1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <assert.h>
28 #include <ctype.h>
29 #include <errno.h>
30 #include <libgen.h>
31 #include <libintl.h>
32 #include <libuutil.h>
33 #include <libnvpair.h>
34 #include <locale.h>
35 #include <stddef.h>
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <strings.h>
39 #include <unistd.h>
40 #include <fcntl.h>
41 #include <zone.h>
42 #include <grp.h>
43 #include <pwd.h>
44 #include <sys/mkdev.h>
45 #include <sys/mntent.h>
46 #include <sys/mnttab.h>
47 #include <sys/mount.h>
48 #include <sys/stat.h>
49 #include <sys/fs/zfs.h>
50
51 #include <libzfs.h>
52 #include <libuutil.h>
53
54 #include "zfs_iter.h"
55 #include "zfs_util.h"
56
57 libzfs_handle_t *g_zfs;
58
59 static FILE *mnttab_file;
60 static char history_str[HIS_MAX_RECORD_LEN];
61 const char *pypath = "/usr/lib/zfs/pyzfs.py";
62
63 static int zfs_do_clone(int argc, char **argv);
64 static int zfs_do_create(int argc, char **argv);
65 static int zfs_do_destroy(int argc, char **argv);
66 static int zfs_do_get(int argc, char **argv);
67 static int zfs_do_inherit(int argc, char **argv);
68 static int zfs_do_list(int argc, char **argv);
69 static int zfs_do_mount(int argc, char **argv);
70 static int zfs_do_rename(int argc, char **argv);
71 static int zfs_do_rollback(int argc, char **argv);
72 static int zfs_do_set(int argc, char **argv);
73 static int zfs_do_upgrade(int argc, char **argv);
74 static int zfs_do_snapshot(int argc, char **argv);
75 static int zfs_do_unmount(int argc, char **argv);
76 static int zfs_do_share(int argc, char **argv);
77 static int zfs_do_unshare(int argc, char **argv);
78 static int zfs_do_send(int argc, char **argv);
79 static int zfs_do_receive(int argc, char **argv);
80 static int zfs_do_promote(int argc, char **argv);
81 static int zfs_do_userspace(int argc, char **argv);
82 static int zfs_do_python(int argc, char **argv);
83 static int zfs_do_hold(int argc, char **argv);
84 static int zfs_do_release(int argc, char **argv);
85
86 /*
87 * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
88 */
89
90 #ifdef DEBUG
91 const char *
_umem_debug_init(void)92 _umem_debug_init(void)
93 {
94 return ("default,verbose"); /* $UMEM_DEBUG setting */
95 }
96
97 const char *
_umem_logging_init(void)98 _umem_logging_init(void)
99 {
100 return ("fail,contents"); /* $UMEM_LOGGING setting */
101 }
102 #endif
103
104 typedef enum {
105 HELP_CLONE,
106 HELP_CREATE,
107 HELP_DESTROY,
108 HELP_GET,
109 HELP_INHERIT,
110 HELP_UPGRADE,
111 HELP_LIST,
112 HELP_MOUNT,
113 HELP_PROMOTE,
114 HELP_RECEIVE,
115 HELP_RENAME,
116 HELP_ROLLBACK,
117 HELP_SEND,
118 HELP_SET,
119 HELP_SHARE,
120 HELP_SNAPSHOT,
121 HELP_UNMOUNT,
122 HELP_UNSHARE,
123 HELP_ALLOW,
124 HELP_UNALLOW,
125 HELP_USERSPACE,
126 HELP_GROUPSPACE,
127 HELP_HOLD,
128 HELP_HOLDS,
129 HELP_RELEASE
130 } zfs_help_t;
131
132 typedef struct zfs_command {
133 const char *name;
134 int (*func)(int argc, char **argv);
135 zfs_help_t usage;
136 } zfs_command_t;
137
138 /*
139 * Master command table. Each ZFS command has a name, associated function, and
140 * usage message. The usage messages need to be internationalized, so we have
141 * to have a function to return the usage message based on a command index.
142 *
143 * These commands are organized according to how they are displayed in the usage
144 * message. An empty command (one with a NULL name) indicates an empty line in
145 * the generic usage message.
146 */
147 static zfs_command_t command_table[] = {
148 { "create", zfs_do_create, HELP_CREATE },
149 { "destroy", zfs_do_destroy, HELP_DESTROY },
150 { NULL },
151 { "snapshot", zfs_do_snapshot, HELP_SNAPSHOT },
152 { "rollback", zfs_do_rollback, HELP_ROLLBACK },
153 { "clone", zfs_do_clone, HELP_CLONE },
154 { "promote", zfs_do_promote, HELP_PROMOTE },
155 { "rename", zfs_do_rename, HELP_RENAME },
156 { NULL },
157 { "list", zfs_do_list, HELP_LIST },
158 { NULL },
159 { "set", zfs_do_set, HELP_SET },
160 { "get", zfs_do_get, HELP_GET },
161 { "inherit", zfs_do_inherit, HELP_INHERIT },
162 { "upgrade", zfs_do_upgrade, HELP_UPGRADE },
163 { "userspace", zfs_do_userspace, HELP_USERSPACE },
164 { "groupspace", zfs_do_userspace, HELP_GROUPSPACE },
165 { NULL },
166 { "mount", zfs_do_mount, HELP_MOUNT },
167 { "unmount", zfs_do_unmount, HELP_UNMOUNT },
168 { "share", zfs_do_share, HELP_SHARE },
169 { "unshare", zfs_do_unshare, HELP_UNSHARE },
170 { NULL },
171 { "send", zfs_do_send, HELP_SEND },
172 { "receive", zfs_do_receive, HELP_RECEIVE },
173 { NULL },
174 { "allow", zfs_do_python, HELP_ALLOW },
175 { NULL },
176 { "unallow", zfs_do_python, HELP_UNALLOW },
177 { NULL },
178 { "hold", zfs_do_hold, HELP_HOLD },
179 { "holds", zfs_do_python, HELP_HOLDS },
180 { "release", zfs_do_release, HELP_RELEASE },
181 };
182
183 #define NCOMMAND (sizeof (command_table) / sizeof (command_table[0]))
184
185 zfs_command_t *current_command;
186
187 static const char *
get_usage(zfs_help_t idx)188 get_usage(zfs_help_t idx)
189 {
190 switch (idx) {
191 case HELP_CLONE:
192 return (gettext("\tclone [-p] [-o property=value] ... "
193 "<snapshot> <filesystem|volume>\n"));
194 case HELP_CREATE:
195 return (gettext("\tcreate [-p] [-o property=value] ... "
196 "<filesystem>\n"
197 "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
198 "-V <size> <volume>\n"));
199 case HELP_DESTROY:
200 return (gettext("\tdestroy [-rRf] <filesystem|volume>\n"
201 "\tdestroy [-rRd] <snapshot>\n"));
202 case HELP_GET:
203 return (gettext("\tget [-rHp] [-d max] "
204 "[-o \"all\" | field[,...]] [-s source[,...]]\n"
205 "\t <\"all\" | property[,...]> "
206 "[filesystem|volume|snapshot] ...\n"));
207 case HELP_INHERIT:
208 return (gettext("\tinherit [-rS] <property> "
209 "<filesystem|volume|snapshot> ...\n"));
210 case HELP_UPGRADE:
211 return (gettext("\tupgrade [-v]\n"
212 "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
213 case HELP_LIST:
214 return (gettext("\tlist [-rH][-d max] "
215 "[-o property[,...]] [-t type[,...]] [-s property] ...\n"
216 "\t [-S property] ... "
217 "[filesystem|volume|snapshot] ...\n"));
218 case HELP_MOUNT:
219 return (gettext("\tmount\n"
220 "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
221 case HELP_PROMOTE:
222 return (gettext("\tpromote <clone-filesystem>\n"));
223 case HELP_RECEIVE:
224 return (gettext("\treceive [-vnF] <filesystem|volume|"
225 "snapshot>\n"
226 "\treceive [-vnF] -d <filesystem>\n"));
227 case HELP_RENAME:
228 return (gettext("\trename <filesystem|volume|snapshot> "
229 "<filesystem|volume|snapshot>\n"
230 "\trename -p <filesystem|volume> <filesystem|volume>\n"
231 "\trename -r <snapshot> <snapshot>"));
232 case HELP_ROLLBACK:
233 return (gettext("\trollback [-rRf] <snapshot>\n"));
234 case HELP_SEND:
235 return (gettext("\tsend [-RDp] [-[iI] snapshot] <snapshot>\n"));
236 case HELP_SET:
237 return (gettext("\tset <property=value> "
238 "<filesystem|volume|snapshot> ...\n"));
239 case HELP_SHARE:
240 return (gettext("\tshare <-a | filesystem>\n"));
241 case HELP_SNAPSHOT:
242 return (gettext("\tsnapshot [-r] [-o property=value] ... "
243 "<filesystem@snapname|volume@snapname>\n"));
244 case HELP_UNMOUNT:
245 return (gettext("\tunmount [-f] "
246 "<-a | filesystem|mountpoint>\n"));
247 case HELP_UNSHARE:
248 return (gettext("\tunshare "
249 "<-a | filesystem|mountpoint>\n"));
250 case HELP_ALLOW:
251 return (gettext("\tallow <filesystem|volume>\n"
252 "\tallow [-ldug] "
253 "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
254 "\t <filesystem|volume>\n"
255 "\tallow [-ld] -e <perm|@setname>[,...] "
256 "<filesystem|volume>\n"
257 "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
258 "\tallow -s @setname <perm|@setname>[,...] "
259 "<filesystem|volume>\n"));
260 case HELP_UNALLOW:
261 return (gettext("\tunallow [-rldug] "
262 "<\"everyone\"|user|group>[,...]\n"
263 "\t [<perm|@setname>[,...]] <filesystem|volume>\n"
264 "\tunallow [-rld] -e [<perm|@setname>[,...]] "
265 "<filesystem|volume>\n"
266 "\tunallow [-r] -c [<perm|@setname>[,...]] "
267 "<filesystem|volume>\n"
268 "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
269 "<filesystem|volume>\n"));
270 case HELP_USERSPACE:
271 return (gettext("\tuserspace [-hniHp] [-o field[,...]] "
272 "[-sS field] ... [-t type[,...]]\n"
273 "\t <filesystem|snapshot>\n"));
274 case HELP_GROUPSPACE:
275 return (gettext("\tgroupspace [-hniHpU] [-o field[,...]] "
276 "[-sS field] ... [-t type[,...]]\n"
277 "\t <filesystem|snapshot>\n"));
278 case HELP_HOLD:
279 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
280 case HELP_HOLDS:
281 return (gettext("\tholds [-r] <snapshot> ...\n"));
282 case HELP_RELEASE:
283 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
284 }
285
286 abort();
287 /* NOTREACHED */
288 }
289
290 /*
291 * Utility function to guarantee malloc() success.
292 */
293 void *
safe_malloc(size_t size)294 safe_malloc(size_t size)
295 {
296 void *data;
297
298 if ((data = calloc(1, size)) == NULL) {
299 (void) fprintf(stderr, "internal error: out of memory\n");
300 exit(1);
301 }
302
303 return (data);
304 }
305
306 /*
307 * Callback routine that will print out information for each of
308 * the properties.
309 */
310 static int
usage_prop_cb(int prop,void * cb)311 usage_prop_cb(int prop, void *cb)
312 {
313 FILE *fp = cb;
314
315 (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
316
317 if (zfs_prop_readonly(prop))
318 (void) fprintf(fp, " NO ");
319 else
320 (void) fprintf(fp, "YES ");
321
322 if (zfs_prop_inheritable(prop))
323 (void) fprintf(fp, " YES ");
324 else
325 (void) fprintf(fp, " NO ");
326
327 if (zfs_prop_values(prop) == NULL)
328 (void) fprintf(fp, "-\n");
329 else
330 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
331
332 return (ZPROP_CONT);
333 }
334
335 /*
336 * Display usage message. If we're inside a command, display only the usage for
337 * that command. Otherwise, iterate over the entire command table and display
338 * a complete usage message.
339 */
340 static void
usage(boolean_t requested)341 usage(boolean_t requested)
342 {
343 int i;
344 boolean_t show_properties = B_FALSE;
345 FILE *fp = requested ? stdout : stderr;
346
347 if (current_command == NULL) {
348
349 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
350 (void) fprintf(fp,
351 gettext("where 'command' is one of the following:\n\n"));
352
353 for (i = 0; i < NCOMMAND; i++) {
354 if (command_table[i].name == NULL)
355 (void) fprintf(fp, "\n");
356 else
357 (void) fprintf(fp, "%s",
358 get_usage(command_table[i].usage));
359 }
360
361 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
362 "pool/[dataset/]*dataset[@name]\n"));
363 } else {
364 (void) fprintf(fp, gettext("usage:\n"));
365 (void) fprintf(fp, "%s", get_usage(current_command->usage));
366 }
367
368 if (current_command != NULL &&
369 (strcmp(current_command->name, "set") == 0 ||
370 strcmp(current_command->name, "get") == 0 ||
371 strcmp(current_command->name, "inherit") == 0 ||
372 strcmp(current_command->name, "list") == 0))
373 show_properties = B_TRUE;
374
375 if (show_properties) {
376 (void) fprintf(fp,
377 gettext("\nThe following properties are supported:\n"));
378
379 (void) fprintf(fp, "\n\t%-14s %s %s %s\n\n",
380 "PROPERTY", "EDIT", "INHERIT", "VALUES");
381
382 /* Iterate over all properties */
383 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
384 ZFS_TYPE_DATASET);
385
386 (void) fprintf(fp, "\t%-15s ", "userused@...");
387 (void) fprintf(fp, " NO NO <size>\n");
388 (void) fprintf(fp, "\t%-15s ", "groupused@...");
389 (void) fprintf(fp, " NO NO <size>\n");
390 (void) fprintf(fp, "\t%-15s ", "userquota@...");
391 (void) fprintf(fp, "YES NO <size> | none\n");
392 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
393 (void) fprintf(fp, "YES NO <size> | none\n");
394
395 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
396 "with standard units such as K, M, G, etc.\n"));
397 (void) fprintf(fp, gettext("\nUser-defined properties can "
398 "be specified by using a name containing a colon (:).\n"));
399 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ "
400 "properties must be appended with\n"
401 "a user or group specifier of one of these forms:\n"
402 " POSIX name (eg: \"matt\")\n"
403 " POSIX id (eg: \"126829\")\n"
404 " SMB name@domain (eg: \"matt@sun\")\n"
405 " SMB SID (eg: \"S-1-234-567-89\")\n"));
406 } else {
407 (void) fprintf(fp,
408 gettext("\nFor the property list, run: %s\n"),
409 "zfs set|get");
410 (void) fprintf(fp,
411 gettext("\nFor the delegated permission list, run: %s\n"),
412 "zfs allow|unallow");
413 }
414
415 /*
416 * See comments at end of main().
417 */
418 if (getenv("ZFS_ABORT") != NULL) {
419 (void) printf("dumping core by request\n");
420 abort();
421 }
422
423 exit(requested ? 0 : 2);
424 }
425
426 static int
parseprop(nvlist_t * props)427 parseprop(nvlist_t *props)
428 {
429 char *propname = optarg;
430 char *propval, *strval;
431
432 if ((propval = strchr(propname, '=')) == NULL) {
433 (void) fprintf(stderr, gettext("missing "
434 "'=' for -o option\n"));
435 return (-1);
436 }
437 *propval = '\0';
438 propval++;
439 if (nvlist_lookup_string(props, propname, &strval) == 0) {
440 (void) fprintf(stderr, gettext("property '%s' "
441 "specified multiple times\n"), propname);
442 return (-1);
443 }
444 if (nvlist_add_string(props, propname, propval) != 0) {
445 (void) fprintf(stderr, gettext("internal "
446 "error: out of memory\n"));
447 return (-1);
448 }
449 return (0);
450 }
451
452 static int
parse_depth(char * opt,int * flags)453 parse_depth(char *opt, int *flags)
454 {
455 char *tmp;
456 int depth;
457
458 depth = (int)strtol(opt, &tmp, 0);
459 if (*tmp) {
460 (void) fprintf(stderr,
461 gettext("%s is not an integer\n"), optarg);
462 usage(B_FALSE);
463 }
464 if (depth < 0) {
465 (void) fprintf(stderr,
466 gettext("Depth can not be negative.\n"));
467 usage(B_FALSE);
468 }
469 *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
470 return (depth);
471 }
472
473 /*
474 * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
475 *
476 * Given an existing dataset, create a writable copy whose initial contents
477 * are the same as the source. The newly created dataset maintains a
478 * dependency on the original; the original cannot be destroyed so long as
479 * the clone exists.
480 *
481 * The '-p' flag creates all the non-existing ancestors of the target first.
482 */
483 static int
zfs_do_clone(int argc,char ** argv)484 zfs_do_clone(int argc, char **argv)
485 {
486 zfs_handle_t *zhp = NULL;
487 boolean_t parents = B_FALSE;
488 nvlist_t *props;
489 int ret;
490 int c;
491
492 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
493 (void) fprintf(stderr, gettext("internal error: "
494 "out of memory\n"));
495 return (1);
496 }
497
498 /* check options */
499 while ((c = getopt(argc, argv, "o:p")) != -1) {
500 switch (c) {
501 case 'o':
502 if (parseprop(props))
503 return (1);
504 break;
505 case 'p':
506 parents = B_TRUE;
507 break;
508 case '?':
509 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
510 optopt);
511 goto usage;
512 }
513 }
514
515 argc -= optind;
516 argv += optind;
517
518 /* check number of arguments */
519 if (argc < 1) {
520 (void) fprintf(stderr, gettext("missing source dataset "
521 "argument\n"));
522 goto usage;
523 }
524 if (argc < 2) {
525 (void) fprintf(stderr, gettext("missing target dataset "
526 "argument\n"));
527 goto usage;
528 }
529 if (argc > 2) {
530 (void) fprintf(stderr, gettext("too many arguments\n"));
531 goto usage;
532 }
533
534 /* open the source dataset */
535 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
536 return (1);
537
538 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
539 ZFS_TYPE_VOLUME)) {
540 /*
541 * Now create the ancestors of the target dataset. If the
542 * target already exists and '-p' option was used we should not
543 * complain.
544 */
545 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
546 ZFS_TYPE_VOLUME))
547 return (0);
548 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
549 return (1);
550 }
551
552 /* pass to libzfs */
553 ret = zfs_clone(zhp, argv[1], props);
554
555 /* create the mountpoint if necessary */
556 if (ret == 0) {
557 zfs_handle_t *clone;
558
559 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
560 if (clone != NULL) {
561 if ((ret = zfs_mount(clone, NULL, 0)) == 0)
562 ret = zfs_share(clone);
563 zfs_close(clone);
564 }
565 }
566
567 zfs_close(zhp);
568 nvlist_free(props);
569
570 return (!!ret);
571
572 usage:
573 if (zhp)
574 zfs_close(zhp);
575 nvlist_free(props);
576 usage(B_FALSE);
577 return (-1);
578 }
579
580 /*
581 * zfs create [-p] [-o prop=value] ... fs
582 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
583 *
584 * Create a new dataset. This command can be used to create filesystems
585 * and volumes. Snapshot creation is handled by 'zfs snapshot'.
586 * For volumes, the user must specify a size to be used.
587 *
588 * The '-s' flag applies only to volumes, and indicates that we should not try
589 * to set the reservation for this volume. By default we set a reservation
590 * equal to the size for any volume. For pools with SPA_VERSION >=
591 * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
592 *
593 * The '-p' flag creates all the non-existing ancestors of the target first.
594 */
595 static int
zfs_do_create(int argc,char ** argv)596 zfs_do_create(int argc, char **argv)
597 {
598 zfs_type_t type = ZFS_TYPE_FILESYSTEM;
599 zfs_handle_t *zhp = NULL;
600 uint64_t volsize;
601 int c;
602 boolean_t noreserve = B_FALSE;
603 boolean_t bflag = B_FALSE;
604 boolean_t parents = B_FALSE;
605 int ret = 1;
606 nvlist_t *props;
607 uint64_t intval;
608 int canmount;
609
610 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
611 (void) fprintf(stderr, gettext("internal error: "
612 "out of memory\n"));
613 return (1);
614 }
615
616 /* check options */
617 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) {
618 switch (c) {
619 case 'V':
620 type = ZFS_TYPE_VOLUME;
621 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
622 (void) fprintf(stderr, gettext("bad volume "
623 "size '%s': %s\n"), optarg,
624 libzfs_error_description(g_zfs));
625 goto error;
626 }
627
628 if (nvlist_add_uint64(props,
629 zfs_prop_to_name(ZFS_PROP_VOLSIZE),
630 intval) != 0) {
631 (void) fprintf(stderr, gettext("internal "
632 "error: out of memory\n"));
633 goto error;
634 }
635 volsize = intval;
636 break;
637 case 'p':
638 parents = B_TRUE;
639 break;
640 case 'b':
641 bflag = B_TRUE;
642 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
643 (void) fprintf(stderr, gettext("bad volume "
644 "block size '%s': %s\n"), optarg,
645 libzfs_error_description(g_zfs));
646 goto error;
647 }
648
649 if (nvlist_add_uint64(props,
650 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
651 intval) != 0) {
652 (void) fprintf(stderr, gettext("internal "
653 "error: out of memory\n"));
654 goto error;
655 }
656 break;
657 case 'o':
658 if (parseprop(props))
659 goto error;
660 break;
661 case 's':
662 noreserve = B_TRUE;
663 break;
664 case ':':
665 (void) fprintf(stderr, gettext("missing size "
666 "argument\n"));
667 goto badusage;
668 break;
669 case '?':
670 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
671 optopt);
672 goto badusage;
673 }
674 }
675
676 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
677 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
678 "used when creating a volume\n"));
679 goto badusage;
680 }
681
682 argc -= optind;
683 argv += optind;
684
685 /* check number of arguments */
686 if (argc == 0) {
687 (void) fprintf(stderr, gettext("missing %s argument\n"),
688 zfs_type_to_name(type));
689 goto badusage;
690 }
691 if (argc > 1) {
692 (void) fprintf(stderr, gettext("too many arguments\n"));
693 goto badusage;
694 }
695
696 if (type == ZFS_TYPE_VOLUME && !noreserve) {
697 zpool_handle_t *zpool_handle;
698 uint64_t spa_version;
699 char *p;
700 zfs_prop_t resv_prop;
701 char *strval;
702
703 if (p = strchr(argv[0], '/'))
704 *p = '\0';
705 zpool_handle = zpool_open(g_zfs, argv[0]);
706 if (p != NULL)
707 *p = '/';
708 if (zpool_handle == NULL)
709 goto error;
710 spa_version = zpool_get_prop_int(zpool_handle,
711 ZPOOL_PROP_VERSION, NULL);
712 zpool_close(zpool_handle);
713 if (spa_version >= SPA_VERSION_REFRESERVATION)
714 resv_prop = ZFS_PROP_REFRESERVATION;
715 else
716 resv_prop = ZFS_PROP_RESERVATION;
717 volsize = zvol_volsize_to_reservation(volsize, props);
718
719 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
720 &strval) != 0) {
721 if (nvlist_add_uint64(props,
722 zfs_prop_to_name(resv_prop), volsize) != 0) {
723 (void) fprintf(stderr, gettext("internal "
724 "error: out of memory\n"));
725 nvlist_free(props);
726 return (1);
727 }
728 }
729 }
730
731 if (parents && zfs_name_valid(argv[0], type)) {
732 /*
733 * Now create the ancestors of target dataset. If the target
734 * already exists and '-p' option was used we should not
735 * complain.
736 */
737 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
738 ret = 0;
739 goto error;
740 }
741 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
742 goto error;
743 }
744
745 /* pass to libzfs */
746 if (zfs_create(g_zfs, argv[0], type, props) != 0)
747 goto error;
748
749 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
750 goto error;
751 /*
752 * if the user doesn't want the dataset automatically mounted,
753 * then skip the mount/share step
754 */
755
756 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
757
758 /*
759 * Mount and/or share the new filesystem as appropriate. We provide a
760 * verbose error message to let the user know that their filesystem was
761 * in fact created, even if we failed to mount or share it.
762 */
763 ret = 0;
764 if (canmount == ZFS_CANMOUNT_ON) {
765 if (zfs_mount(zhp, NULL, 0) != 0) {
766 (void) fprintf(stderr, gettext("filesystem "
767 "successfully created, but not mounted\n"));
768 ret = 1;
769 } else if (zfs_share(zhp) != 0) {
770 (void) fprintf(stderr, gettext("filesystem "
771 "successfully created, but not shared\n"));
772 ret = 1;
773 }
774 }
775
776 error:
777 if (zhp)
778 zfs_close(zhp);
779 nvlist_free(props);
780 return (ret);
781 badusage:
782 nvlist_free(props);
783 usage(B_FALSE);
784 return (2);
785 }
786
787 /*
788 * zfs destroy [-rRf] <fs, vol>
789 * zfs destroy [-rRd] <snap>
790 *
791 * -r Recursively destroy all children
792 * -R Recursively destroy all dependents, including clones
793 * -f Force unmounting of any dependents
794 * -d If we can't destroy now, mark for deferred destruction
795 *
796 * Destroys the given dataset. By default, it will unmount any filesystems,
797 * and refuse to destroy a dataset that has any dependents. A dependent can
798 * either be a child, or a clone of a child.
799 */
800 typedef struct destroy_cbdata {
801 boolean_t cb_first;
802 int cb_force;
803 int cb_recurse;
804 int cb_error;
805 int cb_needforce;
806 int cb_doclones;
807 boolean_t cb_closezhp;
808 zfs_handle_t *cb_target;
809 char *cb_snapname;
810 boolean_t cb_defer_destroy;
811 } destroy_cbdata_t;
812
813 /*
814 * Check for any dependents based on the '-r' or '-R' flags.
815 */
816 static int
destroy_check_dependent(zfs_handle_t * zhp,void * data)817 destroy_check_dependent(zfs_handle_t *zhp, void *data)
818 {
819 destroy_cbdata_t *cbp = data;
820 const char *tname = zfs_get_name(cbp->cb_target);
821 const char *name = zfs_get_name(zhp);
822
823 if (strncmp(tname, name, strlen(tname)) == 0 &&
824 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
825 /*
826 * This is a direct descendant, not a clone somewhere else in
827 * the hierarchy.
828 */
829 if (cbp->cb_recurse)
830 goto out;
831
832 if (cbp->cb_first) {
833 (void) fprintf(stderr, gettext("cannot destroy '%s': "
834 "%s has children\n"),
835 zfs_get_name(cbp->cb_target),
836 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
837 (void) fprintf(stderr, gettext("use '-r' to destroy "
838 "the following datasets:\n"));
839 cbp->cb_first = B_FALSE;
840 cbp->cb_error = 1;
841 }
842
843 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
844 } else {
845 /*
846 * This is a clone. We only want to report this if the '-r'
847 * wasn't specified, or the target is a snapshot.
848 */
849 if (!cbp->cb_recurse &&
850 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
851 goto out;
852
853 if (cbp->cb_first) {
854 (void) fprintf(stderr, gettext("cannot destroy '%s': "
855 "%s has dependent clones\n"),
856 zfs_get_name(cbp->cb_target),
857 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
858 (void) fprintf(stderr, gettext("use '-R' to destroy "
859 "the following datasets:\n"));
860 cbp->cb_first = B_FALSE;
861 cbp->cb_error = 1;
862 }
863
864 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
865 }
866
867 out:
868 zfs_close(zhp);
869 return (0);
870 }
871
872 static int
destroy_callback(zfs_handle_t * zhp,void * data)873 destroy_callback(zfs_handle_t *zhp, void *data)
874 {
875 destroy_cbdata_t *cbp = data;
876
877 /*
878 * Ignore pools (which we've already flagged as an error before getting
879 * here).
880 */
881 if (strchr(zfs_get_name(zhp), '/') == NULL &&
882 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
883 zfs_close(zhp);
884 return (0);
885 }
886
887 /*
888 * Bail out on the first error.
889 */
890 if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 ||
891 zfs_destroy(zhp, cbp->cb_defer_destroy) != 0) {
892 zfs_close(zhp);
893 return (-1);
894 }
895
896 zfs_close(zhp);
897 return (0);
898 }
899
900 static int
destroy_snap_clones(zfs_handle_t * zhp,void * arg)901 destroy_snap_clones(zfs_handle_t *zhp, void *arg)
902 {
903 destroy_cbdata_t *cbp = arg;
904 char thissnap[MAXPATHLEN];
905 zfs_handle_t *szhp;
906 boolean_t closezhp = cbp->cb_closezhp;
907 int rv;
908
909 (void) snprintf(thissnap, sizeof (thissnap),
910 "%s@%s", zfs_get_name(zhp), cbp->cb_snapname);
911
912 libzfs_print_on_error(g_zfs, B_FALSE);
913 szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT);
914 libzfs_print_on_error(g_zfs, B_TRUE);
915 if (szhp) {
916 /*
917 * Destroy any clones of this snapshot
918 */
919 if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback,
920 cbp) != 0) {
921 zfs_close(szhp);
922 if (closezhp)
923 zfs_close(zhp);
924 return (-1);
925 }
926 zfs_close(szhp);
927 }
928
929 cbp->cb_closezhp = B_TRUE;
930 rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg);
931 if (closezhp)
932 zfs_close(zhp);
933 return (rv);
934 }
935
936 static int
zfs_do_destroy(int argc,char ** argv)937 zfs_do_destroy(int argc, char **argv)
938 {
939 destroy_cbdata_t cb = { 0 };
940 int c;
941 zfs_handle_t *zhp;
942 char *cp;
943 zfs_type_t type = ZFS_TYPE_DATASET;
944
945 /* check options */
946 while ((c = getopt(argc, argv, "dfrR")) != -1) {
947 switch (c) {
948 case 'd':
949 cb.cb_defer_destroy = B_TRUE;
950 type = ZFS_TYPE_SNAPSHOT;
951 break;
952 case 'f':
953 cb.cb_force = 1;
954 break;
955 case 'r':
956 cb.cb_recurse = 1;
957 break;
958 case 'R':
959 cb.cb_recurse = 1;
960 cb.cb_doclones = 1;
961 break;
962 case '?':
963 default:
964 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
965 optopt);
966 usage(B_FALSE);
967 }
968 }
969
970 argc -= optind;
971 argv += optind;
972
973 /* check number of arguments */
974 if (argc == 0) {
975 (void) fprintf(stderr, gettext("missing path argument\n"));
976 usage(B_FALSE);
977 }
978 if (argc > 1) {
979 (void) fprintf(stderr, gettext("too many arguments\n"));
980 usage(B_FALSE);
981 }
982
983 /*
984 * If we are doing recursive destroy of a snapshot, then the
985 * named snapshot may not exist. Go straight to libzfs.
986 */
987 if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) {
988 int ret;
989
990 *cp = '\0';
991 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
992 return (1);
993 *cp = '@';
994 cp++;
995
996 if (cb.cb_doclones) {
997 boolean_t defer = cb.cb_defer_destroy;
998
999 /*
1000 * Temporarily ignore the defer_destroy setting since
1001 * it's not supported for clones.
1002 */
1003 cb.cb_defer_destroy = B_FALSE;
1004 cb.cb_snapname = cp;
1005 if (destroy_snap_clones(zhp, &cb) != 0) {
1006 zfs_close(zhp);
1007 return (1);
1008 }
1009 cb.cb_defer_destroy = defer;
1010 }
1011
1012 ret = zfs_destroy_snaps(zhp, cp, cb.cb_defer_destroy);
1013 zfs_close(zhp);
1014 if (ret) {
1015 (void) fprintf(stderr,
1016 gettext("no snapshots destroyed\n"));
1017 }
1018 return (ret != 0);
1019 }
1020
1021 /* Open the given dataset */
1022 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1023 return (1);
1024
1025 cb.cb_target = zhp;
1026
1027 /*
1028 * Perform an explicit check for pools before going any further.
1029 */
1030 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1031 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1032 (void) fprintf(stderr, gettext("cannot destroy '%s': "
1033 "operation does not apply to pools\n"),
1034 zfs_get_name(zhp));
1035 (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1036 "%s' to destroy all datasets in the pool\n"),
1037 zfs_get_name(zhp));
1038 (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1039 "to destroy the pool itself\n"), zfs_get_name(zhp));
1040 zfs_close(zhp);
1041 return (1);
1042 }
1043
1044 /*
1045 * Check for any dependents and/or clones.
1046 */
1047 cb.cb_first = B_TRUE;
1048 if (!cb.cb_doclones && !cb.cb_defer_destroy &&
1049 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1050 &cb) != 0) {
1051 zfs_close(zhp);
1052 return (1);
1053 }
1054
1055 if (cb.cb_error || (!cb.cb_defer_destroy &&
1056 (zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0))) {
1057 zfs_close(zhp);
1058 return (1);
1059 }
1060
1061 /*
1062 * Do the real thing. The callback will close the handle regardless of
1063 * whether it succeeds or not.
1064 */
1065
1066 if (destroy_callback(zhp, &cb) != 0)
1067 return (1);
1068
1069 return (0);
1070 }
1071
1072 static boolean_t
is_recvd_column(zprop_get_cbdata_t * cbp)1073 is_recvd_column(zprop_get_cbdata_t *cbp)
1074 {
1075 int i;
1076 zfs_get_column_t col;
1077
1078 for (i = 0; i < ZFS_GET_NCOLS &&
1079 (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1080 if (col == GET_COL_RECVD)
1081 return (B_TRUE);
1082 return (B_FALSE);
1083 }
1084
1085 /*
1086 * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1087 * < all | property[,property]... > < fs | snap | vol > ...
1088 *
1089 * -r recurse over any child datasets
1090 * -H scripted mode. Headers are stripped, and fields are separated
1091 * by tabs instead of spaces.
1092 * -o Set of fields to display. One of "name,property,value,
1093 * received,source". Default is "name,property,value,source".
1094 * "all" is an alias for all five.
1095 * -s Set of sources to allow. One of
1096 * "local,default,inherited,received,temporary,none". Default is
1097 * all six.
1098 * -p Display values in parsable (literal) format.
1099 *
1100 * Prints properties for the given datasets. The user can control which
1101 * columns to display as well as which property types to allow.
1102 */
1103
1104 /*
1105 * Invoked to display the properties for a single dataset.
1106 */
1107 static int
get_callback(zfs_handle_t * zhp,void * data)1108 get_callback(zfs_handle_t *zhp, void *data)
1109 {
1110 char buf[ZFS_MAXPROPLEN];
1111 char rbuf[ZFS_MAXPROPLEN];
1112 zprop_source_t sourcetype;
1113 char source[ZFS_MAXNAMELEN];
1114 zprop_get_cbdata_t *cbp = data;
1115 nvlist_t *user_props = zfs_get_user_props(zhp);
1116 zprop_list_t *pl = cbp->cb_proplist;
1117 nvlist_t *propval;
1118 char *strval;
1119 char *sourceval;
1120 boolean_t received = is_recvd_column(cbp);
1121
1122 for (; pl != NULL; pl = pl->pl_next) {
1123 char *recvdval = NULL;
1124 /*
1125 * Skip the special fake placeholder. This will also skip over
1126 * the name property when 'all' is specified.
1127 */
1128 if (pl->pl_prop == ZFS_PROP_NAME &&
1129 pl == cbp->cb_proplist)
1130 continue;
1131
1132 if (pl->pl_prop != ZPROP_INVAL) {
1133 if (zfs_prop_get(zhp, pl->pl_prop, buf,
1134 sizeof (buf), &sourcetype, source,
1135 sizeof (source),
1136 cbp->cb_literal) != 0) {
1137 if (pl->pl_all)
1138 continue;
1139 if (!zfs_prop_valid_for_type(pl->pl_prop,
1140 ZFS_TYPE_DATASET)) {
1141 (void) fprintf(stderr,
1142 gettext("No such property '%s'\n"),
1143 zfs_prop_to_name(pl->pl_prop));
1144 continue;
1145 }
1146 sourcetype = ZPROP_SRC_NONE;
1147 (void) strlcpy(buf, "-", sizeof (buf));
1148 }
1149
1150 if (received && (zfs_prop_get_recvd(zhp,
1151 zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1152 cbp->cb_literal) == 0))
1153 recvdval = rbuf;
1154
1155 zprop_print_one_property(zfs_get_name(zhp), cbp,
1156 zfs_prop_to_name(pl->pl_prop),
1157 buf, sourcetype, source, recvdval);
1158 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1159 sourcetype = ZPROP_SRC_LOCAL;
1160
1161 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1162 buf, sizeof (buf), cbp->cb_literal) != 0) {
1163 sourcetype = ZPROP_SRC_NONE;
1164 (void) strlcpy(buf, "-", sizeof (buf));
1165 }
1166
1167 zprop_print_one_property(zfs_get_name(zhp), cbp,
1168 pl->pl_user_prop, buf, sourcetype, source, NULL);
1169 } else {
1170 if (nvlist_lookup_nvlist(user_props,
1171 pl->pl_user_prop, &propval) != 0) {
1172 if (pl->pl_all)
1173 continue;
1174 sourcetype = ZPROP_SRC_NONE;
1175 strval = "-";
1176 } else {
1177 verify(nvlist_lookup_string(propval,
1178 ZPROP_VALUE, &strval) == 0);
1179 verify(nvlist_lookup_string(propval,
1180 ZPROP_SOURCE, &sourceval) == 0);
1181
1182 if (strcmp(sourceval,
1183 zfs_get_name(zhp)) == 0) {
1184 sourcetype = ZPROP_SRC_LOCAL;
1185 } else if (strcmp(sourceval,
1186 ZPROP_SOURCE_VAL_RECVD) == 0) {
1187 sourcetype = ZPROP_SRC_RECEIVED;
1188 } else {
1189 sourcetype = ZPROP_SRC_INHERITED;
1190 (void) strlcpy(source,
1191 sourceval, sizeof (source));
1192 }
1193 }
1194
1195 if (received && (zfs_prop_get_recvd(zhp,
1196 pl->pl_user_prop, rbuf, sizeof (rbuf),
1197 cbp->cb_literal) == 0))
1198 recvdval = rbuf;
1199
1200 zprop_print_one_property(zfs_get_name(zhp), cbp,
1201 pl->pl_user_prop, strval, sourcetype,
1202 source, recvdval);
1203 }
1204 }
1205
1206 return (0);
1207 }
1208
1209 static int
zfs_do_get(int argc,char ** argv)1210 zfs_do_get(int argc, char **argv)
1211 {
1212 zprop_get_cbdata_t cb = { 0 };
1213 int i, c, flags = 0;
1214 char *value, *fields;
1215 int ret;
1216 int limit = 0;
1217 zprop_list_t fake_name = { 0 };
1218
1219 /*
1220 * Set up default columns and sources.
1221 */
1222 cb.cb_sources = ZPROP_SRC_ALL;
1223 cb.cb_columns[0] = GET_COL_NAME;
1224 cb.cb_columns[1] = GET_COL_PROPERTY;
1225 cb.cb_columns[2] = GET_COL_VALUE;
1226 cb.cb_columns[3] = GET_COL_SOURCE;
1227 cb.cb_type = ZFS_TYPE_DATASET;
1228
1229 /* check options */
1230 while ((c = getopt(argc, argv, ":d:o:s:rHp")) != -1) {
1231 switch (c) {
1232 case 'p':
1233 cb.cb_literal = B_TRUE;
1234 break;
1235 case 'd':
1236 limit = parse_depth(optarg, &flags);
1237 break;
1238 case 'r':
1239 flags |= ZFS_ITER_RECURSE;
1240 break;
1241 case 'H':
1242 cb.cb_scripted = B_TRUE;
1243 break;
1244 case ':':
1245 (void) fprintf(stderr, gettext("missing argument for "
1246 "'%c' option\n"), optopt);
1247 usage(B_FALSE);
1248 break;
1249 case 'o':
1250 /*
1251 * Process the set of columns to display. We zero out
1252 * the structure to give us a blank slate.
1253 */
1254 bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1255 i = 0;
1256 while (*optarg != '\0') {
1257 static char *col_subopts[] =
1258 { "name", "property", "value", "received",
1259 "source", "all", NULL };
1260
1261 if (i == ZFS_GET_NCOLS) {
1262 (void) fprintf(stderr, gettext("too "
1263 "many fields given to -o "
1264 "option\n"));
1265 usage(B_FALSE);
1266 }
1267
1268 switch (getsubopt(&optarg, col_subopts,
1269 &value)) {
1270 case 0:
1271 cb.cb_columns[i++] = GET_COL_NAME;
1272 break;
1273 case 1:
1274 cb.cb_columns[i++] = GET_COL_PROPERTY;
1275 break;
1276 case 2:
1277 cb.cb_columns[i++] = GET_COL_VALUE;
1278 break;
1279 case 3:
1280 cb.cb_columns[i++] = GET_COL_RECVD;
1281 flags |= ZFS_ITER_RECVD_PROPS;
1282 break;
1283 case 4:
1284 cb.cb_columns[i++] = GET_COL_SOURCE;
1285 break;
1286 case 5:
1287 if (i > 0) {
1288 (void) fprintf(stderr,
1289 gettext("\"all\" conflicts "
1290 "with specific fields "
1291 "given to -o option\n"));
1292 usage(B_FALSE);
1293 }
1294 cb.cb_columns[0] = GET_COL_NAME;
1295 cb.cb_columns[1] = GET_COL_PROPERTY;
1296 cb.cb_columns[2] = GET_COL_VALUE;
1297 cb.cb_columns[3] = GET_COL_RECVD;
1298 cb.cb_columns[4] = GET_COL_SOURCE;
1299 flags |= ZFS_ITER_RECVD_PROPS;
1300 i = ZFS_GET_NCOLS;
1301 break;
1302 default:
1303 (void) fprintf(stderr,
1304 gettext("invalid column name "
1305 "'%s'\n"), value);
1306 usage(B_FALSE);
1307 }
1308 }
1309 break;
1310
1311 case 's':
1312 cb.cb_sources = 0;
1313 while (*optarg != '\0') {
1314 static char *source_subopts[] = {
1315 "local", "default", "inherited",
1316 "received", "temporary", "none",
1317 NULL };
1318
1319 switch (getsubopt(&optarg, source_subopts,
1320 &value)) {
1321 case 0:
1322 cb.cb_sources |= ZPROP_SRC_LOCAL;
1323 break;
1324 case 1:
1325 cb.cb_sources |= ZPROP_SRC_DEFAULT;
1326 break;
1327 case 2:
1328 cb.cb_sources |= ZPROP_SRC_INHERITED;
1329 break;
1330 case 3:
1331 cb.cb_sources |= ZPROP_SRC_RECEIVED;
1332 break;
1333 case 4:
1334 cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1335 break;
1336 case 5:
1337 cb.cb_sources |= ZPROP_SRC_NONE;
1338 break;
1339 default:
1340 (void) fprintf(stderr,
1341 gettext("invalid source "
1342 "'%s'\n"), value);
1343 usage(B_FALSE);
1344 }
1345 }
1346 break;
1347
1348 case '?':
1349 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1350 optopt);
1351 usage(B_FALSE);
1352 }
1353 }
1354
1355 argc -= optind;
1356 argv += optind;
1357
1358 if (argc < 1) {
1359 (void) fprintf(stderr, gettext("missing property "
1360 "argument\n"));
1361 usage(B_FALSE);
1362 }
1363
1364 fields = argv[0];
1365
1366 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1367 != 0)
1368 usage(B_FALSE);
1369
1370 argc--;
1371 argv++;
1372
1373 /*
1374 * As part of zfs_expand_proplist(), we keep track of the maximum column
1375 * width for each property. For the 'NAME' (and 'SOURCE') columns, we
1376 * need to know the maximum name length. However, the user likely did
1377 * not specify 'name' as one of the properties to fetch, so we need to
1378 * make sure we always include at least this property for
1379 * print_get_headers() to work properly.
1380 */
1381 if (cb.cb_proplist != NULL) {
1382 fake_name.pl_prop = ZFS_PROP_NAME;
1383 fake_name.pl_width = strlen(gettext("NAME"));
1384 fake_name.pl_next = cb.cb_proplist;
1385 cb.cb_proplist = &fake_name;
1386 }
1387
1388 cb.cb_first = B_TRUE;
1389
1390 /* run for each object */
1391 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET, 0,
1392 &cb.cb_proplist, limit, get_callback, &cb);
1393
1394 if (cb.cb_proplist == &fake_name)
1395 zprop_free_list(fake_name.pl_next);
1396 else
1397 zprop_free_list(cb.cb_proplist);
1398
1399 return (ret);
1400 }
1401
1402 /*
1403 * inherit [-rS] <property> <fs|vol> ...
1404 *
1405 * -r Recurse over all children
1406 * -S Revert to received value, if any
1407 *
1408 * For each dataset specified on the command line, inherit the given property
1409 * from its parent. Inheriting a property at the pool level will cause it to
1410 * use the default value. The '-r' flag will recurse over all children, and is
1411 * useful for setting a property on a hierarchy-wide basis, regardless of any
1412 * local modifications for each dataset.
1413 */
1414
1415 typedef struct inherit_cbdata {
1416 const char *cb_propname;
1417 boolean_t cb_received;
1418 } inherit_cbdata_t;
1419
1420 static int
inherit_recurse_cb(zfs_handle_t * zhp,void * data)1421 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1422 {
1423 inherit_cbdata_t *cb = data;
1424 zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
1425
1426 /*
1427 * If we're doing it recursively, then ignore properties that
1428 * are not valid for this type of dataset.
1429 */
1430 if (prop != ZPROP_INVAL &&
1431 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1432 return (0);
1433
1434 return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1435 }
1436
1437 static int
inherit_cb(zfs_handle_t * zhp,void * data)1438 inherit_cb(zfs_handle_t *zhp, void *data)
1439 {
1440 inherit_cbdata_t *cb = data;
1441
1442 return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1443 }
1444
1445 static int
zfs_do_inherit(int argc,char ** argv)1446 zfs_do_inherit(int argc, char **argv)
1447 {
1448 int c;
1449 zfs_prop_t prop;
1450 inherit_cbdata_t cb = { 0 };
1451 char *propname;
1452 int ret;
1453 int flags = 0;
1454 boolean_t received = B_FALSE;
1455
1456 /* check options */
1457 while ((c = getopt(argc, argv, "rS")) != -1) {
1458 switch (c) {
1459 case 'r':
1460 flags |= ZFS_ITER_RECURSE;
1461 break;
1462 case 'S':
1463 received = B_TRUE;
1464 break;
1465 case '?':
1466 default:
1467 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1468 optopt);
1469 usage(B_FALSE);
1470 }
1471 }
1472
1473 argc -= optind;
1474 argv += optind;
1475
1476 /* check number of arguments */
1477 if (argc < 1) {
1478 (void) fprintf(stderr, gettext("missing property argument\n"));
1479 usage(B_FALSE);
1480 }
1481 if (argc < 2) {
1482 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1483 usage(B_FALSE);
1484 }
1485
1486 propname = argv[0];
1487 argc--;
1488 argv++;
1489
1490 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1491 if (zfs_prop_readonly(prop)) {
1492 (void) fprintf(stderr, gettext(
1493 "%s property is read-only\n"),
1494 propname);
1495 return (1);
1496 }
1497 if (!zfs_prop_inheritable(prop) && !received) {
1498 (void) fprintf(stderr, gettext("'%s' property cannot "
1499 "be inherited\n"), propname);
1500 if (prop == ZFS_PROP_QUOTA ||
1501 prop == ZFS_PROP_RESERVATION ||
1502 prop == ZFS_PROP_REFQUOTA ||
1503 prop == ZFS_PROP_REFRESERVATION)
1504 (void) fprintf(stderr, gettext("use 'zfs set "
1505 "%s=none' to clear\n"), propname);
1506 return (1);
1507 }
1508 if (received && (prop == ZFS_PROP_VOLSIZE ||
1509 prop == ZFS_PROP_VERSION)) {
1510 (void) fprintf(stderr, gettext("'%s' property cannot "
1511 "be reverted to a received value\n"), propname);
1512 return (1);
1513 }
1514 } else if (!zfs_prop_user(propname)) {
1515 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1516 propname);
1517 usage(B_FALSE);
1518 }
1519
1520 cb.cb_propname = propname;
1521 cb.cb_received = received;
1522
1523 if (flags & ZFS_ITER_RECURSE) {
1524 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1525 NULL, NULL, 0, inherit_recurse_cb, &cb);
1526 } else {
1527 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1528 NULL, NULL, 0, inherit_cb, &cb);
1529 }
1530
1531 return (ret);
1532 }
1533
1534 typedef struct upgrade_cbdata {
1535 uint64_t cb_numupgraded;
1536 uint64_t cb_numsamegraded;
1537 uint64_t cb_numfailed;
1538 uint64_t cb_version;
1539 boolean_t cb_newer;
1540 boolean_t cb_foundone;
1541 char cb_lastfs[ZFS_MAXNAMELEN];
1542 } upgrade_cbdata_t;
1543
1544 static int
same_pool(zfs_handle_t * zhp,const char * name)1545 same_pool(zfs_handle_t *zhp, const char *name)
1546 {
1547 int len1 = strcspn(name, "/@");
1548 const char *zhname = zfs_get_name(zhp);
1549 int len2 = strcspn(zhname, "/@");
1550
1551 if (len1 != len2)
1552 return (B_FALSE);
1553 return (strncmp(name, zhname, len1) == 0);
1554 }
1555
1556 static int
upgrade_list_callback(zfs_handle_t * zhp,void * data)1557 upgrade_list_callback(zfs_handle_t *zhp, void *data)
1558 {
1559 upgrade_cbdata_t *cb = data;
1560 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1561
1562 /* list if it's old/new */
1563 if ((!cb->cb_newer && version < ZPL_VERSION) ||
1564 (cb->cb_newer && version > ZPL_VERSION)) {
1565 char *str;
1566 if (cb->cb_newer) {
1567 str = gettext("The following filesystems are "
1568 "formatted using a newer software version and\n"
1569 "cannot be accessed on the current system.\n\n");
1570 } else {
1571 str = gettext("The following filesystems are "
1572 "out of date, and can be upgraded. After being\n"
1573 "upgraded, these filesystems (and any 'zfs send' "
1574 "streams generated from\n"
1575 "subsequent snapshots) will no longer be "
1576 "accessible by older software versions.\n\n");
1577 }
1578
1579 if (!cb->cb_foundone) {
1580 (void) puts(str);
1581 (void) printf(gettext("VER FILESYSTEM\n"));
1582 (void) printf(gettext("--- ------------\n"));
1583 cb->cb_foundone = B_TRUE;
1584 }
1585
1586 (void) printf("%2u %s\n", version, zfs_get_name(zhp));
1587 }
1588
1589 return (0);
1590 }
1591
1592 static int
upgrade_set_callback(zfs_handle_t * zhp,void * data)1593 upgrade_set_callback(zfs_handle_t *zhp, void *data)
1594 {
1595 upgrade_cbdata_t *cb = data;
1596 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1597 int i;
1598 static struct { int zplver; int spaver; } table[] = {
1599 {ZPL_VERSION_FUID, SPA_VERSION_FUID},
1600 {ZPL_VERSION_USERSPACE, SPA_VERSION_USERSPACE},
1601 {0, 0}
1602 };
1603
1604
1605 for (i = 0; table[i].zplver; i++) {
1606 if (cb->cb_version >= table[i].zplver) {
1607 int spa_version;
1608
1609 if (zfs_spa_version(zhp, &spa_version) < 0)
1610 return (-1);
1611
1612 if (spa_version < table[i].spaver) {
1613 /* can't upgrade */
1614 (void) printf(gettext("%s: can not be "
1615 "upgraded; the pool version needs to first "
1616 "be upgraded\nto version %d\n\n"),
1617 zfs_get_name(zhp), table[i].spaver);
1618 cb->cb_numfailed++;
1619 return (0);
1620 }
1621 }
1622 }
1623
1624 /* upgrade */
1625 if (version < cb->cb_version) {
1626 char verstr[16];
1627 (void) snprintf(verstr, sizeof (verstr),
1628 "%llu", cb->cb_version);
1629 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
1630 /*
1631 * If they did "zfs upgrade -a", then we could
1632 * be doing ioctls to different pools. We need
1633 * to log this history once to each pool.
1634 */
1635 verify(zpool_stage_history(g_zfs, history_str) == 0);
1636 }
1637 if (zfs_prop_set(zhp, "version", verstr) == 0)
1638 cb->cb_numupgraded++;
1639 else
1640 cb->cb_numfailed++;
1641 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
1642 } else if (version > cb->cb_version) {
1643 /* can't downgrade */
1644 (void) printf(gettext("%s: can not be downgraded; "
1645 "it is already at version %u\n"),
1646 zfs_get_name(zhp), version);
1647 cb->cb_numfailed++;
1648 } else {
1649 cb->cb_numsamegraded++;
1650 }
1651 return (0);
1652 }
1653
1654 /*
1655 * zfs upgrade
1656 * zfs upgrade -v
1657 * zfs upgrade [-r] [-V <version>] <-a | filesystem>
1658 */
1659 static int
zfs_do_upgrade(int argc,char ** argv)1660 zfs_do_upgrade(int argc, char **argv)
1661 {
1662 boolean_t all = B_FALSE;
1663 boolean_t showversions = B_FALSE;
1664 int ret;
1665 upgrade_cbdata_t cb = { 0 };
1666 char c;
1667 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1668
1669 /* check options */
1670 while ((c = getopt(argc, argv, "rvV:a")) != -1) {
1671 switch (c) {
1672 case 'r':
1673 flags |= ZFS_ITER_RECURSE;
1674 break;
1675 case 'v':
1676 showversions = B_TRUE;
1677 break;
1678 case 'V':
1679 if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
1680 optarg, &cb.cb_version) != 0) {
1681 (void) fprintf(stderr,
1682 gettext("invalid version %s\n"), optarg);
1683 usage(B_FALSE);
1684 }
1685 break;
1686 case 'a':
1687 all = B_TRUE;
1688 break;
1689 case '?':
1690 default:
1691 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1692 optopt);
1693 usage(B_FALSE);
1694 }
1695 }
1696
1697 argc -= optind;
1698 argv += optind;
1699
1700 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
1701 usage(B_FALSE);
1702 if (showversions && (flags & ZFS_ITER_RECURSE || all ||
1703 cb.cb_version || argc))
1704 usage(B_FALSE);
1705 if ((all || argc) && (showversions))
1706 usage(B_FALSE);
1707 if (all && argc)
1708 usage(B_FALSE);
1709
1710 if (showversions) {
1711 /* Show info on available versions. */
1712 (void) printf(gettext("The following filesystem versions are "
1713 "supported:\n\n"));
1714 (void) printf(gettext("VER DESCRIPTION\n"));
1715 (void) printf("--- -----------------------------------------"
1716 "---------------\n");
1717 (void) printf(gettext(" 1 Initial ZFS filesystem version\n"));
1718 (void) printf(gettext(" 2 Enhanced directory entries\n"));
1719 (void) printf(gettext(" 3 Case insensitive and File system "
1720 "unique identifier (FUID)\n"));
1721 (void) printf(gettext(" 4 userquota, groupquota "
1722 "properties\n"));
1723 (void) printf(gettext("\nFor more information on a particular "
1724 "version, including supported releases, see:\n\n"));
1725 (void) printf("http://www.opensolaris.org/os/community/zfs/"
1726 "version/zpl/N\n\n");
1727 (void) printf(gettext("Where 'N' is the version number.\n"));
1728 ret = 0;
1729 } else if (argc || all) {
1730 /* Upgrade filesystems */
1731 if (cb.cb_version == 0)
1732 cb.cb_version = ZPL_VERSION;
1733 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
1734 NULL, NULL, 0, upgrade_set_callback, &cb);
1735 (void) printf(gettext("%llu filesystems upgraded\n"),
1736 cb.cb_numupgraded);
1737 if (cb.cb_numsamegraded) {
1738 (void) printf(gettext("%llu filesystems already at "
1739 "this version\n"),
1740 cb.cb_numsamegraded);
1741 }
1742 if (cb.cb_numfailed != 0)
1743 ret = 1;
1744 } else {
1745 /* List old-version filesytems */
1746 boolean_t found;
1747 (void) printf(gettext("This system is currently running "
1748 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
1749
1750 flags |= ZFS_ITER_RECURSE;
1751 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
1752 NULL, NULL, 0, upgrade_list_callback, &cb);
1753
1754 found = cb.cb_foundone;
1755 cb.cb_foundone = B_FALSE;
1756 cb.cb_newer = B_TRUE;
1757
1758 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
1759 NULL, NULL, 0, upgrade_list_callback, &cb);
1760
1761 if (!cb.cb_foundone && !found) {
1762 (void) printf(gettext("All filesystems are "
1763 "formatted with the current version.\n"));
1764 }
1765 }
1766
1767 return (ret);
1768 }
1769
1770 /*
1771 * zfs userspace
1772 */
1773 static int
userspace_cb(void * arg,const char * domain,uid_t rid,uint64_t space)1774 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
1775 {
1776 zfs_userquota_prop_t *typep = arg;
1777 zfs_userquota_prop_t p = *typep;
1778 char *name = NULL;
1779 char *ug, *propname;
1780 char namebuf[32];
1781 char sizebuf[32];
1782
1783 if (domain == NULL || domain[0] == '\0') {
1784 if (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) {
1785 struct group *g = getgrgid(rid);
1786 if (g)
1787 name = g->gr_name;
1788 } else {
1789 struct passwd *p = getpwuid(rid);
1790 if (p)
1791 name = p->pw_name;
1792 }
1793 }
1794
1795 if (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA)
1796 ug = "group";
1797 else
1798 ug = "user";
1799
1800 if (p == ZFS_PROP_USERUSED || p == ZFS_PROP_GROUPUSED)
1801 propname = "used";
1802 else
1803 propname = "quota";
1804
1805 if (name == NULL) {
1806 (void) snprintf(namebuf, sizeof (namebuf),
1807 "%llu", (longlong_t)rid);
1808 name = namebuf;
1809 }
1810 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
1811
1812 (void) printf("%s %s %s%c%s %s\n", propname, ug, domain,
1813 domain[0] ? '-' : ' ', name, sizebuf);
1814
1815 return (0);
1816 }
1817
1818 static int
zfs_do_userspace(int argc,char ** argv)1819 zfs_do_userspace(int argc, char **argv)
1820 {
1821 zfs_handle_t *zhp;
1822 zfs_userquota_prop_t p;
1823 int error;
1824
1825 /*
1826 * Try the python version. If the execv fails, we'll continue
1827 * and do a simplistic implementation.
1828 */
1829 (void) execv(pypath, argv-1);
1830
1831 (void) printf("internal error: %s not found\n"
1832 "falling back on built-in implementation, "
1833 "some features will not work\n", pypath);
1834
1835 if ((zhp = zfs_open(g_zfs, argv[argc-1], ZFS_TYPE_DATASET)) == NULL)
1836 return (1);
1837
1838 (void) printf("PROP TYPE NAME VALUE\n");
1839
1840 for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
1841 error = zfs_userspace(zhp, p, userspace_cb, &p);
1842 if (error)
1843 break;
1844 }
1845 return (error);
1846 }
1847
1848 /*
1849 * list [-r][-d max] [-H] [-o property[,property]...] [-t type[,type]...]
1850 * [-s property [-s property]...] [-S property [-S property]...]
1851 * <dataset> ...
1852 *
1853 * -r Recurse over all children
1854 * -d Limit recursion by depth.
1855 * -H Scripted mode; elide headers and separate columns by tabs
1856 * -o Control which fields to display.
1857 * -t Control which object types to display.
1858 * -s Specify sort columns, descending order.
1859 * -S Specify sort columns, ascending order.
1860 *
1861 * When given no arguments, lists all filesystems in the system.
1862 * Otherwise, list the specified datasets, optionally recursing down them if
1863 * '-r' is specified.
1864 */
1865 typedef struct list_cbdata {
1866 boolean_t cb_first;
1867 boolean_t cb_scripted;
1868 zprop_list_t *cb_proplist;
1869 } list_cbdata_t;
1870
1871 /*
1872 * Given a list of columns to display, output appropriate headers for each one.
1873 */
1874 static void
print_header(zprop_list_t * pl)1875 print_header(zprop_list_t *pl)
1876 {
1877 char headerbuf[ZFS_MAXPROPLEN];
1878 const char *header;
1879 int i;
1880 boolean_t first = B_TRUE;
1881 boolean_t right_justify;
1882
1883 for (; pl != NULL; pl = pl->pl_next) {
1884 if (!first) {
1885 (void) printf(" ");
1886 } else {
1887 first = B_FALSE;
1888 }
1889
1890 right_justify = B_FALSE;
1891 if (pl->pl_prop != ZPROP_INVAL) {
1892 header = zfs_prop_column_name(pl->pl_prop);
1893 right_justify = zfs_prop_align_right(pl->pl_prop);
1894 } else {
1895 for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
1896 headerbuf[i] = toupper(pl->pl_user_prop[i]);
1897 headerbuf[i] = '\0';
1898 header = headerbuf;
1899 }
1900
1901 if (pl->pl_next == NULL && !right_justify)
1902 (void) printf("%s", header);
1903 else if (right_justify)
1904 (void) printf("%*s", pl->pl_width, header);
1905 else
1906 (void) printf("%-*s", pl->pl_width, header);
1907 }
1908
1909 (void) printf("\n");
1910 }
1911
1912 /*
1913 * Given a dataset and a list of fields, print out all the properties according
1914 * to the described layout.
1915 */
1916 static void
print_dataset(zfs_handle_t * zhp,zprop_list_t * pl,boolean_t scripted)1917 print_dataset(zfs_handle_t *zhp, zprop_list_t *pl, boolean_t scripted)
1918 {
1919 boolean_t first = B_TRUE;
1920 char property[ZFS_MAXPROPLEN];
1921 nvlist_t *userprops = zfs_get_user_props(zhp);
1922 nvlist_t *propval;
1923 char *propstr;
1924 boolean_t right_justify;
1925 int width;
1926
1927 for (; pl != NULL; pl = pl->pl_next) {
1928 if (!first) {
1929 if (scripted)
1930 (void) printf("\t");
1931 else
1932 (void) printf(" ");
1933 } else {
1934 first = B_FALSE;
1935 }
1936
1937 if (pl->pl_prop != ZPROP_INVAL) {
1938 if (zfs_prop_get(zhp, pl->pl_prop, property,
1939 sizeof (property), NULL, NULL, 0, B_FALSE) != 0)
1940 propstr = "-";
1941 else
1942 propstr = property;
1943
1944 right_justify = zfs_prop_align_right(pl->pl_prop);
1945 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1946 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1947 property, sizeof (property), B_FALSE) != 0)
1948 propstr = "-";
1949 else
1950 propstr = property;
1951 right_justify = B_TRUE;
1952 } else {
1953 if (nvlist_lookup_nvlist(userprops,
1954 pl->pl_user_prop, &propval) != 0)
1955 propstr = "-";
1956 else
1957 verify(nvlist_lookup_string(propval,
1958 ZPROP_VALUE, &propstr) == 0);
1959 right_justify = B_FALSE;
1960 }
1961
1962 width = pl->pl_width;
1963
1964 /*
1965 * If this is being called in scripted mode, or if this is the
1966 * last column and it is left-justified, don't include a width
1967 * format specifier.
1968 */
1969 if (scripted || (pl->pl_next == NULL && !right_justify))
1970 (void) printf("%s", propstr);
1971 else if (right_justify)
1972 (void) printf("%*s", width, propstr);
1973 else
1974 (void) printf("%-*s", width, propstr);
1975 }
1976
1977 (void) printf("\n");
1978 }
1979
1980 /*
1981 * Generic callback function to list a dataset or snapshot.
1982 */
1983 static int
list_callback(zfs_handle_t * zhp,void * data)1984 list_callback(zfs_handle_t *zhp, void *data)
1985 {
1986 list_cbdata_t *cbp = data;
1987
1988 if (cbp->cb_first) {
1989 if (!cbp->cb_scripted)
1990 print_header(cbp->cb_proplist);
1991 cbp->cb_first = B_FALSE;
1992 }
1993
1994 print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted);
1995
1996 return (0);
1997 }
1998
1999 static int
zfs_do_list(int argc,char ** argv)2000 zfs_do_list(int argc, char **argv)
2001 {
2002 int c;
2003 boolean_t scripted = B_FALSE;
2004 static char default_fields[] =
2005 "name,used,available,referenced,mountpoint";
2006 int types = ZFS_TYPE_DATASET;
2007 boolean_t types_specified = B_FALSE;
2008 char *fields = NULL;
2009 list_cbdata_t cb = { 0 };
2010 char *value;
2011 int limit = 0;
2012 int ret;
2013 zfs_sort_column_t *sortcol = NULL;
2014 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
2015
2016 /* check options */
2017 while ((c = getopt(argc, argv, ":d:o:rt:Hs:S:")) != -1) {
2018 switch (c) {
2019 case 'o':
2020 fields = optarg;
2021 break;
2022 case 'd':
2023 limit = parse_depth(optarg, &flags);
2024 break;
2025 case 'r':
2026 flags |= ZFS_ITER_RECURSE;
2027 break;
2028 case 'H':
2029 scripted = B_TRUE;
2030 break;
2031 case 's':
2032 if (zfs_add_sort_column(&sortcol, optarg,
2033 B_FALSE) != 0) {
2034 (void) fprintf(stderr,
2035 gettext("invalid property '%s'\n"), optarg);
2036 usage(B_FALSE);
2037 }
2038 break;
2039 case 'S':
2040 if (zfs_add_sort_column(&sortcol, optarg,
2041 B_TRUE) != 0) {
2042 (void) fprintf(stderr,
2043 gettext("invalid property '%s'\n"), optarg);
2044 usage(B_FALSE);
2045 }
2046 break;
2047 case 't':
2048 types = 0;
2049 types_specified = B_TRUE;
2050 flags &= ~ZFS_ITER_PROP_LISTSNAPS;
2051 while (*optarg != '\0') {
2052 static char *type_subopts[] = { "filesystem",
2053 "volume", "snapshot", "all", NULL };
2054
2055 switch (getsubopt(&optarg, type_subopts,
2056 &value)) {
2057 case 0:
2058 types |= ZFS_TYPE_FILESYSTEM;
2059 break;
2060 case 1:
2061 types |= ZFS_TYPE_VOLUME;
2062 break;
2063 case 2:
2064 types |= ZFS_TYPE_SNAPSHOT;
2065 break;
2066 case 3:
2067 types = ZFS_TYPE_DATASET;
2068 break;
2069
2070 default:
2071 (void) fprintf(stderr,
2072 gettext("invalid type '%s'\n"),
2073 value);
2074 usage(B_FALSE);
2075 }
2076 }
2077 break;
2078 case ':':
2079 (void) fprintf(stderr, gettext("missing argument for "
2080 "'%c' option\n"), optopt);
2081 usage(B_FALSE);
2082 break;
2083 case '?':
2084 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2085 optopt);
2086 usage(B_FALSE);
2087 }
2088 }
2089
2090 argc -= optind;
2091 argv += optind;
2092
2093 if (fields == NULL)
2094 fields = default_fields;
2095
2096 /*
2097 * If "-o space" and no types were specified, don't display snapshots.
2098 */
2099 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
2100 types &= ~ZFS_TYPE_SNAPSHOT;
2101
2102 /*
2103 * If the user specifies '-o all', the zprop_get_list() doesn't
2104 * normally include the name of the dataset. For 'zfs list', we always
2105 * want this property to be first.
2106 */
2107 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
2108 != 0)
2109 usage(B_FALSE);
2110
2111 cb.cb_scripted = scripted;
2112 cb.cb_first = B_TRUE;
2113
2114 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
2115 limit, list_callback, &cb);
2116
2117 zprop_free_list(cb.cb_proplist);
2118 zfs_free_sort_columns(sortcol);
2119
2120 if (ret == 0 && cb.cb_first && !cb.cb_scripted)
2121 (void) printf(gettext("no datasets available\n"));
2122
2123 return (ret);
2124 }
2125
2126 /*
2127 * zfs rename <fs | snap | vol> <fs | snap | vol>
2128 * zfs rename -p <fs | vol> <fs | vol>
2129 * zfs rename -r <snap> <snap>
2130 *
2131 * Renames the given dataset to another of the same type.
2132 *
2133 * The '-p' flag creates all the non-existing ancestors of the target first.
2134 */
2135 /* ARGSUSED */
2136 static int
zfs_do_rename(int argc,char ** argv)2137 zfs_do_rename(int argc, char **argv)
2138 {
2139 zfs_handle_t *zhp;
2140 int c;
2141 int ret;
2142 boolean_t recurse = B_FALSE;
2143 boolean_t parents = B_FALSE;
2144
2145 /* check options */
2146 while ((c = getopt(argc, argv, "pr")) != -1) {
2147 switch (c) {
2148 case 'p':
2149 parents = B_TRUE;
2150 break;
2151 case 'r':
2152 recurse = B_TRUE;
2153 break;
2154 case '?':
2155 default:
2156 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2157 optopt);
2158 usage(B_FALSE);
2159 }
2160 }
2161
2162 argc -= optind;
2163 argv += optind;
2164
2165 /* check number of arguments */
2166 if (argc < 1) {
2167 (void) fprintf(stderr, gettext("missing source dataset "
2168 "argument\n"));
2169 usage(B_FALSE);
2170 }
2171 if (argc < 2) {
2172 (void) fprintf(stderr, gettext("missing target dataset "
2173 "argument\n"));
2174 usage(B_FALSE);
2175 }
2176 if (argc > 2) {
2177 (void) fprintf(stderr, gettext("too many arguments\n"));
2178 usage(B_FALSE);
2179 }
2180
2181 if (recurse && parents) {
2182 (void) fprintf(stderr, gettext("-p and -r options are mutually "
2183 "exclusive\n"));
2184 usage(B_FALSE);
2185 }
2186
2187 if (recurse && strchr(argv[0], '@') == 0) {
2188 (void) fprintf(stderr, gettext("source dataset for recursive "
2189 "rename must be a snapshot\n"));
2190 usage(B_FALSE);
2191 }
2192
2193 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM |
2194 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL)
2195 return (1);
2196
2197 /* If we were asked and the name looks good, try to create ancestors. */
2198 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
2199 zfs_create_ancestors(g_zfs, argv[1]) != 0) {
2200 zfs_close(zhp);
2201 return (1);
2202 }
2203
2204 ret = (zfs_rename(zhp, argv[1], recurse) != 0);
2205
2206 zfs_close(zhp);
2207 return (ret);
2208 }
2209
2210 /*
2211 * zfs promote <fs>
2212 *
2213 * Promotes the given clone fs to be the parent
2214 */
2215 /* ARGSUSED */
2216 static int
zfs_do_promote(int argc,char ** argv)2217 zfs_do_promote(int argc, char **argv)
2218 {
2219 zfs_handle_t *zhp;
2220 int ret;
2221
2222 /* check options */
2223 if (argc > 1 && argv[1][0] == '-') {
2224 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2225 argv[1][1]);
2226 usage(B_FALSE);
2227 }
2228
2229 /* check number of arguments */
2230 if (argc < 2) {
2231 (void) fprintf(stderr, gettext("missing clone filesystem"
2232 " argument\n"));
2233 usage(B_FALSE);
2234 }
2235 if (argc > 2) {
2236 (void) fprintf(stderr, gettext("too many arguments\n"));
2237 usage(B_FALSE);
2238 }
2239
2240 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
2241 if (zhp == NULL)
2242 return (1);
2243
2244 ret = (zfs_promote(zhp) != 0);
2245
2246
2247 zfs_close(zhp);
2248 return (ret);
2249 }
2250
2251 /*
2252 * zfs rollback [-rRf] <snapshot>
2253 *
2254 * -r Delete any intervening snapshots before doing rollback
2255 * -R Delete any snapshots and their clones
2256 * -f ignored for backwards compatability
2257 *
2258 * Given a filesystem, rollback to a specific snapshot, discarding any changes
2259 * since then and making it the active dataset. If more recent snapshots exist,
2260 * the command will complain unless the '-r' flag is given.
2261 */
2262 typedef struct rollback_cbdata {
2263 uint64_t cb_create;
2264 boolean_t cb_first;
2265 int cb_doclones;
2266 char *cb_target;
2267 int cb_error;
2268 boolean_t cb_recurse;
2269 boolean_t cb_dependent;
2270 } rollback_cbdata_t;
2271
2272 /*
2273 * Report any snapshots more recent than the one specified. Used when '-r' is
2274 * not specified. We reuse this same callback for the snapshot dependents - if
2275 * 'cb_dependent' is set, then this is a dependent and we should report it
2276 * without checking the transaction group.
2277 */
2278 static int
rollback_check(zfs_handle_t * zhp,void * data)2279 rollback_check(zfs_handle_t *zhp, void *data)
2280 {
2281 rollback_cbdata_t *cbp = data;
2282
2283 if (cbp->cb_doclones) {
2284 zfs_close(zhp);
2285 return (0);
2286 }
2287
2288 if (!cbp->cb_dependent) {
2289 if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 &&
2290 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT &&
2291 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) >
2292 cbp->cb_create) {
2293
2294 if (cbp->cb_first && !cbp->cb_recurse) {
2295 (void) fprintf(stderr, gettext("cannot "
2296 "rollback to '%s': more recent snapshots "
2297 "exist\n"),
2298 cbp->cb_target);
2299 (void) fprintf(stderr, gettext("use '-r' to "
2300 "force deletion of the following "
2301 "snapshots:\n"));
2302 cbp->cb_first = 0;
2303 cbp->cb_error = 1;
2304 }
2305
2306 if (cbp->cb_recurse) {
2307 cbp->cb_dependent = B_TRUE;
2308 if (zfs_iter_dependents(zhp, B_TRUE,
2309 rollback_check, cbp) != 0) {
2310 zfs_close(zhp);
2311 return (-1);
2312 }
2313 cbp->cb_dependent = B_FALSE;
2314 } else {
2315 (void) fprintf(stderr, "%s\n",
2316 zfs_get_name(zhp));
2317 }
2318 }
2319 } else {
2320 if (cbp->cb_first && cbp->cb_recurse) {
2321 (void) fprintf(stderr, gettext("cannot rollback to "
2322 "'%s': clones of previous snapshots exist\n"),
2323 cbp->cb_target);
2324 (void) fprintf(stderr, gettext("use '-R' to "
2325 "force deletion of the following clones and "
2326 "dependents:\n"));
2327 cbp->cb_first = 0;
2328 cbp->cb_error = 1;
2329 }
2330
2331 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
2332 }
2333
2334 zfs_close(zhp);
2335 return (0);
2336 }
2337
2338 static int
zfs_do_rollback(int argc,char ** argv)2339 zfs_do_rollback(int argc, char **argv)
2340 {
2341 int ret;
2342 int c;
2343 boolean_t force = B_FALSE;
2344 rollback_cbdata_t cb = { 0 };
2345 zfs_handle_t *zhp, *snap;
2346 char parentname[ZFS_MAXNAMELEN];
2347 char *delim;
2348
2349 /* check options */
2350 while ((c = getopt(argc, argv, "rRf")) != -1) {
2351 switch (c) {
2352 case 'r':
2353 cb.cb_recurse = 1;
2354 break;
2355 case 'R':
2356 cb.cb_recurse = 1;
2357 cb.cb_doclones = 1;
2358 break;
2359 case 'f':
2360 force = B_TRUE;
2361 break;
2362 case '?':
2363 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2364 optopt);
2365 usage(B_FALSE);
2366 }
2367 }
2368
2369 argc -= optind;
2370 argv += optind;
2371
2372 /* check number of arguments */
2373 if (argc < 1) {
2374 (void) fprintf(stderr, gettext("missing dataset argument\n"));
2375 usage(B_FALSE);
2376 }
2377 if (argc > 1) {
2378 (void) fprintf(stderr, gettext("too many arguments\n"));
2379 usage(B_FALSE);
2380 }
2381
2382 /* open the snapshot */
2383 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
2384 return (1);
2385
2386 /* open the parent dataset */
2387 (void) strlcpy(parentname, argv[0], sizeof (parentname));
2388 verify((delim = strrchr(parentname, '@')) != NULL);
2389 *delim = '\0';
2390 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
2391 zfs_close(snap);
2392 return (1);
2393 }
2394
2395 /*
2396 * Check for more recent snapshots and/or clones based on the presence
2397 * of '-r' and '-R'.
2398 */
2399 cb.cb_target = argv[0];
2400 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
2401 cb.cb_first = B_TRUE;
2402 cb.cb_error = 0;
2403 if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0)
2404 goto out;
2405
2406 if ((ret = cb.cb_error) != 0)
2407 goto out;
2408
2409 /*
2410 * Rollback parent to the given snapshot.
2411 */
2412 ret = zfs_rollback(zhp, snap, force);
2413
2414 out:
2415 zfs_close(snap);
2416 zfs_close(zhp);
2417
2418 if (ret == 0)
2419 return (0);
2420 else
2421 return (1);
2422 }
2423
2424 /*
2425 * zfs set property=value { fs | snap | vol } ...
2426 *
2427 * Sets the given property for all datasets specified on the command line.
2428 */
2429 typedef struct set_cbdata {
2430 char *cb_propname;
2431 char *cb_value;
2432 } set_cbdata_t;
2433
2434 static int
set_callback(zfs_handle_t * zhp,void * data)2435 set_callback(zfs_handle_t *zhp, void *data)
2436 {
2437 set_cbdata_t *cbp = data;
2438
2439 if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) {
2440 switch (libzfs_errno(g_zfs)) {
2441 case EZFS_MOUNTFAILED:
2442 (void) fprintf(stderr, gettext("property may be set "
2443 "but unable to remount filesystem\n"));
2444 break;
2445 case EZFS_SHARENFSFAILED:
2446 (void) fprintf(stderr, gettext("property may be set "
2447 "but unable to reshare filesystem\n"));
2448 break;
2449 }
2450 return (1);
2451 }
2452 return (0);
2453 }
2454
2455 static int
zfs_do_set(int argc,char ** argv)2456 zfs_do_set(int argc, char **argv)
2457 {
2458 set_cbdata_t cb;
2459 int ret;
2460
2461 /* check for options */
2462 if (argc > 1 && argv[1][0] == '-') {
2463 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2464 argv[1][1]);
2465 usage(B_FALSE);
2466 }
2467
2468 /* check number of arguments */
2469 if (argc < 2) {
2470 (void) fprintf(stderr, gettext("missing property=value "
2471 "argument\n"));
2472 usage(B_FALSE);
2473 }
2474 if (argc < 3) {
2475 (void) fprintf(stderr, gettext("missing dataset name\n"));
2476 usage(B_FALSE);
2477 }
2478
2479 /* validate property=value argument */
2480 cb.cb_propname = argv[1];
2481 if (((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) ||
2482 (cb.cb_value[1] == '\0')) {
2483 (void) fprintf(stderr, gettext("missing value in "
2484 "property=value argument\n"));
2485 usage(B_FALSE);
2486 }
2487
2488 *cb.cb_value = '\0';
2489 cb.cb_value++;
2490
2491 if (*cb.cb_propname == '\0') {
2492 (void) fprintf(stderr,
2493 gettext("missing property in property=value argument\n"));
2494 usage(B_FALSE);
2495 }
2496
2497 ret = zfs_for_each(argc - 2, argv + 2, 0,
2498 ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, &cb);
2499
2500 return (ret);
2501 }
2502
2503 /*
2504 * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
2505 *
2506 * Creates a snapshot with the given name. While functionally equivalent to
2507 * 'zfs create', it is a separate command to differentiate intent.
2508 */
2509 static int
zfs_do_snapshot(int argc,char ** argv)2510 zfs_do_snapshot(int argc, char **argv)
2511 {
2512 boolean_t recursive = B_FALSE;
2513 int ret;
2514 char c;
2515 nvlist_t *props;
2516
2517 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
2518 (void) fprintf(stderr, gettext("internal error: "
2519 "out of memory\n"));
2520 return (1);
2521 }
2522
2523 /* check options */
2524 while ((c = getopt(argc, argv, "ro:")) != -1) {
2525 switch (c) {
2526 case 'o':
2527 if (parseprop(props))
2528 return (1);
2529 break;
2530 case 'r':
2531 recursive = B_TRUE;
2532 break;
2533 case '?':
2534 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2535 optopt);
2536 goto usage;
2537 }
2538 }
2539
2540 argc -= optind;
2541 argv += optind;
2542
2543 /* check number of arguments */
2544 if (argc < 1) {
2545 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
2546 goto usage;
2547 }
2548 if (argc > 1) {
2549 (void) fprintf(stderr, gettext("too many arguments\n"));
2550 goto usage;
2551 }
2552
2553 ret = zfs_snapshot(g_zfs, argv[0], recursive, props);
2554 nvlist_free(props);
2555 if (ret && recursive)
2556 (void) fprintf(stderr, gettext("no snapshots were created\n"));
2557 return (ret != 0);
2558
2559 usage:
2560 nvlist_free(props);
2561 usage(B_FALSE);
2562 return (-1);
2563 }
2564
2565 /*
2566 * zfs send [-vDp] -R [-i|-I <@snap>] <fs@snap>
2567 * zfs send [-vDp] [-i|-I <@snap>] <fs@snap>
2568 *
2569 * Send a backup stream to stdout.
2570 */
2571 static int
zfs_do_send(int argc,char ** argv)2572 zfs_do_send(int argc, char **argv)
2573 {
2574 char *fromname = NULL;
2575 char *toname = NULL;
2576 char *cp;
2577 zfs_handle_t *zhp;
2578 sendflags_t flags = { 0 };
2579 int c, err;
2580
2581 /* check options */
2582 while ((c = getopt(argc, argv, ":i:I:RDpv")) != -1) {
2583 switch (c) {
2584 case 'i':
2585 if (fromname)
2586 usage(B_FALSE);
2587 fromname = optarg;
2588 break;
2589 case 'I':
2590 if (fromname)
2591 usage(B_FALSE);
2592 fromname = optarg;
2593 flags.doall = B_TRUE;
2594 break;
2595 case 'R':
2596 flags.replicate = B_TRUE;
2597 break;
2598 case 'p':
2599 flags.props = B_TRUE;
2600 break;
2601 case 'v':
2602 flags.verbose = B_TRUE;
2603 break;
2604 case 'D':
2605 flags.dedup = B_TRUE;
2606 break;
2607 case ':':
2608 (void) fprintf(stderr, gettext("missing argument for "
2609 "'%c' option\n"), optopt);
2610 usage(B_FALSE);
2611 break;
2612 case '?':
2613 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2614 optopt);
2615 usage(B_FALSE);
2616 }
2617 }
2618
2619 argc -= optind;
2620 argv += optind;
2621
2622 /* check number of arguments */
2623 if (argc < 1) {
2624 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
2625 usage(B_FALSE);
2626 }
2627 if (argc > 1) {
2628 (void) fprintf(stderr, gettext("too many arguments\n"));
2629 usage(B_FALSE);
2630 }
2631
2632 if (isatty(STDOUT_FILENO)) {
2633 (void) fprintf(stderr,
2634 gettext("Error: Stream can not be written to a terminal.\n"
2635 "You must redirect standard output.\n"));
2636 return (1);
2637 }
2638
2639 cp = strchr(argv[0], '@');
2640 if (cp == NULL) {
2641 (void) fprintf(stderr,
2642 gettext("argument must be a snapshot\n"));
2643 usage(B_FALSE);
2644 }
2645 *cp = '\0';
2646 toname = cp + 1;
2647 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
2648 if (zhp == NULL)
2649 return (1);
2650
2651 /*
2652 * If they specified the full path to the snapshot, chop off
2653 * everything except the short name of the snapshot, but special
2654 * case if they specify the origin.
2655 */
2656 if (fromname && (cp = strchr(fromname, '@')) != NULL) {
2657 char origin[ZFS_MAXNAMELEN];
2658 zprop_source_t src;
2659
2660 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
2661 origin, sizeof (origin), &src, NULL, 0, B_FALSE);
2662
2663 if (strcmp(origin, fromname) == 0) {
2664 fromname = NULL;
2665 flags.fromorigin = B_TRUE;
2666 } else {
2667 *cp = '\0';
2668 if (cp != fromname && strcmp(argv[0], fromname)) {
2669 (void) fprintf(stderr,
2670 gettext("incremental source must be "
2671 "in same filesystem\n"));
2672 usage(B_FALSE);
2673 }
2674 fromname = cp + 1;
2675 if (strchr(fromname, '@') || strchr(fromname, '/')) {
2676 (void) fprintf(stderr,
2677 gettext("invalid incremental source\n"));
2678 usage(B_FALSE);
2679 }
2680 }
2681 }
2682
2683 if (flags.replicate && fromname == NULL)
2684 flags.doall = B_TRUE;
2685
2686 err = zfs_send(zhp, fromname, toname, flags, STDOUT_FILENO, NULL, 0);
2687 zfs_close(zhp);
2688
2689 return (err != 0);
2690 }
2691
2692 /*
2693 * zfs receive [-denvF] <fs@snap>
2694 *
2695 * Restore a backup stream from stdin.
2696 */
2697 static int
zfs_do_receive(int argc,char ** argv)2698 zfs_do_receive(int argc, char **argv)
2699 {
2700 int c, err;
2701 recvflags_t flags = { 0 };
2702
2703 /* check options */
2704 while ((c = getopt(argc, argv, ":denuvF")) != -1) {
2705 switch (c) {
2706 case 'd':
2707 flags.isprefix = B_TRUE;
2708 break;
2709 case 'e':
2710 flags.isprefix = B_TRUE;
2711 flags.istail = B_TRUE;
2712 break;
2713 case 'n':
2714 flags.dryrun = B_TRUE;
2715 break;
2716 case 'u':
2717 flags.nomount = B_TRUE;
2718 break;
2719 case 'v':
2720 flags.verbose = B_TRUE;
2721 break;
2722 case 'F':
2723 flags.force = B_TRUE;
2724 break;
2725 case ':':
2726 (void) fprintf(stderr, gettext("missing argument for "
2727 "'%c' option\n"), optopt);
2728 usage(B_FALSE);
2729 break;
2730 case '?':
2731 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2732 optopt);
2733 usage(B_FALSE);
2734 }
2735 }
2736
2737 argc -= optind;
2738 argv += optind;
2739
2740 /* check number of arguments */
2741 if (argc < 1) {
2742 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
2743 usage(B_FALSE);
2744 }
2745 if (argc > 1) {
2746 (void) fprintf(stderr, gettext("too many arguments\n"));
2747 usage(B_FALSE);
2748 }
2749
2750 if (isatty(STDIN_FILENO)) {
2751 (void) fprintf(stderr,
2752 gettext("Error: Backup stream can not be read "
2753 "from a terminal.\n"
2754 "You must redirect standard input.\n"));
2755 return (1);
2756 }
2757
2758 err = zfs_receive(g_zfs, argv[0], flags, STDIN_FILENO, NULL);
2759
2760 return (err != 0);
2761 }
2762
2763 static int
zfs_do_hold_rele_impl(int argc,char ** argv,boolean_t holding)2764 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
2765 {
2766 int errors = 0;
2767 int i;
2768 const char *tag;
2769 boolean_t recursive = B_FALSE;
2770 boolean_t temphold = B_FALSE;
2771 const char *opts = holding ? "rt" : "r";
2772 int c;
2773
2774 /* check options */
2775 while ((c = getopt(argc, argv, opts)) != -1) {
2776 switch (c) {
2777 case 'r':
2778 recursive = B_TRUE;
2779 break;
2780 case 't':
2781 temphold = B_TRUE;
2782 break;
2783 case '?':
2784 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2785 optopt);
2786 usage(B_FALSE);
2787 }
2788 }
2789
2790 argc -= optind;
2791 argv += optind;
2792
2793 /* check number of arguments */
2794 if (argc < 2)
2795 usage(B_FALSE);
2796
2797 tag = argv[0];
2798 --argc;
2799 ++argv;
2800
2801 if (holding && tag[0] == '.') {
2802 /* tags starting with '.' are reserved for libzfs */
2803 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
2804 usage(B_FALSE);
2805 }
2806
2807 for (i = 0; i < argc; ++i) {
2808 zfs_handle_t *zhp;
2809 char parent[ZFS_MAXNAMELEN];
2810 const char *delim;
2811 char *path = argv[i];
2812
2813 delim = strchr(path, '@');
2814 if (delim == NULL) {
2815 (void) fprintf(stderr,
2816 gettext("'%s' is not a snapshot\n"), path);
2817 ++errors;
2818 continue;
2819 }
2820 (void) strncpy(parent, path, delim - path);
2821 parent[delim - path] = '\0';
2822
2823 zhp = zfs_open(g_zfs, parent,
2824 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
2825 if (zhp == NULL) {
2826 ++errors;
2827 continue;
2828 }
2829 if (holding) {
2830 if (zfs_hold(zhp, delim+1, tag, recursive,
2831 temphold, B_FALSE) != 0)
2832 ++errors;
2833 } else {
2834 if (zfs_release(zhp, delim+1, tag, recursive) != 0)
2835 ++errors;
2836 }
2837 zfs_close(zhp);
2838 }
2839
2840 return (errors != 0);
2841 }
2842
2843 /*
2844 * zfs hold [-r] [-t] <tag> <snap> ...
2845 *
2846 * -r Recursively hold
2847 * -t Temporary hold (hidden option)
2848 *
2849 * Apply a user-hold with the given tag to the list of snapshots.
2850 */
2851 static int
zfs_do_hold(int argc,char ** argv)2852 zfs_do_hold(int argc, char **argv)
2853 {
2854 return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
2855 }
2856
2857 /*
2858 * zfs release [-r] <tag> <snap> ...
2859 *
2860 * -r Recursively release
2861 *
2862 * Release a user-hold with the given tag from the list of snapshots.
2863 */
2864 static int
zfs_do_release(int argc,char ** argv)2865 zfs_do_release(int argc, char **argv)
2866 {
2867 return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
2868 }
2869
2870 typedef struct get_all_cbdata {
2871 zfs_handle_t **cb_handles;
2872 size_t cb_alloc;
2873 size_t cb_used;
2874 uint_t cb_types;
2875 boolean_t cb_verbose;
2876 } get_all_cbdata_t;
2877
2878 #define CHECK_SPINNER 30
2879 #define SPINNER_TIME 3 /* seconds */
2880 #define MOUNT_TIME 5 /* seconds */
2881
2882 static int
get_one_dataset(zfs_handle_t * zhp,void * data)2883 get_one_dataset(zfs_handle_t *zhp, void *data)
2884 {
2885 static char spin[] = { '-', '\\', '|', '/' };
2886 static int spinval = 0;
2887 static int spincheck = 0;
2888 static time_t last_spin_time = (time_t)0;
2889 get_all_cbdata_t *cbp = data;
2890 zfs_type_t type = zfs_get_type(zhp);
2891
2892 if (cbp->cb_verbose) {
2893 if (--spincheck < 0) {
2894 time_t now = time(NULL);
2895 if (last_spin_time + SPINNER_TIME < now) {
2896 (void) printf("\b%c", spin[spinval++ % 4]);
2897 (void) fflush(stdout);
2898 last_spin_time = now;
2899 }
2900 spincheck = CHECK_SPINNER;
2901 }
2902 }
2903
2904 /*
2905 * Interate over any nested datasets.
2906 */
2907 if (type == ZFS_TYPE_FILESYSTEM &&
2908 zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
2909 zfs_close(zhp);
2910 return (1);
2911 }
2912
2913 /*
2914 * Skip any datasets whose type does not match.
2915 */
2916 if ((type & cbp->cb_types) == 0) {
2917 zfs_close(zhp);
2918 return (0);
2919 }
2920
2921 if (cbp->cb_alloc == cbp->cb_used) {
2922 zfs_handle_t **handles;
2923
2924 if (cbp->cb_alloc == 0)
2925 cbp->cb_alloc = 64;
2926 else
2927 cbp->cb_alloc *= 2;
2928
2929 handles = safe_malloc(cbp->cb_alloc * sizeof (void *));
2930
2931 if (cbp->cb_handles) {
2932 bcopy(cbp->cb_handles, handles,
2933 cbp->cb_used * sizeof (void *));
2934 free(cbp->cb_handles);
2935 }
2936
2937 cbp->cb_handles = handles;
2938 }
2939
2940 cbp->cb_handles[cbp->cb_used++] = zhp;
2941
2942 return (0);
2943 }
2944
2945 static void
get_all_datasets(uint_t types,zfs_handle_t *** dslist,size_t * count,boolean_t verbose)2946 get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count,
2947 boolean_t verbose)
2948 {
2949 get_all_cbdata_t cb = { 0 };
2950 cb.cb_types = types;
2951 cb.cb_verbose = verbose;
2952
2953 if (verbose) {
2954 (void) printf("%s: *", gettext("Reading ZFS config"));
2955 (void) fflush(stdout);
2956 }
2957
2958 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
2959
2960 *dslist = cb.cb_handles;
2961 *count = cb.cb_used;
2962
2963 if (verbose) {
2964 (void) printf("\b%s\n", gettext("done."));
2965 }
2966 }
2967
2968 static int
dataset_cmp(const void * a,const void * b)2969 dataset_cmp(const void *a, const void *b)
2970 {
2971 zfs_handle_t **za = (zfs_handle_t **)a;
2972 zfs_handle_t **zb = (zfs_handle_t **)b;
2973 char mounta[MAXPATHLEN];
2974 char mountb[MAXPATHLEN];
2975 boolean_t gota, gotb;
2976
2977 if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0)
2978 verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta,
2979 sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0);
2980 if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0)
2981 verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb,
2982 sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0);
2983
2984 if (gota && gotb)
2985 return (strcmp(mounta, mountb));
2986
2987 if (gota)
2988 return (-1);
2989 if (gotb)
2990 return (1);
2991
2992 return (strcmp(zfs_get_name(a), zfs_get_name(b)));
2993 }
2994
2995 /*
2996 * Generic callback for sharing or mounting filesystems. Because the code is so
2997 * similar, we have a common function with an extra parameter to determine which
2998 * mode we are using.
2999 */
3000 #define OP_SHARE 0x1
3001 #define OP_MOUNT 0x2
3002
3003 /*
3004 * Share or mount a dataset.
3005 */
3006 static int
share_mount_one(zfs_handle_t * zhp,int op,int flags,char * protocol,boolean_t explicit,const char * options)3007 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
3008 boolean_t explicit, const char *options)
3009 {
3010 char mountpoint[ZFS_MAXPROPLEN];
3011 char shareopts[ZFS_MAXPROPLEN];
3012 char smbshareopts[ZFS_MAXPROPLEN];
3013 const char *cmdname = op == OP_SHARE ? "share" : "mount";
3014 struct mnttab mnt;
3015 uint64_t zoned, canmount;
3016 zfs_type_t type = zfs_get_type(zhp);
3017 boolean_t shared_nfs, shared_smb;
3018
3019 assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME));
3020
3021 if (type == ZFS_TYPE_FILESYSTEM) {
3022 /*
3023 * Check to make sure we can mount/share this dataset. If we
3024 * are in the global zone and the filesystem is exported to a
3025 * local zone, or if we are in a local zone and the
3026 * filesystem is not exported, then it is an error.
3027 */
3028 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
3029
3030 if (zoned && getzoneid() == GLOBAL_ZONEID) {
3031 if (!explicit)
3032 return (0);
3033
3034 (void) fprintf(stderr, gettext("cannot %s '%s': "
3035 "dataset is exported to a local zone\n"), cmdname,
3036 zfs_get_name(zhp));
3037 return (1);
3038
3039 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
3040 if (!explicit)
3041 return (0);
3042
3043 (void) fprintf(stderr, gettext("cannot %s '%s': "
3044 "permission denied\n"), cmdname,
3045 zfs_get_name(zhp));
3046 return (1);
3047 }
3048
3049 /*
3050 * Ignore any filesystems which don't apply to us. This
3051 * includes those with a legacy mountpoint, or those with
3052 * legacy share options.
3053 */
3054 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
3055 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
3056 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
3057 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
3058 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
3059 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
3060
3061 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
3062 strcmp(smbshareopts, "off") == 0) {
3063 if (!explicit)
3064 return (0);
3065
3066 (void) fprintf(stderr, gettext("cannot share '%s': "
3067 "legacy share\n"), zfs_get_name(zhp));
3068 (void) fprintf(stderr, gettext("use share(1M) to "
3069 "share this filesystem, or set "
3070 "sharenfs property on\n"));
3071 return (1);
3072 }
3073
3074 /*
3075 * We cannot share or mount legacy filesystems. If the
3076 * shareopts is non-legacy but the mountpoint is legacy, we
3077 * treat it as a legacy share.
3078 */
3079 if (strcmp(mountpoint, "legacy") == 0) {
3080 if (!explicit)
3081 return (0);
3082
3083 (void) fprintf(stderr, gettext("cannot %s '%s': "
3084 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
3085 (void) fprintf(stderr, gettext("use %s(1M) to "
3086 "%s this filesystem\n"), cmdname, cmdname);
3087 return (1);
3088 }
3089
3090 if (strcmp(mountpoint, "none") == 0) {
3091 if (!explicit)
3092 return (0);
3093
3094 (void) fprintf(stderr, gettext("cannot %s '%s': no "
3095 "mountpoint set\n"), cmdname, zfs_get_name(zhp));
3096 return (1);
3097 }
3098
3099 /*
3100 * canmount explicit outcome
3101 * on no pass through
3102 * on yes pass through
3103 * off no return 0
3104 * off yes display error, return 1
3105 * noauto no return 0
3106 * noauto yes pass through
3107 */
3108 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
3109 if (canmount == ZFS_CANMOUNT_OFF) {
3110 if (!explicit)
3111 return (0);
3112
3113 (void) fprintf(stderr, gettext("cannot %s '%s': "
3114 "'canmount' property is set to 'off'\n"), cmdname,
3115 zfs_get_name(zhp));
3116 return (1);
3117 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
3118 return (0);
3119 }
3120
3121 /*
3122 * At this point, we have verified that the mountpoint and/or
3123 * shareopts are appropriate for auto management. If the
3124 * filesystem is already mounted or shared, return (failing
3125 * for explicit requests); otherwise mount or share the
3126 * filesystem.
3127 */
3128 switch (op) {
3129 case OP_SHARE:
3130
3131 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
3132 shared_smb = zfs_is_shared_smb(zhp, NULL);
3133
3134 if (shared_nfs && shared_smb ||
3135 (shared_nfs && strcmp(shareopts, "on") == 0 &&
3136 strcmp(smbshareopts, "off") == 0) ||
3137 (shared_smb && strcmp(smbshareopts, "on") == 0 &&
3138 strcmp(shareopts, "off") == 0)) {
3139 if (!explicit)
3140 return (0);
3141
3142 (void) fprintf(stderr, gettext("cannot share "
3143 "'%s': filesystem already shared\n"),
3144 zfs_get_name(zhp));
3145 return (1);
3146 }
3147
3148 if (!zfs_is_mounted(zhp, NULL) &&
3149 zfs_mount(zhp, NULL, 0) != 0)
3150 return (1);
3151
3152 if (protocol == NULL) {
3153 if (zfs_shareall(zhp) != 0)
3154 return (1);
3155 } else if (strcmp(protocol, "nfs") == 0) {
3156 if (zfs_share_nfs(zhp))
3157 return (1);
3158 } else if (strcmp(protocol, "smb") == 0) {
3159 if (zfs_share_smb(zhp))
3160 return (1);
3161 } else {
3162 (void) fprintf(stderr, gettext("cannot share "
3163 "'%s': invalid share type '%s' "
3164 "specified\n"),
3165 zfs_get_name(zhp), protocol);
3166 return (1);
3167 }
3168
3169 break;
3170
3171 case OP_MOUNT:
3172 if (options == NULL)
3173 mnt.mnt_mntopts = "";
3174 else
3175 mnt.mnt_mntopts = (char *)options;
3176
3177 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
3178 zfs_is_mounted(zhp, NULL)) {
3179 if (!explicit)
3180 return (0);
3181
3182 (void) fprintf(stderr, gettext("cannot mount "
3183 "'%s': filesystem already mounted\n"),
3184 zfs_get_name(zhp));
3185 return (1);
3186 }
3187
3188 if (zfs_mount(zhp, options, flags) != 0)
3189 return (1);
3190 break;
3191 }
3192 } else {
3193 assert(op == OP_SHARE);
3194
3195 /*
3196 * Ignore any volumes that aren't shared.
3197 */
3198 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts,
3199 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
3200
3201 if (strcmp(shareopts, "off") == 0) {
3202 if (!explicit)
3203 return (0);
3204
3205 (void) fprintf(stderr, gettext("cannot share '%s': "
3206 "'shareiscsi' property not set\n"),
3207 zfs_get_name(zhp));
3208 (void) fprintf(stderr, gettext("set 'shareiscsi' "
3209 "property or use iscsitadm(1M) to share this "
3210 "volume\n"));
3211 return (1);
3212 }
3213
3214 if (zfs_is_shared_iscsi(zhp)) {
3215 if (!explicit)
3216 return (0);
3217
3218 (void) fprintf(stderr, gettext("cannot share "
3219 "'%s': volume already shared\n"),
3220 zfs_get_name(zhp));
3221 return (1);
3222 }
3223
3224 if (zfs_share_iscsi(zhp) != 0)
3225 return (1);
3226 }
3227
3228 return (0);
3229 }
3230
3231 /*
3232 * Reports progress in the form "(current/total)". Not thread-safe.
3233 */
3234 static void
report_mount_progress(int current,int total)3235 report_mount_progress(int current, int total)
3236 {
3237 static int len;
3238 static char *reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"
3239 "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b";
3240 static time_t last_progress_time;
3241 time_t now = time(NULL);
3242
3243 /* report 1..n instead of 0..n-1 */
3244 ++current;
3245
3246 /* display header if we're here for the first time */
3247 if (current == 1) {
3248 (void) printf(gettext("Mounting ZFS filesystems: "));
3249 len = 0;
3250 } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
3251 /* too soon to report again */
3252 return;
3253 }
3254
3255 last_progress_time = now;
3256
3257 /* back up to prepare for overwriting */
3258 if (len)
3259 (void) printf("%*.*s", len, len, reverse);
3260
3261 /* We put a newline at the end if this is the last one. */
3262 len = printf("(%d/%d)%s", current, total, current == total ? "\n" : "");
3263 (void) fflush(stdout);
3264 }
3265
3266 static void
append_options(char * mntopts,char * newopts)3267 append_options(char *mntopts, char *newopts)
3268 {
3269 int len = strlen(mntopts);
3270
3271 /* original length plus new string to append plus 1 for the comma */
3272 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
3273 (void) fprintf(stderr, gettext("the opts argument for "
3274 "'%c' option is too long (more than %d chars)\n"),
3275 "-o", MNT_LINE_MAX);
3276 usage(B_FALSE);
3277 }
3278
3279 if (*mntopts)
3280 mntopts[len++] = ',';
3281
3282 (void) strcpy(&mntopts[len], newopts);
3283 }
3284
3285 static int
share_mount(int op,int argc,char ** argv)3286 share_mount(int op, int argc, char **argv)
3287 {
3288 int do_all = 0;
3289 boolean_t verbose = B_FALSE;
3290 int c, ret = 0;
3291 char *options = NULL;
3292 int types, flags = 0;
3293
3294 /* check options */
3295 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
3296 != -1) {
3297 switch (c) {
3298 case 'a':
3299 do_all = 1;
3300 break;
3301 case 'v':
3302 verbose = B_TRUE;
3303 break;
3304 case 'o':
3305 if (*optarg == '\0') {
3306 (void) fprintf(stderr, gettext("empty mount "
3307 "options (-o) specified\n"));
3308 usage(B_FALSE);
3309 }
3310
3311 if (options == NULL)
3312 options = safe_malloc(MNT_LINE_MAX + 1);
3313
3314 /* option validation is done later */
3315 append_options(options, optarg);
3316 break;
3317
3318 case 'O':
3319 flags |= MS_OVERLAY;
3320 break;
3321 case ':':
3322 (void) fprintf(stderr, gettext("missing argument for "
3323 "'%c' option\n"), optopt);
3324 usage(B_FALSE);
3325 break;
3326 case '?':
3327 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3328 optopt);
3329 usage(B_FALSE);
3330 }
3331 }
3332
3333 argc -= optind;
3334 argv += optind;
3335
3336 /* check number of arguments */
3337 if (do_all) {
3338 zfs_handle_t **dslist = NULL;
3339 size_t i, count = 0;
3340 char *protocol = NULL;
3341
3342 if (op == OP_MOUNT) {
3343 types = ZFS_TYPE_FILESYSTEM;
3344 } else if (argc > 0) {
3345 if (strcmp(argv[0], "nfs") == 0 ||
3346 strcmp(argv[0], "smb") == 0) {
3347 types = ZFS_TYPE_FILESYSTEM;
3348 } else if (strcmp(argv[0], "iscsi") == 0) {
3349 types = ZFS_TYPE_VOLUME;
3350 } else {
3351 (void) fprintf(stderr, gettext("share type "
3352 "must be 'nfs', 'smb' or 'iscsi'\n"));
3353 usage(B_FALSE);
3354 }
3355 protocol = argv[0];
3356 argc--;
3357 argv++;
3358 } else {
3359 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
3360 }
3361
3362 if (argc != 0) {
3363 (void) fprintf(stderr, gettext("too many arguments\n"));
3364 usage(B_FALSE);
3365 }
3366
3367 get_all_datasets(types, &dslist, &count, verbose);
3368
3369 if (count == 0)
3370 return (0);
3371
3372 qsort(dslist, count, sizeof (void *), dataset_cmp);
3373
3374 for (i = 0; i < count; i++) {
3375 if (verbose)
3376 report_mount_progress(i, count);
3377
3378 if (share_mount_one(dslist[i], op, flags, protocol,
3379 B_FALSE, options) != 0)
3380 ret = 1;
3381 zfs_close(dslist[i]);
3382 }
3383
3384 free(dslist);
3385 } else if (argc == 0) {
3386 struct statvfs *sfs;
3387 int i, n;
3388
3389 if ((op == OP_SHARE) || (options != NULL)) {
3390 (void) fprintf(stderr, gettext("missing filesystem "
3391 "argument (specify -a for all)\n"));
3392 usage(B_FALSE);
3393 }
3394
3395 /*
3396 * When mount is given no arguments, go through /etc/mnttab and
3397 * display any active ZFS mounts. We hide any snapshots, since
3398 * they are controlled automatically.
3399 */
3400 if ((n = getmntinfo(&sfs, MNT_WAIT)) == 0) {
3401 fprintf(stderr, "getmntinfo(): %s\n", strerror(errno));
3402 return (0);
3403 }
3404 for (i = 0; i < n; i++) {
3405 if (strcmp(sfs[i].f_fstypename, MNTTYPE_ZFS) != 0 ||
3406 strchr(sfs[i].f_mntfromname, '@') != NULL)
3407 continue;
3408
3409 (void) printf("%-30s %s\n", sfs[i].f_mntfromname,
3410 sfs[i].f_mntonname);
3411 }
3412
3413 } else {
3414 zfs_handle_t *zhp;
3415
3416 types = ZFS_TYPE_FILESYSTEM;
3417 if (op == OP_SHARE)
3418 types |= ZFS_TYPE_VOLUME;
3419
3420 if (argc > 1) {
3421 (void) fprintf(stderr,
3422 gettext("too many arguments\n"));
3423 usage(B_FALSE);
3424 }
3425
3426 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) {
3427 ret = 1;
3428 } else {
3429 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
3430 options);
3431 zfs_close(zhp);
3432 }
3433 }
3434
3435 return (ret);
3436 }
3437
3438 /*
3439 * zfs mount -a [nfs | iscsi]
3440 * zfs mount filesystem
3441 *
3442 * Mount all filesystems, or mount the given filesystem.
3443 */
3444 static int
zfs_do_mount(int argc,char ** argv)3445 zfs_do_mount(int argc, char **argv)
3446 {
3447 return (share_mount(OP_MOUNT, argc, argv));
3448 }
3449
3450 /*
3451 * zfs share -a [nfs | iscsi | smb]
3452 * zfs share filesystem
3453 *
3454 * Share all filesystems, or share the given filesystem.
3455 */
3456 static int
zfs_do_share(int argc,char ** argv)3457 zfs_do_share(int argc, char **argv)
3458 {
3459 return (share_mount(OP_SHARE, argc, argv));
3460 }
3461
3462 typedef struct unshare_unmount_node {
3463 zfs_handle_t *un_zhp;
3464 char *un_mountp;
3465 uu_avl_node_t un_avlnode;
3466 } unshare_unmount_node_t;
3467
3468 /* ARGSUSED */
3469 static int
unshare_unmount_compare(const void * larg,const void * rarg,void * unused)3470 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
3471 {
3472 const unshare_unmount_node_t *l = larg;
3473 const unshare_unmount_node_t *r = rarg;
3474
3475 return (strcmp(l->un_mountp, r->un_mountp));
3476 }
3477
3478 /*
3479 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an
3480 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
3481 * and unmount it appropriately.
3482 */
3483 static int
unshare_unmount_path(int op,char * path,int flags,boolean_t is_manual)3484 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
3485 {
3486 zfs_handle_t *zhp;
3487 int ret;
3488 struct stat64 statbuf;
3489 struct mnttab entry, search = { 0 };
3490 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
3491 ino_t path_inode;
3492
3493 /*
3494 * Search for the path in /etc/mnttab. Rather than looking for the
3495 * specific path, which can be fooled by non-standard paths (i.e. ".."
3496 * or "//"), we stat() the path and search for the corresponding
3497 * (major,minor) device pair.
3498 */
3499 if (stat64(path, &statbuf) != 0) {
3500 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
3501 cmdname, path, strerror(errno));
3502 return (1);
3503 }
3504 path_inode = statbuf.st_ino;
3505
3506 /*
3507 * Search for the given (major,minor) pair in the mount table.
3508 */
3509 rewind(mnttab_file);
3510 search.mnt_mountp = path;
3511 if ((ret = getmntany(mnttab_file, &entry, &search)) == 0) {
3512 if (op == OP_SHARE) {
3513 (void) fprintf(stderr, gettext("cannot %s '%s': not "
3514 "currently mounted\n"), cmdname, path);
3515 return (1);
3516 }
3517 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
3518 path);
3519 if ((ret = umount2(path, flags)) != 0)
3520 (void) fprintf(stderr, gettext("%s: %s\n"), path,
3521 strerror(errno));
3522 return (ret != 0);
3523 }
3524
3525 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
3526 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
3527 "filesystem\n"), cmdname, path);
3528 return (1);
3529 }
3530
3531 if ((zhp = zfs_open(g_zfs, entry.mnt_special,
3532 ZFS_TYPE_FILESYSTEM)) == NULL)
3533 return (1);
3534
3535 ret = 1;
3536 if (stat64(entry.mnt_mountp, &statbuf) != 0) {
3537 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
3538 cmdname, path, strerror(errno));
3539 goto out;
3540 } else if (statbuf.st_ino != path_inode) {
3541 (void) fprintf(stderr, gettext("cannot "
3542 "%s '%s': not a mountpoint\n"), cmdname, path);
3543 goto out;
3544 }
3545
3546 if (op == OP_SHARE) {
3547 char nfs_mnt_prop[ZFS_MAXPROPLEN];
3548 char smbshare_prop[ZFS_MAXPROPLEN];
3549
3550 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
3551 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
3552 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
3553 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
3554
3555 if (strcmp(nfs_mnt_prop, "off") == 0 &&
3556 strcmp(smbshare_prop, "off") == 0) {
3557 (void) fprintf(stderr, gettext("cannot unshare "
3558 "'%s': legacy share\n"), path);
3559 (void) fprintf(stderr, gettext("use "
3560 "unshare(1M) to unshare this filesystem\n"));
3561 } else if (!zfs_is_shared(zhp)) {
3562 (void) fprintf(stderr, gettext("cannot unshare '%s': "
3563 "not currently shared\n"), path);
3564 } else {
3565 ret = zfs_unshareall_bypath(zhp, path);
3566 }
3567 } else {
3568 char mtpt_prop[ZFS_MAXPROPLEN];
3569
3570 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
3571 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
3572
3573 if (is_manual) {
3574 ret = zfs_unmount(zhp, NULL, flags);
3575 } else if (strcmp(mtpt_prop, "legacy") == 0) {
3576 (void) fprintf(stderr, gettext("cannot unmount "
3577 "'%s': legacy mountpoint\n"),
3578 zfs_get_name(zhp));
3579 (void) fprintf(stderr, gettext("use umount(1M) "
3580 "to unmount this filesystem\n"));
3581 } else {
3582 ret = zfs_unmountall(zhp, flags);
3583 }
3584 }
3585
3586 out:
3587 zfs_close(zhp);
3588
3589 return (ret != 0);
3590 }
3591
3592 /*
3593 * Generic callback for unsharing or unmounting a filesystem.
3594 */
3595 static int
unshare_unmount(int op,int argc,char ** argv)3596 unshare_unmount(int op, int argc, char **argv)
3597 {
3598 int do_all = 0;
3599 int flags = 0;
3600 int ret = 0;
3601 int types, c;
3602 zfs_handle_t *zhp;
3603 char nfsiscsi_mnt_prop[ZFS_MAXPROPLEN];
3604 char sharesmb[ZFS_MAXPROPLEN];
3605
3606 /* check options */
3607 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
3608 switch (c) {
3609 case 'a':
3610 do_all = 1;
3611 break;
3612 case 'f':
3613 flags = MS_FORCE;
3614 break;
3615 case '?':
3616 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3617 optopt);
3618 usage(B_FALSE);
3619 }
3620 }
3621
3622 argc -= optind;
3623 argv += optind;
3624
3625 if (do_all) {
3626 /*
3627 * We could make use of zfs_for_each() to walk all datasets in
3628 * the system, but this would be very inefficient, especially
3629 * since we would have to linearly search /etc/mnttab for each
3630 * one. Instead, do one pass through /etc/mnttab looking for
3631 * zfs entries and call zfs_unmount() for each one.
3632 *
3633 * Things get a little tricky if the administrator has created
3634 * mountpoints beneath other ZFS filesystems. In this case, we
3635 * have to unmount the deepest filesystems first. To accomplish
3636 * this, we place all the mountpoints in an AVL tree sorted by
3637 * the special type (dataset name), and walk the result in
3638 * reverse to make sure to get any snapshots first.
3639 */
3640 struct statvfs *sfs;
3641 int i, n;
3642 uu_avl_pool_t *pool;
3643 uu_avl_t *tree;
3644 unshare_unmount_node_t *node;
3645 uu_avl_index_t idx;
3646 uu_avl_walk_t *walk;
3647
3648 if (argc != 0) {
3649 (void) fprintf(stderr, gettext("too many arguments\n"));
3650 usage(B_FALSE);
3651 }
3652
3653 if ((pool = uu_avl_pool_create("unmount_pool",
3654 sizeof (unshare_unmount_node_t),
3655 offsetof(unshare_unmount_node_t, un_avlnode),
3656 unshare_unmount_compare,
3657 UU_DEFAULT)) == NULL) {
3658 (void) fprintf(stderr, gettext("internal error: "
3659 "out of memory\n"));
3660 exit(1);
3661 }
3662
3663 if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) {
3664 (void) fprintf(stderr, gettext("internal error: "
3665 "out of memory\n"));
3666 exit(1);
3667 }
3668
3669 rewind(mnttab_file);
3670 if ((n = getmntinfo(&sfs, MNT_WAIT)) == 0) {
3671 (void) fprintf(stderr, gettext("internal error: "
3672 "getmntinfo() failed\n"));
3673 exit(1);
3674 }
3675 for (i = 0; i < n; i++) {
3676
3677 /* ignore non-ZFS entries */
3678 if (strcmp(sfs[i].f_fstypename, MNTTYPE_ZFS) != 0)
3679 continue;
3680
3681 /* ignore snapshots */
3682 if (strchr(sfs[i].f_mntfromname, '@') != NULL)
3683 continue;
3684
3685 if ((zhp = zfs_open(g_zfs, sfs[i].f_mntfromname,
3686 ZFS_TYPE_FILESYSTEM)) == NULL) {
3687 ret = 1;
3688 continue;
3689 }
3690
3691 switch (op) {
3692 case OP_SHARE:
3693 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
3694 nfsiscsi_mnt_prop,
3695 sizeof (nfsiscsi_mnt_prop),
3696 NULL, NULL, 0, B_FALSE) == 0);
3697 if (strcmp(nfsiscsi_mnt_prop, "off") != 0)
3698 break;
3699 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
3700 nfsiscsi_mnt_prop,
3701 sizeof (nfsiscsi_mnt_prop),
3702 NULL, NULL, 0, B_FALSE) == 0);
3703 if (strcmp(nfsiscsi_mnt_prop, "off") == 0)
3704 continue;
3705 break;
3706 case OP_MOUNT:
3707 /* Ignore legacy mounts */
3708 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
3709 nfsiscsi_mnt_prop,
3710 sizeof (nfsiscsi_mnt_prop),
3711 NULL, NULL, 0, B_FALSE) == 0);
3712 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0)
3713 continue;
3714 /* Ignore canmount=noauto mounts */
3715 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
3716 ZFS_CANMOUNT_NOAUTO)
3717 continue;
3718 default:
3719 break;
3720 }
3721
3722 node = safe_malloc(sizeof (unshare_unmount_node_t));
3723 node->un_zhp = zhp;
3724
3725 if ((node->un_mountp = strdup(sfs[i].f_mntonname)) ==
3726 NULL) {
3727 (void) fprintf(stderr, gettext("internal error:"
3728 " out of memory\n"));
3729 exit(1);
3730 }
3731
3732 uu_avl_node_init(node, &node->un_avlnode, pool);
3733
3734 if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
3735 uu_avl_insert(tree, node, idx);
3736 } else {
3737 zfs_close(node->un_zhp);
3738 free(node->un_mountp);
3739 free(node);
3740 }
3741 }
3742
3743 /*
3744 * Walk the AVL tree in reverse, unmounting each filesystem and
3745 * removing it from the AVL tree in the process.
3746 */
3747 if ((walk = uu_avl_walk_start(tree,
3748 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) {
3749 (void) fprintf(stderr,
3750 gettext("internal error: out of memory"));
3751 exit(1);
3752 }
3753
3754 while ((node = uu_avl_walk_next(walk)) != NULL) {
3755 uu_avl_remove(tree, node);
3756
3757 switch (op) {
3758 case OP_SHARE:
3759 if (zfs_unshareall_bypath(node->un_zhp,
3760 node->un_mountp) != 0)
3761 ret = 1;
3762 break;
3763
3764 case OP_MOUNT:
3765 if (zfs_unmount(node->un_zhp,
3766 node->un_mountp, flags) != 0)
3767 ret = 1;
3768 break;
3769 }
3770
3771 zfs_close(node->un_zhp);
3772 free(node->un_mountp);
3773 free(node);
3774 }
3775
3776 uu_avl_walk_end(walk);
3777 uu_avl_destroy(tree);
3778 uu_avl_pool_destroy(pool);
3779
3780 if (op == OP_SHARE) {
3781 /*
3782 * Finally, unshare any volumes shared via iSCSI.
3783 */
3784 zfs_handle_t **dslist = NULL;
3785 size_t i, count = 0;
3786
3787 get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count,
3788 B_FALSE);
3789
3790 if (count != 0) {
3791 qsort(dslist, count, sizeof (void *),
3792 dataset_cmp);
3793
3794 for (i = 0; i < count; i++) {
3795 if (zfs_unshare_iscsi(dslist[i]) != 0)
3796 ret = 1;
3797 zfs_close(dslist[i]);
3798 }
3799
3800 free(dslist);
3801 }
3802 }
3803 } else {
3804 if (argc != 1) {
3805 if (argc == 0)
3806 (void) fprintf(stderr,
3807 gettext("missing filesystem argument\n"));
3808 else
3809 (void) fprintf(stderr,
3810 gettext("too many arguments\n"));
3811 usage(B_FALSE);
3812 }
3813
3814 /*
3815 * We have an argument, but it may be a full path or a ZFS
3816 * filesystem. Pass full paths off to unmount_path() (shared by
3817 * manual_unmount), otherwise open the filesystem and pass to
3818 * zfs_unmount().
3819 */
3820 if (argv[0][0] == '/')
3821 return (unshare_unmount_path(op, argv[0],
3822 flags, B_FALSE));
3823
3824 types = ZFS_TYPE_FILESYSTEM;
3825 if (op == OP_SHARE)
3826 types |= ZFS_TYPE_VOLUME;
3827
3828 if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
3829 return (1);
3830
3831 if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
3832 verify(zfs_prop_get(zhp, op == OP_SHARE ?
3833 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
3834 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop), NULL,
3835 NULL, 0, B_FALSE) == 0);
3836
3837 switch (op) {
3838 case OP_SHARE:
3839 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
3840 nfsiscsi_mnt_prop,
3841 sizeof (nfsiscsi_mnt_prop),
3842 NULL, NULL, 0, B_FALSE) == 0);
3843 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
3844 sharesmb, sizeof (sharesmb), NULL, NULL,
3845 0, B_FALSE) == 0);
3846
3847 if (strcmp(nfsiscsi_mnt_prop, "off") == 0 &&
3848 strcmp(sharesmb, "off") == 0) {
3849 (void) fprintf(stderr, gettext("cannot "
3850 "unshare '%s': legacy share\n"),
3851 zfs_get_name(zhp));
3852 (void) fprintf(stderr, gettext("use "
3853 "unshare(1M) to unshare this "
3854 "filesystem\n"));
3855 ret = 1;
3856 } else if (!zfs_is_shared(zhp)) {
3857 (void) fprintf(stderr, gettext("cannot "
3858 "unshare '%s': not currently "
3859 "shared\n"), zfs_get_name(zhp));
3860 ret = 1;
3861 } else if (zfs_unshareall(zhp) != 0) {
3862 ret = 1;
3863 }
3864 break;
3865
3866 case OP_MOUNT:
3867 if (strcmp(nfsiscsi_mnt_prop, "legacy") == 0) {
3868 (void) fprintf(stderr, gettext("cannot "
3869 "unmount '%s': legacy "
3870 "mountpoint\n"), zfs_get_name(zhp));
3871 (void) fprintf(stderr, gettext("use "
3872 "umount(1M) to unmount this "
3873 "filesystem\n"));
3874 ret = 1;
3875 } else if (!zfs_is_mounted(zhp, NULL)) {
3876 (void) fprintf(stderr, gettext("cannot "
3877 "unmount '%s': not currently "
3878 "mounted\n"),
3879 zfs_get_name(zhp));
3880 ret = 1;
3881 } else if (zfs_unmountall(zhp, flags) != 0) {
3882 ret = 1;
3883 }
3884 break;
3885 }
3886 } else {
3887 assert(op == OP_SHARE);
3888
3889 verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI,
3890 nfsiscsi_mnt_prop, sizeof (nfsiscsi_mnt_prop),
3891 NULL, NULL, 0, B_FALSE) == 0);
3892
3893 if (strcmp(nfsiscsi_mnt_prop, "off") == 0) {
3894 (void) fprintf(stderr, gettext("cannot unshare "
3895 "'%s': 'shareiscsi' property not set\n"),
3896 zfs_get_name(zhp));
3897 (void) fprintf(stderr, gettext("set "
3898 "'shareiscsi' property or use "
3899 "iscsitadm(1M) to share this volume\n"));
3900 ret = 1;
3901 } else if (!zfs_is_shared_iscsi(zhp)) {
3902 (void) fprintf(stderr, gettext("cannot "
3903 "unshare '%s': not currently shared\n"),
3904 zfs_get_name(zhp));
3905 ret = 1;
3906 } else if (zfs_unshare_iscsi(zhp) != 0) {
3907 ret = 1;
3908 }
3909 }
3910
3911 zfs_close(zhp);
3912 }
3913
3914 return (ret);
3915 }
3916
3917 /*
3918 * zfs unmount -a
3919 * zfs unmount filesystem
3920 *
3921 * Unmount all filesystems, or a specific ZFS filesystem.
3922 */
3923 static int
zfs_do_unmount(int argc,char ** argv)3924 zfs_do_unmount(int argc, char **argv)
3925 {
3926 return (unshare_unmount(OP_MOUNT, argc, argv));
3927 }
3928
3929 /*
3930 * zfs unshare -a
3931 * zfs unshare filesystem
3932 *
3933 * Unshare all filesystems, or a specific ZFS filesystem.
3934 */
3935 static int
zfs_do_unshare(int argc,char ** argv)3936 zfs_do_unshare(int argc, char **argv)
3937 {
3938 return (unshare_unmount(OP_SHARE, argc, argv));
3939 }
3940
3941 /* ARGSUSED */
3942 static int
zfs_do_python(int argc,char ** argv)3943 zfs_do_python(int argc, char **argv)
3944 {
3945 (void) execv(pypath, argv-1);
3946 (void) printf("internal error: %s not found\n", pypath);
3947 return (-1);
3948 }
3949
3950 /*
3951 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is
3952 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'.
3953 */
3954 static int
manual_mount(int argc,char ** argv)3955 manual_mount(int argc, char **argv)
3956 {
3957 zfs_handle_t *zhp;
3958 char mountpoint[ZFS_MAXPROPLEN];
3959 char mntopts[MNT_LINE_MAX] = { '\0' };
3960 int ret;
3961 int c;
3962 int flags = 0;
3963 char *dataset, *path;
3964
3965 /* check options */
3966 while ((c = getopt(argc, argv, ":mo:O")) != -1) {
3967 switch (c) {
3968 case 'o':
3969 (void) strlcpy(mntopts, optarg, sizeof (mntopts));
3970 break;
3971 case 'O':
3972 flags |= MS_OVERLAY;
3973 break;
3974 case 'm':
3975 flags |= MS_NOMNTTAB;
3976 break;
3977 case ':':
3978 (void) fprintf(stderr, gettext("missing argument for "
3979 "'%c' option\n"), optopt);
3980 usage(B_FALSE);
3981 break;
3982 case '?':
3983 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3984 optopt);
3985 (void) fprintf(stderr, gettext("usage: mount [-o opts] "
3986 "<path>\n"));
3987 return (2);
3988 }
3989 }
3990
3991 argc -= optind;
3992 argv += optind;
3993
3994 /* check that we only have two arguments */
3995 if (argc != 2) {
3996 if (argc == 0)
3997 (void) fprintf(stderr, gettext("missing dataset "
3998 "argument\n"));
3999 else if (argc == 1)
4000 (void) fprintf(stderr,
4001 gettext("missing mountpoint argument\n"));
4002 else
4003 (void) fprintf(stderr, gettext("too many arguments\n"));
4004 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
4005 return (2);
4006 }
4007
4008 dataset = argv[0];
4009 path = argv[1];
4010
4011 /* try to open the dataset */
4012 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
4013 return (1);
4014
4015 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
4016 sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
4017
4018 /* check for legacy mountpoint and complain appropriately */
4019 ret = 0;
4020 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
4021 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS,
4022 NULL, 0, mntopts, sizeof (mntopts)) != 0) {
4023 (void) fprintf(stderr, gettext("mount failed: %s\n"),
4024 strerror(errno));
4025 ret = 1;
4026 }
4027 } else {
4028 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
4029 "mounted using 'mount -F zfs'\n"), dataset);
4030 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
4031 "instead.\n"), path);
4032 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' "
4033 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n"));
4034 (void) fprintf(stderr, gettext("See zfs(1M) for more "
4035 "information.\n"));
4036 ret = 1;
4037 }
4038
4039 return (ret);
4040 }
4041
4042 /*
4043 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow
4044 * unmounts of non-legacy filesystems, as this is the dominant administrative
4045 * interface.
4046 */
4047 static int
manual_unmount(int argc,char ** argv)4048 manual_unmount(int argc, char **argv)
4049 {
4050 int flags = 0;
4051 int c;
4052
4053 /* check options */
4054 while ((c = getopt(argc, argv, "f")) != -1) {
4055 switch (c) {
4056 case 'f':
4057 flags = MS_FORCE;
4058 break;
4059 case '?':
4060 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4061 optopt);
4062 (void) fprintf(stderr, gettext("usage: unmount [-f] "
4063 "<path>\n"));
4064 return (2);
4065 }
4066 }
4067
4068 argc -= optind;
4069 argv += optind;
4070
4071 /* check arguments */
4072 if (argc != 1) {
4073 if (argc == 0)
4074 (void) fprintf(stderr, gettext("missing path "
4075 "argument\n"));
4076 else
4077 (void) fprintf(stderr, gettext("too many arguments\n"));
4078 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
4079 return (2);
4080 }
4081
4082 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
4083 }
4084
4085 static int
find_command_idx(char * command,int * idx)4086 find_command_idx(char *command, int *idx)
4087 {
4088 int i;
4089
4090 for (i = 0; i < NCOMMAND; i++) {
4091 if (command_table[i].name == NULL)
4092 continue;
4093
4094 if (strcmp(command, command_table[i].name) == 0) {
4095 *idx = i;
4096 return (0);
4097 }
4098 }
4099 return (1);
4100 }
4101
4102 int
main(int argc,char ** argv)4103 main(int argc, char **argv)
4104 {
4105 int ret;
4106 int i;
4107 char *progname;
4108 char *cmdname;
4109
4110 (void) setlocale(LC_ALL, "");
4111 (void) textdomain(TEXT_DOMAIN);
4112
4113 opterr = 0;
4114
4115 if ((g_zfs = libzfs_init()) == NULL) {
4116 (void) fprintf(stderr, gettext("internal error: failed to "
4117 "initialize ZFS library\n"));
4118 return (1);
4119 }
4120
4121 zpool_set_history_str("zfs", argc, argv, history_str);
4122 verify(zpool_stage_history(g_zfs, history_str) == 0);
4123
4124 libzfs_print_on_error(g_zfs, B_TRUE);
4125
4126 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
4127 (void) fprintf(stderr, gettext("internal error: unable to "
4128 "open %s\n"), MNTTAB);
4129 return (1);
4130 }
4131
4132 /*
4133 * This command also doubles as the /etc/fs mount and unmount program.
4134 * Determine if we should take this behavior based on argv[0].
4135 */
4136 progname = basename(argv[0]);
4137 if (strcmp(progname, "mount") == 0) {
4138 ret = manual_mount(argc, argv);
4139 } else if (strcmp(progname, "umount") == 0) {
4140 ret = manual_unmount(argc, argv);
4141 } else {
4142 /*
4143 * Make sure the user has specified some command.
4144 */
4145 if (argc < 2) {
4146 (void) fprintf(stderr, gettext("missing command\n"));
4147 usage(B_FALSE);
4148 }
4149
4150 cmdname = argv[1];
4151
4152 /*
4153 * The 'umount' command is an alias for 'unmount'
4154 */
4155 if (strcmp(cmdname, "umount") == 0)
4156 cmdname = "unmount";
4157
4158 /*
4159 * The 'recv' command is an alias for 'receive'
4160 */
4161 if (strcmp(cmdname, "recv") == 0)
4162 cmdname = "receive";
4163
4164 /*
4165 * Special case '-?'
4166 */
4167 if (strcmp(cmdname, "-?") == 0)
4168 usage(B_TRUE);
4169
4170 /*
4171 * Run the appropriate command.
4172 */
4173 libzfs_mnttab_cache(g_zfs, B_TRUE);
4174 if (find_command_idx(cmdname, &i) == 0) {
4175 current_command = &command_table[i];
4176 ret = command_table[i].func(argc - 1, argv + 1);
4177 } else if (strchr(cmdname, '=') != NULL) {
4178 verify(find_command_idx("set", &i) == 0);
4179 current_command = &command_table[i];
4180 ret = command_table[i].func(argc, argv);
4181 } else {
4182 (void) fprintf(stderr, gettext("unrecognized "
4183 "command '%s'\n"), cmdname);
4184 usage(B_FALSE);
4185 }
4186 libzfs_mnttab_cache(g_zfs, B_FALSE);
4187 }
4188
4189 (void) fclose(mnttab_file);
4190
4191 libzfs_fini(g_zfs);
4192
4193 /*
4194 * The 'ZFS_ABORT' environment variable causes us to dump core on exit
4195 * for the purposes of running ::findleaks.
4196 */
4197 if (getenv("ZFS_ABORT") != NULL) {
4198 (void) printf("dumping core by request\n");
4199 abort();
4200 }
4201
4202 return (ret);
4203 }
4204