]> git.proxmox.com Git - mirror_zfs.git/blame - cmd/zfs/zfs_main.c
projects / mirror_zfs.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Fix gcc unused variable warnings
[mirror_zfs.git] / cmd / zfs / zfs_main.c
CommitLineData
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/*
428870ff 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
34dc7c2f
BB		 24 */
25
34dc7c2f
BB		 26#include <assert.h>
27#include <ctype.h>
28#include <errno.h>
29#include <libgen.h>
30#include <libintl.h>
31#include <libuutil.h>
32#include <libnvpair.h>
33#include <locale.h>
34#include <stddef.h>
35#include <stdio.h>
36#include <stdlib.h>
37#include <strings.h>
38#include <unistd.h>
39#include <fcntl.h>
40#include <zone.h>
9babb374
BB		 41#include <grp.h>
42#include <pwd.h>
572e2857 43#include <signal.h>
34dc7c2f
BB		 44#include <sys/mkdev.h>
45#include <sys/mntent.h>
46#include <sys/mnttab.h>
47#include <sys/mount.h>
48#include <sys/stat.h>
9babb374 49#include <sys/fs/zfs.h>
428870ff
BB		 50#include <sys/types.h>
51#include <time.h>
34dc7c2f
BB		 52
53#include <libzfs.h>
54#include <libuutil.h>
55
56#include "zfs_iter.h"
57#include "zfs_util.h"
428870ff 58#include "zfs_comutil.h"
34dc7c2f
BB		 59
60libzfs_handle_t *g_zfs;
61
62static FILE *mnttab_file;
63static char history_str[HIS_MAX_RECORD_LEN];
9babb374 64const char *pypath = "/usr/lib/zfs/pyzfs.py";
34dc7c2f
BB		 65
66static int zfs_do_clone(int argc, char **argv);
67static int zfs_do_create(int argc, char **argv);
68static int zfs_do_destroy(int argc, char **argv);
69static int zfs_do_get(int argc, char **argv);
70static int zfs_do_inherit(int argc, char **argv);
71static int zfs_do_list(int argc, char **argv);
72static int zfs_do_mount(int argc, char **argv);
73static int zfs_do_rename(int argc, char **argv);
74static int zfs_do_rollback(int argc, char **argv);
75static int zfs_do_set(int argc, char **argv);
76static int zfs_do_upgrade(int argc, char **argv);
77static int zfs_do_snapshot(int argc, char **argv);
78static int zfs_do_unmount(int argc, char **argv);
79static int zfs_do_share(int argc, char **argv);
80static int zfs_do_unshare(int argc, char **argv);
81static int zfs_do_send(int argc, char **argv);
82static int zfs_do_receive(int argc, char **argv);
83static int zfs_do_promote(int argc, char **argv);
9babb374
BB		 84static int zfs_do_userspace(int argc, char **argv);
85static int zfs_do_python(int argc, char **argv);
45d1cae3
BB		 86static int zfs_do_hold(int argc, char **argv);
87static int zfs_do_release(int argc, char **argv);
572e2857 88static int zfs_do_diff(int argc, char **argv);
34dc7c2f
BB		 89
90/*
b128c09f 91 * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
34dc7c2f 92 */
b128c09f
BB		 93
94#ifdef DEBUG
34dc7c2f
BB		 95const char *
96_umem_debug_init(void)
97{
98 return ("default,verbose"); /* $UMEM_DEBUG setting */
99}
100
101const char *
102_umem_logging_init(void)
103{
104 return ("fail,contents"); /* $UMEM_LOGGING setting */
105}
b128c09f 106#endif
34dc7c2f
BB		 107
108typedef enum {
109 HELP_CLONE,
110 HELP_CREATE,
111 HELP_DESTROY,
112 HELP_GET,
113 HELP_INHERIT,
114 HELP_UPGRADE,
115 HELP_LIST,
116 HELP_MOUNT,
117 HELP_PROMOTE,
118 HELP_RECEIVE,
119 HELP_RENAME,
120 HELP_ROLLBACK,
121 HELP_SEND,
122 HELP_SET,
123 HELP_SHARE,
124 HELP_SNAPSHOT,
125 HELP_UNMOUNT,
126 HELP_UNSHARE,
127 HELP_ALLOW,
9babb374
BB		 128 HELP_UNALLOW,
129 HELP_USERSPACE,
45d1cae3
BB		 130 HELP_GROUPSPACE,
131 HELP_HOLD,
132 HELP_HOLDS,
572e2857
BB		 133 HELP_RELEASE,
134 HELP_DIFF
34dc7c2f
BB		 135} zfs_help_t;
136
137typedef struct zfs_command {
138 const char *name;
139 int (*func)(int argc, char **argv);
140 zfs_help_t usage;
141} zfs_command_t;
142
143/*
144 * Master command table. Each ZFS command has a name, associated function, and
145 * usage message. The usage messages need to be internationalized, so we have
146 * to have a function to return the usage message based on a command index.
147 *
148 * These commands are organized according to how they are displayed in the usage
149 * message. An empty command (one with a NULL name) indicates an empty line in
150 * the generic usage message.
151 */
152static zfs_command_t command_table[] = {
153 { "create", zfs_do_create, HELP_CREATE },
154 { "destroy", zfs_do_destroy, HELP_DESTROY },
155 { NULL },
156 { "snapshot", zfs_do_snapshot, HELP_SNAPSHOT },
157 { "rollback", zfs_do_rollback, HELP_ROLLBACK },
158 { "clone", zfs_do_clone, HELP_CLONE },
159 { "promote", zfs_do_promote, HELP_PROMOTE },
160 { "rename", zfs_do_rename, HELP_RENAME },
161 { NULL },
162 { "list", zfs_do_list, HELP_LIST },
163 { NULL },
164 { "set", zfs_do_set, HELP_SET },
428870ff 165 { "get", zfs_do_get, HELP_GET },
34dc7c2f
BB		 166 { "inherit", zfs_do_inherit, HELP_INHERIT },
167 { "upgrade", zfs_do_upgrade, HELP_UPGRADE },
9babb374
BB		 168 { "userspace", zfs_do_userspace, HELP_USERSPACE },
169 { "groupspace", zfs_do_userspace, HELP_GROUPSPACE },
34dc7c2f
BB		 170 { NULL },
171 { "mount", zfs_do_mount, HELP_MOUNT },
172 { "unmount", zfs_do_unmount, HELP_UNMOUNT },
173 { "share", zfs_do_share, HELP_SHARE },
174 { "unshare", zfs_do_unshare, HELP_UNSHARE },
175 { NULL },
176 { "send", zfs_do_send, HELP_SEND },
177 { "receive", zfs_do_receive, HELP_RECEIVE },
178 { NULL },
9babb374 179 { "allow", zfs_do_python, HELP_ALLOW },
34dc7c2f 180 { NULL },
9babb374 181 { "unallow", zfs_do_python, HELP_UNALLOW },
45d1cae3
BB		 182 { NULL },
183 { "hold", zfs_do_hold, HELP_HOLD },
184 { "holds", zfs_do_python, HELP_HOLDS },
185 { "release", zfs_do_release, HELP_RELEASE },
572e2857 186 { "diff", zfs_do_diff, HELP_DIFF },
34dc7c2f
BB		 187};
188
189#define NCOMMAND (sizeof (command_table) / sizeof (command_table[0]))
190
191zfs_command_t *current_command;
192
193static const char *
194get_usage(zfs_help_t idx)
195{
196 switch (idx) {
197 case HELP_CLONE:
b128c09f
BB		 198 return (gettext("\tclone [-p] [-o property=value] ... "
199 "<snapshot> <filesystem|volume>\n"));
34dc7c2f
BB		 200 case HELP_CREATE:
201 return (gettext("\tcreate [-p] [-o property=value] ... "
202 "<filesystem>\n"
203 "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
204 "-V <size> <volume>\n"));
205 case HELP_DESTROY:
428870ff
BB		 206 return (gettext("\tdestroy [-rRf] <filesystem|volume>\n"
207 "\tdestroy [-rRd] <snapshot>\n"));
34dc7c2f 208 case HELP_GET:
9babb374 209 return (gettext("\tget [-rHp] [-d max] "
428870ff 210 "[-o \"all\" | field[,...]] [-s source[,...]]\n"
34dc7c2f
BB		 211 "\t <\"all\" | property[,...]> "
212 "[filesystem|volume|snapshot] ...\n"));
213 case HELP_INHERIT:
428870ff 214 return (gettext("\tinherit [-rS] <property> "
b128c09f 215 "<filesystem|volume|snapshot> ...\n"));
34dc7c2f
BB		 216 case HELP_UPGRADE:
217 return (gettext("\tupgrade [-v]\n"
218 "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
219 case HELP_LIST:
9babb374
BB		 220 return (gettext("\tlist [-rH][-d max] "
221 "[-o property[,...]] [-t type[,...]] [-s property] ...\n"
34dc7c2f
BB		 222 "\t [-S property] ... "
223 "[filesystem|volume|snapshot] ...\n"));
224 case HELP_MOUNT:
225 return (gettext("\tmount\n"
226 "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
227 case HELP_PROMOTE:
228 return (gettext("\tpromote <clone-filesystem>\n"));
229 case HELP_RECEIVE:
428870ff 230 return (gettext("\treceive [-vnFu] <filesystem|volume|"
34dc7c2f 231 "snapshot>\n"
428870ff 232 "\treceive [-vnFu] [-d | -e] <filesystem>\n"));
34dc7c2f
BB		 233 case HELP_RENAME:
234 return (gettext("\trename <filesystem|volume|snapshot> "
235 "<filesystem|volume|snapshot>\n"
236 "\trename -p <filesystem|volume> <filesystem|volume>\n"
237 "\trename -r <snapshot> <snapshot>"));
238 case HELP_ROLLBACK:
239 return (gettext("\trollback [-rRf] <snapshot>\n"));
240 case HELP_SEND:
428870ff 241 return (gettext("\tsend [-RDp] [-[iI] snapshot] <snapshot>\n"));
34dc7c2f
BB		 242 case HELP_SET:
243 return (gettext("\tset <property=value> "
b128c09f 244 "<filesystem|volume|snapshot> ...\n"));
34dc7c2f
BB		 245 case HELP_SHARE:
246 return (gettext("\tshare <-a | filesystem>\n"));
247 case HELP_SNAPSHOT:
b128c09f 248 return (gettext("\tsnapshot [-r] [-o property=value] ... "
34dc7c2f
BB		 249 "<filesystem@snapname|volume@snapname>\n"));
250 case HELP_UNMOUNT:
251 return (gettext("\tunmount [-f] "
252 "<-a | filesystem|mountpoint>\n"));
253 case HELP_UNSHARE:
45d1cae3 254 return (gettext("\tunshare "
34dc7c2f
BB		 255 "<-a | filesystem|mountpoint>\n"));
256 case HELP_ALLOW:
9babb374
BB		 257 return (gettext("\tallow <filesystem|volume>\n"
258 "\tallow [-ldug] "
34dc7c2f
BB		 259 "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
260 "\t <filesystem|volume>\n"
261 "\tallow [-ld] -e <perm|@setname>[,...] "
262 "<filesystem|volume>\n"
263 "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
264 "\tallow -s @setname <perm|@setname>[,...] "
265 "<filesystem|volume>\n"));
266 case HELP_UNALLOW:
267 return (gettext("\tunallow [-rldug] "
268 "<\"everyone\"|user|group>[,...]\n"
269 "\t [<perm|@setname>[,...]] <filesystem|volume>\n"
270 "\tunallow [-rld] -e [<perm|@setname>[,...]] "
271 "<filesystem|volume>\n"
272 "\tunallow [-r] -c [<perm|@setname>[,...]] "
273 "<filesystem|volume>\n"
274 "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
275 "<filesystem|volume>\n"));
9babb374
BB		 276 case HELP_USERSPACE:
277 return (gettext("\tuserspace [-hniHp] [-o field[,...]] "
278 "[-sS field] ... [-t type[,...]]\n"
279 "\t <filesystem|snapshot>\n"));
280 case HELP_GROUPSPACE:
281 return (gettext("\tgroupspace [-hniHpU] [-o field[,...]] "
282 "[-sS field] ... [-t type[,...]]\n"
283 "\t <filesystem|snapshot>\n"));
45d1cae3
BB		 284 case HELP_HOLD:
285 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
286 case HELP_HOLDS:
287 return (gettext("\tholds [-r] <snapshot> ...\n"));
288 case HELP_RELEASE:
289 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
572e2857
BB		 290 case HELP_DIFF:
291 return (gettext("\tdiff [-FHt] <snapshot> "
292 "[snapshot|filesystem]\n"));
34dc7c2f
BB		 293 }
294
295 abort();
296 /* NOTREACHED */
297}
298
428870ff
BB		 299void
300nomem(void)
301{
302 (void) fprintf(stderr, gettext("internal error: out of memory\n"));
303 exit(1);
304}
305
34dc7c2f
BB		 306/*
307 * Utility function to guarantee malloc() success.
308 */
428870ff 309
34dc7c2f
BB		 310void *
311safe_malloc(size_t size)
312{
313 void *data;
314
428870ff
BB		 315 if ((data = calloc(1, size)) == NULL)
316 nomem();
34dc7c2f
BB		 317
318 return (data);
319}
320
428870ff
BB		 321static char *
322safe_strdup(char *str)
323{
324 char *dupstr = strdup(str);
325
326 if (dupstr == NULL)
327 nomem();
328
329 return (dupstr);
330}
331
34dc7c2f
BB		 332/*
333 * Callback routine that will print out information for each of
334 * the properties.
335 */
336static int
337usage_prop_cb(int prop, void *cb)
338{
339 FILE *fp = cb;
340
b128c09f 341 (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
34dc7c2f 342
b128c09f
BB		 343 if (zfs_prop_readonly(prop))
344 (void) fprintf(fp, " NO ");
34dc7c2f 345 else
b128c09f 346 (void) fprintf(fp, "YES ");
34dc7c2f
BB		 347
348 if (zfs_prop_inheritable(prop))
349 (void) fprintf(fp, " YES ");
350 else
351 (void) fprintf(fp, " NO ");
352
353 if (zfs_prop_values(prop) == NULL)
354 (void) fprintf(fp, "-\n");
355 else
356 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
357
358 return (ZPROP_CONT);
359}
360
361/*
362 * Display usage message. If we're inside a command, display only the usage for
363 * that command. Otherwise, iterate over the entire command table and display
364 * a complete usage message.
365 */
366static void
367usage(boolean_t requested)
368{
369 int i;
370 boolean_t show_properties = B_FALSE;
34dc7c2f
BB		 371 FILE *fp = requested ? stdout : stderr;
372
373 if (current_command == NULL) {
374
375 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
376 (void) fprintf(fp,
377 gettext("where 'command' is one of the following:\n\n"));
378
379 for (i = 0; i < NCOMMAND; i++) {
380 if (command_table[i].name == NULL)
381 (void) fprintf(fp, "\n");
382 else
383 (void) fprintf(fp, "%s",
384 get_usage(command_table[i].usage));
385 }
386
387 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
388 "pool/[dataset/]*dataset[@name]\n"));
389 } else {
390 (void) fprintf(fp, gettext("usage:\n"));
391 (void) fprintf(fp, "%s", get_usage(current_command->usage));
392 }
393
394 if (current_command != NULL &&
395 (strcmp(current_command->name, "set") == 0 ||
396 strcmp(current_command->name, "get") == 0 ||
397 strcmp(current_command->name, "inherit") == 0 ||
398 strcmp(current_command->name, "list") == 0))
399 show_properties = B_TRUE;
400
34dc7c2f 401 if (show_properties) {
34dc7c2f
BB		 402 (void) fprintf(fp,
403 gettext("\nThe following properties are supported:\n"));
404
405 (void) fprintf(fp, "\n\t%-14s %s %s %s\n\n",
406 "PROPERTY", "EDIT", "INHERIT", "VALUES");
407
408 /* Iterate over all properties */
409 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
410 ZFS_TYPE_DATASET);
411
9babb374
BB		 412 (void) fprintf(fp, "\t%-15s ", "userused@...");
413 (void) fprintf(fp, " NO NO <size>\n");
414 (void) fprintf(fp, "\t%-15s ", "groupused@...");
415 (void) fprintf(fp, " NO NO <size>\n");
416 (void) fprintf(fp, "\t%-15s ", "userquota@...");
417 (void) fprintf(fp, "YES NO <size> | none\n");
418 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
419 (void) fprintf(fp, "YES NO <size> | none\n");
420
34dc7c2f
BB		 421 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
422 "with standard units such as K, M, G, etc.\n"));
b128c09f 423 (void) fprintf(fp, gettext("\nUser-defined properties can "
34dc7c2f 424 "be specified by using a name containing a colon (:).\n"));
9babb374
BB		 425 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ "
426 "properties must be appended with\n"
427 "a user or group specifier of one of these forms:\n"
428 " POSIX name (eg: \"matt\")\n"
429 " POSIX id (eg: \"126829\")\n"
430 " SMB name@domain (eg: \"matt@sun\")\n"
431 " SMB SID (eg: \"S-1-234-567-89\")\n"));
34dc7c2f 432 } else {
34dc7c2f 433 (void) fprintf(fp,
fb5f0bc8
BB		 434 gettext("\nFor the property list, run: %s\n"),
435 "zfs set|get");
34dc7c2f 436 (void) fprintf(fp,
fb5f0bc8
BB		 437 gettext("\nFor the delegated permission list, run: %s\n"),
438 "zfs allow|unallow");
34dc7c2f
BB		 439 }
440
441 /*
442 * See comments at end of main().
443 */
444 if (getenv("ZFS_ABORT") != NULL) {
445 (void) printf("dumping core by request\n");
446 abort();
447 }
448
449 exit(requested ? 0 : 2);
450}
451
b128c09f
BB		 452static int
453parseprop(nvlist_t *props)
454{
455 char *propname = optarg;
456 char *propval, *strval;
457
458 if ((propval = strchr(propname, '=')) == NULL) {
459 (void) fprintf(stderr, gettext("missing "
460 "'=' for -o option\n"));
461 return (-1);
462 }
463 *propval = '\0';
464 propval++;
465 if (nvlist_lookup_string(props, propname, &strval) == 0) {
466 (void) fprintf(stderr, gettext("property '%s' "
467 "specified multiple times\n"), propname);
468 return (-1);
469 }
428870ff
BB		 470 if (nvlist_add_string(props, propname, propval) != 0)
471 nomem();
b128c09f 472 return (0);
b128c09f
BB		 473}
474
9babb374
BB		 475static int
476parse_depth(char *opt, int *flags)
477{
478 char *tmp;
479 int depth;
480
481 depth = (int)strtol(opt, &tmp, 0);
482 if (*tmp) {
483 (void) fprintf(stderr,
484 gettext("%s is not an integer\n"), optarg);
485 usage(B_FALSE);
486 }
487 if (depth < 0) {
488 (void) fprintf(stderr,
489 gettext("Depth can not be negative.\n"));
490 usage(B_FALSE);
491 }
492 *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
493 return (depth);
494}
495
428870ff
BB		 496#define PROGRESS_DELAY 2 /* seconds */
497
498static char *pt_reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b";
499static time_t pt_begin;
500static char *pt_header = NULL;
501static boolean_t pt_shown;
502
503static void
504start_progress_timer(void)
505{
506 pt_begin = time(NULL) + PROGRESS_DELAY;
507 pt_shown = B_FALSE;
508}
509
510static void
511set_progress_header(char *header)
512{
513 assert(pt_header == NULL);
514 pt_header = safe_strdup(header);
515 if (pt_shown) {
516 (void) printf("%s: ", header);
517 (void) fflush(stdout);
518 }
519}
520
521static void
522update_progress(char *update)
523{
524 if (!pt_shown && time(NULL) > pt_begin) {
525 int len = strlen(update);
526
527 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
528 pt_reverse);
529 (void) fflush(stdout);
530 pt_shown = B_TRUE;
531 } else if (pt_shown) {
532 int len = strlen(update);
533
534 (void) printf("%s%*.*s", update, len, len, pt_reverse);
535 (void) fflush(stdout);
536 }
537}
538
539static void
540finish_progress(char *done)
541{
542 if (pt_shown) {
543 (void) printf("%s\n", done);
544 (void) fflush(stdout);
545 }
546 free(pt_header);
547 pt_header = NULL;
548}
34dc7c2f 549/*
b128c09f 550 * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
34dc7c2f
BB		 551 *
552 * Given an existing dataset, create a writable copy whose initial contents
553 * are the same as the source. The newly created dataset maintains a
554 * dependency on the original; the original cannot be destroyed so long as
555 * the clone exists.
556 *
557 * The '-p' flag creates all the non-existing ancestors of the target first.
558 */
559static int
560zfs_do_clone(int argc, char **argv)
561{
b128c09f 562 zfs_handle_t *zhp = NULL;
34dc7c2f 563 boolean_t parents = B_FALSE;
b128c09f 564 nvlist_t *props;
34dc7c2f
BB		 565 int ret;
566 int c;
567
428870ff
BB		 568 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
569 nomem();
b128c09f 570
34dc7c2f 571 /* check options */
b128c09f 572 while ((c = getopt(argc, argv, "o:p")) != -1) {
34dc7c2f 573 switch (c) {
b128c09f
BB		 574 case 'o':
575 if (parseprop(props))
576 return (1);
577 break;
34dc7c2f
BB		 578 case 'p':
579 parents = B_TRUE;
580 break;
581 case '?':
582 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
583 optopt);
b128c09f 584 goto usage;
34dc7c2f
BB		 585 }
586 }
587
588 argc -= optind;
589 argv += optind;
590
591 /* check number of arguments */
592 if (argc < 1) {
593 (void) fprintf(stderr, gettext("missing source dataset "
594 "argument\n"));
b128c09f 595 goto usage;
34dc7c2f
BB		 596 }
597 if (argc < 2) {
598 (void) fprintf(stderr, gettext("missing target dataset "
599 "argument\n"));
b128c09f 600 goto usage;
34dc7c2f
BB		 601 }
602 if (argc > 2) {
603 (void) fprintf(stderr, gettext("too many arguments\n"));
b128c09f 604 goto usage;
34dc7c2f
BB		 605 }
606
607 /* open the source dataset */
608 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
609 return (1);
610
611 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
612 ZFS_TYPE_VOLUME)) {
613 /*
614 * Now create the ancestors of the target dataset. If the
615 * target already exists and '-p' option was used we should not
616 * complain.
617 */
618 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
619 ZFS_TYPE_VOLUME))
620 return (0);
621 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
622 return (1);
623 }
624
625 /* pass to libzfs */
b128c09f 626 ret = zfs_clone(zhp, argv[1], props);
34dc7c2f
BB		 627
628 /* create the mountpoint if necessary */
629 if (ret == 0) {
630 zfs_handle_t *clone;
631
632 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
633 if (clone != NULL) {
572e2857
BB		 634 if (zfs_get_type(clone) != ZFS_TYPE_VOLUME)
635 if ((ret = zfs_mount(clone, NULL, 0)) == 0)
636 ret = zfs_share(clone);
34dc7c2f
BB		 637 zfs_close(clone);
638 }
639 }
640
641 zfs_close(zhp);
b128c09f 642 nvlist_free(props);
34dc7c2f 643
b128c09f
BB		 644 return (!!ret);
645
646usage:
647 if (zhp)
648 zfs_close(zhp);
649 nvlist_free(props);
650 usage(B_FALSE);
651 return (-1);
34dc7c2f
BB		 652}
653
654/*
655 * zfs create [-p] [-o prop=value] ... fs
656 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
657 *
658 * Create a new dataset. This command can be used to create filesystems
659 * and volumes. Snapshot creation is handled by 'zfs snapshot'.
660 * For volumes, the user must specify a size to be used.
661 *
662 * The '-s' flag applies only to volumes, and indicates that we should not try
663 * to set the reservation for this volume. By default we set a reservation
664 * equal to the size for any volume. For pools with SPA_VERSION >=
665 * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
666 *
667 * The '-p' flag creates all the non-existing ancestors of the target first.
668 */
669static int
670zfs_do_create(int argc, char **argv)
671{
672 zfs_type_t type = ZFS_TYPE_FILESYSTEM;
673 zfs_handle_t *zhp = NULL;
674 uint64_t volsize;
675 int c;
676 boolean_t noreserve = B_FALSE;
677 boolean_t bflag = B_FALSE;
678 boolean_t parents = B_FALSE;
679 int ret = 1;
b128c09f 680 nvlist_t *props;
34dc7c2f 681 uint64_t intval;
572e2857 682 int canmount = ZFS_CANMOUNT_OFF;
34dc7c2f 683
428870ff
BB		 684 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
685 nomem();
34dc7c2f
BB		 686
687 /* check options */
688 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) {
689 switch (c) {
690 case 'V':
691 type = ZFS_TYPE_VOLUME;
692 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
693 (void) fprintf(stderr, gettext("bad volume "
694 "size '%s': %s\n"), optarg,
695 libzfs_error_description(g_zfs));
696 goto error;
697 }
698
699 if (nvlist_add_uint64(props,
428870ff
BB		 700 zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
701 nomem();
34dc7c2f
BB		 702 volsize = intval;
703 break;
704 case 'p':
705 parents = B_TRUE;
706 break;
707 case 'b':
708 bflag = B_TRUE;
709 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
710 (void) fprintf(stderr, gettext("bad volume "
711 "block size '%s': %s\n"), optarg,
712 libzfs_error_description(g_zfs));
713 goto error;
714 }
715
716 if (nvlist_add_uint64(props,
717 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
428870ff
BB		 718 intval) != 0)
719 nomem();
34dc7c2f
BB		 720 break;
721 case 'o':
b128c09f 722 if (parseprop(props))
34dc7c2f 723 goto error;
34dc7c2f
BB		 724 break;
725 case 's':
726 noreserve = B_TRUE;
727 break;
728 case ':':
729 (void) fprintf(stderr, gettext("missing size "
730 "argument\n"));
731 goto badusage;
732 break;
733 case '?':
734 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
735 optopt);
736 goto badusage;
737 }
738 }
739
740 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
741 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
742 "used when creating a volume\n"));
743 goto badusage;
744 }
745
746 argc -= optind;
747 argv += optind;
748
749 /* check number of arguments */
750 if (argc == 0) {
751 (void) fprintf(stderr, gettext("missing %s argument\n"),
752 zfs_type_to_name(type));
753 goto badusage;
754 }
755 if (argc > 1) {
756 (void) fprintf(stderr, gettext("too many arguments\n"));
757 goto badusage;
758 }
759
760 if (type == ZFS_TYPE_VOLUME && !noreserve) {
761 zpool_handle_t *zpool_handle;
762 uint64_t spa_version;
763 char *p;
764 zfs_prop_t resv_prop;
b128c09f 765 char *strval;
34dc7c2f 766
c65aa5b2 767 if ((p = strchr(argv[0], '/')))
34dc7c2f
BB		 768 *p = '\0';
769 zpool_handle = zpool_open(g_zfs, argv[0]);
770 if (p != NULL)
771 *p = '/';
772 if (zpool_handle == NULL)
773 goto error;
774 spa_version = zpool_get_prop_int(zpool_handle,
775 ZPOOL_PROP_VERSION, NULL);
776 zpool_close(zpool_handle);
777 if (spa_version >= SPA_VERSION_REFRESERVATION)
778 resv_prop = ZFS_PROP_REFRESERVATION;
779 else
780 resv_prop = ZFS_PROP_RESERVATION;
428870ff 781 volsize = zvol_volsize_to_reservation(volsize, props);
34dc7c2f
BB		 782
783 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
784 &strval) != 0) {
785 if (nvlist_add_uint64(props,
786 zfs_prop_to_name(resv_prop), volsize) != 0) {
34dc7c2f 787 nvlist_free(props);
428870ff 788 nomem();
34dc7c2f
BB		 789 }
790 }
791 }
792
793 if (parents && zfs_name_valid(argv[0], type)) {
794 /*
795 * Now create the ancestors of target dataset. If the target
796 * already exists and '-p' option was used we should not
797 * complain.
798 */
799 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
800 ret = 0;
801 goto error;
802 }
803 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
804 goto error;
805 }
806
807 /* pass to libzfs */
808 if (zfs_create(g_zfs, argv[0], type, props) != 0)
809 goto error;
810
811 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
812 goto error;
572e2857
BB		 813
814 ret = 0;
34dc7c2f
BB		 815 /*
816 * if the user doesn't want the dataset automatically mounted,
817 * then skip the mount/share step
818 */
572e2857
BB		 819 if (zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, type))
820 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
34dc7c2f
BB		 821
822 /*
823 * Mount and/or share the new filesystem as appropriate. We provide a
824 * verbose error message to let the user know that their filesystem was
825 * in fact created, even if we failed to mount or share it.
826 */
34dc7c2f
BB		 827 if (canmount == ZFS_CANMOUNT_ON) {
828 if (zfs_mount(zhp, NULL, 0) != 0) {
829 (void) fprintf(stderr, gettext("filesystem "
830 "successfully created, but not mounted\n"));
831 ret = 1;
832 } else if (zfs_share(zhp) != 0) {
833 (void) fprintf(stderr, gettext("filesystem "
834 "successfully created, but not shared\n"));
835 ret = 1;
836 }
837 }
838
839error:
840 if (zhp)
841 zfs_close(zhp);
842 nvlist_free(props);
843 return (ret);
844badusage:
845 nvlist_free(props);
846 usage(B_FALSE);
847 return (2);
848}
849
850/*
428870ff
BB		 851 * zfs destroy [-rRf] <fs, vol>
852 * zfs destroy [-rRd] <snap>
34dc7c2f 853 *
428870ff
BB		 854 * -r Recursively destroy all children
855 * -R Recursively destroy all dependents, including clones
856 * -f Force unmounting of any dependents
45d1cae3 857 * -d If we can't destroy now, mark for deferred destruction
34dc7c2f
BB		 858 *
859 * Destroys the given dataset. By default, it will unmount any filesystems,
860 * and refuse to destroy a dataset that has any dependents. A dependent can
861 * either be a child, or a clone of a child.
862 */
863typedef struct destroy_cbdata {
864 boolean_t cb_first;
865 int cb_force;
866 int cb_recurse;
867 int cb_error;
868 int cb_needforce;
869 int cb_doclones;
870 boolean_t cb_closezhp;
871 zfs_handle_t *cb_target;
872 char *cb_snapname;
45d1cae3 873 boolean_t cb_defer_destroy;
34dc7c2f
BB		 874} destroy_cbdata_t;
875
876/*
877 * Check for any dependents based on the '-r' or '-R' flags.
878 */
879static int
880destroy_check_dependent(zfs_handle_t *zhp, void *data)
881{
882 destroy_cbdata_t *cbp = data;
883 const char *tname = zfs_get_name(cbp->cb_target);
884 const char *name = zfs_get_name(zhp);
885
886 if (strncmp(tname, name, strlen(tname)) == 0 &&
887 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
888 /*
889 * This is a direct descendant, not a clone somewhere else in
890 * the hierarchy.
891 */
892 if (cbp->cb_recurse)
893 goto out;
894
895 if (cbp->cb_first) {
896 (void) fprintf(stderr, gettext("cannot destroy '%s': "
897 "%s has children\n"),
898 zfs_get_name(cbp->cb_target),
899 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
900 (void) fprintf(stderr, gettext("use '-r' to destroy "
901 "the following datasets:\n"));
902 cbp->cb_first = B_FALSE;
903 cbp->cb_error = 1;
904 }
905
906 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
907 } else {
908 /*
909 * This is a clone. We only want to report this if the '-r'
910 * wasn't specified, or the target is a snapshot.
911 */
912 if (!cbp->cb_recurse &&
913 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
914 goto out;
915
916 if (cbp->cb_first) {
917 (void) fprintf(stderr, gettext("cannot destroy '%s': "
918 "%s has dependent clones\n"),
919 zfs_get_name(cbp->cb_target),
920 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
921 (void) fprintf(stderr, gettext("use '-R' to destroy "
922 "the following datasets:\n"));
923 cbp->cb_first = B_FALSE;
924 cbp->cb_error = 1;
925 }
926
927 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
928 }
929
930out:
931 zfs_close(zhp);
932 return (0);
933}
934
935static int
936destroy_callback(zfs_handle_t *zhp, void *data)
937{
938 destroy_cbdata_t *cbp = data;
939
940 /*
941 * Ignore pools (which we've already flagged as an error before getting
428870ff 942 * here).
34dc7c2f
BB		 943 */
944 if (strchr(zfs_get_name(zhp), '/') == NULL &&
945 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
946 zfs_close(zhp);
947 return (0);
948 }
949
950 /*
951 * Bail out on the first error.
952 */
953 if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 ||
45d1cae3 954 zfs_destroy(zhp, cbp->cb_defer_destroy) != 0) {
34dc7c2f
BB		 955 zfs_close(zhp);
956 return (-1);
957 }
958
959 zfs_close(zhp);
960 return (0);
961}
962
963static int
964destroy_snap_clones(zfs_handle_t *zhp, void *arg)
965{
966 destroy_cbdata_t *cbp = arg;
967 char thissnap[MAXPATHLEN];
968 zfs_handle_t *szhp;
969 boolean_t closezhp = cbp->cb_closezhp;
970 int rv;
971
972 (void) snprintf(thissnap, sizeof (thissnap),
973 "%s@%s", zfs_get_name(zhp), cbp->cb_snapname);
974
975 libzfs_print_on_error(g_zfs, B_FALSE);
976 szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT);
977 libzfs_print_on_error(g_zfs, B_TRUE);
978 if (szhp) {
979 /*
980 * Destroy any clones of this snapshot
981 */
982 if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback,
983 cbp) != 0) {
984 zfs_close(szhp);
985 if (closezhp)
986 zfs_close(zhp);
987 return (-1);
988 }
989 zfs_close(szhp);
990 }
991
992 cbp->cb_closezhp = B_TRUE;
993 rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg);
994 if (closezhp)
995 zfs_close(zhp);
996 return (rv);
997}
998
999static int
1000zfs_do_destroy(int argc, char **argv)
1001{
1002 destroy_cbdata_t cb = { 0 };
1003 int c;
1004 zfs_handle_t *zhp;
1005 char *cp;
428870ff 1006 zfs_type_t type = ZFS_TYPE_DATASET;
34dc7c2f
BB		 1007
1008 /* check options */
45d1cae3 1009 while ((c = getopt(argc, argv, "dfrR")) != -1) {
34dc7c2f 1010 switch (c) {
45d1cae3
BB		 1011 case 'd':
1012 cb.cb_defer_destroy = B_TRUE;
428870ff 1013 type = ZFS_TYPE_SNAPSHOT;
45d1cae3 1014 break;
34dc7c2f
BB		 1015 case 'f':
1016 cb.cb_force = 1;
1017 break;
1018 case 'r':
1019 cb.cb_recurse = 1;
1020 break;
1021 case 'R':
1022 cb.cb_recurse = 1;
1023 cb.cb_doclones = 1;
1024 break;
1025 case '?':
1026 default:
1027 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1028 optopt);
1029 usage(B_FALSE);
1030 }
1031 }
1032
1033 argc -= optind;
1034 argv += optind;
1035
1036 /* check number of arguments */
1037 if (argc == 0) {
1038 (void) fprintf(stderr, gettext("missing path argument\n"));
1039 usage(B_FALSE);
1040 }
1041 if (argc > 1) {
1042 (void) fprintf(stderr, gettext("too many arguments\n"));
1043 usage(B_FALSE);
1044 }
1045
1046 /*
1047 * If we are doing recursive destroy of a snapshot, then the
1048 * named snapshot may not exist. Go straight to libzfs.
1049 */
1050 if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) {
1051 int ret;
1052
1053 *cp = '\0';
1054 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
1055 return (1);
1056 *cp = '@';
1057 cp++;
1058
1059 if (cb.cb_doclones) {
428870ff
BB		 1060 boolean_t defer = cb.cb_defer_destroy;
1061
1062 /*
1063 * Temporarily ignore the defer_destroy setting since
1064 * it's not supported for clones.
1065 */
1066 cb.cb_defer_destroy = B_FALSE;
34dc7c2f
BB		 1067 cb.cb_snapname = cp;
1068 if (destroy_snap_clones(zhp, &cb) != 0) {
1069 zfs_close(zhp);
1070 return (1);
1071 }
428870ff 1072 cb.cb_defer_destroy = defer;
34dc7c2f
BB		 1073 }
1074
45d1cae3 1075 ret = zfs_destroy_snaps(zhp, cp, cb.cb_defer_destroy);
34dc7c2f
BB		 1076 zfs_close(zhp);
1077 if (ret) {
1078 (void) fprintf(stderr,
1079 gettext("no snapshots destroyed\n"));
1080 }
1081 return (ret != 0);
1082 }
1083
34dc7c2f 1084 /* Open the given dataset */
428870ff 1085 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
34dc7c2f
BB		 1086 return (1);
1087
1088 cb.cb_target = zhp;
1089
1090 /*
1091 * Perform an explicit check for pools before going any further.
1092 */
1093 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1094 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1095 (void) fprintf(stderr, gettext("cannot destroy '%s': "
1096 "operation does not apply to pools\n"),
1097 zfs_get_name(zhp));
1098 (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1099 "%s' to destroy all datasets in the pool\n"),
1100 zfs_get_name(zhp));
1101 (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1102 "to destroy the pool itself\n"), zfs_get_name(zhp));
1103 zfs_close(zhp);
1104 return (1);
1105 }
1106
1107 /*
1108 * Check for any dependents and/or clones.
1109 */
1110 cb.cb_first = B_TRUE;
45d1cae3 1111 if (!cb.cb_doclones && !cb.cb_defer_destroy &&
34dc7c2f
BB		 1112 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1113 &cb) != 0) {
1114 zfs_close(zhp);
1115 return (1);
1116 }
1117
45d1cae3
BB		 1118 if (cb.cb_error || (!cb.cb_defer_destroy &&
1119 (zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0))) {
34dc7c2f
BB		 1120 zfs_close(zhp);
1121 return (1);
1122 }
1123
1124 /*
1125 * Do the real thing. The callback will close the handle regardless of
1126 * whether it succeeds or not.
1127 */
1128
1129 if (destroy_callback(zhp, &cb) != 0)
1130 return (1);
1131
34dc7c2f
BB		 1132 return (0);
1133}
1134
428870ff
BB		 1135static boolean_t
1136is_recvd_column(zprop_get_cbdata_t *cbp)
1137{
1138 int i;
1139 zfs_get_column_t col;
1140
1141 for (i = 0; i < ZFS_GET_NCOLS &&
1142 (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1143 if (col == GET_COL_RECVD)
1144 return (B_TRUE);
1145 return (B_FALSE);
1146}
1147
34dc7c2f 1148/*
428870ff
BB		 1149 * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1150 * < all | property[,property]... > < fs | snap | vol > ...
34dc7c2f
BB		 1151 *
1152 * -r recurse over any child datasets
1153 * -H scripted mode. Headers are stripped, and fields are separated
1154 * by tabs instead of spaces.
428870ff
BB		 1155 * -o Set of fields to display. One of "name,property,value,
1156 * received,source". Default is "name,property,value,source".
1157 * "all" is an alias for all five.
34dc7c2f 1158 * -s Set of sources to allow. One of
428870ff
BB		 1159 * "local,default,inherited,received,temporary,none". Default is
1160 * all six.
34dc7c2f
BB		 1161 * -p Display values in parsable (literal) format.
1162 *
1163 * Prints properties for the given datasets. The user can control which
1164 * columns to display as well as which property types to allow.
1165 */
1166
1167/*
1168 * Invoked to display the properties for a single dataset.
1169 */
1170static int
1171get_callback(zfs_handle_t *zhp, void *data)
1172{
1173 char buf[ZFS_MAXPROPLEN];
428870ff 1174 char rbuf[ZFS_MAXPROPLEN];
34dc7c2f
BB		 1175 zprop_source_t sourcetype;
1176 char source[ZFS_MAXNAMELEN];
1177 zprop_get_cbdata_t *cbp = data;
428870ff 1178 nvlist_t *user_props = zfs_get_user_props(zhp);
34dc7c2f
BB		 1179 zprop_list_t *pl = cbp->cb_proplist;
1180 nvlist_t *propval;
1181 char *strval;
1182 char *sourceval;
428870ff 1183 boolean_t received = is_recvd_column(cbp);
34dc7c2f
BB		 1184
1185 for (; pl != NULL; pl = pl->pl_next) {
428870ff 1186 char *recvdval = NULL;
34dc7c2f
BB		 1187 /*
1188 * Skip the special fake placeholder. This will also skip over
1189 * the name property when 'all' is specified.
1190 */
1191 if (pl->pl_prop == ZFS_PROP_NAME &&
1192 pl == cbp->cb_proplist)
1193 continue;
1194
1195 if (pl->pl_prop != ZPROP_INVAL) {
1196 if (zfs_prop_get(zhp, pl->pl_prop, buf,
1197 sizeof (buf), &sourcetype, source,
1198 sizeof (source),
1199 cbp->cb_literal) != 0) {
1200 if (pl->pl_all)
1201 continue;
1202 if (!zfs_prop_valid_for_type(pl->pl_prop,
1203 ZFS_TYPE_DATASET)) {
1204 (void) fprintf(stderr,
1205 gettext("No such property '%s'\n"),
1206 zfs_prop_to_name(pl->pl_prop));
1207 continue;
1208 }
1209 sourcetype = ZPROP_SRC_NONE;
1210 (void) strlcpy(buf, "-", sizeof (buf));
1211 }
1212
428870ff
BB		 1213 if (received && (zfs_prop_get_recvd(zhp,
1214 zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1215 cbp->cb_literal) == 0))
1216 recvdval = rbuf;
1217
34dc7c2f
BB		 1218 zprop_print_one_property(zfs_get_name(zhp), cbp,
1219 zfs_prop_to_name(pl->pl_prop),
428870ff 1220 buf, sourcetype, source, recvdval);
9babb374
BB		 1221 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1222 sourcetype = ZPROP_SRC_LOCAL;
1223
1224 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1225 buf, sizeof (buf), cbp->cb_literal) != 0) {
1226 sourcetype = ZPROP_SRC_NONE;
1227 (void) strlcpy(buf, "-", sizeof (buf));
1228 }
1229
1230 zprop_print_one_property(zfs_get_name(zhp), cbp,
428870ff 1231 pl->pl_user_prop, buf, sourcetype, source, NULL);
34dc7c2f 1232 } else {
428870ff 1233 if (nvlist_lookup_nvlist(user_props,
34dc7c2f
BB		 1234 pl->pl_user_prop, &propval) != 0) {
1235 if (pl->pl_all)
1236 continue;
1237 sourcetype = ZPROP_SRC_NONE;
1238 strval = "-";
1239 } else {
1240 verify(nvlist_lookup_string(propval,
1241 ZPROP_VALUE, &strval) == 0);
1242 verify(nvlist_lookup_string(propval,
1243 ZPROP_SOURCE, &sourceval) == 0);
1244
1245 if (strcmp(sourceval,
1246 zfs_get_name(zhp)) == 0) {
1247 sourcetype = ZPROP_SRC_LOCAL;
428870ff
BB		 1248 } else if (strcmp(sourceval,
1249 ZPROP_SOURCE_VAL_RECVD) == 0) {
1250 sourcetype = ZPROP_SRC_RECEIVED;
34dc7c2f
BB		 1251 } else {
1252 sourcetype = ZPROP_SRC_INHERITED;
1253 (void) strlcpy(source,
1254 sourceval, sizeof (source));
1255 }
1256 }
1257
428870ff
BB		 1258 if (received && (zfs_prop_get_recvd(zhp,
1259 pl->pl_user_prop, rbuf, sizeof (rbuf),
1260 cbp->cb_literal) == 0))
1261 recvdval = rbuf;
1262
34dc7c2f
BB		 1263 zprop_print_one_property(zfs_get_name(zhp), cbp,
1264 pl->pl_user_prop, strval, sourcetype,
428870ff 1265 source, recvdval);
34dc7c2f
BB		 1266 }
1267 }
1268
1269 return (0);
1270}
1271
1272static int
1273zfs_do_get(int argc, char **argv)
1274{
1275 zprop_get_cbdata_t cb = { 0 };
b128c09f 1276 int i, c, flags = 0;
34dc7c2f
BB		 1277 char *value, *fields;
1278 int ret;
9babb374 1279 int limit = 0;
34dc7c2f
BB		 1280 zprop_list_t fake_name = { 0 };
1281
1282 /*
1283 * Set up default columns and sources.
1284 */
1285 cb.cb_sources = ZPROP_SRC_ALL;
1286 cb.cb_columns[0] = GET_COL_NAME;
1287 cb.cb_columns[1] = GET_COL_PROPERTY;
1288 cb.cb_columns[2] = GET_COL_VALUE;
1289 cb.cb_columns[3] = GET_COL_SOURCE;
1290 cb.cb_type = ZFS_TYPE_DATASET;
1291
1292 /* check options */
9babb374 1293 while ((c = getopt(argc, argv, ":d:o:s:rHp")) != -1) {
34dc7c2f
BB		 1294 switch (c) {
1295 case 'p':
1296 cb.cb_literal = B_TRUE;
1297 break;
9babb374
BB		 1298 case 'd':
1299 limit = parse_depth(optarg, &flags);
1300 break;
34dc7c2f 1301 case 'r':
b128c09f 1302 flags |= ZFS_ITER_RECURSE;
34dc7c2f
BB		 1303 break;
1304 case 'H':
1305 cb.cb_scripted = B_TRUE;
1306 break;
1307 case ':':
1308 (void) fprintf(stderr, gettext("missing argument for "
1309 "'%c' option\n"), optopt);
1310 usage(B_FALSE);
1311 break;
1312 case 'o':
1313 /*
1314 * Process the set of columns to display. We zero out
1315 * the structure to give us a blank slate.
1316 */
1317 bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1318 i = 0;
1319 while (*optarg != '\0') {
1320 static char *col_subopts[] =
428870ff
BB		 1321 { "name", "property", "value", "received",
1322 "source", "all", NULL };
34dc7c2f 1323
428870ff 1324 if (i == ZFS_GET_NCOLS) {
34dc7c2f
BB		 1325 (void) fprintf(stderr, gettext("too "
1326 "many fields given to -o "
1327 "option\n"));
1328 usage(B_FALSE);
1329 }
1330
1331 switch (getsubopt(&optarg, col_subopts,
1332 &value)) {
1333 case 0:
1334 cb.cb_columns[i++] = GET_COL_NAME;
1335 break;
1336 case 1:
1337 cb.cb_columns[i++] = GET_COL_PROPERTY;
1338 break;
1339 case 2:
1340 cb.cb_columns[i++] = GET_COL_VALUE;
1341 break;
1342 case 3:
428870ff
BB		 1343 cb.cb_columns[i++] = GET_COL_RECVD;
1344 flags |= ZFS_ITER_RECVD_PROPS;
1345 break;
1346 case 4:
34dc7c2f
BB		 1347 cb.cb_columns[i++] = GET_COL_SOURCE;
1348 break;
428870ff
BB		 1349 case 5:
1350 if (i > 0) {
1351 (void) fprintf(stderr,
1352 gettext("\"all\" conflicts "
1353 "with specific fields "
1354 "given to -o option\n"));
1355 usage(B_FALSE);
1356 }
1357 cb.cb_columns[0] = GET_COL_NAME;
1358 cb.cb_columns[1] = GET_COL_PROPERTY;
1359 cb.cb_columns[2] = GET_COL_VALUE;
1360 cb.cb_columns[3] = GET_COL_RECVD;
1361 cb.cb_columns[4] = GET_COL_SOURCE;
1362 flags |= ZFS_ITER_RECVD_PROPS;
1363 i = ZFS_GET_NCOLS;
1364 break;
34dc7c2f
BB		 1365 default:
1366 (void) fprintf(stderr,
1367 gettext("invalid column name "
1368 "'%s'\n"), value);
1369 usage(B_FALSE);
1370 }
1371 }
1372 break;
1373
1374 case 's':
1375 cb.cb_sources = 0;
1376 while (*optarg != '\0') {
1377 static char *source_subopts[] = {
1378 "local", "default", "inherited",
428870ff
BB		 1379 "received", "temporary", "none",
1380 NULL };
34dc7c2f
BB		 1381
1382 switch (getsubopt(&optarg, source_subopts,
1383 &value)) {
1384 case 0:
1385 cb.cb_sources |= ZPROP_SRC_LOCAL;
1386 break;
1387 case 1:
1388 cb.cb_sources |= ZPROP_SRC_DEFAULT;
1389 break;
1390 case 2:
1391 cb.cb_sources |= ZPROP_SRC_INHERITED;
1392 break;
1393 case 3:
428870ff 1394 cb.cb_sources |= ZPROP_SRC_RECEIVED;
34dc7c2f
BB		 1395 break;
1396 case 4:
428870ff
BB		 1397 cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1398 break;
1399 case 5:
34dc7c2f
BB		 1400 cb.cb_sources |= ZPROP_SRC_NONE;
1401 break;
1402 default:
1403 (void) fprintf(stderr,
1404 gettext("invalid source "
1405 "'%s'\n"), value);
1406 usage(B_FALSE);
1407 }
1408 }
1409 break;
1410
1411 case '?':
1412 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1413 optopt);
1414 usage(B_FALSE);
1415 }
1416 }
1417
1418 argc -= optind;
1419 argv += optind;
1420
1421 if (argc < 1) {
1422 (void) fprintf(stderr, gettext("missing property "
1423 "argument\n"));
1424 usage(B_FALSE);
1425 }
1426
1427 fields = argv[0];
1428
1429 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1430 != 0)
1431 usage(B_FALSE);
1432
1433 argc--;
1434 argv++;
1435
1436 /*
1437 * As part of zfs_expand_proplist(), we keep track of the maximum column
1438 * width for each property. For the 'NAME' (and 'SOURCE') columns, we
1439 * need to know the maximum name length. However, the user likely did
1440 * not specify 'name' as one of the properties to fetch, so we need to
1441 * make sure we always include at least this property for
1442 * print_get_headers() to work properly.
1443 */
1444 if (cb.cb_proplist != NULL) {
1445 fake_name.pl_prop = ZFS_PROP_NAME;
1446 fake_name.pl_width = strlen(gettext("NAME"));
1447 fake_name.pl_next = cb.cb_proplist;
1448 cb.cb_proplist = &fake_name;
1449 }
1450
1451 cb.cb_first = B_TRUE;
1452
1453 /* run for each object */
b128c09f 1454 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, NULL,
9babb374 1455 &cb.cb_proplist, limit, get_callback, &cb);
34dc7c2f
BB		 1456
1457 if (cb.cb_proplist == &fake_name)
1458 zprop_free_list(fake_name.pl_next);
1459 else
1460 zprop_free_list(cb.cb_proplist);
1461
1462 return (ret);
1463}
1464
1465/*
428870ff 1466 * inherit [-rS] <property> <fs|vol> ...
34dc7c2f 1467 *
428870ff
BB		 1468 * -r Recurse over all children
1469 * -S Revert to received value, if any
34dc7c2f
BB		 1470 *
1471 * For each dataset specified on the command line, inherit the given property
1472 * from its parent. Inheriting a property at the pool level will cause it to
1473 * use the default value. The '-r' flag will recurse over all children, and is
1474 * useful for setting a property on a hierarchy-wide basis, regardless of any
1475 * local modifications for each dataset.
1476 */
1477
428870ff
BB		 1478typedef struct inherit_cbdata {
1479 const char *cb_propname;
1480 boolean_t cb_received;
1481} inherit_cbdata_t;
1482
34dc7c2f 1483static int
b128c09f 1484inherit_recurse_cb(zfs_handle_t *zhp, void *data)
34dc7c2f 1485{
428870ff
BB		 1486 inherit_cbdata_t *cb = data;
1487 zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
34dc7c2f 1488
b128c09f
BB		 1489 /*
1490 * If we're doing it recursively, then ignore properties that
1491 * are not valid for this type of dataset.
1492 */
1493 if (prop != ZPROP_INVAL &&
1494 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1495 return (0);
1496
428870ff 1497 return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
b128c09f
BB		 1498}
1499
1500static int
1501inherit_cb(zfs_handle_t *zhp, void *data)
1502{
428870ff 1503 inherit_cbdata_t *cb = data;
b128c09f 1504
428870ff 1505 return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
34dc7c2f
BB		 1506}
1507
1508static int
1509zfs_do_inherit(int argc, char **argv)
1510{
34dc7c2f
BB		 1511 int c;
1512 zfs_prop_t prop;
428870ff 1513 inherit_cbdata_t cb = { 0 };
34dc7c2f
BB		 1514 char *propname;
1515 int ret;
b128c09f 1516 int flags = 0;
428870ff 1517 boolean_t received = B_FALSE;
34dc7c2f
BB		 1518
1519 /* check options */
428870ff 1520 while ((c = getopt(argc, argv, "rS")) != -1) {
34dc7c2f
BB		 1521 switch (c) {
1522 case 'r':
b128c09f 1523 flags |= ZFS_ITER_RECURSE;
34dc7c2f 1524 break;
428870ff
BB		 1525 case 'S':
1526 received = B_TRUE;
1527 break;
34dc7c2f
BB		 1528 case '?':
1529 default:
1530 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1531 optopt);
1532 usage(B_FALSE);
1533 }
1534 }
1535
1536 argc -= optind;
1537 argv += optind;
1538
1539 /* check number of arguments */
1540 if (argc < 1) {
1541 (void) fprintf(stderr, gettext("missing property argument\n"));
1542 usage(B_FALSE);
1543 }
1544 if (argc < 2) {
1545 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1546 usage(B_FALSE);
1547 }
1548
1549 propname = argv[0];
1550 argc--;
1551 argv++;
1552
1553 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1554 if (zfs_prop_readonly(prop)) {
1555 (void) fprintf(stderr, gettext(
1556 "%s property is read-only\n"),
1557 propname);
1558 return (1);
1559 }
428870ff 1560 if (!zfs_prop_inheritable(prop) && !received) {
34dc7c2f
BB		 1561 (void) fprintf(stderr, gettext("'%s' property cannot "
1562 "be inherited\n"), propname);
1563 if (prop == ZFS_PROP_QUOTA ||
1564 prop == ZFS_PROP_RESERVATION ||
1565 prop == ZFS_PROP_REFQUOTA ||
1566 prop == ZFS_PROP_REFRESERVATION)
1567 (void) fprintf(stderr, gettext("use 'zfs set "
1568 "%s=none' to clear\n"), propname);
1569 return (1);
1570 }
428870ff
BB		 1571 if (received && (prop == ZFS_PROP_VOLSIZE ||
1572 prop == ZFS_PROP_VERSION)) {
1573 (void) fprintf(stderr, gettext("'%s' property cannot "
1574 "be reverted to a received value\n"), propname);
1575 return (1);
1576 }
34dc7c2f
BB		 1577 } else if (!zfs_prop_user(propname)) {
1578 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1579 propname);
1580 usage(B_FALSE);
1581 }
1582
428870ff
BB		 1583 cb.cb_propname = propname;
1584 cb.cb_received = received;
1585
b128c09f
BB		 1586 if (flags & ZFS_ITER_RECURSE) {
1587 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
428870ff 1588 NULL, NULL, 0, inherit_recurse_cb, &cb);
b128c09f
BB		 1589 } else {
1590 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
428870ff 1591 NULL, NULL, 0, inherit_cb, &cb);
b128c09f 1592 }
34dc7c2f
BB		 1593
1594 return (ret);
1595}
1596
1597typedef struct upgrade_cbdata {
1598 uint64_t cb_numupgraded;
1599 uint64_t cb_numsamegraded;
1600 uint64_t cb_numfailed;
1601 uint64_t cb_version;
1602 boolean_t cb_newer;
1603 boolean_t cb_foundone;
1604 char cb_lastfs[ZFS_MAXNAMELEN];
1605} upgrade_cbdata_t;
1606
1607static int
1608same_pool(zfs_handle_t *zhp, const char *name)
1609{
1610 int len1 = strcspn(name, "/@");
1611 const char *zhname = zfs_get_name(zhp);
1612 int len2 = strcspn(zhname, "/@");
1613
1614 if (len1 != len2)
1615 return (B_FALSE);
1616 return (strncmp(name, zhname, len1) == 0);
1617}
1618
1619static int
1620upgrade_list_callback(zfs_handle_t *zhp, void *data)
1621{
1622 upgrade_cbdata_t *cb = data;
1623 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1624
1625 /* list if it's old/new */
1626 if ((!cb->cb_newer && version < ZPL_VERSION) ||
1627 (cb->cb_newer && version > ZPL_VERSION)) {
1628 char *str;
1629 if (cb->cb_newer) {
1630 str = gettext("The following filesystems are "
1631 "formatted using a newer software version and\n"
1632 "cannot be accessed on the current system.\n\n");
1633 } else {
1634 str = gettext("The following filesystems are "
1635 "out of date, and can be upgraded. After being\n"
1636 "upgraded, these filesystems (and any 'zfs send' "
1637 "streams generated from\n"
1638 "subsequent snapshots) will no longer be "
1639 "accessible by older software versions.\n\n");
1640 }
1641
1642 if (!cb->cb_foundone) {
1643 (void) puts(str);
1644 (void) printf(gettext("VER FILESYSTEM\n"));
1645 (void) printf(gettext("--- ------------\n"));
1646 cb->cb_foundone = B_TRUE;
1647 }
1648
1649 (void) printf("%2u %s\n", version, zfs_get_name(zhp));
1650 }
1651
1652 return (0);
1653}
1654
1655static int
1656upgrade_set_callback(zfs_handle_t *zhp, void *data)
1657{
1658 upgrade_cbdata_t *cb = data;
1659 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
428870ff
BB		 1660 int needed_spa_version;
1661 int spa_version;
1662
1663 if (zfs_spa_version(zhp, &spa_version) < 0)
1664 return (-1);
1665
1666 needed_spa_version = zfs_spa_version_map(cb->cb_version);
1667
1668 if (needed_spa_version < 0)
1669 return (-1);
1670
1671 if (spa_version < needed_spa_version) {
1672 /* can't upgrade */
1673 (void) printf(gettext("%s: can not be "
1674 "upgraded; the pool version needs to first "
1675 "be upgraded\nto version %d\n\n"),
1676 zfs_get_name(zhp), needed_spa_version);
1677 cb->cb_numfailed++;
1678 return (0);
34dc7c2f
BB		 1679 }
1680
1681 /* upgrade */
1682 if (version < cb->cb_version) {
1683 char verstr[16];
1684 (void) snprintf(verstr, sizeof (verstr),
b8864a23 1685 "%llu", (u_longlong_t)cb->cb_version);
34dc7c2f
BB		 1686 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
1687 /*
1688 * If they did "zfs upgrade -a", then we could
1689 * be doing ioctls to different pools. We need
1690 * to log this history once to each pool.
1691 */
1692 verify(zpool_stage_history(g_zfs, history_str) == 0);
1693 }
1694 if (zfs_prop_set(zhp, "version", verstr) == 0)
1695 cb->cb_numupgraded++;
1696 else
1697 cb->cb_numfailed++;
1698 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
1699 } else if (version > cb->cb_version) {
1700 /* can't downgrade */
1701 (void) printf(gettext("%s: can not be downgraded; "
1702 "it is already at version %u\n"),
1703 zfs_get_name(zhp), version);
1704 cb->cb_numfailed++;
1705 } else {
1706 cb->cb_numsamegraded++;
1707 }
1708 return (0);
1709}
1710
1711/*
1712 * zfs upgrade
1713 * zfs upgrade -v
1714 * zfs upgrade [-r] [-V <version>] <-a | filesystem>
1715 */
1716static int
1717zfs_do_upgrade(int argc, char **argv)
1718{
34dc7c2f
BB		 1719 boolean_t all = B_FALSE;
1720 boolean_t showversions = B_FALSE;
1721 int ret;
1722 upgrade_cbdata_t cb = { 0 };
b8864a23 1723 signed char c;
b128c09f 1724 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
34dc7c2f
BB		 1725
1726 /* check options */
1727 while ((c = getopt(argc, argv, "rvV:a")) != -1) {
1728 switch (c) {
1729 case 'r':
b128c09f 1730 flags |= ZFS_ITER_RECURSE;
34dc7c2f
BB		 1731 break;
1732 case 'v':
1733 showversions = B_TRUE;
1734 break;
1735 case 'V':
1736 if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
1737 optarg, &cb.cb_version) != 0) {
1738 (void) fprintf(stderr,
1739 gettext("invalid version %s\n"), optarg);
1740 usage(B_FALSE);
1741 }
1742 break;
1743 case 'a':
1744 all = B_TRUE;
1745 break;
1746 case '?':
1747 default:
1748 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1749 optopt);
1750 usage(B_FALSE);
1751 }
1752 }
1753
1754 argc -= optind;
1755 argv += optind;
1756
b128c09f 1757 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
34dc7c2f 1758 usage(B_FALSE);
b128c09f
BB		 1759 if (showversions && (flags & ZFS_ITER_RECURSE || all ||
1760 cb.cb_version || argc))
34dc7c2f
BB		 1761 usage(B_FALSE);
1762 if ((all || argc) && (showversions))
1763 usage(B_FALSE);
1764 if (all && argc)
1765 usage(B_FALSE);
1766
1767 if (showversions) {
1768 /* Show info on available versions. */
1769 (void) printf(gettext("The following filesystem versions are "
1770 "supported:\n\n"));
1771 (void) printf(gettext("VER DESCRIPTION\n"));
1772 (void) printf("--- -----------------------------------------"
1773 "---------------\n");
1774 (void) printf(gettext(" 1 Initial ZFS filesystem version\n"));
1775 (void) printf(gettext(" 2 Enhanced directory entries\n"));
1776 (void) printf(gettext(" 3 Case insensitive and File system "
45d1cae3 1777 "unique identifier (FUID)\n"));
9babb374
BB		 1778 (void) printf(gettext(" 4 userquota, groupquota "
1779 "properties\n"));
428870ff 1780 (void) printf(gettext(" 5 System attributes\n"));
34dc7c2f 1781 (void) printf(gettext("\nFor more information on a particular "
428870ff
BB		 1782 "version, including supported releases,\n"));
1783 (void) printf("see the ZFS Administration Guide.\n\n");
34dc7c2f
BB		 1784 ret = 0;
1785 } else if (argc || all) {
1786 /* Upgrade filesystems */
1787 if (cb.cb_version == 0)
1788 cb.cb_version = ZPL_VERSION;
b128c09f 1789 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
9babb374 1790 NULL, NULL, 0, upgrade_set_callback, &cb);
34dc7c2f 1791 (void) printf(gettext("%llu filesystems upgraded\n"),
b8864a23 1792 (u_longlong_t)cb.cb_numupgraded);
34dc7c2f
BB		 1793 if (cb.cb_numsamegraded) {
1794 (void) printf(gettext("%llu filesystems already at "
1795 "this version\n"),
b8864a23 1796 (u_longlong_t)cb.cb_numsamegraded);
34dc7c2f
BB		 1797 }
1798 if (cb.cb_numfailed != 0)
1799 ret = 1;
1800 } else {
1801 /* List old-version filesytems */
1802 boolean_t found;
1803 (void) printf(gettext("This system is currently running "
1804 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
1805
b128c09f
BB		 1806 flags |= ZFS_ITER_RECURSE;
1807 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
9babb374 1808 NULL, NULL, 0, upgrade_list_callback, &cb);
34dc7c2f
BB		 1809
1810 found = cb.cb_foundone;
1811 cb.cb_foundone = B_FALSE;
1812 cb.cb_newer = B_TRUE;
1813
b128c09f 1814 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
9babb374 1815 NULL, NULL, 0, upgrade_list_callback, &cb);
34dc7c2f
BB		 1816
1817 if (!cb.cb_foundone && !found) {
1818 (void) printf(gettext("All filesystems are "
1819 "formatted with the current version.\n"));
1820 }
1821 }
1822
1823 return (ret);
1824}
1825
1826/*
9babb374
BB		 1827 * zfs userspace
1828 */
1829static int
1830userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
1831{
1832 zfs_userquota_prop_t *typep = arg;
1833 zfs_userquota_prop_t p = *typep;
1834 char *name = NULL;
1835 char *ug, *propname;
1836 char namebuf[32];
1837 char sizebuf[32];
1838
1839 if (domain == NULL || domain[0] == '\0') {
1840 if (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) {
1841 struct group *g = getgrgid(rid);
1842 if (g)
1843 name = g->gr_name;
1844 } else {
1845 struct passwd *p = getpwuid(rid);
1846 if (p)
1847 name = p->pw_name;
1848 }
1849 }
1850
1851 if (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA)
1852 ug = "group";
1853 else
1854 ug = "user";
1855
1856 if (p == ZFS_PROP_USERUSED || p == ZFS_PROP_GROUPUSED)
1857 propname = "used";
1858 else
1859 propname = "quota";
1860
1861 if (name == NULL) {
1862 (void) snprintf(namebuf, sizeof (namebuf),
1863 "%llu", (longlong_t)rid);
1864 name = namebuf;
1865 }
1866 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
1867
1868 (void) printf("%s %s %s%c%s %s\n", propname, ug, domain,
1869 domain[0] ? '-' : ' ', name, sizebuf);
1870
1871 return (0);
1872}
1873
1874static int
1875zfs_do_userspace(int argc, char **argv)
1876{
1877 zfs_handle_t *zhp;
1878 zfs_userquota_prop_t p;
1879 int error;
1880
1881 /*
1882 * Try the python version. If the execv fails, we'll continue
1883 * and do a simplistic implementation.
1884 */
1885 (void) execv(pypath, argv-1);
1886
1887 (void) printf("internal error: %s not found\n"
1888 "falling back on built-in implementation, "
1889 "some features will not work\n", pypath);
1890
1891 if ((zhp = zfs_open(g_zfs, argv[argc-1], ZFS_TYPE_DATASET)) == NULL)
1892 return (1);
1893
1894 (void) printf("PROP TYPE NAME VALUE\n");
1895
1896 for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
1897 error = zfs_userspace(zhp, p, userspace_cb, &p);
1898 if (error)
1899 break;
1900 }
1901 return (error);
1902}
1903
1904/*
1905 * list [-r][-d max] [-H] [-o property[,property]...] [-t type[,type]...]
34dc7c2f
BB		 1906 * [-s property [-s property]...] [-S property [-S property]...]
1907 * <dataset> ...
1908 *
428870ff
BB		 1909 * -r Recurse over all children
1910 * -d Limit recursion by depth.
1911 * -H Scripted mode; elide headers and separate columns by tabs
1912 * -o Control which fields to display.
1913 * -t Control which object types to display.
34dc7c2f
BB		 1914 * -s Specify sort columns, descending order.
1915 * -S Specify sort columns, ascending order.
1916 *
1917 * When given no arguments, lists all filesystems in the system.
1918 * Otherwise, list the specified datasets, optionally recursing down them if
1919 * '-r' is specified.
1920 */
1921typedef struct list_cbdata {
1922 boolean_t cb_first;
1923 boolean_t cb_scripted;
1924 zprop_list_t *cb_proplist;
1925} list_cbdata_t;
1926
1927/*
1928 * Given a list of columns to display, output appropriate headers for each one.
1929 */
1930static void
1931print_header(zprop_list_t *pl)
1932{
1933 char headerbuf[ZFS_MAXPROPLEN];
1934 const char *header;
1935 int i;
1936 boolean_t first = B_TRUE;
1937 boolean_t right_justify;
1938
1939 for (; pl != NULL; pl = pl->pl_next) {
1940 if (!first) {
1941 (void) printf(" ");
1942 } else {
1943 first = B_FALSE;
1944 }
1945
1946 right_justify = B_FALSE;
1947 if (pl->pl_prop != ZPROP_INVAL) {
1948 header = zfs_prop_column_name(pl->pl_prop);
1949 right_justify = zfs_prop_align_right(pl->pl_prop);
1950 } else {
1951 for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
1952 headerbuf[i] = toupper(pl->pl_user_prop[i]);
1953 headerbuf[i] = '\0';
1954 header = headerbuf;
1955 }
1956
1957 if (pl->pl_next == NULL && !right_justify)
1958 (void) printf("%s", header);
1959 else if (right_justify)
b8864a23 1960 (void) printf("%*s", (int)pl->pl_width, header);
34dc7c2f 1961 else
b8864a23 1962 (void) printf("%-*s", (int)pl->pl_width, header);
34dc7c2f
BB		 1963 }
1964
1965 (void) printf("\n");
1966}
1967
1968/*
1969 * Given a dataset and a list of fields, print out all the properties according
1970 * to the described layout.
1971 */
1972static void
1973print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted)
1974{
1975 boolean_t first = B_TRUE;
1976 char property[ZFS_MAXPROPLEN];
1977 nvlist_t *userprops = zfs_get_user_props(zhp);
1978 nvlist_t *propval;
1979 char *propstr;
1980 boolean_t right_justify;
1981 int width;
1982
1983 for (; pl != NULL; pl = pl->pl_next) {
1984 if (!first) {
1985 if (scripted)
1986 (void) printf("\t");
1987 else
1988 (void) printf(" ");
1989 } else {
1990 first = B_FALSE;
1991 }
1992
34dc7c2f
BB		 1993 if (pl->pl_prop != ZPROP_INVAL) {
1994 if (zfs_prop_get(zhp, pl->pl_prop, property,
1995 sizeof (property), NULL, NULL, 0, B_FALSE) != 0)
1996 propstr = "-";
1997 else
1998 propstr = property;
1999
2000 right_justify = zfs_prop_align_right(pl->pl_prop);
9babb374
BB		 2001 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
2002 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
2003 property, sizeof (property), B_FALSE) != 0)
2004 propstr = "-";
2005 else
2006 propstr = property;
2007 right_justify = B_TRUE;
34dc7c2f
BB		 2008 } else {
2009 if (nvlist_lookup_nvlist(userprops,
2010 pl->pl_user_prop, &propval) != 0)
2011 propstr = "-";
2012 else
2013 verify(nvlist_lookup_string(propval,
2014 ZPROP_VALUE, &propstr) == 0);
9babb374 2015 right_justify = B_FALSE;
34dc7c2f
BB		 2016 }
2017
2018 width = pl->pl_width;
2019
2020 /*
2021 * If this is being called in scripted mode, or if this is the
2022 * last column and it is left-justified, don't include a width
2023 * format specifier.
2024 */
2025 if (scripted || (pl->pl_next == NULL && !right_justify))
2026 (void) printf("%s", propstr);
2027 else if (right_justify)
2028 (void) printf("%*s", width, propstr);
2029 else
2030 (void) printf("%-*s", width, propstr);
2031 }
2032
2033 (void) printf("\n");
2034}
2035
2036/*
2037 * Generic callback function to list a dataset or snapshot.
2038 */
2039static int
2040list_callback(zfs_handle_t *zhp, void *data)
2041{
2042 list_cbdata_t *cbp = data;
2043
2044 if (cbp->cb_first) {
2045 if (!cbp->cb_scripted)
2046 print_header(cbp->cb_proplist);
2047 cbp->cb_first = B_FALSE;
2048 }
2049
2050 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted);
2051
2052 return (0);
2053}
2054
2055static int
2056zfs_do_list(int argc, char **argv)
2057{
2058 int c;
34dc7c2f
BB		 2059 boolean_t scripted = B_FALSE;
2060 static char default_fields[] =
2061 "name,used,available,referenced,mountpoint";
d164b209 2062 int types = ZFS_TYPE_DATASET;
b128c09f 2063 boolean_t types_specified = B_FALSE;
34dc7c2f 2064 char *fields = NULL;
34dc7c2f
BB		 2065 list_cbdata_t cb = { 0 };
2066 char *value;
9babb374 2067 int limit = 0;
34dc7c2f 2068 int ret;
34dc7c2f 2069 zfs_sort_column_t *sortcol = NULL;
b128c09f 2070 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
34dc7c2f
BB		 2071
2072 /* check options */
9babb374 2073 while ((c = getopt(argc, argv, ":d:o:rt:Hs:S:")) != -1) {
34dc7c2f
BB		 2074 switch (c) {
2075 case 'o':
2076 fields = optarg;
2077 break;
9babb374
BB		 2078 case 'd':
2079 limit = parse_depth(optarg, &flags);
2080 break;
34dc7c2f 2081 case 'r':
b128c09f 2082 flags |= ZFS_ITER_RECURSE;
34dc7c2f
BB		 2083 break;
2084 case 'H':
2085 scripted = B_TRUE;
2086 break;
2087 case 's':
2088 if (zfs_add_sort_column(&sortcol, optarg,
2089 B_FALSE) != 0) {
2090 (void) fprintf(stderr,
2091 gettext("invalid property '%s'\n"), optarg);
2092 usage(B_FALSE);
2093 }
2094 break;
2095 case 'S':
2096 if (zfs_add_sort_column(&sortcol, optarg,
2097 B_TRUE) != 0) {
2098 (void) fprintf(stderr,
2099 gettext("invalid property '%s'\n"), optarg);
2100 usage(B_FALSE);
2101 }
2102 break;
2103 case 't':
2104 types = 0;
b128c09f
BB		 2105 types_specified = B_TRUE;
2106 flags &= ~ZFS_ITER_PROP_LISTSNAPS;
34dc7c2f 2107 while (*optarg != '\0') {
b128c09f
BB		 2108 static char *type_subopts[] = { "filesystem",
2109 "volume", "snapshot", "all", NULL };
2110
34dc7c2f
BB		 2111 switch (getsubopt(&optarg, type_subopts,
2112 &value)) {
2113 case 0:
2114 types |= ZFS_TYPE_FILESYSTEM;
2115 break;
2116 case 1:
2117 types |= ZFS_TYPE_VOLUME;
2118 break;
2119 case 2:
2120 types |= ZFS_TYPE_SNAPSHOT;
2121 break;
b128c09f
BB		 2122 case 3:
2123 types = ZFS_TYPE_DATASET;
2124 break;
2125
34dc7c2f
BB		 2126 default:
2127 (void) fprintf(stderr,
2128 gettext("invalid type '%s'\n"),
2129 value);
2130 usage(B_FALSE);
2131 }
2132 }
2133 break;
2134 case ':':
2135 (void) fprintf(stderr, gettext("missing argument for "
2136 "'%c' option\n"), optopt);
2137 usage(B_FALSE);
2138 break;
2139 case '?':
2140 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2141 optopt);
2142 usage(B_FALSE);
2143 }
2144 }
2145
2146 argc -= optind;
2147 argv += optind;
2148
2149 if (fields == NULL)
b128c09f
BB		 2150 fields = default_fields;
2151
2152 /*
2153 * If "-o space" and no types were specified, don't display snapshots.
2154 */
2155 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
2156 types &= ~ZFS_TYPE_SNAPSHOT;
34dc7c2f
BB		 2157
2158 /*
2159 * If the user specifies '-o all', the zprop_get_list() doesn't
2160 * normally include the name of the dataset. For 'zfs list', we always
2161 * want this property to be first.
2162 */
2163 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
2164 != 0)
2165 usage(B_FALSE);
2166
2167 cb.cb_scripted = scripted;
2168 cb.cb_first = B_TRUE;
2169
b128c09f 2170 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
9babb374 2171 limit, list_callback, &cb);
34dc7c2f
BB		 2172
2173 zprop_free_list(cb.cb_proplist);
2174 zfs_free_sort_columns(sortcol);
2175
2176 if (ret == 0 && cb.cb_first && !cb.cb_scripted)
2177 (void) printf(gettext("no datasets available\n"));
2178
2179 return (ret);
2180}
2181
2182/*
2183 * zfs rename <fs | snap | vol> <fs | snap | vol>
2184 * zfs rename -p <fs | vol> <fs | vol>
2185 * zfs rename -r <snap> <snap>
2186 *
2187 * Renames the given dataset to another of the same type.
2188 *
2189 * The '-p' flag creates all the non-existing ancestors of the target first.
2190 */
2191/* ARGSUSED */
2192static int
2193zfs_do_rename(int argc, char **argv)
2194{
2195 zfs_handle_t *zhp;
2196 int c;
2197 int ret;
2198 boolean_t recurse = B_FALSE;
2199 boolean_t parents = B_FALSE;
2200
2201 /* check options */
2202 while ((c = getopt(argc, argv, "pr")) != -1) {
2203 switch (c) {
2204 case 'p':
2205 parents = B_TRUE;
2206 break;
2207 case 'r':
2208 recurse = B_TRUE;
2209 break;
2210 case '?':
2211 default:
2212 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2213 optopt);
2214 usage(B_FALSE);
2215 }
2216 }
2217
2218 argc -= optind;
2219 argv += optind;
2220
2221 /* check number of arguments */
2222 if (argc < 1) {
2223 (void) fprintf(stderr, gettext("missing source dataset "
2224 "argument\n"));
2225 usage(B_FALSE);
2226 }
2227 if (argc < 2) {
2228 (void) fprintf(stderr, gettext("missing target dataset "
2229 "argument\n"));
2230 usage(B_FALSE);
2231 }
2232 if (argc > 2) {
2233 (void) fprintf(stderr, gettext("too many arguments\n"));
2234 usage(B_FALSE);
2235 }
2236
2237 if (recurse && parents) {
2238 (void) fprintf(stderr, gettext("-p and -r options are mutually "
2239 "exclusive\n"));
2240 usage(B_FALSE);
2241 }
2242
2243 if (recurse && strchr(argv[0], '@') == 0) {
2244 (void) fprintf(stderr, gettext("source dataset for recursive "
2245 "rename must be a snapshot\n"));
2246 usage(B_FALSE);
2247 }
2248
2249 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM |
2250 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL)
2251 return (1);
2252
2253 /* If we were asked and the name looks good, try to create ancestors. */
2254 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
2255 zfs_create_ancestors(g_zfs, argv[1]) != 0) {
2256 zfs_close(zhp);
2257 return (1);
2258 }
2259
2260 ret = (zfs_rename(zhp, argv[1], recurse) != 0);
2261
2262 zfs_close(zhp);
2263 return (ret);
2264}
2265
2266/*
2267 * zfs promote <fs>
2268 *
2269 * Promotes the given clone fs to be the parent
2270 */
2271/* ARGSUSED */
2272static int
2273zfs_do_promote(int argc, char **argv)
2274{
2275 zfs_handle_t *zhp;
2276 int ret;
2277
2278 /* check options */
2279 if (argc > 1 && argv[1][0] == '-') {
2280 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2281 argv[1][1]);
2282 usage(B_FALSE);
2283 }
2284
2285 /* check number of arguments */
2286 if (argc < 2) {
2287 (void) fprintf(stderr, gettext("missing clone filesystem"
2288 " argument\n"));
2289 usage(B_FALSE);
2290 }
2291 if (argc > 2) {
2292 (void) fprintf(stderr, gettext("too many arguments\n"));
2293 usage(B_FALSE);
2294 }
2295
2296 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
2297 if (zhp == NULL)
2298 return (1);
2299
2300 ret = (zfs_promote(zhp) != 0);
2301
2302
2303 zfs_close(zhp);
2304 return (ret);
2305}
2306
2307/*
2308 * zfs rollback [-rRf] <snapshot>
2309 *
428870ff
BB		 2310 * -r Delete any intervening snapshots before doing rollback
2311 * -R Delete any snapshots and their clones
2312 * -f ignored for backwards compatability
34dc7c2f
BB		 2313 *
2314 * Given a filesystem, rollback to a specific snapshot, discarding any changes
2315 * since then and making it the active dataset. If more recent snapshots exist,
2316 * the command will complain unless the '-r' flag is given.
2317 */
2318typedef struct rollback_cbdata {
2319 uint64_t cb_create;
2320 boolean_t cb_first;
2321 int cb_doclones;
2322 char *cb_target;
2323 int cb_error;
2324 boolean_t cb_recurse;
2325 boolean_t cb_dependent;
2326} rollback_cbdata_t;
2327
2328/*
2329 * Report any snapshots more recent than the one specified. Used when '-r' is
2330 * not specified. We reuse this same callback for the snapshot dependents - if
2331 * 'cb_dependent' is set, then this is a dependent and we should report it
2332 * without checking the transaction group.
2333 */
2334static int
2335rollback_check(zfs_handle_t *zhp, void *data)
2336{
2337 rollback_cbdata_t *cbp = data;
2338
2339 if (cbp->cb_doclones) {
2340 zfs_close(zhp);
2341 return (0);
2342 }
2343
2344 if (!cbp->cb_dependent) {
2345 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 &&
2346 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT &&
2347 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) >
2348 cbp->cb_create) {
2349
2350 if (cbp->cb_first && !cbp->cb_recurse) {
2351 (void) fprintf(stderr, gettext("cannot "
2352 "rollback to '%s': more recent snapshots "
2353 "exist\n"),
2354 cbp->cb_target);
2355 (void) fprintf(stderr, gettext("use '-r' to "
2356 "force deletion of the following "
2357 "snapshots:\n"));
2358 cbp->cb_first = 0;
2359 cbp->cb_error = 1;
2360 }
2361
2362 if (cbp->cb_recurse) {
2363 cbp->cb_dependent = B_TRUE;
2364 if (zfs_iter_dependents(zhp, B_TRUE,
2365 rollback_check, cbp) != 0) {
2366 zfs_close(zhp);
2367 return (-1);
2368 }
2369 cbp->cb_dependent = B_FALSE;
2370 } else {
2371 (void) fprintf(stderr, "%s\n",
2372 zfs_get_name(zhp));
2373 }
2374 }
2375 } else {
2376 if (cbp->cb_first && cbp->cb_recurse) {
2377 (void) fprintf(stderr, gettext("cannot rollback to "
2378 "'%s': clones of previous snapshots exist\n"),
2379 cbp->cb_target);
2380 (void) fprintf(stderr, gettext("use '-R' to "
2381 "force deletion of the following clones and "
2382 "dependents:\n"));
2383 cbp->cb_first = 0;
2384 cbp->cb_error = 1;
2385 }
2386
2387 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
2388 }
2389
2390 zfs_close(zhp);
2391 return (0);
2392}
2393
2394static int
2395zfs_do_rollback(int argc, char **argv)
2396{
2397 int ret;
2398 int c;
2399 boolean_t force = B_FALSE;
2400 rollback_cbdata_t cb = { 0 };
2401 zfs_handle_t *zhp, *snap;
2402 char parentname[ZFS_MAXNAMELEN];
2403 char *delim;
2404
2405 /* check options */
2406 while ((c = getopt(argc, argv, "rRf")) != -1) {
2407 switch (c) {
2408 case 'r':
2409 cb.cb_recurse = 1;
2410 break;
2411 case 'R':
2412 cb.cb_recurse = 1;
2413 cb.cb_doclones = 1;
2414 break;
2415 case 'f':
2416 force = B_TRUE;
2417 break;
2418 case '?':
2419 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2420 optopt);
2421 usage(B_FALSE);
2422 }
2423 }
2424
2425 argc -= optind;
2426 argv += optind;
2427
2428 /* check number of arguments */
2429 if (argc < 1) {
2430 (void) fprintf(stderr, gettext("missing dataset argument\n"));
2431 usage(B_FALSE);
2432 }
2433 if (argc > 1) {
2434 (void) fprintf(stderr, gettext("too many arguments\n"));
2435 usage(B_FALSE);
2436 }
2437
2438 /* open the snapshot */
2439 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
2440 return (1);
2441
2442 /* open the parent dataset */
2443 (void) strlcpy(parentname, argv[0], sizeof (parentname));
2444 verify((delim = strrchr(parentname, '@')) != NULL);
2445 *delim = '\0';
2446 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
2447 zfs_close(snap);
2448 return (1);
2449 }
2450
2451 /*
2452 * Check for more recent snapshots and/or clones based on the presence
2453 * of '-r' and '-R'.
2454 */
2455 cb.cb_target = argv[0];
2456 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
2457 cb.cb_first = B_TRUE;
2458 cb.cb_error = 0;
2459 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0)
2460 goto out;
2461
2462 if ((ret = cb.cb_error) != 0)
2463 goto out;
2464
2465 /*
2466 * Rollback parent to the given snapshot.
2467 */
2468 ret = zfs_rollback(zhp, snap, force);
2469
2470out:
2471 zfs_close(snap);
2472 zfs_close(zhp);
2473
2474 if (ret == 0)
2475 return (0);
2476 else
2477 return (1);
2478}
2479
2480/*
2481 * zfs set property=value { fs | snap | vol } ...
2482 *
2483 * Sets the given property for all datasets specified on the command line.
2484 */
2485typedef struct set_cbdata {
2486 char *cb_propname;
2487 char *cb_value;
2488} set_cbdata_t;
2489
2490static int
2491set_callback(zfs_handle_t *zhp, void *data)
2492{
2493 set_cbdata_t *cbp = data;
2494
2495 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) {
2496 switch (libzfs_errno(g_zfs)) {
2497 case EZFS_MOUNTFAILED:
2498 (void) fprintf(stderr, gettext("property may be set "
2499 "but unable to remount filesystem\n"));
2500 break;
2501 case EZFS_SHARENFSFAILED:
2502 (void) fprintf(stderr, gettext("property may be set "
2503 "but unable to reshare filesystem\n"));
2504 break;
2505 }
2506 return (1);
2507 }
2508 return (0);
2509}
2510
2511static int
2512zfs_do_set(int argc, char **argv)
2513{
2514 set_cbdata_t cb;
2515 int ret;
2516
2517 /* check for options */
2518 if (argc > 1 && argv[1][0] == '-') {
2519 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2520 argv[1][1]);
2521 usage(B_FALSE);
2522 }
2523
2524 /* check number of arguments */
2525 if (argc < 2) {
2526 (void) fprintf(stderr, gettext("missing property=value "
2527 "argument\n"));
2528 usage(B_FALSE);
2529 }
2530 if (argc < 3) {
2531 (void) fprintf(stderr, gettext("missing dataset name\n"));
2532 usage(B_FALSE);
2533 }
2534
2535 /* validate property=value argument */
2536 cb.cb_propname = argv[1];
b128c09f
BB		 2537 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) ||
2538 (cb.cb_value[1] == '\0')) {
34dc7c2f
BB		 2539 (void) fprintf(stderr, gettext("missing value in "
2540 "property=value argument\n"));
2541 usage(B_FALSE);
2542 }
2543
2544 *cb.cb_value = '\0';
2545 cb.cb_value++;
2546
2547 if (*cb.cb_propname == '\0') {
2548 (void) fprintf(stderr,
2549 gettext("missing property in property=value argument\n"));
2550 usage(B_FALSE);
2551 }
2552
b8864a23 2553 ret = zfs_for_each(argc - 2, argv + 2, 0,
9babb374 2554 ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, &cb);
34dc7c2f
BB		 2555
2556 return (ret);
2557}
2558
2559/*
b128c09f 2560 * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
34dc7c2f
BB		 2561 *
2562 * Creates a snapshot with the given name. While functionally equivalent to
2563 * 'zfs create', it is a separate command to differentiate intent.
2564 */
2565static int
2566zfs_do_snapshot(int argc, char **argv)
2567{
2568 boolean_t recursive = B_FALSE;
2569 int ret;
b8864a23 2570 signed char c;
b128c09f
BB		 2571 nvlist_t *props;
2572
428870ff
BB		 2573 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2574 nomem();
34dc7c2f
BB		 2575
2576 /* check options */
b128c09f 2577 while ((c = getopt(argc, argv, "ro:")) != -1) {
34dc7c2f 2578 switch (c) {
b128c09f
BB		 2579 case 'o':
2580 if (parseprop(props))
2581 return (1);
2582 break;
34dc7c2f
BB		 2583 case 'r':
2584 recursive = B_TRUE;
2585 break;
2586 case '?':
2587 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2588 optopt);
b128c09f 2589 goto usage;
34dc7c2f
BB		 2590 }
2591 }
2592
2593 argc -= optind;
2594 argv += optind;
2595
2596 /* check number of arguments */
2597 if (argc < 1) {
2598 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
b128c09f 2599 goto usage;
34dc7c2f
BB		 2600 }
2601 if (argc > 1) {
2602 (void) fprintf(stderr, gettext("too many arguments\n"));
b128c09f 2603 goto usage;
34dc7c2f
BB		 2604 }
2605
b128c09f
BB		 2606 ret = zfs_snapshot(g_zfs, argv[0], recursive, props);
2607 nvlist_free(props);
34dc7c2f
BB		 2608 if (ret && recursive)
2609 (void) fprintf(stderr, gettext("no snapshots were created\n"));
2610 return (ret != 0);
b128c09f
BB		 2611
2612usage:
2613 nvlist_free(props);
2614 usage(B_FALSE);
2615 return (-1);
34dc7c2f
BB		 2616}
2617
2618/*
428870ff
BB		 2619 * zfs send [-vDp] -R [-i|-I <@snap>] <fs@snap>
2620 * zfs send [-vDp] [-i|-I <@snap>] <fs@snap>
34dc7c2f
BB		 2621 *
2622 * Send a backup stream to stdout.
2623 */
2624static int
2625zfs_do_send(int argc, char **argv)
2626{
2627 char *fromname = NULL;
2628 char *toname = NULL;
2629 char *cp;
2630 zfs_handle_t *zhp;
428870ff 2631 sendflags_t flags = { 0 };
34dc7c2f 2632 int c, err;
428870ff
BB		 2633 nvlist_t *dbgnv;
2634 boolean_t extraverbose = B_FALSE;
34dc7c2f
BB		 2635
2636 /* check options */
428870ff 2637 while ((c = getopt(argc, argv, ":i:I:RDpv")) != -1) {
34dc7c2f
BB		 2638 switch (c) {
2639 case 'i':
2640 if (fromname)
2641 usage(B_FALSE);
2642 fromname = optarg;
2643 break;
2644 case 'I':
2645 if (fromname)
2646 usage(B_FALSE);
2647 fromname = optarg;
428870ff 2648 flags.doall = B_TRUE;
34dc7c2f
BB		 2649 break;
2650 case 'R':
428870ff
BB		 2651 flags.replicate = B_TRUE;
2652 break;
2653 case 'p':
2654 flags.props = B_TRUE;
34dc7c2f
BB		 2655 break;
2656 case 'v':
428870ff
BB		 2657 if (flags.verbose)
2658 extraverbose = B_TRUE;
2659 flags.verbose = B_TRUE;
2660 break;
2661 case 'D':
2662 flags.dedup = B_TRUE;
34dc7c2f
BB		 2663 break;
2664 case ':':
2665 (void) fprintf(stderr, gettext("missing argument for "
2666 "'%c' option\n"), optopt);
2667 usage(B_FALSE);
2668 break;
2669 case '?':
2670 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2671 optopt);
2672 usage(B_FALSE);
2673 }
2674 }
2675
2676 argc -= optind;
2677 argv += optind;
2678
2679 /* check number of arguments */
2680 if (argc < 1) {
2681 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
2682 usage(B_FALSE);
2683 }
2684 if (argc > 1) {
2685 (void) fprintf(stderr, gettext("too many arguments\n"));
2686 usage(B_FALSE);
2687 }
2688
2689 if (isatty(STDOUT_FILENO)) {
2690 (void) fprintf(stderr,
2691 gettext("Error: Stream can not be written to a terminal.\n"
2692 "You must redirect standard output.\n"));
2693 return (1);
2694 }
2695
2696 cp = strchr(argv[0], '@');
2697 if (cp == NULL) {
2698 (void) fprintf(stderr,
2699 gettext("argument must be a snapshot\n"));
2700 usage(B_FALSE);
2701 }
2702 *cp = '\0';
2703 toname = cp + 1;
2704 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
2705 if (zhp == NULL)
2706 return (1);
2707
2708 /*
2709 * If they specified the full path to the snapshot, chop off
2710 * everything except the short name of the snapshot, but special
2711 * case if they specify the origin.
2712 */
2713 if (fromname && (cp = strchr(fromname, '@')) != NULL) {
2714 char origin[ZFS_MAXNAMELEN];
2715 zprop_source_t src;
2716
2717 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
2718 origin, sizeof (origin), &src, NULL, 0, B_FALSE);
2719
2720 if (strcmp(origin, fromname) == 0) {
2721 fromname = NULL;
428870ff 2722 flags.fromorigin = B_TRUE;
34dc7c2f
BB		 2723 } else {
2724 *cp = '\0';
2725 if (cp != fromname && strcmp(argv[0], fromname)) {
2726 (void) fprintf(stderr,
2727 gettext("incremental source must be "
2728 "in same filesystem\n"));
2729 usage(B_FALSE);
2730 }
2731 fromname = cp + 1;
2732 if (strchr(fromname, '@') || strchr(fromname, '/')) {
2733 (void) fprintf(stderr,
2734 gettext("invalid incremental source\n"));
2735 usage(B_FALSE);
2736 }
2737 }
2738 }
2739
428870ff
BB		 2740 if (flags.replicate && fromname == NULL)
2741 flags.doall = B_TRUE;
2742
2743 err = zfs_send(zhp, fromname, toname, flags, STDOUT_FILENO, NULL, 0,
2744 extraverbose ? &dbgnv : NULL);
34dc7c2f 2745
428870ff
BB		 2746 if (extraverbose) {
2747 /*
2748 * dump_nvlist prints to stdout, but that's been
2749 * redirected to a file. Make it print to stderr
2750 * instead.
2751 */
2752 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
2753 dump_nvlist(dbgnv, 0);
2754 nvlist_free(dbgnv);
2755 }
34dc7c2f
BB		 2756 zfs_close(zhp);
2757
2758 return (err != 0);
2759}
2760
2761/*
428870ff 2762 * zfs receive [-vnFu] [-d | -e] <fs@snap>
34dc7c2f
BB		 2763 *
2764 * Restore a backup stream from stdin.
2765 */
2766static int
2767zfs_do_receive(int argc, char **argv)
2768{
2769 int c, err;
428870ff 2770 recvflags_t flags = { 0 };
34dc7c2f 2771
34dc7c2f 2772 /* check options */
428870ff 2773 while ((c = getopt(argc, argv, ":denuvF")) != -1) {
34dc7c2f
BB		 2774 switch (c) {
2775 case 'd':
2776 flags.isprefix = B_TRUE;
2777 break;
428870ff
BB		 2778 case 'e':
2779 flags.isprefix = B_TRUE;
2780 flags.istail = B_TRUE;
2781 break;
34dc7c2f
BB		 2782 case 'n':
2783 flags.dryrun = B_TRUE;
2784 break;
d164b209
BB		 2785 case 'u':
2786 flags.nomount = B_TRUE;
2787 break;
34dc7c2f
BB		 2788 case 'v':
2789 flags.verbose = B_TRUE;
2790 break;
2791 case 'F':
2792 flags.force = B_TRUE;
2793 break;
2794 case ':':
2795 (void) fprintf(stderr, gettext("missing argument for "
2796 "'%c' option\n"), optopt);
2797 usage(B_FALSE);
2798 break;
2799 case '?':
2800 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2801 optopt);
2802 usage(B_FALSE);
2803 }
2804 }
2805
2806 argc -= optind;
2807 argv += optind;
2808
2809 /* check number of arguments */
2810 if (argc < 1) {
2811 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
2812 usage(B_FALSE);
2813 }
2814 if (argc > 1) {
2815 (void) fprintf(stderr, gettext("too many arguments\n"));
2816 usage(B_FALSE);
2817 }
2818
2819 if (isatty(STDIN_FILENO)) {
2820 (void) fprintf(stderr,
2821 gettext("Error: Backup stream can not be read "
2822 "from a terminal.\n"
2823 "You must redirect standard input.\n"));
2824 return (1);
2825 }
2826
2827 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL);
2828
2829 return (err != 0);
2830}
2831
45d1cae3
BB		 2832static int
2833zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
2834{
2835 int errors = 0;
2836 int i;
2837 const char *tag;
2838 boolean_t recursive = B_FALSE;
428870ff
BB		 2839 boolean_t temphold = B_FALSE;
2840 const char *opts = holding ? "rt" : "r";
45d1cae3 2841 int c;
45d1cae3
BB		 2842
2843 /* check options */
428870ff 2844 while ((c = getopt(argc, argv, opts)) != -1) {
45d1cae3
BB		 2845 switch (c) {
2846 case 'r':
2847 recursive = B_TRUE;
2848 break;
428870ff
BB		 2849 case 't':
2850 temphold = B_TRUE;
2851 break;
45d1cae3
BB		 2852 case '?':
2853 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2854 optopt);
2855 usage(B_FALSE);
2856 }
2857 }
2858
2859 argc -= optind;
2860 argv += optind;
2861
2862 /* check number of arguments */
2863 if (argc < 2)
2864 usage(B_FALSE);
2865
2866 tag = argv[0];
2867 --argc;
2868 ++argv;
2869
428870ff
BB		 2870 if (holding && tag[0] == '.') {
2871 /* tags starting with '.' are reserved for libzfs */
2872 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
2873 usage(B_FALSE);
45d1cae3
BB		 2874 }
2875
2876 for (i = 0; i < argc; ++i) {
2877 zfs_handle_t *zhp;
2878 char parent[ZFS_MAXNAMELEN];
2879 const char *delim;
2880 char *path = argv[i];
2881
2882 delim = strchr(path, '@');
2883 if (delim == NULL) {
2884 (void) fprintf(stderr,
2885 gettext("'%s' is not a snapshot\n"), path);
2886 ++errors;
2887 continue;
2888 }
2889 (void) strncpy(parent, path, delim - path);
2890 parent[delim - path] = '\0';
2891
2892 zhp = zfs_open(g_zfs, parent,
2893 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
2894 if (zhp == NULL) {
2895 ++errors;
2896 continue;
2897 }
428870ff
BB		 2898 if (holding) {
2899 if (zfs_hold(zhp, delim+1, tag, recursive,
572e2857 2900 temphold, B_FALSE, -1, 0, 0) != 0)
428870ff
BB		 2901 ++errors;
2902 } else {
2903 if (zfs_release(zhp, delim+1, tag, recursive) != 0)
2904 ++errors;
2905 }
45d1cae3
BB		 2906 zfs_close(zhp);
2907 }
2908
2909 return (errors != 0);
2910}
2911
2912/*
428870ff 2913 * zfs hold [-r] [-t] <tag> <snap> ...
45d1cae3 2914 *
428870ff
BB		 2915 * -r Recursively hold
2916 * -t Temporary hold (hidden option)
45d1cae3
BB		 2917 *
2918 * Apply a user-hold with the given tag to the list of snapshots.
2919 */
2920static int
2921zfs_do_hold(int argc, char **argv)
2922{
2923 return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
2924}
2925
2926/*
2927 * zfs release [-r] <tag> <snap> ...
2928 *
428870ff 2929 * -r Recursively release
45d1cae3
BB		 2930 *
2931 * Release a user-hold with the given tag from the list of snapshots.
2932 */
2933static int
2934zfs_do_release(int argc, char **argv)
2935{
2936 return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
2937}
2938
34dc7c2f
BB		 2939#define CHECK_SPINNER 30
2940#define SPINNER_TIME 3 /* seconds */
2941#define MOUNT_TIME 5 /* seconds */
2942
2943static int
2944get_one_dataset(zfs_handle_t *zhp, void *data)
2945{
428870ff 2946 static char *spin[] = { "-", "\\", "|", "/" };
34dc7c2f
BB		 2947 static int spinval = 0;
2948 static int spincheck = 0;
2949 static time_t last_spin_time = (time_t)0;
572e2857 2950 get_all_cb_t *cbp = data;
34dc7c2f
BB		 2951 zfs_type_t type = zfs_get_type(zhp);
2952
2953 if (cbp->cb_verbose) {
2954 if (--spincheck < 0) {
2955 time_t now = time(NULL);
2956 if (last_spin_time + SPINNER_TIME < now) {
428870ff 2957 update_progress(spin[spinval++ % 4]);
34dc7c2f
BB		 2958 last_spin_time = now;
2959 }
2960 spincheck = CHECK_SPINNER;
2961 }
2962 }
2963
2964 /*
2965 * Interate over any nested datasets.
2966 */
572e2857 2967 if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
34dc7c2f
BB		 2968 zfs_close(zhp);
2969 return (1);
2970 }
2971
2972 /*
2973 * Skip any datasets whose type does not match.
2974 */
572e2857 2975 if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
34dc7c2f
BB		 2976 zfs_close(zhp);
2977 return (0);
2978 }
572e2857
BB		 2979 libzfs_add_handle(cbp, zhp);
2980 assert(cbp->cb_used <= cbp->cb_alloc);
34dc7c2f
BB		 2981
2982 return (0);
2983}
2984
2985static void
572e2857 2986get_all_datasets(zfs_handle_t ***dslist, size_t *count, boolean_t verbose)
34dc7c2f 2987{
572e2857 2988 get_all_cb_t cb = { 0 };
34dc7c2f 2989 cb.cb_verbose = verbose;
572e2857 2990 cb.cb_getone = get_one_dataset;
34dc7c2f 2991
428870ff
BB		 2992 if (verbose)
2993 set_progress_header(gettext("Reading ZFS config"));
34dc7c2f
BB		 2994 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
2995
2996 *dslist = cb.cb_handles;
2997 *count = cb.cb_used;
2998
428870ff
BB		 2999 if (verbose)
3000 finish_progress(gettext("done."));
34dc7c2f
BB		 3001}
3002
34dc7c2f
BB		 3003/*
3004 * Generic callback for sharing or mounting filesystems. Because the code is so
3005 * similar, we have a common function with an extra parameter to determine which
3006 * mode we are using.
3007 */
3008#define OP_SHARE 0x1
3009#define OP_MOUNT 0x2
3010
3011/*
3012 * Share or mount a dataset.
3013 */
3014static int
3015share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
3016 boolean_t explicit, const char *options)
3017{
3018 char mountpoint[ZFS_MAXPROPLEN];
3019 char shareopts[ZFS_MAXPROPLEN];
3020 char smbshareopts[ZFS_MAXPROPLEN];
3021 const char *cmdname = op == OP_SHARE ? "share" : "mount";
3022 struct mnttab mnt;
3023 uint64_t zoned, canmount;
34dc7c2f
BB		 3024 boolean_t shared_nfs, shared_smb;
3025
572e2857 3026 assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
34dc7c2f 3027
572e2857
BB		 3028 /*
3029 * Check to make sure we can mount/share this dataset. If we
3030 * are in the global zone and the filesystem is exported to a
3031 * local zone, or if we are in a local zone and the
3032 * filesystem is not exported, then it is an error.
3033 */
3034 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
34dc7c2f 3035
572e2857
BB		 3036 if (zoned && getzoneid() == GLOBAL_ZONEID) {
3037 if (!explicit)
3038 return (0);
34dc7c2f 3039
572e2857
BB		 3040 (void) fprintf(stderr, gettext("cannot %s '%s': "
3041 "dataset is exported to a local zone\n"), cmdname,
3042 zfs_get_name(zhp));
3043 return (1);
34dc7c2f 3044
572e2857
BB		 3045 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
3046 if (!explicit)
3047 return (0);
34dc7c2f 3048
572e2857
BB		 3049 (void) fprintf(stderr, gettext("cannot %s '%s': "
3050 "permission denied\n"), cmdname,
3051 zfs_get_name(zhp));
3052 return (1);
3053 }
34dc7c2f 3054
572e2857
BB		 3055 /*
3056 * Ignore any filesystems which don't apply to us. This
3057 * includes those with a legacy mountpoint, or those with
3058 * legacy share options.
3059 */
3060 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
3061 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
3062 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
3063 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
3064 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
3065 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
3066
3067 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
3068 strcmp(smbshareopts, "off") == 0) {
3069 if (!explicit)
3070 return (0);
34dc7c2f 3071
572e2857
BB		 3072 (void) fprintf(stderr, gettext("cannot share '%s': "
3073 "legacy share\n"), zfs_get_name(zhp));
3074 (void) fprintf(stderr, gettext("use share(1M) to "
3075 "share this filesystem, or set "
3076 "sharenfs property on\n"));
3077 return (1);
3078 }
34dc7c2f 3079
572e2857
BB		 3080 /*
3081 * We cannot share or mount legacy filesystems. If the
3082 * shareopts is non-legacy but the mountpoint is legacy, we
3083 * treat it as a legacy share.
3084 */
3085 if (strcmp(mountpoint, "legacy") == 0) {
3086 if (!explicit)
3087 return (0);
34dc7c2f 3088
572e2857
BB		 3089 (void) fprintf(stderr, gettext("cannot %s '%s': "
3090 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
3091 (void) fprintf(stderr, gettext("use %s(1M) to "
3092 "%s this filesystem\n"), cmdname, cmdname);
3093 return (1);
3094 }
34dc7c2f 3095
572e2857
BB		 3096 if (strcmp(mountpoint, "none") == 0) {
3097 if (!explicit)
3098 return (0);
34dc7c2f 3099
572e2857
BB		 3100 (void) fprintf(stderr, gettext("cannot %s '%s': no "
3101 "mountpoint set\n"), cmdname, zfs_get_name(zhp));
3102 return (1);
3103 }
34dc7c2f 3104
572e2857
BB		 3105 /*
3106 * canmount explicit outcome
3107 * on no pass through
3108 * on yes pass through
3109 * off no return 0
3110 * off yes display error, return 1
3111 * noauto no return 0
3112 * noauto yes pass through
3113 */
3114 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
3115 if (canmount == ZFS_CANMOUNT_OFF) {
3116 if (!explicit)
3117 return (0);
3118
3119 (void) fprintf(stderr, gettext("cannot %s '%s': "
3120 "'canmount' property is set to 'off'\n"), cmdname,
3121 zfs_get_name(zhp));
3122 return (1);
3123 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
3124 return (0);
3125 }
3126
3127 /*
3128 * At this point, we have verified that the mountpoint and/or
3129 * shareopts are appropriate for auto management. If the
3130 * filesystem is already mounted or shared, return (failing
3131 * for explicit requests); otherwise mount or share the
3132 * filesystem.
3133 */
3134 switch (op) {
3135 case OP_SHARE:
3136
3137 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
3138 shared_smb = zfs_is_shared_smb(zhp, NULL);
3139
3140 if (shared_nfs && shared_smb ||
3141 (shared_nfs && strcmp(shareopts, "on") == 0 &&
3142 strcmp(smbshareopts, "off") == 0) ||
3143 (shared_smb && strcmp(smbshareopts, "on") == 0 &&
3144 strcmp(shareopts, "off") == 0)) {
34dc7c2f
BB		 3145 if (!explicit)
3146 return (0);
3147
572e2857
BB		 3148 (void) fprintf(stderr, gettext("cannot share "
3149 "'%s': filesystem already shared\n"),
34dc7c2f
BB		 3150 zfs_get_name(zhp));
3151 return (1);
34dc7c2f
BB		 3152 }
3153
572e2857
BB		 3154 if (!zfs_is_mounted(zhp, NULL) &&
3155 zfs_mount(zhp, NULL, 0) != 0)
3156 return (1);
34dc7c2f 3157
572e2857
BB		 3158 if (protocol == NULL) {
3159 if (zfs_shareall(zhp) != 0)
34dc7c2f 3160 return (1);
572e2857
BB		 3161 } else if (strcmp(protocol, "nfs") == 0) {
3162 if (zfs_share_nfs(zhp))
34dc7c2f 3163 return (1);
572e2857
BB		 3164 } else if (strcmp(protocol, "smb") == 0) {
3165 if (zfs_share_smb(zhp))
34dc7c2f 3166 return (1);
572e2857
BB		 3167 } else {
3168 (void) fprintf(stderr, gettext("cannot share "
3169 "'%s': invalid share type '%s' "
3170 "specified\n"),
3171 zfs_get_name(zhp), protocol);
3172 return (1);
3173 }
34dc7c2f 3174
572e2857 3175 break;
34dc7c2f 3176
572e2857
BB		 3177 case OP_MOUNT:
3178 if (options == NULL)
3179 mnt.mnt_mntopts = "";
3180 else
3181 mnt.mnt_mntopts = (char *)options;
34dc7c2f 3182
572e2857
BB		 3183 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
3184 zfs_is_mounted(zhp, NULL)) {
3185 if (!explicit)
3186 return (0);
34dc7c2f 3187
572e2857
BB		 3188 (void) fprintf(stderr, gettext("cannot mount "
3189 "'%s': filesystem already mounted\n"),
3190 zfs_get_name(zhp));
3191 return (1);
34dc7c2f 3192 }
572e2857
BB		 3193
3194 if (zfs_mount(zhp, options, flags) != 0)
3195 return (1);
3196 break;
3197 }
34dc7c2f 3198
34dc7c2f
BB		 3199 return (0);
3200}
3201
3202/*
3203 * Reports progress in the form "(current/total)". Not thread-safe.
3204 */
3205static void
3206report_mount_progress(int current, int total)
3207{
428870ff 3208 static time_t last_progress_time = 0;
34dc7c2f 3209 time_t now = time(NULL);
428870ff 3210 char info[32];
34dc7c2f
BB		 3211
3212 /* report 1..n instead of 0..n-1 */
3213 ++current;
3214
3215 /* display header if we're here for the first time */
3216 if (current == 1) {
428870ff 3217 set_progress_header(gettext("Mounting ZFS filesystems"));
34dc7c2f
BB		 3218 } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
3219 /* too soon to report again */
3220 return;
3221 }
3222
3223 last_progress_time = now;
3224
428870ff 3225 (void) sprintf(info, "(%d/%d)", current, total);
34dc7c2f 3226
428870ff
BB		 3227 if (current == total)
3228 finish_progress(info);
3229 else
3230 update_progress(info);
34dc7c2f
BB		 3231}
3232
3233static void
3234append_options(char *mntopts, char *newopts)
3235{
3236 int len = strlen(mntopts);
3237
3238 /* original length plus new string to append plus 1 for the comma */
3239 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
3240 (void) fprintf(stderr, gettext("the opts argument for "
d6320ddb 3241 "'%s' option is too long (more than %d chars)\n"),
34dc7c2f
BB		 3242 "-o", MNT_LINE_MAX);
3243 usage(B_FALSE);
3244 }
3245
3246 if (*mntopts)
3247 mntopts[len++] = ',';
3248
3249 (void) strcpy(&mntopts[len], newopts);
3250}
3251
3252static int
3253share_mount(int op, int argc, char **argv)
3254{
3255 int do_all = 0;
3256 boolean_t verbose = B_FALSE;
3257 int c, ret = 0;
3258 char *options = NULL;
572e2857 3259 int flags = 0;
34dc7c2f
BB		 3260
3261 /* check options */
3262 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
3263 != -1) {
3264 switch (c) {
3265 case 'a':
3266 do_all = 1;
3267 break;
3268 case 'v':
3269 verbose = B_TRUE;
3270 break;
3271 case 'o':
3272 if (*optarg == '\0') {
3273 (void) fprintf(stderr, gettext("empty mount "
3274 "options (-o) specified\n"));
3275 usage(B_FALSE);
3276 }
3277
3278 if (options == NULL)
3279 options = safe_malloc(MNT_LINE_MAX + 1);
3280
3281 /* option validation is done later */
3282 append_options(options, optarg);
3283 break;
3284
3285 case 'O':
3286 flags |= MS_OVERLAY;
3287 break;
3288 case ':':
3289 (void) fprintf(stderr, gettext("missing argument for "
3290 "'%c' option\n"), optopt);
3291 usage(B_FALSE);
3292 break;
3293 case '?':
3294 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3295 optopt);
3296 usage(B_FALSE);
3297 }
3298 }
3299
3300 argc -= optind;
3301 argv += optind;
3302
3303 /* check number of arguments */
3304 if (do_all) {
3305 zfs_handle_t **dslist = NULL;
3306 size_t i, count = 0;
3307 char *protocol = NULL;
3308
572e2857
BB		 3309 if (op == OP_SHARE && argc > 0) {
3310 if (strcmp(argv[0], "nfs") != 0 &&
3311 strcmp(argv[0], "smb") != 0) {
34dc7c2f 3312 (void) fprintf(stderr, gettext("share type "
428870ff 3313 "must be 'nfs' or 'smb'\n"));
34dc7c2f
BB		 3314 usage(B_FALSE);
3315 }
3316 protocol = argv[0];
3317 argc--;
3318 argv++;
34dc7c2f
BB		 3319 }
3320
3321 if (argc != 0) {
3322 (void) fprintf(stderr, gettext("too many arguments\n"));
3323 usage(B_FALSE);
3324 }
3325
428870ff 3326 start_progress_timer();
572e2857 3327 get_all_datasets(&dslist, &count, verbose);
34dc7c2f
BB		 3328
3329 if (count == 0)
3330 return (0);
3331
572e2857 3332 qsort(dslist, count, sizeof (void *), libzfs_dataset_cmp);
34dc7c2f
BB		 3333
3334 for (i = 0; i < count; i++) {
3335 if (verbose)
3336 report_mount_progress(i, count);
3337
3338 if (share_mount_one(dslist[i], op, flags, protocol,
3339 B_FALSE, options) != 0)
3340 ret = 1;
3341 zfs_close(dslist[i]);
3342 }
3343
3344 free(dslist);
3345 } else if (argc == 0) {
3346 struct mnttab entry;
3347
3348 if ((op == OP_SHARE) || (options != NULL)) {
3349 (void) fprintf(stderr, gettext("missing filesystem "
3350 "argument (specify -a for all)\n"));
3351 usage(B_FALSE);
3352 }
3353
3354 /*
3355 * When mount is given no arguments, go through /etc/mnttab and
3356 * display any active ZFS mounts. We hide any snapshots, since
3357 * they are controlled automatically.
3358 */
3359 rewind(mnttab_file);
3360 while (getmntent(mnttab_file, &entry) == 0) {
3361 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
3362 strchr(entry.mnt_special, '@') != NULL)
3363 continue;
3364
3365 (void) printf("%-30s %s\n", entry.mnt_special,
3366 entry.mnt_mountp);
3367 }
3368
3369 } else {
3370 zfs_handle_t *zhp;
3371
34dc7c2f
BB		 3372 if (argc > 1) {
3373 (void) fprintf(stderr,
3374 gettext("too many arguments\n"));
3375 usage(B_FALSE);
3376 }
3377
572e2857
BB		 3378 if ((zhp = zfs_open(g_zfs, argv[0],
3379 ZFS_TYPE_FILESYSTEM)) == NULL) {
34dc7c2f
BB		 3380 ret = 1;
3381 } else {
3382 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
3383 options);
3384 zfs_close(zhp);
3385 }
3386 }
3387
3388 return (ret);
3389}
3390
3391/*
428870ff 3392 * zfs mount -a [nfs]
34dc7c2f
BB		 3393 * zfs mount filesystem
3394 *
3395 * Mount all filesystems, or mount the given filesystem.
3396 */
3397static int
3398zfs_do_mount(int argc, char **argv)
3399{
3400 return (share_mount(OP_MOUNT, argc, argv));
3401}
3402
3403/*
428870ff 3404 * zfs share -a [nfs | smb]
34dc7c2f
BB		 3405 * zfs share filesystem
3406 *
3407 * Share all filesystems, or share the given filesystem.
3408 */
3409static int
3410zfs_do_share(int argc, char **argv)
3411{
3412 return (share_mount(OP_SHARE, argc, argv));
3413}
3414
3415typedef struct unshare_unmount_node {
3416 zfs_handle_t *un_zhp;
3417 char *un_mountp;
3418 uu_avl_node_t un_avlnode;
3419} unshare_unmount_node_t;
3420
3421/* ARGSUSED */
3422static int
3423unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
3424{
3425 const unshare_unmount_node_t *l = larg;
3426 const unshare_unmount_node_t *r = rarg;
3427
3428 return (strcmp(l->un_mountp, r->un_mountp));
3429}
3430
3431/*
3432 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an
3433 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
3434 * and unmount it appropriately.
3435 */
3436static int
3437unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
3438{
3439 zfs_handle_t *zhp;
3440 int ret;
3441 struct stat64 statbuf;
3442 struct extmnttab entry;
3443 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
3444 ino_t path_inode;
3445
3446 /*
3447 * Search for the path in /etc/mnttab. Rather than looking for the
3448 * specific path, which can be fooled by non-standard paths (i.e. ".."
3449 * or "//"), we stat() the path and search for the corresponding
3450 * (major,minor) device pair.
3451 */
3452 if (stat64(path, &statbuf) != 0) {
3453 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
3454 cmdname, path, strerror(errno));
3455 return (1);
3456 }
3457 path_inode = statbuf.st_ino;
3458
3459 /*
3460 * Search for the given (major,minor) pair in the mount table.
3461 */
3462 rewind(mnttab_file);
3463 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
3464 if (entry.mnt_major == major(statbuf.st_dev) &&
3465 entry.mnt_minor == minor(statbuf.st_dev))
3466 break;
3467 }
3468 if (ret != 0) {
3469 if (op == OP_SHARE) {
3470 (void) fprintf(stderr, gettext("cannot %s '%s': not "
3471 "currently mounted\n"), cmdname, path);
3472 return (1);
3473 }
3474 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
3475 path);
3476 if ((ret = umount2(path, flags)) != 0)
3477 (void) fprintf(stderr, gettext("%s: %s\n"), path,
3478 strerror(errno));
3479 return (ret != 0);
3480 }
3481
3482 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
3483 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
3484 "filesystem\n"), cmdname, path);
3485 return (1);
3486 }
3487
3488 if ((zhp = zfs_open(g_zfs, entry.mnt_special,
3489 ZFS_TYPE_FILESYSTEM)) == NULL)
3490 return (1);
3491
34dc7c2f 3492 ret = 1;
b128c09f
BB		 3493 if (stat64(entry.mnt_mountp, &statbuf) != 0) {
3494 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
3495 cmdname, path, strerror(errno));
3496 goto out;
3497 } else if (statbuf.st_ino != path_inode) {
3498 (void) fprintf(stderr, gettext("cannot "
3499 "%s '%s': not a mountpoint\n"), cmdname, path);
3500 goto out;
3501 }
3502
34dc7c2f
BB		 3503 if (op == OP_SHARE) {
3504 char nfs_mnt_prop[ZFS_MAXPROPLEN];
3505 char smbshare_prop[ZFS_MAXPROPLEN];
3506
3507 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
3508 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
3509 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
3510 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
3511
3512 if (strcmp(nfs_mnt_prop, "off") == 0 &&
3513 strcmp(smbshare_prop, "off") == 0) {
3514 (void) fprintf(stderr, gettext("cannot unshare "
3515 "'%s': legacy share\n"), path);
3516 (void) fprintf(stderr, gettext("use "
3517 "unshare(1M) to unshare this filesystem\n"));
3518 } else if (!zfs_is_shared(zhp)) {
3519 (void) fprintf(stderr, gettext("cannot unshare '%s': "
3520 "not currently shared\n"), path);
3521 } else {
3522 ret = zfs_unshareall_bypath(zhp, path);
3523 }
3524 } else {
3525 char mtpt_prop[ZFS_MAXPROPLEN];
3526
3527 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
3528 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
3529
b128c09f 3530 if (is_manual) {
34dc7c2f
BB		 3531 ret = zfs_unmount(zhp, NULL, flags);
3532 } else if (strcmp(mtpt_prop, "legacy") == 0) {
3533 (void) fprintf(stderr, gettext("cannot unmount "
3534 "'%s': legacy mountpoint\n"),
3535 zfs_get_name(zhp));
3536 (void) fprintf(stderr, gettext("use umount(1M) "
3537 "to unmount this filesystem\n"));
3538 } else {
3539 ret = zfs_unmountall(zhp, flags);
3540 }
3541 }
3542
b128c09f 3543out:
34dc7c2f
BB		 3544 zfs_close(zhp);
3545
3546 return (ret != 0);
3547}
3548
3549/*
3550 * Generic callback for unsharing or unmounting a filesystem.
3551 */
3552static int
3553unshare_unmount(int op, int argc, char **argv)
3554{
3555 int do_all = 0;
3556 int flags = 0;
3557 int ret = 0;
572e2857 3558 int c;
34dc7c2f 3559 zfs_handle_t *zhp;
428870ff 3560 char nfs_mnt_prop[ZFS_MAXPROPLEN];
34dc7c2f
BB		 3561 char sharesmb[ZFS_MAXPROPLEN];
3562
3563 /* check options */
3564 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
3565 switch (c) {
3566 case 'a':
3567 do_all = 1;
3568 break;
3569 case 'f':
3570 flags = MS_FORCE;
3571 break;
3572 case '?':
3573 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3574 optopt);
3575 usage(B_FALSE);
3576 }
3577 }
3578
3579 argc -= optind;
3580 argv += optind;
3581
3582 if (do_all) {
3583 /*
3584 * We could make use of zfs_for_each() to walk all datasets in
3585 * the system, but this would be very inefficient, especially
3586 * since we would have to linearly search /etc/mnttab for each
3587 * one. Instead, do one pass through /etc/mnttab looking for
3588 * zfs entries and call zfs_unmount() for each one.
3589 *
3590 * Things get a little tricky if the administrator has created
3591 * mountpoints beneath other ZFS filesystems. In this case, we
3592 * have to unmount the deepest filesystems first. To accomplish
3593 * this, we place all the mountpoints in an AVL tree sorted by
3594 * the special type (dataset name), and walk the result in
3595 * reverse to make sure to get any snapshots first.
3596 */
3597 struct mnttab entry;
3598 uu_avl_pool_t *pool;
3599 uu_avl_t *tree;
3600 unshare_unmount_node_t *node;
3601 uu_avl_index_t idx;
3602 uu_avl_walk_t *walk;
3603
3604 if (argc != 0) {
3605 (void) fprintf(stderr, gettext("too many arguments\n"));
3606 usage(B_FALSE);
3607 }
3608
428870ff 3609 if (((pool = uu_avl_pool_create("unmount_pool",
34dc7c2f
BB		 3610 sizeof (unshare_unmount_node_t),
3611 offsetof(unshare_unmount_node_t, un_avlnode),
428870ff
BB		 3612 unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
3613 ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
3614 nomem();
34dc7c2f
BB		 3615
3616 rewind(mnttab_file);
3617 while (getmntent(mnttab_file, &entry) == 0) {
3618
3619 /* ignore non-ZFS entries */
3620 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
3621 continue;
3622
3623 /* ignore snapshots */
3624 if (strchr(entry.mnt_special, '@') != NULL)
3625 continue;
3626
3627 if ((zhp = zfs_open(g_zfs, entry.mnt_special,
3628 ZFS_TYPE_FILESYSTEM)) == NULL) {
3629 ret = 1;
3630 continue;
3631 }
3632
3633 switch (op) {
3634 case OP_SHARE:
3635 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
428870ff
BB		 3636 nfs_mnt_prop,
3637 sizeof (nfs_mnt_prop),
34dc7c2f 3638 NULL, NULL, 0, B_FALSE) == 0);
428870ff 3639 if (strcmp(nfs_mnt_prop, "off") != 0)
34dc7c2f
BB		 3640 break;
3641 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
428870ff
BB		 3642 nfs_mnt_prop,
3643 sizeof (nfs_mnt_prop),
34dc7c2f 3644 NULL, NULL, 0, B_FALSE) == 0);
428870ff 3645 if (strcmp(nfs_mnt_prop, "off") == 0)
34dc7c2f
BB		 3646 continue;
3647 break;
3648 case OP_MOUNT:
3649 /* Ignore legacy mounts */
3650 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
428870ff
BB		 3651 nfs_mnt_prop,
3652 sizeof (nfs_mnt_prop),
34dc7c2f 3653 NULL, NULL, 0, B_FALSE) == 0);
428870ff 3654 if (strcmp(nfs_mnt_prop, "legacy") == 0)
34dc7c2f
BB		 3655 continue;
3656 /* Ignore canmount=noauto mounts */
3657 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
3658 ZFS_CANMOUNT_NOAUTO)
3659 continue;
3660 default:
3661 break;
3662 }
3663
3664 node = safe_malloc(sizeof (unshare_unmount_node_t));
3665 node->un_zhp = zhp;
428870ff 3666 node->un_mountp = safe_strdup(entry.mnt_mountp);
34dc7c2f
BB		 3667
3668 uu_avl_node_init(node, &node->un_avlnode, pool);
3669
3670 if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
3671 uu_avl_insert(tree, node, idx);
3672 } else {
3673 zfs_close(node->un_zhp);
3674 free(node->un_mountp);
3675 free(node);
3676 }
3677 }
3678
3679 /*
3680 * Walk the AVL tree in reverse, unmounting each filesystem and
3681 * removing it from the AVL tree in the process.
3682 */
3683 if ((walk = uu_avl_walk_start(tree,
428870ff
BB		 3684 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
3685 nomem();
34dc7c2f
BB		 3686
3687 while ((node = uu_avl_walk_next(walk)) != NULL) {
3688 uu_avl_remove(tree, node);
3689
3690 switch (op) {
3691 case OP_SHARE:
3692 if (zfs_unshareall_bypath(node->un_zhp,
3693 node->un_mountp) != 0)
3694 ret = 1;
3695 break;
3696
3697 case OP_MOUNT:
3698 if (zfs_unmount(node->un_zhp,
3699 node->un_mountp, flags) != 0)
3700 ret = 1;
3701 break;
3702 }
3703
3704 zfs_close(node->un_zhp);
3705 free(node->un_mountp);
3706 free(node);
3707 }
3708
3709 uu_avl_walk_end(walk);
3710 uu_avl_destroy(tree);
3711 uu_avl_pool_destroy(pool);
3712
34dc7c2f
BB		 3713 } else {
3714 if (argc != 1) {
3715 if (argc == 0)
3716 (void) fprintf(stderr,
3717 gettext("missing filesystem argument\n"));
3718 else
3719 (void) fprintf(stderr,
3720 gettext("too many arguments\n"));
3721 usage(B_FALSE);
3722 }
3723
3724 /*
3725 * We have an argument, but it may be a full path or a ZFS
3726 * filesystem. Pass full paths off to unmount_path() (shared by
3727 * manual_unmount), otherwise open the filesystem and pass to
3728 * zfs_unmount().
3729 */
3730 if (argv[0][0] == '/')
3731 return (unshare_unmount_path(op, argv[0],
3732 flags, B_FALSE));
3733
572e2857
BB		 3734 if ((zhp = zfs_open(g_zfs, argv[0],
3735 ZFS_TYPE_FILESYSTEM)) == NULL)
34dc7c2f
BB		 3736 return (1);
3737
572e2857
BB		 3738 verify(zfs_prop_get(zhp, op == OP_SHARE ?
3739 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
3740 nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
3741 NULL, 0, B_FALSE) == 0);
34dc7c2f 3742
572e2857
BB		 3743 switch (op) {
3744 case OP_SHARE:
3745 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
3746 nfs_mnt_prop,
3747 sizeof (nfs_mnt_prop),
3748 NULL, NULL, 0, B_FALSE) == 0);
3749 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
3750 sharesmb, sizeof (sharesmb), NULL, NULL,
3751 0, B_FALSE) == 0);
3752
3753 if (strcmp(nfs_mnt_prop, "off") == 0 &&
3754 strcmp(sharesmb, "off") == 0) {
3755 (void) fprintf(stderr, gettext("cannot "
3756 "unshare '%s': legacy share\n"),
3757 zfs_get_name(zhp));
3758 (void) fprintf(stderr, gettext("use "
3759 "unshare(1M) to unshare this "
3760 "filesystem\n"));
3761 ret = 1;
3762 } else if (!zfs_is_shared(zhp)) {
3763 (void) fprintf(stderr, gettext("cannot "
3764 "unshare '%s': not currently "
3765 "shared\n"), zfs_get_name(zhp));
3766 ret = 1;
3767 } else if (zfs_unshareall(zhp) != 0) {
3768 ret = 1;
3769 }
3770 break;
34dc7c2f 3771
572e2857
BB		 3772 case OP_MOUNT:
3773 if (strcmp(nfs_mnt_prop, "legacy") == 0) {
3774 (void) fprintf(stderr, gettext("cannot "
3775 "unmount '%s': legacy "
3776 "mountpoint\n"), zfs_get_name(zhp));
3777 (void) fprintf(stderr, gettext("use "
3778 "umount(1M) to unmount this "
3779 "filesystem\n"));
3780 ret = 1;
3781 } else if (!zfs_is_mounted(zhp, NULL)) {
3782 (void) fprintf(stderr, gettext("cannot "
3783 "unmount '%s': not currently "
3784 "mounted\n"),
3785 zfs_get_name(zhp));
3786 ret = 1;
3787 } else if (zfs_unmountall(zhp, flags) != 0) {
3788 ret = 1;
34dc7c2f 3789 }
572e2857 3790 break;
34dc7c2f
BB		 3791 }
3792
3793 zfs_close(zhp);
3794 }
3795
3796 return (ret);
3797}
3798
3799/*
3800 * zfs unmount -a
3801 * zfs unmount filesystem
3802 *
3803 * Unmount all filesystems, or a specific ZFS filesystem.
3804 */
3805static int
3806zfs_do_unmount(int argc, char **argv)
3807{
3808 return (unshare_unmount(OP_MOUNT, argc, argv));
3809}
3810
3811/*
3812 * zfs unshare -a
3813 * zfs unshare filesystem
3814 *
3815 * Unshare all filesystems, or a specific ZFS filesystem.
3816 */
3817static int
3818zfs_do_unshare(int argc, char **argv)
3819{
3820 return (unshare_unmount(OP_SHARE, argc, argv));
3821}
3822
9babb374
BB		 3823/* ARGSUSED */
3824static int
3825zfs_do_python(int argc, char **argv)
3826{
3827 (void) execv(pypath, argv-1);
3828 (void) printf("internal error: %s not found\n", pypath);
3829 return (-1);
3830}
3831
34dc7c2f
BB		 3832/*
3833 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is
3834 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'.
3835 */
3836static int
3837manual_mount(int argc, char **argv)
3838{
3839 zfs_handle_t *zhp;
3840 char mountpoint[ZFS_MAXPROPLEN];
3841 char mntopts[MNT_LINE_MAX] = { '\0' };
3842 int ret;
3843 int c;
3844 int flags = 0;
3845 char *dataset, *path;
3846
3847 /* check options */
3848 while ((c = getopt(argc, argv, ":mo:O")) != -1) {
3849 switch (c) {
3850 case 'o':
3851 (void) strlcpy(mntopts, optarg, sizeof (mntopts));
3852 break;
3853 case 'O':
3854 flags |= MS_OVERLAY;
3855 break;
3856 case 'm':
3857 flags |= MS_NOMNTTAB;
3858 break;
3859 case ':':
3860 (void) fprintf(stderr, gettext("missing argument for "
3861 "'%c' option\n"), optopt);
3862 usage(B_FALSE);
3863 break;
3864 case '?':
3865 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3866 optopt);
3867 (void) fprintf(stderr, gettext("usage: mount [-o opts] "
3868 "<path>\n"));
3869 return (2);
3870 }
3871 }
3872
3873 argc -= optind;
3874 argv += optind;
3875
3876 /* check that we only have two arguments */
3877 if (argc != 2) {
3878 if (argc == 0)
3879 (void) fprintf(stderr, gettext("missing dataset "
3880 "argument\n"));
3881 else if (argc == 1)
3882 (void) fprintf(stderr,
3883 gettext("missing mountpoint argument\n"));
3884 else
3885 (void) fprintf(stderr, gettext("too many arguments\n"));
3886 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
3887 return (2);
3888 }
3889
3890 dataset = argv[0];
3891 path = argv[1];
3892
3893 /* try to open the dataset */
3894 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
3895 return (1);
3896
3897 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
3898 sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
3899
3900 /* check for legacy mountpoint and complain appropriately */
3901 ret = 0;
3902 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
3903 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS,
3904 NULL, 0, mntopts, sizeof (mntopts)) != 0) {
3905 (void) fprintf(stderr, gettext("mount failed: %s\n"),
3906 strerror(errno));
3907 ret = 1;
3908 }
3909 } else {
3910 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
3911 "mounted using 'mount -F zfs'\n"), dataset);
3912 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
3913 "instead.\n"), path);
3914 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' "
3915 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n"));
3916 (void) fprintf(stderr, gettext("See zfs(1M) for more "
3917 "information.\n"));
3918 ret = 1;
3919 }
3920
3921 return (ret);
3922}
3923
3924/*
3925 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow
3926 * unmounts of non-legacy filesystems, as this is the dominant administrative
3927 * interface.
3928 */
3929static int
3930manual_unmount(int argc, char **argv)
3931{
3932 int flags = 0;
3933 int c;
3934
3935 /* check options */
3936 while ((c = getopt(argc, argv, "f")) != -1) {
3937 switch (c) {
3938 case 'f':
3939 flags = MS_FORCE;
3940 break;
3941 case '?':
3942 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3943 optopt);
3944 (void) fprintf(stderr, gettext("usage: unmount [-f] "
3945 "<path>\n"));
3946 return (2);
3947 }
3948 }
3949
3950 argc -= optind;
3951 argv += optind;
3952
3953 /* check arguments */
3954 if (argc != 1) {
3955 if (argc == 0)
3956 (void) fprintf(stderr, gettext("missing path "
3957 "argument\n"));
3958 else
3959 (void) fprintf(stderr, gettext("too many arguments\n"));
3960 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
3961 return (2);
3962 }
3963
3964 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
3965}
3966
34dc7c2f
BB		 3967static int
3968find_command_idx(char *command, int *idx)
3969{
3970 int i;
3971
3972 for (i = 0; i < NCOMMAND; i++) {
3973 if (command_table[i].name == NULL)
3974 continue;
3975
3976 if (strcmp(command, command_table[i].name) == 0) {
3977 *idx = i;
3978 return (0);
3979 }
3980 }
3981 return (1);
3982}
3983
572e2857
BB		 3984static int
3985zfs_do_diff(int argc, char **argv)
3986{
3987 zfs_handle_t *zhp;
3988 int flags = 0;
3989 char *tosnap = NULL;
3990 char *fromsnap = NULL;
3991 char *atp, *copy;
3992 int err;
3993 int c;
3994
3995 while ((c = getopt(argc, argv, "FHt")) != -1) {
3996 switch (c) {
3997 case 'F':
3998 flags |= ZFS_DIFF_CLASSIFY;
3999 break;
4000 case 'H':
4001 flags |= ZFS_DIFF_PARSEABLE;
4002 break;
4003 case 't':
4004 flags |= ZFS_DIFF_TIMESTAMP;
4005 break;
4006 default:
4007 (void) fprintf(stderr,
4008 gettext("invalid option '%c'\n"), optopt);
4009 usage(B_FALSE);
4010 }
4011 }
4012
4013 argc -= optind;
4014 argv += optind;
4015
4016 if (argc < 1) {
4017 (void) fprintf(stderr,
4018 gettext("must provide at least one snapshot name\n"));
4019 usage(B_FALSE);
4020 }
4021
4022 if (argc > 2) {
4023 (void) fprintf(stderr, gettext("too many arguments\n"));
4024 usage(B_FALSE);
4025 }
4026
4027 fromsnap = argv[0];
4028 tosnap = (argc == 2) ? argv[1] : NULL;
4029
4030 copy = NULL;
4031 if (*fromsnap != '@')
4032 copy = strdup(fromsnap);
4033 else if (tosnap)
4034 copy = strdup(tosnap);
4035 if (copy == NULL)
4036 usage(B_FALSE);
4037
c65aa5b2 4038 if ((atp = strchr(copy, '@')))
572e2857
BB		 4039 *atp = '\0';
4040
4041 if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL)
4042 return (1);
4043
4044 free(copy);
4045
4046 /*
4047 * Ignore SIGPIPE so that the library can give us
4048 * information on any failure
4049 */
4050 (void) sigignore(SIGPIPE);
4051
4052 err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
4053
4054 zfs_close(zhp);
4055
4056 return (err != 0);
4057}
4058
34dc7c2f
BB		 4059int
4060main(int argc, char **argv)
4061{
4062 int ret;
4063 int i;
4064 char *progname;
4065 char *cmdname;
4066
4067 (void) setlocale(LC_ALL, "");
4068 (void) textdomain(TEXT_DOMAIN);
4069
4070 opterr = 0;
4071
4072 if ((g_zfs = libzfs_init()) == NULL) {
4073 (void) fprintf(stderr, gettext("internal error: failed to "
4074 "initialize ZFS library\n"));
4075 return (1);
4076 }
4077
4078 zpool_set_history_str("zfs", argc, argv, history_str);
4079 verify(zpool_stage_history(g_zfs, history_str) == 0);
4080
4081 libzfs_print_on_error(g_zfs, B_TRUE);
4082
4083 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
4084 (void) fprintf(stderr, gettext("internal error: unable to "
4085 "open %s\n"), MNTTAB);
4086 return (1);
4087 }
4088
4089 /*
4090 * This command also doubles as the /etc/fs mount and unmount program.
4091 * Determine if we should take this behavior based on argv[0].
4092 */
4093 progname = basename(argv[0]);
4094 if (strcmp(progname, "mount") == 0) {
4095 ret = manual_mount(argc, argv);
4096 } else if (strcmp(progname, "umount") == 0) {
4097 ret = manual_unmount(argc, argv);
4098 } else {
4099 /*
4100 * Make sure the user has specified some command.
4101 */
4102 if (argc < 2) {
4103 (void) fprintf(stderr, gettext("missing command\n"));
4104 usage(B_FALSE);
4105 }
4106
4107 cmdname = argv[1];
4108
4109 /*
4110 * The 'umount' command is an alias for 'unmount'
4111 */
4112 if (strcmp(cmdname, "umount") == 0)
4113 cmdname = "unmount";
4114
4115 /*
4116 * The 'recv' command is an alias for 'receive'
4117 */
4118 if (strcmp(cmdname, "recv") == 0)
4119 cmdname = "receive";
4120
4121 /*
4122 * Special case '-?'
4123 */
4124 if (strcmp(cmdname, "-?") == 0)
4125 usage(B_TRUE);
4126
34dc7c2f
BB		 4127 /*
4128 * Run the appropriate command.
4129 */
9babb374 4130 libzfs_mnttab_cache(g_zfs, B_TRUE);
34dc7c2f
BB		 4131 if (find_command_idx(cmdname, &i) == 0) {
4132 current_command = &command_table[i];
4133 ret = command_table[i].func(argc - 1, argv + 1);
4134 } else if (strchr(cmdname, '=') != NULL) {
4135 verify(find_command_idx("set", &i) == 0);
4136 current_command = &command_table[i];
4137 ret = command_table[i].func(argc, argv);
4138 } else {
4139 (void) fprintf(stderr, gettext("unrecognized "
4140 "command '%s'\n"), cmdname);
4141 usage(B_FALSE);
4142 }
9babb374 4143 libzfs_mnttab_cache(g_zfs, B_FALSE);
34dc7c2f
BB		 4144 }
4145
4146 (void) fclose(mnttab_file);
4147
4148 libzfs_fini(g_zfs);
4149
4150 /*
4151 * The 'ZFS_ABORT' environment variable causes us to dump core on exit
4152 * for the purposes of running ::findleaks.
4153 */
4154 if (getenv("ZFS_ABORT") != NULL) {
4155 (void) printf("dumping core by request\n");
4156 abort();
4157 }
4158
4159 return (ret);
4160}
ZFS On Linux mirror for PVE