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34dc7c2f
BB		 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/*
d164b209 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
34dc7c2f
BB		 24 * Use is subject to license terms.
25 */
26
34dc7c2f
BB		 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>
9babb374
BB		 42#include <grp.h>
43#include <pwd.h>
34dc7c2f
BB		 44#include <sys/mkdev.h>
45#include <sys/mntent.h>
46#include <sys/mnttab.h>
47#include <sys/mount.h>
48#include <sys/stat.h>
9babb374 49#include <sys/fs/zfs.h>
34dc7c2f
BB		 50
51#include <libzfs.h>
52#include <libuutil.h>
53
54#include "zfs_iter.h"
55#include "zfs_util.h"
56
57libzfs_handle_t *g_zfs;
58
59static FILE *mnttab_file;
60static char history_str[HIS_MAX_RECORD_LEN];
9babb374 61const char *pypath = "/usr/lib/zfs/pyzfs.py";
34dc7c2f
BB		 62
63static int zfs_do_clone(int argc, char **argv);
64static int zfs_do_create(int argc, char **argv);
65static int zfs_do_destroy(int argc, char **argv);
66static int zfs_do_get(int argc, char **argv);
67static int zfs_do_inherit(int argc, char **argv);
68static int zfs_do_list(int argc, char **argv);
69static int zfs_do_mount(int argc, char **argv);
70static int zfs_do_rename(int argc, char **argv);
71static int zfs_do_rollback(int argc, char **argv);
72static int zfs_do_set(int argc, char **argv);
73static int zfs_do_upgrade(int argc, char **argv);
74static int zfs_do_snapshot(int argc, char **argv);
75static int zfs_do_unmount(int argc, char **argv);
76static int zfs_do_share(int argc, char **argv);
77static int zfs_do_unshare(int argc, char **argv);
78static int zfs_do_send(int argc, char **argv);
79static int zfs_do_receive(int argc, char **argv);
80static int zfs_do_promote(int argc, char **argv);
9babb374
BB		 81static int zfs_do_userspace(int argc, char **argv);
82static int zfs_do_python(int argc, char **argv);
45d1cae3
BB		 83static int zfs_do_hold(int argc, char **argv);
84static int zfs_do_release(int argc, char **argv);
34dc7c2f
BB		 85
86/*
b128c09f 87 * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
34dc7c2f 88 */
b128c09f
BB		 89
90#ifdef DEBUG
34dc7c2f
BB		 91const char *
92_umem_debug_init(void)
93{
94 return ("default,verbose"); /* $UMEM_DEBUG setting */
95}
96
97const char *
98_umem_logging_init(void)
99{
100 return ("fail,contents"); /* $UMEM_LOGGING setting */
101}
b128c09f 102#endif
34dc7c2f
BB		 103
104typedef enum {
105 HELP_CLONE,
106 HELP_CREATE,
107 HELP_DESTROY,
108 HELP_GET,
109 HELP_INHERIT,
110 HELP_UPGRADE,
111 HELP_LIST,
112 HELP_MOUNT,
113 HELP_PROMOTE,
114 HELP_RECEIVE,
115 HELP_RENAME,
116 HELP_ROLLBACK,
117 HELP_SEND,
118 HELP_SET,
119 HELP_SHARE,
120 HELP_SNAPSHOT,
121 HELP_UNMOUNT,
122 HELP_UNSHARE,
123 HELP_ALLOW,
9babb374
BB		 124 HELP_UNALLOW,
125 HELP_USERSPACE,
45d1cae3
BB		 126 HELP_GROUPSPACE,
127 HELP_HOLD,
128 HELP_HOLDS,
129 HELP_RELEASE
34dc7c2f
BB		 130} zfs_help_t;
131
132typedef struct zfs_command {
133 const char *name;
134 int (*func)(int argc, char **argv);
135 zfs_help_t usage;
136} zfs_command_t;
137
138/*
139 * Master command table. Each ZFS command has a name, associated function, and
140 * usage message. The usage messages need to be internationalized, so we have
141 * to have a function to return the usage message based on a command index.
142 *
143 * These commands are organized according to how they are displayed in the usage
144 * message. An empty command (one with a NULL name) indicates an empty line in
145 * the generic usage message.
146 */
147static zfs_command_t command_table[] = {
148 { "create", zfs_do_create, HELP_CREATE },
149 { "destroy", zfs_do_destroy, HELP_DESTROY },
150 { NULL },
151 { "snapshot", zfs_do_snapshot, HELP_SNAPSHOT },
152 { "rollback", zfs_do_rollback, HELP_ROLLBACK },
153 { "clone", zfs_do_clone, HELP_CLONE },
154 { "promote", zfs_do_promote, HELP_PROMOTE },
155 { "rename", zfs_do_rename, HELP_RENAME },
156 { NULL },
157 { "list", zfs_do_list, HELP_LIST },
158 { NULL },
159 { "set", zfs_do_set, HELP_SET },
160 { "get", zfs_do_get, HELP_GET },
161 { "inherit", zfs_do_inherit, HELP_INHERIT },
162 { "upgrade", zfs_do_upgrade, HELP_UPGRADE },
9babb374
BB		 163 { "userspace", zfs_do_userspace, HELP_USERSPACE },
164 { "groupspace", zfs_do_userspace, HELP_GROUPSPACE },
34dc7c2f
BB		 165 { NULL },
166 { "mount", zfs_do_mount, HELP_MOUNT },
167 { "unmount", zfs_do_unmount, HELP_UNMOUNT },
168 { "share", zfs_do_share, HELP_SHARE },
169 { "unshare", zfs_do_unshare, HELP_UNSHARE },
170 { NULL },
171 { "send", zfs_do_send, HELP_SEND },
172 { "receive", zfs_do_receive, HELP_RECEIVE },
173 { NULL },
9babb374 174 { "allow", zfs_do_python, HELP_ALLOW },
34dc7c2f 175 { NULL },
9babb374 176 { "unallow", zfs_do_python, HELP_UNALLOW },
45d1cae3
BB		 177 { NULL },
178 { "hold", zfs_do_hold, HELP_HOLD },
179 { "holds", zfs_do_python, HELP_HOLDS },
180 { "release", zfs_do_release, HELP_RELEASE },
34dc7c2f
BB		 181};
182
183#define NCOMMAND (sizeof (command_table) / sizeof (command_table[0]))
184
185zfs_command_t *current_command;
186
187static const char *
188get_usage(zfs_help_t idx)
189{
190 switch (idx) {
191 case HELP_CLONE:
b128c09f
BB		 192 return (gettext("\tclone [-p] [-o property=value] ... "
193 "<snapshot> <filesystem|volume>\n"));
34dc7c2f
BB		 194 case HELP_CREATE:
195 return (gettext("\tcreate [-p] [-o property=value] ... "
196 "<filesystem>\n"
197 "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
198 "-V <size> <volume>\n"));
199 case HELP_DESTROY:
200 return (gettext("\tdestroy [-rRf] "
45d1cae3
BB		 201 "<filesystem|volume|snapshot>\n"
202 "\tdestroy -d [-r] <filesystem|volume|snapshot>\n"));
34dc7c2f 203 case HELP_GET:
9babb374
BB		 204 return (gettext("\tget [-rHp] [-d max] "
205 "[-o field[,...]] [-s source[,...]]\n"
34dc7c2f
BB		 206 "\t <\"all\" | property[,...]> "
207 "[filesystem|volume|snapshot] ...\n"));
208 case HELP_INHERIT:
209 return (gettext("\tinherit [-r] <property> "
b128c09f 210 "<filesystem|volume|snapshot> ...\n"));
34dc7c2f
BB		 211 case HELP_UPGRADE:
212 return (gettext("\tupgrade [-v]\n"
213 "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
214 case HELP_LIST:
9babb374
BB		 215 return (gettext("\tlist [-rH][-d max] "
216 "[-o property[,...]] [-t type[,...]] [-s property] ...\n"
34dc7c2f
BB		 217 "\t [-S property] ... "
218 "[filesystem|volume|snapshot] ...\n"));
219 case HELP_MOUNT:
220 return (gettext("\tmount\n"
221 "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
222 case HELP_PROMOTE:
223 return (gettext("\tpromote <clone-filesystem>\n"));
224 case HELP_RECEIVE:
225 return (gettext("\treceive [-vnF] <filesystem|volume|"
226 "snapshot>\n"
227 "\treceive [-vnF] -d <filesystem>\n"));
228 case HELP_RENAME:
229 return (gettext("\trename <filesystem|volume|snapshot> "
230 "<filesystem|volume|snapshot>\n"
231 "\trename -p <filesystem|volume> <filesystem|volume>\n"
232 "\trename -r <snapshot> <snapshot>"));
233 case HELP_ROLLBACK:
234 return (gettext("\trollback [-rRf] <snapshot>\n"));
235 case HELP_SEND:
236 return (gettext("\tsend [-R] [-[iI] snapshot] <snapshot>\n"));
237 case HELP_SET:
238 return (gettext("\tset <property=value> "
b128c09f 239 "<filesystem|volume|snapshot> ...\n"));
34dc7c2f
BB		 240 case HELP_SHARE:
241 return (gettext("\tshare <-a | filesystem>\n"));
242 case HELP_SNAPSHOT:
b128c09f 243 return (gettext("\tsnapshot [-r] [-o property=value] ... "
34dc7c2f
BB		 244 "<filesystem@snapname|volume@snapname>\n"));
245 case HELP_UNMOUNT:
246 return (gettext("\tunmount [-f] "
247 "<-a | filesystem|mountpoint>\n"));
248 case HELP_UNSHARE:
45d1cae3 249 return (gettext("\tunshare "
34dc7c2f
BB		 250 "<-a | filesystem|mountpoint>\n"));
251 case HELP_ALLOW:
9babb374
BB		 252 return (gettext("\tallow <filesystem|volume>\n"
253 "\tallow [-ldug] "
34dc7c2f
BB		 254 "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
255 "\t <filesystem|volume>\n"
256 "\tallow [-ld] -e <perm|@setname>[,...] "
257 "<filesystem|volume>\n"
258 "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
259 "\tallow -s @setname <perm|@setname>[,...] "
260 "<filesystem|volume>\n"));
261 case HELP_UNALLOW:
262 return (gettext("\tunallow [-rldug] "
263 "<\"everyone\"|user|group>[,...]\n"
264 "\t [<perm|@setname>[,...]] <filesystem|volume>\n"
265 "\tunallow [-rld] -e [<perm|@setname>[,...]] "
266 "<filesystem|volume>\n"
267 "\tunallow [-r] -c [<perm|@setname>[,...]] "
268 "<filesystem|volume>\n"
269 "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
270 "<filesystem|volume>\n"));
9babb374
BB		 271 case HELP_USERSPACE:
272 return (gettext("\tuserspace [-hniHp] [-o field[,...]] "
273 "[-sS field] ... [-t type[,...]]\n"
274 "\t <filesystem|snapshot>\n"));
275 case HELP_GROUPSPACE:
276 return (gettext("\tgroupspace [-hniHpU] [-o field[,...]] "
277 "[-sS field] ... [-t type[,...]]\n"
278 "\t <filesystem|snapshot>\n"));
45d1cae3
BB		 279 case HELP_HOLD:
280 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
281 case HELP_HOLDS:
282 return (gettext("\tholds [-r] <snapshot> ...\n"));
283 case HELP_RELEASE:
284 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
34dc7c2f
BB		 285 }
286
287 abort();
288 /* NOTREACHED */
289}
290
291/*
292 * Utility function to guarantee malloc() success.
293 */
294void *
295safe_malloc(size_t size)
296{
297 void *data;
298
299 if ((data = calloc(1, size)) == NULL) {
300 (void) fprintf(stderr, "internal error: out of memory\n");
301 exit(1);
302 }
303
304 return (data);
305}
306
307/*
308 * Callback routine that will print out information for each of
309 * the properties.
310 */
311static int
312usage_prop_cb(int prop, void *cb)
313{
314 FILE *fp = cb;
315
b128c09f 316 (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
34dc7c2f 317
b128c09f
BB		 318 if (zfs_prop_readonly(prop))
319 (void) fprintf(fp, " NO ");
34dc7c2f 320 else
b128c09f 321 (void) fprintf(fp, "YES ");
34dc7c2f
BB		 322
323 if (zfs_prop_inheritable(prop))
324 (void) fprintf(fp, " YES ");
325 else
326 (void) fprintf(fp, " NO ");
327
328 if (zfs_prop_values(prop) == NULL)
329 (void) fprintf(fp, "-\n");
330 else
331 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
332
333 return (ZPROP_CONT);
334}
335
336/*
337 * Display usage message. If we're inside a command, display only the usage for
338 * that command. Otherwise, iterate over the entire command table and display
339 * a complete usage message.
340 */
341static void
342usage(boolean_t requested)
343{
344 int i;
345 boolean_t show_properties = B_FALSE;
34dc7c2f
BB		 346 FILE *fp = requested ? stdout : stderr;
347
348 if (current_command == NULL) {
349
350 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
351 (void) fprintf(fp,
352 gettext("where 'command' is one of the following:\n\n"));
353
354 for (i = 0; i < NCOMMAND; i++) {
355 if (command_table[i].name == NULL)
356 (void) fprintf(fp, "\n");
357 else
358 (void) fprintf(fp, "%s",
359 get_usage(command_table[i].usage));
360 }
361
362 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
363 "pool/[dataset/]*dataset[@name]\n"));
364 } else {
365 (void) fprintf(fp, gettext("usage:\n"));
366 (void) fprintf(fp, "%s", get_usage(current_command->usage));
367 }
368
369 if (current_command != NULL &&
370 (strcmp(current_command->name, "set") == 0 ||
371 strcmp(current_command->name, "get") == 0 ||
372 strcmp(current_command->name, "inherit") == 0 ||
373 strcmp(current_command->name, "list") == 0))
374 show_properties = B_TRUE;
375
34dc7c2f 376 if (show_properties) {
34dc7c2f
BB		 377 (void) fprintf(fp,
378 gettext("\nThe following properties are supported:\n"));
379
380 (void) fprintf(fp, "\n\t%-14s %s %s %s\n\n",
381 "PROPERTY", "EDIT", "INHERIT", "VALUES");
382
383 /* Iterate over all properties */
384 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
385 ZFS_TYPE_DATASET);
386
9babb374
BB		 387 (void) fprintf(fp, "\t%-15s ", "userused@...");
388 (void) fprintf(fp, " NO NO <size>\n");
389 (void) fprintf(fp, "\t%-15s ", "groupused@...");
390 (void) fprintf(fp, " NO NO <size>\n");
391 (void) fprintf(fp, "\t%-15s ", "userquota@...");
392 (void) fprintf(fp, "YES NO <size> | none\n");
393 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
394 (void) fprintf(fp, "YES NO <size> | none\n");
395
34dc7c2f
BB		 396 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
397 "with standard units such as K, M, G, etc.\n"));
b128c09f 398 (void) fprintf(fp, gettext("\nUser-defined properties can "
34dc7c2f 399 "be specified by using a name containing a colon (:).\n"));
9babb374
BB		 400 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ "
401 "properties must be appended with\n"
402 "a user or group specifier of one of these forms:\n"
403 " POSIX name (eg: \"matt\")\n"
404 " POSIX id (eg: \"126829\")\n"
405 " SMB name@domain (eg: \"matt@sun\")\n"
406 " SMB SID (eg: \"S-1-234-567-89\")\n"));
34dc7c2f 407 } else {
34dc7c2f 408 (void) fprintf(fp,
fb5f0bc8
BB		 409 gettext("\nFor the property list, run: %s\n"),
410 "zfs set|get");
34dc7c2f 411 (void) fprintf(fp,
fb5f0bc8
BB		 412 gettext("\nFor the delegated permission list, run: %s\n"),
413 "zfs allow|unallow");
34dc7c2f
BB		 414 }
415
416 /*
417 * See comments at end of main().
418 */
419 if (getenv("ZFS_ABORT") != NULL) {
420 (void) printf("dumping core by request\n");
421 abort();
422 }
423
424 exit(requested ? 0 : 2);
425}
426
b128c09f
BB		 427static int
428parseprop(nvlist_t *props)
429{
430 char *propname = optarg;
431 char *propval, *strval;
432
433 if ((propval = strchr(propname, '=')) == NULL) {
434 (void) fprintf(stderr, gettext("missing "
435 "'=' for -o option\n"));
436 return (-1);
437 }
438 *propval = '\0';
439 propval++;
440 if (nvlist_lookup_string(props, propname, &strval) == 0) {
441 (void) fprintf(stderr, gettext("property '%s' "
442 "specified multiple times\n"), propname);
443 return (-1);
444 }
445 if (nvlist_add_string(props, propname, propval) != 0) {
446 (void) fprintf(stderr, gettext("internal "
447 "error: out of memory\n"));
448 return (-1);
449 }
450 return (0);
b128c09f
BB		 451}
452
9babb374
BB		 453static int
454parse_depth(char *opt, int *flags)
455{
456 char *tmp;
457 int depth;
458
459 depth = (int)strtol(opt, &tmp, 0);
460 if (*tmp) {
461 (void) fprintf(stderr,
462 gettext("%s is not an integer\n"), optarg);
463 usage(B_FALSE);
464 }
465 if (depth < 0) {
466 (void) fprintf(stderr,
467 gettext("Depth can not be negative.\n"));
468 usage(B_FALSE);
469 }
470 *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
471 return (depth);
472}
473
34dc7c2f 474/*
b128c09f 475 * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
34dc7c2f
BB		 476 *
477 * Given an existing dataset, create a writable copy whose initial contents
478 * are the same as the source. The newly created dataset maintains a
479 * dependency on the original; the original cannot be destroyed so long as
480 * the clone exists.
481 *
482 * The '-p' flag creates all the non-existing ancestors of the target first.
483 */
484static int
485zfs_do_clone(int argc, char **argv)
486{
b128c09f 487 zfs_handle_t *zhp = NULL;
34dc7c2f 488 boolean_t parents = B_FALSE;
b128c09f 489 nvlist_t *props;
34dc7c2f
BB		 490 int ret;
491 int c;
492
b128c09f
BB		 493 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
494 (void) fprintf(stderr, gettext("internal error: "
495 "out of memory\n"));
496 return (1);
497 }
498
34dc7c2f 499 /* check options */
b128c09f 500 while ((c = getopt(argc, argv, "o:p")) != -1) {
34dc7c2f 501 switch (c) {
b128c09f
BB		 502 case 'o':
503 if (parseprop(props))
504 return (1);
505 break;
34dc7c2f
BB		 506 case 'p':
507 parents = B_TRUE;
508 break;
509 case '?':
510 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
511 optopt);
b128c09f 512 goto usage;
34dc7c2f
BB		 513 }
514 }
515
516 argc -= optind;
517 argv += optind;
518
519 /* check number of arguments */
520 if (argc < 1) {
521 (void) fprintf(stderr, gettext("missing source dataset "
522 "argument\n"));
b128c09f 523 goto usage;
34dc7c2f
BB		 524 }
525 if (argc < 2) {
526 (void) fprintf(stderr, gettext("missing target dataset "
527 "argument\n"));
b128c09f 528 goto usage;
34dc7c2f
BB		 529 }
530 if (argc > 2) {
531 (void) fprintf(stderr, gettext("too many arguments\n"));
b128c09f 532 goto usage;
34dc7c2f
BB		 533 }
534
535 /* open the source dataset */
536 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
537 return (1);
538
539 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
540 ZFS_TYPE_VOLUME)) {
541 /*
542 * Now create the ancestors of the target dataset. If the
543 * target already exists and '-p' option was used we should not
544 * complain.
545 */
546 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
547 ZFS_TYPE_VOLUME))
548 return (0);
549 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
550 return (1);
551 }
552
553 /* pass to libzfs */
b128c09f 554 ret = zfs_clone(zhp, argv[1], props);
34dc7c2f
BB		 555
556 /* create the mountpoint if necessary */
557 if (ret == 0) {
558 zfs_handle_t *clone;
559
560 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
561 if (clone != NULL) {
562 if ((ret = zfs_mount(clone, NULL, 0)) == 0)
563 ret = zfs_share(clone);
564 zfs_close(clone);
565 }
566 }
567
568 zfs_close(zhp);
b128c09f 569 nvlist_free(props);
34dc7c2f 570
b128c09f
BB		 571 return (!!ret);
572
573usage:
574 if (zhp)
575 zfs_close(zhp);
576 nvlist_free(props);
577 usage(B_FALSE);
578 return (-1);
34dc7c2f
BB		 579}
580
581/*
582 * zfs create [-p] [-o prop=value] ... fs
583 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
584 *
585 * Create a new dataset. This command can be used to create filesystems
586 * and volumes. Snapshot creation is handled by 'zfs snapshot'.
587 * For volumes, the user must specify a size to be used.
588 *
589 * The '-s' flag applies only to volumes, and indicates that we should not try
590 * to set the reservation for this volume. By default we set a reservation
591 * equal to the size for any volume. For pools with SPA_VERSION >=
592 * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
593 *
594 * The '-p' flag creates all the non-existing ancestors of the target first.
595 */
596static int
597zfs_do_create(int argc, char **argv)
598{
599 zfs_type_t type = ZFS_TYPE_FILESYSTEM;
600 zfs_handle_t *zhp = NULL;
601 uint64_t volsize;
602 int c;
603 boolean_t noreserve = B_FALSE;
604 boolean_t bflag = B_FALSE;
605 boolean_t parents = B_FALSE;
606 int ret = 1;
b128c09f 607 nvlist_t *props;
34dc7c2f 608 uint64_t intval;
34dc7c2f
BB		 609 int canmount;
610
611 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
612 (void) fprintf(stderr, gettext("internal error: "
613 "out of memory\n"));
614 return (1);
615 }
616
617 /* check options */
618 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) {
619 switch (c) {
620 case 'V':
621 type = ZFS_TYPE_VOLUME;
622 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
623 (void) fprintf(stderr, gettext("bad volume "
624 "size '%s': %s\n"), optarg,
625 libzfs_error_description(g_zfs));
626 goto error;
627 }
628
629 if (nvlist_add_uint64(props,
630 zfs_prop_to_name(ZFS_PROP_VOLSIZE),
631 intval) != 0) {
632 (void) fprintf(stderr, gettext("internal "
633 "error: out of memory\n"));
634 goto error;
635 }
636 volsize = intval;
637 break;
638 case 'p':
639 parents = B_TRUE;
640 break;
641 case 'b':
642 bflag = B_TRUE;
643 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
644 (void) fprintf(stderr, gettext("bad volume "
645 "block size '%s': %s\n"), optarg,
646 libzfs_error_description(g_zfs));
647 goto error;
648 }
649
650 if (nvlist_add_uint64(props,
651 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
652 intval) != 0) {
653 (void) fprintf(stderr, gettext("internal "
654 "error: out of memory\n"));
655 goto error;
656 }
657 break;
658 case 'o':
b128c09f 659 if (parseprop(props))
34dc7c2f 660 goto error;
34dc7c2f
BB		 661 break;
662 case 's':
663 noreserve = B_TRUE;
664 break;
665 case ':':
666 (void) fprintf(stderr, gettext("missing size "
667 "argument\n"));
668 goto badusage;
669 break;
670 case '?':
671 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
672 optopt);
673 goto badusage;
674 }
675 }
676
677 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
678 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
679 "used when creating a volume\n"));
680 goto badusage;
681 }
682
683 argc -= optind;
684 argv += optind;
685
686 /* check number of arguments */
687 if (argc == 0) {
688 (void) fprintf(stderr, gettext("missing %s argument\n"),
689 zfs_type_to_name(type));
690 goto badusage;
691 }
692 if (argc > 1) {
693 (void) fprintf(stderr, gettext("too many arguments\n"));
694 goto badusage;
695 }
696
697 if (type == ZFS_TYPE_VOLUME && !noreserve) {
698 zpool_handle_t *zpool_handle;
699 uint64_t spa_version;
700 char *p;
701 zfs_prop_t resv_prop;
b128c09f 702 char *strval;
34dc7c2f
BB		 703
704 if (p = strchr(argv[0], '/'))
705 *p = '\0';
706 zpool_handle = zpool_open(g_zfs, argv[0]);
707 if (p != NULL)
708 *p = '/';
709 if (zpool_handle == NULL)
710 goto error;
711 spa_version = zpool_get_prop_int(zpool_handle,
712 ZPOOL_PROP_VERSION, NULL);
713 zpool_close(zpool_handle);
714 if (spa_version >= SPA_VERSION_REFRESERVATION)
715 resv_prop = ZFS_PROP_REFRESERVATION;
716 else
717 resv_prop = ZFS_PROP_RESERVATION;
718
719 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
720 &strval) != 0) {
721 if (nvlist_add_uint64(props,
722 zfs_prop_to_name(resv_prop), volsize) != 0) {
723 (void) fprintf(stderr, gettext("internal "
724 "error: out of memory\n"));
725 nvlist_free(props);
726 return (1);
727 }
728 }
729 }
730
731 if (parents && zfs_name_valid(argv[0], type)) {
732 /*
733 * Now create the ancestors of target dataset. If the target
734 * already exists and '-p' option was used we should not
735 * complain.
736 */
737 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
738 ret = 0;
739 goto error;
740 }
741 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
742 goto error;
743 }
744
745 /* pass to libzfs */
746 if (zfs_create(g_zfs, argv[0], type, props) != 0)
747 goto error;
748
749 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
750 goto error;
751 /*
752 * if the user doesn't want the dataset automatically mounted,
753 * then skip the mount/share step
754 */
755
756 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
757
758 /*
759 * Mount and/or share the new filesystem as appropriate. We provide a
760 * verbose error message to let the user know that their filesystem was
761 * in fact created, even if we failed to mount or share it.
762 */
763 ret = 0;
764 if (canmount == ZFS_CANMOUNT_ON) {
765 if (zfs_mount(zhp, NULL, 0) != 0) {
766 (void) fprintf(stderr, gettext("filesystem "
767 "successfully created, but not mounted\n"));
768 ret = 1;
769 } else if (zfs_share(zhp) != 0) {
770 (void) fprintf(stderr, gettext("filesystem "
771 "successfully created, but not shared\n"));
772 ret = 1;
773 }
774 }
775
776error:
777 if (zhp)
778 zfs_close(zhp);
779 nvlist_free(props);
780 return (ret);
781badusage:
782 nvlist_free(props);
783 usage(B_FALSE);
784 return (2);
785}
786
787/*
45d1cae3
BB		 788 * zfs destroy [-rRf] <fs, snap, vol>
789 * zfs destroy -d [-r] <fs, snap, vol>
34dc7c2f
BB		 790 *
791 * -r Recursively destroy all children
792 * -R Recursively destroy all dependents, including clones
793 * -f Force unmounting of any dependents
45d1cae3 794 * -d If we can't destroy now, mark for deferred destruction
34dc7c2f
BB		 795 *
796 * Destroys the given dataset. By default, it will unmount any filesystems,
797 * and refuse to destroy a dataset that has any dependents. A dependent can
798 * either be a child, or a clone of a child.
799 */
800typedef struct destroy_cbdata {
801 boolean_t cb_first;
802 int cb_force;
803 int cb_recurse;
804 int cb_error;
805 int cb_needforce;
806 int cb_doclones;
807 boolean_t cb_closezhp;
808 zfs_handle_t *cb_target;
809 char *cb_snapname;
45d1cae3 810 boolean_t cb_defer_destroy;
34dc7c2f
BB		 811} destroy_cbdata_t;
812
813/*
814 * Check for any dependents based on the '-r' or '-R' flags.
815 */
816static int
817destroy_check_dependent(zfs_handle_t *zhp, void *data)
818{
819 destroy_cbdata_t *cbp = data;
820 const char *tname = zfs_get_name(cbp->cb_target);
821 const char *name = zfs_get_name(zhp);
822
823 if (strncmp(tname, name, strlen(tname)) == 0 &&
824 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
825 /*
826 * This is a direct descendant, not a clone somewhere else in
827 * the hierarchy.
828 */
829 if (cbp->cb_recurse)
830 goto out;
831
832 if (cbp->cb_first) {
833 (void) fprintf(stderr, gettext("cannot destroy '%s': "
834 "%s has children\n"),
835 zfs_get_name(cbp->cb_target),
836 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
837 (void) fprintf(stderr, gettext("use '-r' to destroy "
838 "the following datasets:\n"));
839 cbp->cb_first = B_FALSE;
840 cbp->cb_error = 1;
841 }
842
843 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
844 } else {
845 /*
846 * This is a clone. We only want to report this if the '-r'
847 * wasn't specified, or the target is a snapshot.
848 */
849 if (!cbp->cb_recurse &&
850 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
851 goto out;
852
853 if (cbp->cb_first) {
854 (void) fprintf(stderr, gettext("cannot destroy '%s': "
855 "%s has dependent clones\n"),
856 zfs_get_name(cbp->cb_target),
857 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
858 (void) fprintf(stderr, gettext("use '-R' to destroy "
859 "the following datasets:\n"));
860 cbp->cb_first = B_FALSE;
861 cbp->cb_error = 1;
862 }
863
864 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
865 }
866
867out:
868 zfs_close(zhp);
869 return (0);
870}
871
872static int
873destroy_callback(zfs_handle_t *zhp, void *data)
874{
875 destroy_cbdata_t *cbp = data;
876
877 /*
878 * Ignore pools (which we've already flagged as an error before getting
879 * here.
880 */
881 if (strchr(zfs_get_name(zhp), '/') == NULL &&
882 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
883 zfs_close(zhp);
884 return (0);
885 }
886
887 /*
888 * Bail out on the first error.
889 */
890 if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 ||
45d1cae3 891 zfs_destroy(zhp, cbp->cb_defer_destroy) != 0) {
34dc7c2f
BB		 892 zfs_close(zhp);
893 return (-1);
894 }
895
896 zfs_close(zhp);
897 return (0);
898}
899
900static int
901destroy_snap_clones(zfs_handle_t *zhp, void *arg)
902{
903 destroy_cbdata_t *cbp = arg;
904 char thissnap[MAXPATHLEN];
905 zfs_handle_t *szhp;
906 boolean_t closezhp = cbp->cb_closezhp;
907 int rv;
908
909 (void) snprintf(thissnap, sizeof (thissnap),
910 "%s@%s", zfs_get_name(zhp), cbp->cb_snapname);
911
912 libzfs_print_on_error(g_zfs, B_FALSE);
913 szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT);
914 libzfs_print_on_error(g_zfs, B_TRUE);
915 if (szhp) {
916 /*
917 * Destroy any clones of this snapshot
918 */
919 if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback,
920 cbp) != 0) {
921 zfs_close(szhp);
922 if (closezhp)
923 zfs_close(zhp);
924 return (-1);
925 }
926 zfs_close(szhp);
927 }
928
929 cbp->cb_closezhp = B_TRUE;
930 rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg);
931 if (closezhp)
932 zfs_close(zhp);
933 return (rv);
934}
935
936static int
937zfs_do_destroy(int argc, char **argv)
938{
939 destroy_cbdata_t cb = { 0 };
940 int c;
941 zfs_handle_t *zhp;
942 char *cp;
943
944 /* check options */
45d1cae3 945 while ((c = getopt(argc, argv, "dfrR")) != -1) {
34dc7c2f 946 switch (c) {
45d1cae3
BB		 947 case 'd':
948 cb.cb_defer_destroy = B_TRUE;
949 break;
34dc7c2f
BB		 950 case 'f':
951 cb.cb_force = 1;
952 break;
953 case 'r':
954 cb.cb_recurse = 1;
955 break;
956 case 'R':
957 cb.cb_recurse = 1;
958 cb.cb_doclones = 1;
959 break;
960 case '?':
961 default:
962 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
963 optopt);
964 usage(B_FALSE);
965 }
966 }
967
968 argc -= optind;
969 argv += optind;
970
971 /* check number of arguments */
972 if (argc == 0) {
973 (void) fprintf(stderr, gettext("missing path argument\n"));
974 usage(B_FALSE);
975 }
976 if (argc > 1) {
977 (void) fprintf(stderr, gettext("too many arguments\n"));
978 usage(B_FALSE);
979 }
980
45d1cae3
BB		 981 if (cb.cb_defer_destroy && cb.cb_doclones)
982 usage(B_FALSE);
983
34dc7c2f
BB		 984 /*
985 * If we are doing recursive destroy of a snapshot, then the
986 * named snapshot may not exist. Go straight to libzfs.
987 */
988 if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) {
989 int ret;
990
991 *cp = '\0';
992 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
993 return (1);
994 *cp = '@';
995 cp++;
996
997 if (cb.cb_doclones) {
998 cb.cb_snapname = cp;
999 if (destroy_snap_clones(zhp, &cb) != 0) {
1000 zfs_close(zhp);
1001 return (1);
1002 }
1003 }
1004
45d1cae3 1005 ret = zfs_destroy_snaps(zhp, cp, cb.cb_defer_destroy);
34dc7c2f
BB		 1006 zfs_close(zhp);
1007 if (ret) {
1008 (void) fprintf(stderr,
1009 gettext("no snapshots destroyed\n"));
1010 }
1011 return (ret != 0);
1012 }
1013
34dc7c2f
BB		 1014 /* Open the given dataset */
1015 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
1016 return (1);
1017
1018 cb.cb_target = zhp;
1019
1020 /*
1021 * Perform an explicit check for pools before going any further.
1022 */
1023 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1024 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1025 (void) fprintf(stderr, gettext("cannot destroy '%s': "
1026 "operation does not apply to pools\n"),
1027 zfs_get_name(zhp));
1028 (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1029 "%s' to destroy all datasets in the pool\n"),
1030 zfs_get_name(zhp));
1031 (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1032 "to destroy the pool itself\n"), zfs_get_name(zhp));
1033 zfs_close(zhp);
1034 return (1);
1035 }
1036
1037 /*
1038 * Check for any dependents and/or clones.
1039 */
1040 cb.cb_first = B_TRUE;
45d1cae3 1041 if (!cb.cb_doclones && !cb.cb_defer_destroy &&
34dc7c2f
BB		 1042 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1043 &cb) != 0) {
1044 zfs_close(zhp);
1045 return (1);
1046 }
1047
45d1cae3
BB		 1048 if (cb.cb_error || (!cb.cb_defer_destroy &&
1049 (zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0))) {
34dc7c2f
BB		 1050 zfs_close(zhp);
1051 return (1);
1052 }
1053
1054 /*
1055 * Do the real thing. The callback will close the handle regardless of
1056 * whether it succeeds or not.
1057 */
1058
1059 if (destroy_callback(zhp, &cb) != 0)
1060 return (1);
1061
34dc7c2f
BB		 1062 return (0);
1063}
1064
1065/*
1066 * zfs get [-rHp] [-o field[,field]...] [-s source[,source]...]
1067 * < all | property[,property]... > < fs | snap | vol > ...
1068 *
1069 * -r recurse over any child datasets
1070 * -H scripted mode. Headers are stripped, and fields are separated
1071 * by tabs instead of spaces.
1072 * -o Set of fields to display. One of "name,property,value,source".
1073 * Default is all four.
1074 * -s Set of sources to allow. One of
1075 * "local,default,inherited,temporary,none". Default is all
1076 * five.
1077 * -p Display values in parsable (literal) format.
1078 *
1079 * Prints properties for the given datasets. The user can control which
1080 * columns to display as well as which property types to allow.
1081 */
1082
1083/*
1084 * Invoked to display the properties for a single dataset.
1085 */
1086static int
1087get_callback(zfs_handle_t *zhp, void *data)
1088{
1089 char buf[ZFS_MAXPROPLEN];
1090 zprop_source_t sourcetype;
1091 char source[ZFS_MAXNAMELEN];
1092 zprop_get_cbdata_t *cbp = data;
1093 nvlist_t *userprop = zfs_get_user_props(zhp);
1094 zprop_list_t *pl = cbp->cb_proplist;
1095 nvlist_t *propval;
1096 char *strval;
1097 char *sourceval;
1098
1099 for (; pl != NULL; pl = pl->pl_next) {
1100 /*
1101 * Skip the special fake placeholder. This will also skip over
1102 * the name property when 'all' is specified.
1103 */
1104 if (pl->pl_prop == ZFS_PROP_NAME &&
1105 pl == cbp->cb_proplist)
1106 continue;
1107
1108 if (pl->pl_prop != ZPROP_INVAL) {
1109 if (zfs_prop_get(zhp, pl->pl_prop, buf,
1110 sizeof (buf), &sourcetype, source,
1111 sizeof (source),
1112 cbp->cb_literal) != 0) {
1113 if (pl->pl_all)
1114 continue;
1115 if (!zfs_prop_valid_for_type(pl->pl_prop,
1116 ZFS_TYPE_DATASET)) {
1117 (void) fprintf(stderr,
1118 gettext("No such property '%s'\n"),
1119 zfs_prop_to_name(pl->pl_prop));
1120 continue;
1121 }
1122 sourcetype = ZPROP_SRC_NONE;
1123 (void) strlcpy(buf, "-", sizeof (buf));
1124 }
1125
1126 zprop_print_one_property(zfs_get_name(zhp), cbp,
1127 zfs_prop_to_name(pl->pl_prop),
1128 buf, sourcetype, source);
9babb374
BB		 1129 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1130 sourcetype = ZPROP_SRC_LOCAL;
1131
1132 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1133 buf, sizeof (buf), cbp->cb_literal) != 0) {
1134 sourcetype = ZPROP_SRC_NONE;
1135 (void) strlcpy(buf, "-", sizeof (buf));
1136 }
1137
1138 zprop_print_one_property(zfs_get_name(zhp), cbp,
1139 pl->pl_user_prop, buf, sourcetype, source);
34dc7c2f
BB		 1140 } else {
1141 if (nvlist_lookup_nvlist(userprop,
1142 pl->pl_user_prop, &propval) != 0) {
1143 if (pl->pl_all)
1144 continue;
1145 sourcetype = ZPROP_SRC_NONE;
1146 strval = "-";
1147 } else {
1148 verify(nvlist_lookup_string(propval,
1149 ZPROP_VALUE, &strval) == 0);
1150 verify(nvlist_lookup_string(propval,
1151 ZPROP_SOURCE, &sourceval) == 0);
1152
1153 if (strcmp(sourceval,
1154 zfs_get_name(zhp)) == 0) {
1155 sourcetype = ZPROP_SRC_LOCAL;
1156 } else {
1157 sourcetype = ZPROP_SRC_INHERITED;
1158 (void) strlcpy(source,
1159 sourceval, sizeof (source));
1160 }
1161 }
1162
1163 zprop_print_one_property(zfs_get_name(zhp), cbp,
1164 pl->pl_user_prop, strval, sourcetype,
1165 source);
1166 }
1167 }
1168
1169 return (0);
1170}
1171
1172static int
1173zfs_do_get(int argc, char **argv)
1174{
1175 zprop_get_cbdata_t cb = { 0 };
b128c09f 1176 int i, c, flags = 0;
34dc7c2f
BB		 1177 char *value, *fields;
1178 int ret;
9babb374 1179 int limit = 0;
34dc7c2f
BB		 1180 zprop_list_t fake_name = { 0 };
1181
1182 /*
1183 * Set up default columns and sources.
1184 */
1185 cb.cb_sources = ZPROP_SRC_ALL;
1186 cb.cb_columns[0] = GET_COL_NAME;
1187 cb.cb_columns[1] = GET_COL_PROPERTY;
1188 cb.cb_columns[2] = GET_COL_VALUE;
1189 cb.cb_columns[3] = GET_COL_SOURCE;
1190 cb.cb_type = ZFS_TYPE_DATASET;
1191
1192 /* check options */
9babb374 1193 while ((c = getopt(argc, argv, ":d:o:s:rHp")) != -1) {
34dc7c2f
BB		 1194 switch (c) {
1195 case 'p':
1196 cb.cb_literal = B_TRUE;
1197 break;
9babb374
BB		 1198 case 'd':
1199 limit = parse_depth(optarg, &flags);
1200 break;
34dc7c2f 1201 case 'r':
b128c09f 1202 flags |= ZFS_ITER_RECURSE;
34dc7c2f
BB		 1203 break;
1204 case 'H':
1205 cb.cb_scripted = B_TRUE;
1206 break;
1207 case ':':
1208 (void) fprintf(stderr, gettext("missing argument for "
1209 "'%c' option\n"), optopt);
1210 usage(B_FALSE);
1211 break;
1212 case 'o':
1213 /*
1214 * Process the set of columns to display. We zero out
1215 * the structure to give us a blank slate.
1216 */
1217 bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1218 i = 0;
1219 while (*optarg != '\0') {
1220 static char *col_subopts[] =
1221 { "name", "property", "value", "source",
1222 NULL };
1223
1224 if (i == 4) {
1225 (void) fprintf(stderr, gettext("too "
1226 "many fields given to -o "
1227 "option\n"));
1228 usage(B_FALSE);
1229 }
1230
1231 switch (getsubopt(&optarg, col_subopts,
1232 &value)) {
1233 case 0:
1234 cb.cb_columns[i++] = GET_COL_NAME;
1235 break;
1236 case 1:
1237 cb.cb_columns[i++] = GET_COL_PROPERTY;
1238 break;
1239 case 2:
1240 cb.cb_columns[i++] = GET_COL_VALUE;
1241 break;
1242 case 3:
1243 cb.cb_columns[i++] = GET_COL_SOURCE;
1244 break;
1245 default:
1246 (void) fprintf(stderr,
1247 gettext("invalid column name "
1248 "'%s'\n"), value);
1249 usage(B_FALSE);
1250 }
1251 }
1252 break;
1253
1254 case 's':
1255 cb.cb_sources = 0;
1256 while (*optarg != '\0') {
1257 static char *source_subopts[] = {
1258 "local", "default", "inherited",
1259 "temporary", "none", NULL };
1260
1261 switch (getsubopt(&optarg, source_subopts,
1262 &value)) {
1263 case 0:
1264 cb.cb_sources |= ZPROP_SRC_LOCAL;
1265 break;
1266 case 1:
1267 cb.cb_sources |= ZPROP_SRC_DEFAULT;
1268 break;
1269 case 2:
1270 cb.cb_sources |= ZPROP_SRC_INHERITED;
1271 break;
1272 case 3:
1273 cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1274 break;
1275 case 4:
1276 cb.cb_sources |= ZPROP_SRC_NONE;
1277 break;
1278 default:
1279 (void) fprintf(stderr,
1280 gettext("invalid source "
1281 "'%s'\n"), value);
1282 usage(B_FALSE);
1283 }
1284 }
1285 break;
1286
1287 case '?':
1288 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1289 optopt);
1290 usage(B_FALSE);
1291 }
1292 }
1293
1294 argc -= optind;
1295 argv += optind;
1296
1297 if (argc < 1) {
1298 (void) fprintf(stderr, gettext("missing property "
1299 "argument\n"));
1300 usage(B_FALSE);
1301 }
1302
1303 fields = argv[0];
1304
1305 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1306 != 0)
1307 usage(B_FALSE);
1308
1309 argc--;
1310 argv++;
1311
1312 /*
1313 * As part of zfs_expand_proplist(), we keep track of the maximum column
1314 * width for each property. For the 'NAME' (and 'SOURCE') columns, we
1315 * need to know the maximum name length. However, the user likely did
1316 * not specify 'name' as one of the properties to fetch, so we need to
1317 * make sure we always include at least this property for
1318 * print_get_headers() to work properly.
1319 */
1320 if (cb.cb_proplist != NULL) {
1321 fake_name.pl_prop = ZFS_PROP_NAME;
1322 fake_name.pl_width = strlen(gettext("NAME"));
1323 fake_name.pl_next = cb.cb_proplist;
1324 cb.cb_proplist = &fake_name;
1325 }
1326
1327 cb.cb_first = B_TRUE;
1328
1329 /* run for each object */
b128c09f 1330 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, NULL,
9babb374 1331 &cb.cb_proplist, limit, get_callback, &cb);
34dc7c2f
BB		 1332
1333 if (cb.cb_proplist == &fake_name)
1334 zprop_free_list(fake_name.pl_next);
1335 else
1336 zprop_free_list(cb.cb_proplist);
1337
1338 return (ret);
1339}
1340
1341/*
1342 * inherit [-r] <property> <fs|vol> ...
1343 *
1344 * -r Recurse over all children
1345 *
1346 * For each dataset specified on the command line, inherit the given property
1347 * from its parent. Inheriting a property at the pool level will cause it to
1348 * use the default value. The '-r' flag will recurse over all children, and is
1349 * useful for setting a property on a hierarchy-wide basis, regardless of any
1350 * local modifications for each dataset.
1351 */
1352
1353static int
b128c09f 1354inherit_recurse_cb(zfs_handle_t *zhp, void *data)
34dc7c2f
BB		 1355{
1356 char *propname = data;
b128c09f 1357 zfs_prop_t prop = zfs_name_to_prop(propname);
34dc7c2f 1358
b128c09f
BB		 1359 /*
1360 * If we're doing it recursively, then ignore properties that
1361 * are not valid for this type of dataset.
1362 */
1363 if (prop != ZPROP_INVAL &&
1364 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1365 return (0);
1366
1367 return (zfs_prop_inherit(zhp, propname) != 0);
1368}
1369
1370static int
1371inherit_cb(zfs_handle_t *zhp, void *data)
1372{
1373 char *propname = data;
1374
1375 return (zfs_prop_inherit(zhp, propname) != 0);
34dc7c2f
BB		 1376}
1377
1378static int
1379zfs_do_inherit(int argc, char **argv)
1380{
34dc7c2f
BB		 1381 int c;
1382 zfs_prop_t prop;
1383 char *propname;
1384 int ret;
b128c09f 1385 int flags = 0;
34dc7c2f
BB		 1386
1387 /* check options */
1388 while ((c = getopt(argc, argv, "r")) != -1) {
1389 switch (c) {
1390 case 'r':
b128c09f 1391 flags |= ZFS_ITER_RECURSE;
34dc7c2f
BB		 1392 break;
1393 case '?':
1394 default:
1395 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1396 optopt);
1397 usage(B_FALSE);
1398 }
1399 }
1400
1401 argc -= optind;
1402 argv += optind;
1403
1404 /* check number of arguments */
1405 if (argc < 1) {
1406 (void) fprintf(stderr, gettext("missing property argument\n"));
1407 usage(B_FALSE);
1408 }
1409 if (argc < 2) {
1410 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1411 usage(B_FALSE);
1412 }
1413
1414 propname = argv[0];
1415 argc--;
1416 argv++;
1417
1418 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1419 if (zfs_prop_readonly(prop)) {
1420 (void) fprintf(stderr, gettext(
1421 "%s property is read-only\n"),
1422 propname);
1423 return (1);
1424 }
1425 if (!zfs_prop_inheritable(prop)) {
1426 (void) fprintf(stderr, gettext("'%s' property cannot "
1427 "be inherited\n"), propname);
1428 if (prop == ZFS_PROP_QUOTA ||
1429 prop == ZFS_PROP_RESERVATION ||
1430 prop == ZFS_PROP_REFQUOTA ||
1431 prop == ZFS_PROP_REFRESERVATION)
1432 (void) fprintf(stderr, gettext("use 'zfs set "
1433 "%s=none' to clear\n"), propname);
1434 return (1);
1435 }
1436 } else if (!zfs_prop_user(propname)) {
1437 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1438 propname);
1439 usage(B_FALSE);
1440 }
1441
b128c09f
BB		 1442 if (flags & ZFS_ITER_RECURSE) {
1443 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
9babb374 1444 NULL, NULL, 0, inherit_recurse_cb, propname);
b128c09f
BB		 1445 } else {
1446 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
9babb374 1447 NULL, NULL, 0, inherit_cb, propname);
b128c09f 1448 }
34dc7c2f
BB		 1449
1450 return (ret);
1451}
1452
1453typedef struct upgrade_cbdata {
1454 uint64_t cb_numupgraded;
1455 uint64_t cb_numsamegraded;
1456 uint64_t cb_numfailed;
1457 uint64_t cb_version;
1458 boolean_t cb_newer;
1459 boolean_t cb_foundone;
1460 char cb_lastfs[ZFS_MAXNAMELEN];
1461} upgrade_cbdata_t;
1462
1463static int
1464same_pool(zfs_handle_t *zhp, const char *name)
1465{
1466 int len1 = strcspn(name, "/@");
1467 const char *zhname = zfs_get_name(zhp);
1468 int len2 = strcspn(zhname, "/@");
1469
1470 if (len1 != len2)
1471 return (B_FALSE);
1472 return (strncmp(name, zhname, len1) == 0);
1473}
1474
1475static int
1476upgrade_list_callback(zfs_handle_t *zhp, void *data)
1477{
1478 upgrade_cbdata_t *cb = data;
1479 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1480
1481 /* list if it's old/new */
1482 if ((!cb->cb_newer && version < ZPL_VERSION) ||
1483 (cb->cb_newer && version > ZPL_VERSION)) {
1484 char *str;
1485 if (cb->cb_newer) {
1486 str = gettext("The following filesystems are "
1487 "formatted using a newer software version and\n"
1488 "cannot be accessed on the current system.\n\n");
1489 } else {
1490 str = gettext("The following filesystems are "
1491 "out of date, and can be upgraded. After being\n"
1492 "upgraded, these filesystems (and any 'zfs send' "
1493 "streams generated from\n"
1494 "subsequent snapshots) will no longer be "
1495 "accessible by older software versions.\n\n");
1496 }
1497
1498 if (!cb->cb_foundone) {
1499 (void) puts(str);
1500 (void) printf(gettext("VER FILESYSTEM\n"));
1501 (void) printf(gettext("--- ------------\n"));
1502 cb->cb_foundone = B_TRUE;
1503 }
1504
1505 (void) printf("%2u %s\n", version, zfs_get_name(zhp));
1506 }
1507
1508 return (0);
1509}
1510
1511static int
1512upgrade_set_callback(zfs_handle_t *zhp, void *data)
1513{
1514 upgrade_cbdata_t *cb = data;
1515 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
9babb374
BB		 1516 int i;
1517 static struct { int zplver; int spaver; } table[] = {
1518 {ZPL_VERSION_FUID, SPA_VERSION_FUID},
1519 {ZPL_VERSION_USERSPACE, SPA_VERSION_USERSPACE},
1520 {0, 0}
1521 };
1522
1523
1524 for (i = 0; table[i].zplver; i++) {
1525 if (cb->cb_version >= table[i].zplver) {
1526 int spa_version;
1527
1528 if (zfs_spa_version(zhp, &spa_version) < 0)
1529 return (-1);
1530
1531 if (spa_version < table[i].spaver) {
1532 /* can't upgrade */
1533 (void) printf(gettext("%s: can not be "
1534 "upgraded; the pool version needs to first "
1535 "be upgraded\nto version %d\n\n"),
1536 zfs_get_name(zhp), table[i].spaver);
1537 cb->cb_numfailed++;
1538 return (0);
1539 }
34dc7c2f
BB		 1540 }
1541 }
1542
1543 /* upgrade */
1544 if (version < cb->cb_version) {
1545 char verstr[16];
1546 (void) snprintf(verstr, sizeof (verstr),
1547 "%llu", cb->cb_version);
1548 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
1549 /*
1550 * If they did "zfs upgrade -a", then we could
1551 * be doing ioctls to different pools. We need
1552 * to log this history once to each pool.
1553 */
1554 verify(zpool_stage_history(g_zfs, history_str) == 0);
1555 }
1556 if (zfs_prop_set(zhp, "version", verstr) == 0)
1557 cb->cb_numupgraded++;
1558 else
1559 cb->cb_numfailed++;
1560 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
1561 } else if (version > cb->cb_version) {
1562 /* can't downgrade */
1563 (void) printf(gettext("%s: can not be downgraded; "
1564 "it is already at version %u\n"),
1565 zfs_get_name(zhp), version);
1566 cb->cb_numfailed++;
1567 } else {
1568 cb->cb_numsamegraded++;
1569 }
1570 return (0);
1571}
1572
1573/*
1574 * zfs upgrade
1575 * zfs upgrade -v
1576 * zfs upgrade [-r] [-V <version>] <-a | filesystem>
1577 */
1578static int
1579zfs_do_upgrade(int argc, char **argv)
1580{
34dc7c2f
BB		 1581 boolean_t all = B_FALSE;
1582 boolean_t showversions = B_FALSE;
1583 int ret;
1584 upgrade_cbdata_t cb = { 0 };
1585 char c;
b128c09f 1586 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
34dc7c2f
BB		 1587
1588 /* check options */
1589 while ((c = getopt(argc, argv, "rvV:a")) != -1) {
1590 switch (c) {
1591 case 'r':
b128c09f 1592 flags |= ZFS_ITER_RECURSE;
34dc7c2f
BB		 1593 break;
1594 case 'v':
1595 showversions = B_TRUE;
1596 break;
1597 case 'V':
1598 if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
1599 optarg, &cb.cb_version) != 0) {
1600 (void) fprintf(stderr,
1601 gettext("invalid version %s\n"), optarg);
1602 usage(B_FALSE);
1603 }
1604 break;
1605 case 'a':
1606 all = B_TRUE;
1607 break;
1608 case '?':
1609 default:
1610 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1611 optopt);
1612 usage(B_FALSE);
1613 }
1614 }
1615
1616 argc -= optind;
1617 argv += optind;
1618
b128c09f 1619 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
34dc7c2f 1620 usage(B_FALSE);
b128c09f
BB		 1621 if (showversions && (flags & ZFS_ITER_RECURSE || all ||
1622 cb.cb_version || argc))
34dc7c2f
BB		 1623 usage(B_FALSE);
1624 if ((all || argc) && (showversions))
1625 usage(B_FALSE);
1626 if (all && argc)
1627 usage(B_FALSE);
1628
1629 if (showversions) {
1630 /* Show info on available versions. */
1631 (void) printf(gettext("The following filesystem versions are "
1632 "supported:\n\n"));
1633 (void) printf(gettext("VER DESCRIPTION\n"));
1634 (void) printf("--- -----------------------------------------"
1635 "---------------\n");
1636 (void) printf(gettext(" 1 Initial ZFS filesystem version\n"));
1637 (void) printf(gettext(" 2 Enhanced directory entries\n"));
1638 (void) printf(gettext(" 3 Case insensitive and File system "
45d1cae3 1639 "unique identifier (FUID)\n"));
9babb374
BB		 1640 (void) printf(gettext(" 4 userquota, groupquota "
1641 "properties\n"));
34dc7c2f
BB		 1642 (void) printf(gettext("\nFor more information on a particular "
1643 "version, including supported releases, see:\n\n"));
1644 (void) printf("http://www.opensolaris.org/os/community/zfs/"
1645 "version/zpl/N\n\n");
1646 (void) printf(gettext("Where 'N' is the version number.\n"));
1647 ret = 0;
1648 } else if (argc || all) {
1649 /* Upgrade filesystems */
1650 if (cb.cb_version == 0)
1651 cb.cb_version = ZPL_VERSION;
b128c09f 1652 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
9babb374 1653 NULL, NULL, 0, upgrade_set_callback, &cb);
34dc7c2f
BB		 1654 (void) printf(gettext("%llu filesystems upgraded\n"),
1655 cb.cb_numupgraded);
1656 if (cb.cb_numsamegraded) {
1657 (void) printf(gettext("%llu filesystems already at "
1658 "this version\n"),
1659 cb.cb_numsamegraded);
1660 }
1661 if (cb.cb_numfailed != 0)
1662 ret = 1;
1663 } else {
1664 /* List old-version filesytems */
1665 boolean_t found;
1666 (void) printf(gettext("This system is currently running "
1667 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
1668
b128c09f
BB		 1669 flags |= ZFS_ITER_RECURSE;
1670 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
9babb374 1671 NULL, NULL, 0, upgrade_list_callback, &cb);
34dc7c2f
BB		 1672
1673 found = cb.cb_foundone;
1674 cb.cb_foundone = B_FALSE;
1675 cb.cb_newer = B_TRUE;
1676
b128c09f 1677 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
9babb374 1678 NULL, NULL, 0, upgrade_list_callback, &cb);
34dc7c2f
BB		 1679
1680 if (!cb.cb_foundone && !found) {
1681 (void) printf(gettext("All filesystems are "
1682 "formatted with the current version.\n"));
1683 }
1684 }
1685
1686 return (ret);
1687}
1688
1689/*
9babb374
BB		 1690 * zfs userspace
1691 */
1692static int
1693userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
1694{
1695 zfs_userquota_prop_t *typep = arg;
1696 zfs_userquota_prop_t p = *typep;
1697 char *name = NULL;
1698 char *ug, *propname;
1699 char namebuf[32];
1700 char sizebuf[32];
1701
1702 if (domain == NULL || domain[0] == '\0') {
1703 if (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) {
1704 struct group *g = getgrgid(rid);
1705 if (g)
1706 name = g->gr_name;
1707 } else {
1708 struct passwd *p = getpwuid(rid);
1709 if (p)
1710 name = p->pw_name;
1711 }
1712 }
1713
1714 if (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA)
1715 ug = "group";
1716 else
1717 ug = "user";
1718
1719 if (p == ZFS_PROP_USERUSED || p == ZFS_PROP_GROUPUSED)
1720 propname = "used";
1721 else
1722 propname = "quota";
1723
1724 if (name == NULL) {
1725 (void) snprintf(namebuf, sizeof (namebuf),
1726 "%llu", (longlong_t)rid);
1727 name = namebuf;
1728 }
1729 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
1730
1731 (void) printf("%s %s %s%c%s %s\n", propname, ug, domain,
1732 domain[0] ? '-' : ' ', name, sizebuf);
1733
1734 return (0);
1735}
1736
1737static int
1738zfs_do_userspace(int argc, char **argv)
1739{
1740 zfs_handle_t *zhp;
1741 zfs_userquota_prop_t p;
1742 int error;
1743
1744 /*
1745 * Try the python version. If the execv fails, we'll continue
1746 * and do a simplistic implementation.
1747 */
1748 (void) execv(pypath, argv-1);
1749
1750 (void) printf("internal error: %s not found\n"
1751 "falling back on built-in implementation, "
1752 "some features will not work\n", pypath);
1753
1754 if ((zhp = zfs_open(g_zfs, argv[argc-1], ZFS_TYPE_DATASET)) == NULL)
1755 return (1);
1756
1757 (void) printf("PROP TYPE NAME VALUE\n");
1758
1759 for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
1760 error = zfs_userspace(zhp, p, userspace_cb, &p);
1761 if (error)
1762 break;
1763 }
1764 return (error);
1765}
1766
1767/*
1768 * list [-r][-d max] [-H] [-o property[,property]...] [-t type[,type]...]
34dc7c2f
BB		 1769 * [-s property [-s property]...] [-S property [-S property]...]
1770 * <dataset> ...
1771 *
1772 * -r Recurse over all children
9babb374 1773 * -d Limit recursion by depth.
34dc7c2f
BB		 1774 * -H Scripted mode; elide headers and separate columns by tabs
1775 * -o Control which fields to display.
1776 * -t Control which object types to display.
1777 * -s Specify sort columns, descending order.
1778 * -S Specify sort columns, ascending order.
1779 *
1780 * When given no arguments, lists all filesystems in the system.
1781 * Otherwise, list the specified datasets, optionally recursing down them if
1782 * '-r' is specified.
1783 */
1784typedef struct list_cbdata {
1785 boolean_t cb_first;
1786 boolean_t cb_scripted;
1787 zprop_list_t *cb_proplist;
1788} list_cbdata_t;
1789
1790/*
1791 * Given a list of columns to display, output appropriate headers for each one.
1792 */
1793static void
1794print_header(zprop_list_t *pl)
1795{
1796 char headerbuf[ZFS_MAXPROPLEN];
1797 const char *header;
1798 int i;
1799 boolean_t first = B_TRUE;
1800 boolean_t right_justify;
1801
1802 for (; pl != NULL; pl = pl->pl_next) {
1803 if (!first) {
1804 (void) printf(" ");
1805 } else {
1806 first = B_FALSE;
1807 }
1808
1809 right_justify = B_FALSE;
1810 if (pl->pl_prop != ZPROP_INVAL) {
1811 header = zfs_prop_column_name(pl->pl_prop);
1812 right_justify = zfs_prop_align_right(pl->pl_prop);
1813 } else {
1814 for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
1815 headerbuf[i] = toupper(pl->pl_user_prop[i]);
1816 headerbuf[i] = '\0';
1817 header = headerbuf;
1818 }
1819
1820 if (pl->pl_next == NULL && !right_justify)
1821 (void) printf("%s", header);
1822 else if (right_justify)
1823 (void) printf("%*s", pl->pl_width, header);
1824 else
1825 (void) printf("%-*s", pl->pl_width, header);
1826 }
1827
1828 (void) printf("\n");
1829}
1830
1831/*
1832 * Given a dataset and a list of fields, print out all the properties according
1833 * to the described layout.
1834 */
1835static void
1836print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted)
1837{
1838 boolean_t first = B_TRUE;
1839 char property[ZFS_MAXPROPLEN];
1840 nvlist_t *userprops = zfs_get_user_props(zhp);
1841 nvlist_t *propval;
1842 char *propstr;
1843 boolean_t right_justify;
1844 int width;
1845
1846 for (; pl != NULL; pl = pl->pl_next) {
1847 if (!first) {
1848 if (scripted)
1849 (void) printf("\t");
1850 else
1851 (void) printf(" ");
1852 } else {
1853 first = B_FALSE;
1854 }
1855
34dc7c2f
BB		 1856 if (pl->pl_prop != ZPROP_INVAL) {
1857 if (zfs_prop_get(zhp, pl->pl_prop, property,
1858 sizeof (property), NULL, NULL, 0, B_FALSE) != 0)
1859 propstr = "-";
1860 else
1861 propstr = property;
1862
1863 right_justify = zfs_prop_align_right(pl->pl_prop);
9babb374
BB		 1864 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1865 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1866 property, sizeof (property), B_FALSE) != 0)
1867 propstr = "-";
1868 else
1869 propstr = property;
1870 right_justify = B_TRUE;
34dc7c2f
BB		 1871 } else {
1872 if (nvlist_lookup_nvlist(userprops,
1873 pl->pl_user_prop, &propval) != 0)
1874 propstr = "-";
1875 else
1876 verify(nvlist_lookup_string(propval,
1877 ZPROP_VALUE, &propstr) == 0);
9babb374 1878 right_justify = B_FALSE;
34dc7c2f
BB		 1879 }
1880
1881 width = pl->pl_width;
1882
1883 /*
1884 * If this is being called in scripted mode, or if this is the
1885 * last column and it is left-justified, don't include a width
1886 * format specifier.
1887 */
1888 if (scripted || (pl->pl_next == NULL && !right_justify))
1889 (void) printf("%s", propstr);
1890 else if (right_justify)
1891 (void) printf("%*s", width, propstr);
1892 else
1893 (void) printf("%-*s", width, propstr);
1894 }
1895
1896 (void) printf("\n");
1897}
1898
1899/*
1900 * Generic callback function to list a dataset or snapshot.
1901 */
1902static int
1903list_callback(zfs_handle_t *zhp, void *data)
1904{
1905 list_cbdata_t *cbp = data;
1906
1907 if (cbp->cb_first) {
1908 if (!cbp->cb_scripted)
1909 print_header(cbp->cb_proplist);
1910 cbp->cb_first = B_FALSE;
1911 }
1912
1913 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted);
1914
1915 return (0);
1916}
1917
1918static int
1919zfs_do_list(int argc, char **argv)
1920{
1921 int c;
34dc7c2f
BB		 1922 boolean_t scripted = B_FALSE;
1923 static char default_fields[] =
1924 "name,used,available,referenced,mountpoint";
d164b209 1925 int types = ZFS_TYPE_DATASET;
b128c09f 1926 boolean_t types_specified = B_FALSE;
34dc7c2f 1927 char *fields = NULL;
34dc7c2f
BB		 1928 list_cbdata_t cb = { 0 };
1929 char *value;
9babb374 1930 int limit = 0;
34dc7c2f 1931 int ret;
34dc7c2f 1932 zfs_sort_column_t *sortcol = NULL;
b128c09f 1933 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
34dc7c2f
BB		 1934
1935 /* check options */
9babb374 1936 while ((c = getopt(argc, argv, ":d:o:rt:Hs:S:")) != -1) {
34dc7c2f
BB		 1937 switch (c) {
1938 case 'o':
1939 fields = optarg;
1940 break;
9babb374
BB		 1941 case 'd':
1942 limit = parse_depth(optarg, &flags);
1943 break;
34dc7c2f 1944 case 'r':
b128c09f 1945 flags |= ZFS_ITER_RECURSE;
34dc7c2f
BB		 1946 break;
1947 case 'H':
1948 scripted = B_TRUE;
1949 break;
1950 case 's':
1951 if (zfs_add_sort_column(&sortcol, optarg,
1952 B_FALSE) != 0) {
1953 (void) fprintf(stderr,
1954 gettext("invalid property '%s'\n"), optarg);
1955 usage(B_FALSE);
1956 }
1957 break;
1958 case 'S':
1959 if (zfs_add_sort_column(&sortcol, optarg,
1960 B_TRUE) != 0) {
1961 (void) fprintf(stderr,
1962 gettext("invalid property '%s'\n"), optarg);
1963 usage(B_FALSE);
1964 }
1965 break;
1966 case 't':
1967 types = 0;
b128c09f
BB		 1968 types_specified = B_TRUE;
1969 flags &= ~ZFS_ITER_PROP_LISTSNAPS;
34dc7c2f 1970 while (*optarg != '\0') {
b128c09f
BB		 1971 static char *type_subopts[] = { "filesystem",
1972 "volume", "snapshot", "all", NULL };
1973
34dc7c2f
BB		 1974 switch (getsubopt(&optarg, type_subopts,
1975 &value)) {
1976 case 0:
1977 types |= ZFS_TYPE_FILESYSTEM;
1978 break;
1979 case 1:
1980 types |= ZFS_TYPE_VOLUME;
1981 break;
1982 case 2:
1983 types |= ZFS_TYPE_SNAPSHOT;
1984 break;
b128c09f
BB		 1985 case 3:
1986 types = ZFS_TYPE_DATASET;
1987 break;
1988
34dc7c2f
BB		 1989 default:
1990 (void) fprintf(stderr,
1991 gettext("invalid type '%s'\n"),
1992 value);
1993 usage(B_FALSE);
1994 }
1995 }
1996 break;
1997 case ':':
1998 (void) fprintf(stderr, gettext("missing argument for "
1999 "'%c' option\n"), optopt);
2000 usage(B_FALSE);
2001 break;
2002 case '?':
2003 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2004 optopt);
2005 usage(B_FALSE);
2006 }
2007 }
2008
2009 argc -= optind;
2010 argv += optind;
2011
2012 if (fields == NULL)
b128c09f
BB		 2013 fields = default_fields;
2014
2015 /*
2016 * If "-o space" and no types were specified, don't display snapshots.
2017 */
2018 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
2019 types &= ~ZFS_TYPE_SNAPSHOT;
34dc7c2f
BB		 2020
2021 /*
2022 * If the user specifies '-o all', the zprop_get_list() doesn't
2023 * normally include the name of the dataset. For 'zfs list', we always
2024 * want this property to be first.
2025 */
2026 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
2027 != 0)
2028 usage(B_FALSE);
2029
2030 cb.cb_scripted = scripted;
2031 cb.cb_first = B_TRUE;
2032
b128c09f 2033 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
9babb374 2034 limit, list_callback, &cb);
34dc7c2f
BB		 2035
2036 zprop_free_list(cb.cb_proplist);
2037 zfs_free_sort_columns(sortcol);
2038
2039 if (ret == 0 && cb.cb_first && !cb.cb_scripted)
2040 (void) printf(gettext("no datasets available\n"));
2041
2042 return (ret);
2043}
2044
2045/*
2046 * zfs rename <fs | snap | vol> <fs | snap | vol>
2047 * zfs rename -p <fs | vol> <fs | vol>
2048 * zfs rename -r <snap> <snap>
2049 *
2050 * Renames the given dataset to another of the same type.
2051 *
2052 * The '-p' flag creates all the non-existing ancestors of the target first.
2053 */
2054/* ARGSUSED */
2055static int
2056zfs_do_rename(int argc, char **argv)
2057{
2058 zfs_handle_t *zhp;
2059 int c;
2060 int ret;
2061 boolean_t recurse = B_FALSE;
2062 boolean_t parents = B_FALSE;
2063
2064 /* check options */
2065 while ((c = getopt(argc, argv, "pr")) != -1) {
2066 switch (c) {
2067 case 'p':
2068 parents = B_TRUE;
2069 break;
2070 case 'r':
2071 recurse = B_TRUE;
2072 break;
2073 case '?':
2074 default:
2075 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2076 optopt);
2077 usage(B_FALSE);
2078 }
2079 }
2080
2081 argc -= optind;
2082 argv += optind;
2083
2084 /* check number of arguments */
2085 if (argc < 1) {
2086 (void) fprintf(stderr, gettext("missing source dataset "
2087 "argument\n"));
2088 usage(B_FALSE);
2089 }
2090 if (argc < 2) {
2091 (void) fprintf(stderr, gettext("missing target dataset "
2092 "argument\n"));
2093 usage(B_FALSE);
2094 }
2095 if (argc > 2) {
2096 (void) fprintf(stderr, gettext("too many arguments\n"));
2097 usage(B_FALSE);
2098 }
2099
2100 if (recurse && parents) {
2101 (void) fprintf(stderr, gettext("-p and -r options are mutually "
2102 "exclusive\n"));
2103 usage(B_FALSE);
2104 }
2105
2106 if (recurse && strchr(argv[0], '@') == 0) {
2107 (void) fprintf(stderr, gettext("source dataset for recursive "
2108 "rename must be a snapshot\n"));
2109 usage(B_FALSE);
2110 }
2111
2112 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM |
2113 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL)
2114 return (1);
2115
2116 /* If we were asked and the name looks good, try to create ancestors. */
2117 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
2118 zfs_create_ancestors(g_zfs, argv[1]) != 0) {
2119 zfs_close(zhp);
2120 return (1);
2121 }
2122
2123 ret = (zfs_rename(zhp, argv[1], recurse) != 0);
2124
2125 zfs_close(zhp);
2126 return (ret);
2127}
2128
2129/*
2130 * zfs promote <fs>
2131 *
2132 * Promotes the given clone fs to be the parent
2133 */
2134/* ARGSUSED */
2135static int
2136zfs_do_promote(int argc, char **argv)
2137{
2138 zfs_handle_t *zhp;
2139 int ret;
2140
2141 /* check options */
2142 if (argc > 1 && argv[1][0] == '-') {
2143 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2144 argv[1][1]);
2145 usage(B_FALSE);
2146 }
2147
2148 /* check number of arguments */
2149 if (argc < 2) {
2150 (void) fprintf(stderr, gettext("missing clone filesystem"
2151 " argument\n"));
2152 usage(B_FALSE);
2153 }
2154 if (argc > 2) {
2155 (void) fprintf(stderr, gettext("too many arguments\n"));
2156 usage(B_FALSE);
2157 }
2158
2159 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
2160 if (zhp == NULL)
2161 return (1);
2162
2163 ret = (zfs_promote(zhp) != 0);
2164
2165
2166 zfs_close(zhp);
2167 return (ret);
2168}
2169
2170/*
2171 * zfs rollback [-rRf] <snapshot>
2172 *
2173 * -r Delete any intervening snapshots before doing rollback
2174 * -R Delete any snapshots and their clones
2175 * -f ignored for backwards compatability
2176 *
2177 * Given a filesystem, rollback to a specific snapshot, discarding any changes
2178 * since then and making it the active dataset. If more recent snapshots exist,
2179 * the command will complain unless the '-r' flag is given.
2180 */
2181typedef struct rollback_cbdata {
2182 uint64_t cb_create;
2183 boolean_t cb_first;
2184 int cb_doclones;
2185 char *cb_target;
2186 int cb_error;
2187 boolean_t cb_recurse;
2188 boolean_t cb_dependent;
2189} rollback_cbdata_t;
2190
2191/*
2192 * Report any snapshots more recent than the one specified. Used when '-r' is
2193 * not specified. We reuse this same callback for the snapshot dependents - if
2194 * 'cb_dependent' is set, then this is a dependent and we should report it
2195 * without checking the transaction group.
2196 */
2197static int
2198rollback_check(zfs_handle_t *zhp, void *data)
2199{
2200 rollback_cbdata_t *cbp = data;
2201
2202 if (cbp->cb_doclones) {
2203 zfs_close(zhp);
2204 return (0);
2205 }
2206
2207 if (!cbp->cb_dependent) {
2208 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 &&
2209 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT &&
2210 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) >
2211 cbp->cb_create) {
2212
2213 if (cbp->cb_first && !cbp->cb_recurse) {
2214 (void) fprintf(stderr, gettext("cannot "
2215 "rollback to '%s': more recent snapshots "
2216 "exist\n"),
2217 cbp->cb_target);
2218 (void) fprintf(stderr, gettext("use '-r' to "
2219 "force deletion of the following "
2220 "snapshots:\n"));
2221 cbp->cb_first = 0;
2222 cbp->cb_error = 1;
2223 }
2224
2225 if (cbp->cb_recurse) {
2226 cbp->cb_dependent = B_TRUE;
2227 if (zfs_iter_dependents(zhp, B_TRUE,
2228 rollback_check, cbp) != 0) {
2229 zfs_close(zhp);
2230 return (-1);
2231 }
2232 cbp->cb_dependent = B_FALSE;
2233 } else {
2234 (void) fprintf(stderr, "%s\n",
2235 zfs_get_name(zhp));
2236 }
2237 }
2238 } else {
2239 if (cbp->cb_first && cbp->cb_recurse) {
2240 (void) fprintf(stderr, gettext("cannot rollback to "
2241 "'%s': clones of previous snapshots exist\n"),
2242 cbp->cb_target);
2243 (void) fprintf(stderr, gettext("use '-R' to "
2244 "force deletion of the following clones and "
2245 "dependents:\n"));
2246 cbp->cb_first = 0;
2247 cbp->cb_error = 1;
2248 }
2249
2250 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
2251 }
2252
2253 zfs_close(zhp);
2254 return (0);
2255}
2256
2257static int
2258zfs_do_rollback(int argc, char **argv)
2259{
2260 int ret;
2261 int c;
2262 boolean_t force = B_FALSE;
2263 rollback_cbdata_t cb = { 0 };
2264 zfs_handle_t *zhp, *snap;
2265 char parentname[ZFS_MAXNAMELEN];
2266 char *delim;
2267
2268 /* check options */
2269 while ((c = getopt(argc, argv, "rRf")) != -1) {
2270 switch (c) {
2271 case 'r':
2272 cb.cb_recurse = 1;
2273 break;
2274 case 'R':
2275 cb.cb_recurse = 1;
2276 cb.cb_doclones = 1;
2277 break;
2278 case 'f':
2279 force = B_TRUE;
2280 break;
2281 case '?':
2282 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2283 optopt);
2284 usage(B_FALSE);
2285 }
2286 }
2287
2288 argc -= optind;
2289 argv += optind;
2290
2291 /* check number of arguments */
2292 if (argc < 1) {
2293 (void) fprintf(stderr, gettext("missing dataset argument\n"));
2294 usage(B_FALSE);
2295 }
2296 if (argc > 1) {
2297 (void) fprintf(stderr, gettext("too many arguments\n"));
2298 usage(B_FALSE);
2299 }
2300
2301 /* open the snapshot */
2302 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
2303 return (1);
2304
2305 /* open the parent dataset */
2306 (void) strlcpy(parentname, argv[0], sizeof (parentname));
2307 verify((delim = strrchr(parentname, '@')) != NULL);
2308 *delim = '\0';
2309 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
2310 zfs_close(snap);
2311 return (1);
2312 }
2313
2314 /*
2315 * Check for more recent snapshots and/or clones based on the presence
2316 * of '-r' and '-R'.
2317 */
2318 cb.cb_target = argv[0];
2319 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
2320 cb.cb_first = B_TRUE;
2321 cb.cb_error = 0;
2322 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0)
2323 goto out;
2324
2325 if ((ret = cb.cb_error) != 0)
2326 goto out;
2327
2328 /*
2329 * Rollback parent to the given snapshot.
2330 */
2331 ret = zfs_rollback(zhp, snap, force);
2332
2333out:
2334 zfs_close(snap);
2335 zfs_close(zhp);
2336
2337 if (ret == 0)
2338 return (0);
2339 else
2340 return (1);
2341}
2342
2343/*
2344 * zfs set property=value { fs | snap | vol } ...
2345 *
2346 * Sets the given property for all datasets specified on the command line.
2347 */
2348typedef struct set_cbdata {
2349 char *cb_propname;
2350 char *cb_value;
2351} set_cbdata_t;
2352
2353static int
2354set_callback(zfs_handle_t *zhp, void *data)
2355{
2356 set_cbdata_t *cbp = data;
2357
2358 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) {
2359 switch (libzfs_errno(g_zfs)) {
2360 case EZFS_MOUNTFAILED:
2361 (void) fprintf(stderr, gettext("property may be set "
2362 "but unable to remount filesystem\n"));
2363 break;
2364 case EZFS_SHARENFSFAILED:
2365 (void) fprintf(stderr, gettext("property may be set "
2366 "but unable to reshare filesystem\n"));
2367 break;
2368 }
2369 return (1);
2370 }
2371 return (0);
2372}
2373
2374static int
2375zfs_do_set(int argc, char **argv)
2376{
2377 set_cbdata_t cb;
2378 int ret;
2379
2380 /* check for options */
2381 if (argc > 1 && argv[1][0] == '-') {
2382 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2383 argv[1][1]);
2384 usage(B_FALSE);
2385 }
2386
2387 /* check number of arguments */
2388 if (argc < 2) {
2389 (void) fprintf(stderr, gettext("missing property=value "
2390 "argument\n"));
2391 usage(B_FALSE);
2392 }
2393 if (argc < 3) {
2394 (void) fprintf(stderr, gettext("missing dataset name\n"));
2395 usage(B_FALSE);
2396 }
2397
2398 /* validate property=value argument */
2399 cb.cb_propname = argv[1];
b128c09f
BB		 2400 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) ||
2401 (cb.cb_value[1] == '\0')) {
34dc7c2f
BB		 2402 (void) fprintf(stderr, gettext("missing value in "
2403 "property=value argument\n"));
2404 usage(B_FALSE);
2405 }
2406
2407 *cb.cb_value = '\0';
2408 cb.cb_value++;
2409
2410 if (*cb.cb_propname == '\0') {
2411 (void) fprintf(stderr,
2412 gettext("missing property in property=value argument\n"));
2413 usage(B_FALSE);
2414 }
2415
b128c09f 2416 ret = zfs_for_each(argc - 2, argv + 2, NULL,
9babb374 2417 ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, &cb);
34dc7c2f
BB		 2418
2419 return (ret);
2420}
2421
2422/*
b128c09f 2423 * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
34dc7c2f
BB		 2424 *
2425 * Creates a snapshot with the given name. While functionally equivalent to
2426 * 'zfs create', it is a separate command to differentiate intent.
2427 */
2428static int
2429zfs_do_snapshot(int argc, char **argv)
2430{
2431 boolean_t recursive = B_FALSE;
2432 int ret;
2433 char c;
b128c09f
BB		 2434 nvlist_t *props;
2435
2436 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
2437 (void) fprintf(stderr, gettext("internal error: "
2438 "out of memory\n"));
2439 return (1);
2440 }
34dc7c2f
BB		 2441
2442 /* check options */
b128c09f 2443 while ((c = getopt(argc, argv, "ro:")) != -1) {
34dc7c2f 2444 switch (c) {
b128c09f
BB		 2445 case 'o':
2446 if (parseprop(props))
2447 return (1);
2448 break;
34dc7c2f
BB		 2449 case 'r':
2450 recursive = B_TRUE;
2451 break;
2452 case '?':
2453 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2454 optopt);
b128c09f 2455 goto usage;
34dc7c2f
BB		 2456 }
2457 }
2458
2459 argc -= optind;
2460 argv += optind;
2461
2462 /* check number of arguments */
2463 if (argc < 1) {
2464 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
b128c09f 2465 goto usage;
34dc7c2f
BB		 2466 }
2467 if (argc > 1) {
2468 (void) fprintf(stderr, gettext("too many arguments\n"));
b128c09f 2469 goto usage;
34dc7c2f
BB		 2470 }
2471
b128c09f
BB		 2472 ret = zfs_snapshot(g_zfs, argv[0], recursive, props);
2473 nvlist_free(props);
34dc7c2f
BB		 2474 if (ret && recursive)
2475 (void) fprintf(stderr, gettext("no snapshots were created\n"));
2476 return (ret != 0);
b128c09f
BB		 2477
2478usage:
2479 nvlist_free(props);
2480 usage(B_FALSE);
2481 return (-1);
34dc7c2f
BB		 2482}
2483
2484/*
2485 * zfs send [-v] -R [-i|-I <@snap>] <fs@snap>
2486 * zfs send [-v] [-i|-I <@snap>] <fs@snap>
2487 *
2488 * Send a backup stream to stdout.
2489 */
2490static int
2491zfs_do_send(int argc, char **argv)
2492{
2493 char *fromname = NULL;
2494 char *toname = NULL;
2495 char *cp;
2496 zfs_handle_t *zhp;
2497 boolean_t doall = B_FALSE;
2498 boolean_t replicate = B_FALSE;
2499 boolean_t fromorigin = B_FALSE;
2500 boolean_t verbose = B_FALSE;
2501 int c, err;
2502
2503 /* check options */
2504 while ((c = getopt(argc, argv, ":i:I:Rv")) != -1) {
2505 switch (c) {
2506 case 'i':
2507 if (fromname)
2508 usage(B_FALSE);
2509 fromname = optarg;
2510 break;
2511 case 'I':
2512 if (fromname)
2513 usage(B_FALSE);
2514 fromname = optarg;
2515 doall = B_TRUE;
2516 break;
2517 case 'R':
2518 replicate = B_TRUE;
2519 break;
2520 case 'v':
2521 verbose = B_TRUE;
2522 break;
2523 case ':':
2524 (void) fprintf(stderr, gettext("missing argument for "
2525 "'%c' option\n"), optopt);
2526 usage(B_FALSE);
2527 break;
2528 case '?':
2529 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2530 optopt);
2531 usage(B_FALSE);
2532 }
2533 }
2534
2535 argc -= optind;
2536 argv += optind;
2537
2538 /* check number of arguments */
2539 if (argc < 1) {
2540 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
2541 usage(B_FALSE);
2542 }
2543 if (argc > 1) {
2544 (void) fprintf(stderr, gettext("too many arguments\n"));
2545 usage(B_FALSE);
2546 }
2547
2548 if (isatty(STDOUT_FILENO)) {
2549 (void) fprintf(stderr,
2550 gettext("Error: Stream can not be written to a terminal.\n"
2551 "You must redirect standard output.\n"));
2552 return (1);
2553 }
2554
2555 cp = strchr(argv[0], '@');
2556 if (cp == NULL) {
2557 (void) fprintf(stderr,
2558 gettext("argument must be a snapshot\n"));
2559 usage(B_FALSE);
2560 }
2561 *cp = '\0';
2562 toname = cp + 1;
2563 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
2564 if (zhp == NULL)
2565 return (1);
2566
2567 /*
2568 * If they specified the full path to the snapshot, chop off
2569 * everything except the short name of the snapshot, but special
2570 * case if they specify the origin.
2571 */
2572 if (fromname && (cp = strchr(fromname, '@')) != NULL) {
2573 char origin[ZFS_MAXNAMELEN];
2574 zprop_source_t src;
2575
2576 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
2577 origin, sizeof (origin), &src, NULL, 0, B_FALSE);
2578
2579 if (strcmp(origin, fromname) == 0) {
2580 fromname = NULL;
2581 fromorigin = B_TRUE;
2582 } else {
2583 *cp = '\0';
2584 if (cp != fromname && strcmp(argv[0], fromname)) {
2585 (void) fprintf(stderr,
2586 gettext("incremental source must be "
2587 "in same filesystem\n"));
2588 usage(B_FALSE);
2589 }
2590 fromname = cp + 1;
2591 if (strchr(fromname, '@') || strchr(fromname, '/')) {
2592 (void) fprintf(stderr,
2593 gettext("invalid incremental source\n"));
2594 usage(B_FALSE);
2595 }
2596 }
2597 }
2598
2599 if (replicate && fromname == NULL)
2600 doall = B_TRUE;
2601
2602 err = zfs_send(zhp, fromname, toname, replicate, doall, fromorigin,
2603 verbose, STDOUT_FILENO);
2604 zfs_close(zhp);
2605
2606 return (err != 0);
2607}
2608
2609/*
2610 * zfs receive [-dnvF] <fs@snap>
2611 *
2612 * Restore a backup stream from stdin.
2613 */
2614static int
2615zfs_do_receive(int argc, char **argv)
2616{
2617 int c, err;
2618 recvflags_t flags;
2619
2620 bzero(&flags, sizeof (recvflags_t));
2621 /* check options */
d164b209 2622 while ((c = getopt(argc, argv, ":dnuvF")) != -1) {
34dc7c2f
BB		 2623 switch (c) {
2624 case 'd':
2625 flags.isprefix = B_TRUE;
2626 break;
2627 case 'n':
2628 flags.dryrun = B_TRUE;
2629 break;
d164b209
BB		 2630 case 'u':
2631 flags.nomount = B_TRUE;
2632 break;
34dc7c2f
BB		 2633 case 'v':
2634 flags.verbose = B_TRUE;
2635 break;
2636 case 'F':
2637 flags.force = B_TRUE;
2638 break;
2639 case ':':
2640 (void) fprintf(stderr, gettext("missing argument for "
2641 "'%c' option\n"), optopt);
2642 usage(B_FALSE);
2643 break;
2644 case '?':
2645 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2646 optopt);
2647 usage(B_FALSE);
2648 }
2649 }
2650
2651 argc -= optind;
2652 argv += optind;
2653
2654 /* check number of arguments */
2655 if (argc < 1) {
2656 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
2657 usage(B_FALSE);
2658 }
2659 if (argc > 1) {
2660 (void) fprintf(stderr, gettext("too many arguments\n"));
2661 usage(B_FALSE);
2662 }
2663
2664 if (isatty(STDIN_FILENO)) {
2665 (void) fprintf(stderr,
2666 gettext("Error: Backup stream can not be read "
2667 "from a terminal.\n"
2668 "You must redirect standard input.\n"));
2669 return (1);
2670 }
2671
2672 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL);
2673
2674 return (err != 0);
2675}
2676
45d1cae3
BB		 2677static int
2678zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
2679{
2680 int errors = 0;
2681 int i;
2682 const char *tag;
2683 boolean_t recursive = B_FALSE;
2684 int c;
2685 int (*func)(zfs_handle_t *, const char *, const char *, boolean_t);
2686
2687 /* check options */
2688 while ((c = getopt(argc, argv, "r")) != -1) {
2689 switch (c) {
2690 case 'r':
2691 recursive = B_TRUE;
2692 break;
2693 case '?':
2694 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2695 optopt);
2696 usage(B_FALSE);
2697 }
2698 }
2699
2700 argc -= optind;
2701 argv += optind;
2702
2703 /* check number of arguments */
2704 if (argc < 2)
2705 usage(B_FALSE);
2706
2707 tag = argv[0];
2708 --argc;
2709 ++argv;
2710
2711 if (holding) {
2712 if (tag[0] == '.') {
2713 /* tags starting with '.' are reserved for libzfs */
2714 (void) fprintf(stderr,
2715 gettext("tag may not start with '.'\n"));
2716 usage(B_FALSE);
2717 }
2718 func = zfs_hold;
2719 } else {
2720 func = zfs_release;
2721 }
2722
2723 for (i = 0; i < argc; ++i) {
2724 zfs_handle_t *zhp;
2725 char parent[ZFS_MAXNAMELEN];
2726 const char *delim;
2727 char *path = argv[i];
2728
2729 delim = strchr(path, '@');
2730 if (delim == NULL) {
2731 (void) fprintf(stderr,
2732 gettext("'%s' is not a snapshot\n"), path);
2733 ++errors;
2734 continue;
2735 }
2736 (void) strncpy(parent, path, delim - path);
2737 parent[delim - path] = '\0';
2738
2739 zhp = zfs_open(g_zfs, parent,
2740 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
2741 if (zhp == NULL) {
2742 ++errors;
2743 continue;
2744 }
2745 if (func(zhp, delim+1, tag, recursive) != 0)
2746 ++errors;
2747 zfs_close(zhp);
2748 }
2749
2750 return (errors != 0);
2751}
2752
2753/*
2754 * zfs hold [-r] <tag> <snap> ...
2755 *
2756 * -r Recursively hold
2757 *
2758 * Apply a user-hold with the given tag to the list of snapshots.
2759 */
2760static int
2761zfs_do_hold(int argc, char **argv)
2762{
2763 return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
2764}
2765
2766/*
2767 * zfs release [-r] <tag> <snap> ...
2768 *
2769 * -r Recursively release
2770 *
2771 * Release a user-hold with the given tag from the list of snapshots.
2772 */
2773static int
2774zfs_do_release(int argc, char **argv)
2775{
2776 return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
2777}
2778
34dc7c2f
BB		 2779typedef struct get_all_cbdata {
2780 zfs_handle_t **cb_handles;
2781 size_t cb_alloc;
2782 size_t cb_used;
2783 uint_t cb_types;
2784 boolean_t cb_verbose;
2785} get_all_cbdata_t;
2786
2787#define CHECK_SPINNER 30
2788#define SPINNER_TIME 3 /* seconds */
2789#define MOUNT_TIME 5 /* seconds */
2790
2791static int
2792get_one_dataset(zfs_handle_t *zhp, void *data)
2793{
2794 static char spin[] = { '-', '\\', '|', '/' };
2795 static int spinval = 0;
2796 static int spincheck = 0;
2797 static time_t last_spin_time = (time_t)0;
2798 get_all_cbdata_t *cbp = data;
2799 zfs_type_t type = zfs_get_type(zhp);
2800
2801 if (cbp->cb_verbose) {
2802 if (--spincheck < 0) {
2803 time_t now = time(NULL);
2804 if (last_spin_time + SPINNER_TIME < now) {
2805 (void) printf("\b%c", spin[spinval++ % 4]);
2806 (void) fflush(stdout);
2807 last_spin_time = now;
2808 }
2809 spincheck = CHECK_SPINNER;
2810 }
2811 }
2812
2813 /*
2814 * Interate over any nested datasets.
2815 */
2816 if (type == ZFS_TYPE_FILESYSTEM &&
2817 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
2818 zfs_close(zhp);
2819 return (1);
2820 }
2821
2822 /*
2823 * Skip any datasets whose type does not match.
2824 */
2825 if ((type & cbp->cb_types) == 0) {
2826 zfs_close(zhp);
2827 return (0);
2828 }
2829
2830 if (cbp->cb_alloc == cbp->cb_used) {
2831 zfs_handle_t **handles;
2832
2833 if (cbp->cb_alloc == 0)
2834 cbp->cb_alloc = 64;
2835 else
2836 cbp->cb_alloc *= 2;
2837
2838 handles = safe_malloc(cbp->cb_alloc * sizeof (void *));
2839
2840 if (cbp->cb_handles) {
2841 bcopy(cbp->cb_handles, handles,
2842 cbp->cb_used * sizeof (void *));
2843 free(cbp->cb_handles);
2844 }
2845
2846 cbp->cb_handles = handles;
2847 }
2848
2849 cbp->cb_handles[cbp->cb_used++] = zhp;
2850
2851 return (0);
2852}
2853
2854static void
2855get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count,
2856 boolean_t verbose)
2857{
2858 get_all_cbdata_t cb = { 0 };
2859 cb.cb_types = types;
2860 cb.cb_verbose = verbose;
2861
2862 if (verbose) {
2863 (void) printf("%s: *", gettext("Reading ZFS config"));
2864 (void) fflush(stdout);
2865 }
2866
2867 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
2868
2869 *dslist = cb.cb_handles;
2870 *count = cb.cb_used;
2871
2872 if (verbose) {
2873 (void) printf("\b%s\n", gettext("done."));
2874 }
2875}
2876
2877static int
2878dataset_cmp(const void *a, const void *b)
2879{
2880 zfs_handle_t **za = (zfs_handle_t **)a;
2881 zfs_handle_t **zb = (zfs_handle_t **)b;
2882 char mounta[MAXPATHLEN];
2883 char mountb[MAXPATHLEN];
2884 boolean_t gota, gotb;
2885
2886 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0)
2887 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta,
2888 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0);
2889 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0)
2890 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb,
2891 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0);
2892
2893 if (gota && gotb)
2894 return (strcmp(mounta, mountb));
2895
2896 if (gota)
2897 return (-1);
2898 if (gotb)
2899 return (1);
2900
2901 return (strcmp(zfs_get_name(a), zfs_get_name(b)));
2902}
2903
2904/*
2905 * Generic callback for sharing or mounting filesystems. Because the code is so
2906 * similar, we have a common function with an extra parameter to determine which
2907 * mode we are using.
2908 */
2909#define OP_SHARE 0x1
2910#define OP_MOUNT 0x2
2911
2912/*
2913 * Share or mount a dataset.
2914 */
2915static int
2916share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
2917 boolean_t explicit, const char *options)
2918{
2919 char mountpoint[ZFS_MAXPROPLEN];
2920 char shareopts[ZFS_MAXPROPLEN];
2921 char smbshareopts[ZFS_MAXPROPLEN];
2922 const char *cmdname = op == OP_SHARE ? "share" : "mount";
2923 struct mnttab mnt;
2924 uint64_t zoned, canmount;
2925 zfs_type_t type = zfs_get_type(zhp);
2926 boolean_t shared_nfs, shared_smb;
2927
2928 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME));
2929
2930 if (type == ZFS_TYPE_FILESYSTEM) {
2931 /*
2932 * Check to make sure we can mount/share this dataset. If we
2933 * are in the global zone and the filesystem is exported to a
2934 * local zone, or if we are in a local zone and the
2935 * filesystem is not exported, then it is an error.
2936 */
2937 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
2938
2939 if (zoned && getzoneid() == GLOBAL_ZONEID) {
2940 if (!explicit)
2941 return (0);
2942
2943 (void) fprintf(stderr, gettext("cannot %s '%s': "
2944 "dataset is exported to a local zone\n"), cmdname,
2945 zfs_get_name(zhp));
2946 return (1);
2947
2948 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
2949 if (!explicit)
2950 return (0);
2951
2952 (void) fprintf(stderr, gettext("cannot %s '%s': "
2953 "permission denied\n"), cmdname,
2954 zfs_get_name(zhp));
2955 return (1);
2956 }
2957
2958 /*
2959 * Ignore any filesystems which don't apply to us. This
2960 * includes those with a legacy mountpoint, or those with
2961 * legacy share options.
2962 */
2963 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
2964 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
2965 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
2966 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
2967 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
2968 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
34dc7c2f
BB		 2969
2970 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
2971 strcmp(smbshareopts, "off") == 0) {
2972 if (!explicit)
2973 return (0);
2974
2975 (void) fprintf(stderr, gettext("cannot share '%s': "
2976 "legacy share\n"), zfs_get_name(zhp));
2977 (void) fprintf(stderr, gettext("use share(1M) to "
fb5f0bc8
BB		 2978 "share this filesystem, or set "
2979 "sharenfs property on\n"));
34dc7c2f
BB		 2980 return (1);
2981 }
2982
2983 /*
2984 * We cannot share or mount legacy filesystems. If the
2985 * shareopts is non-legacy but the mountpoint is legacy, we
2986 * treat it as a legacy share.
2987 */
2988 if (strcmp(mountpoint, "legacy") == 0) {
2989 if (!explicit)
2990 return (0);
2991
2992 (void) fprintf(stderr, gettext("cannot %s '%s': "
2993 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
2994 (void) fprintf(stderr, gettext("use %s(1M) to "
2995 "%s this filesystem\n"), cmdname, cmdname);
2996 return (1);
2997 }
2998
2999 if (strcmp(mountpoint, "none") == 0) {
3000 if (!explicit)
3001 return (0);
3002
3003 (void) fprintf(stderr, gettext("cannot %s '%s': no "
3004 "mountpoint set\n"), cmdname, zfs_get_name(zhp));
3005 return (1);
3006 }
3007
3008 /*
3009 * canmount explicit outcome
3010 * on no pass through
3011 * on yes pass through
3012 * off no return 0
3013 * off yes display error, return 1
3014 * noauto no return 0
3015 * noauto yes pass through
3016 */
fb5f0bc8 3017 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
34dc7c2f
BB		 3018 if (canmount == ZFS_CANMOUNT_OFF) {
3019 if (!explicit)
3020 return (0);
3021
3022 (void) fprintf(stderr, gettext("cannot %s '%s': "
3023 "'canmount' property is set to 'off'\n"), cmdname,
3024 zfs_get_name(zhp));
3025 return (1);
3026 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
3027 return (0);
3028 }
3029
3030 /*
3031 * At this point, we have verified that the mountpoint and/or
3032 * shareopts are appropriate for auto management. If the
3033 * filesystem is already mounted or shared, return (failing
3034 * for explicit requests); otherwise mount or share the
3035 * filesystem.
3036 */
3037 switch (op) {
3038 case OP_SHARE:
3039
3040 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
3041 shared_smb = zfs_is_shared_smb(zhp, NULL);
3042
3043 if (shared_nfs && shared_smb ||
3044 (shared_nfs && strcmp(shareopts, "on") == 0 &&
3045 strcmp(smbshareopts, "off") == 0) ||
3046 (shared_smb && strcmp(smbshareopts, "on") == 0 &&
3047 strcmp(shareopts, "off") == 0)) {
3048 if (!explicit)
3049 return (0);
3050
3051 (void) fprintf(stderr, gettext("cannot share "
3052 "'%s': filesystem already shared\n"),
3053 zfs_get_name(zhp));
3054 return (1);
3055 }
3056
3057 if (!zfs_is_mounted(zhp, NULL) &&
3058 zfs_mount(zhp, NULL, 0) != 0)
3059 return (1);
3060
3061 if (protocol == NULL) {
3062 if (zfs_shareall(zhp) != 0)
3063 return (1);
3064 } else if (strcmp(protocol, "nfs") == 0) {
3065 if (zfs_share_nfs(zhp))
3066 return (1);
3067 } else if (strcmp(protocol, "smb") == 0) {
3068 if (zfs_share_smb(zhp))
3069 return (1);
3070 } else {
3071 (void) fprintf(stderr, gettext("cannot share "
3072 "'%s': invalid share type '%s' "
3073 "specified\n"),
3074 zfs_get_name(zhp), protocol);
3075 return (1);
3076 }
3077
3078 break;
3079
3080 case OP_MOUNT:
3081 if (options == NULL)
3082 mnt.mnt_mntopts = "";
3083 else
3084 mnt.mnt_mntopts = (char *)options;
3085
3086 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
3087 zfs_is_mounted(zhp, NULL)) {
3088 if (!explicit)
3089 return (0);
3090
3091 (void) fprintf(stderr, gettext("cannot mount "
3092 "'%s': filesystem already mounted\n"),
3093 zfs_get_name(zhp));
3094 return (1);
3095 }
3096
3097 if (zfs_mount(zhp, options, flags) != 0)
3098 return (1);
3099 break;
3100 }
3101 } else {
3102 assert(op == OP_SHARE);
3103
3104 /*
3105 * Ignore any volumes that aren't shared.
3106 */
3107 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts,
3108 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
3109
3110 if (strcmp(shareopts, "off") == 0) {
3111 if (!explicit)
3112 return (0);
3113
3114 (void) fprintf(stderr, gettext("cannot share '%s': "
3115 "'shareiscsi' property not set\n"),
3116 zfs_get_name(zhp));
3117 (void) fprintf(stderr, gettext("set 'shareiscsi' "
3118 "property or use iscsitadm(1M) to share this "
3119 "volume\n"));
3120 return (1);
3121 }
3122
3123 if (zfs_is_shared_iscsi(zhp)) {
3124 if (!explicit)
3125 return (0);
3126
3127 (void) fprintf(stderr, gettext("cannot share "
3128 "'%s': volume already shared\n"),
3129 zfs_get_name(zhp));
3130 return (1);
3131 }
3132
3133 if (zfs_share_iscsi(zhp) != 0)
3134 return (1);
3135 }
3136
3137 return (0);
3138}
3139
3140/*
3141 * Reports progress in the form "(current/total)". Not thread-safe.
3142 */
3143static void
3144report_mount_progress(int current, int total)
3145{
3146 static int len;
3147 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"
3148 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b";
3149 static time_t last_progress_time;
3150 time_t now = time(NULL);
3151
3152 /* report 1..n instead of 0..n-1 */
3153 ++current;
3154
3155 /* display header if we're here for the first time */
3156 if (current == 1) {
3157 (void) printf(gettext("Mounting ZFS filesystems: "));
3158 len = 0;
3159 } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
3160 /* too soon to report again */
3161 return;
3162 }
3163
3164 last_progress_time = now;
3165
3166 /* back up to prepare for overwriting */
3167 if (len)
3168 (void) printf("%*.*s", len, len, reverse);
3169
3170 /* We put a newline at the end if this is the last one. */
3171 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : "");
3172 (void) fflush(stdout);
3173}
3174
3175static void
3176append_options(char *mntopts, char *newopts)
3177{
3178 int len = strlen(mntopts);
3179
3180 /* original length plus new string to append plus 1 for the comma */
3181 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
3182 (void) fprintf(stderr, gettext("the opts argument for "
3183 "'%c' option is too long (more than %d chars)\n"),
3184 "-o", MNT_LINE_MAX);
3185 usage(B_FALSE);
3186 }
3187
3188 if (*mntopts)
3189 mntopts[len++] = ',';
3190
3191 (void) strcpy(&mntopts[len], newopts);
3192}
3193
3194static int
3195share_mount(int op, int argc, char **argv)
3196{
3197 int do_all = 0;
3198 boolean_t verbose = B_FALSE;
3199 int c, ret = 0;
3200 char *options = NULL;
3201 int types, flags = 0;
3202
3203 /* check options */
3204 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
3205 != -1) {
3206 switch (c) {
3207 case 'a':
3208 do_all = 1;
3209 break;
3210 case 'v':
3211 verbose = B_TRUE;
3212 break;
3213 case 'o':
3214 if (*optarg == '\0') {
3215 (void) fprintf(stderr, gettext("empty mount "
3216 "options (-o) specified\n"));
3217 usage(B_FALSE);
3218 }
3219
3220 if (options == NULL)
3221 options = safe_malloc(MNT_LINE_MAX + 1);
3222
3223 /* option validation is done later */
3224 append_options(options, optarg);
3225 break;
3226
3227 case 'O':
3228 flags |= MS_OVERLAY;
3229 break;
3230 case ':':
3231 (void) fprintf(stderr, gettext("missing argument for "
3232 "'%c' option\n"), optopt);
3233 usage(B_FALSE);
3234 break;
3235 case '?':
3236 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3237 optopt);
3238 usage(B_FALSE);
3239 }
3240 }
3241
3242 argc -= optind;
3243 argv += optind;
3244
3245 /* check number of arguments */
3246 if (do_all) {
3247 zfs_handle_t **dslist = NULL;
3248 size_t i, count = 0;
3249 char *protocol = NULL;
3250
3251 if (op == OP_MOUNT) {
3252 types = ZFS_TYPE_FILESYSTEM;
3253 } else if (argc > 0) {
3254 if (strcmp(argv[0], "nfs") == 0 ||
3255 strcmp(argv[0], "smb") == 0) {
3256 types = ZFS_TYPE_FILESYSTEM;
3257 } else if (strcmp(argv[0], "iscsi") == 0) {
3258 types = ZFS_TYPE_VOLUME;
3259 } else {
3260 (void) fprintf(stderr, gettext("share type "
3261 "must be 'nfs', 'smb' or 'iscsi'\n"));
3262 usage(B_FALSE);
3263 }
3264 protocol = argv[0];
3265 argc--;
3266 argv++;
3267 } else {
3268 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
3269 }
3270
3271 if (argc != 0) {
3272 (void) fprintf(stderr, gettext("too many arguments\n"));
3273 usage(B_FALSE);
3274 }
3275
3276 get_all_datasets(types, &dslist, &count, verbose);
3277
3278 if (count == 0)
3279 return (0);
3280
3281 qsort(dslist, count, sizeof (void *), dataset_cmp);
3282
3283 for (i = 0; i < count; i++) {
3284 if (verbose)
3285 report_mount_progress(i, count);
3286
3287 if (share_mount_one(dslist[i], op, flags, protocol,
3288 B_FALSE, options) != 0)
3289 ret = 1;
3290 zfs_close(dslist[i]);
3291 }
3292
3293 free(dslist);
3294 } else if (argc == 0) {
3295 struct mnttab entry;
3296
3297 if ((op == OP_SHARE) || (options != NULL)) {
3298 (void) fprintf(stderr, gettext("missing filesystem "
3299 "argument (specify -a for all)\n"));
3300 usage(B_FALSE);
3301 }
3302
3303 /*
3304 * When mount is given no arguments, go through /etc/mnttab and
3305 * display any active ZFS mounts. We hide any snapshots, since
3306 * they are controlled automatically.
3307 */
3308 rewind(mnttab_file);
3309 while (getmntent(mnttab_file, &entry) == 0) {
3310 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
3311 strchr(entry.mnt_special, '@') != NULL)
3312 continue;
3313
3314 (void) printf("%-30s %s\n", entry.mnt_special,
3315 entry.mnt_mountp);
3316 }
3317
3318 } else {
3319 zfs_handle_t *zhp;
3320
3321 types = ZFS_TYPE_FILESYSTEM;
3322 if (op == OP_SHARE)
3323 types |= ZFS_TYPE_VOLUME;
3324
3325 if (argc > 1) {
3326 (void) fprintf(stderr,
3327 gettext("too many arguments\n"));
3328 usage(B_FALSE);
3329 }
3330
3331 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) {
3332 ret = 1;
3333 } else {
3334 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
3335 options);
3336 zfs_close(zhp);
3337 }
3338 }
3339
3340 return (ret);
3341}
3342
3343/*
3344 * zfs mount -a [nfs | iscsi]
3345 * zfs mount filesystem
3346 *
3347 * Mount all filesystems, or mount the given filesystem.
3348 */
3349static int
3350zfs_do_mount(int argc, char **argv)
3351{
3352 return (share_mount(OP_MOUNT, argc, argv));
3353}
3354
3355/*
3356 * zfs share -a [nfs | iscsi | smb]
3357 * zfs share filesystem
3358 *
3359 * Share all filesystems, or share the given filesystem.
3360 */
3361static int
3362zfs_do_share(int argc, char **argv)
3363{
3364 return (share_mount(OP_SHARE, argc, argv));
3365}
3366
3367typedef struct unshare_unmount_node {
3368 zfs_handle_t *un_zhp;
3369 char *un_mountp;
3370 uu_avl_node_t un_avlnode;
3371} unshare_unmount_node_t;
3372
3373/* ARGSUSED */
3374static int
3375unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
3376{
3377 const unshare_unmount_node_t *l = larg;
3378 const unshare_unmount_node_t *r = rarg;
3379
3380 return (strcmp(l->un_mountp, r->un_mountp));
3381}
3382
3383/*
3384 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an
3385 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
3386 * and unmount it appropriately.
3387 */
3388static int
3389unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
3390{
3391 zfs_handle_t *zhp;
3392 int ret;
3393 struct stat64 statbuf;
3394 struct extmnttab entry;
3395 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
3396 ino_t path_inode;
3397
3398 /*
3399 * Search for the path in /etc/mnttab. Rather than looking for the
3400 * specific path, which can be fooled by non-standard paths (i.e. ".."
3401 * or "//"), we stat() the path and search for the corresponding
3402 * (major,minor) device pair.
3403 */
3404 if (stat64(path, &statbuf) != 0) {
3405 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
3406 cmdname, path, strerror(errno));
3407 return (1);
3408 }
3409 path_inode = statbuf.st_ino;
3410
3411 /*
3412 * Search for the given (major,minor) pair in the mount table.
3413 */
3414 rewind(mnttab_file);
3415 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
3416 if (entry.mnt_major == major(statbuf.st_dev) &&
3417 entry.mnt_minor == minor(statbuf.st_dev))
3418 break;
3419 }
3420 if (ret != 0) {
3421 if (op == OP_SHARE) {
3422 (void) fprintf(stderr, gettext("cannot %s '%s': not "
3423 "currently mounted\n"), cmdname, path);
3424 return (1);
3425 }
3426 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
3427 path);
3428 if ((ret = umount2(path, flags)) != 0)
3429 (void) fprintf(stderr, gettext("%s: %s\n"), path,
3430 strerror(errno));
3431 return (ret != 0);
3432 }
3433
3434 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
3435 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
3436 "filesystem\n"), cmdname, path);
3437 return (1);
3438 }
3439
3440 if ((zhp = zfs_open(g_zfs, entry.mnt_special,
3441 ZFS_TYPE_FILESYSTEM)) == NULL)
3442 return (1);
3443
34dc7c2f 3444 ret = 1;
b128c09f
BB		 3445 if (stat64(entry.mnt_mountp, &statbuf) != 0) {
3446 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
3447 cmdname, path, strerror(errno));
3448 goto out;
3449 } else if (statbuf.st_ino != path_inode) {
3450 (void) fprintf(stderr, gettext("cannot "
3451 "%s '%s': not a mountpoint\n"), cmdname, path);
3452 goto out;
3453 }
3454
34dc7c2f
BB		 3455 if (op == OP_SHARE) {
3456 char nfs_mnt_prop[ZFS_MAXPROPLEN];
3457 char smbshare_prop[ZFS_MAXPROPLEN];
3458
3459 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
3460 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
3461 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
3462 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
3463
3464 if (strcmp(nfs_mnt_prop, "off") == 0 &&
3465 strcmp(smbshare_prop, "off") == 0) {
3466 (void) fprintf(stderr, gettext("cannot unshare "
3467 "'%s': legacy share\n"), path);
3468 (void) fprintf(stderr, gettext("use "
3469 "unshare(1M) to unshare this filesystem\n"));
3470 } else if (!zfs_is_shared(zhp)) {
3471 (void) fprintf(stderr, gettext("cannot unshare '%s': "
3472 "not currently shared\n"), path);
3473 } else {
3474 ret = zfs_unshareall_bypath(zhp, path);
3475 }
3476 } else {
3477 char mtpt_prop[ZFS_MAXPROPLEN];
3478
3479 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
3480 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
3481
b128c09f 3482 if (is_manual) {
34dc7c2f
BB		 3483 ret = zfs_unmount(zhp, NULL, flags);
3484 } else if (strcmp(mtpt_prop, "legacy") == 0) {
3485 (void) fprintf(stderr, gettext("cannot unmount "
3486 "'%s': legacy mountpoint\n"),
3487 zfs_get_name(zhp));
3488 (void) fprintf(stderr, gettext("use umount(1M) "
3489 "to unmount this filesystem\n"));
3490 } else {
3491 ret = zfs_unmountall(zhp, flags);
3492 }
3493 }
3494
b128c09f 3495out:
34dc7c2f
BB		 3496 zfs_close(zhp);
3497
3498 return (ret != 0);
3499}
3500
3501/*
3502 * Generic callback for unsharing or unmounting a filesystem.
3503 */
3504static int
3505unshare_unmount(int op, int argc, char **argv)
3506{
3507 int do_all = 0;
3508 int flags = 0;
3509 int ret = 0;
3510 int types, c;
3511 zfs_handle_t *zhp;
3512 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN];
3513 char sharesmb[ZFS_MAXPROPLEN];
3514
3515 /* check options */
3516 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
3517 switch (c) {
3518 case 'a':
3519 do_all = 1;
3520 break;
3521 case 'f':
3522 flags = MS_FORCE;
3523 break;
3524 case '?':
3525 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3526 optopt);
3527 usage(B_FALSE);
3528 }
3529 }
3530
3531 argc -= optind;
3532 argv += optind;
3533
3534 if (do_all) {
3535 /*
3536 * We could make use of zfs_for_each() to walk all datasets in
3537 * the system, but this would be very inefficient, especially
3538 * since we would have to linearly search /etc/mnttab for each
3539 * one. Instead, do one pass through /etc/mnttab looking for
3540 * zfs entries and call zfs_unmount() for each one.
3541 *
3542 * Things get a little tricky if the administrator has created
3543 * mountpoints beneath other ZFS filesystems. In this case, we
3544 * have to unmount the deepest filesystems first. To accomplish
3545 * this, we place all the mountpoints in an AVL tree sorted by
3546 * the special type (dataset name), and walk the result in
3547 * reverse to make sure to get any snapshots first.
3548 */
3549 struct mnttab entry;
3550 uu_avl_pool_t *pool;
3551 uu_avl_t *tree;
3552 unshare_unmount_node_t *node;
3553 uu_avl_index_t idx;
3554 uu_avl_walk_t *walk;
3555
3556 if (argc != 0) {
3557 (void) fprintf(stderr, gettext("too many arguments\n"));
3558 usage(B_FALSE);
3559 }
3560
3561 if ((pool = uu_avl_pool_create("unmount_pool",
3562 sizeof (unshare_unmount_node_t),
3563 offsetof(unshare_unmount_node_t, un_avlnode),
3564 unshare_unmount_compare,
3565 UU_DEFAULT)) == NULL) {
3566 (void) fprintf(stderr, gettext("internal error: "
3567 "out of memory\n"));
3568 exit(1);
3569 }
3570
3571 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) {
3572 (void) fprintf(stderr, gettext("internal error: "
3573 "out of memory\n"));
3574 exit(1);
3575 }
3576
3577 rewind(mnttab_file);
3578 while (getmntent(mnttab_file, &entry) == 0) {
3579
3580 /* ignore non-ZFS entries */
3581 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
3582 continue;
3583
3584 /* ignore snapshots */
3585 if (strchr(entry.mnt_special, '@') != NULL)
3586 continue;
3587
3588 if ((zhp = zfs_open(g_zfs, entry.mnt_special,
3589 ZFS_TYPE_FILESYSTEM)) == NULL) {
3590 ret = 1;
3591 continue;
3592 }
3593
3594 switch (op) {
3595 case OP_SHARE:
3596 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
3597 nfsiscsi_mnt_prop,
3598 sizeof (nfsiscsi_mnt_prop),
3599 NULL, NULL, 0, B_FALSE) == 0);
3600 if (strcmp(nfsiscsi_mnt_prop, "off") != 0)
3601 break;
3602 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
3603 nfsiscsi_mnt_prop,
3604 sizeof (nfsiscsi_mnt_prop),
3605 NULL, NULL, 0, B_FALSE) == 0);
3606 if (strcmp(nfsiscsi_mnt_prop, "off") == 0)
3607 continue;
3608 break;
3609 case OP_MOUNT:
3610 /* Ignore legacy mounts */
3611 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
3612 nfsiscsi_mnt_prop,
3613 sizeof (nfsiscsi_mnt_prop),
3614 NULL, NULL, 0, B_FALSE) == 0);
3615 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0)
3616 continue;
3617 /* Ignore canmount=noauto mounts */
3618 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
3619 ZFS_CANMOUNT_NOAUTO)
3620 continue;
3621 default:
3622 break;
3623 }
3624
3625 node = safe_malloc(sizeof (unshare_unmount_node_t));
3626 node->un_zhp = zhp;
3627
3628 if ((node->un_mountp = strdup(entry.mnt_mountp)) ==
3629 NULL) {
3630 (void) fprintf(stderr, gettext("internal error:"
3631 " out of memory\n"));
3632 exit(1);
3633 }
3634
3635 uu_avl_node_init(node, &node->un_avlnode, pool);
3636
3637 if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
3638 uu_avl_insert(tree, node, idx);
3639 } else {
3640 zfs_close(node->un_zhp);
3641 free(node->un_mountp);
3642 free(node);
3643 }
3644 }
3645
3646 /*
3647 * Walk the AVL tree in reverse, unmounting each filesystem and
3648 * removing it from the AVL tree in the process.
3649 */
3650 if ((walk = uu_avl_walk_start(tree,
3651 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) {
3652 (void) fprintf(stderr,
3653 gettext("internal error: out of memory"));
3654 exit(1);
3655 }
3656
3657 while ((node = uu_avl_walk_next(walk)) != NULL) {
3658 uu_avl_remove(tree, node);
3659
3660 switch (op) {
3661 case OP_SHARE:
3662 if (zfs_unshareall_bypath(node->un_zhp,
3663 node->un_mountp) != 0)
3664 ret = 1;
3665 break;
3666
3667 case OP_MOUNT:
3668 if (zfs_unmount(node->un_zhp,
3669 node->un_mountp, flags) != 0)
3670 ret = 1;
3671 break;
3672 }
3673
3674 zfs_close(node->un_zhp);
3675 free(node->un_mountp);
3676 free(node);
3677 }
3678
3679 uu_avl_walk_end(walk);
3680 uu_avl_destroy(tree);
3681 uu_avl_pool_destroy(pool);
3682
3683 if (op == OP_SHARE) {
3684 /*
3685 * Finally, unshare any volumes shared via iSCSI.
3686 */
3687 zfs_handle_t **dslist = NULL;
3688 size_t i, count = 0;
3689
3690 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count,
3691 B_FALSE);
3692
3693 if (count != 0) {
3694 qsort(dslist, count, sizeof (void *),
3695 dataset_cmp);
3696
3697 for (i = 0; i < count; i++) {
3698 if (zfs_unshare_iscsi(dslist[i]) != 0)
3699 ret = 1;
3700 zfs_close(dslist[i]);
3701 }
3702
3703 free(dslist);
3704 }
3705 }
3706 } else {
3707 if (argc != 1) {
3708 if (argc == 0)
3709 (void) fprintf(stderr,
3710 gettext("missing filesystem argument\n"));
3711 else
3712 (void) fprintf(stderr,
3713 gettext("too many arguments\n"));
3714 usage(B_FALSE);
3715 }
3716
3717 /*
3718 * We have an argument, but it may be a full path or a ZFS
3719 * filesystem. Pass full paths off to unmount_path() (shared by
3720 * manual_unmount), otherwise open the filesystem and pass to
3721 * zfs_unmount().
3722 */
3723 if (argv[0][0] == '/')
3724 return (unshare_unmount_path(op, argv[0],
3725 flags, B_FALSE));
3726
3727 types = ZFS_TYPE_FILESYSTEM;
3728 if (op == OP_SHARE)
3729 types |= ZFS_TYPE_VOLUME;
3730
3731 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
3732 return (1);
3733
3734 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
3735 verify(zfs_prop_get(zhp, op == OP_SHARE ?
3736 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
3737 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL,
3738 NULL, 0, B_FALSE) == 0);
3739
3740 switch (op) {
3741 case OP_SHARE:
3742 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
3743 nfsiscsi_mnt_prop,
3744 sizeof (nfsiscsi_mnt_prop),
3745 NULL, NULL, 0, B_FALSE) == 0);
3746 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
3747 sharesmb, sizeof (sharesmb), NULL, NULL,
3748 0, B_FALSE) == 0);
3749
3750 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 &&
3751 strcmp(sharesmb, "off") == 0) {
3752 (void) fprintf(stderr, gettext("cannot "
3753 "unshare '%s': legacy share\n"),
3754 zfs_get_name(zhp));
3755 (void) fprintf(stderr, gettext("use "
3756 "unshare(1M) to unshare this "
3757 "filesystem\n"));
3758 ret = 1;
3759 } else if (!zfs_is_shared(zhp)) {
3760 (void) fprintf(stderr, gettext("cannot "
3761 "unshare '%s': not currently "
3762 "shared\n"), zfs_get_name(zhp));
3763 ret = 1;
3764 } else if (zfs_unshareall(zhp) != 0) {
3765 ret = 1;
3766 }
3767 break;
3768
3769 case OP_MOUNT:
3770 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) {
3771 (void) fprintf(stderr, gettext("cannot "
3772 "unmount '%s': legacy "
3773 "mountpoint\n"), zfs_get_name(zhp));
3774 (void) fprintf(stderr, gettext("use "
3775 "umount(1M) to unmount this "
3776 "filesystem\n"));
3777 ret = 1;
3778 } else if (!zfs_is_mounted(zhp, NULL)) {
3779 (void) fprintf(stderr, gettext("cannot "
3780 "unmount '%s': not currently "
3781 "mounted\n"),
3782 zfs_get_name(zhp));
3783 ret = 1;
3784 } else if (zfs_unmountall(zhp, flags) != 0) {
3785 ret = 1;
3786 }
3787 break;
3788 }
3789 } else {
3790 assert(op == OP_SHARE);
3791
3792 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI,
3793 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop),
3794 NULL, NULL, 0, B_FALSE) == 0);
3795
3796 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) {
3797 (void) fprintf(stderr, gettext("cannot unshare "
3798 "'%s': 'shareiscsi' property not set\n"),
3799 zfs_get_name(zhp));
3800 (void) fprintf(stderr, gettext("set "
3801 "'shareiscsi' property or use "
3802 "iscsitadm(1M) to share this volume\n"));
3803 ret = 1;
3804 } else if (!zfs_is_shared_iscsi(zhp)) {
3805 (void) fprintf(stderr, gettext("cannot "
3806 "unshare '%s': not currently shared\n"),
3807 zfs_get_name(zhp));
3808 ret = 1;
3809 } else if (zfs_unshare_iscsi(zhp) != 0) {
3810 ret = 1;
3811 }
3812 }
3813
3814 zfs_close(zhp);
3815 }
3816
3817 return (ret);
3818}
3819
3820/*
3821 * zfs unmount -a
3822 * zfs unmount filesystem
3823 *
3824 * Unmount all filesystems, or a specific ZFS filesystem.
3825 */
3826static int
3827zfs_do_unmount(int argc, char **argv)
3828{
3829 return (unshare_unmount(OP_MOUNT, argc, argv));
3830}
3831
3832/*
3833 * zfs unshare -a
3834 * zfs unshare filesystem
3835 *
3836 * Unshare all filesystems, or a specific ZFS filesystem.
3837 */
3838static int
3839zfs_do_unshare(int argc, char **argv)
3840{
3841 return (unshare_unmount(OP_SHARE, argc, argv));
3842}
3843
9babb374
BB		 3844/* ARGSUSED */
3845static int
3846zfs_do_python(int argc, char **argv)
3847{
3848 (void) execv(pypath, argv-1);
3849 (void) printf("internal error: %s not found\n", pypath);
3850 return (-1);
3851}
3852
34dc7c2f
BB		 3853/*
3854 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is
3855 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'.
3856 */
3857static int
3858manual_mount(int argc, char **argv)
3859{
3860 zfs_handle_t *zhp;
3861 char mountpoint[ZFS_MAXPROPLEN];
3862 char mntopts[MNT_LINE_MAX] = { '\0' };
3863 int ret;
3864 int c;
3865 int flags = 0;
3866 char *dataset, *path;
3867
3868 /* check options */
3869 while ((c = getopt(argc, argv, ":mo:O")) != -1) {
3870 switch (c) {
3871 case 'o':
3872 (void) strlcpy(mntopts, optarg, sizeof (mntopts));
3873 break;
3874 case 'O':
3875 flags |= MS_OVERLAY;
3876 break;
3877 case 'm':
3878 flags |= MS_NOMNTTAB;
3879 break;
3880 case ':':
3881 (void) fprintf(stderr, gettext("missing argument for "
3882 "'%c' option\n"), optopt);
3883 usage(B_FALSE);
3884 break;
3885 case '?':
3886 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3887 optopt);
3888 (void) fprintf(stderr, gettext("usage: mount [-o opts] "
3889 "<path>\n"));
3890 return (2);
3891 }
3892 }
3893
3894 argc -= optind;
3895 argv += optind;
3896
3897 /* check that we only have two arguments */
3898 if (argc != 2) {
3899 if (argc == 0)
3900 (void) fprintf(stderr, gettext("missing dataset "
3901 "argument\n"));
3902 else if (argc == 1)
3903 (void) fprintf(stderr,
3904 gettext("missing mountpoint argument\n"));
3905 else
3906 (void) fprintf(stderr, gettext("too many arguments\n"));
3907 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
3908 return (2);
3909 }
3910
3911 dataset = argv[0];
3912 path = argv[1];
3913
3914 /* try to open the dataset */
3915 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
3916 return (1);
3917
3918 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
3919 sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
3920
3921 /* check for legacy mountpoint and complain appropriately */
3922 ret = 0;
3923 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
3924 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS,
3925 NULL, 0, mntopts, sizeof (mntopts)) != 0) {
3926 (void) fprintf(stderr, gettext("mount failed: %s\n"),
3927 strerror(errno));
3928 ret = 1;
3929 }
3930 } else {
3931 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
3932 "mounted using 'mount -F zfs'\n"), dataset);
3933 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
3934 "instead.\n"), path);
3935 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' "
3936 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n"));
3937 (void) fprintf(stderr, gettext("See zfs(1M) for more "
3938 "information.\n"));
3939 ret = 1;
3940 }
3941
3942 return (ret);
3943}
3944
3945/*
3946 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow
3947 * unmounts of non-legacy filesystems, as this is the dominant administrative
3948 * interface.
3949 */
3950static int
3951manual_unmount(int argc, char **argv)
3952{
3953 int flags = 0;
3954 int c;
3955
3956 /* check options */
3957 while ((c = getopt(argc, argv, "f")) != -1) {
3958 switch (c) {
3959 case 'f':
3960 flags = MS_FORCE;
3961 break;
3962 case '?':
3963 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3964 optopt);
3965 (void) fprintf(stderr, gettext("usage: unmount [-f] "
3966 "<path>\n"));
3967 return (2);
3968 }
3969 }
3970
3971 argc -= optind;
3972 argv += optind;
3973
3974 /* check arguments */
3975 if (argc != 1) {
3976 if (argc == 0)
3977 (void) fprintf(stderr, gettext("missing path "
3978 "argument\n"));
3979 else
3980 (void) fprintf(stderr, gettext("too many arguments\n"));
3981 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
3982 return (2);
3983 }
3984
3985 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
3986}
3987
3988static int
3989volcheck(zpool_handle_t *zhp, void *data)
3990{
3991 boolean_t isinit = *((boolean_t *)data);
3992
3993 if (isinit)
3994 return (zpool_create_zvol_links(zhp));
3995 else
3996 return (zpool_remove_zvol_links(zhp));
3997}
3998
3999/*
4000 * Iterate over all pools in the system and either create or destroy /dev/zvol
4001 * links, depending on the value of 'isinit'.
4002 */
4003static int
4004do_volcheck(boolean_t isinit)
4005{
4006 return (zpool_iter(g_zfs, volcheck, &isinit) ? 1 : 0);
4007}
4008
4009static int
4010find_command_idx(char *command, int *idx)
4011{
4012 int i;
4013
4014 for (i = 0; i < NCOMMAND; i++) {
4015 if (command_table[i].name == NULL)
4016 continue;
4017
4018 if (strcmp(command, command_table[i].name) == 0) {
4019 *idx = i;
4020 return (0);
4021 }
4022 }
4023 return (1);
4024}
4025
4026int
4027main(int argc, char **argv)
4028{
4029 int ret;
4030 int i;
4031 char *progname;
4032 char *cmdname;
4033
4034 (void) setlocale(LC_ALL, "");
4035 (void) textdomain(TEXT_DOMAIN);
4036
4037 opterr = 0;
4038
4039 if ((g_zfs = libzfs_init()) == NULL) {
4040 (void) fprintf(stderr, gettext("internal error: failed to "
4041 "initialize ZFS library\n"));
4042 return (1);
4043 }
4044
4045 zpool_set_history_str("zfs", argc, argv, history_str);
4046 verify(zpool_stage_history(g_zfs, history_str) == 0);
4047
4048 libzfs_print_on_error(g_zfs, B_TRUE);
4049
4050 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
4051 (void) fprintf(stderr, gettext("internal error: unable to "
4052 "open %s\n"), MNTTAB);
4053 return (1);
4054 }
4055
4056 /*
4057 * This command also doubles as the /etc/fs mount and unmount program.
4058 * Determine if we should take this behavior based on argv[0].
4059 */
4060 progname = basename(argv[0]);
4061 if (strcmp(progname, "mount") == 0) {
4062 ret = manual_mount(argc, argv);
4063 } else if (strcmp(progname, "umount") == 0) {
4064 ret = manual_unmount(argc, argv);
4065 } else {
4066 /*
4067 * Make sure the user has specified some command.
4068 */
4069 if (argc < 2) {
4070 (void) fprintf(stderr, gettext("missing command\n"));
4071 usage(B_FALSE);
4072 }
4073
4074 cmdname = argv[1];
4075
4076 /*
4077 * The 'umount' command is an alias for 'unmount'
4078 */
4079 if (strcmp(cmdname, "umount") == 0)
4080 cmdname = "unmount";
4081
4082 /*
4083 * The 'recv' command is an alias for 'receive'
4084 */
4085 if (strcmp(cmdname, "recv") == 0)
4086 cmdname = "receive";
4087
4088 /*
4089 * Special case '-?'
4090 */
4091 if (strcmp(cmdname, "-?") == 0)
4092 usage(B_TRUE);
4093
4094 /*
4095 * 'volinit' and 'volfini' do not appear in the usage message,
4096 * so we have to special case them here.
4097 */
4098 if (strcmp(cmdname, "volinit") == 0)
4099 return (do_volcheck(B_TRUE));
4100 else if (strcmp(cmdname, "volfini") == 0)
4101 return (do_volcheck(B_FALSE));
4102
4103 /*
4104 * Run the appropriate command.
4105 */
9babb374 4106 libzfs_mnttab_cache(g_zfs, B_TRUE);
34dc7c2f
BB		 4107 if (find_command_idx(cmdname, &i) == 0) {
4108 current_command = &command_table[i];
4109 ret = command_table[i].func(argc - 1, argv + 1);
4110 } else if (strchr(cmdname, '=') != NULL) {
4111 verify(find_command_idx("set", &i) == 0);
4112 current_command = &command_table[i];
4113 ret = command_table[i].func(argc, argv);
4114 } else {
4115 (void) fprintf(stderr, gettext("unrecognized "
4116 "command '%s'\n"), cmdname);
4117 usage(B_FALSE);
4118 }
9babb374 4119 libzfs_mnttab_cache(g_zfs, B_FALSE);
34dc7c2f
BB		 4120 }
4121
4122 (void) fclose(mnttab_file);
4123
4124 libzfs_fini(g_zfs);
4125
4126 /*
4127 * The 'ZFS_ABORT' environment variable causes us to dump core on exit
4128 * for the purposes of running ::findleaks.
4129 */
4130 if (getenv("ZFS_ABORT") != NULL) {
4131 (void) printf("dumping core by request\n");
4132 abort();
4133 }
4134
4135 return (ret);
4136}
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