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[netbsd-mini2440.git] / external / cddl / osnet / dist / cmd / zfs / zfs_main.c
blob6db7cdcb6f5c5fb8712c2460e40f3a28e168a446
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 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <assert.h>
28 #include <ctype.h>
29 #include <errno.h>
30 #include <libgen.h>
31 #include <libintl.h>
32 #include <libuutil.h>
33 #include <libnvpair.h>
34 #include <locale.h>
35 #include <stddef.h>
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <strings.h>
39 #include <unistd.h>
40 #include <fcntl.h>
41 #include <zone.h>
42 #include <sys/mkdev.h>
43 #include <sys/mntent.h>
44 #include <sys/mnttab.h>
45 #include <sys/mount.h>
46 #include <sys/stat.h>
47 #include <sys/avl.h>
48
49 #include <libzfs.h>
50 #include <libuutil.h>
51
52 #include "zfs_iter.h"
53 #include "zfs_util.h"
54
55 libzfs_handle_t *g_zfs;
56
57 static FILE *mnttab_file;
58 static char history_str[HIS_MAX_RECORD_LEN];
59
60 static int zfs_do_clone(int argc, char **argv);
61 static int zfs_do_create(int argc, char **argv);
62 static int zfs_do_destroy(int argc, char **argv);
63 static int zfs_do_get(int argc, char **argv);
64 static int zfs_do_inherit(int argc, char **argv);
65 static int zfs_do_list(int argc, char **argv);
66 static int zfs_do_mount(int argc, char **argv);
67 static int zfs_do_rename(int argc, char **argv);
68 static int zfs_do_rollback(int argc, char **argv);
69 static int zfs_do_set(int argc, char **argv);
70 static int zfs_do_upgrade(int argc, char **argv);
71 static int zfs_do_snapshot(int argc, char **argv);
72 static int zfs_do_unmount(int argc, char **argv);
73 static int zfs_do_share(int argc, char **argv);
74 static int zfs_do_unshare(int argc, char **argv);
75 static int zfs_do_send(int argc, char **argv);
76 static int zfs_do_receive(int argc, char **argv);
77 static int zfs_do_promote(int argc, char **argv);
78 static int zfs_do_allow(int argc, char **argv);
79 static int zfs_do_unallow(int argc, char **argv);
80
81 /*
82 * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
83 */
84
85 #ifdef DEBUG
86 const char *
87 _umem_debug_init(void)
88 {
89 return ("default,verbose"); /* $UMEM_DEBUG setting */
90 }
91
92 const char *
93 _umem_logging_init(void)
94 {
95 return ("fail,contents"); /* $UMEM_LOGGING setting */
96 }
97 #endif
98
99 typedef enum {
100 HELP_CLONE,
101 HELP_CREATE,
102 HELP_DESTROY,
103 HELP_GET,
104 HELP_INHERIT,
105 HELP_UPGRADE,
106 HELP_LIST,
107 HELP_MOUNT,
108 HELP_PROMOTE,
109 HELP_RECEIVE,
110 HELP_RENAME,
111 HELP_ROLLBACK,
112 HELP_SEND,
113 HELP_SET,
114 HELP_SHARE,
115 HELP_SNAPSHOT,
116 HELP_UNMOUNT,
117 HELP_UNSHARE,
118 HELP_ALLOW,
119 HELP_UNALLOW
120 } zfs_help_t;
121
122 typedef struct zfs_command {
123 const char *name;
124 int (*func)(int argc, char **argv);
125 zfs_help_t usage;
126 } zfs_command_t;
127
128 /*
129 * Master command table. Each ZFS command has a name, associated function, and
130 * usage message. The usage messages need to be internationalized, so we have
131 * to have a function to return the usage message based on a command index.
132 *
133 * These commands are organized according to how they are displayed in the usage
134 * message. An empty command (one with a NULL name) indicates an empty line in
135 * the generic usage message.
136 */
137 static zfs_command_t command_table[] = {
138 { "create", zfs_do_create, HELP_CREATE },
139 { "destroy", zfs_do_destroy, HELP_DESTROY },
140 { NULL },
141 { "snapshot", zfs_do_snapshot, HELP_SNAPSHOT },
142 { "rollback", zfs_do_rollback, HELP_ROLLBACK },
143 { "clone", zfs_do_clone, HELP_CLONE },
144 { "promote", zfs_do_promote, HELP_PROMOTE },
145 { "rename", zfs_do_rename, HELP_RENAME },
146 { NULL },
147 { "list", zfs_do_list, HELP_LIST },
148 { NULL },
149 { "set", zfs_do_set, HELP_SET },
150 { "get", zfs_do_get, HELP_GET },
151 { "inherit", zfs_do_inherit, HELP_INHERIT },
152 { "upgrade", zfs_do_upgrade, HELP_UPGRADE },
153 { NULL },
154 { "mount", zfs_do_mount, HELP_MOUNT },
155 { "unmount", zfs_do_unmount, HELP_UNMOUNT },
156 { "share", zfs_do_share, HELP_SHARE },
157 { "unshare", zfs_do_unshare, HELP_UNSHARE },
158 { NULL },
159 { "send", zfs_do_send, HELP_SEND },
160 { "receive", zfs_do_receive, HELP_RECEIVE },
161 { NULL },
162 { "allow", zfs_do_allow, HELP_ALLOW },
163 { NULL },
164 { "unallow", zfs_do_unallow, HELP_UNALLOW },
165 };
166
167 #define NCOMMAND (sizeof (command_table) / sizeof (command_table[0]))
168
169 zfs_command_t *current_command;
170
171 static const char *
172 get_usage(zfs_help_t idx)
173 {
174 switch (idx) {
175 case HELP_CLONE:
176 return (gettext("\tclone [-p] [-o property=value] ... "
177 "<snapshot> <filesystem|volume>\n"));
178 case HELP_CREATE:
179 return (gettext("\tcreate [-p] [-o property=value] ... "
180 "<filesystem>\n"
181 "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
182 "-V <size> <volume>\n"));
183 case HELP_DESTROY:
184 return (gettext("\tdestroy [-rRf] "
185 "<filesystem|volume|snapshot>\n"));
186 case HELP_GET:
187 return (gettext("\tget [-rHp] [-o field[,...]] "
188 "[-s source[,...]]\n"
189 "\t <\"all\" | property[,...]> "
190 "[filesystem|volume|snapshot] ...\n"));
191 case HELP_INHERIT:
192 return (gettext("\tinherit [-r] <property> "
193 "<filesystem|volume|snapshot> ...\n"));
194 case HELP_UPGRADE:
195 return (gettext("\tupgrade [-v]\n"
196 "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
197 case HELP_LIST:
198 return (gettext("\tlist [-rH] [-o property[,...]] "
199 "[-t type[,...]] [-s property] ...\n"
200 "\t [-S property] ... "
201 "[filesystem|volume|snapshot] ...\n"));
202 case HELP_MOUNT:
203 return (gettext("\tmount\n"
204 "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
205 case HELP_PROMOTE:
206 return (gettext("\tpromote <clone-filesystem>\n"));
207 case HELP_RECEIVE:
208 return (gettext("\treceive [-vnF] <filesystem|volume|"
209 "snapshot>\n"
210 "\treceive [-vnF] -d <filesystem>\n"));
211 case HELP_RENAME:
212 return (gettext("\trename <filesystem|volume|snapshot> "
213 "<filesystem|volume|snapshot>\n"
214 "\trename -p <filesystem|volume> <filesystem|volume>\n"
215 "\trename -r <snapshot> <snapshot>"));
216 case HELP_ROLLBACK:
217 return (gettext("\trollback [-rRf] <snapshot>\n"));
218 case HELP_SEND:
219 return (gettext("\tsend [-R] [-[iI] snapshot] <snapshot>\n"));
220 case HELP_SET:
221 return (gettext("\tset <property=value> "
222 "<filesystem|volume|snapshot> ...\n"));
223 case HELP_SHARE:
224 return (gettext("\tshare <-a | filesystem>\n"));
225 case HELP_SNAPSHOT:
226 return (gettext("\tsnapshot [-r] [-o property=value] ... "
227 "<filesystem@snapname|volume@snapname>\n"));
228 case HELP_UNMOUNT:
229 return (gettext("\tunmount [-f] "
230 "<-a | filesystem|mountpoint>\n"));
231 case HELP_UNSHARE:
232 return (gettext("\tunshare [-f] "
233 "<-a | filesystem|mountpoint>\n"));
234 case HELP_ALLOW:
235 return (gettext("\tallow [-ldug] "
236 "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
237 "\t <filesystem|volume>\n"
238 "\tallow [-ld] -e <perm|@setname>[,...] "
239 "<filesystem|volume>\n"
240 "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
241 "\tallow -s @setname <perm|@setname>[,...] "
242 "<filesystem|volume>\n"));
243 case HELP_UNALLOW:
244 return (gettext("\tunallow [-rldug] "
245 "<\"everyone\"|user|group>[,...]\n"
246 "\t [<perm|@setname>[,...]] <filesystem|volume>\n"
247 "\tunallow [-rld] -e [<perm|@setname>[,...]] "
248 "<filesystem|volume>\n"
249 "\tunallow [-r] -c [<perm|@setname>[,...]] "
250 "<filesystem|volume>\n"
251 "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
252 "<filesystem|volume>\n"));
253 }
254
255 abort();
256 /* NOTREACHED */
257 }
258
259 /*
260 * Utility function to guarantee malloc() success.
261 */
262 void *
263 safe_malloc(size_t size)
264 {
265 void *data;
266
267 if ((data = calloc(1, size)) == NULL) {
268 (void) fprintf(stderr, "internal error: out of memory\n");
269 exit(1);
270 }
271
272 return (data);
273 }
274
275 /*
276 * Callback routine that will print out information for each of
277 * the properties.
278 */
279 static int
280 usage_prop_cb(int prop, void *cb)
281 {
282 FILE *fp = cb;
283
284 (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
285
286 if (zfs_prop_readonly(prop))
287 (void) fprintf(fp, " NO ");
288 else
289 (void) fprintf(fp, "YES ");
290
291 if (zfs_prop_inheritable(prop))
292 (void) fprintf(fp, " YES ");
293 else
294 (void) fprintf(fp, " NO ");
295
296 if (zfs_prop_values(prop) == NULL)
297 (void) fprintf(fp, "-\n");
298 else
299 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
300
301 return (ZPROP_CONT);
302 }
303
304 /*
305 * Display usage message. If we're inside a command, display only the usage for
306 * that command. Otherwise, iterate over the entire command table and display
307 * a complete usage message.
308 */
309 static void
310 usage(boolean_t requested)
311 {
312 int i;
313 boolean_t show_properties = B_FALSE;
314 boolean_t show_permissions = B_FALSE;
315 FILE *fp = requested ? stdout : stderr;
316
317 if (current_command == NULL) {
318
319 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
320 (void) fprintf(fp,
321 gettext("where 'command' is one of the following:\n\n"));
322
323 for (i = 0; i < NCOMMAND; i++) {
324 if (command_table[i].name == NULL)
325 (void) fprintf(fp, "\n");
326 else
327 (void) fprintf(fp, "%s",
328 get_usage(command_table[i].usage));
329 }
330
331 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
332 "pool/[dataset/]*dataset[@name]\n"));
333 } else {
334 (void) fprintf(fp, gettext("usage:\n"));
335 (void) fprintf(fp, "%s", get_usage(current_command->usage));
336 }
337
338 if (current_command != NULL &&
339 (strcmp(current_command->name, "set") == 0 ||
340 strcmp(current_command->name, "get") == 0 ||
341 strcmp(current_command->name, "inherit") == 0 ||
342 strcmp(current_command->name, "list") == 0))
343 show_properties = B_TRUE;
344
345 if (current_command != NULL &&
346 (strcmp(current_command->name, "allow") == 0 ||
347 strcmp(current_command->name, "unallow") == 0))
348 show_permissions = B_TRUE;
349
350 if (show_properties) {
351
352 (void) fprintf(fp,
353 gettext("\nThe following properties are supported:\n"));
354
355 (void) fprintf(fp, "\n\t%-14s %s %s %s\n\n",
356 "PROPERTY", "EDIT", "INHERIT", "VALUES");
357
358 /* Iterate over all properties */
359 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
360 ZFS_TYPE_DATASET);
361
362 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
363 "with standard units such as K, M, G, etc.\n"));
364 (void) fprintf(fp, gettext("\nUser-defined properties can "
365 "be specified by using a name containing a colon (:).\n"));
366
367 } else if (show_permissions) {
368 (void) fprintf(fp,
369 gettext("\nThe following permissions are supported:\n"));
370
371 zfs_deleg_permissions();
372 } else {
373 /*
374 * TRANSLATION NOTE:
375 * "zfs set|get" must not be localised this is the
376 * command name and arguments.
377 */
378
379 (void) fprintf(fp,
380 gettext("\nFor the property list, run: zfs set|get\n"));
381
382 (void) fprintf(fp,
383 gettext("\nFor the delegated permission list, run:"
384 " zfs allow|unallow\n"));
385 }
386
387 /*
388 * See comments at end of main().
389 */
390 if (getenv("ZFS_ABORT") != NULL) {
391 (void) printf("dumping core by request\n");
392 abort();
393 }
394
395 exit(requested ? 0 : 2);
396 }
397
398 static int
399 parseprop(nvlist_t *props)
400 {
401 char *propname = optarg;
402 char *propval, *strval;
403
404 if ((propval = strchr(propname, '=')) == NULL) {
405 (void) fprintf(stderr, gettext("missing "
406 "'=' for -o option\n"));
407 return (-1);
408 }
409 *propval = '\0';
410 propval++;
411 if (nvlist_lookup_string(props, propname, &strval) == 0) {
412 (void) fprintf(stderr, gettext("property '%s' "
413 "specified multiple times\n"), propname);
414 return (-1);
415 }
416 if (nvlist_add_string(props, propname, propval) != 0) {
417 (void) fprintf(stderr, gettext("internal "
418 "error: out of memory\n"));
419 return (-1);
420 }
421 return (0);
422
423 }
424
425 /*
426 * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
427 *
428 * Given an existing dataset, create a writable copy whose initial contents
429 * are the same as the source. The newly created dataset maintains a
430 * dependency on the original; the original cannot be destroyed so long as
431 * the clone exists.
432 *
433 * The '-p' flag creates all the non-existing ancestors of the target first.
434 */
435 static int
436 zfs_do_clone(int argc, char **argv)
437 {
438 zfs_handle_t *zhp = NULL;
439 boolean_t parents = B_FALSE;
440 nvlist_t *props;
441 int ret;
442 int c;
443
444 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
445 (void) fprintf(stderr, gettext("internal error: "
446 "out of memory\n"));
447 return (1);
448 }
449
450 /* check options */
451 while ((c = getopt(argc, argv, "o:p")) != -1) {
452 switch (c) {
453 case 'o':
454 if (parseprop(props))
455 return (1);
456 break;
457 case 'p':
458 parents = B_TRUE;
459 break;
460 case '?':
461 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
462 optopt);
463 goto usage;
464 }
465 }
466
467 argc -= optind;
468 argv += optind;
469
470 /* check number of arguments */
471 if (argc < 1) {
472 (void) fprintf(stderr, gettext("missing source dataset "
473 "argument\n"));
474 goto usage;
475 }
476 if (argc < 2) {
477 (void) fprintf(stderr, gettext("missing target dataset "
478 "argument\n"));
479 goto usage;
480 }
481 if (argc > 2) {
482 (void) fprintf(stderr, gettext("too many arguments\n"));
483 goto usage;
484 }
485
486 /* open the source dataset */
487 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
488 return (1);
489
490 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
491 ZFS_TYPE_VOLUME)) {
492 /*
493 * Now create the ancestors of the target dataset. If the
494 * target already exists and '-p' option was used we should not
495 * complain.
496 */
497 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
498 ZFS_TYPE_VOLUME))
499 return (0);
500 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
501 return (1);
502 }
503
504 /* pass to libzfs */
505 ret = zfs_clone(zhp, argv[1], props);
506
507 /* create the mountpoint if necessary */
508 if (ret == 0) {
509 zfs_handle_t *clone;
510
511 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
512 if (clone != NULL) {
513 if ((ret = zfs_mount(clone, NULL, 0)) == 0)
514 ret = zfs_share(clone);
515 zfs_close(clone);
516 }
517 }
518
519 zfs_close(zhp);
520 nvlist_free(props);
521
522 return (!!ret);
523
524 usage:
525 if (zhp)
526 zfs_close(zhp);
527 nvlist_free(props);
528 usage(B_FALSE);
529 return (-1);
530 }
531
532 /*
533 * zfs create [-p] [-o prop=value] ... fs
534 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
535 *
536 * Create a new dataset. This command can be used to create filesystems
537 * and volumes. Snapshot creation is handled by 'zfs snapshot'.
538 * For volumes, the user must specify a size to be used.
539 *
540 * The '-s' flag applies only to volumes, and indicates that we should not try
541 * to set the reservation for this volume. By default we set a reservation
542 * equal to the size for any volume. For pools with SPA_VERSION >=
543 * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
544 *
545 * The '-p' flag creates all the non-existing ancestors of the target first.
546 */
547 static int
548 zfs_do_create(int argc, char **argv)
549 {
550 zfs_type_t type = ZFS_TYPE_FILESYSTEM;
551 zfs_handle_t *zhp = NULL;
552 uint64_t volsize;
553 int c;
554 boolean_t noreserve = B_FALSE;
555 boolean_t bflag = B_FALSE;
556 boolean_t parents = B_FALSE;
557 int ret = 1;
558 nvlist_t *props;
559 uint64_t intval;
560 int canmount;
561
562 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
563 (void) fprintf(stderr, gettext("internal error: "
564 "out of memory\n"));
565 return (1);
566 }
567
568 /* check options */
569 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) {
570 switch (c) {
571 case 'V':
572 type = ZFS_TYPE_VOLUME;
573 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
574 (void) fprintf(stderr, gettext("bad volume "
575 "size '%s': %s\n"), optarg,
576 libzfs_error_description(g_zfs));
577 goto error;
578 }
579
580 if (nvlist_add_uint64(props,
581 zfs_prop_to_name(ZFS_PROP_VOLSIZE),
582 intval) != 0) {
583 (void) fprintf(stderr, gettext("internal "
584 "error: out of memory\n"));
585 goto error;
586 }
587 volsize = intval;
588 break;
589 case 'p':
590 parents = B_TRUE;
591 break;
592 case 'b':
593 bflag = B_TRUE;
594 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
595 (void) fprintf(stderr, gettext("bad volume "
596 "block size '%s': %s\n"), optarg,
597 libzfs_error_description(g_zfs));
598 goto error;
599 }
600
601 if (nvlist_add_uint64(props,
602 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
603 intval) != 0) {
604 (void) fprintf(stderr, gettext("internal "
605 "error: out of memory\n"));
606 goto error;
607 }
608 break;
609 case 'o':
610 if (parseprop(props))
611 goto error;
612 break;
613 case 's':
614 noreserve = B_TRUE;
615 break;
616 case ':':
617 (void) fprintf(stderr, gettext("missing size "
618 "argument\n"));
619 goto badusage;
620 break;
621 case '?':
622 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
623 optopt);
624 goto badusage;
625 }
626 }
627
628 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
629 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
630 "used when creating a volume\n"));
631 goto badusage;
632 }
633
634 argc -= optind;
635 argv += optind;
636
637 /* check number of arguments */
638 if (argc == 0) {
639 (void) fprintf(stderr, gettext("missing %s argument\n"),
640 zfs_type_to_name(type));
641 goto badusage;
642 }
643 if (argc > 1) {
644 (void) fprintf(stderr, gettext("too many arguments\n"));
645 goto badusage;
646 }
647
648 if (type == ZFS_TYPE_VOLUME && !noreserve) {
649 zpool_handle_t *zpool_handle;
650 uint64_t spa_version;
651 char *p;
652 zfs_prop_t resv_prop;
653 char *strval;
654
655 if (p = strchr(argv[0], '/'))
656 *p = '\0';
657 zpool_handle = zpool_open(g_zfs, argv[0]);
658 if (p != NULL)
659 *p = '/';
660 if (zpool_handle == NULL)
661 goto error;
662 spa_version = zpool_get_prop_int(zpool_handle,
663 ZPOOL_PROP_VERSION, NULL);
664 zpool_close(zpool_handle);
665 if (spa_version >= SPA_VERSION_REFRESERVATION)
666 resv_prop = ZFS_PROP_REFRESERVATION;
667 else
668 resv_prop = ZFS_PROP_RESERVATION;
669
670 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
671 &strval) != 0) {
672 if (nvlist_add_uint64(props,
673 zfs_prop_to_name(resv_prop), volsize) != 0) {
674 (void) fprintf(stderr, gettext("internal "
675 "error: out of memory\n"));
676 nvlist_free(props);
677 return (1);
678 }
679 }
680 }
681
682 if (parents && zfs_name_valid(argv[0], type)) {
683 /*
684 * Now create the ancestors of target dataset. If the target
685 * already exists and '-p' option was used we should not
686 * complain.
687 */
688 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
689 ret = 0;
690 goto error;
691 }
692 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
693 goto error;
694 }
695
696 /* pass to libzfs */
697 if (zfs_create(g_zfs, argv[0], type, props) != 0)
698 goto error;
699
700 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
701 goto error;
702 /*
703 * if the user doesn't want the dataset automatically mounted,
704 * then skip the mount/share step
705 */
706
707 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
708
709 /*
710 * Mount and/or share the new filesystem as appropriate. We provide a
711 * verbose error message to let the user know that their filesystem was
712 * in fact created, even if we failed to mount or share it.
713 */
714 ret = 0;
715 if (canmount == ZFS_CANMOUNT_ON) {
716 if (zfs_mount(zhp, NULL, 0) != 0) {
717 (void) fprintf(stderr, gettext("filesystem "
718 "successfully created, but not mounted\n"));
719 ret = 1;
720 } else if (zfs_share(zhp) != 0) {
721 (void) fprintf(stderr, gettext("filesystem "
722 "successfully created, but not shared\n"));
723 ret = 1;
724 }
725 }
726
727 error:
728 if (zhp)
729 zfs_close(zhp);
730 nvlist_free(props);
731 return (ret);
732 badusage:
733 nvlist_free(props);
734 usage(B_FALSE);
735 return (2);
736 }
737
738 /*
739 * zfs destroy [-rf] <fs, snap, vol>
740 *
741 * -r Recursively destroy all children
742 * -R Recursively destroy all dependents, including clones
743 * -f Force unmounting of any dependents
744 *
745 * Destroys the given dataset. By default, it will unmount any filesystems,
746 * and refuse to destroy a dataset that has any dependents. A dependent can
747 * either be a child, or a clone of a child.
748 */
749 typedef struct destroy_cbdata {
750 boolean_t cb_first;
751 int cb_force;
752 int cb_recurse;
753 int cb_error;
754 int cb_needforce;
755 int cb_doclones;
756 boolean_t cb_closezhp;
757 zfs_handle_t *cb_target;
758 char *cb_snapname;
759 } destroy_cbdata_t;
760
761 /*
762 * Check for any dependents based on the '-r' or '-R' flags.
763 */
764 static int
765 destroy_check_dependent(zfs_handle_t *zhp, void *data)
766 {
767 destroy_cbdata_t *cbp = data;
768 const char *tname = zfs_get_name(cbp->cb_target);
769 const char *name = zfs_get_name(zhp);
770
771 if (strncmp(tname, name, strlen(tname)) == 0 &&
772 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
773 /*
774 * This is a direct descendant, not a clone somewhere else in
775 * the hierarchy.
776 */
777 if (cbp->cb_recurse)
778 goto out;
779
780 if (cbp->cb_first) {
781 (void) fprintf(stderr, gettext("cannot destroy '%s': "
782 "%s has children\n"),
783 zfs_get_name(cbp->cb_target),
784 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
785 (void) fprintf(stderr, gettext("use '-r' to destroy "
786 "the following datasets:\n"));
787 cbp->cb_first = B_FALSE;
788 cbp->cb_error = 1;
789 }
790
791 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
792 } else {
793 /*
794 * This is a clone. We only want to report this if the '-r'
795 * wasn't specified, or the target is a snapshot.
796 */
797 if (!cbp->cb_recurse &&
798 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
799 goto out;
800
801 if (cbp->cb_first) {
802 (void) fprintf(stderr, gettext("cannot destroy '%s': "
803 "%s has dependent clones\n"),
804 zfs_get_name(cbp->cb_target),
805 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
806 (void) fprintf(stderr, gettext("use '-R' to destroy "
807 "the following datasets:\n"));
808 cbp->cb_first = B_FALSE;
809 cbp->cb_error = 1;
810 }
811
812 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
813 }
814
815 out:
816 zfs_close(zhp);
817 return (0);
818 }
819
820 static int
821 destroy_callback(zfs_handle_t *zhp, void *data)
822 {
823 destroy_cbdata_t *cbp = data;
824
825 /*
826 * Ignore pools (which we've already flagged as an error before getting
827 * here.
828 */
829 if (strchr(zfs_get_name(zhp), '/') == NULL &&
830 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
831 zfs_close(zhp);
832 return (0);
833 }
834
835 /*
836 * Bail out on the first error.
837 */
838 if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 ||
839 zfs_destroy(zhp) != 0) {
840 zfs_close(zhp);
841 return (-1);
842 }
843
844 zfs_close(zhp);
845 return (0);
846 }
847
848 static int
849 destroy_snap_clones(zfs_handle_t *zhp, void *arg)
850 {
851 destroy_cbdata_t *cbp = arg;
852 char thissnap[MAXPATHLEN];
853 zfs_handle_t *szhp;
854 boolean_t closezhp = cbp->cb_closezhp;
855 int rv;
856
857 (void) snprintf(thissnap, sizeof (thissnap),
858 "%s@%s", zfs_get_name(zhp), cbp->cb_snapname);
859
860 libzfs_print_on_error(g_zfs, B_FALSE);
861 szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT);
862 libzfs_print_on_error(g_zfs, B_TRUE);
863 if (szhp) {
864 /*
865 * Destroy any clones of this snapshot
866 */
867 if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback,
868 cbp) != 0) {
869 zfs_close(szhp);
870 if (closezhp)
871 zfs_close(zhp);
872 return (-1);
873 }
874 zfs_close(szhp);
875 }
876
877 cbp->cb_closezhp = B_TRUE;
878 rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg);
879 if (closezhp)
880 zfs_close(zhp);
881 return (rv);
882 }
883
884 static int
885 zfs_do_destroy(int argc, char **argv)
886 {
887 destroy_cbdata_t cb = { 0 };
888 int c;
889 zfs_handle_t *zhp;
890 char *cp;
891
892 /* check options */
893 while ((c = getopt(argc, argv, "frR")) != -1) {
894 switch (c) {
895 case 'f':
896 cb.cb_force = 1;
897 break;
898 case 'r':
899 cb.cb_recurse = 1;
900 break;
901 case 'R':
902 cb.cb_recurse = 1;
903 cb.cb_doclones = 1;
904 break;
905 case '?':
906 default:
907 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
908 optopt);
909 usage(B_FALSE);
910 }
911 }
912
913 argc -= optind;
914 argv += optind;
915
916 /* check number of arguments */
917 if (argc == 0) {
918 (void) fprintf(stderr, gettext("missing path argument\n"));
919 usage(B_FALSE);
920 }
921 if (argc > 1) {
922 (void) fprintf(stderr, gettext("too many arguments\n"));
923 usage(B_FALSE);
924 }
925
926 /*
927 * If we are doing recursive destroy of a snapshot, then the
928 * named snapshot may not exist. Go straight to libzfs.
929 */
930 if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) {
931 int ret;
932
933 *cp = '\0';
934 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
935 return (1);
936 *cp = '@';
937 cp++;
938
939 if (cb.cb_doclones) {
940 cb.cb_snapname = cp;
941 if (destroy_snap_clones(zhp, &cb) != 0) {
942 zfs_close(zhp);
943 return (1);
944 }
945 }
946
947 ret = zfs_destroy_snaps(zhp, cp);
948 zfs_close(zhp);
949 if (ret) {
950 (void) fprintf(stderr,
951 gettext("no snapshots destroyed\n"));
952 }
953 return (ret != 0);
954 }
955
956
957 /* Open the given dataset */
958 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
959 return (1);
960
961 cb.cb_target = zhp;
962
963 /*
964 * Perform an explicit check for pools before going any further.
965 */
966 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
967 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
968 (void) fprintf(stderr, gettext("cannot destroy '%s': "
969 "operation does not apply to pools\n"),
970 zfs_get_name(zhp));
971 (void) fprintf(stderr, gettext("use 'zfs destroy -r "
972 "%s' to destroy all datasets in the pool\n"),
973 zfs_get_name(zhp));
974 (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
975 "to destroy the pool itself\n"), zfs_get_name(zhp));
976 zfs_close(zhp);
977 return (1);
978 }
979
980 /*
981 * Check for any dependents and/or clones.
982 */
983 cb.cb_first = B_TRUE;
984 if (!cb.cb_doclones &&
985 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
986 &cb) != 0) {
987 zfs_close(zhp);
988 return (1);
989 }
990
991 if (cb.cb_error ||
992 zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0) {
993 zfs_close(zhp);
994 return (1);
995 }
996
997 /*
998 * Do the real thing. The callback will close the handle regardless of
999 * whether it succeeds or not.
1000 */
1001
1002 if (destroy_callback(zhp, &cb) != 0)
1003 return (1);
1004
1005
1006 return (0);
1007 }
1008
1009 /*
1010 * zfs get [-rHp] [-o field[,field]...] [-s source[,source]...]
1011 * < all | property[,property]... > < fs | snap | vol > ...
1012 *
1013 * -r recurse over any child datasets
1014 * -H scripted mode. Headers are stripped, and fields are separated
1015 * by tabs instead of spaces.
1016 * -o Set of fields to display. One of "name,property,value,source".
1017 * Default is all four.
1018 * -s Set of sources to allow. One of
1019 * "local,default,inherited,temporary,none". Default is all
1020 * five.
1021 * -p Display values in parsable (literal) format.
1022 *
1023 * Prints properties for the given datasets. The user can control which
1024 * columns to display as well as which property types to allow.
1025 */
1026
1027 /*
1028 * Invoked to display the properties for a single dataset.
1029 */
1030 static int
1031 get_callback(zfs_handle_t *zhp, void *data)
1032 {
1033 char buf[ZFS_MAXPROPLEN];
1034 zprop_source_t sourcetype;
1035 char source[ZFS_MAXNAMELEN];
1036 zprop_get_cbdata_t *cbp = data;
1037 nvlist_t *userprop = zfs_get_user_props(zhp);
1038 zprop_list_t *pl = cbp->cb_proplist;
1039 nvlist_t *propval;
1040 char *strval;
1041 char *sourceval;
1042
1043 for (; pl != NULL; pl = pl->pl_next) {
1044 /*
1045 * Skip the special fake placeholder. This will also skip over
1046 * the name property when 'all' is specified.
1047 */
1048 if (pl->pl_prop == ZFS_PROP_NAME &&
1049 pl == cbp->cb_proplist)
1050 continue;
1051
1052 if (pl->pl_prop != ZPROP_INVAL) {
1053 if (zfs_prop_get(zhp, pl->pl_prop, buf,
1054 sizeof (buf), &sourcetype, source,
1055 sizeof (source),
1056 cbp->cb_literal) != 0) {
1057 if (pl->pl_all)
1058 continue;
1059 if (!zfs_prop_valid_for_type(pl->pl_prop,
1060 ZFS_TYPE_DATASET)) {
1061 (void) fprintf(stderr,
1062 gettext("No such property '%s'\n"),
1063 zfs_prop_to_name(pl->pl_prop));
1064 continue;
1065 }
1066 sourcetype = ZPROP_SRC_NONE;
1067 (void) strlcpy(buf, "-", sizeof (buf));
1068 }
1069
1070 zprop_print_one_property(zfs_get_name(zhp), cbp,
1071 zfs_prop_to_name(pl->pl_prop),
1072 buf, sourcetype, source);
1073 } else {
1074 if (nvlist_lookup_nvlist(userprop,
1075 pl->pl_user_prop, &propval) != 0) {
1076 if (pl->pl_all)
1077 continue;
1078 sourcetype = ZPROP_SRC_NONE;
1079 strval = "-";
1080 } else {
1081 verify(nvlist_lookup_string(propval,
1082 ZPROP_VALUE, &strval) == 0);
1083 verify(nvlist_lookup_string(propval,
1084 ZPROP_SOURCE, &sourceval) == 0);
1085
1086 if (strcmp(sourceval,
1087 zfs_get_name(zhp)) == 0) {
1088 sourcetype = ZPROP_SRC_LOCAL;
1089 } else {
1090 sourcetype = ZPROP_SRC_INHERITED;
1091 (void) strlcpy(source,
1092 sourceval, sizeof (source));
1093 }
1094 }
1095
1096 zprop_print_one_property(zfs_get_name(zhp), cbp,
1097 pl->pl_user_prop, strval, sourcetype,
1098 source);
1099 }
1100 }
1101
1102 return (0);
1103 }
1104
1105 static int
1106 zfs_do_get(int argc, char **argv)
1107 {
1108 zprop_get_cbdata_t cb = { 0 };
1109 int i, c, flags = 0;
1110 char *value, *fields;
1111 int ret;
1112 zprop_list_t fake_name = { 0 };
1113
1114 /*
1115 * Set up default columns and sources.
1116 */
1117 cb.cb_sources = ZPROP_SRC_ALL;
1118 cb.cb_columns[0] = GET_COL_NAME;
1119 cb.cb_columns[1] = GET_COL_PROPERTY;
1120 cb.cb_columns[2] = GET_COL_VALUE;
1121 cb.cb_columns[3] = GET_COL_SOURCE;
1122 cb.cb_type = ZFS_TYPE_DATASET;
1123
1124 /* check options */
1125 while ((c = getopt(argc, argv, ":o:s:rHp")) != -1) {
1126 switch (c) {
1127 case 'p':
1128 cb.cb_literal = B_TRUE;
1129 break;
1130 case 'r':
1131 flags |= ZFS_ITER_RECURSE;
1132 break;
1133 case 'H':
1134 cb.cb_scripted = B_TRUE;
1135 break;
1136 case ':':
1137 (void) fprintf(stderr, gettext("missing argument for "
1138 "'%c' option\n"), optopt);
1139 usage(B_FALSE);
1140 break;
1141 case 'o':
1142 /*
1143 * Process the set of columns to display. We zero out
1144 * the structure to give us a blank slate.
1145 */
1146 bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1147 i = 0;
1148 while (*optarg != '\0') {
1149 static char *col_subopts[] =
1150 { "name", "property", "value", "source",
1151 NULL };
1152
1153 if (i == 4) {
1154 (void) fprintf(stderr, gettext("too "
1155 "many fields given to -o "
1156 "option\n"));
1157 usage(B_FALSE);
1158 }
1159
1160 switch (getsubopt(&optarg, col_subopts,
1161 &value)) {
1162 case 0:
1163 cb.cb_columns[i++] = GET_COL_NAME;
1164 break;
1165 case 1:
1166 cb.cb_columns[i++] = GET_COL_PROPERTY;
1167 break;
1168 case 2:
1169 cb.cb_columns[i++] = GET_COL_VALUE;
1170 break;
1171 case 3:
1172 cb.cb_columns[i++] = GET_COL_SOURCE;
1173 break;
1174 default:
1175 (void) fprintf(stderr,
1176 gettext("invalid column name "
1177 "'%s'\n"), value);
1178 usage(B_FALSE);
1179 }
1180 }
1181 break;
1182
1183 case 's':
1184 cb.cb_sources = 0;
1185 while (*optarg != '\0') {
1186 static char *source_subopts[] = {
1187 "local", "default", "inherited",
1188 "temporary", "none", NULL };
1189
1190 switch (getsubopt(&optarg, source_subopts,
1191 &value)) {
1192 case 0:
1193 cb.cb_sources |= ZPROP_SRC_LOCAL;
1194 break;
1195 case 1:
1196 cb.cb_sources |= ZPROP_SRC_DEFAULT;
1197 break;
1198 case 2:
1199 cb.cb_sources |= ZPROP_SRC_INHERITED;
1200 break;
1201 case 3:
1202 cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1203 break;
1204 case 4:
1205 cb.cb_sources |= ZPROP_SRC_NONE;
1206 break;
1207 default:
1208 (void) fprintf(stderr,
1209 gettext("invalid source "
1210 "'%s'\n"), value);
1211 usage(B_FALSE);
1212 }
1213 }
1214 break;
1215
1216 case '?':
1217 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1218 optopt);
1219 usage(B_FALSE);
1220 }
1221 }
1222
1223 argc -= optind;
1224 argv += optind;
1225
1226 if (argc < 1) {
1227 (void) fprintf(stderr, gettext("missing property "
1228 "argument\n"));
1229 usage(B_FALSE);
1230 }
1231
1232 fields = argv[0];
1233
1234 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1235 != 0)
1236 usage(B_FALSE);
1237
1238 argc--;
1239 argv++;
1240
1241 /*
1242 * As part of zfs_expand_proplist(), we keep track of the maximum column
1243 * width for each property. For the 'NAME' (and 'SOURCE') columns, we
1244 * need to know the maximum name length. However, the user likely did
1245 * not specify 'name' as one of the properties to fetch, so we need to
1246 * make sure we always include at least this property for
1247 * print_get_headers() to work properly.
1248 */
1249 if (cb.cb_proplist != NULL) {
1250 fake_name.pl_prop = ZFS_PROP_NAME;
1251 fake_name.pl_width = strlen(gettext("NAME"));
1252 fake_name.pl_next = cb.cb_proplist;
1253 cb.cb_proplist = &fake_name;
1254 }
1255
1256 cb.cb_first = B_TRUE;
1257
1258 /* run for each object */
1259 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, NULL,
1260 &cb.cb_proplist, get_callback, &cb);
1261
1262 if (cb.cb_proplist == &fake_name)
1263 zprop_free_list(fake_name.pl_next);
1264 else
1265 zprop_free_list(cb.cb_proplist);
1266
1267 return (ret);
1268 }
1269
1270 /*
1271 * inherit [-r] <property> <fs|vol> ...
1272 *
1273 * -r Recurse over all children
1274 *
1275 * For each dataset specified on the command line, inherit the given property
1276 * from its parent. Inheriting a property at the pool level will cause it to
1277 * use the default value. The '-r' flag will recurse over all children, and is
1278 * useful for setting a property on a hierarchy-wide basis, regardless of any
1279 * local modifications for each dataset.
1280 */
1281
1282 static int
1283 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1284 {
1285 char *propname = data;
1286 zfs_prop_t prop = zfs_name_to_prop(propname);
1287
1288 /*
1289 * If we're doing it recursively, then ignore properties that
1290 * are not valid for this type of dataset.
1291 */
1292 if (prop != ZPROP_INVAL &&
1293 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1294 return (0);
1295
1296 return (zfs_prop_inherit(zhp, propname) != 0);
1297 }
1298
1299 static int
1300 inherit_cb(zfs_handle_t *zhp, void *data)
1301 {
1302 char *propname = data;
1303
1304 return (zfs_prop_inherit(zhp, propname) != 0);
1305 }
1306
1307 static int
1308 zfs_do_inherit(int argc, char **argv)
1309 {
1310 int c;
1311 zfs_prop_t prop;
1312 char *propname;
1313 int ret;
1314 int flags = 0;
1315
1316 /* check options */
1317 while ((c = getopt(argc, argv, "r")) != -1) {
1318 switch (c) {
1319 case 'r':
1320 flags |= ZFS_ITER_RECURSE;
1321 break;
1322 case '?':
1323 default:
1324 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1325 optopt);
1326 usage(B_FALSE);
1327 }
1328 }
1329
1330 argc -= optind;
1331 argv += optind;
1332
1333 /* check number of arguments */
1334 if (argc < 1) {
1335 (void) fprintf(stderr, gettext("missing property argument\n"));
1336 usage(B_FALSE);
1337 }
1338 if (argc < 2) {
1339 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1340 usage(B_FALSE);
1341 }
1342
1343 propname = argv[0];
1344 argc--;
1345 argv++;
1346
1347 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1348 if (zfs_prop_readonly(prop)) {
1349 (void) fprintf(stderr, gettext(
1350 "%s property is read-only\n"),
1351 propname);
1352 return (1);
1353 }
1354 if (!zfs_prop_inheritable(prop)) {
1355 (void) fprintf(stderr, gettext("'%s' property cannot "
1356 "be inherited\n"), propname);
1357 if (prop == ZFS_PROP_QUOTA ||
1358 prop == ZFS_PROP_RESERVATION ||
1359 prop == ZFS_PROP_REFQUOTA ||
1360 prop == ZFS_PROP_REFRESERVATION)
1361 (void) fprintf(stderr, gettext("use 'zfs set "
1362 "%s=none' to clear\n"), propname);
1363 return (1);
1364 }
1365 } else if (!zfs_prop_user(propname)) {
1366 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1367 propname);
1368 usage(B_FALSE);
1369 }
1370
1371 if (flags & ZFS_ITER_RECURSE) {
1372 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1373 NULL, NULL, inherit_recurse_cb, propname);
1374 } else {
1375 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1376 NULL, NULL, inherit_cb, propname);
1377 }
1378
1379 return (ret);
1380 }
1381
1382 typedef struct upgrade_cbdata {
1383 uint64_t cb_numupgraded;
1384 uint64_t cb_numsamegraded;
1385 uint64_t cb_numfailed;
1386 uint64_t cb_version;
1387 boolean_t cb_newer;
1388 boolean_t cb_foundone;
1389 char cb_lastfs[ZFS_MAXNAMELEN];
1390 } upgrade_cbdata_t;
1391
1392 static int
1393 same_pool(zfs_handle_t *zhp, const char *name)
1394 {
1395 int len1 = strcspn(name, "/@");
1396 const char *zhname = zfs_get_name(zhp);
1397 int len2 = strcspn(zhname, "/@");
1398
1399 if (len1 != len2)
1400 return (B_FALSE);
1401 return (strncmp(name, zhname, len1) == 0);
1402 }
1403
1404 static int
1405 upgrade_list_callback(zfs_handle_t *zhp, void *data)
1406 {
1407 upgrade_cbdata_t *cb = data;
1408 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1409
1410 /* list if it's old/new */
1411 if ((!cb->cb_newer && version < ZPL_VERSION) ||
1412 (cb->cb_newer && version > ZPL_VERSION)) {
1413 char *str;
1414 if (cb->cb_newer) {
1415 str = gettext("The following filesystems are "
1416 "formatted using a newer software version and\n"
1417 "cannot be accessed on the current system.\n\n");
1418 } else {
1419 str = gettext("The following filesystems are "
1420 "out of date, and can be upgraded. After being\n"
1421 "upgraded, these filesystems (and any 'zfs send' "
1422 "streams generated from\n"
1423 "subsequent snapshots) will no longer be "
1424 "accessible by older software versions.\n\n");
1425 }
1426
1427 if (!cb->cb_foundone) {
1428 (void) puts(str);
1429 (void) printf(gettext("VER FILESYSTEM\n"));
1430 (void) printf(gettext("--- ------------\n"));
1431 cb->cb_foundone = B_TRUE;
1432 }
1433
1434 (void) printf("%2u %s\n", version, zfs_get_name(zhp));
1435 }
1436
1437 return (0);
1438 }
1439
1440 static int
1441 upgrade_set_callback(zfs_handle_t *zhp, void *data)
1442 {
1443 upgrade_cbdata_t *cb = data;
1444 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1445
1446 if (cb->cb_version >= ZPL_VERSION_FUID) {
1447 int spa_version;
1448
1449 if (zfs_spa_version(zhp, &spa_version) < 0)
1450 return (-1);
1451
1452 if (spa_version < SPA_VERSION_FUID) {
1453 /* can't upgrade */
1454 (void) printf(gettext("%s: can not be upgraded; "
1455 "the pool version needs to first be upgraded\nto "
1456 "version %d\n\n"),
1457 zfs_get_name(zhp), SPA_VERSION_FUID);
1458 cb->cb_numfailed++;
1459 return (0);
1460 }
1461 }
1462
1463 /* upgrade */
1464 if (version < cb->cb_version) {
1465 char verstr[16];
1466 (void) snprintf(verstr, sizeof (verstr),
1467 "%llu", cb->cb_version);
1468 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
1469 /*
1470 * If they did "zfs upgrade -a", then we could
1471 * be doing ioctls to different pools. We need
1472 * to log this history once to each pool.
1473 */
1474 verify(zpool_stage_history(g_zfs, history_str) == 0);
1475 }
1476 if (zfs_prop_set(zhp, "version", verstr) == 0)
1477 cb->cb_numupgraded++;
1478 else
1479 cb->cb_numfailed++;
1480 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
1481 } else if (version > cb->cb_version) {
1482 /* can't downgrade */
1483 (void) printf(gettext("%s: can not be downgraded; "
1484 "it is already at version %u\n"),
1485 zfs_get_name(zhp), version);
1486 cb->cb_numfailed++;
1487 } else {
1488 cb->cb_numsamegraded++;
1489 }
1490 return (0);
1491 }
1492
1493 /*
1494 * zfs upgrade
1495 * zfs upgrade -v
1496 * zfs upgrade [-r] [-V <version>] <-a | filesystem>
1497 */
1498 static int
1499 zfs_do_upgrade(int argc, char **argv)
1500 {
1501 boolean_t all = B_FALSE;
1502 boolean_t showversions = B_FALSE;
1503 int ret;
1504 upgrade_cbdata_t cb = { 0 };
1505 char c;
1506 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1507
1508 /* check options */
1509 while ((c = getopt(argc, argv, "rvV:a")) != -1) {
1510 switch (c) {
1511 case 'r':
1512 flags |= ZFS_ITER_RECURSE;
1513 break;
1514 case 'v':
1515 showversions = B_TRUE;
1516 break;
1517 case 'V':
1518 if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
1519 optarg, &cb.cb_version) != 0) {
1520 (void) fprintf(stderr,
1521 gettext("invalid version %s\n"), optarg);
1522 usage(B_FALSE);
1523 }
1524 break;
1525 case 'a':
1526 all = B_TRUE;
1527 break;
1528 case '?':
1529 default:
1530 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1531 optopt);
1532 usage(B_FALSE);
1533 }
1534 }
1535
1536 argc -= optind;
1537 argv += optind;
1538
1539 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
1540 usage(B_FALSE);
1541 if (showversions && (flags & ZFS_ITER_RECURSE || all ||
1542 cb.cb_version || argc))
1543 usage(B_FALSE);
1544 if ((all || argc) && (showversions))
1545 usage(B_FALSE);
1546 if (all && argc)
1547 usage(B_FALSE);
1548
1549 if (showversions) {
1550 /* Show info on available versions. */
1551 (void) printf(gettext("The following filesystem versions are "
1552 "supported:\n\n"));
1553 (void) printf(gettext("VER DESCRIPTION\n"));
1554 (void) printf("--- -----------------------------------------"
1555 "---------------\n");
1556 (void) printf(gettext(" 1 Initial ZFS filesystem version\n"));
1557 (void) printf(gettext(" 2 Enhanced directory entries\n"));
1558 (void) printf(gettext(" 3 Case insensitive and File system "
1559 "unique identifer (FUID)\n"));
1560 (void) printf(gettext("\nFor more information on a particular "
1561 "version, including supported releases, see:\n\n"));
1562 (void) printf("http://www.opensolaris.org/os/community/zfs/"
1563 "version/zpl/N\n\n");
1564 (void) printf(gettext("Where 'N' is the version number.\n"));
1565 ret = 0;
1566 } else if (argc || all) {
1567 /* Upgrade filesystems */
1568 if (cb.cb_version == 0)
1569 cb.cb_version = ZPL_VERSION;
1570 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
1571 NULL, NULL, upgrade_set_callback, &cb);
1572 (void) printf(gettext("%llu filesystems upgraded\n"),
1573 cb.cb_numupgraded);
1574 if (cb.cb_numsamegraded) {
1575 (void) printf(gettext("%llu filesystems already at "
1576 "this version\n"),
1577 cb.cb_numsamegraded);
1578 }
1579 if (cb.cb_numfailed != 0)
1580 ret = 1;
1581 } else {
1582 /* List old-version filesytems */
1583 boolean_t found;
1584 (void) printf(gettext("This system is currently running "
1585 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
1586
1587 flags |= ZFS_ITER_RECURSE;
1588 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
1589 NULL, NULL, upgrade_list_callback, &cb);
1590
1591 found = cb.cb_foundone;
1592 cb.cb_foundone = B_FALSE;
1593 cb.cb_newer = B_TRUE;
1594
1595 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
1596 NULL, NULL, upgrade_list_callback, &cb);
1597
1598 if (!cb.cb_foundone && !found) {
1599 (void) printf(gettext("All filesystems are "
1600 "formatted with the current version.\n"));
1601 }
1602 }
1603
1604 return (ret);
1605 }
1606
1607 /*
1608 * list [-rH] [-o property[,property]...] [-t type[,type]...]
1609 * [-s property [-s property]...] [-S property [-S property]...]
1610 * <dataset> ...
1611 *
1612 * -r Recurse over all children
1613 * -H Scripted mode; elide headers and separate columns by tabs
1614 * -o Control which fields to display.
1615 * -t Control which object types to display.
1616 * -s Specify sort columns, descending order.
1617 * -S Specify sort columns, ascending order.
1618 *
1619 * When given no arguments, lists all filesystems in the system.
1620 * Otherwise, list the specified datasets, optionally recursing down them if
1621 * '-r' is specified.
1622 */
1623 typedef struct list_cbdata {
1624 boolean_t cb_first;
1625 boolean_t cb_scripted;
1626 zprop_list_t *cb_proplist;
1627 } list_cbdata_t;
1628
1629 /*
1630 * Given a list of columns to display, output appropriate headers for each one.
1631 */
1632 static void
1633 print_header(zprop_list_t *pl)
1634 {
1635 char headerbuf[ZFS_MAXPROPLEN];
1636 const char *header;
1637 int i;
1638 boolean_t first = B_TRUE;
1639 boolean_t right_justify;
1640
1641 for (; pl != NULL; pl = pl->pl_next) {
1642 if (!first) {
1643 (void) printf(" ");
1644 } else {
1645 first = B_FALSE;
1646 }
1647
1648 right_justify = B_FALSE;
1649 if (pl->pl_prop != ZPROP_INVAL) {
1650 header = zfs_prop_column_name(pl->pl_prop);
1651 right_justify = zfs_prop_align_right(pl->pl_prop);
1652 } else {
1653 for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
1654 headerbuf[i] = toupper(pl->pl_user_prop[i]);
1655 headerbuf[i] = '\0';
1656 header = headerbuf;
1657 }
1658
1659 if (pl->pl_next == NULL && !right_justify)
1660 (void) printf("%s", header);
1661 else if (right_justify)
1662 (void) printf("%*s", pl->pl_width, header);
1663 else
1664 (void) printf("%-*s", pl->pl_width, header);
1665 }
1666
1667 (void) printf("\n");
1668 }
1669
1670 /*
1671 * Given a dataset and a list of fields, print out all the properties according
1672 * to the described layout.
1673 */
1674 static void
1675 print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted)
1676 {
1677 boolean_t first = B_TRUE;
1678 char property[ZFS_MAXPROPLEN];
1679 nvlist_t *userprops = zfs_get_user_props(zhp);
1680 nvlist_t *propval;
1681 char *propstr;
1682 boolean_t right_justify;
1683 int width;
1684
1685 for (; pl != NULL; pl = pl->pl_next) {
1686 if (!first) {
1687 if (scripted)
1688 (void) printf("\t");
1689 else
1690 (void) printf(" ");
1691 } else {
1692 first = B_FALSE;
1693 }
1694
1695 right_justify = B_FALSE;
1696 if (pl->pl_prop != ZPROP_INVAL) {
1697 if (zfs_prop_get(zhp, pl->pl_prop, property,
1698 sizeof (property), NULL, NULL, 0, B_FALSE) != 0)
1699 propstr = "-";
1700 else
1701 propstr = property;
1702
1703 right_justify = zfs_prop_align_right(pl->pl_prop);
1704 } else {
1705 if (nvlist_lookup_nvlist(userprops,
1706 pl->pl_user_prop, &propval) != 0)
1707 propstr = "-";
1708 else
1709 verify(nvlist_lookup_string(propval,
1710 ZPROP_VALUE, &propstr) == 0);
1711 }
1712
1713 width = pl->pl_width;
1714
1715 /*
1716 * If this is being called in scripted mode, or if this is the
1717 * last column and it is left-justified, don't include a width
1718 * format specifier.
1719 */
1720 if (scripted || (pl->pl_next == NULL && !right_justify))
1721 (void) printf("%s", propstr);
1722 else if (right_justify)
1723 (void) printf("%*s", width, propstr);
1724 else
1725 (void) printf("%-*s", width, propstr);
1726 }
1727
1728 (void) printf("\n");
1729 }
1730
1731 /*
1732 * Generic callback function to list a dataset or snapshot.
1733 */
1734 static int
1735 list_callback(zfs_handle_t *zhp, void *data)
1736 {
1737 list_cbdata_t *cbp = data;
1738
1739 if (cbp->cb_first) {
1740 if (!cbp->cb_scripted)
1741 print_header(cbp->cb_proplist);
1742 cbp->cb_first = B_FALSE;
1743 }
1744
1745 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted);
1746
1747 return (0);
1748 }
1749
1750 static int
1751 zfs_do_list(int argc, char **argv)
1752 {
1753 int c;
1754 boolean_t scripted = B_FALSE;
1755 static char default_fields[] =
1756 "name,used,available,referenced,mountpoint";
1757 int types = ZFS_TYPE_DATASET;
1758 boolean_t types_specified = B_FALSE;
1759 char *fields = NULL;
1760 list_cbdata_t cb = { 0 };
1761 char *value;
1762 int ret;
1763 zfs_sort_column_t *sortcol = NULL;
1764 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
1765
1766 /* check options */
1767 while ((c = getopt(argc, argv, ":o:rt:Hs:S:")) != -1) {
1768 switch (c) {
1769 case 'o':
1770 fields = optarg;
1771 break;
1772 case 'r':
1773 flags |= ZFS_ITER_RECURSE;
1774 break;
1775 case 'H':
1776 scripted = B_TRUE;
1777 break;
1778 case 's':
1779 if (zfs_add_sort_column(&sortcol, optarg,
1780 B_FALSE) != 0) {
1781 (void) fprintf(stderr,
1782 gettext("invalid property '%s'\n"), optarg);
1783 usage(B_FALSE);
1784 }
1785 break;
1786 case 'S':
1787 if (zfs_add_sort_column(&sortcol, optarg,
1788 B_TRUE) != 0) {
1789 (void) fprintf(stderr,
1790 gettext("invalid property '%s'\n"), optarg);
1791 usage(B_FALSE);
1792 }
1793 break;
1794 case 't':
1795 types = 0;
1796 types_specified = B_TRUE;
1797 flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1798 while (*optarg != '\0') {
1799 static char *type_subopts[] = { "filesystem",
1800 "volume", "snapshot", "all", NULL };
1801
1802 switch (getsubopt(&optarg, type_subopts,
1803 &value)) {
1804 case 0:
1805 types |= ZFS_TYPE_FILESYSTEM;
1806 break;
1807 case 1:
1808 types |= ZFS_TYPE_VOLUME;
1809 break;
1810 case 2:
1811 types |= ZFS_TYPE_SNAPSHOT;
1812 break;
1813 case 3:
1814 types = ZFS_TYPE_DATASET;
1815 break;
1816
1817 default:
1818 (void) fprintf(stderr,
1819 gettext("invalid type '%s'\n"),
1820 value);
1821 usage(B_FALSE);
1822 }
1823 }
1824 break;
1825 case ':':
1826 (void) fprintf(stderr, gettext("missing argument for "
1827 "'%c' option\n"), optopt);
1828 usage(B_FALSE);
1829 break;
1830 case '?':
1831 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1832 optopt);
1833 usage(B_FALSE);
1834 }
1835 }
1836
1837 argc -= optind;
1838 argv += optind;
1839
1840 if (fields == NULL)
1841 fields = default_fields;
1842
1843 /*
1844 * If "-o space" and no types were specified, don't display snapshots.
1845 */
1846 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
1847 types &= ~ZFS_TYPE_SNAPSHOT;
1848
1849 /*
1850 * If the user specifies '-o all', the zprop_get_list() doesn't
1851 * normally include the name of the dataset. For 'zfs list', we always
1852 * want this property to be first.
1853 */
1854 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1855 != 0)
1856 usage(B_FALSE);
1857
1858 cb.cb_scripted = scripted;
1859 cb.cb_first = B_TRUE;
1860
1861 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
1862 list_callback, &cb);
1863
1864 zprop_free_list(cb.cb_proplist);
1865 zfs_free_sort_columns(sortcol);
1866
1867 if (ret == 0 && cb.cb_first && !cb.cb_scripted)
1868 (void) printf(gettext("no datasets available\n"));
1869
1870 return (ret);
1871 }
1872
1873 /*
1874 * zfs rename <fs | snap | vol> <fs | snap | vol>
1875 * zfs rename -p <fs | vol> <fs | vol>
1876 * zfs rename -r <snap> <snap>
1877 *
1878 * Renames the given dataset to another of the same type.
1879 *
1880 * The '-p' flag creates all the non-existing ancestors of the target first.
1881 */
1882 /* ARGSUSED */
1883 static int
1884 zfs_do_rename(int argc, char **argv)
1885 {
1886 zfs_handle_t *zhp;
1887 int c;
1888 int ret;
1889 boolean_t recurse = B_FALSE;
1890 boolean_t parents = B_FALSE;
1891
1892 /* check options */
1893 while ((c = getopt(argc, argv, "pr")) != -1) {
1894 switch (c) {
1895 case 'p':
1896 parents = B_TRUE;
1897 break;
1898 case 'r':
1899 recurse = B_TRUE;
1900 break;
1901 case '?':
1902 default:
1903 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1904 optopt);
1905 usage(B_FALSE);
1906 }
1907 }
1908
1909 argc -= optind;
1910 argv += optind;
1911
1912 /* check number of arguments */
1913 if (argc < 1) {
1914 (void) fprintf(stderr, gettext("missing source dataset "
1915 "argument\n"));
1916 usage(B_FALSE);
1917 }
1918 if (argc < 2) {
1919 (void) fprintf(stderr, gettext("missing target dataset "
1920 "argument\n"));
1921 usage(B_FALSE);
1922 }
1923 if (argc > 2) {
1924 (void) fprintf(stderr, gettext("too many arguments\n"));
1925 usage(B_FALSE);
1926 }
1927
1928 if (recurse && parents) {
1929 (void) fprintf(stderr, gettext("-p and -r options are mutually "
1930 "exclusive\n"));
1931 usage(B_FALSE);
1932 }
1933
1934 if (recurse && strchr(argv[0], '@') == 0) {
1935 (void) fprintf(stderr, gettext("source dataset for recursive "
1936 "rename must be a snapshot\n"));
1937 usage(B_FALSE);
1938 }
1939
1940 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM |
1941 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL)
1942 return (1);
1943
1944 /* If we were asked and the name looks good, try to create ancestors. */
1945 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
1946 zfs_create_ancestors(g_zfs, argv[1]) != 0) {
1947 zfs_close(zhp);
1948 return (1);
1949 }
1950
1951 ret = (zfs_rename(zhp, argv[1], recurse) != 0);
1952
1953 zfs_close(zhp);
1954 return (ret);
1955 }
1956
1957 /*
1958 * zfs promote <fs>
1959 *
1960 * Promotes the given clone fs to be the parent
1961 */
1962 /* ARGSUSED */
1963 static int
1964 zfs_do_promote(int argc, char **argv)
1965 {
1966 zfs_handle_t *zhp;
1967 int ret;
1968
1969 /* check options */
1970 if (argc > 1 && argv[1][0] == '-') {
1971 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1972 argv[1][1]);
1973 usage(B_FALSE);
1974 }
1975
1976 /* check number of arguments */
1977 if (argc < 2) {
1978 (void) fprintf(stderr, gettext("missing clone filesystem"
1979 " argument\n"));
1980 usage(B_FALSE);
1981 }
1982 if (argc > 2) {
1983 (void) fprintf(stderr, gettext("too many arguments\n"));
1984 usage(B_FALSE);
1985 }
1986
1987 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1988 if (zhp == NULL)
1989 return (1);
1990
1991 ret = (zfs_promote(zhp) != 0);
1992
1993
1994 zfs_close(zhp);
1995 return (ret);
1996 }
1997
1998 /*
1999 * zfs rollback [-rRf] <snapshot>
2000 *
2001 * -r Delete any intervening snapshots before doing rollback
2002 * -R Delete any snapshots and their clones
2003 * -f ignored for backwards compatability
2004 *
2005 * Given a filesystem, rollback to a specific snapshot, discarding any changes
2006 * since then and making it the active dataset. If more recent snapshots exist,
2007 * the command will complain unless the '-r' flag is given.
2008 */
2009 typedef struct rollback_cbdata {
2010 uint64_t cb_create;
2011 boolean_t cb_first;
2012 int cb_doclones;
2013 char *cb_target;
2014 int cb_error;
2015 boolean_t cb_recurse;
2016 boolean_t cb_dependent;
2017 } rollback_cbdata_t;
2018
2019 /*
2020 * Report any snapshots more recent than the one specified. Used when '-r' is
2021 * not specified. We reuse this same callback for the snapshot dependents - if
2022 * 'cb_dependent' is set, then this is a dependent and we should report it
2023 * without checking the transaction group.
2024 */
2025 static int
2026 rollback_check(zfs_handle_t *zhp, void *data)
2027 {
2028 rollback_cbdata_t *cbp = data;
2029
2030 if (cbp->cb_doclones) {
2031 zfs_close(zhp);
2032 return (0);
2033 }
2034
2035 if (!cbp->cb_dependent) {
2036 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 &&
2037 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT &&
2038 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) >
2039 cbp->cb_create) {
2040
2041 if (cbp->cb_first && !cbp->cb_recurse) {
2042 (void) fprintf(stderr, gettext("cannot "
2043 "rollback to '%s': more recent snapshots "
2044 "exist\n"),
2045 cbp->cb_target);
2046 (void) fprintf(stderr, gettext("use '-r' to "
2047 "force deletion of the following "
2048 "snapshots:\n"));
2049 cbp->cb_first = 0;
2050 cbp->cb_error = 1;
2051 }
2052
2053 if (cbp->cb_recurse) {
2054 cbp->cb_dependent = B_TRUE;
2055 if (zfs_iter_dependents(zhp, B_TRUE,
2056 rollback_check, cbp) != 0) {
2057 zfs_close(zhp);
2058 return (-1);
2059 }
2060 cbp->cb_dependent = B_FALSE;
2061 } else {
2062 (void) fprintf(stderr, "%s\n",
2063 zfs_get_name(zhp));
2064 }
2065 }
2066 } else {
2067 if (cbp->cb_first && cbp->cb_recurse) {
2068 (void) fprintf(stderr, gettext("cannot rollback to "
2069 "'%s': clones of previous snapshots exist\n"),
2070 cbp->cb_target);
2071 (void) fprintf(stderr, gettext("use '-R' to "
2072 "force deletion of the following clones and "
2073 "dependents:\n"));
2074 cbp->cb_first = 0;
2075 cbp->cb_error = 1;
2076 }
2077
2078 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
2079 }
2080
2081 zfs_close(zhp);
2082 return (0);
2083 }
2084
2085 static int
2086 zfs_do_rollback(int argc, char **argv)
2087 {
2088 int ret;
2089 int c;
2090 boolean_t force = B_FALSE;
2091 rollback_cbdata_t cb = { 0 };
2092 zfs_handle_t *zhp, *snap;
2093 char parentname[ZFS_MAXNAMELEN];
2094 char *delim;
2095
2096 /* check options */
2097 while ((c = getopt(argc, argv, "rRf")) != -1) {
2098 switch (c) {
2099 case 'r':
2100 cb.cb_recurse = 1;
2101 break;
2102 case 'R':
2103 cb.cb_recurse = 1;
2104 cb.cb_doclones = 1;
2105 break;
2106 case 'f':
2107 force = B_TRUE;
2108 break;
2109 case '?':
2110 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2111 optopt);
2112 usage(B_FALSE);
2113 }
2114 }
2115
2116 argc -= optind;
2117 argv += optind;
2118
2119 /* check number of arguments */
2120 if (argc < 1) {
2121 (void) fprintf(stderr, gettext("missing dataset argument\n"));
2122 usage(B_FALSE);
2123 }
2124 if (argc > 1) {
2125 (void) fprintf(stderr, gettext("too many arguments\n"));
2126 usage(B_FALSE);
2127 }
2128
2129 /* open the snapshot */
2130 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
2131 return (1);
2132
2133 /* open the parent dataset */
2134 (void) strlcpy(parentname, argv[0], sizeof (parentname));
2135 verify((delim = strrchr(parentname, '@')) != NULL);
2136 *delim = '\0';
2137 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
2138 zfs_close(snap);
2139 return (1);
2140 }
2141
2142 /*
2143 * Check for more recent snapshots and/or clones based on the presence
2144 * of '-r' and '-R'.
2145 */
2146 cb.cb_target = argv[0];
2147 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
2148 cb.cb_first = B_TRUE;
2149 cb.cb_error = 0;
2150 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0)
2151 goto out;
2152
2153 if ((ret = cb.cb_error) != 0)
2154 goto out;
2155
2156 /*
2157 * Rollback parent to the given snapshot.
2158 */
2159 ret = zfs_rollback(zhp, snap, force);
2160
2161 out:
2162 zfs_close(snap);
2163 zfs_close(zhp);
2164
2165 if (ret == 0)
2166 return (0);
2167 else
2168 return (1);
2169 }
2170
2171 /*
2172 * zfs set property=value { fs | snap | vol } ...
2173 *
2174 * Sets the given property for all datasets specified on the command line.
2175 */
2176 typedef struct set_cbdata {
2177 char *cb_propname;
2178 char *cb_value;
2179 } set_cbdata_t;
2180
2181 static int
2182 set_callback(zfs_handle_t *zhp, void *data)
2183 {
2184 set_cbdata_t *cbp = data;
2185
2186 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) {
2187 switch (libzfs_errno(g_zfs)) {
2188 case EZFS_MOUNTFAILED:
2189 (void) fprintf(stderr, gettext("property may be set "
2190 "but unable to remount filesystem\n"));
2191 break;
2192 case EZFS_SHARENFSFAILED:
2193 (void) fprintf(stderr, gettext("property may be set "
2194 "but unable to reshare filesystem\n"));
2195 break;
2196 }
2197 return (1);
2198 }
2199 return (0);
2200 }
2201
2202 static int
2203 zfs_do_set(int argc, char **argv)
2204 {
2205 set_cbdata_t cb;
2206 int ret;
2207
2208 /* check for options */
2209 if (argc > 1 && argv[1][0] == '-') {
2210 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2211 argv[1][1]);
2212 usage(B_FALSE);
2213 }
2214
2215 /* check number of arguments */
2216 if (argc < 2) {
2217 (void) fprintf(stderr, gettext("missing property=value "
2218 "argument\n"));
2219 usage(B_FALSE);
2220 }
2221 if (argc < 3) {
2222 (void) fprintf(stderr, gettext("missing dataset name\n"));
2223 usage(B_FALSE);
2224 }
2225
2226 /* validate property=value argument */
2227 cb.cb_propname = argv[1];
2228 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) ||
2229 (cb.cb_value[1] == '\0')) {
2230 (void) fprintf(stderr, gettext("missing value in "
2231 "property=value argument\n"));
2232 usage(B_FALSE);
2233 }
2234
2235 *cb.cb_value = '\0';
2236 cb.cb_value++;
2237
2238 if (*cb.cb_propname == '\0') {
2239 (void) fprintf(stderr,
2240 gettext("missing property in property=value argument\n"));
2241 usage(B_FALSE);
2242 }
2243
2244 ret = zfs_for_each(argc - 2, argv + 2, NULL,
2245 ZFS_TYPE_DATASET, NULL, NULL, set_callback, &cb);
2246
2247 return (ret);
2248 }
2249
2250 /*
2251 * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
2252 *
2253 * Creates a snapshot with the given name. While functionally equivalent to
2254 * 'zfs create', it is a separate command to differentiate intent.
2255 */
2256 static int
2257 zfs_do_snapshot(int argc, char **argv)
2258 {
2259 boolean_t recursive = B_FALSE;
2260 int ret;
2261 char c;
2262 nvlist_t *props;
2263
2264 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
2265 (void) fprintf(stderr, gettext("internal error: "
2266 "out of memory\n"));
2267 return (1);
2268 }
2269
2270 /* check options */
2271 while ((c = getopt(argc, argv, "ro:")) != -1) {
2272 switch (c) {
2273 case 'o':
2274 if (parseprop(props))
2275 return (1);
2276 break;
2277 case 'r':
2278 recursive = B_TRUE;
2279 break;
2280 case '?':
2281 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2282 optopt);
2283 goto usage;
2284 }
2285 }
2286
2287 argc -= optind;
2288 argv += optind;
2289
2290 /* check number of arguments */
2291 if (argc < 1) {
2292 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
2293 goto usage;
2294 }
2295 if (argc > 1) {
2296 (void) fprintf(stderr, gettext("too many arguments\n"));
2297 goto usage;
2298 }
2299
2300 ret = zfs_snapshot(g_zfs, argv[0], recursive, props);
2301 nvlist_free(props);
2302 if (ret && recursive)
2303 (void) fprintf(stderr, gettext("no snapshots were created\n"));
2304 return (ret != 0);
2305
2306 usage:
2307 nvlist_free(props);
2308 usage(B_FALSE);
2309 return (-1);
2310 }
2311
2312 /*
2313 * zfs send [-v] -R [-i|-I <@snap>] <fs@snap>
2314 * zfs send [-v] [-i|-I <@snap>] <fs@snap>
2315 *
2316 * Send a backup stream to stdout.
2317 */
2318 static int
2319 zfs_do_send(int argc, char **argv)
2320 {
2321 char *fromname = NULL;
2322 char *toname = NULL;
2323 char *cp;
2324 zfs_handle_t *zhp;
2325 boolean_t doall = B_FALSE;
2326 boolean_t replicate = B_FALSE;
2327 boolean_t fromorigin = B_FALSE;
2328 boolean_t verbose = B_FALSE;
2329 int c, err;
2330
2331 /* check options */
2332 while ((c = getopt(argc, argv, ":i:I:Rv")) != -1) {
2333 switch (c) {
2334 case 'i':
2335 if (fromname)
2336 usage(B_FALSE);
2337 fromname = optarg;
2338 break;
2339 case 'I':
2340 if (fromname)
2341 usage(B_FALSE);
2342 fromname = optarg;
2343 doall = B_TRUE;
2344 break;
2345 case 'R':
2346 replicate = B_TRUE;
2347 break;
2348 case 'v':
2349 verbose = B_TRUE;
2350 break;
2351 case ':':
2352 (void) fprintf(stderr, gettext("missing argument for "
2353 "'%c' option\n"), optopt);
2354 usage(B_FALSE);
2355 break;
2356 case '?':
2357 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2358 optopt);
2359 usage(B_FALSE);
2360 }
2361 }
2362
2363 argc -= optind;
2364 argv += optind;
2365
2366 /* check number of arguments */
2367 if (argc < 1) {
2368 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
2369 usage(B_FALSE);
2370 }
2371 if (argc > 1) {
2372 (void) fprintf(stderr, gettext("too many arguments\n"));
2373 usage(B_FALSE);
2374 }
2375
2376 if (isatty(STDOUT_FILENO)) {
2377 (void) fprintf(stderr,
2378 gettext("Error: Stream can not be written to a terminal.\n"
2379 "You must redirect standard output.\n"));
2380 return (1);
2381 }
2382
2383 cp = strchr(argv[0], '@');
2384 if (cp == NULL) {
2385 (void) fprintf(stderr,
2386 gettext("argument must be a snapshot\n"));
2387 usage(B_FALSE);
2388 }
2389 *cp = '\0';
2390 toname = cp + 1;
2391 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
2392 if (zhp == NULL)
2393 return (1);
2394
2395 /*
2396 * If they specified the full path to the snapshot, chop off
2397 * everything except the short name of the snapshot, but special
2398 * case if they specify the origin.
2399 */
2400 if (fromname && (cp = strchr(fromname, '@')) != NULL) {
2401 char origin[ZFS_MAXNAMELEN];
2402 zprop_source_t src;
2403
2404 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
2405 origin, sizeof (origin), &src, NULL, 0, B_FALSE);
2406
2407 if (strcmp(origin, fromname) == 0) {
2408 fromname = NULL;
2409 fromorigin = B_TRUE;
2410 } else {
2411 *cp = '\0';
2412 if (cp != fromname && strcmp(argv[0], fromname)) {
2413 (void) fprintf(stderr,
2414 gettext("incremental source must be "
2415 "in same filesystem\n"));
2416 usage(B_FALSE);
2417 }
2418 fromname = cp + 1;
2419 if (strchr(fromname, '@') || strchr(fromname, '/')) {
2420 (void) fprintf(stderr,
2421 gettext("invalid incremental source\n"));
2422 usage(B_FALSE);
2423 }
2424 }
2425 }
2426
2427 if (replicate && fromname == NULL)
2428 doall = B_TRUE;
2429
2430 err = zfs_send(zhp, fromname, toname, replicate, doall, fromorigin,
2431 verbose, STDOUT_FILENO);
2432 zfs_close(zhp);
2433
2434 return (err != 0);
2435 }
2436
2437 /*
2438 * zfs receive [-dnvF] <fs@snap>
2439 *
2440 * Restore a backup stream from stdin.
2441 */
2442 static int
2443 zfs_do_receive(int argc, char **argv)
2444 {
2445 int c, err;
2446 recvflags_t flags;
2447
2448 bzero(&flags, sizeof (recvflags_t));
2449 /* check options */
2450 while ((c = getopt(argc, argv, ":dnvF")) != -1) {
2451 switch (c) {
2452 case 'd':
2453 flags.isprefix = B_TRUE;
2454 break;
2455 case 'n':
2456 flags.dryrun = B_TRUE;
2457 break;
2458 case 'v':
2459 flags.verbose = B_TRUE;
2460 break;
2461 case 'F':
2462 flags.force = B_TRUE;
2463 break;
2464 case ':':
2465 (void) fprintf(stderr, gettext("missing argument for "
2466 "'%c' option\n"), optopt);
2467 usage(B_FALSE);
2468 break;
2469 case '?':
2470 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2471 optopt);
2472 usage(B_FALSE);
2473 }
2474 }
2475
2476 argc -= optind;
2477 argv += optind;
2478
2479 /* check number of arguments */
2480 if (argc < 1) {
2481 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
2482 usage(B_FALSE);
2483 }
2484 if (argc > 1) {
2485 (void) fprintf(stderr, gettext("too many arguments\n"));
2486 usage(B_FALSE);
2487 }
2488
2489 if (isatty(STDIN_FILENO)) {
2490 (void) fprintf(stderr,
2491 gettext("Error: Backup stream can not be read "
2492 "from a terminal.\n"
2493 "You must redirect standard input.\n"));
2494 return (1);
2495 }
2496
2497 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL);
2498
2499 return (err != 0);
2500 }
2501
2502 typedef struct allow_cb {
2503 int a_permcnt;
2504 size_t a_treeoffset;
2505 } allow_cb_t;
2506
2507 static void
2508 zfs_print_perms(avl_tree_t *tree)
2509 {
2510 zfs_perm_node_t *permnode;
2511
2512 permnode = avl_first(tree);
2513 while (permnode != NULL) {
2514 (void) printf("%s", permnode->z_pname);
2515 permnode = AVL_NEXT(tree, permnode);
2516 if (permnode)
2517 (void) printf(",");
2518 else
2519 (void) printf("\n");
2520 }
2521 }
2522
2523 /*
2524 * Iterate over user/groups/everyone/... and the call perm_iter
2525 * function to print actual permission when tree has >0 nodes.
2526 */
2527 static void
2528 zfs_iter_perms(avl_tree_t *tree, const char *banner, allow_cb_t *cb)
2529 {
2530 zfs_allow_node_t *item;
2531 avl_tree_t *ptree;
2532
2533 item = avl_first(tree);
2534 while (item) {
2535 ptree = (void *)((char *)item + cb->a_treeoffset);
2536 if (avl_numnodes(ptree)) {
2537 if (cb->a_permcnt++ == 0)
2538 (void) printf("%s\n", banner);
2539 (void) printf("\t%s", item->z_key);
2540 /*
2541 * Avoid an extra space being printed
2542 * for "everyone" which is keyed with a null
2543 * string
2544 */
2545 if (item->z_key[0] != '\0')
2546 (void) printf(" ");
2547 zfs_print_perms(ptree);
2548 }
2549 item = AVL_NEXT(tree, item);
2550 }
2551 }
2552
2553 #define LINES "-------------------------------------------------------------\n"
2554 static int
2555 zfs_print_allows(char *ds)
2556 {
2557 zfs_allow_t *curperms, *perms;
2558 zfs_handle_t *zhp;
2559 allow_cb_t allowcb = { 0 };
2560 char banner[MAXPATHLEN];
2561
2562 if (ds[0] == '-')
2563 usage(B_FALSE);
2564
2565 if (strrchr(ds, '@')) {
2566 (void) fprintf(stderr, gettext("Snapshots don't have 'allow'"
2567 " permissions\n"));
2568 return (1);
2569 }
2570 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL)
2571 return (1);
2572
2573 if (zfs_perm_get(zhp, &perms)) {
2574 (void) fprintf(stderr,
2575 gettext("Failed to retrieve 'allows' on %s\n"), ds);
2576 zfs_close(zhp);
2577 return (1);
2578 }
2579
2580 zfs_close(zhp);
2581
2582 if (perms != NULL)
2583 (void) printf("%s", LINES);
2584 for (curperms = perms; curperms; curperms = curperms->z_next) {
2585
2586 (void) snprintf(banner, sizeof (banner),
2587 "Permission sets on (%s)", curperms->z_setpoint);
2588 allowcb.a_treeoffset =
2589 offsetof(zfs_allow_node_t, z_localdescend);
2590 allowcb.a_permcnt = 0;
2591 zfs_iter_perms(&curperms->z_sets, banner, &allowcb);
2592
2593 (void) snprintf(banner, sizeof (banner),
2594 "Create time permissions on (%s)", curperms->z_setpoint);
2595 allowcb.a_treeoffset =
2596 offsetof(zfs_allow_node_t, z_localdescend);
2597 allowcb.a_permcnt = 0;
2598 zfs_iter_perms(&curperms->z_crperms, banner, &allowcb);
2599
2600
2601 (void) snprintf(banner, sizeof (banner),
2602 "Local permissions on (%s)", curperms->z_setpoint);
2603 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_local);
2604 allowcb.a_permcnt = 0;
2605 zfs_iter_perms(&curperms->z_user, banner, &allowcb);
2606 zfs_iter_perms(&curperms->z_group, banner, &allowcb);
2607 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb);
2608
2609 (void) snprintf(banner, sizeof (banner),
2610 "Descendent permissions on (%s)", curperms->z_setpoint);
2611 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_descend);
2612 allowcb.a_permcnt = 0;
2613 zfs_iter_perms(&curperms->z_user, banner, &allowcb);
2614 zfs_iter_perms(&curperms->z_group, banner, &allowcb);
2615 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb);
2616
2617 (void) snprintf(banner, sizeof (banner),
2618 "Local+Descendent permissions on (%s)",
2619 curperms->z_setpoint);
2620 allowcb.a_treeoffset =
2621 offsetof(zfs_allow_node_t, z_localdescend);
2622 allowcb.a_permcnt = 0;
2623 zfs_iter_perms(&curperms->z_user, banner, &allowcb);
2624 zfs_iter_perms(&curperms->z_group, banner, &allowcb);
2625 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb);
2626
2627 (void) printf("%s", LINES);
2628 }
2629 zfs_free_allows(perms);
2630 return (0);
2631 }
2632
2633 #define ALLOWOPTIONS "ldcsu:g:e"
2634 #define UNALLOWOPTIONS "ldcsu:g:er"
2635
2636 /*
2637 * Validate options, and build necessary datastructure to display/remove/add
2638 * permissions.
2639 * Returns 0 - If permissions should be added/removed
2640 * Returns 1 - If permissions should be displayed.
2641 * Returns -1 - on failure
2642 */
2643 int
2644 parse_allow_args(int *argc, char **argv[], boolean_t unallow,
2645 char **ds, int *recurse, nvlist_t **zperms)
2646 {
2647 int c;
2648 char *options = unallow ? UNALLOWOPTIONS : ALLOWOPTIONS;
2649 zfs_deleg_inherit_t deleg_type = ZFS_DELEG_NONE;
2650 zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN;
2651 char *who = NULL;
2652 char *perms = NULL;
2653 zfs_handle_t *zhp;
2654
2655 while ((c = getopt(*argc, *argv, options)) != -1) {
2656 switch (c) {
2657 case 'l':
2658 if (who_type == ZFS_DELEG_CREATE ||
2659 who_type == ZFS_DELEG_NAMED_SET)
2660 usage(B_FALSE);
2661
2662 deleg_type |= ZFS_DELEG_PERM_LOCAL;
2663 break;
2664 case 'd':
2665 if (who_type == ZFS_DELEG_CREATE ||
2666 who_type == ZFS_DELEG_NAMED_SET)
2667 usage(B_FALSE);
2668
2669 deleg_type |= ZFS_DELEG_PERM_DESCENDENT;
2670 break;
2671 case 'r':
2672 *recurse = B_TRUE;
2673 break;
2674 case 'c':
2675 if (who_type != ZFS_DELEG_WHO_UNKNOWN)
2676 usage(B_FALSE);
2677 if (deleg_type)
2678 usage(B_FALSE);
2679 who_type = ZFS_DELEG_CREATE;
2680 break;
2681 case 's':
2682 if (who_type != ZFS_DELEG_WHO_UNKNOWN)
2683 usage(B_FALSE);
2684 if (deleg_type)
2685 usage(B_FALSE);
2686 who_type = ZFS_DELEG_NAMED_SET;
2687 break;
2688 case 'u':
2689 if (who_type != ZFS_DELEG_WHO_UNKNOWN)
2690 usage(B_FALSE);
2691 who_type = ZFS_DELEG_USER;
2692 who = optarg;
2693 break;
2694 case 'g':
2695 if (who_type != ZFS_DELEG_WHO_UNKNOWN)
2696 usage(B_FALSE);
2697 who_type = ZFS_DELEG_GROUP;
2698 who = optarg;
2699 break;
2700 case 'e':
2701 if (who_type != ZFS_DELEG_WHO_UNKNOWN)
2702 usage(B_FALSE);
2703 who_type = ZFS_DELEG_EVERYONE;
2704 break;
2705 default:
2706 usage(B_FALSE);
2707 break;
2708 }
2709 }
2710
2711 if (deleg_type == 0)
2712 deleg_type = ZFS_DELEG_PERM_LOCALDESCENDENT;
2713
2714 *argc -= optind;
2715 *argv += optind;
2716
2717 if (unallow == B_FALSE && *argc == 1) {
2718 /*
2719 * Only print permissions if no options were processed
2720 */
2721 if (optind == 1)
2722 return (1);
2723 else
2724 usage(B_FALSE);
2725 }
2726
2727 /*
2728 * initialize variables for zfs_build_perms based on number
2729 * of arguments.
2730 * 3 arguments ==> zfs [un]allow joe perm,perm,perm <dataset> or
2731 * zfs [un]allow -s @set1 perm,perm <dataset>
2732 * 2 arguments ==> zfs [un]allow -c perm,perm <dataset> or
2733 * zfs [un]allow -u|-g <name> perm <dataset> or
2734 * zfs [un]allow -e perm,perm <dataset>
2735 * zfs unallow joe <dataset>
2736 * zfs unallow -s @set1 <dataset>
2737 * 1 argument ==> zfs [un]allow -e <dataset> or
2738 * zfs [un]allow -c <dataset>
2739 */
2740
2741 switch (*argc) {
2742 case 3:
2743 perms = (*argv)[1];
2744 who = (*argv)[0];
2745 *ds = (*argv)[2];
2746
2747 /*
2748 * advance argc/argv for do_allow cases.
2749 * for do_allow case make sure who have a know who type
2750 * and its not a permission set.
2751 */
2752 if (unallow == B_TRUE) {
2753 *argc -= 2;
2754 *argv += 2;
2755 } else if (who_type != ZFS_DELEG_WHO_UNKNOWN &&
2756 who_type != ZFS_DELEG_NAMED_SET)
2757 usage(B_FALSE);
2758 break;
2759
2760 case 2:
2761 if (unallow == B_TRUE && (who_type == ZFS_DELEG_EVERYONE ||
2762 who_type == ZFS_DELEG_CREATE || who != NULL)) {
2763 perms = (*argv)[0];
2764 *ds = (*argv)[1];
2765 } else {
2766 if (unallow == B_FALSE &&
2767 (who_type == ZFS_DELEG_WHO_UNKNOWN ||
2768 who_type == ZFS_DELEG_NAMED_SET))
2769 usage(B_FALSE);
2770 else if (who_type == ZFS_DELEG_WHO_UNKNOWN ||
2771 who_type == ZFS_DELEG_NAMED_SET)
2772 who = (*argv)[0];
2773 else if (who_type != ZFS_DELEG_NAMED_SET)
2774 perms = (*argv)[0];
2775 *ds = (*argv)[1];
2776 }
2777 if (unallow == B_TRUE) {
2778 (*argc)--;
2779 (*argv)++;
2780 }
2781 break;
2782
2783 case 1:
2784 if (unallow == B_FALSE)
2785 usage(B_FALSE);
2786 if (who == NULL && who_type != ZFS_DELEG_CREATE &&
2787 who_type != ZFS_DELEG_EVERYONE)
2788 usage(B_FALSE);
2789 *ds = (*argv)[0];
2790 break;
2791
2792 default:
2793 usage(B_FALSE);
2794 }
2795
2796 if (strrchr(*ds, '@')) {
2797 (void) fprintf(stderr,
2798 gettext("Can't set or remove 'allow' permissions "
2799 "on snapshots.\n"));
2800 return (-1);
2801 }
2802
2803 if ((zhp = zfs_open(g_zfs, *ds, ZFS_TYPE_DATASET)) == NULL)
2804 return (-1);
2805
2806 if ((zfs_build_perms(zhp, who, perms,
2807 who_type, deleg_type, zperms)) != 0) {
2808 zfs_close(zhp);
2809 return (-1);
2810 }
2811 zfs_close(zhp);
2812 return (0);
2813 }
2814
2815 static int
2816 zfs_do_allow(int argc, char **argv)
2817 {
2818 char *ds;
2819 nvlist_t *zperms = NULL;
2820 zfs_handle_t *zhp;
2821 int unused;
2822 int ret;
2823
2824 if ((ret = parse_allow_args(&argc, &argv, B_FALSE, &ds,
2825 &unused, &zperms)) == -1)
2826 return (1);
2827
2828 if (ret == 1)
2829 return (zfs_print_allows(argv[0]));
2830
2831 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL)
2832 return (1);
2833
2834 if (zfs_perm_set(zhp, zperms)) {
2835 zfs_close(zhp);
2836 nvlist_free(zperms);
2837 return (1);
2838 }
2839 nvlist_free(zperms);
2840 zfs_close(zhp);
2841
2842 return (0);
2843 }
2844
2845 static int
2846 unallow_callback(zfs_handle_t *zhp, void *data)
2847 {
2848 nvlist_t *nvp = (nvlist_t *)data;
2849 int error;
2850
2851 error = zfs_perm_remove(zhp, nvp);
2852 if (error) {
2853 (void) fprintf(stderr, gettext("Failed to remove permissions "
2854 "on %s\n"), zfs_get_name(zhp));
2855 }
2856 return (error);
2857 }
2858
2859 static int
2860 zfs_do_unallow(int argc, char **argv)
2861 {
2862 int recurse = B_FALSE;
2863 char *ds;
2864 int error;
2865 nvlist_t *zperms = NULL;
2866 int flags = 0;
2867
2868 if (parse_allow_args(&argc, &argv, B_TRUE,
2869 &ds, &recurse, &zperms) == -1)
2870 return (1);
2871
2872 if (recurse)
2873 flags |= ZFS_ITER_RECURSE;
2874 error = zfs_for_each(argc, argv, flags,
2875 ZFS_TYPE_FILESYSTEM|ZFS_TYPE_VOLUME, NULL,
2876 NULL, unallow_callback, (void *)zperms);
2877
2878 if (zperms)
2879 nvlist_free(zperms);
2880
2881 return (error);
2882 }
2883
2884 typedef struct get_all_cbdata {
2885 zfs_handle_t **cb_handles;
2886 size_t cb_alloc;
2887 size_t cb_used;
2888 uint_t cb_types;
2889 boolean_t cb_verbose;
2890 } get_all_cbdata_t;
2891
2892 #define CHECK_SPINNER 30
2893 #define SPINNER_TIME 3 /* seconds */
2894 #define MOUNT_TIME 5 /* seconds */
2895
2896 static int
2897 get_one_dataset(zfs_handle_t *zhp, void *data)
2898 {
2899 static char spin[] = { '-', '\\', '|', '/' };
2900 static int spinval = 0;
2901 static int spincheck = 0;
2902 static time_t last_spin_time = (time_t)0;
2903 get_all_cbdata_t *cbp = data;
2904 zfs_type_t type = zfs_get_type(zhp);
2905
2906 if (cbp->cb_verbose) {
2907 if (--spincheck < 0) {
2908 time_t now = time(NULL);
2909 if (last_spin_time + SPINNER_TIME < now) {
2910 (void) printf("\b%c", spin[spinval++ % 4]);
2911 (void) fflush(stdout);
2912 last_spin_time = now;
2913 }
2914 spincheck = CHECK_SPINNER;
2915 }
2916 }
2917
2918 /*
2919 * Interate over any nested datasets.
2920 */
2921 if (type == ZFS_TYPE_FILESYSTEM &&
2922 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
2923 zfs_close(zhp);
2924 return (1);
2925 }
2926
2927 /*
2928 * Skip any datasets whose type does not match.
2929 */
2930 if ((type & cbp->cb_types) == 0) {
2931 zfs_close(zhp);
2932 return (0);
2933 }
2934
2935 if (cbp->cb_alloc == cbp->cb_used) {
2936 zfs_handle_t **handles;
2937
2938 if (cbp->cb_alloc == 0)
2939 cbp->cb_alloc = 64;
2940 else
2941 cbp->cb_alloc *= 2;
2942
2943 handles = safe_malloc(cbp->cb_alloc * sizeof (void *));
2944
2945 if (cbp->cb_handles) {
2946 bcopy(cbp->cb_handles, handles,
2947 cbp->cb_used * sizeof (void *));
2948 free(cbp->cb_handles);
2949 }
2950
2951 cbp->cb_handles = handles;
2952 }
2953
2954 cbp->cb_handles[cbp->cb_used++] = zhp;
2955
2956 return (0);
2957 }
2958
2959 static void
2960 get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count,
2961 boolean_t verbose)
2962 {
2963 get_all_cbdata_t cb = { 0 };
2964 cb.cb_types = types;
2965 cb.cb_verbose = verbose;
2966
2967 if (verbose) {
2968 (void) printf("%s: *", gettext("Reading ZFS config"));
2969 (void) fflush(stdout);
2970 }
2971
2972 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
2973
2974 *dslist = cb.cb_handles;
2975 *count = cb.cb_used;
2976
2977 if (verbose) {
2978 (void) printf("\b%s\n", gettext("done."));
2979 }
2980 }
2981
2982 static int
2983 dataset_cmp(const void *a, const void *b)
2984 {
2985 zfs_handle_t **za = (zfs_handle_t **)a;
2986 zfs_handle_t **zb = (zfs_handle_t **)b;
2987 char mounta[MAXPATHLEN];
2988 char mountb[MAXPATHLEN];
2989 boolean_t gota, gotb;
2990
2991 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0)
2992 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta,
2993 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0);
2994 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0)
2995 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb,
2996 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0);
2997
2998 if (gota && gotb)
2999 return (strcmp(mounta, mountb));
3000
3001 if (gota)
3002 return (-1);
3003 if (gotb)
3004 return (1);
3005
3006 return (strcmp(zfs_get_name(a), zfs_get_name(b)));
3007 }
3008
3009 /*
3010 * Generic callback for sharing or mounting filesystems. Because the code is so
3011 * similar, we have a common function with an extra parameter to determine which
3012 * mode we are using.
3013 */
3014 #define OP_SHARE 0x1
3015 #define OP_MOUNT 0x2
3016
3017 /*
3018 * Share or mount a dataset.
3019 */
3020 static int
3021 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
3022 boolean_t explicit, const char *options)
3023 {
3024 char mountpoint[ZFS_MAXPROPLEN];
3025 char shareopts[ZFS_MAXPROPLEN];
3026 char smbshareopts[ZFS_MAXPROPLEN];
3027 const char *cmdname = op == OP_SHARE ? "share" : "mount";
3028 struct mnttab mnt;
3029 uint64_t zoned, canmount;
3030 zfs_type_t type = zfs_get_type(zhp);
3031 boolean_t shared_nfs, shared_smb;
3032
3033 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME));
3034
3035 if (type == ZFS_TYPE_FILESYSTEM) {
3036 /*
3037 * Check to make sure we can mount/share this dataset. If we
3038 * are in the global zone and the filesystem is exported to a
3039 * local zone, or if we are in a local zone and the
3040 * filesystem is not exported, then it is an error.
3041 */
3042 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
3043
3044 if (zoned && getzoneid() == GLOBAL_ZONEID) {
3045 if (!explicit)
3046 return (0);
3047
3048 (void) fprintf(stderr, gettext("cannot %s '%s': "
3049 "dataset is exported to a local zone\n"), cmdname,
3050 zfs_get_name(zhp));
3051 return (1);
3052
3053 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
3054 if (!explicit)
3055 return (0);
3056
3057 (void) fprintf(stderr, gettext("cannot %s '%s': "
3058 "permission denied\n"), cmdname,
3059 zfs_get_name(zhp));
3060 return (1);
3061 }
3062
3063 /*
3064 * Ignore any filesystems which don't apply to us. This
3065 * includes those with a legacy mountpoint, or those with
3066 * legacy share options.
3067 */
3068 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
3069 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
3070 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
3071 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
3072 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
3073 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
3074 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
3075
3076 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
3077 strcmp(smbshareopts, "off") == 0) {
3078 if (!explicit)
3079 return (0);
3080
3081 (void) fprintf(stderr, gettext("cannot share '%s': "
3082 "legacy share\n"), zfs_get_name(zhp));
3083 (void) fprintf(stderr, gettext("use share(1M) to "
3084 "share this filesystem\n"));
3085 return (1);
3086 }
3087
3088 /*
3089 * We cannot share or mount legacy filesystems. If the
3090 * shareopts is non-legacy but the mountpoint is legacy, we
3091 * treat it as a legacy share.
3092 */
3093 if (strcmp(mountpoint, "legacy") == 0) {
3094 if (!explicit)
3095 return (0);
3096
3097 (void) fprintf(stderr, gettext("cannot %s '%s': "
3098 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
3099 (void) fprintf(stderr, gettext("use %s(1M) to "
3100 "%s this filesystem\n"), cmdname, cmdname);
3101 return (1);
3102 }
3103
3104 if (strcmp(mountpoint, "none") == 0) {
3105 if (!explicit)
3106 return (0);
3107
3108 (void) fprintf(stderr, gettext("cannot %s '%s': no "
3109 "mountpoint set\n"), cmdname, zfs_get_name(zhp));
3110 return (1);
3111 }
3112
3113 /*
3114 * canmount explicit outcome
3115 * on no pass through
3116 * on yes pass through
3117 * off no return 0
3118 * off yes display error, return 1
3119 * noauto no return 0
3120 * noauto yes pass through
3121 */
3122 if (canmount == ZFS_CANMOUNT_OFF) {
3123 if (!explicit)
3124 return (0);
3125
3126 (void) fprintf(stderr, gettext("cannot %s '%s': "
3127 "'canmount' property is set to 'off'\n"), cmdname,
3128 zfs_get_name(zhp));
3129 return (1);
3130 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
3131 return (0);
3132 }
3133
3134 /*
3135 * At this point, we have verified that the mountpoint and/or
3136 * shareopts are appropriate for auto management. If the
3137 * filesystem is already mounted or shared, return (failing
3138 * for explicit requests); otherwise mount or share the
3139 * filesystem.
3140 */
3141 switch (op) {
3142 case OP_SHARE:
3143
3144 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
3145 shared_smb = zfs_is_shared_smb(zhp, NULL);
3146
3147 if (shared_nfs && shared_smb ||
3148 (shared_nfs && strcmp(shareopts, "on") == 0 &&
3149 strcmp(smbshareopts, "off") == 0) ||
3150 (shared_smb && strcmp(smbshareopts, "on") == 0 &&
3151 strcmp(shareopts, "off") == 0)) {
3152 if (!explicit)
3153 return (0);
3154
3155 (void) fprintf(stderr, gettext("cannot share "
3156 "'%s': filesystem already shared\n"),
3157 zfs_get_name(zhp));
3158 return (1);
3159 }
3160
3161 if (!zfs_is_mounted(zhp, NULL) &&
3162 zfs_mount(zhp, NULL, 0) != 0)
3163 return (1);
3164
3165 if (protocol == NULL) {
3166 if (zfs_shareall(zhp) != 0)
3167 return (1);
3168 } else if (strcmp(protocol, "nfs") == 0) {
3169 if (zfs_share_nfs(zhp))
3170 return (1);
3171 } else if (strcmp(protocol, "smb") == 0) {
3172 if (zfs_share_smb(zhp))
3173 return (1);
3174 } else {
3175 (void) fprintf(stderr, gettext("cannot share "
3176 "'%s': invalid share type '%s' "
3177 "specified\n"),
3178 zfs_get_name(zhp), protocol);
3179 return (1);
3180 }
3181
3182 break;
3183
3184 case OP_MOUNT:
3185 if (options == NULL)
3186 mnt.mnt_mntopts = "";
3187 else
3188 mnt.mnt_mntopts = (char *)options;
3189
3190 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
3191 zfs_is_mounted(zhp, NULL)) {
3192 if (!explicit)
3193 return (0);
3194
3195 (void) fprintf(stderr, gettext("cannot mount "
3196 "'%s': filesystem already mounted\n"),
3197 zfs_get_name(zhp));
3198 return (1);
3199 }
3200
3201 if (zfs_mount(zhp, options, flags) != 0)
3202 return (1);
3203 break;
3204 }
3205 } else {
3206 assert(op == OP_SHARE);
3207
3208 /*
3209 * Ignore any volumes that aren't shared.
3210 */
3211 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts,
3212 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
3213
3214 if (strcmp(shareopts, "off") == 0) {
3215 if (!explicit)
3216 return (0);
3217
3218 (void) fprintf(stderr, gettext("cannot share '%s': "
3219 "'shareiscsi' property not set\n"),
3220 zfs_get_name(zhp));
3221 (void) fprintf(stderr, gettext("set 'shareiscsi' "
3222 "property or use iscsitadm(1M) to share this "
3223 "volume\n"));
3224 return (1);
3225 }
3226
3227 if (zfs_is_shared_iscsi(zhp)) {
3228 if (!explicit)
3229 return (0);
3230
3231 (void) fprintf(stderr, gettext("cannot share "
3232 "'%s': volume already shared\n"),
3233 zfs_get_name(zhp));
3234 return (1);
3235 }
3236
3237 if (zfs_share_iscsi(zhp) != 0)
3238 return (1);
3239 }
3240
3241 return (0);
3242 }
3243
3244 /*
3245 * Reports progress in the form "(current/total)". Not thread-safe.
3246 */
3247 static void
3248 report_mount_progress(int current, int total)
3249 {
3250 static int len;
3251 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"
3252 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b";
3253 static time_t last_progress_time;
3254 time_t now = time(NULL);
3255
3256 /* report 1..n instead of 0..n-1 */
3257 ++current;
3258
3259 /* display header if we're here for the first time */
3260 if (current == 1) {
3261 (void) printf(gettext("Mounting ZFS filesystems: "));
3262 len = 0;
3263 } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
3264 /* too soon to report again */
3265 return;
3266 }
3267
3268 last_progress_time = now;
3269
3270 /* back up to prepare for overwriting */
3271 if (len)
3272 (void) printf("%*.*s", len, len, reverse);
3273
3274 /* We put a newline at the end if this is the last one. */
3275 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : "");
3276 (void) fflush(stdout);
3277 }
3278
3279 static void
3280 append_options(char *mntopts, char *newopts)
3281 {
3282 int len = strlen(mntopts);
3283
3284 /* original length plus new string to append plus 1 for the comma */
3285 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
3286 (void) fprintf(stderr, gettext("the opts argument for "
3287 "'%c' option is too long (more than %d chars)\n"),
3288 "-o", MNT_LINE_MAX);
3289 usage(B_FALSE);
3290 }
3291
3292 if (*mntopts)
3293 mntopts[len++] = ',';
3294
3295 (void) strcpy(&mntopts[len], newopts);
3296 }
3297
3298 static int
3299 share_mount(int op, int argc, char **argv)
3300 {
3301 int do_all = 0;
3302 boolean_t verbose = B_FALSE;
3303 int c, ret = 0;
3304 char *options = NULL;
3305 int types, flags = 0;
3306
3307 /* check options */
3308 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
3309 != -1) {
3310 switch (c) {
3311 case 'a':
3312 do_all = 1;
3313 break;
3314 case 'v':
3315 verbose = B_TRUE;
3316 break;
3317 case 'o':
3318 if (*optarg == '\0') {
3319 (void) fprintf(stderr, gettext("empty mount "
3320 "options (-o) specified\n"));
3321 usage(B_FALSE);
3322 }
3323
3324 if (options == NULL)
3325 options = safe_malloc(MNT_LINE_MAX + 1);
3326
3327 /* option validation is done later */
3328 append_options(options, optarg);
3329 break;
3330
3331 case 'O':
3332 flags |= MS_OVERLAY;
3333 break;
3334 case ':':
3335 (void) fprintf(stderr, gettext("missing argument for "
3336 "'%c' option\n"), optopt);
3337 usage(B_FALSE);
3338 break;
3339 case '?':
3340 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3341 optopt);
3342 usage(B_FALSE);
3343 }
3344 }
3345
3346 argc -= optind;
3347 argv += optind;
3348
3349 /* check number of arguments */
3350 if (do_all) {
3351 zfs_handle_t **dslist = NULL;
3352 size_t i, count = 0;
3353 char *protocol = NULL;
3354
3355 if (op == OP_MOUNT) {
3356 types = ZFS_TYPE_FILESYSTEM;
3357 } else if (argc > 0) {
3358 if (strcmp(argv[0], "nfs") == 0 ||
3359 strcmp(argv[0], "smb") == 0) {
3360 types = ZFS_TYPE_FILESYSTEM;
3361 } else if (strcmp(argv[0], "iscsi") == 0) {
3362 types = ZFS_TYPE_VOLUME;
3363 } else {
3364 (void) fprintf(stderr, gettext("share type "
3365 "must be 'nfs', 'smb' or 'iscsi'\n"));
3366 usage(B_FALSE);
3367 }
3368 protocol = argv[0];
3369 argc--;
3370 argv++;
3371 } else {
3372 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
3373 }
3374
3375 if (argc != 0) {
3376 (void) fprintf(stderr, gettext("too many arguments\n"));
3377 usage(B_FALSE);
3378 }
3379
3380 get_all_datasets(types, &dslist, &count, verbose);
3381
3382 if (count == 0)
3383 return (0);
3384
3385 qsort(dslist, count, sizeof (void *), dataset_cmp);
3386
3387 for (i = 0; i < count; i++) {
3388 if (verbose)
3389 report_mount_progress(i, count);
3390
3391 if (share_mount_one(dslist[i], op, flags, protocol,
3392 B_FALSE, options) != 0)
3393 ret = 1;
3394 zfs_close(dslist[i]);
3395 }
3396
3397 free(dslist);
3398 } else if (argc == 0) {
3399 struct statvfs *sfs;
3400 int i, n;
3401
3402 if ((op == OP_SHARE) || (options != NULL)) {
3403 (void) fprintf(stderr, gettext("missing filesystem "
3404 "argument (specify -a for all)\n"));
3405 usage(B_FALSE);
3406 }
3407
3408 /*
3409 * When mount is given no arguments, go through /etc/mnttab and
3410 * display any active ZFS mounts. We hide any snapshots, since
3411 * they are controlled automatically.
3412 */
3413 if ((n = getmntinfo(&sfs, MNT_WAIT)) == 0) {
3414 fprintf(stderr, "getmntinfo(): %s\n", strerror(errno));
3415 return (0);
3416 }
3417 for (i = 0; i < n; i++) {
3418 if (strcmp(sfs[i].f_fstypename, MNTTYPE_ZFS) != 0 ||
3419 strchr(sfs[i].f_mntfromname, '@') != NULL)
3420 continue;
3421
3422 (void) printf("%-30s %s\n", sfs[i].f_mntfromname,
3423 sfs[i].f_mntonname);
3424 }
3425
3426 } else {
3427 zfs_handle_t *zhp;
3428
3429 types = ZFS_TYPE_FILESYSTEM;
3430 if (op == OP_SHARE)
3431 types |= ZFS_TYPE_VOLUME;
3432
3433 if (argc > 1) {
3434 (void) fprintf(stderr,
3435 gettext("too many arguments\n"));
3436 usage(B_FALSE);
3437 }
3438
3439 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) {
3440 ret = 1;
3441 } else {
3442 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
3443 options);
3444 zfs_close(zhp);
3445 }
3446 }
3447
3448 return (ret);
3449 }
3450
3451 /*
3452 * zfs mount -a [nfs | iscsi]
3453 * zfs mount filesystem
3454 *
3455 * Mount all filesystems, or mount the given filesystem.
3456 */
3457 static int
3458 zfs_do_mount(int argc, char **argv)
3459 {
3460 return (share_mount(OP_MOUNT, argc, argv));
3461 }
3462
3463 /*
3464 * zfs share -a [nfs | iscsi | smb]
3465 * zfs share filesystem
3466 *
3467 * Share all filesystems, or share the given filesystem.
3468 */
3469 static int
3470 zfs_do_share(int argc, char **argv)
3471 {
3472 return (share_mount(OP_SHARE, argc, argv));
3473 }
3474
3475 typedef struct unshare_unmount_node {
3476 zfs_handle_t *un_zhp;
3477 char *un_mountp;
3478 uu_avl_node_t un_avlnode;
3479 } unshare_unmount_node_t;
3480
3481 /* ARGSUSED */
3482 static int
3483 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
3484 {
3485 const unshare_unmount_node_t *l = larg;
3486 const unshare_unmount_node_t *r = rarg;
3487
3488 return (strcmp(l->un_mountp, r->un_mountp));
3489 }
3490
3491 /*
3492 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an
3493 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
3494 * and unmount it appropriately.
3495 */
3496 static int
3497 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
3498 {
3499 zfs_handle_t *zhp;
3500 int ret;
3501 struct stat64 statbuf;
3502 struct mnttab entry, search = { 0 };
3503 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
3504 ino_t path_inode;
3505
3506 /*
3507 * Search for the path in /etc/mnttab. Rather than looking for the
3508 * specific path, which can be fooled by non-standard paths (i.e. ".."
3509 * or "//"), we stat() the path and search for the corresponding
3510 * (major,minor) device pair.
3511 */
3512 if (stat64(path, &statbuf) != 0) {
3513 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
3514 cmdname, path, strerror(errno));
3515 return (1);
3516 }
3517 path_inode = statbuf.st_ino;
3518
3519 /*
3520 * Search for the given (major,minor) pair in the mount table.
3521 */
3522 rewind(mnttab_file);
3523 search.mnt_mountp = path;
3524 if ((ret = getmntany(mnttab_file, &entry, &search)) == 0) {
3525 if (op == OP_SHARE) {
3526 (void) fprintf(stderr, gettext("cannot %s '%s': not "
3527 "currently mounted\n"), cmdname, path);
3528 return (1);
3529 }
3530 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
3531 path);
3532 if ((ret = umount2(path, flags)) != 0)
3533 (void) fprintf(stderr, gettext("%s: %s\n"), path,
3534 strerror(errno));
3535 return (ret != 0);
3536 }
3537
3538 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
3539 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
3540 "filesystem\n"), cmdname, path);
3541 return (1);
3542 }
3543
3544 if ((zhp = zfs_open(g_zfs, entry.mnt_special,
3545 ZFS_TYPE_FILESYSTEM)) == NULL)
3546 return (1);
3547
3548 ret = 1;
3549 if (stat64(entry.mnt_mountp, &statbuf) != 0) {
3550 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
3551 cmdname, path, strerror(errno));
3552 goto out;
3553 } else if (statbuf.st_ino != path_inode) {
3554 (void) fprintf(stderr, gettext("cannot "
3555 "%s '%s': not a mountpoint\n"), cmdname, path);
3556 goto out;
3557 }
3558
3559 if (op == OP_SHARE) {
3560 char nfs_mnt_prop[ZFS_MAXPROPLEN];
3561 char smbshare_prop[ZFS_MAXPROPLEN];
3562
3563 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
3564 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
3565 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
3566 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
3567
3568 if (strcmp(nfs_mnt_prop, "off") == 0 &&
3569 strcmp(smbshare_prop, "off") == 0) {
3570 (void) fprintf(stderr, gettext("cannot unshare "
3571 "'%s': legacy share\n"), path);
3572 (void) fprintf(stderr, gettext("use "
3573 "unshare(1M) to unshare this filesystem\n"));
3574 } else if (!zfs_is_shared(zhp)) {
3575 (void) fprintf(stderr, gettext("cannot unshare '%s': "
3576 "not currently shared\n"), path);
3577 } else {
3578 ret = zfs_unshareall_bypath(zhp, path);
3579 }
3580 } else {
3581 char mtpt_prop[ZFS_MAXPROPLEN];
3582
3583 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
3584 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
3585
3586 if (is_manual) {
3587 ret = zfs_unmount(zhp, NULL, flags);
3588 } else if (strcmp(mtpt_prop, "legacy") == 0) {
3589 (void) fprintf(stderr, gettext("cannot unmount "
3590 "'%s': legacy mountpoint\n"),
3591 zfs_get_name(zhp));
3592 (void) fprintf(stderr, gettext("use umount(1M) "
3593 "to unmount this filesystem\n"));
3594 } else {
3595 ret = zfs_unmountall(zhp, flags);
3596 }
3597 }
3598
3599 out:
3600 zfs_close(zhp);
3601
3602 return (ret != 0);
3603 }
3604
3605 /*
3606 * Generic callback for unsharing or unmounting a filesystem.
3607 */
3608 static int
3609 unshare_unmount(int op, int argc, char **argv)
3610 {
3611 int do_all = 0;
3612 int flags = 0;
3613 int ret = 0;
3614 int types, c;
3615 zfs_handle_t *zhp;
3616 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN];
3617 char sharesmb[ZFS_MAXPROPLEN];
3618
3619 /* check options */
3620 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
3621 switch (c) {
3622 case 'a':
3623 do_all = 1;
3624 break;
3625 case 'f':
3626 flags = MS_FORCE;
3627 break;
3628 case '?':
3629 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3630 optopt);
3631 usage(B_FALSE);
3632 }
3633 }
3634
3635 argc -= optind;
3636 argv += optind;
3637
3638 if (do_all) {
3639 /*
3640 * We could make use of zfs_for_each() to walk all datasets in
3641 * the system, but this would be very inefficient, especially
3642 * since we would have to linearly search /etc/mnttab for each
3643 * one. Instead, do one pass through /etc/mnttab looking for
3644 * zfs entries and call zfs_unmount() for each one.
3645 *
3646 * Things get a little tricky if the administrator has created
3647 * mountpoints beneath other ZFS filesystems. In this case, we
3648 * have to unmount the deepest filesystems first. To accomplish
3649 * this, we place all the mountpoints in an AVL tree sorted by
3650 * the special type (dataset name), and walk the result in
3651 * reverse to make sure to get any snapshots first.
3652 */
3653 struct statvfs *sfs;
3654 int i, n;
3655 uu_avl_pool_t *pool;
3656 uu_avl_t *tree;
3657 unshare_unmount_node_t *node;
3658 uu_avl_index_t idx;
3659 uu_avl_walk_t *walk;
3660
3661 if (argc != 0) {
3662 (void) fprintf(stderr, gettext("too many arguments\n"));
3663 usage(B_FALSE);
3664 }
3665
3666 if ((pool = uu_avl_pool_create("unmount_pool",
3667 sizeof (unshare_unmount_node_t),
3668 offsetof(unshare_unmount_node_t, un_avlnode),
3669 unshare_unmount_compare,
3670 UU_DEFAULT)) == NULL) {
3671 (void) fprintf(stderr, gettext("internal error: "
3672 "out of memory\n"));
3673 exit(1);
3674 }
3675
3676 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) {
3677 (void) fprintf(stderr, gettext("internal error: "
3678 "out of memory\n"));
3679 exit(1);
3680 }
3681
3682 rewind(mnttab_file);
3683 if ((n = getmntinfo(&sfs, MNT_WAIT)) == 0) {
3684 (void) fprintf(stderr, gettext("internal error: "
3685 "getmntinfo() failed\n"));
3686 exit(1);
3687 }
3688 for (i = 0; i < n; i++) {
3689
3690 /* ignore non-ZFS entries */
3691 if (strcmp(sfs[i].f_fstypename, MNTTYPE_ZFS) != 0)
3692 continue;
3693
3694 /* ignore snapshots */
3695 if (strchr(sfs[i].f_mntfromname, '@') != NULL)
3696 continue;
3697
3698 if ((zhp = zfs_open(g_zfs, sfs[i].f_mntfromname,
3699 ZFS_TYPE_FILESYSTEM)) == NULL) {
3700 ret = 1;
3701 continue;
3702 }
3703
3704 switch (op) {
3705 case OP_SHARE:
3706 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
3707 nfsiscsi_mnt_prop,
3708 sizeof (nfsiscsi_mnt_prop),
3709 NULL, NULL, 0, B_FALSE) == 0);
3710 if (strcmp(nfsiscsi_mnt_prop, "off") != 0)
3711 break;
3712 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
3713 nfsiscsi_mnt_prop,
3714 sizeof (nfsiscsi_mnt_prop),
3715 NULL, NULL, 0, B_FALSE) == 0);
3716 if (strcmp(nfsiscsi_mnt_prop, "off") == 0)
3717 continue;
3718 break;
3719 case OP_MOUNT:
3720 /* Ignore legacy mounts */
3721 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
3722 nfsiscsi_mnt_prop,
3723 sizeof (nfsiscsi_mnt_prop),
3724 NULL, NULL, 0, B_FALSE) == 0);
3725 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0)
3726 continue;
3727 /* Ignore canmount=noauto mounts */
3728 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
3729 ZFS_CANMOUNT_NOAUTO)
3730 continue;
3731 default:
3732 break;
3733 }
3734
3735 node = safe_malloc(sizeof (unshare_unmount_node_t));
3736 node->un_zhp = zhp;
3737
3738 if ((node->un_mountp = strdup(sfs[i].f_mntonname)) ==
3739 NULL) {
3740 (void) fprintf(stderr, gettext("internal error:"
3741 " out of memory\n"));
3742 exit(1);
3743 }
3744
3745 uu_avl_node_init(node, &node->un_avlnode, pool);
3746
3747 if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
3748 uu_avl_insert(tree, node, idx);
3749 } else {
3750 zfs_close(node->un_zhp);
3751 free(node->un_mountp);
3752 free(node);
3753 }
3754 }
3755
3756 /*
3757 * Walk the AVL tree in reverse, unmounting each filesystem and
3758 * removing it from the AVL tree in the process.
3759 */
3760 if ((walk = uu_avl_walk_start(tree,
3761 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) {
3762 (void) fprintf(stderr,
3763 gettext("internal error: out of memory"));
3764 exit(1);
3765 }
3766
3767 while ((node = uu_avl_walk_next(walk)) != NULL) {
3768 uu_avl_remove(tree, node);
3769
3770 switch (op) {
3771 case OP_SHARE:
3772 if (zfs_unshareall_bypath(node->un_zhp,
3773 node->un_mountp) != 0)
3774 ret = 1;
3775 break;
3776
3777 case OP_MOUNT:
3778 if (zfs_unmount(node->un_zhp,
3779 node->un_mountp, flags) != 0)
3780 ret = 1;
3781 break;
3782 }
3783
3784 zfs_close(node->un_zhp);
3785 free(node->un_mountp);
3786 free(node);
3787 }
3788
3789 uu_avl_walk_end(walk);
3790 uu_avl_destroy(tree);
3791 uu_avl_pool_destroy(pool);
3792
3793 if (op == OP_SHARE) {
3794 /*
3795 * Finally, unshare any volumes shared via iSCSI.
3796 */
3797 zfs_handle_t **dslist = NULL;
3798 size_t i, count = 0;
3799
3800 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count,
3801 B_FALSE);
3802
3803 if (count != 0) {
3804 qsort(dslist, count, sizeof (void *),
3805 dataset_cmp);
3806
3807 for (i = 0; i < count; i++) {
3808 if (zfs_unshare_iscsi(dslist[i]) != 0)
3809 ret = 1;
3810 zfs_close(dslist[i]);
3811 }
3812
3813 free(dslist);
3814 }
3815 }
3816 } else {
3817 if (argc != 1) {
3818 if (argc == 0)
3819 (void) fprintf(stderr,
3820 gettext("missing filesystem argument\n"));
3821 else
3822 (void) fprintf(stderr,
3823 gettext("too many arguments\n"));
3824 usage(B_FALSE);
3825 }
3826
3827 /*
3828 * We have an argument, but it may be a full path or a ZFS
3829 * filesystem. Pass full paths off to unmount_path() (shared by
3830 * manual_unmount), otherwise open the filesystem and pass to
3831 * zfs_unmount().
3832 */
3833 if (argv[0][0] == '/')
3834 return (unshare_unmount_path(op, argv[0],
3835 flags, B_FALSE));
3836
3837 types = ZFS_TYPE_FILESYSTEM;
3838 if (op == OP_SHARE)
3839 types |= ZFS_TYPE_VOLUME;
3840
3841 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
3842 return (1);
3843
3844 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
3845 verify(zfs_prop_get(zhp, op == OP_SHARE ?
3846 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
3847 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL,
3848 NULL, 0, B_FALSE) == 0);
3849
3850 switch (op) {
3851 case OP_SHARE:
3852 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
3853 nfsiscsi_mnt_prop,
3854 sizeof (nfsiscsi_mnt_prop),
3855 NULL, NULL, 0, B_FALSE) == 0);
3856 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
3857 sharesmb, sizeof (sharesmb), NULL, NULL,
3858 0, B_FALSE) == 0);
3859
3860 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 &&
3861 strcmp(sharesmb, "off") == 0) {
3862 (void) fprintf(stderr, gettext("cannot "
3863 "unshare '%s': legacy share\n"),
3864 zfs_get_name(zhp));
3865 (void) fprintf(stderr, gettext("use "
3866 "unshare(1M) to unshare this "
3867 "filesystem\n"));
3868 ret = 1;
3869 } else if (!zfs_is_shared(zhp)) {
3870 (void) fprintf(stderr, gettext("cannot "
3871 "unshare '%s': not currently "
3872 "shared\n"), zfs_get_name(zhp));
3873 ret = 1;
3874 } else if (zfs_unshareall(zhp) != 0) {
3875 ret = 1;
3876 }
3877 break;
3878
3879 case OP_MOUNT:
3880 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) {
3881 (void) fprintf(stderr, gettext("cannot "
3882 "unmount '%s': legacy "
3883 "mountpoint\n"), zfs_get_name(zhp));
3884 (void) fprintf(stderr, gettext("use "
3885 "umount(1M) to unmount this "
3886 "filesystem\n"));
3887 ret = 1;
3888 } else if (!zfs_is_mounted(zhp, NULL)) {
3889 (void) fprintf(stderr, gettext("cannot "
3890 "unmount '%s': not currently "
3891 "mounted\n"),
3892 zfs_get_name(zhp));
3893 ret = 1;
3894 } else if (zfs_unmountall(zhp, flags) != 0) {
3895 ret = 1;
3896 }
3897 break;
3898 }
3899 } else {
3900 assert(op == OP_SHARE);
3901
3902 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI,
3903 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop),
3904 NULL, NULL, 0, B_FALSE) == 0);
3905
3906 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) {
3907 (void) fprintf(stderr, gettext("cannot unshare "
3908 "'%s': 'shareiscsi' property not set\n"),
3909 zfs_get_name(zhp));
3910 (void) fprintf(stderr, gettext("set "
3911 "'shareiscsi' property or use "
3912 "iscsitadm(1M) to share this volume\n"));
3913 ret = 1;
3914 } else if (!zfs_is_shared_iscsi(zhp)) {
3915 (void) fprintf(stderr, gettext("cannot "
3916 "unshare '%s': not currently shared\n"),
3917 zfs_get_name(zhp));
3918 ret = 1;
3919 } else if (zfs_unshare_iscsi(zhp) != 0) {
3920 ret = 1;
3921 }
3922 }
3923
3924 zfs_close(zhp);
3925 }
3926
3927 return (ret);
3928 }
3929
3930 /*
3931 * zfs unmount -a
3932 * zfs unmount filesystem
3933 *
3934 * Unmount all filesystems, or a specific ZFS filesystem.
3935 */
3936 static int
3937 zfs_do_unmount(int argc, char **argv)
3938 {
3939 return (unshare_unmount(OP_MOUNT, argc, argv));
3940 }
3941
3942 /*
3943 * zfs unshare -a
3944 * zfs unshare filesystem
3945 *
3946 * Unshare all filesystems, or a specific ZFS filesystem.
3947 */
3948 static int
3949 zfs_do_unshare(int argc, char **argv)
3950 {
3951 return (unshare_unmount(OP_SHARE, argc, argv));
3952 }
3953
3954 /*
3955 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is
3956 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'.
3957 */
3958 static int
3959 manual_mount(int argc, char **argv)
3960 {
3961 zfs_handle_t *zhp;
3962 char mountpoint[ZFS_MAXPROPLEN];
3963 char mntopts[MNT_LINE_MAX] = { '\0' };
3964 int ret;
3965 int c;
3966 int flags = 0;
3967 char *dataset, *path;
3968
3969 /* check options */
3970 while ((c = getopt(argc, argv, ":mo:O")) != -1) {
3971 switch (c) {
3972 case 'o':
3973 (void) strlcpy(mntopts, optarg, sizeof (mntopts));
3974 break;
3975 case 'O':
3976 flags |= MS_OVERLAY;
3977 break;
3978 case 'm':
3979 flags |= MS_NOMNTTAB;
3980 break;
3981 case ':':
3982 (void) fprintf(stderr, gettext("missing argument for "
3983 "'%c' option\n"), optopt);
3984 usage(B_FALSE);
3985 break;
3986 case '?':
3987 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3988 optopt);
3989 (void) fprintf(stderr, gettext("usage: mount [-o opts] "
3990 "<path>\n"));
3991 return (2);
3992 }
3993 }
3994
3995 argc -= optind;
3996 argv += optind;
3997
3998 /* check that we only have two arguments */
3999 if (argc != 2) {
4000 if (argc == 0)
4001 (void) fprintf(stderr, gettext("missing dataset "
4002 "argument\n"));
4003 else if (argc == 1)
4004 (void) fprintf(stderr,
4005 gettext("missing mountpoint argument\n"));
4006 else
4007 (void) fprintf(stderr, gettext("too many arguments\n"));
4008 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
4009 return (2);
4010 }
4011
4012 dataset = argv[0];
4013 path = argv[1];
4014
4015 /* try to open the dataset */
4016 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
4017 return (1);
4018
4019 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
4020 sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
4021
4022 /* check for legacy mountpoint and complain appropriately */
4023 ret = 0;
4024 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
4025 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS,
4026 NULL, 0, mntopts, sizeof (mntopts)) != 0) {
4027 (void) fprintf(stderr, gettext("mount failed: %s\n"),
4028 strerror(errno));
4029 ret = 1;
4030 }
4031 } else {
4032 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
4033 "mounted using 'mount -F zfs'\n"), dataset);
4034 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
4035 "instead.\n"), path);
4036 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' "
4037 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n"));
4038 (void) fprintf(stderr, gettext("See zfs(1M) for more "
4039 "information.\n"));
4040 ret = 1;
4041 }
4042
4043 return (ret);
4044 }
4045
4046 /*
4047 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow
4048 * unmounts of non-legacy filesystems, as this is the dominant administrative
4049 * interface.
4050 */
4051 static int
4052 manual_unmount(int argc, char **argv)
4053 {
4054 int flags = 0;
4055 int c;
4056
4057 /* check options */
4058 while ((c = getopt(argc, argv, "f")) != -1) {
4059 switch (c) {
4060 case 'f':
4061 flags = MS_FORCE;
4062 break;
4063 case '?':
4064 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4065 optopt);
4066 (void) fprintf(stderr, gettext("usage: unmount [-f] "
4067 "<path>\n"));
4068 return (2);
4069 }
4070 }
4071
4072 argc -= optind;
4073 argv += optind;
4074
4075 /* check arguments */
4076 if (argc != 1) {
4077 if (argc == 0)
4078 (void) fprintf(stderr, gettext("missing path "
4079 "argument\n"));
4080 else
4081 (void) fprintf(stderr, gettext("too many arguments\n"));
4082 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
4083 return (2);
4084 }
4085
4086 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
4087 }
4088
4089 static int
4090 volcheck(zpool_handle_t *zhp, void *data)
4091 {
4092 boolean_t isinit = *((boolean_t *)data);
4093
4094 if (isinit)
4095 return (zpool_create_zvol_links(zhp));
4096 else
4097 return (zpool_remove_zvol_links(zhp));
4098 }
4099
4100 /*
4101 * Iterate over all pools in the system and either create or destroy /dev/zvol
4102 * links, depending on the value of 'isinit'.
4103 */
4104 static int
4105 do_volcheck(boolean_t isinit)
4106 {
4107 return (zpool_iter(g_zfs, volcheck, &isinit) ? 1 : 0);
4108 }
4109
4110 static int
4111 find_command_idx(char *command, int *idx)
4112 {
4113 int i;
4114
4115 for (i = 0; i < NCOMMAND; i++) {
4116 if (command_table[i].name == NULL)
4117 continue;
4118
4119 if (strcmp(command, command_table[i].name) == 0) {
4120 *idx = i;
4121 return (0);
4122 }
4123 }
4124 return (1);
4125 }
4126
4127 int
4128 main(int argc, char **argv)
4129 {
4130 int ret;
4131 int i;
4132 char *progname;
4133 char *cmdname;
4134
4135 (void) setlocale(LC_ALL, "");
4136 (void) textdomain(TEXT_DOMAIN);
4137
4138 opterr = 0;
4139
4140 if ((g_zfs = libzfs_init()) == NULL) {
4141 (void) fprintf(stderr, gettext("internal error: failed to "
4142 "initialize ZFS library\n"));
4143 return (1);
4144 }
4145
4146 zpool_set_history_str("zfs", argc, argv, history_str);
4147 verify(zpool_stage_history(g_zfs, history_str) == 0);
4148
4149 libzfs_print_on_error(g_zfs, B_TRUE);
4150
4151 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
4152 (void) fprintf(stderr, gettext("internal error: unable to "
4153 "open %s\n"), MNTTAB);
4154 return (1);
4155 }
4156
4157 /*
4158 * This command also doubles as the /etc/fs mount and unmount program.
4159 * Determine if we should take this behavior based on argv[0].
4160 */
4161 progname = basename(argv[0]);
4162 if (strcmp(progname, "mount") == 0) {
4163 ret = manual_mount(argc, argv);
4164 } else if (strcmp(progname, "umount") == 0) {
4165 ret = manual_unmount(argc, argv);
4166 } else {
4167 /*
4168 * Make sure the user has specified some command.
4169 */
4170 if (argc < 2) {
4171 (void) fprintf(stderr, gettext("missing command\n"));
4172 usage(B_FALSE);
4173 }
4174
4175 cmdname = argv[1];
4176
4177 /*
4178 * The 'umount' command is an alias for 'unmount'
4179 */
4180 if (strcmp(cmdname, "umount") == 0)
4181 cmdname = "unmount";
4182
4183 /*
4184 * The 'recv' command is an alias for 'receive'
4185 */
4186 if (strcmp(cmdname, "recv") == 0)
4187 cmdname = "receive";
4188
4189 /*
4190 * Special case '-?'
4191 */
4192 if (strcmp(cmdname, "-?") == 0)
4193 usage(B_TRUE);
4194
4195 /*
4196 * 'volinit' and 'volfini' do not appear in the usage message,
4197 * so we have to special case them here.
4198 */
4199 if (strcmp(cmdname, "volinit") == 0)
4200 return (do_volcheck(B_TRUE));
4201 else if (strcmp(cmdname, "volfini") == 0)
4202 return (do_volcheck(B_FALSE));
4203
4204 /*
4205 * Run the appropriate command.
4206 */
4207 if (find_command_idx(cmdname, &i) == 0) {
4208 current_command = &command_table[i];
4209 ret = command_table[i].func(argc - 1, argv + 1);
4210 } else if (strchr(cmdname, '=') != NULL) {
4211 verify(find_command_idx("set", &i) == 0);
4212 current_command = &command_table[i];
4213 ret = command_table[i].func(argc, argv);
4214 } else {
4215 (void) fprintf(stderr, gettext("unrecognized "
4216 "command '%s'\n"), cmdname);
4217 usage(B_FALSE);
4218 }
4219 }
4220
4221 (void) fclose(mnttab_file);
4222
4223 libzfs_fini(g_zfs);
4224
4225 /*
4226 * The 'ZFS_ABORT' environment variable causes us to dump core on exit
4227 * for the purposes of running ::findleaks.
4228 */
4229 if (getenv("ZFS_ABORT") != NULL) {
4230 (void) printf("dumping core by request\n");
4231 abort();
4232 }
4233
4234 return (ret);
4235 }
NetBSD on the FriendlyARM MINI2440