /* check options */ 1565 while ((c = getopt(argc, argv, "rvV:a")) != -1) { 1566 switch (c) { 1567 case 'r': 1568 flags |= ZFS_ITER_RECURSE; 1569 break; 1570 case 'v': 1571 showversions = B_TRUE; 1572 break; 1573 case 'V': 1574 if (zfs_prop_string_to_index(ZFS_PROP_VERSION, 1575 optarg, &cb.cb_version) != 0) { 1576 (void) fprintf(stderr, 1577 gettext("invalid version %s\n"), optarg); 1578 usage(B_FALSE); 1579 } 1580 break; 1581 case 'a': 1582 all = B_TRUE; 1583 break; 1584 case '?': 1585 default: 1586 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1587 optopt); 1588 usage(B_FALSE); 1589 } 1590 } 1591 1592 argc -= optind; 1593 argv += optind; 1594 1595 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version)) 1596 usage(B_FALSE); 1597 if (showversions && (flags & ZFS_ITER_RECURSE || all || 1598 cb.cb_version || argc)) 1599 usage(B_FALSE); 1600 if ((all || argc) && (showversions)) 1601 usage(B_FALSE); 1602 if (all && argc) 1603 usage(B_FALSE); 1604 1605 if (showversions) { 1606 /* Show info on available versions. */ 1607 (void) printf(gettext("The following filesystem versions are " 1608 "supported:\n\n")); 1609 (void) printf(gettext("VER DESCRIPTION\n")); 1610 (void) printf("--- -----------------------------------------" 1611 "---------------\n"); 1612 (void) printf(gettext(" 1 Initial ZFS filesystem version\n")); 1613 (void) printf(gettext(" 2 Enhanced directory entries\n")); 1614 (void) printf(gettext(" 3 Case insensitive and File system " 1615 "unique identifer (FUID)\n")); 1616 (void) printf(gettext(" 4 userquota, groupquota " 1617 "properties\n")); 1618 (void) printf(gettext("\nFor more information on a particular " 1619 "version, including supported releases, see:\n\n")); 1620 (void) printf("http://www.opensolaris.org/os/community/zfs/" 1621 "version/zpl/N\n\n"); 1622 (void) printf(gettext("Where 'N' is the version number.\n")); 1623 ret = 0; 1624 } else if (argc || all) { 1625 /* Upgrade filesystems */ 1626 if (cb.cb_version == 0) 1627 cb.cb_version = ZPL_VERSION; 1628 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM, 1629 NULL, NULL, 0, upgrade_set_callback, &cb); 1630 (void) printf(gettext("%llu filesystems upgraded\n"), 1631 cb.cb_numupgraded); 1632 if (cb.cb_numsamegraded) { 1633 (void) printf(gettext("%llu filesystems already at " 1634 "this version\n"), 1635 cb.cb_numsamegraded); 1636 } 1637 if (cb.cb_numfailed != 0) 1638 ret = 1; 1639 } else { 1640 /* List old-version filesytems */ 1641 boolean_t found; 1642 (void) printf(gettext("This system is currently running " 1643 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION); 1644 1645 flags |= ZFS_ITER_RECURSE; 1646 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM, 1647 NULL, NULL, 0, upgrade_list_callback, &cb); 1648 1649 found = cb.cb_foundone; 1650 cb.cb_foundone = B_FALSE; 1651 cb.cb_newer = B_TRUE; 1652 1653 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM, 1654 NULL, NULL, 0, upgrade_list_callback, &cb); 1655 1656 if (!cb.cb_foundone && !found) { 1657 (void) printf(gettext("All filesystems are " 1658 "formatted with the current version.\n")); 1659 } 1660 } 1661 1662 return (ret); 1663} 1664 1665/* 1666 * zfs userspace 1667 */ 1668static void 1669userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space) 1670{ 1671 zfs_userquota_prop_t *typep = arg; 1672 zfs_userquota_prop_t p = *typep; 1673 char *name, *ug, *propname; 1674 char namebuf[32]; 1675 char sizebuf[32]; 1676 1677 if (domain == NULL || domain[0] == '\0') { 1678 if (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) { 1679 struct group *g = getgrgid(rid); 1680 if (g) 1681 name = g->gr_name; 1682 } else { 1683 struct passwd *p = getpwuid(rid); 1684 if (p) 1685 name = p->pw_name; 1686 } 1687 } 1688 1689 if (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) 1690 ug = "group"; 1691 else 1692 ug = "user"; 1693 1694 if (p == ZFS_PROP_USERUSED || p == ZFS_PROP_GROUPUSED) 1695 propname = "used"; 1696 else 1697 propname = "quota"; 1698 1699 if (!name) { 1700 (void) snprintf(namebuf, sizeof (namebuf), 1701 "%llu", (longlong_t)rid); 1702 name = namebuf; 1703 } 1704 zfs_nicenum(space, sizebuf, sizeof (sizebuf)); 1705 1706 (void) printf("%s %s %s%c%s %s\n", propname, ug, domain, 1707 domain[0] ? '-' : ' ', name, sizebuf); 1708} 1709 1710static int 1711zfs_do_userspace(int argc, char **argv) 1712{ 1713 zfs_handle_t *zhp; 1714 zfs_userquota_prop_t p; 1715 int error; 1716 1717 /* 1718 * Try the python version. If the execv fails, we'll continue 1719 * and do a simplistic implementation. 1720 */ 1721 (void) execv(pypath, argv-1); 1722 1723 (void) printf("internal error: %s not found\n" 1724 "falling back on built-in implementation, " 1725 "some features will not work\n", pypath); 1726 1727 if ((zhp = zfs_open(g_zfs, argv[argc-1], ZFS_TYPE_DATASET)) == NULL) 1728 return (1); 1729 1730 (void) printf("PROP TYPE NAME VALUE\n"); 1731 1732 for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) { 1733 error = zfs_userspace(zhp, p, userspace_cb, &p); 1734 if (error) 1735 break; 1736 } 1737 return (error); 1738} 1739 1740/* 1741 * list [-r][-d max] [-H] [-o property[,property]...] [-t type[,type]...] 1742 * [-s property [-s property]...] [-S property [-S property]...] 1743 * <dataset> ... 1744 * 1745 * -r Recurse over all children 1746 * -d Limit recursion by depth. 1747 * -H Scripted mode; elide headers and separate columns by tabs 1748 * -o Control which fields to display. 1749 * -t Control which object types to display. 1750 * -s Specify sort columns, descending order. 1751 * -S Specify sort columns, ascending order. 1752 * 1753 * When given no arguments, lists all filesystems in the system. 1754 * Otherwise, list the specified datasets, optionally recursing down them if 1755 * '-r' is specified. 1756 */ 1757typedef struct list_cbdata { 1758 boolean_t cb_first; 1759 boolean_t cb_scripted; 1760 zprop_list_t *cb_proplist; 1761} list_cbdata_t; 1762 1763/* 1764 * Given a list of columns to display, output appropriate headers for each one. 1765 */ 1766static void 1767print_header(zprop_list_t *pl) 1768{ 1769 char headerbuf[ZFS_MAXPROPLEN]; 1770 const char *header; 1771 int i; 1772 boolean_t first = B_TRUE; 1773 boolean_t right_justify; 1774 1775 for (; pl != NULL; pl = pl->pl_next) { 1776 if (!first) { 1777 (void) printf(" "); 1778 } else { 1779 first = B_FALSE; 1780 } 1781 1782 right_justify = B_FALSE; 1783 if (pl->pl_prop != ZPROP_INVAL) { 1784 header = zfs_prop_column_name(pl->pl_prop); 1785 right_justify = zfs_prop_align_right(pl->pl_prop); 1786 } else { 1787 for (i = 0; pl->pl_user_prop[i] != '\0'; i++) 1788 headerbuf[i] = toupper(pl->pl_user_prop[i]); 1789 headerbuf[i] = '\0'; 1790 header = headerbuf; 1791 } 1792 1793 if (pl->pl_next == NULL && !right_justify) 1794 (void) printf("%s", header); 1795 else if (right_justify) 1796 (void) printf("%*s", pl->pl_width, header); 1797 else 1798 (void) printf("%-*s", pl->pl_width, header); 1799 } 1800 1801 (void) printf("\n"); 1802} 1803 1804/* 1805 * Given a dataset and a list of fields, print out all the properties according 1806 * to the described layout. 1807 */ 1808static void 1809print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted) 1810{ 1811 boolean_t first = B_TRUE; 1812 char property[ZFS_MAXPROPLEN]; 1813 nvlist_t *userprops = zfs_get_user_props(zhp); 1814 nvlist_t *propval; 1815 char *propstr; 1816 boolean_t right_justify; 1817 int width; 1818 1819 for (; pl != NULL; pl = pl->pl_next) { 1820 if (!first) { 1821 if (scripted) 1822 (void) printf("\t"); 1823 else 1824 (void) printf(" "); 1825 } else { 1826 first = B_FALSE; 1827 } 1828 1829 if (pl->pl_prop != ZPROP_INVAL) { 1830 if (zfs_prop_get(zhp, pl->pl_prop, property, 1831 sizeof (property), NULL, NULL, 0, B_FALSE) != 0) 1832 propstr = "-"; 1833 else 1834 propstr = property; 1835 1836 right_justify = zfs_prop_align_right(pl->pl_prop); 1837 } else if (zfs_prop_userquota(pl->pl_user_prop)) { 1838 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop, 1839 property, sizeof (property), B_FALSE) != 0) 1840 propstr = "-"; 1841 else 1842 propstr = property; 1843 right_justify = B_TRUE; 1844 } else { 1845 if (nvlist_lookup_nvlist(userprops, 1846 pl->pl_user_prop, &propval) != 0) 1847 propstr = "-"; 1848 else 1849 verify(nvlist_lookup_string(propval, 1850 ZPROP_VALUE, &propstr) == 0); 1851 right_justify = B_FALSE; 1852 } 1853 1854 width = pl->pl_width; 1855 1856 /* 1857 * If this is being called in scripted mode, or if this is the 1858 * last column and it is left-justified, don't include a width 1859 * format specifier. 1860 */ 1861 if (scripted || (pl->pl_next == NULL && !right_justify)) 1862 (void) printf("%s", propstr); 1863 else if (right_justify) 1864 (void) printf("%*s", width, propstr); 1865 else 1866 (void) printf("%-*s", width, propstr); 1867 } 1868 1869 (void) printf("\n"); 1870} 1871 1872/* 1873 * Generic callback function to list a dataset or snapshot. 1874 */ 1875static int 1876list_callback(zfs_handle_t *zhp, void *data) 1877{ 1878 list_cbdata_t *cbp = data; 1879 1880 if (cbp->cb_first) { 1881 if (!cbp->cb_scripted) 1882 print_header(cbp->cb_proplist); 1883 cbp->cb_first = B_FALSE; 1884 } 1885 1886 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted); 1887 1888 return (0); 1889} 1890 1891static int 1892zfs_do_list(int argc, char **argv) 1893{ 1894 int c; 1895 boolean_t scripted = B_FALSE; 1896 static char default_fields[] = 1897 "name,used,available,referenced,mountpoint"; 1898 int types = ZFS_TYPE_DATASET; 1899 boolean_t types_specified = B_FALSE; 1900 char *fields = NULL; 1901 list_cbdata_t cb = { 0 }; 1902 char *value; 1903 int limit = 0; 1904 int ret; 1905 zfs_sort_column_t *sortcol = NULL; 1906 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS; 1907 1908 /* check options */ 1909 while ((c = getopt(argc, argv, ":d:o:rt:Hs:S:")) != -1) { 1910 switch (c) { 1911 case 'o': 1912 fields = optarg; 1913 break; 1914 case 'd': 1915 limit = parse_depth(optarg, &flags); 1916 break; 1917 case 'r': 1918 flags |= ZFS_ITER_RECURSE; 1919 break; 1920 case 'H': 1921 scripted = B_TRUE; 1922 break; 1923 case 's': 1924 if (zfs_add_sort_column(&sortcol, optarg, 1925 B_FALSE) != 0) { 1926 (void) fprintf(stderr, 1927 gettext("invalid property '%s'\n"), optarg); 1928 usage(B_FALSE); 1929 } 1930 break; 1931 case 'S': 1932 if (zfs_add_sort_column(&sortcol, optarg, 1933 B_TRUE) != 0) { 1934 (void) fprintf(stderr, 1935 gettext("invalid property '%s'\n"), optarg); 1936 usage(B_FALSE); 1937 } 1938 break; 1939 case 't': 1940 types = 0; 1941 types_specified = B_TRUE; 1942 flags &= ~ZFS_ITER_PROP_LISTSNAPS; 1943 while (*optarg != '\0') { 1944 static char *type_subopts[] = { "filesystem", 1945 "volume", "snapshot", "all", NULL }; 1946 1947 switch (getsubopt(&optarg, type_subopts, 1948 &value)) { 1949 case 0: 1950 types |= ZFS_TYPE_FILESYSTEM; 1951 break; 1952 case 1: 1953 types |= ZFS_TYPE_VOLUME; 1954 break; 1955 case 2: 1956 types |= ZFS_TYPE_SNAPSHOT; 1957 break; 1958 case 3: 1959 types = ZFS_TYPE_DATASET; 1960 break; 1961 1962 default: 1963 (void) fprintf(stderr, 1964 gettext("invalid type '%s'\n"), 1965 value); 1966 usage(B_FALSE); 1967 } 1968 } 1969 break; 1970 case ':': 1971 (void) fprintf(stderr, gettext("missing argument for " 1972 "'%c' option\n"), optopt); 1973 usage(B_FALSE); 1974 break; 1975 case '?': 1976 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 1977 optopt); 1978 usage(B_FALSE); 1979 } 1980 } 1981 1982 argc -= optind; 1983 argv += optind; 1984 1985 if (fields == NULL) 1986 fields = default_fields; 1987 1988 /* 1989 * If "-o space" and no types were specified, don't display snapshots. 1990 */ 1991 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE) 1992 types &= ~ZFS_TYPE_SNAPSHOT; 1993 1994 /* 1995 * If the user specifies '-o all', the zprop_get_list() doesn't 1996 * normally include the name of the dataset. For 'zfs list', we always 1997 * want this property to be first. 1998 */ 1999 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET) 2000 != 0) 2001 usage(B_FALSE); 2002 2003 cb.cb_scripted = scripted; 2004 cb.cb_first = B_TRUE; 2005 2006 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist, 2007 limit, list_callback, &cb); 2008 2009 zprop_free_list(cb.cb_proplist); 2010 zfs_free_sort_columns(sortcol); 2011 2012 if (ret == 0 && cb.cb_first && !cb.cb_scripted) 2013 (void) printf(gettext("no datasets available\n")); 2014 2015 return (ret); 2016} 2017 2018/* 2019 * zfs rename <fs | snap | vol> <fs | snap | vol> 2020 * zfs rename -p <fs | vol> <fs | vol> 2021 * zfs rename -r <snap> <snap> 2022 * 2023 * Renames the given dataset to another of the same type. 2024 * 2025 * The '-p' flag creates all the non-existing ancestors of the target first. 2026 */ 2027/* ARGSUSED */ 2028static int 2029zfs_do_rename(int argc, char **argv) 2030{ 2031 zfs_handle_t *zhp; 2032 int c; 2033 int ret; 2034 boolean_t recurse = B_FALSE; 2035 boolean_t parents = B_FALSE; 2036 2037 /* check options */ 2038 while ((c = getopt(argc, argv, "pr")) != -1) { 2039 switch (c) { 2040 case 'p': 2041 parents = B_TRUE; 2042 break; 2043 case 'r': 2044 recurse = B_TRUE; 2045 break; 2046 case '?': 2047 default: 2048 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2049 optopt); 2050 usage(B_FALSE); 2051 } 2052 } 2053 2054 argc -= optind; 2055 argv += optind; 2056 2057 /* check number of arguments */ 2058 if (argc < 1) { 2059 (void) fprintf(stderr, gettext("missing source dataset " 2060 "argument\n")); 2061 usage(B_FALSE); 2062 } 2063 if (argc < 2) { 2064 (void) fprintf(stderr, gettext("missing target dataset " 2065 "argument\n")); 2066 usage(B_FALSE); 2067 } 2068 if (argc > 2) { 2069 (void) fprintf(stderr, gettext("too many arguments\n")); 2070 usage(B_FALSE); 2071 } 2072 2073 if (recurse && parents) { 2074 (void) fprintf(stderr, gettext("-p and -r options are mutually " 2075 "exclusive\n")); 2076 usage(B_FALSE); 2077 } 2078 2079 if (recurse && strchr(argv[0], '@') == 0) { 2080 (void) fprintf(stderr, gettext("source dataset for recursive " 2081 "rename must be a snapshot\n")); 2082 usage(B_FALSE); 2083 } 2084 2085 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM | 2086 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL) 2087 return (1); 2088 2089 /* If we were asked and the name looks good, try to create ancestors. */ 2090 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) && 2091 zfs_create_ancestors(g_zfs, argv[1]) != 0) { 2092 zfs_close(zhp); 2093 return (1); 2094 } 2095 2096 ret = (zfs_rename(zhp, argv[1], recurse) != 0); 2097 2098 zfs_close(zhp); 2099 return (ret); 2100} 2101 2102/* 2103 * zfs promote <fs> 2104 * 2105 * Promotes the given clone fs to be the parent 2106 */ 2107/* ARGSUSED */ 2108static int 2109zfs_do_promote(int argc, char **argv) 2110{ 2111 zfs_handle_t *zhp; 2112 int ret; 2113 2114 /* check options */ 2115 if (argc > 1 && argv[1][0] == '-') { 2116 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2117 argv[1][1]); 2118 usage(B_FALSE); 2119 } 2120 2121 /* check number of arguments */ 2122 if (argc < 2) { 2123 (void) fprintf(stderr, gettext("missing clone filesystem" 2124 " argument\n")); 2125 usage(B_FALSE); 2126 } 2127 if (argc > 2) { 2128 (void) fprintf(stderr, gettext("too many arguments\n")); 2129 usage(B_FALSE); 2130 } 2131 2132 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2133 if (zhp == NULL) 2134 return (1); 2135 2136 ret = (zfs_promote(zhp) != 0); 2137 2138 2139 zfs_close(zhp); 2140 return (ret); 2141} 2142 2143/* 2144 * zfs rollback [-rRf] <snapshot> 2145 * 2146 * -r Delete any intervening snapshots before doing rollback 2147 * -R Delete any snapshots and their clones 2148 * -f ignored for backwards compatability 2149 * 2150 * Given a filesystem, rollback to a specific snapshot, discarding any changes 2151 * since then and making it the active dataset. If more recent snapshots exist, 2152 * the command will complain unless the '-r' flag is given. 2153 */ 2154typedef struct rollback_cbdata { 2155 uint64_t cb_create; 2156 boolean_t cb_first; 2157 int cb_doclones; 2158 char *cb_target; 2159 int cb_error; 2160 boolean_t cb_recurse; 2161 boolean_t cb_dependent; 2162} rollback_cbdata_t; 2163 2164/* 2165 * Report any snapshots more recent than the one specified. Used when '-r' is 2166 * not specified. We reuse this same callback for the snapshot dependents - if 2167 * 'cb_dependent' is set, then this is a dependent and we should report it 2168 * without checking the transaction group. 2169 */ 2170static int 2171rollback_check(zfs_handle_t *zhp, void *data) 2172{ 2173 rollback_cbdata_t *cbp = data; 2174 2175 if (cbp->cb_doclones) { 2176 zfs_close(zhp); 2177 return (0); 2178 } 2179 2180 if (!cbp->cb_dependent) { 2181 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 && 2182 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && 2183 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > 2184 cbp->cb_create) { 2185 2186 if (cbp->cb_first && !cbp->cb_recurse) { 2187 (void) fprintf(stderr, gettext("cannot " 2188 "rollback to '%s': more recent snapshots " 2189 "exist\n"), 2190 cbp->cb_target); 2191 (void) fprintf(stderr, gettext("use '-r' to " 2192 "force deletion of the following " 2193 "snapshots:\n")); 2194 cbp->cb_first = 0; 2195 cbp->cb_error = 1; 2196 } 2197 2198 if (cbp->cb_recurse) { 2199 cbp->cb_dependent = B_TRUE; 2200 if (zfs_iter_dependents(zhp, B_TRUE, 2201 rollback_check, cbp) != 0) { 2202 zfs_close(zhp); 2203 return (-1); 2204 } 2205 cbp->cb_dependent = B_FALSE; 2206 } else { 2207 (void) fprintf(stderr, "%s\n", 2208 zfs_get_name(zhp)); 2209 } 2210 } 2211 } else { 2212 if (cbp->cb_first && cbp->cb_recurse) { 2213 (void) fprintf(stderr, gettext("cannot rollback to " 2214 "'%s': clones of previous snapshots exist\n"), 2215 cbp->cb_target); 2216 (void) fprintf(stderr, gettext("use '-R' to " 2217 "force deletion of the following clones and " 2218 "dependents:\n")); 2219 cbp->cb_first = 0; 2220 cbp->cb_error = 1; 2221 } 2222 2223 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp)); 2224 } 2225 2226 zfs_close(zhp); 2227 return (0); 2228} 2229 2230static int 2231zfs_do_rollback(int argc, char **argv) 2232{ 2233 int ret; 2234 int c; 2235 boolean_t force = B_FALSE; 2236 rollback_cbdata_t cb = { 0 }; 2237 zfs_handle_t *zhp, *snap; 2238 char parentname[ZFS_MAXNAMELEN]; 2239 char *delim; 2240 2241 /* check options */ 2242 while ((c = getopt(argc, argv, "rRf")) != -1) { 2243 switch (c) { 2244 case 'r': 2245 cb.cb_recurse = 1; 2246 break; 2247 case 'R': 2248 cb.cb_recurse = 1; 2249 cb.cb_doclones = 1; 2250 break; 2251 case 'f': 2252 force = B_TRUE; 2253 break; 2254 case '?': 2255 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2256 optopt); 2257 usage(B_FALSE); 2258 } 2259 } 2260 2261 argc -= optind; 2262 argv += optind; 2263 2264 /* check number of arguments */ 2265 if (argc < 1) { 2266 (void) fprintf(stderr, gettext("missing dataset argument\n")); 2267 usage(B_FALSE); 2268 } 2269 if (argc > 1) { 2270 (void) fprintf(stderr, gettext("too many arguments\n")); 2271 usage(B_FALSE); 2272 } 2273 2274 /* open the snapshot */ 2275 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) 2276 return (1); 2277 2278 /* open the parent dataset */ 2279 (void) strlcpy(parentname, argv[0], sizeof (parentname)); 2280 verify((delim = strrchr(parentname, '@')) != NULL); 2281 *delim = '\0'; 2282 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) { 2283 zfs_close(snap); 2284 return (1); 2285 } 2286 2287 /* 2288 * Check for more recent snapshots and/or clones based on the presence 2289 * of '-r' and '-R'. 2290 */ 2291 cb.cb_target = argv[0]; 2292 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); 2293 cb.cb_first = B_TRUE; 2294 cb.cb_error = 0; 2295 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0) 2296 goto out; 2297 2298 if ((ret = cb.cb_error) != 0) 2299 goto out; 2300 2301 /* 2302 * Rollback parent to the given snapshot. 2303 */ 2304 ret = zfs_rollback(zhp, snap, force); 2305 2306out: 2307 zfs_close(snap); 2308 zfs_close(zhp); 2309 2310 if (ret == 0) 2311 return (0); 2312 else 2313 return (1); 2314} 2315 2316/* 2317 * zfs set property=value { fs | snap | vol } ... 2318 * 2319 * Sets the given property for all datasets specified on the command line. 2320 */ 2321typedef struct set_cbdata { 2322 char *cb_propname; 2323 char *cb_value; 2324} set_cbdata_t; 2325 2326static int 2327set_callback(zfs_handle_t *zhp, void *data) 2328{ 2329 set_cbdata_t *cbp = data; 2330 2331 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) { 2332 switch (libzfs_errno(g_zfs)) { 2333 case EZFS_MOUNTFAILED: 2334 (void) fprintf(stderr, gettext("property may be set " 2335 "but unable to remount filesystem\n")); 2336 break; 2337 case EZFS_SHARENFSFAILED: 2338 (void) fprintf(stderr, gettext("property may be set " 2339 "but unable to reshare filesystem\n")); 2340 break; 2341 } 2342 return (1); 2343 } 2344 return (0); 2345} 2346 2347static int 2348zfs_do_set(int argc, char **argv) 2349{ 2350 set_cbdata_t cb; 2351 int ret; 2352 2353 /* check for options */ 2354 if (argc > 1 && argv[1][0] == '-') { 2355 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2356 argv[1][1]); 2357 usage(B_FALSE); 2358 } 2359 2360 /* check number of arguments */ 2361 if (argc < 2) { 2362 (void) fprintf(stderr, gettext("missing property=value " 2363 "argument\n")); 2364 usage(B_FALSE); 2365 } 2366 if (argc < 3) { 2367 (void) fprintf(stderr, gettext("missing dataset name\n")); 2368 usage(B_FALSE); 2369 } 2370 2371 /* validate property=value argument */ 2372 cb.cb_propname = argv[1]; 2373 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) || 2374 (cb.cb_value[1] == '\0')) { 2375 (void) fprintf(stderr, gettext("missing value in " 2376 "property=value argument\n")); 2377 usage(B_FALSE); 2378 } 2379 2380 *cb.cb_value = '\0'; 2381 cb.cb_value++; 2382 2383 if (*cb.cb_propname == '\0') { 2384 (void) fprintf(stderr, 2385 gettext("missing property in property=value argument\n")); 2386 usage(B_FALSE); 2387 } 2388 2389 ret = zfs_for_each(argc - 2, argv + 2, NULL, 2390 ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, &cb); 2391 2392 return (ret); 2393} 2394 2395/* 2396 * zfs snapshot [-r] [-o prop=value] ... <fs@snap> 2397 * 2398 * Creates a snapshot with the given name. While functionally equivalent to 2399 * 'zfs create', it is a separate command to differentiate intent. 2400 */ 2401static int 2402zfs_do_snapshot(int argc, char **argv) 2403{ 2404 boolean_t recursive = B_FALSE; 2405 int ret; 2406 char c; 2407 nvlist_t *props; 2408 2409 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 2410 (void) fprintf(stderr, gettext("internal error: " 2411 "out of memory\n")); 2412 return (1); 2413 } 2414 2415 /* check options */ 2416 while ((c = getopt(argc, argv, "ro:")) != -1) { 2417 switch (c) { 2418 case 'o': 2419 if (parseprop(props)) 2420 return (1); 2421 break; 2422 case 'r': 2423 recursive = B_TRUE; 2424 break; 2425 case '?': 2426 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2427 optopt); 2428 goto usage; 2429 } 2430 } 2431 2432 argc -= optind; 2433 argv += optind; 2434 2435 /* check number of arguments */ 2436 if (argc < 1) { 2437 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2438 goto usage; 2439 } 2440 if (argc > 1) { 2441 (void) fprintf(stderr, gettext("too many arguments\n")); 2442 goto usage; 2443 } 2444 2445 ret = zfs_snapshot(g_zfs, argv[0], recursive, props); 2446 nvlist_free(props); 2447 if (ret && recursive) 2448 (void) fprintf(stderr, gettext("no snapshots were created\n")); 2449 return (ret != 0); 2450 2451usage: 2452 nvlist_free(props); 2453 usage(B_FALSE); 2454 return (-1); 2455} 2456 2457/* 2458 * zfs send [-v] -R [-i|-I <@snap>] <fs@snap> 2459 * zfs send [-v] [-i|-I <@snap>] <fs@snap> 2460 * 2461 * Send a backup stream to stdout. 2462 */ 2463static int 2464zfs_do_send(int argc, char **argv) 2465{ 2466 char *fromname = NULL; 2467 char *toname = NULL; 2468 char *cp; 2469 zfs_handle_t *zhp; 2470 boolean_t doall = B_FALSE; 2471 boolean_t replicate = B_FALSE; 2472 boolean_t fromorigin = B_FALSE; 2473 boolean_t verbose = B_FALSE; 2474 int c, err; 2475 2476 /* check options */ 2477 while ((c = getopt(argc, argv, ":i:I:Rv")) != -1) { 2478 switch (c) { 2479 case 'i': 2480 if (fromname) 2481 usage(B_FALSE); 2482 fromname = optarg; 2483 break; 2484 case 'I': 2485 if (fromname) 2486 usage(B_FALSE); 2487 fromname = optarg; 2488 doall = B_TRUE; 2489 break; 2490 case 'R': 2491 replicate = B_TRUE; 2492 break; 2493 case 'v': 2494 verbose = B_TRUE; 2495 break; 2496 case ':': 2497 (void) fprintf(stderr, gettext("missing argument for " 2498 "'%c' option\n"), optopt); 2499 usage(B_FALSE); 2500 break; 2501 case '?': 2502 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2503 optopt); 2504 usage(B_FALSE); 2505 } 2506 } 2507 2508 argc -= optind; 2509 argv += optind; 2510 2511 /* check number of arguments */ 2512 if (argc < 1) { 2513 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2514 usage(B_FALSE); 2515 } 2516 if (argc > 1) { 2517 (void) fprintf(stderr, gettext("too many arguments\n")); 2518 usage(B_FALSE); 2519 } 2520 2521 if (isatty(STDOUT_FILENO)) { 2522 (void) fprintf(stderr, 2523 gettext("Error: Stream can not be written to a terminal.\n" 2524 "You must redirect standard output.\n")); 2525 return (1); 2526 } 2527 2528 cp = strchr(argv[0], '@'); 2529 if (cp == NULL) { 2530 (void) fprintf(stderr, 2531 gettext("argument must be a snapshot\n")); 2532 usage(B_FALSE); 2533 } 2534 *cp = '\0'; 2535 toname = cp + 1; 2536 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME); 2537 if (zhp == NULL) 2538 return (1); 2539 2540 /* 2541 * If they specified the full path to the snapshot, chop off 2542 * everything except the short name of the snapshot, but special 2543 * case if they specify the origin. 2544 */ 2545 if (fromname && (cp = strchr(fromname, '@')) != NULL) { 2546 char origin[ZFS_MAXNAMELEN]; 2547 zprop_source_t src; 2548 2549 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN, 2550 origin, sizeof (origin), &src, NULL, 0, B_FALSE); 2551 2552 if (strcmp(origin, fromname) == 0) { 2553 fromname = NULL; 2554 fromorigin = B_TRUE; 2555 } else { 2556 *cp = '\0'; 2557 if (cp != fromname && strcmp(argv[0], fromname)) { 2558 (void) fprintf(stderr, 2559 gettext("incremental source must be " 2560 "in same filesystem\n")); 2561 usage(B_FALSE); 2562 } 2563 fromname = cp + 1; 2564 if (strchr(fromname, '@') || strchr(fromname, '/')) { 2565 (void) fprintf(stderr, 2566 gettext("invalid incremental source\n")); 2567 usage(B_FALSE); 2568 } 2569 } 2570 } 2571 2572 if (replicate && fromname == NULL) 2573 doall = B_TRUE; 2574 2575 err = zfs_send(zhp, fromname, toname, replicate, doall, fromorigin, 2576 verbose, STDOUT_FILENO); 2577 zfs_close(zhp); 2578 2579 return (err != 0); 2580} 2581 2582/* 2583 * zfs receive [-dnvF] <fs@snap> 2584 * 2585 * Restore a backup stream from stdin. 2586 */ 2587static int 2588zfs_do_receive(int argc, char **argv) 2589{ 2590 int c, err; 2591 recvflags_t flags; 2592 2593 bzero(&flags, sizeof (recvflags_t)); 2594 /* check options */ 2595 while ((c = getopt(argc, argv, ":dnuvF")) != -1) { 2596 switch (c) { 2597 case 'd': 2598 flags.isprefix = B_TRUE; 2599 break; 2600 case 'n': 2601 flags.dryrun = B_TRUE; 2602 break; 2603 case 'u': 2604 flags.nomount = B_TRUE; 2605 break; 2606 case 'v': 2607 flags.verbose = B_TRUE; 2608 break; 2609 case 'F': 2610 flags.force = B_TRUE; 2611 break; 2612 case ':': 2613 (void) fprintf(stderr, gettext("missing argument for " 2614 "'%c' option\n"), optopt); 2615 usage(B_FALSE); 2616 break; 2617 case '?': 2618 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 2619 optopt); 2620 usage(B_FALSE); 2621 } 2622 } 2623 2624 argc -= optind; 2625 argv += optind; 2626 2627 /* check number of arguments */ 2628 if (argc < 1) { 2629 (void) fprintf(stderr, gettext("missing snapshot argument\n")); 2630 usage(B_FALSE); 2631 } 2632 if (argc > 1) { 2633 (void) fprintf(stderr, gettext("too many arguments\n")); 2634 usage(B_FALSE); 2635 } 2636 2637 if (isatty(STDIN_FILENO)) { 2638 (void) fprintf(stderr, 2639 gettext("Error: Backup stream can not be read " 2640 "from a terminal.\n" 2641 "You must redirect standard input.\n")); 2642 return (1); 2643 } 2644 2645 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL); 2646 2647 return (err != 0); 2648} 2649 2650typedef struct get_all_cbdata { 2651 zfs_handle_t **cb_handles; 2652 size_t cb_alloc; 2653 size_t cb_used; 2654 uint_t cb_types; 2655 boolean_t cb_verbose; 2656} get_all_cbdata_t; 2657 2658#define CHECK_SPINNER 30 2659#define SPINNER_TIME 3 /* seconds */ 2660#define MOUNT_TIME 5 /* seconds */ 2661 2662static int 2663get_one_dataset(zfs_handle_t *zhp, void *data) 2664{ 2665 static char spin[] = { '-', '\\', '|', '/' }; 2666 static int spinval = 0; 2667 static int spincheck = 0; 2668 static time_t last_spin_time = (time_t)0; 2669 get_all_cbdata_t *cbp = data; 2670 zfs_type_t type = zfs_get_type(zhp); 2671 2672 if (cbp->cb_verbose) { 2673 if (--spincheck < 0) { 2674 time_t now = time(NULL); 2675 if (last_spin_time + SPINNER_TIME < now) { 2676 (void) printf("\b%c", spin[spinval++ % 4]); 2677 (void) fflush(stdout); 2678 last_spin_time = now; 2679 } 2680 spincheck = CHECK_SPINNER; 2681 } 2682 } 2683 2684 /* 2685 * Interate over any nested datasets. 2686 */ 2687 if (type == ZFS_TYPE_FILESYSTEM && 2688 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) { 2689 zfs_close(zhp); 2690 return (1); 2691 } 2692 2693 /* 2694 * Skip any datasets whose type does not match. 2695 */ 2696 if ((type & cbp->cb_types) == 0) { 2697 zfs_close(zhp); 2698 return (0); 2699 } 2700 2701 if (cbp->cb_alloc == cbp->cb_used) { 2702 zfs_handle_t **handles; 2703 2704 if (cbp->cb_alloc == 0) 2705 cbp->cb_alloc = 64; 2706 else 2707 cbp->cb_alloc *= 2; 2708 2709 handles = safe_malloc(cbp->cb_alloc * sizeof (void *)); 2710 2711 if (cbp->cb_handles) { 2712 bcopy(cbp->cb_handles, handles, 2713 cbp->cb_used * sizeof (void *)); 2714 free(cbp->cb_handles); 2715 } 2716 2717 cbp->cb_handles = handles; 2718 } 2719 2720 cbp->cb_handles[cbp->cb_used++] = zhp; 2721 2722 return (0); 2723} 2724 2725static void 2726get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count, 2727 boolean_t verbose) 2728{ 2729 get_all_cbdata_t cb = { 0 }; 2730 cb.cb_types = types; 2731 cb.cb_verbose = verbose; 2732 2733 if (verbose) { 2734 (void) printf("%s: *", gettext("Reading ZFS config")); 2735 (void) fflush(stdout); 2736 } 2737 2738 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb); 2739 2740 *dslist = cb.cb_handles; 2741 *count = cb.cb_used; 2742 2743 if (verbose) { 2744 (void) printf("\b%s\n", gettext("done.")); 2745 } 2746} 2747 2748static int 2749dataset_cmp(const void *a, const void *b) 2750{ 2751 zfs_handle_t **za = (zfs_handle_t **)a; 2752 zfs_handle_t **zb = (zfs_handle_t **)b; 2753 char mounta[MAXPATHLEN]; 2754 char mountb[MAXPATHLEN]; 2755 boolean_t gota, gotb; 2756 2757 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0) 2758 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta, 2759 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0); 2760 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0) 2761 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb, 2762 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0); 2763 2764 if (gota && gotb) 2765 return (strcmp(mounta, mountb)); 2766 2767 if (gota) 2768 return (-1); 2769 if (gotb) 2770 return (1); 2771 2772 return (strcmp(zfs_get_name(a), zfs_get_name(b))); 2773} 2774 2775/* 2776 * Generic callback for sharing or mounting filesystems. Because the code is so 2777 * similar, we have a common function with an extra parameter to determine which 2778 * mode we are using. 2779 */ 2780#define OP_SHARE 0x1 2781#define OP_MOUNT 0x2 2782 2783/* 2784 * Share or mount a dataset. 2785 */ 2786static int 2787share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol, 2788 boolean_t explicit, const char *options) 2789{ 2790 char mountpoint[ZFS_MAXPROPLEN]; 2791 char shareopts[ZFS_MAXPROPLEN]; 2792 char smbshareopts[ZFS_MAXPROPLEN]; 2793 const char *cmdname = op == OP_SHARE ? "share" : "mount"; 2794 struct mnttab mnt; 2795 uint64_t zoned, canmount; 2796 zfs_type_t type = zfs_get_type(zhp); 2797 boolean_t shared_nfs, shared_smb; 2798 2799 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)); 2800 2801 if (type == ZFS_TYPE_FILESYSTEM) { 2802 /* 2803 * Check to make sure we can mount/share this dataset. If we 2804 * are in the global zone and the filesystem is exported to a 2805 * local zone, or if we are in a local zone and the 2806 * filesystem is not exported, then it is an error. 2807 */ 2808 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); 2809 2810 if (zoned && getzoneid() == GLOBAL_ZONEID) { 2811 if (!explicit) 2812 return (0); 2813 2814 (void) fprintf(stderr, gettext("cannot %s '%s': " 2815 "dataset is exported to a local zone\n"), cmdname, 2816 zfs_get_name(zhp)); 2817 return (1); 2818 2819 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) { 2820 if (!explicit) 2821 return (0); 2822 2823 (void) fprintf(stderr, gettext("cannot %s '%s': " 2824 "permission denied\n"), cmdname, 2825 zfs_get_name(zhp)); 2826 return (1); 2827 } 2828 2829 /* 2830 * Ignore any filesystems which don't apply to us. This 2831 * includes those with a legacy mountpoint, or those with 2832 * legacy share options. 2833 */ 2834 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 2835 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0); 2836 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts, 2837 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 2838 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts, 2839 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0); 2840 2841 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 && 2842 strcmp(smbshareopts, "off") == 0) { 2843 if (!explicit) 2844 return (0); 2845 2846 (void) fprintf(stderr, gettext("cannot share '%s': " 2847 "legacy share\n"), zfs_get_name(zhp)); 2848 (void) fprintf(stderr, gettext("use share(1M) to " 2849 "share this filesystem, or set " 2850 "sharenfs property on\n")); 2851 return (1); 2852 } 2853 2854 /* 2855 * We cannot share or mount legacy filesystems. If the 2856 * shareopts is non-legacy but the mountpoint is legacy, we 2857 * treat it as a legacy share. 2858 */ 2859 if (strcmp(mountpoint, "legacy") == 0) { 2860 if (!explicit) 2861 return (0); 2862 2863 (void) fprintf(stderr, gettext("cannot %s '%s': " 2864 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp)); 2865 (void) fprintf(stderr, gettext("use %s(1M) to " 2866 "%s this filesystem\n"), cmdname, cmdname); 2867 return (1); 2868 } 2869 2870 if (strcmp(mountpoint, "none") == 0) { 2871 if (!explicit) 2872 return (0); 2873 2874 (void) fprintf(stderr, gettext("cannot %s '%s': no " 2875 "mountpoint set\n"), cmdname, zfs_get_name(zhp)); 2876 return (1); 2877 } 2878 2879 /* 2880 * canmount explicit outcome 2881 * on no pass through 2882 * on yes pass through 2883 * off no return 0 2884 * off yes display error, return 1 2885 * noauto no return 0 2886 * noauto yes pass through 2887 */ 2888 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT); 2889 if (canmount == ZFS_CANMOUNT_OFF) { 2890 if (!explicit) 2891 return (0); 2892 2893 (void) fprintf(stderr, gettext("cannot %s '%s': " 2894 "'canmount' property is set to 'off'\n"), cmdname, 2895 zfs_get_name(zhp)); 2896 return (1); 2897 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) { 2898 return (0); 2899 } 2900 2901 /* 2902 * At this point, we have verified that the mountpoint and/or 2903 * shareopts are appropriate for auto management. If the 2904 * filesystem is already mounted or shared, return (failing 2905 * for explicit requests); otherwise mount or share the 2906 * filesystem. 2907 */ 2908 switch (op) { 2909 case OP_SHARE: 2910 2911 shared_nfs = zfs_is_shared_nfs(zhp, NULL); 2912 shared_smb = zfs_is_shared_smb(zhp, NULL); 2913 2914 if (shared_nfs && shared_smb || 2915 (shared_nfs && strcmp(shareopts, "on") == 0 && 2916 strcmp(smbshareopts, "off") == 0) || 2917 (shared_smb && strcmp(smbshareopts, "on") == 0 && 2918 strcmp(shareopts, "off") == 0)) { 2919 if (!explicit) 2920 return (0); 2921 2922 (void) fprintf(stderr, gettext("cannot share " 2923 "'%s': filesystem already shared\n"), 2924 zfs_get_name(zhp)); 2925 return (1); 2926 } 2927 2928 if (!zfs_is_mounted(zhp, NULL) && 2929 zfs_mount(zhp, NULL, 0) != 0) 2930 return (1); 2931 2932 if (protocol == NULL) { 2933 if (zfs_shareall(zhp) != 0) 2934 return (1); 2935 } else if (strcmp(protocol, "nfs") == 0) { 2936 if (zfs_share_nfs(zhp)) 2937 return (1); 2938 } else if (strcmp(protocol, "smb") == 0) { 2939 if (zfs_share_smb(zhp)) 2940 return (1); 2941 } else { 2942 (void) fprintf(stderr, gettext("cannot share " 2943 "'%s': invalid share type '%s' " 2944 "specified\n"), 2945 zfs_get_name(zhp), protocol); 2946 return (1); 2947 } 2948 2949 break; 2950 2951 case OP_MOUNT: 2952 if (options == NULL) 2953 mnt.mnt_mntopts = ""; 2954 else 2955 mnt.mnt_mntopts = (char *)options; 2956 2957 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) && 2958 zfs_is_mounted(zhp, NULL)) { 2959 if (!explicit) 2960 return (0); 2961 2962 (void) fprintf(stderr, gettext("cannot mount " 2963 "'%s': filesystem already mounted\n"), 2964 zfs_get_name(zhp)); 2965 return (1); 2966 } 2967 2968 if (zfs_mount(zhp, options, flags) != 0) 2969 return (1); 2970 break; 2971 } 2972 } else { 2973 assert(op == OP_SHARE); 2974 2975 /* 2976 * Ignore any volumes that aren't shared. 2977 */ 2978 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts, 2979 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0); 2980 2981 if (strcmp(shareopts, "off") == 0) { 2982 if (!explicit) 2983 return (0); 2984 2985 (void) fprintf(stderr, gettext("cannot share '%s': " 2986 "'shareiscsi' property not set\n"), 2987 zfs_get_name(zhp)); 2988 (void) fprintf(stderr, gettext("set 'shareiscsi' " 2989 "property or use iscsitadm(1M) to share this " 2990 "volume\n")); 2991 return (1); 2992 } 2993 2994 if (zfs_is_shared_iscsi(zhp)) { 2995 if (!explicit) 2996 return (0); 2997 2998 (void) fprintf(stderr, gettext("cannot share " 2999 "'%s': volume already shared\n"), 3000 zfs_get_name(zhp)); 3001 return (1); 3002 } 3003 3004 if (zfs_share_iscsi(zhp) != 0) 3005 return (1); 3006 } 3007 3008 return (0); 3009} 3010 3011/* 3012 * Reports progress in the form "(current/total)". Not thread-safe. 3013 */ 3014static void 3015report_mount_progress(int current, int total) 3016{ 3017 static int len; 3018 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b" 3019 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"; 3020 static time_t last_progress_time; 3021 time_t now = time(NULL); 3022 3023 /* report 1..n instead of 0..n-1 */ 3024 ++current; 3025 3026 /* display header if we're here for the first time */ 3027 if (current == 1) { 3028 (void) printf(gettext("Mounting ZFS filesystems: ")); 3029 len = 0; 3030 } else if (current != total && last_progress_time + MOUNT_TIME >= now) { 3031 /* too soon to report again */ 3032 return; 3033 } 3034 3035 last_progress_time = now; 3036 3037 /* back up to prepare for overwriting */ 3038 if (len) 3039 (void) printf("%*.*s", len, len, reverse); 3040 3041 /* We put a newline at the end if this is the last one. */ 3042 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : ""); 3043 (void) fflush(stdout); 3044} 3045 3046static void 3047append_options(char *mntopts, char *newopts) 3048{ 3049 int len = strlen(mntopts); 3050 3051 /* original length plus new string to append plus 1 for the comma */ 3052 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) { 3053 (void) fprintf(stderr, gettext("the opts argument for " 3054 "'%c' option is too long (more than %d chars)\n"), 3055 "-o", MNT_LINE_MAX); 3056 usage(B_FALSE); 3057 } 3058 3059 if (*mntopts) 3060 mntopts[len++] = ','; 3061 3062 (void) strcpy(&mntopts[len], newopts); 3063} 3064 3065static int 3066share_mount(int op, int argc, char **argv) 3067{ 3068 int do_all = 0; 3069 boolean_t verbose = B_FALSE; 3070 int c, ret = 0; 3071 char *options = NULL; 3072 int types, flags = 0; 3073 3074 /* check options */ 3075 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a")) 3076 != -1) { 3077 switch (c) { 3078 case 'a': 3079 do_all = 1; 3080 break; 3081 case 'v': 3082 verbose = B_TRUE; 3083 break; 3084 case 'o': 3085 if (*optarg == '\0') { 3086 (void) fprintf(stderr, gettext("empty mount " 3087 "options (-o) specified\n")); 3088 usage(B_FALSE); 3089 } 3090 3091 if (options == NULL) 3092 options = safe_malloc(MNT_LINE_MAX + 1); 3093 3094 /* option validation is done later */ 3095 append_options(options, optarg); 3096 break; 3097 3098 case 'O': 3099 flags |= MS_OVERLAY; 3100 break; 3101 case ':': 3102 (void) fprintf(stderr, gettext("missing argument for " 3103 "'%c' option\n"), optopt); 3104 usage(B_FALSE); 3105 break; 3106 case '?': 3107 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3108 optopt); 3109 usage(B_FALSE); 3110 } 3111 } 3112 3113 argc -= optind; 3114 argv += optind; 3115 3116 /* check number of arguments */ 3117 if (do_all) { 3118 zfs_handle_t **dslist = NULL; 3119 size_t i, count = 0; 3120 char *protocol = NULL; 3121 3122 if (op == OP_MOUNT) { 3123 types = ZFS_TYPE_FILESYSTEM; 3124 } else if (argc > 0) { 3125 if (strcmp(argv[0], "nfs") == 0 || 3126 strcmp(argv[0], "smb") == 0) { 3127 types = ZFS_TYPE_FILESYSTEM; 3128 } else if (strcmp(argv[0], "iscsi") == 0) { 3129 types = ZFS_TYPE_VOLUME; 3130 } else { 3131 (void) fprintf(stderr, gettext("share type " 3132 "must be 'nfs', 'smb' or 'iscsi'\n")); 3133 usage(B_FALSE); 3134 } 3135 protocol = argv[0]; 3136 argc--; 3137 argv++; 3138 } else { 3139 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME; 3140 } 3141 3142 if (argc != 0) { 3143 (void) fprintf(stderr, gettext("too many arguments\n")); 3144 usage(B_FALSE); 3145 } 3146 3147 get_all_datasets(types, &dslist, &count, verbose); 3148 3149 if (count == 0) 3150 return (0); 3151 3152 qsort(dslist, count, sizeof (void *), dataset_cmp); 3153 3154 for (i = 0; i < count; i++) { 3155 if (verbose) 3156 report_mount_progress(i, count); 3157 3158 if (share_mount_one(dslist[i], op, flags, protocol, 3159 B_FALSE, options) != 0) 3160 ret = 1; 3161 zfs_close(dslist[i]); 3162 } 3163 3164 free(dslist); 3165 } else if (argc == 0) { 3166 struct mnttab entry; 3167 3168 if ((op == OP_SHARE) || (options != NULL)) { 3169 (void) fprintf(stderr, gettext("missing filesystem " 3170 "argument (specify -a for all)\n")); 3171 usage(B_FALSE); 3172 } 3173 3174 /* 3175 * When mount is given no arguments, go through /etc/mnttab and 3176 * display any active ZFS mounts. We hide any snapshots, since 3177 * they are controlled automatically. 3178 */ 3179 rewind(mnttab_file); 3180 while (getmntent(mnttab_file, &entry) == 0) { 3181 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 || 3182 strchr(entry.mnt_special, '@') != NULL) 3183 continue; 3184 3185 (void) printf("%-30s %s\n", entry.mnt_special, 3186 entry.mnt_mountp); 3187 } 3188 3189 } else { 3190 zfs_handle_t *zhp; 3191 3192 types = ZFS_TYPE_FILESYSTEM; 3193 if (op == OP_SHARE) 3194 types |= ZFS_TYPE_VOLUME; 3195 3196 if (argc > 1) { 3197 (void) fprintf(stderr, 3198 gettext("too many arguments\n")); 3199 usage(B_FALSE); 3200 } 3201 3202 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) { 3203 ret = 1; 3204 } else { 3205 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE, 3206 options); 3207 zfs_close(zhp); 3208 } 3209 } 3210 3211 return (ret); 3212} 3213 3214/* 3215 * zfs mount -a [nfs | iscsi] 3216 * zfs mount filesystem 3217 * 3218 * Mount all filesystems, or mount the given filesystem. 3219 */ 3220static int 3221zfs_do_mount(int argc, char **argv) 3222{ 3223 return (share_mount(OP_MOUNT, argc, argv)); 3224} 3225 3226/* 3227 * zfs share -a [nfs | iscsi | smb] 3228 * zfs share filesystem 3229 * 3230 * Share all filesystems, or share the given filesystem. 3231 */ 3232static int 3233zfs_do_share(int argc, char **argv) 3234{ 3235 return (share_mount(OP_SHARE, argc, argv)); 3236} 3237 3238typedef struct unshare_unmount_node { 3239 zfs_handle_t *un_zhp; 3240 char *un_mountp; 3241 uu_avl_node_t un_avlnode; 3242} unshare_unmount_node_t; 3243 3244/* ARGSUSED */ 3245static int 3246unshare_unmount_compare(const void *larg, const void *rarg, void *unused) 3247{ 3248 const unshare_unmount_node_t *l = larg; 3249 const unshare_unmount_node_t *r = rarg; 3250 3251 return (strcmp(l->un_mountp, r->un_mountp)); 3252} 3253 3254/* 3255 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an 3256 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem, 3257 * and unmount it appropriately. 3258 */ 3259static int 3260unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual) 3261{ 3262 zfs_handle_t *zhp; 3263 int ret; 3264 struct stat64 statbuf; 3265 struct extmnttab entry; 3266 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount"; 3267 ino_t path_inode; 3268 3269 /* 3270 * Search for the path in /etc/mnttab. Rather than looking for the 3271 * specific path, which can be fooled by non-standard paths (i.e. ".." 3272 * or "//"), we stat() the path and search for the corresponding 3273 * (major,minor) device pair. 3274 */ 3275 if (stat64(path, &statbuf) != 0) { 3276 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3277 cmdname, path, strerror(errno)); 3278 return (1); 3279 } 3280 path_inode = statbuf.st_ino; 3281 3282 /* 3283 * Search for the given (major,minor) pair in the mount table. 3284 */ 3285 rewind(mnttab_file); 3286 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) { 3287 if (entry.mnt_major == major(statbuf.st_dev) && 3288 entry.mnt_minor == minor(statbuf.st_dev)) 3289 break; 3290 } 3291 if (ret != 0) { 3292 if (op == OP_SHARE) { 3293 (void) fprintf(stderr, gettext("cannot %s '%s': not " 3294 "currently mounted\n"), cmdname, path); 3295 return (1); 3296 } 3297 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"), 3298 path); 3299 if ((ret = umount2(path, flags)) != 0) 3300 (void) fprintf(stderr, gettext("%s: %s\n"), path, 3301 strerror(errno)); 3302 return (ret != 0); 3303 } 3304 3305 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) { 3306 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS " 3307 "filesystem\n"), cmdname, path); 3308 return (1); 3309 } 3310 3311 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3312 ZFS_TYPE_FILESYSTEM)) == NULL) 3313 return (1); 3314 3315 ret = 1; 3316 if (stat64(entry.mnt_mountp, &statbuf) != 0) { 3317 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"), 3318 cmdname, path, strerror(errno)); 3319 goto out; 3320 } else if (statbuf.st_ino != path_inode) { 3321 (void) fprintf(stderr, gettext("cannot " 3322 "%s '%s': not a mountpoint\n"), cmdname, path); 3323 goto out; 3324 } 3325 3326 if (op == OP_SHARE) { 3327 char nfs_mnt_prop[ZFS_MAXPROPLEN]; 3328 char smbshare_prop[ZFS_MAXPROPLEN]; 3329 3330 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop, 3331 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0); 3332 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop, 3333 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0); 3334 3335 if (strcmp(nfs_mnt_prop, "off") == 0 && 3336 strcmp(smbshare_prop, "off") == 0) { 3337 (void) fprintf(stderr, gettext("cannot unshare " 3338 "'%s': legacy share\n"), path); 3339 (void) fprintf(stderr, gettext("use " 3340 "unshare(1M) to unshare this filesystem\n")); 3341 } else if (!zfs_is_shared(zhp)) { 3342 (void) fprintf(stderr, gettext("cannot unshare '%s': " 3343 "not currently shared\n"), path); 3344 } else { 3345 ret = zfs_unshareall_bypath(zhp, path); 3346 } 3347 } else { 3348 char mtpt_prop[ZFS_MAXPROPLEN]; 3349 3350 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop, 3351 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0); 3352 3353 if (is_manual) { 3354 ret = zfs_unmount(zhp, NULL, flags); 3355 } else if (strcmp(mtpt_prop, "legacy") == 0) { 3356 (void) fprintf(stderr, gettext("cannot unmount " 3357 "'%s': legacy mountpoint\n"), 3358 zfs_get_name(zhp)); 3359 (void) fprintf(stderr, gettext("use umount(1M) " 3360 "to unmount this filesystem\n")); 3361 } else { 3362 ret = zfs_unmountall(zhp, flags); 3363 } 3364 } 3365 3366out: 3367 zfs_close(zhp); 3368 3369 return (ret != 0); 3370} 3371 3372/* 3373 * Generic callback for unsharing or unmounting a filesystem. 3374 */ 3375static int 3376unshare_unmount(int op, int argc, char **argv) 3377{ 3378 int do_all = 0; 3379 int flags = 0; 3380 int ret = 0; 3381 int types, c; 3382 zfs_handle_t *zhp; 3383 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN]; 3384 char sharesmb[ZFS_MAXPROPLEN]; 3385 3386 /* check options */ 3387 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) { 3388 switch (c) { 3389 case 'a': 3390 do_all = 1; 3391 break; 3392 case 'f': 3393 flags = MS_FORCE; 3394 break; 3395 case '?': 3396 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3397 optopt); 3398 usage(B_FALSE); 3399 } 3400 } 3401 3402 argc -= optind; 3403 argv += optind; 3404 3405 if (do_all) { 3406 /* 3407 * We could make use of zfs_for_each() to walk all datasets in 3408 * the system, but this would be very inefficient, especially 3409 * since we would have to linearly search /etc/mnttab for each 3410 * one. Instead, do one pass through /etc/mnttab looking for 3411 * zfs entries and call zfs_unmount() for each one. 3412 * 3413 * Things get a little tricky if the administrator has created 3414 * mountpoints beneath other ZFS filesystems. In this case, we 3415 * have to unmount the deepest filesystems first. To accomplish 3416 * this, we place all the mountpoints in an AVL tree sorted by 3417 * the special type (dataset name), and walk the result in 3418 * reverse to make sure to get any snapshots first. 3419 */ 3420 struct mnttab entry; 3421 uu_avl_pool_t *pool; 3422 uu_avl_t *tree; 3423 unshare_unmount_node_t *node; 3424 uu_avl_index_t idx; 3425 uu_avl_walk_t *walk; 3426 3427 if (argc != 0) { 3428 (void) fprintf(stderr, gettext("too many arguments\n")); 3429 usage(B_FALSE); 3430 } 3431 3432 if ((pool = uu_avl_pool_create("unmount_pool", 3433 sizeof (unshare_unmount_node_t), 3434 offsetof(unshare_unmount_node_t, un_avlnode), 3435 unshare_unmount_compare, 3436 UU_DEFAULT)) == NULL) { 3437 (void) fprintf(stderr, gettext("internal error: " 3438 "out of memory\n")); 3439 exit(1); 3440 } 3441 3442 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) { 3443 (void) fprintf(stderr, gettext("internal error: " 3444 "out of memory\n")); 3445 exit(1); 3446 } 3447 3448 rewind(mnttab_file); 3449 while (getmntent(mnttab_file, &entry) == 0) { 3450 3451 /* ignore non-ZFS entries */ 3452 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) 3453 continue; 3454 3455 /* ignore snapshots */ 3456 if (strchr(entry.mnt_special, '@') != NULL) 3457 continue; 3458 3459 if ((zhp = zfs_open(g_zfs, entry.mnt_special, 3460 ZFS_TYPE_FILESYSTEM)) == NULL) { 3461 ret = 1; 3462 continue; 3463 } 3464 3465 switch (op) { 3466 case OP_SHARE: 3467 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3468 nfsiscsi_mnt_prop, 3469 sizeof (nfsiscsi_mnt_prop), 3470 NULL, NULL, 0, B_FALSE) == 0); 3471 if (strcmp(nfsiscsi_mnt_prop, "off") != 0) 3472 break; 3473 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3474 nfsiscsi_mnt_prop, 3475 sizeof (nfsiscsi_mnt_prop), 3476 NULL, NULL, 0, B_FALSE) == 0); 3477 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) 3478 continue; 3479 break; 3480 case OP_MOUNT: 3481 /* Ignore legacy mounts */ 3482 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, 3483 nfsiscsi_mnt_prop, 3484 sizeof (nfsiscsi_mnt_prop), 3485 NULL, NULL, 0, B_FALSE) == 0); 3486 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) 3487 continue; 3488 /* Ignore canmount=noauto mounts */ 3489 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == 3490 ZFS_CANMOUNT_NOAUTO) 3491 continue; 3492 default: 3493 break; 3494 } 3495 3496 node = safe_malloc(sizeof (unshare_unmount_node_t)); 3497 node->un_zhp = zhp; 3498 3499 if ((node->un_mountp = strdup(entry.mnt_mountp)) == 3500 NULL) { 3501 (void) fprintf(stderr, gettext("internal error:" 3502 " out of memory\n")); 3503 exit(1); 3504 } 3505 3506 uu_avl_node_init(node, &node->un_avlnode, pool); 3507 3508 if (uu_avl_find(tree, node, NULL, &idx) == NULL) { 3509 uu_avl_insert(tree, node, idx); 3510 } else { 3511 zfs_close(node->un_zhp); 3512 free(node->un_mountp); 3513 free(node); 3514 } 3515 } 3516 3517 /* 3518 * Walk the AVL tree in reverse, unmounting each filesystem and 3519 * removing it from the AVL tree in the process. 3520 */ 3521 if ((walk = uu_avl_walk_start(tree, 3522 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) { 3523 (void) fprintf(stderr, 3524 gettext("internal error: out of memory")); 3525 exit(1); 3526 } 3527 3528 while ((node = uu_avl_walk_next(walk)) != NULL) { 3529 uu_avl_remove(tree, node); 3530 3531 switch (op) { 3532 case OP_SHARE: 3533 if (zfs_unshareall_bypath(node->un_zhp, 3534 node->un_mountp) != 0) 3535 ret = 1; 3536 break; 3537 3538 case OP_MOUNT: 3539 if (zfs_unmount(node->un_zhp, 3540 node->un_mountp, flags) != 0) 3541 ret = 1; 3542 break; 3543 } 3544 3545 zfs_close(node->un_zhp); 3546 free(node->un_mountp); 3547 free(node); 3548 } 3549 3550 uu_avl_walk_end(walk); 3551 uu_avl_destroy(tree); 3552 uu_avl_pool_destroy(pool); 3553 3554 if (op == OP_SHARE) { 3555 /* 3556 * Finally, unshare any volumes shared via iSCSI. 3557 */ 3558 zfs_handle_t **dslist = NULL; 3559 size_t i, count = 0; 3560 3561 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count, 3562 B_FALSE); 3563 3564 if (count != 0) { 3565 qsort(dslist, count, sizeof (void *), 3566 dataset_cmp); 3567 3568 for (i = 0; i < count; i++) { 3569 if (zfs_unshare_iscsi(dslist[i]) != 0) 3570 ret = 1; 3571 zfs_close(dslist[i]); 3572 } 3573 3574 free(dslist); 3575 } 3576 } 3577 } else { 3578 if (argc != 1) { 3579 if (argc == 0) 3580 (void) fprintf(stderr, 3581 gettext("missing filesystem argument\n")); 3582 else 3583 (void) fprintf(stderr, 3584 gettext("too many arguments\n")); 3585 usage(B_FALSE); 3586 } 3587 3588 /* 3589 * We have an argument, but it may be a full path or a ZFS 3590 * filesystem. Pass full paths off to unmount_path() (shared by 3591 * manual_unmount), otherwise open the filesystem and pass to 3592 * zfs_unmount(). 3593 */ 3594 if (argv[0][0] == '/') 3595 return (unshare_unmount_path(op, argv[0], 3596 flags, B_FALSE)); 3597 3598 types = ZFS_TYPE_FILESYSTEM; 3599 if (op == OP_SHARE) 3600 types |= ZFS_TYPE_VOLUME; 3601 3602 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) 3603 return (1); 3604 3605 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) { 3606 verify(zfs_prop_get(zhp, op == OP_SHARE ? 3607 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, 3608 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL, 3609 NULL, 0, B_FALSE) == 0); 3610 3611 switch (op) { 3612 case OP_SHARE: 3613 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, 3614 nfsiscsi_mnt_prop, 3615 sizeof (nfsiscsi_mnt_prop), 3616 NULL, NULL, 0, B_FALSE) == 0); 3617 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, 3618 sharesmb, sizeof (sharesmb), NULL, NULL, 3619 0, B_FALSE) == 0); 3620 3621 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 && 3622 strcmp(sharesmb, "off") == 0) { 3623 (void) fprintf(stderr, gettext("cannot " 3624 "unshare '%s': legacy share\n"), 3625 zfs_get_name(zhp)); 3626 (void) fprintf(stderr, gettext("use " 3627 "unshare(1M) to unshare this " 3628 "filesystem\n")); 3629 ret = 1; 3630 } else if (!zfs_is_shared(zhp)) { 3631 (void) fprintf(stderr, gettext("cannot " 3632 "unshare '%s': not currently " 3633 "shared\n"), zfs_get_name(zhp)); 3634 ret = 1; 3635 } else if (zfs_unshareall(zhp) != 0) { 3636 ret = 1; 3637 } 3638 break; 3639 3640 case OP_MOUNT: 3641 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) { 3642 (void) fprintf(stderr, gettext("cannot " 3643 "unmount '%s': legacy " 3644 "mountpoint\n"), zfs_get_name(zhp)); 3645 (void) fprintf(stderr, gettext("use " 3646 "umount(1M) to unmount this " 3647 "filesystem\n")); 3648 ret = 1; 3649 } else if (!zfs_is_mounted(zhp, NULL)) { 3650 (void) fprintf(stderr, gettext("cannot " 3651 "unmount '%s': not currently " 3652 "mounted\n"), 3653 zfs_get_name(zhp)); 3654 ret = 1; 3655 } else if (zfs_unmountall(zhp, flags) != 0) { 3656 ret = 1; 3657 } 3658 break; 3659 } 3660 } else { 3661 assert(op == OP_SHARE); 3662 3663 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, 3664 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), 3665 NULL, NULL, 0, B_FALSE) == 0); 3666 3667 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) { 3668 (void) fprintf(stderr, gettext("cannot unshare " 3669 "'%s': 'shareiscsi' property not set\n"), 3670 zfs_get_name(zhp)); 3671 (void) fprintf(stderr, gettext("set " 3672 "'shareiscsi' property or use " 3673 "iscsitadm(1M) to share this volume\n")); 3674 ret = 1; 3675 } else if (!zfs_is_shared_iscsi(zhp)) { 3676 (void) fprintf(stderr, gettext("cannot " 3677 "unshare '%s': not currently shared\n"), 3678 zfs_get_name(zhp)); 3679 ret = 1; 3680 } else if (zfs_unshare_iscsi(zhp) != 0) { 3681 ret = 1; 3682 } 3683 } 3684 3685 zfs_close(zhp); 3686 } 3687 3688 return (ret); 3689} 3690 3691/* 3692 * zfs unmount -a 3693 * zfs unmount filesystem 3694 * 3695 * Unmount all filesystems, or a specific ZFS filesystem. 3696 */ 3697static int 3698zfs_do_unmount(int argc, char **argv) 3699{ 3700 return (unshare_unmount(OP_MOUNT, argc, argv)); 3701} 3702 3703/* 3704 * zfs unshare -a 3705 * zfs unshare filesystem 3706 * 3707 * Unshare all filesystems, or a specific ZFS filesystem. 3708 */ 3709static int 3710zfs_do_unshare(int argc, char **argv) 3711{ 3712 return (unshare_unmount(OP_SHARE, argc, argv)); 3713} 3714 3715/* ARGSUSED */ 3716static int 3717zfs_do_python(int argc, char **argv) 3718{ 3719 (void) execv(pypath, argv-1); 3720 (void) printf("internal error: %s not found\n", pypath); 3721 return (-1); 3722} 3723 3724/* 3725 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is 3726 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'. 3727 */ 3728static int 3729manual_mount(int argc, char **argv) 3730{ 3731 zfs_handle_t *zhp; 3732 char mountpoint[ZFS_MAXPROPLEN]; 3733 char mntopts[MNT_LINE_MAX] = { '\0' }; 3734 int ret; 3735 int c; 3736 int flags = 0; 3737 char *dataset, *path; 3738 3739 /* check options */ 3740 while ((c = getopt(argc, argv, ":mo:O")) != -1) { 3741 switch (c) { 3742 case 'o': 3743 (void) strlcpy(mntopts, optarg, sizeof (mntopts)); 3744 break; 3745 case 'O': 3746 flags |= MS_OVERLAY; 3747 break; 3748 case 'm': 3749 flags |= MS_NOMNTTAB; 3750 break; 3751 case ':': 3752 (void) fprintf(stderr, gettext("missing argument for " 3753 "'%c' option\n"), optopt); 3754 usage(B_FALSE); 3755 break; 3756 case '?': 3757 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3758 optopt); 3759 (void) fprintf(stderr, gettext("usage: mount [-o opts] " 3760 "<path>\n")); 3761 return (2); 3762 } 3763 } 3764 3765 argc -= optind; 3766 argv += optind; 3767 3768 /* check that we only have two arguments */ 3769 if (argc != 2) { 3770 if (argc == 0) 3771 (void) fprintf(stderr, gettext("missing dataset " 3772 "argument\n")); 3773 else if (argc == 1) 3774 (void) fprintf(stderr, 3775 gettext("missing mountpoint argument\n")); 3776 else 3777 (void) fprintf(stderr, gettext("too many arguments\n")); 3778 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n"); 3779 return (2); 3780 } 3781 3782 dataset = argv[0]; 3783 path = argv[1]; 3784 3785 /* try to open the dataset */ 3786 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL) 3787 return (1); 3788 3789 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, 3790 sizeof (mountpoint), NULL, NULL, 0, B_FALSE); 3791 3792 /* check for legacy mountpoint and complain appropriately */ 3793 ret = 0; 3794 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) { 3795 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS, 3796 NULL, 0, mntopts, sizeof (mntopts)) != 0) { 3797 (void) fprintf(stderr, gettext("mount failed: %s\n"), 3798 strerror(errno)); 3799 ret = 1; 3800 } 3801 } else { 3802 (void) fprintf(stderr, gettext("filesystem '%s' cannot be " 3803 "mounted using 'mount -F zfs'\n"), dataset); 3804 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' " 3805 "instead.\n"), path); 3806 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' " 3807 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n")); 3808 (void) fprintf(stderr, gettext("See zfs(1M) for more " 3809 "information.\n")); 3810 ret = 1; 3811 } 3812 3813 return (ret); 3814} 3815 3816/* 3817 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow 3818 * unmounts of non-legacy filesystems, as this is the dominant administrative 3819 * interface. 3820 */ 3821static int 3822manual_unmount(int argc, char **argv) 3823{ 3824 int flags = 0; 3825 int c; 3826 3827 /* check options */ 3828 while ((c = getopt(argc, argv, "f")) != -1) { 3829 switch (c) { 3830 case 'f': 3831 flags = MS_FORCE; 3832 break; 3833 case '?': 3834 (void) fprintf(stderr, gettext("invalid option '%c'\n"), 3835 optopt); 3836 (void) fprintf(stderr, gettext("usage: unmount [-f] " 3837 "<path>\n")); 3838 return (2); 3839 } 3840 } 3841 3842 argc -= optind; 3843 argv += optind; 3844 3845 /* check arguments */ 3846 if (argc != 1) { 3847 if (argc == 0) 3848 (void) fprintf(stderr, gettext("missing path " 3849 "argument\n")); 3850 else 3851 (void) fprintf(stderr, gettext("too many arguments\n")); 3852 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n")); 3853 return (2); 3854 } 3855 3856 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE)); 3857} 3858 3859static int 3860volcheck(zpool_handle_t *zhp, void *data) 3861{ 3862 boolean_t isinit = *((boolean_t *)data); 3863 3864 if (isinit) 3865 return (zpool_create_zvol_links(zhp)); 3866 else 3867 return (zpool_remove_zvol_links(zhp)); 3868} 3869 3870/* 3871 * Iterate over all pools in the system and either create or destroy /dev/zvol 3872 * links, depending on the value of 'isinit'. 3873 */ 3874static int 3875do_volcheck(boolean_t isinit) 3876{ 3877 return (zpool_iter(g_zfs, volcheck, &isinit) ? 1 : 0); 3878} 3879 3880static int 3881find_command_idx(char *command, int *idx) 3882{ 3883 int i; 3884 3885 for (i = 0; i < NCOMMAND; i++) { 3886 if (command_table[i].name == NULL) 3887 continue; 3888 3889 if (strcmp(command, command_table[i].name) == 0) { 3890 *idx = i; 3891 return (0); 3892 } 3893 } 3894 return (1); 3895} 3896 3897int 3898main(int argc, char **argv) 3899{ 3900 int ret; 3901 int i; 3902 char *progname; 3903 char *cmdname; 3904 3905 (void) setlocale(LC_ALL, ""); 3906 (void) textdomain(TEXT_DOMAIN); 3907 3908 opterr = 0; 3909 3910 if ((g_zfs = libzfs_init()) == NULL) { 3911 (void) fprintf(stderr, gettext("internal error: failed to " 3912 "initialize ZFS library\n")); 3913 return (1); 3914 } 3915 3916 zpool_set_history_str("zfs", argc, argv, history_str); 3917 verify(zpool_stage_history(g_zfs, history_str) == 0); 3918 3919 libzfs_print_on_error(g_zfs, B_TRUE); 3920 3921 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) { 3922 (void) fprintf(stderr, gettext("internal error: unable to " 3923 "open %s\n"), MNTTAB); 3924 return (1); 3925 } 3926 3927 /* 3928 * This command also doubles as the /etc/fs mount and unmount program. 3929 * Determine if we should take this behavior based on argv[0]. 3930 */ 3931 progname = basename(argv[0]); 3932 if (strcmp(progname, "mount") == 0) { 3933 ret = manual_mount(argc, argv); 3934 } else if (strcmp(progname, "umount") == 0) { 3935 ret = manual_unmount(argc, argv); 3936 } else { 3937 /* 3938 * Make sure the user has specified some command. 3939 */ 3940 if (argc < 2) { 3941 (void) fprintf(stderr, gettext("missing command\n")); 3942 usage(B_FALSE); 3943 } 3944 3945 cmdname = argv[1]; 3946 3947 /* 3948 * The 'umount' command is an alias for 'unmount' 3949 */ 3950 if (strcmp(cmdname, "umount") == 0) 3951 cmdname = "unmount"; 3952 3953 /* 3954 * The 'recv' command is an alias for 'receive' 3955 */ 3956 if (strcmp(cmdname, "recv") == 0) 3957 cmdname = "receive"; 3958 3959 /* 3960 * Special case '-?' 3961 */ 3962 if (strcmp(cmdname, "-?") == 0) 3963 usage(B_TRUE); 3964 3965 /* 3966 * 'volinit' and 'volfini' do not appear in the usage message, 3967 * so we have to special case them here. 3968 */ 3969 if (strcmp(cmdname, "volinit") == 0) 3970 return (do_volcheck(B_TRUE)); 3971 else if (strcmp(cmdname, "volfini") == 0) 3972 return (do_volcheck(B_FALSE)); 3973 3974 /* 3975 * Run the appropriate command. 3976 */ 3977 libzfs_mnttab_cache(g_zfs, B_TRUE); 3978 if (find_command_idx(cmdname, &i) == 0) { 3979 current_command = &command_table[i]; 3980 ret = command_table[i].func(argc - 1, argv + 1); 3981 } else if (strchr(cmdname, '=') != NULL) { 3982 verify(find_command_idx("set", &i) == 0); 3983 current_command = &command_table[i]; 3984 ret = command_table[i].func(argc, argv); 3985 } else { 3986 (void) fprintf(stderr, gettext("unrecognized " 3987 "command '%s'\n"), cmdname); 3988 usage(B_FALSE); 3989 } 3990 libzfs_mnttab_cache(g_zfs, B_FALSE); 3991 } 3992 3993 (void) fclose(mnttab_file); 3994 3995 libzfs_fini(g_zfs); 3996 3997 /* 3998 * The 'ZFS_ABORT' environment variable causes us to dump core on exit 3999 * for the purposes of running ::findleaks. 4000 */ 4001 if (getenv("ZFS_ABORT") != NULL) { 4002 (void) printf("dumping core by request\n"); 4003 abort(); 4004 } 4005 4006 return (ret); 4007} 4008