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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>
42#include <sys/mkdev.h>
43#include <sys/mntent.h>
44#include <sys/mnttab.h>
45#include <sys/mount.h>
46#include <sys/stat.h>
47#include <sys/avl.h>
48
49#include <libzfs.h>
50#include <libuutil.h>
51
52#include "zfs_iter.h"
53#include "zfs_util.h"
54
55libzfs_handle_t *g_zfs;
56
57static FILE *mnttab_file;
58static char history_str[HIS_MAX_RECORD_LEN];
59
60static int zfs_do_clone(int argc, char **argv);
61static int zfs_do_create(int argc, char **argv);
62static int zfs_do_destroy(int argc, char **argv);
63static int zfs_do_get(int argc, char **argv);
64static int zfs_do_inherit(int argc, char **argv);
65static int zfs_do_list(int argc, char **argv);
66static int zfs_do_mount(int argc, char **argv);
67static int zfs_do_rename(int argc, char **argv);
68static int zfs_do_rollback(int argc, char **argv);
69static int zfs_do_set(int argc, char **argv);
70static int zfs_do_upgrade(int argc, char **argv);
71static int zfs_do_snapshot(int argc, char **argv);
72static int zfs_do_unmount(int argc, char **argv);
73static int zfs_do_share(int argc, char **argv);
74static int zfs_do_unshare(int argc, char **argv);
75static int zfs_do_send(int argc, char **argv);
76static int zfs_do_receive(int argc, char **argv);
77static int zfs_do_promote(int argc, char **argv);
78static int zfs_do_allow(int argc, char **argv);
79static int zfs_do_unallow(int argc, char **argv);
80
81/*
b128c09f 82 * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
34dc7c2f 83 */
b128c09f
BB		 84
85#ifdef DEBUG
34dc7c2f
BB		 86const char *
87_umem_debug_init(void)
88{
89 return ("default,verbose"); /* $UMEM_DEBUG setting */
90}
91
92const char *
93_umem_logging_init(void)
94{
95 return ("fail,contents"); /* $UMEM_LOGGING setting */
96}
b128c09f 97#endif
34dc7c2f
BB		 98
99typedef enum {
100 HELP_CLONE,
101 HELP_CREATE,
102 HELP_DESTROY,
103 HELP_GET,
104 HELP_INHERIT,
105 HELP_UPGRADE,
106 HELP_LIST,
107 HELP_MOUNT,
108 HELP_PROMOTE,
109 HELP_RECEIVE,
110 HELP_RENAME,
111 HELP_ROLLBACK,
112 HELP_SEND,
113 HELP_SET,
114 HELP_SHARE,
115 HELP_SNAPSHOT,
116 HELP_UNMOUNT,
117 HELP_UNSHARE,
118 HELP_ALLOW,
119 HELP_UNALLOW
120} zfs_help_t;
121
122typedef struct zfs_command {
123 const char *name;
124 int (*func)(int argc, char **argv);
125 zfs_help_t usage;
126} zfs_command_t;
127
128/*
129 * Master command table. Each ZFS command has a name, associated function, and
130 * usage message. The usage messages need to be internationalized, so we have
131 * to have a function to return the usage message based on a command index.
132 *
133 * These commands are organized according to how they are displayed in the usage
134 * message. An empty command (one with a NULL name) indicates an empty line in
135 * the generic usage message.
136 */
137static zfs_command_t command_table[] = {
138 { "create", zfs_do_create, HELP_CREATE },
139 { "destroy", zfs_do_destroy, HELP_DESTROY },
140 { NULL },
141 { "snapshot", zfs_do_snapshot, HELP_SNAPSHOT },
142 { "rollback", zfs_do_rollback, HELP_ROLLBACK },
143 { "clone", zfs_do_clone, HELP_CLONE },
144 { "promote", zfs_do_promote, HELP_PROMOTE },
145 { "rename", zfs_do_rename, HELP_RENAME },
146 { NULL },
147 { "list", zfs_do_list, HELP_LIST },
148 { NULL },
149 { "set", zfs_do_set, HELP_SET },
150 { "get", zfs_do_get, HELP_GET },
151 { "inherit", zfs_do_inherit, HELP_INHERIT },
152 { "upgrade", zfs_do_upgrade, HELP_UPGRADE },
153 { NULL },
154 { "mount", zfs_do_mount, HELP_MOUNT },
155 { "unmount", zfs_do_unmount, HELP_UNMOUNT },
156 { "share", zfs_do_share, HELP_SHARE },
157 { "unshare", zfs_do_unshare, HELP_UNSHARE },
158 { NULL },
159 { "send", zfs_do_send, HELP_SEND },
160 { "receive", zfs_do_receive, HELP_RECEIVE },
161 { NULL },
162 { "allow", zfs_do_allow, HELP_ALLOW },
163 { NULL },
164 { "unallow", zfs_do_unallow, HELP_UNALLOW },
165};
166
167#define NCOMMAND (sizeof (command_table) / sizeof (command_table[0]))
168
169zfs_command_t *current_command;
170
171static const char *
172get_usage(zfs_help_t idx)
173{
174 switch (idx) {
175 case HELP_CLONE:
b128c09f
BB		 176 return (gettext("\tclone [-p] [-o property=value] ... "
177 "<snapshot> <filesystem|volume>\n"));
34dc7c2f
BB		 178 case HELP_CREATE:
179 return (gettext("\tcreate [-p] [-o property=value] ... "
180 "<filesystem>\n"
181 "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
182 "-V <size> <volume>\n"));
183 case HELP_DESTROY:
184 return (gettext("\tdestroy [-rRf] "
185 "<filesystem|volume|snapshot>\n"));
186 case HELP_GET:
187 return (gettext("\tget [-rHp] [-o field[,...]] "
188 "[-s source[,...]]\n"
189 "\t <\"all\" | property[,...]> "
190 "[filesystem|volume|snapshot] ...\n"));
191 case HELP_INHERIT:
192 return (gettext("\tinherit [-r] <property> "
b128c09f 193 "<filesystem|volume|snapshot> ...\n"));
34dc7c2f
BB		 194 case HELP_UPGRADE:
195 return (gettext("\tupgrade [-v]\n"
196 "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
197 case HELP_LIST:
198 return (gettext("\tlist [-rH] [-o property[,...]] "
199 "[-t type[,...]] [-s property] ...\n"
200 "\t [-S property] ... "
201 "[filesystem|volume|snapshot] ...\n"));
202 case HELP_MOUNT:
203 return (gettext("\tmount\n"
204 "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
205 case HELP_PROMOTE:
206 return (gettext("\tpromote <clone-filesystem>\n"));
207 case HELP_RECEIVE:
208 return (gettext("\treceive [-vnF] <filesystem|volume|"
209 "snapshot>\n"
210 "\treceive [-vnF] -d <filesystem>\n"));
211 case HELP_RENAME:
212 return (gettext("\trename <filesystem|volume|snapshot> "
213 "<filesystem|volume|snapshot>\n"
214 "\trename -p <filesystem|volume> <filesystem|volume>\n"
215 "\trename -r <snapshot> <snapshot>"));
216 case HELP_ROLLBACK:
217 return (gettext("\trollback [-rRf] <snapshot>\n"));
218 case HELP_SEND:
219 return (gettext("\tsend [-R] [-[iI] snapshot] <snapshot>\n"));
220 case HELP_SET:
221 return (gettext("\tset <property=value> "
b128c09f 222 "<filesystem|volume|snapshot> ...\n"));
34dc7c2f
BB		 223 case HELP_SHARE:
224 return (gettext("\tshare <-a | filesystem>\n"));
225 case HELP_SNAPSHOT:
b128c09f 226 return (gettext("\tsnapshot [-r] [-o property=value] ... "
34dc7c2f
BB		 227 "<filesystem@snapname|volume@snapname>\n"));
228 case HELP_UNMOUNT:
229 return (gettext("\tunmount [-f] "
230 "<-a | filesystem|mountpoint>\n"));
231 case HELP_UNSHARE:
232 return (gettext("\tunshare [-f] "
233 "<-a | filesystem|mountpoint>\n"));
234 case HELP_ALLOW:
235 return (gettext("\tallow [-ldug] "
236 "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
237 "\t <filesystem|volume>\n"
238 "\tallow [-ld] -e <perm|@setname>[,...] "
239 "<filesystem|volume>\n"
240 "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
241 "\tallow -s @setname <perm|@setname>[,...] "
242 "<filesystem|volume>\n"));
243 case HELP_UNALLOW:
244 return (gettext("\tunallow [-rldug] "
245 "<\"everyone\"|user|group>[,...]\n"
246 "\t [<perm|@setname>[,...]] <filesystem|volume>\n"
247 "\tunallow [-rld] -e [<perm|@setname>[,...]] "
248 "<filesystem|volume>\n"
249 "\tunallow [-r] -c [<perm|@setname>[,...]] "
250 "<filesystem|volume>\n"
251 "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
252 "<filesystem|volume>\n"));
253 }
254
255 abort();
256 /* NOTREACHED */
257}
258
259/*
260 * Utility function to guarantee malloc() success.
261 */
262void *
263safe_malloc(size_t size)
264{
265 void *data;
266
267 if ((data = calloc(1, size)) == NULL) {
268 (void) fprintf(stderr, "internal error: out of memory\n");
269 exit(1);
270 }
271
272 return (data);
273}
274
275/*
276 * Callback routine that will print out information for each of
277 * the properties.
278 */
279static int
280usage_prop_cb(int prop, void *cb)
281{
282 FILE *fp = cb;
283
b128c09f 284 (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
34dc7c2f 285
b128c09f
BB		 286 if (zfs_prop_readonly(prop))
287 (void) fprintf(fp, " NO ");
34dc7c2f 288 else
b128c09f 289 (void) fprintf(fp, "YES ");
34dc7c2f
BB		 290
291 if (zfs_prop_inheritable(prop))
292 (void) fprintf(fp, " YES ");
293 else
294 (void) fprintf(fp, " NO ");
295
296 if (zfs_prop_values(prop) == NULL)
297 (void) fprintf(fp, "-\n");
298 else
299 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
300
301 return (ZPROP_CONT);
302}
303
304/*
305 * Display usage message. If we're inside a command, display only the usage for
306 * that command. Otherwise, iterate over the entire command table and display
307 * a complete usage message.
308 */
309static void
310usage(boolean_t requested)
311{
312 int i;
313 boolean_t show_properties = B_FALSE;
314 boolean_t show_permissions = B_FALSE;
315 FILE *fp = requested ? stdout : stderr;
316
317 if (current_command == NULL) {
318
319 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
320 (void) fprintf(fp,
321 gettext("where 'command' is one of the following:\n\n"));
322
323 for (i = 0; i < NCOMMAND; i++) {
324 if (command_table[i].name == NULL)
325 (void) fprintf(fp, "\n");
326 else
327 (void) fprintf(fp, "%s",
328 get_usage(command_table[i].usage));
329 }
330
331 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
332 "pool/[dataset/]*dataset[@name]\n"));
333 } else {
334 (void) fprintf(fp, gettext("usage:\n"));
335 (void) fprintf(fp, "%s", get_usage(current_command->usage));
336 }
337
338 if (current_command != NULL &&
339 (strcmp(current_command->name, "set") == 0 ||
340 strcmp(current_command->name, "get") == 0 ||
341 strcmp(current_command->name, "inherit") == 0 ||
342 strcmp(current_command->name, "list") == 0))
343 show_properties = B_TRUE;
344
345 if (current_command != NULL &&
346 (strcmp(current_command->name, "allow") == 0 ||
347 strcmp(current_command->name, "unallow") == 0))
348 show_permissions = B_TRUE;
349
350 if (show_properties) {
351
352 (void) fprintf(fp,
353 gettext("\nThe following properties are supported:\n"));
354
355 (void) fprintf(fp, "\n\t%-14s %s %s %s\n\n",
356 "PROPERTY", "EDIT", "INHERIT", "VALUES");
357
358 /* Iterate over all properties */
359 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
360 ZFS_TYPE_DATASET);
361
362 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
363 "with standard units such as K, M, G, etc.\n"));
b128c09f 364 (void) fprintf(fp, gettext("\nUser-defined properties can "
34dc7c2f
BB		 365 "be specified by using a name containing a colon (:).\n"));
366
367 } else if (show_permissions) {
368 (void) fprintf(fp,
369 gettext("\nThe following permissions are supported:\n"));
370
371 zfs_deleg_permissions();
372 } else {
34dc7c2f 373 (void) fprintf(fp,
fb5f0bc8
BB		 374 gettext("\nFor the property list, run: %s\n"),
375 "zfs set|get");
34dc7c2f 376 (void) fprintf(fp,
fb5f0bc8
BB		 377 gettext("\nFor the delegated permission list, run: %s\n"),
378 "zfs allow|unallow");
34dc7c2f
BB		 379 }
380
381 /*
382 * See comments at end of main().
383 */
384 if (getenv("ZFS_ABORT") != NULL) {
385 (void) printf("dumping core by request\n");
386 abort();
387 }
388
389 exit(requested ? 0 : 2);
390}
391
b128c09f
BB		 392static int
393parseprop(nvlist_t *props)
394{
395 char *propname = optarg;
396 char *propval, *strval;
397
398 if ((propval = strchr(propname, '=')) == NULL) {
399 (void) fprintf(stderr, gettext("missing "
400 "'=' for -o option\n"));
401 return (-1);
402 }
403 *propval = '\0';
404 propval++;
405 if (nvlist_lookup_string(props, propname, &strval) == 0) {
406 (void) fprintf(stderr, gettext("property '%s' "
407 "specified multiple times\n"), propname);
408 return (-1);
409 }
410 if (nvlist_add_string(props, propname, propval) != 0) {
411 (void) fprintf(stderr, gettext("internal "
412 "error: out of memory\n"));
413 return (-1);
414 }
415 return (0);
b128c09f
BB		 416}
417
34dc7c2f 418/*
b128c09f 419 * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
34dc7c2f
BB		 420 *
421 * Given an existing dataset, create a writable copy whose initial contents
422 * are the same as the source. The newly created dataset maintains a
423 * dependency on the original; the original cannot be destroyed so long as
424 * the clone exists.
425 *
426 * The '-p' flag creates all the non-existing ancestors of the target first.
427 */
428static int
429zfs_do_clone(int argc, char **argv)
430{
b128c09f 431 zfs_handle_t *zhp = NULL;
34dc7c2f 432 boolean_t parents = B_FALSE;
b128c09f 433 nvlist_t *props;
34dc7c2f
BB		 434 int ret;
435 int c;
436
b128c09f
BB		 437 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
438 (void) fprintf(stderr, gettext("internal error: "
439 "out of memory\n"));
440 return (1);
441 }
442
34dc7c2f 443 /* check options */
b128c09f 444 while ((c = getopt(argc, argv, "o:p")) != -1) {
34dc7c2f 445 switch (c) {
b128c09f
BB		 446 case 'o':
447 if (parseprop(props))
448 return (1);
449 break;
34dc7c2f
BB		 450 case 'p':
451 parents = B_TRUE;
452 break;
453 case '?':
454 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
455 optopt);
b128c09f 456 goto usage;
34dc7c2f
BB		 457 }
458 }
459
460 argc -= optind;
461 argv += optind;
462
463 /* check number of arguments */
464 if (argc < 1) {
465 (void) fprintf(stderr, gettext("missing source dataset "
466 "argument\n"));
b128c09f 467 goto usage;
34dc7c2f
BB		 468 }
469 if (argc < 2) {
470 (void) fprintf(stderr, gettext("missing target dataset "
471 "argument\n"));
b128c09f 472 goto usage;
34dc7c2f
BB		 473 }
474 if (argc > 2) {
475 (void) fprintf(stderr, gettext("too many arguments\n"));
b128c09f 476 goto usage;
34dc7c2f
BB		 477 }
478
479 /* open the source dataset */
480 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
481 return (1);
482
483 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
484 ZFS_TYPE_VOLUME)) {
485 /*
486 * Now create the ancestors of the target dataset. If the
487 * target already exists and '-p' option was used we should not
488 * complain.
489 */
490 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
491 ZFS_TYPE_VOLUME))
492 return (0);
493 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
494 return (1);
495 }
496
497 /* pass to libzfs */
b128c09f 498 ret = zfs_clone(zhp, argv[1], props);
34dc7c2f
BB		 499
500 /* create the mountpoint if necessary */
501 if (ret == 0) {
502 zfs_handle_t *clone;
503
504 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
505 if (clone != NULL) {
506 if ((ret = zfs_mount(clone, NULL, 0)) == 0)
507 ret = zfs_share(clone);
508 zfs_close(clone);
509 }
510 }
511
512 zfs_close(zhp);
b128c09f 513 nvlist_free(props);
34dc7c2f 514
b128c09f
BB		 515 return (!!ret);
516
517usage:
518 if (zhp)
519 zfs_close(zhp);
520 nvlist_free(props);
521 usage(B_FALSE);
522 return (-1);
34dc7c2f
BB		 523}
524
525/*
526 * zfs create [-p] [-o prop=value] ... fs
527 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
528 *
529 * Create a new dataset. This command can be used to create filesystems
530 * and volumes. Snapshot creation is handled by 'zfs snapshot'.
531 * For volumes, the user must specify a size to be used.
532 *
533 * The '-s' flag applies only to volumes, and indicates that we should not try
534 * to set the reservation for this volume. By default we set a reservation
535 * equal to the size for any volume. For pools with SPA_VERSION >=
536 * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
537 *
538 * The '-p' flag creates all the non-existing ancestors of the target first.
539 */
540static int
541zfs_do_create(int argc, char **argv)
542{
543 zfs_type_t type = ZFS_TYPE_FILESYSTEM;
544 zfs_handle_t *zhp = NULL;
545 uint64_t volsize;
546 int c;
547 boolean_t noreserve = B_FALSE;
548 boolean_t bflag = B_FALSE;
549 boolean_t parents = B_FALSE;
550 int ret = 1;
b128c09f 551 nvlist_t *props;
34dc7c2f 552 uint64_t intval;
34dc7c2f
BB		 553 int canmount;
554
555 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
556 (void) fprintf(stderr, gettext("internal error: "
557 "out of memory\n"));
558 return (1);
559 }
560
561 /* check options */
562 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) {
563 switch (c) {
564 case 'V':
565 type = ZFS_TYPE_VOLUME;
566 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
567 (void) fprintf(stderr, gettext("bad volume "
568 "size '%s': %s\n"), optarg,
569 libzfs_error_description(g_zfs));
570 goto error;
571 }
572
573 if (nvlist_add_uint64(props,
574 zfs_prop_to_name(ZFS_PROP_VOLSIZE),
575 intval) != 0) {
576 (void) fprintf(stderr, gettext("internal "
577 "error: out of memory\n"));
578 goto error;
579 }
580 volsize = intval;
581 break;
582 case 'p':
583 parents = B_TRUE;
584 break;
585 case 'b':
586 bflag = B_TRUE;
587 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
588 (void) fprintf(stderr, gettext("bad volume "
589 "block size '%s': %s\n"), optarg,
590 libzfs_error_description(g_zfs));
591 goto error;
592 }
593
594 if (nvlist_add_uint64(props,
595 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
596 intval) != 0) {
597 (void) fprintf(stderr, gettext("internal "
598 "error: out of memory\n"));
599 goto error;
600 }
601 break;
602 case 'o':
b128c09f 603 if (parseprop(props))
34dc7c2f 604 goto error;
34dc7c2f
BB		 605 break;
606 case 's':
607 noreserve = B_TRUE;
608 break;
609 case ':':
610 (void) fprintf(stderr, gettext("missing size "
611 "argument\n"));
612 goto badusage;
613 break;
614 case '?':
615 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
616 optopt);
617 goto badusage;
618 }
619 }
620
621 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
622 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
623 "used when creating a volume\n"));
624 goto badusage;
625 }
626
627 argc -= optind;
628 argv += optind;
629
630 /* check number of arguments */
631 if (argc == 0) {
632 (void) fprintf(stderr, gettext("missing %s argument\n"),
633 zfs_type_to_name(type));
634 goto badusage;
635 }
636 if (argc > 1) {
637 (void) fprintf(stderr, gettext("too many arguments\n"));
638 goto badusage;
639 }
640
641 if (type == ZFS_TYPE_VOLUME && !noreserve) {
642 zpool_handle_t *zpool_handle;
643 uint64_t spa_version;
644 char *p;
645 zfs_prop_t resv_prop;
b128c09f 646 char *strval;
34dc7c2f
BB		 647
648 if (p = strchr(argv[0], '/'))
649 *p = '\0';
650 zpool_handle = zpool_open(g_zfs, argv[0]);
651 if (p != NULL)
652 *p = '/';
653 if (zpool_handle == NULL)
654 goto error;
655 spa_version = zpool_get_prop_int(zpool_handle,
656 ZPOOL_PROP_VERSION, NULL);
657 zpool_close(zpool_handle);
658 if (spa_version >= SPA_VERSION_REFRESERVATION)
659 resv_prop = ZFS_PROP_REFRESERVATION;
660 else
661 resv_prop = ZFS_PROP_RESERVATION;
662
663 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
664 &strval) != 0) {
665 if (nvlist_add_uint64(props,
666 zfs_prop_to_name(resv_prop), volsize) != 0) {
667 (void) fprintf(stderr, gettext("internal "
668 "error: out of memory\n"));
669 nvlist_free(props);
670 return (1);
671 }
672 }
673 }
674
675 if (parents && zfs_name_valid(argv[0], type)) {
676 /*
677 * Now create the ancestors of target dataset. If the target
678 * already exists and '-p' option was used we should not
679 * complain.
680 */
681 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
682 ret = 0;
683 goto error;
684 }
685 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
686 goto error;
687 }
688
689 /* pass to libzfs */
690 if (zfs_create(g_zfs, argv[0], type, props) != 0)
691 goto error;
692
693 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
694 goto error;
695 /*
696 * if the user doesn't want the dataset automatically mounted,
697 * then skip the mount/share step
698 */
699
700 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
701
702 /*
703 * Mount and/or share the new filesystem as appropriate. We provide a
704 * verbose error message to let the user know that their filesystem was
705 * in fact created, even if we failed to mount or share it.
706 */
707 ret = 0;
708 if (canmount == ZFS_CANMOUNT_ON) {
709 if (zfs_mount(zhp, NULL, 0) != 0) {
710 (void) fprintf(stderr, gettext("filesystem "
711 "successfully created, but not mounted\n"));
712 ret = 1;
713 } else if (zfs_share(zhp) != 0) {
714 (void) fprintf(stderr, gettext("filesystem "
715 "successfully created, but not shared\n"));
716 ret = 1;
717 }
718 }
719
720error:
721 if (zhp)
722 zfs_close(zhp);
723 nvlist_free(props);
724 return (ret);
725badusage:
726 nvlist_free(props);
727 usage(B_FALSE);
728 return (2);
729}
730
731/*
732 * zfs destroy [-rf] <fs, snap, vol>
733 *
734 * -r Recursively destroy all children
735 * -R Recursively destroy all dependents, including clones
736 * -f Force unmounting of any dependents
737 *
738 * Destroys the given dataset. By default, it will unmount any filesystems,
739 * and refuse to destroy a dataset that has any dependents. A dependent can
740 * either be a child, or a clone of a child.
741 */
742typedef struct destroy_cbdata {
743 boolean_t cb_first;
744 int cb_force;
745 int cb_recurse;
746 int cb_error;
747 int cb_needforce;
748 int cb_doclones;
749 boolean_t cb_closezhp;
750 zfs_handle_t *cb_target;
751 char *cb_snapname;
752} destroy_cbdata_t;
753
754/*
755 * Check for any dependents based on the '-r' or '-R' flags.
756 */
757static int
758destroy_check_dependent(zfs_handle_t *zhp, void *data)
759{
760 destroy_cbdata_t *cbp = data;
761 const char *tname = zfs_get_name(cbp->cb_target);
762 const char *name = zfs_get_name(zhp);
763
764 if (strncmp(tname, name, strlen(tname)) == 0 &&
765 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
766 /*
767 * This is a direct descendant, not a clone somewhere else in
768 * the hierarchy.
769 */
770 if (cbp->cb_recurse)
771 goto out;
772
773 if (cbp->cb_first) {
774 (void) fprintf(stderr, gettext("cannot destroy '%s': "
775 "%s has children\n"),
776 zfs_get_name(cbp->cb_target),
777 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
778 (void) fprintf(stderr, gettext("use '-r' to destroy "
779 "the following datasets:\n"));
780 cbp->cb_first = B_FALSE;
781 cbp->cb_error = 1;
782 }
783
784 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
785 } else {
786 /*
787 * This is a clone. We only want to report this if the '-r'
788 * wasn't specified, or the target is a snapshot.
789 */
790 if (!cbp->cb_recurse &&
791 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
792 goto out;
793
794 if (cbp->cb_first) {
795 (void) fprintf(stderr, gettext("cannot destroy '%s': "
796 "%s has dependent clones\n"),
797 zfs_get_name(cbp->cb_target),
798 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
799 (void) fprintf(stderr, gettext("use '-R' to destroy "
800 "the following datasets:\n"));
801 cbp->cb_first = B_FALSE;
802 cbp->cb_error = 1;
803 }
804
805 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
806 }
807
808out:
809 zfs_close(zhp);
810 return (0);
811}
812
813static int
814destroy_callback(zfs_handle_t *zhp, void *data)
815{
816 destroy_cbdata_t *cbp = data;
817
818 /*
819 * Ignore pools (which we've already flagged as an error before getting
820 * here.
821 */
822 if (strchr(zfs_get_name(zhp), '/') == NULL &&
823 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
824 zfs_close(zhp);
825 return (0);
826 }
827
828 /*
829 * Bail out on the first error.
830 */
831 if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 ||
832 zfs_destroy(zhp) != 0) {
833 zfs_close(zhp);
834 return (-1);
835 }
836
837 zfs_close(zhp);
838 return (0);
839}
840
841static int
842destroy_snap_clones(zfs_handle_t *zhp, void *arg)
843{
844 destroy_cbdata_t *cbp = arg;
845 char thissnap[MAXPATHLEN];
846 zfs_handle_t *szhp;
847 boolean_t closezhp = cbp->cb_closezhp;
848 int rv;
849
850 (void) snprintf(thissnap, sizeof (thissnap),
851 "%s@%s", zfs_get_name(zhp), cbp->cb_snapname);
852
853 libzfs_print_on_error(g_zfs, B_FALSE);
854 szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT);
855 libzfs_print_on_error(g_zfs, B_TRUE);
856 if (szhp) {
857 /*
858 * Destroy any clones of this snapshot
859 */
860 if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback,
861 cbp) != 0) {
862 zfs_close(szhp);
863 if (closezhp)
864 zfs_close(zhp);
865 return (-1);
866 }
867 zfs_close(szhp);
868 }
869
870 cbp->cb_closezhp = B_TRUE;
871 rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg);
872 if (closezhp)
873 zfs_close(zhp);
874 return (rv);
875}
876
877static int
878zfs_do_destroy(int argc, char **argv)
879{
880 destroy_cbdata_t cb = { 0 };
881 int c;
882 zfs_handle_t *zhp;
883 char *cp;
884
885 /* check options */
886 while ((c = getopt(argc, argv, "frR")) != -1) {
887 switch (c) {
888 case 'f':
889 cb.cb_force = 1;
890 break;
891 case 'r':
892 cb.cb_recurse = 1;
893 break;
894 case 'R':
895 cb.cb_recurse = 1;
896 cb.cb_doclones = 1;
897 break;
898 case '?':
899 default:
900 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
901 optopt);
902 usage(B_FALSE);
903 }
904 }
905
906 argc -= optind;
907 argv += optind;
908
909 /* check number of arguments */
910 if (argc == 0) {
911 (void) fprintf(stderr, gettext("missing path argument\n"));
912 usage(B_FALSE);
913 }
914 if (argc > 1) {
915 (void) fprintf(stderr, gettext("too many arguments\n"));
916 usage(B_FALSE);
917 }
918
919 /*
920 * If we are doing recursive destroy of a snapshot, then the
921 * named snapshot may not exist. Go straight to libzfs.
922 */
923 if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) {
924 int ret;
925
926 *cp = '\0';
927 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
928 return (1);
929 *cp = '@';
930 cp++;
931
932 if (cb.cb_doclones) {
933 cb.cb_snapname = cp;
934 if (destroy_snap_clones(zhp, &cb) != 0) {
935 zfs_close(zhp);
936 return (1);
937 }
938 }
939
940 ret = zfs_destroy_snaps(zhp, cp);
941 zfs_close(zhp);
942 if (ret) {
943 (void) fprintf(stderr,
944 gettext("no snapshots destroyed\n"));
945 }
946 return (ret != 0);
947 }
948
949
950 /* Open the given dataset */
951 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
952 return (1);
953
954 cb.cb_target = zhp;
955
956 /*
957 * Perform an explicit check for pools before going any further.
958 */
959 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
960 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
961 (void) fprintf(stderr, gettext("cannot destroy '%s': "
962 "operation does not apply to pools\n"),
963 zfs_get_name(zhp));
964 (void) fprintf(stderr, gettext("use 'zfs destroy -r "
965 "%s' to destroy all datasets in the pool\n"),
966 zfs_get_name(zhp));
967 (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
968 "to destroy the pool itself\n"), zfs_get_name(zhp));
969 zfs_close(zhp);
970 return (1);
971 }
972
973 /*
974 * Check for any dependents and/or clones.
975 */
976 cb.cb_first = B_TRUE;
977 if (!cb.cb_doclones &&
978 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
979 &cb) != 0) {
980 zfs_close(zhp);
981 return (1);
982 }
983
984 if (cb.cb_error ||
985 zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0) {
986 zfs_close(zhp);
987 return (1);
988 }
989
990 /*
991 * Do the real thing. The callback will close the handle regardless of
992 * whether it succeeds or not.
993 */
994
995 if (destroy_callback(zhp, &cb) != 0)
996 return (1);
997
998
999 return (0);
1000}
1001
1002/*
1003 * zfs get [-rHp] [-o field[,field]...] [-s source[,source]...]
1004 * < all | property[,property]... > < fs | snap | vol > ...
1005 *
1006 * -r recurse over any child datasets
1007 * -H scripted mode. Headers are stripped, and fields are separated
1008 * by tabs instead of spaces.
1009 * -o Set of fields to display. One of "name,property,value,source".
1010 * Default is all four.
1011 * -s Set of sources to allow. One of
1012 * "local,default,inherited,temporary,none". Default is all
1013 * five.
1014 * -p Display values in parsable (literal) format.
1015 *
1016 * Prints properties for the given datasets. The user can control which
1017 * columns to display as well as which property types to allow.
1018 */
1019
1020/*
1021 * Invoked to display the properties for a single dataset.
1022 */
1023static int
1024get_callback(zfs_handle_t *zhp, void *data)
1025{
1026 char buf[ZFS_MAXPROPLEN];
1027 zprop_source_t sourcetype;
1028 char source[ZFS_MAXNAMELEN];
1029 zprop_get_cbdata_t *cbp = data;
1030 nvlist_t *userprop = zfs_get_user_props(zhp);
1031 zprop_list_t *pl = cbp->cb_proplist;
1032 nvlist_t *propval;
1033 char *strval;
1034 char *sourceval;
1035
1036 for (; pl != NULL; pl = pl->pl_next) {
1037 /*
1038 * Skip the special fake placeholder. This will also skip over
1039 * the name property when 'all' is specified.
1040 */
1041 if (pl->pl_prop == ZFS_PROP_NAME &&
1042 pl == cbp->cb_proplist)
1043 continue;
1044
1045 if (pl->pl_prop != ZPROP_INVAL) {
1046 if (zfs_prop_get(zhp, pl->pl_prop, buf,
1047 sizeof (buf), &sourcetype, source,
1048 sizeof (source),
1049 cbp->cb_literal) != 0) {
1050 if (pl->pl_all)
1051 continue;
1052 if (!zfs_prop_valid_for_type(pl->pl_prop,
1053 ZFS_TYPE_DATASET)) {
1054 (void) fprintf(stderr,
1055 gettext("No such property '%s'\n"),
1056 zfs_prop_to_name(pl->pl_prop));
1057 continue;
1058 }
1059 sourcetype = ZPROP_SRC_NONE;
1060 (void) strlcpy(buf, "-", sizeof (buf));
1061 }
1062
1063 zprop_print_one_property(zfs_get_name(zhp), cbp,
1064 zfs_prop_to_name(pl->pl_prop),
1065 buf, sourcetype, source);
1066 } else {
1067 if (nvlist_lookup_nvlist(userprop,
1068 pl->pl_user_prop, &propval) != 0) {
1069 if (pl->pl_all)
1070 continue;
1071 sourcetype = ZPROP_SRC_NONE;
1072 strval = "-";
1073 } else {
1074 verify(nvlist_lookup_string(propval,
1075 ZPROP_VALUE, &strval) == 0);
1076 verify(nvlist_lookup_string(propval,
1077 ZPROP_SOURCE, &sourceval) == 0);
1078
1079 if (strcmp(sourceval,
1080 zfs_get_name(zhp)) == 0) {
1081 sourcetype = ZPROP_SRC_LOCAL;
1082 } else {
1083 sourcetype = ZPROP_SRC_INHERITED;
1084 (void) strlcpy(source,
1085 sourceval, sizeof (source));
1086 }
1087 }
1088
1089 zprop_print_one_property(zfs_get_name(zhp), cbp,
1090 pl->pl_user_prop, strval, sourcetype,
1091 source);
1092 }
1093 }
1094
1095 return (0);
1096}
1097
1098static int
1099zfs_do_get(int argc, char **argv)
1100{
1101 zprop_get_cbdata_t cb = { 0 };
b128c09f 1102 int i, c, flags = 0;
34dc7c2f
BB		 1103 char *value, *fields;
1104 int ret;
1105 zprop_list_t fake_name = { 0 };
1106
1107 /*
1108 * Set up default columns and sources.
1109 */
1110 cb.cb_sources = ZPROP_SRC_ALL;
1111 cb.cb_columns[0] = GET_COL_NAME;
1112 cb.cb_columns[1] = GET_COL_PROPERTY;
1113 cb.cb_columns[2] = GET_COL_VALUE;
1114 cb.cb_columns[3] = GET_COL_SOURCE;
1115 cb.cb_type = ZFS_TYPE_DATASET;
1116
1117 /* check options */
1118 while ((c = getopt(argc, argv, ":o:s:rHp")) != -1) {
1119 switch (c) {
1120 case 'p':
1121 cb.cb_literal = B_TRUE;
1122 break;
1123 case 'r':
b128c09f 1124 flags |= ZFS_ITER_RECURSE;
34dc7c2f
BB		 1125 break;
1126 case 'H':
1127 cb.cb_scripted = B_TRUE;
1128 break;
1129 case ':':
1130 (void) fprintf(stderr, gettext("missing argument for "
1131 "'%c' option\n"), optopt);
1132 usage(B_FALSE);
1133 break;
1134 case 'o':
1135 /*
1136 * Process the set of columns to display. We zero out
1137 * the structure to give us a blank slate.
1138 */
1139 bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1140 i = 0;
1141 while (*optarg != '\0') {
1142 static char *col_subopts[] =
1143 { "name", "property", "value", "source",
1144 NULL };
1145
1146 if (i == 4) {
1147 (void) fprintf(stderr, gettext("too "
1148 "many fields given to -o "
1149 "option\n"));
1150 usage(B_FALSE);
1151 }
1152
1153 switch (getsubopt(&optarg, col_subopts,
1154 &value)) {
1155 case 0:
1156 cb.cb_columns[i++] = GET_COL_NAME;
1157 break;
1158 case 1:
1159 cb.cb_columns[i++] = GET_COL_PROPERTY;
1160 break;
1161 case 2:
1162 cb.cb_columns[i++] = GET_COL_VALUE;
1163 break;
1164 case 3:
1165 cb.cb_columns[i++] = GET_COL_SOURCE;
1166 break;
1167 default:
1168 (void) fprintf(stderr,
1169 gettext("invalid column name "
1170 "'%s'\n"), value);
1171 usage(B_FALSE);
1172 }
1173 }
1174 break;
1175
1176 case 's':
1177 cb.cb_sources = 0;
1178 while (*optarg != '\0') {
1179 static char *source_subopts[] = {
1180 "local", "default", "inherited",
1181 "temporary", "none", NULL };
1182
1183 switch (getsubopt(&optarg, source_subopts,
1184 &value)) {
1185 case 0:
1186 cb.cb_sources |= ZPROP_SRC_LOCAL;
1187 break;
1188 case 1:
1189 cb.cb_sources |= ZPROP_SRC_DEFAULT;
1190 break;
1191 case 2:
1192 cb.cb_sources |= ZPROP_SRC_INHERITED;
1193 break;
1194 case 3:
1195 cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1196 break;
1197 case 4:
1198 cb.cb_sources |= ZPROP_SRC_NONE;
1199 break;
1200 default:
1201 (void) fprintf(stderr,
1202 gettext("invalid source "
1203 "'%s'\n"), value);
1204 usage(B_FALSE);
1205 }
1206 }
1207 break;
1208
1209 case '?':
1210 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1211 optopt);
1212 usage(B_FALSE);
1213 }
1214 }
1215
1216 argc -= optind;
1217 argv += optind;
1218
1219 if (argc < 1) {
1220 (void) fprintf(stderr, gettext("missing property "
1221 "argument\n"));
1222 usage(B_FALSE);
1223 }
1224
1225 fields = argv[0];
1226
1227 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1228 != 0)
1229 usage(B_FALSE);
1230
1231 argc--;
1232 argv++;
1233
1234 /*
1235 * As part of zfs_expand_proplist(), we keep track of the maximum column
1236 * width for each property. For the 'NAME' (and 'SOURCE') columns, we
1237 * need to know the maximum name length. However, the user likely did
1238 * not specify 'name' as one of the properties to fetch, so we need to
1239 * make sure we always include at least this property for
1240 * print_get_headers() to work properly.
1241 */
1242 if (cb.cb_proplist != NULL) {
1243 fake_name.pl_prop = ZFS_PROP_NAME;
1244 fake_name.pl_width = strlen(gettext("NAME"));
1245 fake_name.pl_next = cb.cb_proplist;
1246 cb.cb_proplist = &fake_name;
1247 }
1248
1249 cb.cb_first = B_TRUE;
1250
1251 /* run for each object */
b128c09f
BB		 1252 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, NULL,
1253 &cb.cb_proplist, get_callback, &cb);
34dc7c2f
BB		 1254
1255 if (cb.cb_proplist == &fake_name)
1256 zprop_free_list(fake_name.pl_next);
1257 else
1258 zprop_free_list(cb.cb_proplist);
1259
1260 return (ret);
1261}
1262
1263/*
1264 * inherit [-r] <property> <fs|vol> ...
1265 *
1266 * -r Recurse over all children
1267 *
1268 * For each dataset specified on the command line, inherit the given property
1269 * from its parent. Inheriting a property at the pool level will cause it to
1270 * use the default value. The '-r' flag will recurse over all children, and is
1271 * useful for setting a property on a hierarchy-wide basis, regardless of any
1272 * local modifications for each dataset.
1273 */
1274
1275static int
b128c09f 1276inherit_recurse_cb(zfs_handle_t *zhp, void *data)
34dc7c2f
BB		 1277{
1278 char *propname = data;
b128c09f 1279 zfs_prop_t prop = zfs_name_to_prop(propname);
34dc7c2f 1280
b128c09f
BB		 1281 /*
1282 * If we're doing it recursively, then ignore properties that
1283 * are not valid for this type of dataset.
1284 */
1285 if (prop != ZPROP_INVAL &&
1286 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1287 return (0);
1288
1289 return (zfs_prop_inherit(zhp, propname) != 0);
1290}
1291
1292static int
1293inherit_cb(zfs_handle_t *zhp, void *data)
1294{
1295 char *propname = data;
1296
1297 return (zfs_prop_inherit(zhp, propname) != 0);
34dc7c2f
BB		 1298}
1299
1300static int
1301zfs_do_inherit(int argc, char **argv)
1302{
34dc7c2f
BB		 1303 int c;
1304 zfs_prop_t prop;
1305 char *propname;
1306 int ret;
b128c09f 1307 int flags = 0;
34dc7c2f
BB		 1308
1309 /* check options */
1310 while ((c = getopt(argc, argv, "r")) != -1) {
1311 switch (c) {
1312 case 'r':
b128c09f 1313 flags |= ZFS_ITER_RECURSE;
34dc7c2f
BB		 1314 break;
1315 case '?':
1316 default:
1317 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1318 optopt);
1319 usage(B_FALSE);
1320 }
1321 }
1322
1323 argc -= optind;
1324 argv += optind;
1325
1326 /* check number of arguments */
1327 if (argc < 1) {
1328 (void) fprintf(stderr, gettext("missing property argument\n"));
1329 usage(B_FALSE);
1330 }
1331 if (argc < 2) {
1332 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1333 usage(B_FALSE);
1334 }
1335
1336 propname = argv[0];
1337 argc--;
1338 argv++;
1339
1340 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1341 if (zfs_prop_readonly(prop)) {
1342 (void) fprintf(stderr, gettext(
1343 "%s property is read-only\n"),
1344 propname);
1345 return (1);
1346 }
1347 if (!zfs_prop_inheritable(prop)) {
1348 (void) fprintf(stderr, gettext("'%s' property cannot "
1349 "be inherited\n"), propname);
1350 if (prop == ZFS_PROP_QUOTA ||
1351 prop == ZFS_PROP_RESERVATION ||
1352 prop == ZFS_PROP_REFQUOTA ||
1353 prop == ZFS_PROP_REFRESERVATION)
1354 (void) fprintf(stderr, gettext("use 'zfs set "
1355 "%s=none' to clear\n"), propname);
1356 return (1);
1357 }
1358 } else if (!zfs_prop_user(propname)) {
1359 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1360 propname);
1361 usage(B_FALSE);
1362 }
1363
b128c09f
BB		 1364 if (flags & ZFS_ITER_RECURSE) {
1365 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1366 NULL, NULL, inherit_recurse_cb, propname);
1367 } else {
1368 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1369 NULL, NULL, inherit_cb, propname);
1370 }
34dc7c2f
BB		 1371
1372 return (ret);
1373}
1374
1375typedef struct upgrade_cbdata {
1376 uint64_t cb_numupgraded;
1377 uint64_t cb_numsamegraded;
1378 uint64_t cb_numfailed;
1379 uint64_t cb_version;
1380 boolean_t cb_newer;
1381 boolean_t cb_foundone;
1382 char cb_lastfs[ZFS_MAXNAMELEN];
1383} upgrade_cbdata_t;
1384
1385static int
1386same_pool(zfs_handle_t *zhp, const char *name)
1387{
1388 int len1 = strcspn(name, "/@");
1389 const char *zhname = zfs_get_name(zhp);
1390 int len2 = strcspn(zhname, "/@");
1391
1392 if (len1 != len2)
1393 return (B_FALSE);
1394 return (strncmp(name, zhname, len1) == 0);
1395}
1396
1397static int
1398upgrade_list_callback(zfs_handle_t *zhp, void *data)
1399{
1400 upgrade_cbdata_t *cb = data;
1401 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1402
1403 /* list if it's old/new */
1404 if ((!cb->cb_newer && version < ZPL_VERSION) ||
1405 (cb->cb_newer && version > ZPL_VERSION)) {
1406 char *str;
1407 if (cb->cb_newer) {
1408 str = gettext("The following filesystems are "
1409 "formatted using a newer software version and\n"
1410 "cannot be accessed on the current system.\n\n");
1411 } else {
1412 str = gettext("The following filesystems are "
1413 "out of date, and can be upgraded. After being\n"
1414 "upgraded, these filesystems (and any 'zfs send' "
1415 "streams generated from\n"
1416 "subsequent snapshots) will no longer be "
1417 "accessible by older software versions.\n\n");
1418 }
1419
1420 if (!cb->cb_foundone) {
1421 (void) puts(str);
1422 (void) printf(gettext("VER FILESYSTEM\n"));
1423 (void) printf(gettext("--- ------------\n"));
1424 cb->cb_foundone = B_TRUE;
1425 }
1426
1427 (void) printf("%2u %s\n", version, zfs_get_name(zhp));
1428 }
1429
1430 return (0);
1431}
1432
1433static int
1434upgrade_set_callback(zfs_handle_t *zhp, void *data)
1435{
1436 upgrade_cbdata_t *cb = data;
1437 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1438
1439 if (cb->cb_version >= ZPL_VERSION_FUID) {
1440 int spa_version;
1441
1442 if (zfs_spa_version(zhp, &spa_version) < 0)
1443 return (-1);
1444
1445 if (spa_version < SPA_VERSION_FUID) {
1446 /* can't upgrade */
1447 (void) printf(gettext("%s: can not be upgraded; "
1448 "the pool version needs to first be upgraded\nto "
1449 "version %d\n\n"),
1450 zfs_get_name(zhp), SPA_VERSION_FUID);
1451 cb->cb_numfailed++;
1452 return (0);
1453 }
1454 }
1455
1456 /* upgrade */
1457 if (version < cb->cb_version) {
1458 char verstr[16];
1459 (void) snprintf(verstr, sizeof (verstr),
1460 "%llu", cb->cb_version);
1461 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
1462 /*
1463 * If they did "zfs upgrade -a", then we could
1464 * be doing ioctls to different pools. We need
1465 * to log this history once to each pool.
1466 */
1467 verify(zpool_stage_history(g_zfs, history_str) == 0);
1468 }
1469 if (zfs_prop_set(zhp, "version", verstr) == 0)
1470 cb->cb_numupgraded++;
1471 else
1472 cb->cb_numfailed++;
1473 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
1474 } else if (version > cb->cb_version) {
1475 /* can't downgrade */
1476 (void) printf(gettext("%s: can not be downgraded; "
1477 "it is already at version %u\n"),
1478 zfs_get_name(zhp), version);
1479 cb->cb_numfailed++;
1480 } else {
1481 cb->cb_numsamegraded++;
1482 }
1483 return (0);
1484}
1485
1486/*
1487 * zfs upgrade
1488 * zfs upgrade -v
1489 * zfs upgrade [-r] [-V <version>] <-a | filesystem>
1490 */
1491static int
1492zfs_do_upgrade(int argc, char **argv)
1493{
34dc7c2f
BB		 1494 boolean_t all = B_FALSE;
1495 boolean_t showversions = B_FALSE;
1496 int ret;
1497 upgrade_cbdata_t cb = { 0 };
1498 char c;
b128c09f 1499 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
34dc7c2f
BB		 1500
1501 /* check options */
1502 while ((c = getopt(argc, argv, "rvV:a")) != -1) {
1503 switch (c) {
1504 case 'r':
b128c09f 1505 flags |= ZFS_ITER_RECURSE;
34dc7c2f
BB		 1506 break;
1507 case 'v':
1508 showversions = B_TRUE;
1509 break;
1510 case 'V':
1511 if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
1512 optarg, &cb.cb_version) != 0) {
1513 (void) fprintf(stderr,
1514 gettext("invalid version %s\n"), optarg);
1515 usage(B_FALSE);
1516 }
1517 break;
1518 case 'a':
1519 all = B_TRUE;
1520 break;
1521 case '?':
1522 default:
1523 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1524 optopt);
1525 usage(B_FALSE);
1526 }
1527 }
1528
1529 argc -= optind;
1530 argv += optind;
1531
b128c09f 1532 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
34dc7c2f 1533 usage(B_FALSE);
b128c09f
BB		 1534 if (showversions && (flags & ZFS_ITER_RECURSE || all ||
1535 cb.cb_version || argc))
34dc7c2f
BB		 1536 usage(B_FALSE);
1537 if ((all || argc) && (showversions))
1538 usage(B_FALSE);
1539 if (all && argc)
1540 usage(B_FALSE);
1541
1542 if (showversions) {
1543 /* Show info on available versions. */
1544 (void) printf(gettext("The following filesystem versions are "
1545 "supported:\n\n"));
1546 (void) printf(gettext("VER DESCRIPTION\n"));
1547 (void) printf("--- -----------------------------------------"
1548 "---------------\n");
1549 (void) printf(gettext(" 1 Initial ZFS filesystem version\n"));
1550 (void) printf(gettext(" 2 Enhanced directory entries\n"));
1551 (void) printf(gettext(" 3 Case insensitive and File system "
1552 "unique identifer (FUID)\n"));
1553 (void) printf(gettext("\nFor more information on a particular "
1554 "version, including supported releases, see:\n\n"));
1555 (void) printf("http://www.opensolaris.org/os/community/zfs/"
1556 "version/zpl/N\n\n");
1557 (void) printf(gettext("Where 'N' is the version number.\n"));
1558 ret = 0;
1559 } else if (argc || all) {
1560 /* Upgrade filesystems */
1561 if (cb.cb_version == 0)
1562 cb.cb_version = ZPL_VERSION;
b128c09f
BB		 1563 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
1564 NULL, NULL, upgrade_set_callback, &cb);
34dc7c2f
BB		 1565 (void) printf(gettext("%llu filesystems upgraded\n"),
1566 cb.cb_numupgraded);
1567 if (cb.cb_numsamegraded) {
1568 (void) printf(gettext("%llu filesystems already at "
1569 "this version\n"),
1570 cb.cb_numsamegraded);
1571 }
1572 if (cb.cb_numfailed != 0)
1573 ret = 1;
1574 } else {
1575 /* List old-version filesytems */
1576 boolean_t found;
1577 (void) printf(gettext("This system is currently running "
1578 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
1579
b128c09f
BB		 1580 flags |= ZFS_ITER_RECURSE;
1581 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
1582 NULL, NULL, upgrade_list_callback, &cb);
34dc7c2f
BB		 1583
1584 found = cb.cb_foundone;
1585 cb.cb_foundone = B_FALSE;
1586 cb.cb_newer = B_TRUE;
1587
b128c09f
BB		 1588 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
1589 NULL, NULL, upgrade_list_callback, &cb);
34dc7c2f
BB		 1590
1591 if (!cb.cb_foundone && !found) {
1592 (void) printf(gettext("All filesystems are "
1593 "formatted with the current version.\n"));
1594 }
1595 }
1596
1597 return (ret);
1598}
1599
1600/*
1601 * list [-rH] [-o property[,property]...] [-t type[,type]...]
1602 * [-s property [-s property]...] [-S property [-S property]...]
1603 * <dataset> ...
1604 *
1605 * -r Recurse over all children
1606 * -H Scripted mode; elide headers and separate columns by tabs
1607 * -o Control which fields to display.
1608 * -t Control which object types to display.
1609 * -s Specify sort columns, descending order.
1610 * -S Specify sort columns, ascending order.
1611 *
1612 * When given no arguments, lists all filesystems in the system.
1613 * Otherwise, list the specified datasets, optionally recursing down them if
1614 * '-r' is specified.
1615 */
1616typedef struct list_cbdata {
1617 boolean_t cb_first;
1618 boolean_t cb_scripted;
1619 zprop_list_t *cb_proplist;
1620} list_cbdata_t;
1621
1622/*
1623 * Given a list of columns to display, output appropriate headers for each one.
1624 */
1625static void
1626print_header(zprop_list_t *pl)
1627{
1628 char headerbuf[ZFS_MAXPROPLEN];
1629 const char *header;
1630 int i;
1631 boolean_t first = B_TRUE;
1632 boolean_t right_justify;
1633
1634 for (; pl != NULL; pl = pl->pl_next) {
1635 if (!first) {
1636 (void) printf(" ");
1637 } else {
1638 first = B_FALSE;
1639 }
1640
1641 right_justify = B_FALSE;
1642 if (pl->pl_prop != ZPROP_INVAL) {
1643 header = zfs_prop_column_name(pl->pl_prop);
1644 right_justify = zfs_prop_align_right(pl->pl_prop);
1645 } else {
1646 for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
1647 headerbuf[i] = toupper(pl->pl_user_prop[i]);
1648 headerbuf[i] = '\0';
1649 header = headerbuf;
1650 }
1651
1652 if (pl->pl_next == NULL && !right_justify)
1653 (void) printf("%s", header);
1654 else if (right_justify)
1655 (void) printf("%*s", pl->pl_width, header);
1656 else
1657 (void) printf("%-*s", pl->pl_width, header);
1658 }
1659
1660 (void) printf("\n");
1661}
1662
1663/*
1664 * Given a dataset and a list of fields, print out all the properties according
1665 * to the described layout.
1666 */
1667static void
1668print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted)
1669{
1670 boolean_t first = B_TRUE;
1671 char property[ZFS_MAXPROPLEN];
1672 nvlist_t *userprops = zfs_get_user_props(zhp);
1673 nvlist_t *propval;
1674 char *propstr;
1675 boolean_t right_justify;
1676 int width;
1677
1678 for (; pl != NULL; pl = pl->pl_next) {
1679 if (!first) {
1680 if (scripted)
1681 (void) printf("\t");
1682 else
1683 (void) printf(" ");
1684 } else {
1685 first = B_FALSE;
1686 }
1687
1688 right_justify = B_FALSE;
1689 if (pl->pl_prop != ZPROP_INVAL) {
1690 if (zfs_prop_get(zhp, pl->pl_prop, property,
1691 sizeof (property), NULL, NULL, 0, B_FALSE) != 0)
1692 propstr = "-";
1693 else
1694 propstr = property;
1695
1696 right_justify = zfs_prop_align_right(pl->pl_prop);
1697 } else {
1698 if (nvlist_lookup_nvlist(userprops,
1699 pl->pl_user_prop, &propval) != 0)
1700 propstr = "-";
1701 else
1702 verify(nvlist_lookup_string(propval,
1703 ZPROP_VALUE, &propstr) == 0);
1704 }
1705
1706 width = pl->pl_width;
1707
1708 /*
1709 * If this is being called in scripted mode, or if this is the
1710 * last column and it is left-justified, don't include a width
1711 * format specifier.
1712 */
1713 if (scripted || (pl->pl_next == NULL && !right_justify))
1714 (void) printf("%s", propstr);
1715 else if (right_justify)
1716 (void) printf("%*s", width, propstr);
1717 else
1718 (void) printf("%-*s", width, propstr);
1719 }
1720
1721 (void) printf("\n");
1722}
1723
1724/*
1725 * Generic callback function to list a dataset or snapshot.
1726 */
1727static int
1728list_callback(zfs_handle_t *zhp, void *data)
1729{
1730 list_cbdata_t *cbp = data;
1731
1732 if (cbp->cb_first) {
1733 if (!cbp->cb_scripted)
1734 print_header(cbp->cb_proplist);
1735 cbp->cb_first = B_FALSE;
1736 }
1737
1738 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted);
1739
1740 return (0);
1741}
1742
1743static int
1744zfs_do_list(int argc, char **argv)
1745{
1746 int c;
34dc7c2f
BB		 1747 boolean_t scripted = B_FALSE;
1748 static char default_fields[] =
1749 "name,used,available,referenced,mountpoint";
d164b209 1750 int types = ZFS_TYPE_DATASET;
b128c09f 1751 boolean_t types_specified = B_FALSE;
34dc7c2f 1752 char *fields = NULL;
34dc7c2f
BB		 1753 list_cbdata_t cb = { 0 };
1754 char *value;
1755 int ret;
34dc7c2f 1756 zfs_sort_column_t *sortcol = NULL;
b128c09f 1757 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
34dc7c2f
BB		 1758
1759 /* check options */
1760 while ((c = getopt(argc, argv, ":o:rt:Hs:S:")) != -1) {
1761 switch (c) {
1762 case 'o':
1763 fields = optarg;
1764 break;
1765 case 'r':
b128c09f 1766 flags |= ZFS_ITER_RECURSE;
34dc7c2f
BB		 1767 break;
1768 case 'H':
1769 scripted = B_TRUE;
1770 break;
1771 case 's':
1772 if (zfs_add_sort_column(&sortcol, optarg,
1773 B_FALSE) != 0) {
1774 (void) fprintf(stderr,
1775 gettext("invalid property '%s'\n"), optarg);
1776 usage(B_FALSE);
1777 }
1778 break;
1779 case 'S':
1780 if (zfs_add_sort_column(&sortcol, optarg,
1781 B_TRUE) != 0) {
1782 (void) fprintf(stderr,
1783 gettext("invalid property '%s'\n"), optarg);
1784 usage(B_FALSE);
1785 }
1786 break;
1787 case 't':
1788 types = 0;
b128c09f
BB		 1789 types_specified = B_TRUE;
1790 flags &= ~ZFS_ITER_PROP_LISTSNAPS;
34dc7c2f 1791 while (*optarg != '\0') {
b128c09f
BB		 1792 static char *type_subopts[] = { "filesystem",
1793 "volume", "snapshot", "all", NULL };
1794
34dc7c2f
BB		 1795 switch (getsubopt(&optarg, type_subopts,
1796 &value)) {
1797 case 0:
1798 types |= ZFS_TYPE_FILESYSTEM;
1799 break;
1800 case 1:
1801 types |= ZFS_TYPE_VOLUME;
1802 break;
1803 case 2:
1804 types |= ZFS_TYPE_SNAPSHOT;
1805 break;
b128c09f
BB		 1806 case 3:
1807 types = ZFS_TYPE_DATASET;
1808 break;
1809
34dc7c2f
BB		 1810 default:
1811 (void) fprintf(stderr,
1812 gettext("invalid type '%s'\n"),
1813 value);
1814 usage(B_FALSE);
1815 }
1816 }
1817 break;
1818 case ':':
1819 (void) fprintf(stderr, gettext("missing argument for "
1820 "'%c' option\n"), optopt);
1821 usage(B_FALSE);
1822 break;
1823 case '?':
1824 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1825 optopt);
1826 usage(B_FALSE);
1827 }
1828 }
1829
1830 argc -= optind;
1831 argv += optind;
1832
1833 if (fields == NULL)
b128c09f
BB		 1834 fields = default_fields;
1835
1836 /*
1837 * If "-o space" and no types were specified, don't display snapshots.
1838 */
1839 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
1840 types &= ~ZFS_TYPE_SNAPSHOT;
34dc7c2f
BB		 1841
1842 /*
1843 * If the user specifies '-o all', the zprop_get_list() doesn't
1844 * normally include the name of the dataset. For 'zfs list', we always
1845 * want this property to be first.
1846 */
1847 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1848 != 0)
1849 usage(B_FALSE);
1850
1851 cb.cb_scripted = scripted;
1852 cb.cb_first = B_TRUE;
1853
b128c09f
BB		 1854 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
1855 list_callback, &cb);
34dc7c2f
BB		 1856
1857 zprop_free_list(cb.cb_proplist);
1858 zfs_free_sort_columns(sortcol);
1859
1860 if (ret == 0 && cb.cb_first && !cb.cb_scripted)
1861 (void) printf(gettext("no datasets available\n"));
1862
1863 return (ret);
1864}
1865
1866/*
1867 * zfs rename <fs | snap | vol> <fs | snap | vol>
1868 * zfs rename -p <fs | vol> <fs | vol>
1869 * zfs rename -r <snap> <snap>
1870 *
1871 * Renames the given dataset to another of the same type.
1872 *
1873 * The '-p' flag creates all the non-existing ancestors of the target first.
1874 */
1875/* ARGSUSED */
1876static int
1877zfs_do_rename(int argc, char **argv)
1878{
1879 zfs_handle_t *zhp;
1880 int c;
1881 int ret;
1882 boolean_t recurse = B_FALSE;
1883 boolean_t parents = B_FALSE;
1884
1885 /* check options */
1886 while ((c = getopt(argc, argv, "pr")) != -1) {
1887 switch (c) {
1888 case 'p':
1889 parents = B_TRUE;
1890 break;
1891 case 'r':
1892 recurse = B_TRUE;
1893 break;
1894 case '?':
1895 default:
1896 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1897 optopt);
1898 usage(B_FALSE);
1899 }
1900 }
1901
1902 argc -= optind;
1903 argv += optind;
1904
1905 /* check number of arguments */
1906 if (argc < 1) {
1907 (void) fprintf(stderr, gettext("missing source dataset "
1908 "argument\n"));
1909 usage(B_FALSE);
1910 }
1911 if (argc < 2) {
1912 (void) fprintf(stderr, gettext("missing target dataset "
1913 "argument\n"));
1914 usage(B_FALSE);
1915 }
1916 if (argc > 2) {
1917 (void) fprintf(stderr, gettext("too many arguments\n"));
1918 usage(B_FALSE);
1919 }
1920
1921 if (recurse && parents) {
1922 (void) fprintf(stderr, gettext("-p and -r options are mutually "
1923 "exclusive\n"));
1924 usage(B_FALSE);
1925 }
1926
1927 if (recurse && strchr(argv[0], '@') == 0) {
1928 (void) fprintf(stderr, gettext("source dataset for recursive "
1929 "rename must be a snapshot\n"));
1930 usage(B_FALSE);
1931 }
1932
1933 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM |
1934 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL)
1935 return (1);
1936
1937 /* If we were asked and the name looks good, try to create ancestors. */
1938 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
1939 zfs_create_ancestors(g_zfs, argv[1]) != 0) {
1940 zfs_close(zhp);
1941 return (1);
1942 }
1943
1944 ret = (zfs_rename(zhp, argv[1], recurse) != 0);
1945
1946 zfs_close(zhp);
1947 return (ret);
1948}
1949
1950/*
1951 * zfs promote <fs>
1952 *
1953 * Promotes the given clone fs to be the parent
1954 */
1955/* ARGSUSED */
1956static int
1957zfs_do_promote(int argc, char **argv)
1958{
1959 zfs_handle_t *zhp;
1960 int ret;
1961
1962 /* check options */
1963 if (argc > 1 && argv[1][0] == '-') {
1964 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1965 argv[1][1]);
1966 usage(B_FALSE);
1967 }
1968
1969 /* check number of arguments */
1970 if (argc < 2) {
1971 (void) fprintf(stderr, gettext("missing clone filesystem"
1972 " argument\n"));
1973 usage(B_FALSE);
1974 }
1975 if (argc > 2) {
1976 (void) fprintf(stderr, gettext("too many arguments\n"));
1977 usage(B_FALSE);
1978 }
1979
1980 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1981 if (zhp == NULL)
1982 return (1);
1983
1984 ret = (zfs_promote(zhp) != 0);
1985
1986
1987 zfs_close(zhp);
1988 return (ret);
1989}
1990
1991/*
1992 * zfs rollback [-rRf] <snapshot>
1993 *
1994 * -r Delete any intervening snapshots before doing rollback
1995 * -R Delete any snapshots and their clones
1996 * -f ignored for backwards compatability
1997 *
1998 * Given a filesystem, rollback to a specific snapshot, discarding any changes
1999 * since then and making it the active dataset. If more recent snapshots exist,
2000 * the command will complain unless the '-r' flag is given.
2001 */
2002typedef struct rollback_cbdata {
2003 uint64_t cb_create;
2004 boolean_t cb_first;
2005 int cb_doclones;
2006 char *cb_target;
2007 int cb_error;
2008 boolean_t cb_recurse;
2009 boolean_t cb_dependent;
2010} rollback_cbdata_t;
2011
2012/*
2013 * Report any snapshots more recent than the one specified. Used when '-r' is
2014 * not specified. We reuse this same callback for the snapshot dependents - if
2015 * 'cb_dependent' is set, then this is a dependent and we should report it
2016 * without checking the transaction group.
2017 */
2018static int
2019rollback_check(zfs_handle_t *zhp, void *data)
2020{
2021 rollback_cbdata_t *cbp = data;
2022
2023 if (cbp->cb_doclones) {
2024 zfs_close(zhp);
2025 return (0);
2026 }
2027
2028 if (!cbp->cb_dependent) {
2029 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 &&
2030 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT &&
2031 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) >
2032 cbp->cb_create) {
2033
2034 if (cbp->cb_first && !cbp->cb_recurse) {
2035 (void) fprintf(stderr, gettext("cannot "
2036 "rollback to '%s': more recent snapshots "
2037 "exist\n"),
2038 cbp->cb_target);
2039 (void) fprintf(stderr, gettext("use '-r' to "
2040 "force deletion of the following "
2041 "snapshots:\n"));
2042 cbp->cb_first = 0;
2043 cbp->cb_error = 1;
2044 }
2045
2046 if (cbp->cb_recurse) {
2047 cbp->cb_dependent = B_TRUE;
2048 if (zfs_iter_dependents(zhp, B_TRUE,
2049 rollback_check, cbp) != 0) {
2050 zfs_close(zhp);
2051 return (-1);
2052 }
2053 cbp->cb_dependent = B_FALSE;
2054 } else {
2055 (void) fprintf(stderr, "%s\n",
2056 zfs_get_name(zhp));
2057 }
2058 }
2059 } else {
2060 if (cbp->cb_first && cbp->cb_recurse) {
2061 (void) fprintf(stderr, gettext("cannot rollback to "
2062 "'%s': clones of previous snapshots exist\n"),
2063 cbp->cb_target);
2064 (void) fprintf(stderr, gettext("use '-R' to "
2065 "force deletion of the following clones and "
2066 "dependents:\n"));
2067 cbp->cb_first = 0;
2068 cbp->cb_error = 1;
2069 }
2070
2071 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
2072 }
2073
2074 zfs_close(zhp);
2075 return (0);
2076}
2077
2078static int
2079zfs_do_rollback(int argc, char **argv)
2080{
2081 int ret;
2082 int c;
2083 boolean_t force = B_FALSE;
2084 rollback_cbdata_t cb = { 0 };
2085 zfs_handle_t *zhp, *snap;
2086 char parentname[ZFS_MAXNAMELEN];
2087 char *delim;
2088
2089 /* check options */
2090 while ((c = getopt(argc, argv, "rRf")) != -1) {
2091 switch (c) {
2092 case 'r':
2093 cb.cb_recurse = 1;
2094 break;
2095 case 'R':
2096 cb.cb_recurse = 1;
2097 cb.cb_doclones = 1;
2098 break;
2099 case 'f':
2100 force = B_TRUE;
2101 break;
2102 case '?':
2103 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2104 optopt);
2105 usage(B_FALSE);
2106 }
2107 }
2108
2109 argc -= optind;
2110 argv += optind;
2111
2112 /* check number of arguments */
2113 if (argc < 1) {
2114 (void) fprintf(stderr, gettext("missing dataset argument\n"));
2115 usage(B_FALSE);
2116 }
2117 if (argc > 1) {
2118 (void) fprintf(stderr, gettext("too many arguments\n"));
2119 usage(B_FALSE);
2120 }
2121
2122 /* open the snapshot */
2123 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
2124 return (1);
2125
2126 /* open the parent dataset */
2127 (void) strlcpy(parentname, argv[0], sizeof (parentname));
2128 verify((delim = strrchr(parentname, '@')) != NULL);
2129 *delim = '\0';
2130 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
2131 zfs_close(snap);
2132 return (1);
2133 }
2134
2135 /*
2136 * Check for more recent snapshots and/or clones based on the presence
2137 * of '-r' and '-R'.
2138 */
2139 cb.cb_target = argv[0];
2140 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
2141 cb.cb_first = B_TRUE;
2142 cb.cb_error = 0;
2143 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0)
2144 goto out;
2145
2146 if ((ret = cb.cb_error) != 0)
2147 goto out;
2148
2149 /*
2150 * Rollback parent to the given snapshot.
2151 */
2152 ret = zfs_rollback(zhp, snap, force);
2153
2154out:
2155 zfs_close(snap);
2156 zfs_close(zhp);
2157
2158 if (ret == 0)
2159 return (0);
2160 else
2161 return (1);
2162}
2163
2164/*
2165 * zfs set property=value { fs | snap | vol } ...
2166 *
2167 * Sets the given property for all datasets specified on the command line.
2168 */
2169typedef struct set_cbdata {
2170 char *cb_propname;
2171 char *cb_value;
2172} set_cbdata_t;
2173
2174static int
2175set_callback(zfs_handle_t *zhp, void *data)
2176{
2177 set_cbdata_t *cbp = data;
2178
2179 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) {
2180 switch (libzfs_errno(g_zfs)) {
2181 case EZFS_MOUNTFAILED:
2182 (void) fprintf(stderr, gettext("property may be set "
2183 "but unable to remount filesystem\n"));
2184 break;
2185 case EZFS_SHARENFSFAILED:
2186 (void) fprintf(stderr, gettext("property may be set "
2187 "but unable to reshare filesystem\n"));
2188 break;
2189 }
2190 return (1);
2191 }
2192 return (0);
2193}
2194
2195static int
2196zfs_do_set(int argc, char **argv)
2197{
2198 set_cbdata_t cb;
2199 int ret;
2200
2201 /* check for options */
2202 if (argc > 1 && argv[1][0] == '-') {
2203 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2204 argv[1][1]);
2205 usage(B_FALSE);
2206 }
2207
2208 /* check number of arguments */
2209 if (argc < 2) {
2210 (void) fprintf(stderr, gettext("missing property=value "
2211 "argument\n"));
2212 usage(B_FALSE);
2213 }
2214 if (argc < 3) {
2215 (void) fprintf(stderr, gettext("missing dataset name\n"));
2216 usage(B_FALSE);
2217 }
2218
2219 /* validate property=value argument */
2220 cb.cb_propname = argv[1];
b128c09f
BB		 2221 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) ||
2222 (cb.cb_value[1] == '\0')) {
34dc7c2f
BB		 2223 (void) fprintf(stderr, gettext("missing value in "
2224 "property=value argument\n"));
2225 usage(B_FALSE);
2226 }
2227
2228 *cb.cb_value = '\0';
2229 cb.cb_value++;
2230
2231 if (*cb.cb_propname == '\0') {
2232 (void) fprintf(stderr,
2233 gettext("missing property in property=value argument\n"));
2234 usage(B_FALSE);
2235 }
2236
b128c09f
BB		 2237 ret = zfs_for_each(argc - 2, argv + 2, NULL,
2238 ZFS_TYPE_DATASET, NULL, NULL, set_callback, &cb);
34dc7c2f
BB		 2239
2240 return (ret);
2241}
2242
2243/*
b128c09f 2244 * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
34dc7c2f
BB		 2245 *
2246 * Creates a snapshot with the given name. While functionally equivalent to
2247 * 'zfs create', it is a separate command to differentiate intent.
2248 */
2249static int
2250zfs_do_snapshot(int argc, char **argv)
2251{
2252 boolean_t recursive = B_FALSE;
2253 int ret;
2254 char c;
b128c09f
BB		 2255 nvlist_t *props;
2256
2257 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
2258 (void) fprintf(stderr, gettext("internal error: "
2259 "out of memory\n"));
2260 return (1);
2261 }
34dc7c2f
BB		 2262
2263 /* check options */
b128c09f 2264 while ((c = getopt(argc, argv, "ro:")) != -1) {
34dc7c2f 2265 switch (c) {
b128c09f
BB		 2266 case 'o':
2267 if (parseprop(props))
2268 return (1);
2269 break;
34dc7c2f
BB		 2270 case 'r':
2271 recursive = B_TRUE;
2272 break;
2273 case '?':
2274 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2275 optopt);
b128c09f 2276 goto usage;
34dc7c2f
BB		 2277 }
2278 }
2279
2280 argc -= optind;
2281 argv += optind;
2282
2283 /* check number of arguments */
2284 if (argc < 1) {
2285 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
b128c09f 2286 goto usage;
34dc7c2f
BB		 2287 }
2288 if (argc > 1) {
2289 (void) fprintf(stderr, gettext("too many arguments\n"));
b128c09f 2290 goto usage;
34dc7c2f
BB		 2291 }
2292
b128c09f
BB		 2293 ret = zfs_snapshot(g_zfs, argv[0], recursive, props);
2294 nvlist_free(props);
34dc7c2f
BB		 2295 if (ret && recursive)
2296 (void) fprintf(stderr, gettext("no snapshots were created\n"));
2297 return (ret != 0);
b128c09f
BB		 2298
2299usage:
2300 nvlist_free(props);
2301 usage(B_FALSE);
2302 return (-1);
34dc7c2f
BB		 2303}
2304
2305/*
2306 * zfs send [-v] -R [-i|-I <@snap>] <fs@snap>
2307 * zfs send [-v] [-i|-I <@snap>] <fs@snap>
2308 *
2309 * Send a backup stream to stdout.
2310 */
2311static int
2312zfs_do_send(int argc, char **argv)
2313{
2314 char *fromname = NULL;
2315 char *toname = NULL;
2316 char *cp;
2317 zfs_handle_t *zhp;
2318 boolean_t doall = B_FALSE;
2319 boolean_t replicate = B_FALSE;
2320 boolean_t fromorigin = B_FALSE;
2321 boolean_t verbose = B_FALSE;
2322 int c, err;
2323
2324 /* check options */
2325 while ((c = getopt(argc, argv, ":i:I:Rv")) != -1) {
2326 switch (c) {
2327 case 'i':
2328 if (fromname)
2329 usage(B_FALSE);
2330 fromname = optarg;
2331 break;
2332 case 'I':
2333 if (fromname)
2334 usage(B_FALSE);
2335 fromname = optarg;
2336 doall = B_TRUE;
2337 break;
2338 case 'R':
2339 replicate = B_TRUE;
2340 break;
2341 case 'v':
2342 verbose = B_TRUE;
2343 break;
2344 case ':':
2345 (void) fprintf(stderr, gettext("missing argument for "
2346 "'%c' option\n"), optopt);
2347 usage(B_FALSE);
2348 break;
2349 case '?':
2350 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2351 optopt);
2352 usage(B_FALSE);
2353 }
2354 }
2355
2356 argc -= optind;
2357 argv += optind;
2358
2359 /* check number of arguments */
2360 if (argc < 1) {
2361 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
2362 usage(B_FALSE);
2363 }
2364 if (argc > 1) {
2365 (void) fprintf(stderr, gettext("too many arguments\n"));
2366 usage(B_FALSE);
2367 }
2368
2369 if (isatty(STDOUT_FILENO)) {
2370 (void) fprintf(stderr,
2371 gettext("Error: Stream can not be written to a terminal.\n"
2372 "You must redirect standard output.\n"));
2373 return (1);
2374 }
2375
2376 cp = strchr(argv[0], '@');
2377 if (cp == NULL) {
2378 (void) fprintf(stderr,
2379 gettext("argument must be a snapshot\n"));
2380 usage(B_FALSE);
2381 }
2382 *cp = '\0';
2383 toname = cp + 1;
2384 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
2385 if (zhp == NULL)
2386 return (1);
2387
2388 /*
2389 * If they specified the full path to the snapshot, chop off
2390 * everything except the short name of the snapshot, but special
2391 * case if they specify the origin.
2392 */
2393 if (fromname && (cp = strchr(fromname, '@')) != NULL) {
2394 char origin[ZFS_MAXNAMELEN];
2395 zprop_source_t src;
2396
2397 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
2398 origin, sizeof (origin), &src, NULL, 0, B_FALSE);
2399
2400 if (strcmp(origin, fromname) == 0) {
2401 fromname = NULL;
2402 fromorigin = B_TRUE;
2403 } else {
2404 *cp = '\0';
2405 if (cp != fromname && strcmp(argv[0], fromname)) {
2406 (void) fprintf(stderr,
2407 gettext("incremental source must be "
2408 "in same filesystem\n"));
2409 usage(B_FALSE);
2410 }
2411 fromname = cp + 1;
2412 if (strchr(fromname, '@') || strchr(fromname, '/')) {
2413 (void) fprintf(stderr,
2414 gettext("invalid incremental source\n"));
2415 usage(B_FALSE);
2416 }
2417 }
2418 }
2419
2420 if (replicate && fromname == NULL)
2421 doall = B_TRUE;
2422
2423 err = zfs_send(zhp, fromname, toname, replicate, doall, fromorigin,
2424 verbose, STDOUT_FILENO);
2425 zfs_close(zhp);
2426
2427 return (err != 0);
2428}
2429
2430/*
2431 * zfs receive [-dnvF] <fs@snap>
2432 *
2433 * Restore a backup stream from stdin.
2434 */
2435static int
2436zfs_do_receive(int argc, char **argv)
2437{
2438 int c, err;
2439 recvflags_t flags;
2440
2441 bzero(&flags, sizeof (recvflags_t));
2442 /* check options */
d164b209 2443 while ((c = getopt(argc, argv, ":dnuvF")) != -1) {
34dc7c2f
BB		 2444 switch (c) {
2445 case 'd':
2446 flags.isprefix = B_TRUE;
2447 break;
2448 case 'n':
2449 flags.dryrun = B_TRUE;
2450 break;
d164b209
BB		 2451 case 'u':
2452 flags.nomount = B_TRUE;
2453 break;
34dc7c2f
BB		 2454 case 'v':
2455 flags.verbose = B_TRUE;
2456 break;
2457 case 'F':
2458 flags.force = B_TRUE;
2459 break;
2460 case ':':
2461 (void) fprintf(stderr, gettext("missing argument for "
2462 "'%c' option\n"), optopt);
2463 usage(B_FALSE);
2464 break;
2465 case '?':
2466 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2467 optopt);
2468 usage(B_FALSE);
2469 }
2470 }
2471
2472 argc -= optind;
2473 argv += optind;
2474
2475 /* check number of arguments */
2476 if (argc < 1) {
2477 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
2478 usage(B_FALSE);
2479 }
2480 if (argc > 1) {
2481 (void) fprintf(stderr, gettext("too many arguments\n"));
2482 usage(B_FALSE);
2483 }
2484
2485 if (isatty(STDIN_FILENO)) {
2486 (void) fprintf(stderr,
2487 gettext("Error: Backup stream can not be read "
2488 "from a terminal.\n"
2489 "You must redirect standard input.\n"));
2490 return (1);
2491 }
2492
2493 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL);
2494
2495 return (err != 0);
2496}
2497
2498typedef struct allow_cb {
2499 int a_permcnt;
2500 size_t a_treeoffset;
2501} allow_cb_t;
2502
2503static void
2504zfs_print_perms(avl_tree_t *tree)
2505{
2506 zfs_perm_node_t *permnode;
2507
2508 permnode = avl_first(tree);
2509 while (permnode != NULL) {
2510 (void) printf("%s", permnode->z_pname);
2511 permnode = AVL_NEXT(tree, permnode);
2512 if (permnode)
2513 (void) printf(",");
2514 else
2515 (void) printf("\n");
2516 }
2517}
2518
2519/*
2520 * Iterate over user/groups/everyone/... and the call perm_iter
2521 * function to print actual permission when tree has >0 nodes.
2522 */
2523static void
2524zfs_iter_perms(avl_tree_t *tree, const char *banner, allow_cb_t *cb)
2525{
2526 zfs_allow_node_t *item;
2527 avl_tree_t *ptree;
2528
2529 item = avl_first(tree);
2530 while (item) {
2531 ptree = (void *)((char *)item + cb->a_treeoffset);
2532 if (avl_numnodes(ptree)) {
2533 if (cb->a_permcnt++ == 0)
2534 (void) printf("%s\n", banner);
2535 (void) printf("\t%s", item->z_key);
2536 /*
2537 * Avoid an extra space being printed
2538 * for "everyone" which is keyed with a null
2539 * string
2540 */
2541 if (item->z_key[0] != '\0')
2542 (void) printf(" ");
2543 zfs_print_perms(ptree);
2544 }
2545 item = AVL_NEXT(tree, item);
2546 }
2547}
2548
2549#define LINES "-------------------------------------------------------------\n"
2550static int
2551zfs_print_allows(char *ds)
2552{
2553 zfs_allow_t *curperms, *perms;
2554 zfs_handle_t *zhp;
2555 allow_cb_t allowcb = { 0 };
2556 char banner[MAXPATHLEN];
2557
2558 if (ds[0] == '-')
2559 usage(B_FALSE);
2560
2561 if (strrchr(ds, '@')) {
2562 (void) fprintf(stderr, gettext("Snapshots don't have 'allow'"
2563 " permissions\n"));
2564 return (1);
2565 }
2566 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL)
2567 return (1);
2568
2569 if (zfs_perm_get(zhp, &perms)) {
2570 (void) fprintf(stderr,
2571 gettext("Failed to retrieve 'allows' on %s\n"), ds);
2572 zfs_close(zhp);
2573 return (1);
2574 }
2575
2576 zfs_close(zhp);
2577
2578 if (perms != NULL)
2579 (void) printf("%s", LINES);
2580 for (curperms = perms; curperms; curperms = curperms->z_next) {
2581
2582 (void) snprintf(banner, sizeof (banner),
fb5f0bc8 2583 gettext("Permission sets on (%s)"), curperms->z_setpoint);
34dc7c2f
BB		 2584 allowcb.a_treeoffset =
2585 offsetof(zfs_allow_node_t, z_localdescend);
2586 allowcb.a_permcnt = 0;
2587 zfs_iter_perms(&curperms->z_sets, banner, &allowcb);
2588
2589 (void) snprintf(banner, sizeof (banner),
fb5f0bc8
BB		 2590 gettext("Create time permissions on (%s)"),
2591 curperms->z_setpoint);
34dc7c2f
BB		 2592 allowcb.a_treeoffset =
2593 offsetof(zfs_allow_node_t, z_localdescend);
2594 allowcb.a_permcnt = 0;
2595 zfs_iter_perms(&curperms->z_crperms, banner, &allowcb);
2596
2597
2598 (void) snprintf(banner, sizeof (banner),
fb5f0bc8 2599 gettext("Local permissions on (%s)"), curperms->z_setpoint);
34dc7c2f
BB		 2600 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_local);
2601 allowcb.a_permcnt = 0;
2602 zfs_iter_perms(&curperms->z_user, banner, &allowcb);
2603 zfs_iter_perms(&curperms->z_group, banner, &allowcb);
2604 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb);
2605
2606 (void) snprintf(banner, sizeof (banner),
fb5f0bc8
BB		 2607 gettext("Descendent permissions on (%s)"),
2608 curperms->z_setpoint);
34dc7c2f
BB		 2609 allowcb.a_treeoffset = offsetof(zfs_allow_node_t, z_descend);
2610 allowcb.a_permcnt = 0;
2611 zfs_iter_perms(&curperms->z_user, banner, &allowcb);
2612 zfs_iter_perms(&curperms->z_group, banner, &allowcb);
2613 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb);
2614
2615 (void) snprintf(banner, sizeof (banner),
fb5f0bc8 2616 gettext("Local+Descendent permissions on (%s)"),
34dc7c2f
BB		 2617 curperms->z_setpoint);
2618 allowcb.a_treeoffset =
2619 offsetof(zfs_allow_node_t, z_localdescend);
2620 allowcb.a_permcnt = 0;
2621 zfs_iter_perms(&curperms->z_user, banner, &allowcb);
2622 zfs_iter_perms(&curperms->z_group, banner, &allowcb);
2623 zfs_iter_perms(&curperms->z_everyone, banner, &allowcb);
2624
2625 (void) printf("%s", LINES);
2626 }
2627 zfs_free_allows(perms);
2628 return (0);
2629}
2630
2631#define ALLOWOPTIONS "ldcsu:g:e"
2632#define UNALLOWOPTIONS "ldcsu:g:er"
2633
2634/*
2635 * Validate options, and build necessary datastructure to display/remove/add
2636 * permissions.
2637 * Returns 0 - If permissions should be added/removed
2638 * Returns 1 - If permissions should be displayed.
2639 * Returns -1 - on failure
2640 */
2641int
2642parse_allow_args(int *argc, char **argv[], boolean_t unallow,
2643 char **ds, int *recurse, nvlist_t **zperms)
2644{
2645 int c;
2646 char *options = unallow ? UNALLOWOPTIONS : ALLOWOPTIONS;
2647 zfs_deleg_inherit_t deleg_type = ZFS_DELEG_NONE;
2648 zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN;
2649 char *who = NULL;
2650 char *perms = NULL;
2651 zfs_handle_t *zhp;
2652
2653 while ((c = getopt(*argc, *argv, options)) != -1) {
2654 switch (c) {
2655 case 'l':
2656 if (who_type == ZFS_DELEG_CREATE ||
2657 who_type == ZFS_DELEG_NAMED_SET)
2658 usage(B_FALSE);
2659
2660 deleg_type |= ZFS_DELEG_PERM_LOCAL;
2661 break;
2662 case 'd':
2663 if (who_type == ZFS_DELEG_CREATE ||
2664 who_type == ZFS_DELEG_NAMED_SET)
2665 usage(B_FALSE);
2666
2667 deleg_type |= ZFS_DELEG_PERM_DESCENDENT;
2668 break;
2669 case 'r':
2670 *recurse = B_TRUE;
2671 break;
2672 case 'c':
2673 if (who_type != ZFS_DELEG_WHO_UNKNOWN)
2674 usage(B_FALSE);
2675 if (deleg_type)
2676 usage(B_FALSE);
2677 who_type = ZFS_DELEG_CREATE;
2678 break;
2679 case 's':
2680 if (who_type != ZFS_DELEG_WHO_UNKNOWN)
2681 usage(B_FALSE);
2682 if (deleg_type)
2683 usage(B_FALSE);
2684 who_type = ZFS_DELEG_NAMED_SET;
2685 break;
2686 case 'u':
2687 if (who_type != ZFS_DELEG_WHO_UNKNOWN)
2688 usage(B_FALSE);
2689 who_type = ZFS_DELEG_USER;
2690 who = optarg;
2691 break;
2692 case 'g':
2693 if (who_type != ZFS_DELEG_WHO_UNKNOWN)
2694 usage(B_FALSE);
2695 who_type = ZFS_DELEG_GROUP;
2696 who = optarg;
2697 break;
2698 case 'e':
2699 if (who_type != ZFS_DELEG_WHO_UNKNOWN)
2700 usage(B_FALSE);
2701 who_type = ZFS_DELEG_EVERYONE;
2702 break;
2703 default:
2704 usage(B_FALSE);
2705 break;
2706 }
2707 }
2708
2709 if (deleg_type == 0)
2710 deleg_type = ZFS_DELEG_PERM_LOCALDESCENDENT;
2711
2712 *argc -= optind;
2713 *argv += optind;
2714
2715 if (unallow == B_FALSE && *argc == 1) {
2716 /*
2717 * Only print permissions if no options were processed
2718 */
2719 if (optind == 1)
2720 return (1);
2721 else
2722 usage(B_FALSE);
2723 }
2724
2725 /*
2726 * initialize variables for zfs_build_perms based on number
2727 * of arguments.
2728 * 3 arguments ==> zfs [un]allow joe perm,perm,perm <dataset> or
2729 * zfs [un]allow -s @set1 perm,perm <dataset>
2730 * 2 arguments ==> zfs [un]allow -c perm,perm <dataset> or
2731 * zfs [un]allow -u|-g <name> perm <dataset> or
2732 * zfs [un]allow -e perm,perm <dataset>
2733 * zfs unallow joe <dataset>
2734 * zfs unallow -s @set1 <dataset>
2735 * 1 argument ==> zfs [un]allow -e <dataset> or
2736 * zfs [un]allow -c <dataset>
2737 */
2738
2739 switch (*argc) {
2740 case 3:
2741 perms = (*argv)[1];
2742 who = (*argv)[0];
2743 *ds = (*argv)[2];
2744
2745 /*
2746 * advance argc/argv for do_allow cases.
2747 * for do_allow case make sure who have a know who type
2748 * and its not a permission set.
2749 */
2750 if (unallow == B_TRUE) {
2751 *argc -= 2;
2752 *argv += 2;
2753 } else if (who_type != ZFS_DELEG_WHO_UNKNOWN &&
2754 who_type != ZFS_DELEG_NAMED_SET)
2755 usage(B_FALSE);
2756 break;
2757
2758 case 2:
2759 if (unallow == B_TRUE && (who_type == ZFS_DELEG_EVERYONE ||
2760 who_type == ZFS_DELEG_CREATE || who != NULL)) {
2761 perms = (*argv)[0];
2762 *ds = (*argv)[1];
2763 } else {
2764 if (unallow == B_FALSE &&
2765 (who_type == ZFS_DELEG_WHO_UNKNOWN ||
2766 who_type == ZFS_DELEG_NAMED_SET))
2767 usage(B_FALSE);
2768 else if (who_type == ZFS_DELEG_WHO_UNKNOWN ||
2769 who_type == ZFS_DELEG_NAMED_SET)
2770 who = (*argv)[0];
2771 else if (who_type != ZFS_DELEG_NAMED_SET)
2772 perms = (*argv)[0];
2773 *ds = (*argv)[1];
2774 }
2775 if (unallow == B_TRUE) {
2776 (*argc)--;
2777 (*argv)++;
2778 }
2779 break;
2780
2781 case 1:
2782 if (unallow == B_FALSE)
2783 usage(B_FALSE);
2784 if (who == NULL && who_type != ZFS_DELEG_CREATE &&
2785 who_type != ZFS_DELEG_EVERYONE)
2786 usage(B_FALSE);
2787 *ds = (*argv)[0];
2788 break;
2789
2790 default:
2791 usage(B_FALSE);
2792 }
2793
2794 if (strrchr(*ds, '@')) {
2795 (void) fprintf(stderr,
2796 gettext("Can't set or remove 'allow' permissions "
2797 "on snapshots.\n"));
2798 return (-1);
2799 }
2800
2801 if ((zhp = zfs_open(g_zfs, *ds, ZFS_TYPE_DATASET)) == NULL)
2802 return (-1);
2803
2804 if ((zfs_build_perms(zhp, who, perms,
2805 who_type, deleg_type, zperms)) != 0) {
2806 zfs_close(zhp);
2807 return (-1);
2808 }
2809 zfs_close(zhp);
2810 return (0);
2811}
2812
2813static int
2814zfs_do_allow(int argc, char **argv)
2815{
2816 char *ds;
2817 nvlist_t *zperms = NULL;
2818 zfs_handle_t *zhp;
2819 int unused;
2820 int ret;
2821
2822 if ((ret = parse_allow_args(&argc, &argv, B_FALSE, &ds,
2823 &unused, &zperms)) == -1)
2824 return (1);
2825
2826 if (ret == 1)
2827 return (zfs_print_allows(argv[0]));
2828
2829 if ((zhp = zfs_open(g_zfs, ds, ZFS_TYPE_DATASET)) == NULL)
2830 return (1);
2831
2832 if (zfs_perm_set(zhp, zperms)) {
2833 zfs_close(zhp);
2834 nvlist_free(zperms);
2835 return (1);
2836 }
2837 nvlist_free(zperms);
2838 zfs_close(zhp);
2839
2840 return (0);
2841}
2842
2843static int
2844unallow_callback(zfs_handle_t *zhp, void *data)
2845{
2846 nvlist_t *nvp = (nvlist_t *)data;
2847 int error;
2848
2849 error = zfs_perm_remove(zhp, nvp);
2850 if (error) {
2851 (void) fprintf(stderr, gettext("Failed to remove permissions "
2852 "on %s\n"), zfs_get_name(zhp));
2853 }
2854 return (error);
2855}
2856
2857static int
2858zfs_do_unallow(int argc, char **argv)
2859{
2860 int recurse = B_FALSE;
2861 char *ds;
2862 int error;
2863 nvlist_t *zperms = NULL;
b128c09f 2864 int flags = 0;
34dc7c2f
BB		 2865
2866 if (parse_allow_args(&argc, &argv, B_TRUE,
2867 &ds, &recurse, &zperms) == -1)
2868 return (1);
2869
b128c09f
BB		 2870 if (recurse)
2871 flags |= ZFS_ITER_RECURSE;
2872 error = zfs_for_each(argc, argv, flags,
34dc7c2f 2873 ZFS_TYPE_FILESYSTEM|ZFS_TYPE_VOLUME, NULL,
b128c09f 2874 NULL, unallow_callback, (void *)zperms);
34dc7c2f
BB		 2875
2876 if (zperms)
2877 nvlist_free(zperms);
2878
2879 return (error);
2880}
2881
2882typedef struct get_all_cbdata {
2883 zfs_handle_t **cb_handles;
2884 size_t cb_alloc;
2885 size_t cb_used;
2886 uint_t cb_types;
2887 boolean_t cb_verbose;
2888} get_all_cbdata_t;
2889
2890#define CHECK_SPINNER 30
2891#define SPINNER_TIME 3 /* seconds */
2892#define MOUNT_TIME 5 /* seconds */
2893
2894static int
2895get_one_dataset(zfs_handle_t *zhp, void *data)
2896{
2897 static char spin[] = { '-', '\\', '|', '/' };
2898 static int spinval = 0;
2899 static int spincheck = 0;
2900 static time_t last_spin_time = (time_t)0;
2901 get_all_cbdata_t *cbp = data;
2902 zfs_type_t type = zfs_get_type(zhp);
2903
2904 if (cbp->cb_verbose) {
2905 if (--spincheck < 0) {
2906 time_t now = time(NULL);
2907 if (last_spin_time + SPINNER_TIME < now) {
2908 (void) printf("\b%c", spin[spinval++ % 4]);
2909 (void) fflush(stdout);
2910 last_spin_time = now;
2911 }
2912 spincheck = CHECK_SPINNER;
2913 }
2914 }
2915
2916 /*
2917 * Interate over any nested datasets.
2918 */
2919 if (type == ZFS_TYPE_FILESYSTEM &&
2920 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
2921 zfs_close(zhp);
2922 return (1);
2923 }
2924
2925 /*
2926 * Skip any datasets whose type does not match.
2927 */
2928 if ((type & cbp->cb_types) == 0) {
2929 zfs_close(zhp);
2930 return (0);
2931 }
2932
2933 if (cbp->cb_alloc == cbp->cb_used) {
2934 zfs_handle_t **handles;
2935
2936 if (cbp->cb_alloc == 0)
2937 cbp->cb_alloc = 64;
2938 else
2939 cbp->cb_alloc *= 2;
2940
2941 handles = safe_malloc(cbp->cb_alloc * sizeof (void *));
2942
2943 if (cbp->cb_handles) {
2944 bcopy(cbp->cb_handles, handles,
2945 cbp->cb_used * sizeof (void *));
2946 free(cbp->cb_handles);
2947 }
2948
2949 cbp->cb_handles = handles;
2950 }
2951
2952 cbp->cb_handles[cbp->cb_used++] = zhp;
2953
2954 return (0);
2955}
2956
2957static void
2958get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count,
2959 boolean_t verbose)
2960{
2961 get_all_cbdata_t cb = { 0 };
2962 cb.cb_types = types;
2963 cb.cb_verbose = verbose;
2964
2965 if (verbose) {
2966 (void) printf("%s: *", gettext("Reading ZFS config"));
2967 (void) fflush(stdout);
2968 }
2969
2970 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
2971
2972 *dslist = cb.cb_handles;
2973 *count = cb.cb_used;
2974
2975 if (verbose) {
2976 (void) printf("\b%s\n", gettext("done."));
2977 }
2978}
2979
2980static int
2981dataset_cmp(const void *a, const void *b)
2982{
2983 zfs_handle_t **za = (zfs_handle_t **)a;
2984 zfs_handle_t **zb = (zfs_handle_t **)b;
2985 char mounta[MAXPATHLEN];
2986 char mountb[MAXPATHLEN];
2987 boolean_t gota, gotb;
2988
2989 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0)
2990 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta,
2991 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0);
2992 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0)
2993 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb,
2994 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0);
2995
2996 if (gota && gotb)
2997 return (strcmp(mounta, mountb));
2998
2999 if (gota)
3000 return (-1);
3001 if (gotb)
3002 return (1);
3003
3004 return (strcmp(zfs_get_name(a), zfs_get_name(b)));
3005}
3006
3007/*
3008 * Generic callback for sharing or mounting filesystems. Because the code is so
3009 * similar, we have a common function with an extra parameter to determine which
3010 * mode we are using.
3011 */
3012#define OP_SHARE 0x1
3013#define OP_MOUNT 0x2
3014
3015/*
3016 * Share or mount a dataset.
3017 */
3018static int
3019share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
3020 boolean_t explicit, const char *options)
3021{
3022 char mountpoint[ZFS_MAXPROPLEN];
3023 char shareopts[ZFS_MAXPROPLEN];
3024 char smbshareopts[ZFS_MAXPROPLEN];
3025 const char *cmdname = op == OP_SHARE ? "share" : "mount";
3026 struct mnttab mnt;
3027 uint64_t zoned, canmount;
3028 zfs_type_t type = zfs_get_type(zhp);
3029 boolean_t shared_nfs, shared_smb;
3030
3031 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME));
3032
3033 if (type == ZFS_TYPE_FILESYSTEM) {
3034 /*
3035 * Check to make sure we can mount/share this dataset. If we
3036 * are in the global zone and the filesystem is exported to a
3037 * local zone, or if we are in a local zone and the
3038 * filesystem is not exported, then it is an error.
3039 */
3040 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
3041
3042 if (zoned && getzoneid() == GLOBAL_ZONEID) {
3043 if (!explicit)
3044 return (0);
3045
3046 (void) fprintf(stderr, gettext("cannot %s '%s': "
3047 "dataset is exported to a local zone\n"), cmdname,
3048 zfs_get_name(zhp));
3049 return (1);
3050
3051 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
3052 if (!explicit)
3053 return (0);
3054
3055 (void) fprintf(stderr, gettext("cannot %s '%s': "
3056 "permission denied\n"), cmdname,
3057 zfs_get_name(zhp));
3058 return (1);
3059 }
3060
3061 /*
3062 * Ignore any filesystems which don't apply to us. This
3063 * includes those with a legacy mountpoint, or those with
3064 * legacy share options.
3065 */
3066 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
3067 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
3068 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
3069 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
3070 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
3071 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
34dc7c2f
BB		 3072
3073 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
3074 strcmp(smbshareopts, "off") == 0) {
3075 if (!explicit)
3076 return (0);
3077
3078 (void) fprintf(stderr, gettext("cannot share '%s': "
3079 "legacy share\n"), zfs_get_name(zhp));
3080 (void) fprintf(stderr, gettext("use share(1M) to "
fb5f0bc8
BB		 3081 "share this filesystem, or set "
3082 "sharenfs property on\n"));
34dc7c2f
BB		 3083 return (1);
3084 }
3085
3086 /*
3087 * We cannot share or mount legacy filesystems. If the
3088 * shareopts is non-legacy but the mountpoint is legacy, we
3089 * treat it as a legacy share.
3090 */
3091 if (strcmp(mountpoint, "legacy") == 0) {
3092 if (!explicit)
3093 return (0);
3094
3095 (void) fprintf(stderr, gettext("cannot %s '%s': "
3096 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
3097 (void) fprintf(stderr, gettext("use %s(1M) to "
3098 "%s this filesystem\n"), cmdname, cmdname);
3099 return (1);
3100 }
3101
3102 if (strcmp(mountpoint, "none") == 0) {
3103 if (!explicit)
3104 return (0);
3105
3106 (void) fprintf(stderr, gettext("cannot %s '%s': no "
3107 "mountpoint set\n"), cmdname, zfs_get_name(zhp));
3108 return (1);
3109 }
3110
3111 /*
3112 * canmount explicit outcome
3113 * on no pass through
3114 * on yes pass through
3115 * off no return 0
3116 * off yes display error, return 1
3117 * noauto no return 0
3118 * noauto yes pass through
3119 */
fb5f0bc8 3120 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
34dc7c2f
BB		 3121 if (canmount == ZFS_CANMOUNT_OFF) {
3122 if (!explicit)
3123 return (0);
3124
3125 (void) fprintf(stderr, gettext("cannot %s '%s': "
3126 "'canmount' property is set to 'off'\n"), cmdname,
3127 zfs_get_name(zhp));
3128 return (1);
3129 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
3130 return (0);
3131 }
3132
3133 /*
3134 * At this point, we have verified that the mountpoint and/or
3135 * shareopts are appropriate for auto management. If the
3136 * filesystem is already mounted or shared, return (failing
3137 * for explicit requests); otherwise mount or share the
3138 * filesystem.
3139 */
3140 switch (op) {
3141 case OP_SHARE:
3142
3143 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
3144 shared_smb = zfs_is_shared_smb(zhp, NULL);
3145
3146 if (shared_nfs && shared_smb ||
3147 (shared_nfs && strcmp(shareopts, "on") == 0 &&
3148 strcmp(smbshareopts, "off") == 0) ||
3149 (shared_smb && strcmp(smbshareopts, "on") == 0 &&
3150 strcmp(shareopts, "off") == 0)) {
3151 if (!explicit)
3152 return (0);
3153
3154 (void) fprintf(stderr, gettext("cannot share "
3155 "'%s': filesystem already shared\n"),
3156 zfs_get_name(zhp));
3157 return (1);
3158 }
3159
3160 if (!zfs_is_mounted(zhp, NULL) &&
3161 zfs_mount(zhp, NULL, 0) != 0)
3162 return (1);
3163
3164 if (protocol == NULL) {
3165 if (zfs_shareall(zhp) != 0)
3166 return (1);
3167 } else if (strcmp(protocol, "nfs") == 0) {
3168 if (zfs_share_nfs(zhp))
3169 return (1);
3170 } else if (strcmp(protocol, "smb") == 0) {
3171 if (zfs_share_smb(zhp))
3172 return (1);
3173 } else {
3174 (void) fprintf(stderr, gettext("cannot share "
3175 "'%s': invalid share type '%s' "
3176 "specified\n"),
3177 zfs_get_name(zhp), protocol);
3178 return (1);
3179 }
3180
3181 break;
3182
3183 case OP_MOUNT:
3184 if (options == NULL)
3185 mnt.mnt_mntopts = "";
3186 else
3187 mnt.mnt_mntopts = (char *)options;
3188
3189 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
3190 zfs_is_mounted(zhp, NULL)) {
3191 if (!explicit)
3192 return (0);
3193
3194 (void) fprintf(stderr, gettext("cannot mount "
3195 "'%s': filesystem already mounted\n"),
3196 zfs_get_name(zhp));
3197 return (1);
3198 }
3199
3200 if (zfs_mount(zhp, options, flags) != 0)
3201 return (1);
3202 break;
3203 }
3204 } else {
3205 assert(op == OP_SHARE);
3206
3207 /*
3208 * Ignore any volumes that aren't shared.
3209 */
3210 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts,
3211 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
3212
3213 if (strcmp(shareopts, "off") == 0) {
3214 if (!explicit)
3215 return (0);
3216
3217 (void) fprintf(stderr, gettext("cannot share '%s': "
3218 "'shareiscsi' property not set\n"),
3219 zfs_get_name(zhp));
3220 (void) fprintf(stderr, gettext("set 'shareiscsi' "
3221 "property or use iscsitadm(1M) to share this "
3222 "volume\n"));
3223 return (1);
3224 }
3225
3226 if (zfs_is_shared_iscsi(zhp)) {
3227 if (!explicit)
3228 return (0);
3229
3230 (void) fprintf(stderr, gettext("cannot share "
3231 "'%s': volume already shared\n"),
3232 zfs_get_name(zhp));
3233 return (1);
3234 }
3235
3236 if (zfs_share_iscsi(zhp) != 0)
3237 return (1);
3238 }
3239
3240 return (0);
3241}
3242
3243/*
3244 * Reports progress in the form "(current/total)". Not thread-safe.
3245 */
3246static void
3247report_mount_progress(int current, int total)
3248{
3249 static int len;
3250 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"
3251 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b";
3252 static time_t last_progress_time;
3253 time_t now = time(NULL);
3254
3255 /* report 1..n instead of 0..n-1 */
3256 ++current;
3257
3258 /* display header if we're here for the first time */
3259 if (current == 1) {
3260 (void) printf(gettext("Mounting ZFS filesystems: "));
3261 len = 0;
3262 } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
3263 /* too soon to report again */
3264 return;
3265 }
3266
3267 last_progress_time = now;
3268
3269 /* back up to prepare for overwriting */
3270 if (len)
3271 (void) printf("%*.*s", len, len, reverse);
3272
3273 /* We put a newline at the end if this is the last one. */
3274 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : "");
3275 (void) fflush(stdout);
3276}
3277
3278static void
3279append_options(char *mntopts, char *newopts)
3280{
3281 int len = strlen(mntopts);
3282
3283 /* original length plus new string to append plus 1 for the comma */
3284 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
3285 (void) fprintf(stderr, gettext("the opts argument for "
3286 "'%c' option is too long (more than %d chars)\n"),
3287 "-o", MNT_LINE_MAX);
3288 usage(B_FALSE);
3289 }
3290
3291 if (*mntopts)
3292 mntopts[len++] = ',';
3293
3294 (void) strcpy(&mntopts[len], newopts);
3295}
3296
3297static int
3298share_mount(int op, int argc, char **argv)
3299{
3300 int do_all = 0;
3301 boolean_t verbose = B_FALSE;
3302 int c, ret = 0;
3303 char *options = NULL;
3304 int types, flags = 0;
3305
3306 /* check options */
3307 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
3308 != -1) {
3309 switch (c) {
3310 case 'a':
3311 do_all = 1;
3312 break;
3313 case 'v':
3314 verbose = B_TRUE;
3315 break;
3316 case 'o':
3317 if (*optarg == '\0') {
3318 (void) fprintf(stderr, gettext("empty mount "
3319 "options (-o) specified\n"));
3320 usage(B_FALSE);
3321 }
3322
3323 if (options == NULL)
3324 options = safe_malloc(MNT_LINE_MAX + 1);
3325
3326 /* option validation is done later */
3327 append_options(options, optarg);
3328 break;
3329
3330 case 'O':
3331 flags |= MS_OVERLAY;
3332 break;
3333 case ':':
3334 (void) fprintf(stderr, gettext("missing argument for "
3335 "'%c' option\n"), optopt);
3336 usage(B_FALSE);
3337 break;
3338 case '?':
3339 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3340 optopt);
3341 usage(B_FALSE);
3342 }
3343 }
3344
3345 argc -= optind;
3346 argv += optind;
3347
3348 /* check number of arguments */
3349 if (do_all) {
3350 zfs_handle_t **dslist = NULL;
3351 size_t i, count = 0;
3352 char *protocol = NULL;
3353
3354 if (op == OP_MOUNT) {
3355 types = ZFS_TYPE_FILESYSTEM;
3356 } else if (argc > 0) {
3357 if (strcmp(argv[0], "nfs") == 0 ||
3358 strcmp(argv[0], "smb") == 0) {
3359 types = ZFS_TYPE_FILESYSTEM;
3360 } else if (strcmp(argv[0], "iscsi") == 0) {
3361 types = ZFS_TYPE_VOLUME;
3362 } else {
3363 (void) fprintf(stderr, gettext("share type "
3364 "must be 'nfs', 'smb' or 'iscsi'\n"));
3365 usage(B_FALSE);
3366 }
3367 protocol = argv[0];
3368 argc--;
3369 argv++;
3370 } else {
3371 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
3372 }
3373
3374 if (argc != 0) {
3375 (void) fprintf(stderr, gettext("too many arguments\n"));
3376 usage(B_FALSE);
3377 }
3378
3379 get_all_datasets(types, &dslist, &count, verbose);
3380
3381 if (count == 0)
3382 return (0);
3383
3384 qsort(dslist, count, sizeof (void *), dataset_cmp);
3385
3386 for (i = 0; i < count; i++) {
3387 if (verbose)
3388 report_mount_progress(i, count);
3389
3390 if (share_mount_one(dslist[i], op, flags, protocol,
3391 B_FALSE, options) != 0)
3392 ret = 1;
3393 zfs_close(dslist[i]);
3394 }
3395
3396 free(dslist);
3397 } else if (argc == 0) {
3398 struct mnttab entry;
3399
3400 if ((op == OP_SHARE) || (options != NULL)) {
3401 (void) fprintf(stderr, gettext("missing filesystem "
3402 "argument (specify -a for all)\n"));
3403 usage(B_FALSE);
3404 }
3405
3406 /*
3407 * When mount is given no arguments, go through /etc/mnttab and
3408 * display any active ZFS mounts. We hide any snapshots, since
3409 * they are controlled automatically.
3410 */
3411 rewind(mnttab_file);
3412 while (getmntent(mnttab_file, &entry) == 0) {
3413 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
3414 strchr(entry.mnt_special, '@') != NULL)
3415 continue;
3416
3417 (void) printf("%-30s %s\n", entry.mnt_special,
3418 entry.mnt_mountp);
3419 }
3420
3421 } else {
3422 zfs_handle_t *zhp;
3423
3424 types = ZFS_TYPE_FILESYSTEM;
3425 if (op == OP_SHARE)
3426 types |= ZFS_TYPE_VOLUME;
3427
3428 if (argc > 1) {
3429 (void) fprintf(stderr,
3430 gettext("too many arguments\n"));
3431 usage(B_FALSE);
3432 }
3433
3434 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) {
3435 ret = 1;
3436 } else {
3437 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
3438 options);
3439 zfs_close(zhp);
3440 }
3441 }
3442
3443 return (ret);
3444}
3445
3446/*
3447 * zfs mount -a [nfs | iscsi]
3448 * zfs mount filesystem
3449 *
3450 * Mount all filesystems, or mount the given filesystem.
3451 */
3452static int
3453zfs_do_mount(int argc, char **argv)
3454{
3455 return (share_mount(OP_MOUNT, argc, argv));
3456}
3457
3458/*
3459 * zfs share -a [nfs | iscsi | smb]
3460 * zfs share filesystem
3461 *
3462 * Share all filesystems, or share the given filesystem.
3463 */
3464static int
3465zfs_do_share(int argc, char **argv)
3466{
3467 return (share_mount(OP_SHARE, argc, argv));
3468}
3469
3470typedef struct unshare_unmount_node {
3471 zfs_handle_t *un_zhp;
3472 char *un_mountp;
3473 uu_avl_node_t un_avlnode;
3474} unshare_unmount_node_t;
3475
3476/* ARGSUSED */
3477static int
3478unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
3479{
3480 const unshare_unmount_node_t *l = larg;
3481 const unshare_unmount_node_t *r = rarg;
3482
3483 return (strcmp(l->un_mountp, r->un_mountp));
3484}
3485
3486/*
3487 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an
3488 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
3489 * and unmount it appropriately.
3490 */
3491static int
3492unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
3493{
3494 zfs_handle_t *zhp;
3495 int ret;
3496 struct stat64 statbuf;
3497 struct extmnttab entry;
3498 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
3499 ino_t path_inode;
3500
3501 /*
3502 * Search for the path in /etc/mnttab. Rather than looking for the
3503 * specific path, which can be fooled by non-standard paths (i.e. ".."
3504 * or "//"), we stat() the path and search for the corresponding
3505 * (major,minor) device pair.
3506 */
3507 if (stat64(path, &statbuf) != 0) {
3508 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
3509 cmdname, path, strerror(errno));
3510 return (1);
3511 }
3512 path_inode = statbuf.st_ino;
3513
3514 /*
3515 * Search for the given (major,minor) pair in the mount table.
3516 */
3517 rewind(mnttab_file);
3518 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
3519 if (entry.mnt_major == major(statbuf.st_dev) &&
3520 entry.mnt_minor == minor(statbuf.st_dev))
3521 break;
3522 }
3523 if (ret != 0) {
3524 if (op == OP_SHARE) {
3525 (void) fprintf(stderr, gettext("cannot %s '%s': not "
3526 "currently mounted\n"), cmdname, path);
3527 return (1);
3528 }
3529 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
3530 path);
3531 if ((ret = umount2(path, flags)) != 0)
3532 (void) fprintf(stderr, gettext("%s: %s\n"), path,
3533 strerror(errno));
3534 return (ret != 0);
3535 }
3536
3537 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
3538 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
3539 "filesystem\n"), cmdname, path);
3540 return (1);
3541 }
3542
3543 if ((zhp = zfs_open(g_zfs, entry.mnt_special,
3544 ZFS_TYPE_FILESYSTEM)) == NULL)
3545 return (1);
3546
34dc7c2f 3547 ret = 1;
b128c09f
BB		 3548 if (stat64(entry.mnt_mountp, &statbuf) != 0) {
3549 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
3550 cmdname, path, strerror(errno));
3551 goto out;
3552 } else if (statbuf.st_ino != path_inode) {
3553 (void) fprintf(stderr, gettext("cannot "
3554 "%s '%s': not a mountpoint\n"), cmdname, path);
3555 goto out;
3556 }
3557
34dc7c2f
BB		 3558 if (op == OP_SHARE) {
3559 char nfs_mnt_prop[ZFS_MAXPROPLEN];
3560 char smbshare_prop[ZFS_MAXPROPLEN];
3561
3562 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
3563 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
3564 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
3565 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
3566
3567 if (strcmp(nfs_mnt_prop, "off") == 0 &&
3568 strcmp(smbshare_prop, "off") == 0) {
3569 (void) fprintf(stderr, gettext("cannot unshare "
3570 "'%s': legacy share\n"), path);
3571 (void) fprintf(stderr, gettext("use "
3572 "unshare(1M) to unshare this filesystem\n"));
3573 } else if (!zfs_is_shared(zhp)) {
3574 (void) fprintf(stderr, gettext("cannot unshare '%s': "
3575 "not currently shared\n"), path);
3576 } else {
3577 ret = zfs_unshareall_bypath(zhp, path);
3578 }
3579 } else {
3580 char mtpt_prop[ZFS_MAXPROPLEN];
3581
3582 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
3583 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
3584
b128c09f 3585 if (is_manual) {
34dc7c2f
BB		 3586 ret = zfs_unmount(zhp, NULL, flags);
3587 } else if (strcmp(mtpt_prop, "legacy") == 0) {
3588 (void) fprintf(stderr, gettext("cannot unmount "
3589 "'%s': legacy mountpoint\n"),
3590 zfs_get_name(zhp));
3591 (void) fprintf(stderr, gettext("use umount(1M) "
3592 "to unmount this filesystem\n"));
3593 } else {
3594 ret = zfs_unmountall(zhp, flags);
3595 }
3596 }
3597
b128c09f 3598out:
34dc7c2f
BB		 3599 zfs_close(zhp);
3600
3601 return (ret != 0);
3602}
3603
3604/*
3605 * Generic callback for unsharing or unmounting a filesystem.
3606 */
3607static int
3608unshare_unmount(int op, int argc, char **argv)
3609{
3610 int do_all = 0;
3611 int flags = 0;
3612 int ret = 0;
3613 int types, c;
3614 zfs_handle_t *zhp;
3615 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN];
3616 char sharesmb[ZFS_MAXPROPLEN];
3617
3618 /* check options */
3619 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
3620 switch (c) {
3621 case 'a':
3622 do_all = 1;
3623 break;
3624 case 'f':
3625 flags = MS_FORCE;
3626 break;
3627 case '?':
3628 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3629 optopt);
3630 usage(B_FALSE);
3631 }
3632 }
3633
3634 argc -= optind;
3635 argv += optind;
3636
3637 if (do_all) {
3638 /*
3639 * We could make use of zfs_for_each() to walk all datasets in
3640 * the system, but this would be very inefficient, especially
3641 * since we would have to linearly search /etc/mnttab for each
3642 * one. Instead, do one pass through /etc/mnttab looking for
3643 * zfs entries and call zfs_unmount() for each one.
3644 *
3645 * Things get a little tricky if the administrator has created
3646 * mountpoints beneath other ZFS filesystems. In this case, we
3647 * have to unmount the deepest filesystems first. To accomplish
3648 * this, we place all the mountpoints in an AVL tree sorted by
3649 * the special type (dataset name), and walk the result in
3650 * reverse to make sure to get any snapshots first.
3651 */
3652 struct mnttab entry;
3653 uu_avl_pool_t *pool;
3654 uu_avl_t *tree;
3655 unshare_unmount_node_t *node;
3656 uu_avl_index_t idx;
3657 uu_avl_walk_t *walk;
3658
3659 if (argc != 0) {
3660 (void) fprintf(stderr, gettext("too many arguments\n"));
3661 usage(B_FALSE);
3662 }
3663
3664 if ((pool = uu_avl_pool_create("unmount_pool",
3665 sizeof (unshare_unmount_node_t),
3666 offsetof(unshare_unmount_node_t, un_avlnode),
3667 unshare_unmount_compare,
3668 UU_DEFAULT)) == NULL) {
3669 (void) fprintf(stderr, gettext("internal error: "
3670 "out of memory\n"));
3671 exit(1);
3672 }
3673
3674 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) {
3675 (void) fprintf(stderr, gettext("internal error: "
3676 "out of memory\n"));
3677 exit(1);
3678 }
3679
3680 rewind(mnttab_file);
3681 while (getmntent(mnttab_file, &entry) == 0) {
3682
3683 /* ignore non-ZFS entries */
3684 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
3685 continue;
3686
3687 /* ignore snapshots */
3688 if (strchr(entry.mnt_special, '@') != NULL)
3689 continue;
3690
3691 if ((zhp = zfs_open(g_zfs, entry.mnt_special,
3692 ZFS_TYPE_FILESYSTEM)) == NULL) {
3693 ret = 1;
3694 continue;
3695 }
3696
3697 switch (op) {
3698 case OP_SHARE:
3699 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
3700 nfsiscsi_mnt_prop,
3701 sizeof (nfsiscsi_mnt_prop),
3702 NULL, NULL, 0, B_FALSE) == 0);
3703 if (strcmp(nfsiscsi_mnt_prop, "off") != 0)
3704 break;
3705 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
3706 nfsiscsi_mnt_prop,
3707 sizeof (nfsiscsi_mnt_prop),
3708 NULL, NULL, 0, B_FALSE) == 0);
3709 if (strcmp(nfsiscsi_mnt_prop, "off") == 0)
3710 continue;
3711 break;
3712 case OP_MOUNT:
3713 /* Ignore legacy mounts */
3714 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
3715 nfsiscsi_mnt_prop,
3716 sizeof (nfsiscsi_mnt_prop),
3717 NULL, NULL, 0, B_FALSE) == 0);
3718 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0)
3719 continue;
3720 /* Ignore canmount=noauto mounts */
3721 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
3722 ZFS_CANMOUNT_NOAUTO)
3723 continue;
3724 default:
3725 break;
3726 }
3727
3728 node = safe_malloc(sizeof (unshare_unmount_node_t));
3729 node->un_zhp = zhp;
3730
3731 if ((node->un_mountp = strdup(entry.mnt_mountp)) ==
3732 NULL) {
3733 (void) fprintf(stderr, gettext("internal error:"
3734 " out of memory\n"));
3735 exit(1);
3736 }
3737
3738 uu_avl_node_init(node, &node->un_avlnode, pool);
3739
3740 if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
3741 uu_avl_insert(tree, node, idx);
3742 } else {
3743 zfs_close(node->un_zhp);
3744 free(node->un_mountp);
3745 free(node);
3746 }
3747 }
3748
3749 /*
3750 * Walk the AVL tree in reverse, unmounting each filesystem and
3751 * removing it from the AVL tree in the process.
3752 */
3753 if ((walk = uu_avl_walk_start(tree,
3754 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) {
3755 (void) fprintf(stderr,
3756 gettext("internal error: out of memory"));
3757 exit(1);
3758 }
3759
3760 while ((node = uu_avl_walk_next(walk)) != NULL) {
3761 uu_avl_remove(tree, node);
3762
3763 switch (op) {
3764 case OP_SHARE:
3765 if (zfs_unshareall_bypath(node->un_zhp,
3766 node->un_mountp) != 0)
3767 ret = 1;
3768 break;
3769
3770 case OP_MOUNT:
3771 if (zfs_unmount(node->un_zhp,
3772 node->un_mountp, flags) != 0)
3773 ret = 1;
3774 break;
3775 }
3776
3777 zfs_close(node->un_zhp);
3778 free(node->un_mountp);
3779 free(node);
3780 }
3781
3782 uu_avl_walk_end(walk);
3783 uu_avl_destroy(tree);
3784 uu_avl_pool_destroy(pool);
3785
3786 if (op == OP_SHARE) {
3787 /*
3788 * Finally, unshare any volumes shared via iSCSI.
3789 */
3790 zfs_handle_t **dslist = NULL;
3791 size_t i, count = 0;
3792
3793 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count,
3794 B_FALSE);
3795
3796 if (count != 0) {
3797 qsort(dslist, count, sizeof (void *),
3798 dataset_cmp);
3799
3800 for (i = 0; i < count; i++) {
3801 if (zfs_unshare_iscsi(dslist[i]) != 0)
3802 ret = 1;
3803 zfs_close(dslist[i]);
3804 }
3805
3806 free(dslist);
3807 }
3808 }
3809 } else {
3810 if (argc != 1) {
3811 if (argc == 0)
3812 (void) fprintf(stderr,
3813 gettext("missing filesystem argument\n"));
3814 else
3815 (void) fprintf(stderr,
3816 gettext("too many arguments\n"));
3817 usage(B_FALSE);
3818 }
3819
3820 /*
3821 * We have an argument, but it may be a full path or a ZFS
3822 * filesystem. Pass full paths off to unmount_path() (shared by
3823 * manual_unmount), otherwise open the filesystem and pass to
3824 * zfs_unmount().
3825 */
3826 if (argv[0][0] == '/')
3827 return (unshare_unmount_path(op, argv[0],
3828 flags, B_FALSE));
3829
3830 types = ZFS_TYPE_FILESYSTEM;
3831 if (op == OP_SHARE)
3832 types |= ZFS_TYPE_VOLUME;
3833
3834 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
3835 return (1);
3836
3837 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
3838 verify(zfs_prop_get(zhp, op == OP_SHARE ?
3839 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
3840 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL,
3841 NULL, 0, B_FALSE) == 0);
3842
3843 switch (op) {
3844 case OP_SHARE:
3845 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
3846 nfsiscsi_mnt_prop,
3847 sizeof (nfsiscsi_mnt_prop),
3848 NULL, NULL, 0, B_FALSE) == 0);
3849 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
3850 sharesmb, sizeof (sharesmb), NULL, NULL,
3851 0, B_FALSE) == 0);
3852
3853 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 &&
3854 strcmp(sharesmb, "off") == 0) {
3855 (void) fprintf(stderr, gettext("cannot "
3856 "unshare '%s': legacy share\n"),
3857 zfs_get_name(zhp));
3858 (void) fprintf(stderr, gettext("use "
3859 "unshare(1M) to unshare this "
3860 "filesystem\n"));
3861 ret = 1;
3862 } else if (!zfs_is_shared(zhp)) {
3863 (void) fprintf(stderr, gettext("cannot "
3864 "unshare '%s': not currently "
3865 "shared\n"), zfs_get_name(zhp));
3866 ret = 1;
3867 } else if (zfs_unshareall(zhp) != 0) {
3868 ret = 1;
3869 }
3870 break;
3871
3872 case OP_MOUNT:
3873 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) {
3874 (void) fprintf(stderr, gettext("cannot "
3875 "unmount '%s': legacy "
3876 "mountpoint\n"), zfs_get_name(zhp));
3877 (void) fprintf(stderr, gettext("use "
3878 "umount(1M) to unmount this "
3879 "filesystem\n"));
3880 ret = 1;
3881 } else if (!zfs_is_mounted(zhp, NULL)) {
3882 (void) fprintf(stderr, gettext("cannot "
3883 "unmount '%s': not currently "
3884 "mounted\n"),
3885 zfs_get_name(zhp));
3886 ret = 1;
3887 } else if (zfs_unmountall(zhp, flags) != 0) {
3888 ret = 1;
3889 }
3890 break;
3891 }
3892 } else {
3893 assert(op == OP_SHARE);
3894
3895 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI,
3896 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop),
3897 NULL, NULL, 0, B_FALSE) == 0);
3898
3899 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) {
3900 (void) fprintf(stderr, gettext("cannot unshare "
3901 "'%s': 'shareiscsi' property not set\n"),
3902 zfs_get_name(zhp));
3903 (void) fprintf(stderr, gettext("set "
3904 "'shareiscsi' property or use "
3905 "iscsitadm(1M) to share this volume\n"));
3906 ret = 1;
3907 } else if (!zfs_is_shared_iscsi(zhp)) {
3908 (void) fprintf(stderr, gettext("cannot "
3909 "unshare '%s': not currently shared\n"),
3910 zfs_get_name(zhp));
3911 ret = 1;
3912 } else if (zfs_unshare_iscsi(zhp) != 0) {
3913 ret = 1;
3914 }
3915 }
3916
3917 zfs_close(zhp);
3918 }
3919
3920 return (ret);
3921}
3922
3923/*
3924 * zfs unmount -a
3925 * zfs unmount filesystem
3926 *
3927 * Unmount all filesystems, or a specific ZFS filesystem.
3928 */
3929static int
3930zfs_do_unmount(int argc, char **argv)
3931{
3932 return (unshare_unmount(OP_MOUNT, argc, argv));
3933}
3934
3935/*
3936 * zfs unshare -a
3937 * zfs unshare filesystem
3938 *
3939 * Unshare all filesystems, or a specific ZFS filesystem.
3940 */
3941static int
3942zfs_do_unshare(int argc, char **argv)
3943{
3944 return (unshare_unmount(OP_SHARE, argc, argv));
3945}
3946
3947/*
3948 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is
3949 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'.
3950 */
3951static int
3952manual_mount(int argc, char **argv)
3953{
3954 zfs_handle_t *zhp;
3955 char mountpoint[ZFS_MAXPROPLEN];
3956 char mntopts[MNT_LINE_MAX] = { '\0' };
3957 int ret;
3958 int c;
3959 int flags = 0;
3960 char *dataset, *path;
3961
3962 /* check options */
3963 while ((c = getopt(argc, argv, ":mo:O")) != -1) {
3964 switch (c) {
3965 case 'o':
3966 (void) strlcpy(mntopts, optarg, sizeof (mntopts));
3967 break;
3968 case 'O':
3969 flags |= MS_OVERLAY;
3970 break;
3971 case 'm':
3972 flags |= MS_NOMNTTAB;
3973 break;
3974 case ':':
3975 (void) fprintf(stderr, gettext("missing argument for "
3976 "'%c' option\n"), optopt);
3977 usage(B_FALSE);
3978 break;
3979 case '?':
3980 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3981 optopt);
3982 (void) fprintf(stderr, gettext("usage: mount [-o opts] "
3983 "<path>\n"));
3984 return (2);
3985 }
3986 }
3987
3988 argc -= optind;
3989 argv += optind;
3990
3991 /* check that we only have two arguments */
3992 if (argc != 2) {
3993 if (argc == 0)
3994 (void) fprintf(stderr, gettext("missing dataset "
3995 "argument\n"));
3996 else if (argc == 1)
3997 (void) fprintf(stderr,
3998 gettext("missing mountpoint argument\n"));
3999 else
4000 (void) fprintf(stderr, gettext("too many arguments\n"));
4001 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
4002 return (2);
4003 }
4004
4005 dataset = argv[0];
4006 path = argv[1];
4007
4008 /* try to open the dataset */
4009 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
4010 return (1);
4011
4012 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
4013 sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
4014
4015 /* check for legacy mountpoint and complain appropriately */
4016 ret = 0;
4017 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
4018 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS,
4019 NULL, 0, mntopts, sizeof (mntopts)) != 0) {
4020 (void) fprintf(stderr, gettext("mount failed: %s\n"),
4021 strerror(errno));
4022 ret = 1;
4023 }
4024 } else {
4025 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
4026 "mounted using 'mount -F zfs'\n"), dataset);
4027 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
4028 "instead.\n"), path);
4029 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' "
4030 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n"));
4031 (void) fprintf(stderr, gettext("See zfs(1M) for more "
4032 "information.\n"));
4033 ret = 1;
4034 }
4035
4036 return (ret);
4037}
4038
4039/*
4040 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow
4041 * unmounts of non-legacy filesystems, as this is the dominant administrative
4042 * interface.
4043 */
4044static int
4045manual_unmount(int argc, char **argv)
4046{
4047 int flags = 0;
4048 int c;
4049
4050 /* check options */
4051 while ((c = getopt(argc, argv, "f")) != -1) {
4052 switch (c) {
4053 case 'f':
4054 flags = MS_FORCE;
4055 break;
4056 case '?':
4057 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4058 optopt);
4059 (void) fprintf(stderr, gettext("usage: unmount [-f] "
4060 "<path>\n"));
4061 return (2);
4062 }
4063 }
4064
4065 argc -= optind;
4066 argv += optind;
4067
4068 /* check arguments */
4069 if (argc != 1) {
4070 if (argc == 0)
4071 (void) fprintf(stderr, gettext("missing path "
4072 "argument\n"));
4073 else
4074 (void) fprintf(stderr, gettext("too many arguments\n"));
4075 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
4076 return (2);
4077 }
4078
4079 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
4080}
4081
4082static int
4083volcheck(zpool_handle_t *zhp, void *data)
4084{
4085 boolean_t isinit = *((boolean_t *)data);
4086
4087 if (isinit)
4088 return (zpool_create_zvol_links(zhp));
4089 else
4090 return (zpool_remove_zvol_links(zhp));
4091}
4092
4093/*
4094 * Iterate over all pools in the system and either create or destroy /dev/zvol
4095 * links, depending on the value of 'isinit'.
4096 */
4097static int
4098do_volcheck(boolean_t isinit)
4099{
4100 return (zpool_iter(g_zfs, volcheck, &isinit) ? 1 : 0);
4101}
4102
4103static int
4104find_command_idx(char *command, int *idx)
4105{
4106 int i;
4107
4108 for (i = 0; i < NCOMMAND; i++) {
4109 if (command_table[i].name == NULL)
4110 continue;
4111
4112 if (strcmp(command, command_table[i].name) == 0) {
4113 *idx = i;
4114 return (0);
4115 }
4116 }
4117 return (1);
4118}
4119
4120int
4121main(int argc, char **argv)
4122{
4123 int ret;
4124 int i;
4125 char *progname;
4126 char *cmdname;
4127
4128 (void) setlocale(LC_ALL, "");
4129 (void) textdomain(TEXT_DOMAIN);
4130
4131 opterr = 0;
4132
4133 if ((g_zfs = libzfs_init()) == NULL) {
4134 (void) fprintf(stderr, gettext("internal error: failed to "
4135 "initialize ZFS library\n"));
4136 return (1);
4137 }
4138
4139 zpool_set_history_str("zfs", argc, argv, history_str);
4140 verify(zpool_stage_history(g_zfs, history_str) == 0);
4141
4142 libzfs_print_on_error(g_zfs, B_TRUE);
4143
4144 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
4145 (void) fprintf(stderr, gettext("internal error: unable to "
4146 "open %s\n"), MNTTAB);
4147 return (1);
4148 }
4149
4150 /*
4151 * This command also doubles as the /etc/fs mount and unmount program.
4152 * Determine if we should take this behavior based on argv[0].
4153 */
4154 progname = basename(argv[0]);
4155 if (strcmp(progname, "mount") == 0) {
4156 ret = manual_mount(argc, argv);
4157 } else if (strcmp(progname, "umount") == 0) {
4158 ret = manual_unmount(argc, argv);
4159 } else {
4160 /*
4161 * Make sure the user has specified some command.
4162 */
4163 if (argc < 2) {
4164 (void) fprintf(stderr, gettext("missing command\n"));
4165 usage(B_FALSE);
4166 }
4167
4168 cmdname = argv[1];
4169
4170 /*
4171 * The 'umount' command is an alias for 'unmount'
4172 */
4173 if (strcmp(cmdname, "umount") == 0)
4174 cmdname = "unmount";
4175
4176 /*
4177 * The 'recv' command is an alias for 'receive'
4178 */
4179 if (strcmp(cmdname, "recv") == 0)
4180 cmdname = "receive";
4181
4182 /*
4183 * Special case '-?'
4184 */
4185 if (strcmp(cmdname, "-?") == 0)
4186 usage(B_TRUE);
4187
4188 /*
4189 * 'volinit' and 'volfini' do not appear in the usage message,
4190 * so we have to special case them here.
4191 */
4192 if (strcmp(cmdname, "volinit") == 0)
4193 return (do_volcheck(B_TRUE));
4194 else if (strcmp(cmdname, "volfini") == 0)
4195 return (do_volcheck(B_FALSE));
4196
4197 /*
4198 * Run the appropriate command.
4199 */
4200 if (find_command_idx(cmdname, &i) == 0) {
4201 current_command = &command_table[i];
4202 ret = command_table[i].func(argc - 1, argv + 1);
4203 } else if (strchr(cmdname, '=') != NULL) {
4204 verify(find_command_idx("set", &i) == 0);
4205 current_command = &command_table[i];
4206 ret = command_table[i].func(argc, argv);
4207 } else {
4208 (void) fprintf(stderr, gettext("unrecognized "
4209 "command '%s'\n"), cmdname);
4210 usage(B_FALSE);
4211 }
4212 }
4213
4214 (void) fclose(mnttab_file);
4215
4216 libzfs_fini(g_zfs);
4217
4218 /*
4219 * The 'ZFS_ABORT' environment variable causes us to dump core on exit
4220 * for the purposes of running ::findleaks.
4221 */
4222 if (getenv("ZFS_ABORT") != NULL) {
4223 (void) printf("dumping core by request\n");
4224 abort();
4225 }
4226
4227 return (ret);
4228}
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