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5960 zfs recv should prefetch indirect blocks
[illumos-gate.git] / usr / src / cmd / zfs / zfs_main.c
blob1ed01b404810a01e663eeb24a522f888335b7bde
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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
25 * Copyright 2012 Milan Jurik. All rights reserved.
26 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
27 * Copyright (c) 2013 Steven Hartland. All rights reserved.
28 * Copyright 2013 Nexenta Systems, Inc. All rights reserved.
29 */
30
31 #include <assert.h>
32 #include <ctype.h>
33 #include <errno.h>
34 #include <libgen.h>
35 #include <libintl.h>
36 #include <libuutil.h>
37 #include <libnvpair.h>
38 #include <locale.h>
39 #include <stddef.h>
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <strings.h>
43 #include <unistd.h>
44 #include <fcntl.h>
45 #include <zone.h>
46 #include <grp.h>
47 #include <pwd.h>
48 #include <signal.h>
49 #include <sys/list.h>
50 #include <sys/mkdev.h>
51 #include <sys/mntent.h>
52 #include <sys/mnttab.h>
53 #include <sys/mount.h>
54 #include <sys/stat.h>
55 #include <sys/fs/zfs.h>
56 #include <sys/types.h>
57 #include <time.h>
58
59 #include <libzfs.h>
60 #include <libzfs_core.h>
61 #include <zfs_prop.h>
62 #include <zfs_deleg.h>
63 #include <libuutil.h>
64 #include <aclutils.h>
65 #include <directory.h>
66 #include <idmap.h>
67
68 #include "zfs_iter.h"
69 #include "zfs_util.h"
70 #include "zfs_comutil.h"
71
72 libzfs_handle_t *g_zfs;
73
74 static FILE *mnttab_file;
75 static char history_str[HIS_MAX_RECORD_LEN];
76 static boolean_t log_history = B_TRUE;
77
78 static int zfs_do_clone(int argc, char **argv);
79 static int zfs_do_create(int argc, char **argv);
80 static int zfs_do_destroy(int argc, char **argv);
81 static int zfs_do_get(int argc, char **argv);
82 static int zfs_do_inherit(int argc, char **argv);
83 static int zfs_do_list(int argc, char **argv);
84 static int zfs_do_mount(int argc, char **argv);
85 static int zfs_do_rename(int argc, char **argv);
86 static int zfs_do_rollback(int argc, char **argv);
87 static int zfs_do_set(int argc, char **argv);
88 static int zfs_do_upgrade(int argc, char **argv);
89 static int zfs_do_snapshot(int argc, char **argv);
90 static int zfs_do_unmount(int argc, char **argv);
91 static int zfs_do_share(int argc, char **argv);
92 static int zfs_do_unshare(int argc, char **argv);
93 static int zfs_do_send(int argc, char **argv);
94 static int zfs_do_receive(int argc, char **argv);
95 static int zfs_do_promote(int argc, char **argv);
96 static int zfs_do_userspace(int argc, char **argv);
97 static int zfs_do_allow(int argc, char **argv);
98 static int zfs_do_unallow(int argc, char **argv);
99 static int zfs_do_hold(int argc, char **argv);
100 static int zfs_do_holds(int argc, char **argv);
101 static int zfs_do_release(int argc, char **argv);
102 static int zfs_do_diff(int argc, char **argv);
103 static int zfs_do_bookmark(int argc, char **argv);
104
105 /*
106 * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
107 */
108
109 #ifdef DEBUG
110 const char *
111 _umem_debug_init(void)
112 {
113 return ("default,verbose"); /* $UMEM_DEBUG setting */
114 }
115
116 const char *
117 _umem_logging_init(void)
118 {
119 return ("fail,contents"); /* $UMEM_LOGGING setting */
120 }
121 #endif
122
123 typedef enum {
124 HELP_CLONE,
125 HELP_CREATE,
126 HELP_DESTROY,
127 HELP_GET,
128 HELP_INHERIT,
129 HELP_UPGRADE,
130 HELP_LIST,
131 HELP_MOUNT,
132 HELP_PROMOTE,
133 HELP_RECEIVE,
134 HELP_RENAME,
135 HELP_ROLLBACK,
136 HELP_SEND,
137 HELP_SET,
138 HELP_SHARE,
139 HELP_SNAPSHOT,
140 HELP_UNMOUNT,
141 HELP_UNSHARE,
142 HELP_ALLOW,
143 HELP_UNALLOW,
144 HELP_USERSPACE,
145 HELP_GROUPSPACE,
146 HELP_HOLD,
147 HELP_HOLDS,
148 HELP_RELEASE,
149 HELP_DIFF,
150 HELP_BOOKMARK,
151 } zfs_help_t;
152
153 typedef struct zfs_command {
154 const char *name;
155 int (*func)(int argc, char **argv);
156 zfs_help_t usage;
157 } zfs_command_t;
158
159 /*
160 * Master command table. Each ZFS command has a name, associated function, and
161 * usage message. The usage messages need to be internationalized, so we have
162 * to have a function to return the usage message based on a command index.
163 *
164 * These commands are organized according to how they are displayed in the usage
165 * message. An empty command (one with a NULL name) indicates an empty line in
166 * the generic usage message.
167 */
168 static zfs_command_t command_table[] = {
169 { "create", zfs_do_create, HELP_CREATE },
170 { "destroy", zfs_do_destroy, HELP_DESTROY },
171 { NULL },
172 { "snapshot", zfs_do_snapshot, HELP_SNAPSHOT },
173 { "rollback", zfs_do_rollback, HELP_ROLLBACK },
174 { "clone", zfs_do_clone, HELP_CLONE },
175 { "promote", zfs_do_promote, HELP_PROMOTE },
176 { "rename", zfs_do_rename, HELP_RENAME },
177 { "bookmark", zfs_do_bookmark, HELP_BOOKMARK },
178 { NULL },
179 { "list", zfs_do_list, HELP_LIST },
180 { NULL },
181 { "set", zfs_do_set, HELP_SET },
182 { "get", zfs_do_get, HELP_GET },
183 { "inherit", zfs_do_inherit, HELP_INHERIT },
184 { "upgrade", zfs_do_upgrade, HELP_UPGRADE },
185 { "userspace", zfs_do_userspace, HELP_USERSPACE },
186 { "groupspace", zfs_do_userspace, HELP_GROUPSPACE },
187 { NULL },
188 { "mount", zfs_do_mount, HELP_MOUNT },
189 { "unmount", zfs_do_unmount, HELP_UNMOUNT },
190 { "share", zfs_do_share, HELP_SHARE },
191 { "unshare", zfs_do_unshare, HELP_UNSHARE },
192 { NULL },
193 { "send", zfs_do_send, HELP_SEND },
194 { "receive", zfs_do_receive, HELP_RECEIVE },
195 { NULL },
196 { "allow", zfs_do_allow, HELP_ALLOW },
197 { NULL },
198 { "unallow", zfs_do_unallow, HELP_UNALLOW },
199 { NULL },
200 { "hold", zfs_do_hold, HELP_HOLD },
201 { "holds", zfs_do_holds, HELP_HOLDS },
202 { "release", zfs_do_release, HELP_RELEASE },
203 { "diff", zfs_do_diff, HELP_DIFF },
204 };
205
206 #define NCOMMAND (sizeof (command_table) / sizeof (command_table[0]))
207
208 zfs_command_t *current_command;
209
210 static const char *
211 get_usage(zfs_help_t idx)
212 {
213 switch (idx) {
214 case HELP_CLONE:
215 return (gettext("\tclone [-p] [-o property=value] ... "
216 "<snapshot> <filesystem|volume>\n"));
217 case HELP_CREATE:
218 return (gettext("\tcreate [-p] [-o property=value] ... "
219 "<filesystem>\n"
220 "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
221 "-V <size> <volume>\n"));
222 case HELP_DESTROY:
223 return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
224 "\tdestroy [-dnpRrv] "
225 "<filesystem|volume>@<snap>[%<snap>][,...]\n"
226 "\tdestroy <filesystem|volume>#<bookmark>\n"));
227 case HELP_GET:
228 return (gettext("\tget [-rHp] [-d max] "
229 "[-o \"all\" | field[,...]]\n"
230 "\t [-t type[,...]] [-s source[,...]]\n"
231 "\t <\"all\" | property[,...]> "
232 "[filesystem|volume|snapshot] ...\n"));
233 case HELP_INHERIT:
234 return (gettext("\tinherit [-rS] <property> "
235 "<filesystem|volume|snapshot> ...\n"));
236 case HELP_UPGRADE:
237 return (gettext("\tupgrade [-v]\n"
238 "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
239 case HELP_LIST:
240 return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
241 "[-s property]...\n\t [-S property]... [-t type[,...]] "
242 "[filesystem|volume|snapshot] ...\n"));
243 case HELP_MOUNT:
244 return (gettext("\tmount\n"
245 "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
246 case HELP_PROMOTE:
247 return (gettext("\tpromote <clone-filesystem>\n"));
248 case HELP_RECEIVE:
249 return (gettext("\treceive [-vnFu] <filesystem|volume|"
250 "snapshot>\n"
251 "\treceive [-vnFu] [-o origin=<snapshot>] [-d | -e] "
252 "<filesystem>\n"));
253 case HELP_RENAME:
254 return (gettext("\trename [-f] <filesystem|volume|snapshot> "
255 "<filesystem|volume|snapshot>\n"
256 "\trename [-f] -p <filesystem|volume> <filesystem|volume>\n"
257 "\trename -r <snapshot> <snapshot>\n"));
258 case HELP_ROLLBACK:
259 return (gettext("\trollback [-rRf] <snapshot>\n"));
260 case HELP_SEND:
261 return (gettext("\tsend [-DnPpRvLe] [-[iI] snapshot] "
262 "<snapshot>\n"
263 "\tsend [-Le] [-i snapshot|bookmark] "
264 "<filesystem|volume|snapshot>\n"));
265 case HELP_SET:
266 return (gettext("\tset <property=value> ... "
267 "<filesystem|volume|snapshot> ...\n"));
268 case HELP_SHARE:
269 return (gettext("\tshare <-a | filesystem>\n"));
270 case HELP_SNAPSHOT:
271 return (gettext("\tsnapshot [-r] [-o property=value] ... "
272 "<filesystem|volume>@<snap> ...\n"));
273 case HELP_UNMOUNT:
274 return (gettext("\tunmount [-f] "
275 "<-a | filesystem|mountpoint>\n"));
276 case HELP_UNSHARE:
277 return (gettext("\tunshare "
278 "<-a | filesystem|mountpoint>\n"));
279 case HELP_ALLOW:
280 return (gettext("\tallow <filesystem|volume>\n"
281 "\tallow [-ldug] "
282 "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
283 "\t <filesystem|volume>\n"
284 "\tallow [-ld] -e <perm|@setname>[,...] "
285 "<filesystem|volume>\n"
286 "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
287 "\tallow -s @setname <perm|@setname>[,...] "
288 "<filesystem|volume>\n"));
289 case HELP_UNALLOW:
290 return (gettext("\tunallow [-rldug] "
291 "<\"everyone\"|user|group>[,...]\n"
292 "\t [<perm|@setname>[,...]] <filesystem|volume>\n"
293 "\tunallow [-rld] -e [<perm|@setname>[,...]] "
294 "<filesystem|volume>\n"
295 "\tunallow [-r] -c [<perm|@setname>[,...]] "
296 "<filesystem|volume>\n"
297 "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
298 "<filesystem|volume>\n"));
299 case HELP_USERSPACE:
300 return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
301 "[-s field] ...\n"
302 "\t [-S field] ... [-t type[,...]] "
303 "<filesystem|snapshot>\n"));
304 case HELP_GROUPSPACE:
305 return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
306 "[-s field] ...\n"
307 "\t [-S field] ... [-t type[,...]] "
308 "<filesystem|snapshot>\n"));
309 case HELP_HOLD:
310 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
311 case HELP_HOLDS:
312 return (gettext("\tholds [-r] <snapshot> ...\n"));
313 case HELP_RELEASE:
314 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
315 case HELP_DIFF:
316 return (gettext("\tdiff [-FHt] <snapshot> "
317 "[snapshot|filesystem]\n"));
318 case HELP_BOOKMARK:
319 return (gettext("\tbookmark <snapshot> <bookmark>\n"));
320 }
321
322 abort();
323 /* NOTREACHED */
324 }
325
326 void
327 nomem(void)
328 {
329 (void) fprintf(stderr, gettext("internal error: out of memory\n"));
330 exit(1);
331 }
332
333 /*
334 * Utility function to guarantee malloc() success.
335 */
336
337 void *
338 safe_malloc(size_t size)
339 {
340 void *data;
341
342 if ((data = calloc(1, size)) == NULL)
343 nomem();
344
345 return (data);
346 }
347
348 static char *
349 safe_strdup(char *str)
350 {
351 char *dupstr = strdup(str);
352
353 if (dupstr == NULL)
354 nomem();
355
356 return (dupstr);
357 }
358
359 /*
360 * Callback routine that will print out information for each of
361 * the properties.
362 */
363 static int
364 usage_prop_cb(int prop, void *cb)
365 {
366 FILE *fp = cb;
367
368 (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
369
370 if (zfs_prop_readonly(prop))
371 (void) fprintf(fp, " NO ");
372 else
373 (void) fprintf(fp, "YES ");
374
375 if (zfs_prop_inheritable(prop))
376 (void) fprintf(fp, " YES ");
377 else
378 (void) fprintf(fp, " NO ");
379
380 if (zfs_prop_values(prop) == NULL)
381 (void) fprintf(fp, "-\n");
382 else
383 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
384
385 return (ZPROP_CONT);
386 }
387
388 /*
389 * Display usage message. If we're inside a command, display only the usage for
390 * that command. Otherwise, iterate over the entire command table and display
391 * a complete usage message.
392 */
393 static void
394 usage(boolean_t requested)
395 {
396 int i;
397 boolean_t show_properties = B_FALSE;
398 FILE *fp = requested ? stdout : stderr;
399
400 if (current_command == NULL) {
401
402 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
403 (void) fprintf(fp,
404 gettext("where 'command' is one of the following:\n\n"));
405
406 for (i = 0; i < NCOMMAND; i++) {
407 if (command_table[i].name == NULL)
408 (void) fprintf(fp, "\n");
409 else
410 (void) fprintf(fp, "%s",
411 get_usage(command_table[i].usage));
412 }
413
414 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
415 "pool/[dataset/]*dataset[@name]\n"));
416 } else {
417 (void) fprintf(fp, gettext("usage:\n"));
418 (void) fprintf(fp, "%s", get_usage(current_command->usage));
419 }
420
421 if (current_command != NULL &&
422 (strcmp(current_command->name, "set") == 0 ||
423 strcmp(current_command->name, "get") == 0 ||
424 strcmp(current_command->name, "inherit") == 0 ||
425 strcmp(current_command->name, "list") == 0))
426 show_properties = B_TRUE;
427
428 if (show_properties) {
429 (void) fprintf(fp,
430 gettext("\nThe following properties are supported:\n"));
431
432 (void) fprintf(fp, "\n\t%-14s %s %s %s\n\n",
433 "PROPERTY", "EDIT", "INHERIT", "VALUES");
434
435 /* Iterate over all properties */
436 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
437 ZFS_TYPE_DATASET);
438
439 (void) fprintf(fp, "\t%-15s ", "userused@...");
440 (void) fprintf(fp, " NO NO <size>\n");
441 (void) fprintf(fp, "\t%-15s ", "groupused@...");
442 (void) fprintf(fp, " NO NO <size>\n");
443 (void) fprintf(fp, "\t%-15s ", "userquota@...");
444 (void) fprintf(fp, "YES NO <size> | none\n");
445 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
446 (void) fprintf(fp, "YES NO <size> | none\n");
447 (void) fprintf(fp, "\t%-15s ", "written@<snap>");
448 (void) fprintf(fp, " NO NO <size>\n");
449
450 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
451 "with standard units such as K, M, G, etc.\n"));
452 (void) fprintf(fp, gettext("\nUser-defined properties can "
453 "be specified by using a name containing a colon (:).\n"));
454 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ "
455 "properties must be appended with\n"
456 "a user or group specifier of one of these forms:\n"
457 " POSIX name (eg: \"matt\")\n"
458 " POSIX id (eg: \"126829\")\n"
459 " SMB name@domain (eg: \"matt@sun\")\n"
460 " SMB SID (eg: \"S-1-234-567-89\")\n"));
461 } else {
462 (void) fprintf(fp,
463 gettext("\nFor the property list, run: %s\n"),
464 "zfs set|get");
465 (void) fprintf(fp,
466 gettext("\nFor the delegated permission list, run: %s\n"),
467 "zfs allow|unallow");
468 }
469
470 /*
471 * See comments at end of main().
472 */
473 if (getenv("ZFS_ABORT") != NULL) {
474 (void) printf("dumping core by request\n");
475 abort();
476 }
477
478 exit(requested ? 0 : 2);
479 }
480
481 /*
482 * Take a property=value argument string and add it to the given nvlist.
483 * Modifies the argument inplace.
484 */
485 static int
486 parseprop(nvlist_t *props, char *propname)
487 {
488 char *propval, *strval;
489
490 if ((propval = strchr(propname, '=')) == NULL) {
491 (void) fprintf(stderr, gettext("missing "
492 "'=' for property=value argument\n"));
493 return (-1);
494 }
495 *propval = '\0';
496 propval++;
497 if (nvlist_lookup_string(props, propname, &strval) == 0) {
498 (void) fprintf(stderr, gettext("property '%s' "
499 "specified multiple times\n"), propname);
500 return (-1);
501 }
502 if (nvlist_add_string(props, propname, propval) != 0)
503 nomem();
504 return (0);
505 }
506
507 static int
508 parse_depth(char *opt, int *flags)
509 {
510 char *tmp;
511 int depth;
512
513 depth = (int)strtol(opt, &tmp, 0);
514 if (*tmp) {
515 (void) fprintf(stderr,
516 gettext("%s is not an integer\n"), optarg);
517 usage(B_FALSE);
518 }
519 if (depth < 0) {
520 (void) fprintf(stderr,
521 gettext("Depth can not be negative.\n"));
522 usage(B_FALSE);
523 }
524 *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
525 return (depth);
526 }
527
528 #define PROGRESS_DELAY 2 /* seconds */
529
530 static char *pt_reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b";
531 static time_t pt_begin;
532 static char *pt_header = NULL;
533 static boolean_t pt_shown;
534
535 static void
536 start_progress_timer(void)
537 {
538 pt_begin = time(NULL) + PROGRESS_DELAY;
539 pt_shown = B_FALSE;
540 }
541
542 static void
543 set_progress_header(char *header)
544 {
545 assert(pt_header == NULL);
546 pt_header = safe_strdup(header);
547 if (pt_shown) {
548 (void) printf("%s: ", header);
549 (void) fflush(stdout);
550 }
551 }
552
553 static void
554 update_progress(char *update)
555 {
556 if (!pt_shown && time(NULL) > pt_begin) {
557 int len = strlen(update);
558
559 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
560 pt_reverse);
561 (void) fflush(stdout);
562 pt_shown = B_TRUE;
563 } else if (pt_shown) {
564 int len = strlen(update);
565
566 (void) printf("%s%*.*s", update, len, len, pt_reverse);
567 (void) fflush(stdout);
568 }
569 }
570
571 static void
572 finish_progress(char *done)
573 {
574 if (pt_shown) {
575 (void) printf("%s\n", done);
576 (void) fflush(stdout);
577 }
578 free(pt_header);
579 pt_header = NULL;
580 }
581
582 /*
583 * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
584 *
585 * Given an existing dataset, create a writable copy whose initial contents
586 * are the same as the source. The newly created dataset maintains a
587 * dependency on the original; the original cannot be destroyed so long as
588 * the clone exists.
589 *
590 * The '-p' flag creates all the non-existing ancestors of the target first.
591 */
592 static int
593 zfs_do_clone(int argc, char **argv)
594 {
595 zfs_handle_t *zhp = NULL;
596 boolean_t parents = B_FALSE;
597 nvlist_t *props;
598 int ret = 0;
599 int c;
600
601 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
602 nomem();
603
604 /* check options */
605 while ((c = getopt(argc, argv, "o:p")) != -1) {
606 switch (c) {
607 case 'o':
608 if (parseprop(props, optarg) != 0)
609 return (1);
610 break;
611 case 'p':
612 parents = B_TRUE;
613 break;
614 case '?':
615 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
616 optopt);
617 goto usage;
618 }
619 }
620
621 argc -= optind;
622 argv += optind;
623
624 /* check number of arguments */
625 if (argc < 1) {
626 (void) fprintf(stderr, gettext("missing source dataset "
627 "argument\n"));
628 goto usage;
629 }
630 if (argc < 2) {
631 (void) fprintf(stderr, gettext("missing target dataset "
632 "argument\n"));
633 goto usage;
634 }
635 if (argc > 2) {
636 (void) fprintf(stderr, gettext("too many arguments\n"));
637 goto usage;
638 }
639
640 /* open the source dataset */
641 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
642 return (1);
643
644 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
645 ZFS_TYPE_VOLUME)) {
646 /*
647 * Now create the ancestors of the target dataset. If the
648 * target already exists and '-p' option was used we should not
649 * complain.
650 */
651 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
652 ZFS_TYPE_VOLUME))
653 return (0);
654 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
655 return (1);
656 }
657
658 /* pass to libzfs */
659 ret = zfs_clone(zhp, argv[1], props);
660
661 /* create the mountpoint if necessary */
662 if (ret == 0) {
663 zfs_handle_t *clone;
664
665 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
666 if (clone != NULL) {
667 if (zfs_get_type(clone) != ZFS_TYPE_VOLUME)
668 if ((ret = zfs_mount(clone, NULL, 0)) == 0)
669 ret = zfs_share(clone);
670 zfs_close(clone);
671 }
672 }
673
674 zfs_close(zhp);
675 nvlist_free(props);
676
677 return (!!ret);
678
679 usage:
680 if (zhp)
681 zfs_close(zhp);
682 nvlist_free(props);
683 usage(B_FALSE);
684 return (-1);
685 }
686
687 /*
688 * zfs create [-p] [-o prop=value] ... fs
689 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
690 *
691 * Create a new dataset. This command can be used to create filesystems
692 * and volumes. Snapshot creation is handled by 'zfs snapshot'.
693 * For volumes, the user must specify a size to be used.
694 *
695 * The '-s' flag applies only to volumes, and indicates that we should not try
696 * to set the reservation for this volume. By default we set a reservation
697 * equal to the size for any volume. For pools with SPA_VERSION >=
698 * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
699 *
700 * The '-p' flag creates all the non-existing ancestors of the target first.
701 */
702 static int
703 zfs_do_create(int argc, char **argv)
704 {
705 zfs_type_t type = ZFS_TYPE_FILESYSTEM;
706 zfs_handle_t *zhp = NULL;
707 uint64_t volsize;
708 int c;
709 boolean_t noreserve = B_FALSE;
710 boolean_t bflag = B_FALSE;
711 boolean_t parents = B_FALSE;
712 int ret = 1;
713 nvlist_t *props;
714 uint64_t intval;
715 int canmount = ZFS_CANMOUNT_OFF;
716
717 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
718 nomem();
719
720 /* check options */
721 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) {
722 switch (c) {
723 case 'V':
724 type = ZFS_TYPE_VOLUME;
725 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
726 (void) fprintf(stderr, gettext("bad volume "
727 "size '%s': %s\n"), optarg,
728 libzfs_error_description(g_zfs));
729 goto error;
730 }
731
732 if (nvlist_add_uint64(props,
733 zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
734 nomem();
735 volsize = intval;
736 break;
737 case 'p':
738 parents = B_TRUE;
739 break;
740 case 'b':
741 bflag = B_TRUE;
742 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
743 (void) fprintf(stderr, gettext("bad volume "
744 "block size '%s': %s\n"), optarg,
745 libzfs_error_description(g_zfs));
746 goto error;
747 }
748
749 if (nvlist_add_uint64(props,
750 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
751 intval) != 0)
752 nomem();
753 break;
754 case 'o':
755 if (parseprop(props, optarg) != 0)
756 goto error;
757 break;
758 case 's':
759 noreserve = B_TRUE;
760 break;
761 case ':':
762 (void) fprintf(stderr, gettext("missing size "
763 "argument\n"));
764 goto badusage;
765 case '?':
766 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
767 optopt);
768 goto badusage;
769 }
770 }
771
772 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
773 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
774 "used when creating a volume\n"));
775 goto badusage;
776 }
777
778 argc -= optind;
779 argv += optind;
780
781 /* check number of arguments */
782 if (argc == 0) {
783 (void) fprintf(stderr, gettext("missing %s argument\n"),
784 zfs_type_to_name(type));
785 goto badusage;
786 }
787 if (argc > 1) {
788 (void) fprintf(stderr, gettext("too many arguments\n"));
789 goto badusage;
790 }
791
792 if (type == ZFS_TYPE_VOLUME && !noreserve) {
793 zpool_handle_t *zpool_handle;
794 nvlist_t *real_props;
795 uint64_t spa_version;
796 char *p;
797 zfs_prop_t resv_prop;
798 char *strval;
799 char msg[1024];
800
801 if (p = strchr(argv[0], '/'))
802 *p = '\0';
803 zpool_handle = zpool_open(g_zfs, argv[0]);
804 if (p != NULL)
805 *p = '/';
806 if (zpool_handle == NULL)
807 goto error;
808 spa_version = zpool_get_prop_int(zpool_handle,
809 ZPOOL_PROP_VERSION, NULL);
810 zpool_close(zpool_handle);
811 if (spa_version >= SPA_VERSION_REFRESERVATION)
812 resv_prop = ZFS_PROP_REFRESERVATION;
813 else
814 resv_prop = ZFS_PROP_RESERVATION;
815
816 (void) snprintf(msg, sizeof (msg),
817 gettext("cannot create '%s'"), argv[0]);
818 if (props && (real_props = zfs_valid_proplist(g_zfs, type,
819 props, 0, NULL, msg)) == NULL)
820 goto error;
821
822 volsize = zvol_volsize_to_reservation(volsize, real_props);
823 nvlist_free(real_props);
824
825 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
826 &strval) != 0) {
827 if (nvlist_add_uint64(props,
828 zfs_prop_to_name(resv_prop), volsize) != 0) {
829 nvlist_free(props);
830 nomem();
831 }
832 }
833 }
834
835 if (parents && zfs_name_valid(argv[0], type)) {
836 /*
837 * Now create the ancestors of target dataset. If the target
838 * already exists and '-p' option was used we should not
839 * complain.
840 */
841 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
842 ret = 0;
843 goto error;
844 }
845 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
846 goto error;
847 }
848
849 /* pass to libzfs */
850 if (zfs_create(g_zfs, argv[0], type, props) != 0)
851 goto error;
852
853 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
854 goto error;
855
856 ret = 0;
857 /*
858 * if the user doesn't want the dataset automatically mounted,
859 * then skip the mount/share step
860 */
861 if (zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, type))
862 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
863
864 /*
865 * Mount and/or share the new filesystem as appropriate. We provide a
866 * verbose error message to let the user know that their filesystem was
867 * in fact created, even if we failed to mount or share it.
868 */
869 if (canmount == ZFS_CANMOUNT_ON) {
870 if (zfs_mount(zhp, NULL, 0) != 0) {
871 (void) fprintf(stderr, gettext("filesystem "
872 "successfully created, but not mounted\n"));
873 ret = 1;
874 } else if (zfs_share(zhp) != 0) {
875 (void) fprintf(stderr, gettext("filesystem "
876 "successfully created, but not shared\n"));
877 ret = 1;
878 }
879 }
880
881 error:
882 if (zhp)
883 zfs_close(zhp);
884 nvlist_free(props);
885 return (ret);
886 badusage:
887 nvlist_free(props);
888 usage(B_FALSE);
889 return (2);
890 }
891
892 /*
893 * zfs destroy [-rRf] <fs, vol>
894 * zfs destroy [-rRd] <snap>
895 *
896 * -r Recursively destroy all children
897 * -R Recursively destroy all dependents, including clones
898 * -f Force unmounting of any dependents
899 * -d If we can't destroy now, mark for deferred destruction
900 *
901 * Destroys the given dataset. By default, it will unmount any filesystems,
902 * and refuse to destroy a dataset that has any dependents. A dependent can
903 * either be a child, or a clone of a child.
904 */
905 typedef struct destroy_cbdata {
906 boolean_t cb_first;
907 boolean_t cb_force;
908 boolean_t cb_recurse;
909 boolean_t cb_error;
910 boolean_t cb_doclones;
911 zfs_handle_t *cb_target;
912 boolean_t cb_defer_destroy;
913 boolean_t cb_verbose;
914 boolean_t cb_parsable;
915 boolean_t cb_dryrun;
916 nvlist_t *cb_nvl;
917 nvlist_t *cb_batchedsnaps;
918
919 /* first snap in contiguous run */
920 char *cb_firstsnap;
921 /* previous snap in contiguous run */
922 char *cb_prevsnap;
923 int64_t cb_snapused;
924 char *cb_snapspec;
925 char *cb_bookmark;
926 } destroy_cbdata_t;
927
928 /*
929 * Check for any dependents based on the '-r' or '-R' flags.
930 */
931 static int
932 destroy_check_dependent(zfs_handle_t *zhp, void *data)
933 {
934 destroy_cbdata_t *cbp = data;
935 const char *tname = zfs_get_name(cbp->cb_target);
936 const char *name = zfs_get_name(zhp);
937
938 if (strncmp(tname, name, strlen(tname)) == 0 &&
939 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
940 /*
941 * This is a direct descendant, not a clone somewhere else in
942 * the hierarchy.
943 */
944 if (cbp->cb_recurse)
945 goto out;
946
947 if (cbp->cb_first) {
948 (void) fprintf(stderr, gettext("cannot destroy '%s': "
949 "%s has children\n"),
950 zfs_get_name(cbp->cb_target),
951 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
952 (void) fprintf(stderr, gettext("use '-r' to destroy "
953 "the following datasets:\n"));
954 cbp->cb_first = B_FALSE;
955 cbp->cb_error = B_TRUE;
956 }
957
958 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
959 } else {
960 /*
961 * This is a clone. We only want to report this if the '-r'
962 * wasn't specified, or the target is a snapshot.
963 */
964 if (!cbp->cb_recurse &&
965 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
966 goto out;
967
968 if (cbp->cb_first) {
969 (void) fprintf(stderr, gettext("cannot destroy '%s': "
970 "%s has dependent clones\n"),
971 zfs_get_name(cbp->cb_target),
972 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
973 (void) fprintf(stderr, gettext("use '-R' to destroy "
974 "the following datasets:\n"));
975 cbp->cb_first = B_FALSE;
976 cbp->cb_error = B_TRUE;
977 cbp->cb_dryrun = B_TRUE;
978 }
979
980 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
981 }
982
983 out:
984 zfs_close(zhp);
985 return (0);
986 }
987
988 static int
989 destroy_callback(zfs_handle_t *zhp, void *data)
990 {
991 destroy_cbdata_t *cb = data;
992 const char *name = zfs_get_name(zhp);
993
994 if (cb->cb_verbose) {
995 if (cb->cb_parsable) {
996 (void) printf("destroy\t%s\n", name);
997 } else if (cb->cb_dryrun) {
998 (void) printf(gettext("would destroy %s\n"),
999 name);
1000 } else {
1001 (void) printf(gettext("will destroy %s\n"),
1002 name);
1003 }
1004 }
1005
1006 /*
1007 * Ignore pools (which we've already flagged as an error before getting
1008 * here).
1009 */
1010 if (strchr(zfs_get_name(zhp), '/') == NULL &&
1011 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1012 zfs_close(zhp);
1013 return (0);
1014 }
1015 if (cb->cb_dryrun) {
1016 zfs_close(zhp);
1017 return (0);
1018 }
1019
1020 /*
1021 * We batch up all contiguous snapshots (even of different
1022 * filesystems) and destroy them with one ioctl. We can't
1023 * simply do all snap deletions and then all fs deletions,
1024 * because we must delete a clone before its origin.
1025 */
1026 if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1027 fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1028 } else {
1029 int error = zfs_destroy_snaps_nvl(g_zfs,
1030 cb->cb_batchedsnaps, B_FALSE);
1031 fnvlist_free(cb->cb_batchedsnaps);
1032 cb->cb_batchedsnaps = fnvlist_alloc();
1033
1034 if (error != 0 ||
1035 zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1036 zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1037 zfs_close(zhp);
1038 return (-1);
1039 }
1040 }
1041
1042 zfs_close(zhp);
1043 return (0);
1044 }
1045
1046 static int
1047 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1048 {
1049 destroy_cbdata_t *cb = arg;
1050 const char *name = zfs_get_name(zhp);
1051 int err = 0;
1052
1053 if (nvlist_exists(cb->cb_nvl, name)) {
1054 if (cb->cb_firstsnap == NULL)
1055 cb->cb_firstsnap = strdup(name);
1056 if (cb->cb_prevsnap != NULL)
1057 free(cb->cb_prevsnap);
1058 /* this snap continues the current range */
1059 cb->cb_prevsnap = strdup(name);
1060 if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1061 nomem();
1062 if (cb->cb_verbose) {
1063 if (cb->cb_parsable) {
1064 (void) printf("destroy\t%s\n", name);
1065 } else if (cb->cb_dryrun) {
1066 (void) printf(gettext("would destroy %s\n"),
1067 name);
1068 } else {
1069 (void) printf(gettext("will destroy %s\n"),
1070 name);
1071 }
1072 }
1073 } else if (cb->cb_firstsnap != NULL) {
1074 /* end of this range */
1075 uint64_t used = 0;
1076 err = lzc_snaprange_space(cb->cb_firstsnap,
1077 cb->cb_prevsnap, &used);
1078 cb->cb_snapused += used;
1079 free(cb->cb_firstsnap);
1080 cb->cb_firstsnap = NULL;
1081 free(cb->cb_prevsnap);
1082 cb->cb_prevsnap = NULL;
1083 }
1084 zfs_close(zhp);
1085 return (err);
1086 }
1087
1088 static int
1089 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1090 {
1091 int err = 0;
1092 assert(cb->cb_firstsnap == NULL);
1093 assert(cb->cb_prevsnap == NULL);
1094 err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb);
1095 if (cb->cb_firstsnap != NULL) {
1096 uint64_t used = 0;
1097 if (err == 0) {
1098 err = lzc_snaprange_space(cb->cb_firstsnap,
1099 cb->cb_prevsnap, &used);
1100 }
1101 cb->cb_snapused += used;
1102 free(cb->cb_firstsnap);
1103 cb->cb_firstsnap = NULL;
1104 free(cb->cb_prevsnap);
1105 cb->cb_prevsnap = NULL;
1106 }
1107 return (err);
1108 }
1109
1110 static int
1111 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1112 {
1113 destroy_cbdata_t *cb = arg;
1114 int err = 0;
1115
1116 /* Check for clones. */
1117 if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1118 cb->cb_target = zhp;
1119 cb->cb_first = B_TRUE;
1120 err = zfs_iter_dependents(zhp, B_TRUE,
1121 destroy_check_dependent, cb);
1122 }
1123
1124 if (err == 0) {
1125 if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1126 nomem();
1127 }
1128 zfs_close(zhp);
1129 return (err);
1130 }
1131
1132 static int
1133 gather_snapshots(zfs_handle_t *zhp, void *arg)
1134 {
1135 destroy_cbdata_t *cb = arg;
1136 int err = 0;
1137
1138 err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1139 if (err == ENOENT)
1140 err = 0;
1141 if (err != 0)
1142 goto out;
1143
1144 if (cb->cb_verbose) {
1145 err = destroy_print_snapshots(zhp, cb);
1146 if (err != 0)
1147 goto out;
1148 }
1149
1150 if (cb->cb_recurse)
1151 err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1152
1153 out:
1154 zfs_close(zhp);
1155 return (err);
1156 }
1157
1158 static int
1159 destroy_clones(destroy_cbdata_t *cb)
1160 {
1161 nvpair_t *pair;
1162 for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1163 pair != NULL;
1164 pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1165 zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1166 ZFS_TYPE_SNAPSHOT);
1167 if (zhp != NULL) {
1168 boolean_t defer = cb->cb_defer_destroy;
1169 int err = 0;
1170
1171 /*
1172 * We can't defer destroy non-snapshots, so set it to
1173 * false while destroying the clones.
1174 */
1175 cb->cb_defer_destroy = B_FALSE;
1176 err = zfs_iter_dependents(zhp, B_FALSE,
1177 destroy_callback, cb);
1178 cb->cb_defer_destroy = defer;
1179 zfs_close(zhp);
1180 if (err != 0)
1181 return (err);
1182 }
1183 }
1184 return (0);
1185 }
1186
1187 static int
1188 zfs_do_destroy(int argc, char **argv)
1189 {
1190 destroy_cbdata_t cb = { 0 };
1191 int rv = 0;
1192 int err = 0;
1193 int c;
1194 zfs_handle_t *zhp = NULL;
1195 char *at, *pound;
1196 zfs_type_t type = ZFS_TYPE_DATASET;
1197
1198 /* check options */
1199 while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1200 switch (c) {
1201 case 'v':
1202 cb.cb_verbose = B_TRUE;
1203 break;
1204 case 'p':
1205 cb.cb_verbose = B_TRUE;
1206 cb.cb_parsable = B_TRUE;
1207 break;
1208 case 'n':
1209 cb.cb_dryrun = B_TRUE;
1210 break;
1211 case 'd':
1212 cb.cb_defer_destroy = B_TRUE;
1213 type = ZFS_TYPE_SNAPSHOT;
1214 break;
1215 case 'f':
1216 cb.cb_force = B_TRUE;
1217 break;
1218 case 'r':
1219 cb.cb_recurse = B_TRUE;
1220 break;
1221 case 'R':
1222 cb.cb_recurse = B_TRUE;
1223 cb.cb_doclones = B_TRUE;
1224 break;
1225 case '?':
1226 default:
1227 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1228 optopt);
1229 usage(B_FALSE);
1230 }
1231 }
1232
1233 argc -= optind;
1234 argv += optind;
1235
1236 /* check number of arguments */
1237 if (argc == 0) {
1238 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1239 usage(B_FALSE);
1240 }
1241 if (argc > 1) {
1242 (void) fprintf(stderr, gettext("too many arguments\n"));
1243 usage(B_FALSE);
1244 }
1245
1246 at = strchr(argv[0], '@');
1247 pound = strchr(argv[0], '#');
1248 if (at != NULL) {
1249
1250 /* Build the list of snaps to destroy in cb_nvl. */
1251 cb.cb_nvl = fnvlist_alloc();
1252
1253 *at = '\0';
1254 zhp = zfs_open(g_zfs, argv[0],
1255 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1256 if (zhp == NULL)
1257 return (1);
1258
1259 cb.cb_snapspec = at + 1;
1260 if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1261 cb.cb_error) {
1262 rv = 1;
1263 goto out;
1264 }
1265
1266 if (nvlist_empty(cb.cb_nvl)) {
1267 (void) fprintf(stderr, gettext("could not find any "
1268 "snapshots to destroy; check snapshot names.\n"));
1269 rv = 1;
1270 goto out;
1271 }
1272
1273 if (cb.cb_verbose) {
1274 char buf[16];
1275 zfs_nicenum(cb.cb_snapused, buf, sizeof (buf));
1276 if (cb.cb_parsable) {
1277 (void) printf("reclaim\t%llu\n",
1278 cb.cb_snapused);
1279 } else if (cb.cb_dryrun) {
1280 (void) printf(gettext("would reclaim %s\n"),
1281 buf);
1282 } else {
1283 (void) printf(gettext("will reclaim %s\n"),
1284 buf);
1285 }
1286 }
1287
1288 if (!cb.cb_dryrun) {
1289 if (cb.cb_doclones) {
1290 cb.cb_batchedsnaps = fnvlist_alloc();
1291 err = destroy_clones(&cb);
1292 if (err == 0) {
1293 err = zfs_destroy_snaps_nvl(g_zfs,
1294 cb.cb_batchedsnaps, B_FALSE);
1295 }
1296 if (err != 0) {
1297 rv = 1;
1298 goto out;
1299 }
1300 }
1301 if (err == 0) {
1302 err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1303 cb.cb_defer_destroy);
1304 }
1305 }
1306
1307 if (err != 0)
1308 rv = 1;
1309 } else if (pound != NULL) {
1310 int err;
1311 nvlist_t *nvl;
1312
1313 if (cb.cb_dryrun) {
1314 (void) fprintf(stderr,
1315 "dryrun is not supported with bookmark\n");
1316 return (-1);
1317 }
1318
1319 if (cb.cb_defer_destroy) {
1320 (void) fprintf(stderr,
1321 "defer destroy is not supported with bookmark\n");
1322 return (-1);
1323 }
1324
1325 if (cb.cb_recurse) {
1326 (void) fprintf(stderr,
1327 "recursive is not supported with bookmark\n");
1328 return (-1);
1329 }
1330
1331 if (!zfs_bookmark_exists(argv[0])) {
1332 (void) fprintf(stderr, gettext("bookmark '%s' "
1333 "does not exist.\n"), argv[0]);
1334 return (1);
1335 }
1336
1337 nvl = fnvlist_alloc();
1338 fnvlist_add_boolean(nvl, argv[0]);
1339
1340 err = lzc_destroy_bookmarks(nvl, NULL);
1341 if (err != 0) {
1342 (void) zfs_standard_error(g_zfs, err,
1343 "cannot destroy bookmark");
1344 }
1345
1346 nvlist_free(cb.cb_nvl);
1347
1348 return (err);
1349 } else {
1350 /* Open the given dataset */
1351 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1352 return (1);
1353
1354 cb.cb_target = zhp;
1355
1356 /*
1357 * Perform an explicit check for pools before going any further.
1358 */
1359 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1360 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1361 (void) fprintf(stderr, gettext("cannot destroy '%s': "
1362 "operation does not apply to pools\n"),
1363 zfs_get_name(zhp));
1364 (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1365 "%s' to destroy all datasets in the pool\n"),
1366 zfs_get_name(zhp));
1367 (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1368 "to destroy the pool itself\n"), zfs_get_name(zhp));
1369 rv = 1;
1370 goto out;
1371 }
1372
1373 /*
1374 * Check for any dependents and/or clones.
1375 */
1376 cb.cb_first = B_TRUE;
1377 if (!cb.cb_doclones &&
1378 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1379 &cb) != 0) {
1380 rv = 1;
1381 goto out;
1382 }
1383
1384 if (cb.cb_error) {
1385 rv = 1;
1386 goto out;
1387 }
1388
1389 cb.cb_batchedsnaps = fnvlist_alloc();
1390 if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1391 &cb) != 0) {
1392 rv = 1;
1393 goto out;
1394 }
1395
1396 /*
1397 * Do the real thing. The callback will close the
1398 * handle regardless of whether it succeeds or not.
1399 */
1400 err = destroy_callback(zhp, &cb);
1401 zhp = NULL;
1402 if (err == 0) {
1403 err = zfs_destroy_snaps_nvl(g_zfs,
1404 cb.cb_batchedsnaps, cb.cb_defer_destroy);
1405 }
1406 if (err != 0)
1407 rv = 1;
1408 }
1409
1410 out:
1411 fnvlist_free(cb.cb_batchedsnaps);
1412 fnvlist_free(cb.cb_nvl);
1413 if (zhp != NULL)
1414 zfs_close(zhp);
1415 return (rv);
1416 }
1417
1418 static boolean_t
1419 is_recvd_column(zprop_get_cbdata_t *cbp)
1420 {
1421 int i;
1422 zfs_get_column_t col;
1423
1424 for (i = 0; i < ZFS_GET_NCOLS &&
1425 (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1426 if (col == GET_COL_RECVD)
1427 return (B_TRUE);
1428 return (B_FALSE);
1429 }
1430
1431 /*
1432 * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1433 * < all | property[,property]... > < fs | snap | vol > ...
1434 *
1435 * -r recurse over any child datasets
1436 * -H scripted mode. Headers are stripped, and fields are separated
1437 * by tabs instead of spaces.
1438 * -o Set of fields to display. One of "name,property,value,
1439 * received,source". Default is "name,property,value,source".
1440 * "all" is an alias for all five.
1441 * -s Set of sources to allow. One of
1442 * "local,default,inherited,received,temporary,none". Default is
1443 * all six.
1444 * -p Display values in parsable (literal) format.
1445 *
1446 * Prints properties for the given datasets. The user can control which
1447 * columns to display as well as which property types to allow.
1448 */
1449
1450 /*
1451 * Invoked to display the properties for a single dataset.
1452 */
1453 static int
1454 get_callback(zfs_handle_t *zhp, void *data)
1455 {
1456 char buf[ZFS_MAXPROPLEN];
1457 char rbuf[ZFS_MAXPROPLEN];
1458 zprop_source_t sourcetype;
1459 char source[ZFS_MAXNAMELEN];
1460 zprop_get_cbdata_t *cbp = data;
1461 nvlist_t *user_props = zfs_get_user_props(zhp);
1462 zprop_list_t *pl = cbp->cb_proplist;
1463 nvlist_t *propval;
1464 char *strval;
1465 char *sourceval;
1466 boolean_t received = is_recvd_column(cbp);
1467
1468 for (; pl != NULL; pl = pl->pl_next) {
1469 char *recvdval = NULL;
1470 /*
1471 * Skip the special fake placeholder. This will also skip over
1472 * the name property when 'all' is specified.
1473 */
1474 if (pl->pl_prop == ZFS_PROP_NAME &&
1475 pl == cbp->cb_proplist)
1476 continue;
1477
1478 if (pl->pl_prop != ZPROP_INVAL) {
1479 if (zfs_prop_get(zhp, pl->pl_prop, buf,
1480 sizeof (buf), &sourcetype, source,
1481 sizeof (source),
1482 cbp->cb_literal) != 0) {
1483 if (pl->pl_all)
1484 continue;
1485 if (!zfs_prop_valid_for_type(pl->pl_prop,
1486 ZFS_TYPE_DATASET)) {
1487 (void) fprintf(stderr,
1488 gettext("No such property '%s'\n"),
1489 zfs_prop_to_name(pl->pl_prop));
1490 continue;
1491 }
1492 sourcetype = ZPROP_SRC_NONE;
1493 (void) strlcpy(buf, "-", sizeof (buf));
1494 }
1495
1496 if (received && (zfs_prop_get_recvd(zhp,
1497 zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1498 cbp->cb_literal) == 0))
1499 recvdval = rbuf;
1500
1501 zprop_print_one_property(zfs_get_name(zhp), cbp,
1502 zfs_prop_to_name(pl->pl_prop),
1503 buf, sourcetype, source, recvdval);
1504 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1505 sourcetype = ZPROP_SRC_LOCAL;
1506
1507 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1508 buf, sizeof (buf), cbp->cb_literal) != 0) {
1509 sourcetype = ZPROP_SRC_NONE;
1510 (void) strlcpy(buf, "-", sizeof (buf));
1511 }
1512
1513 zprop_print_one_property(zfs_get_name(zhp), cbp,
1514 pl->pl_user_prop, buf, sourcetype, source, NULL);
1515 } else if (zfs_prop_written(pl->pl_user_prop)) {
1516 sourcetype = ZPROP_SRC_LOCAL;
1517
1518 if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1519 buf, sizeof (buf), cbp->cb_literal) != 0) {
1520 sourcetype = ZPROP_SRC_NONE;
1521 (void) strlcpy(buf, "-", sizeof (buf));
1522 }
1523
1524 zprop_print_one_property(zfs_get_name(zhp), cbp,
1525 pl->pl_user_prop, buf, sourcetype, source, NULL);
1526 } else {
1527 if (nvlist_lookup_nvlist(user_props,
1528 pl->pl_user_prop, &propval) != 0) {
1529 if (pl->pl_all)
1530 continue;
1531 sourcetype = ZPROP_SRC_NONE;
1532 strval = "-";
1533 } else {
1534 verify(nvlist_lookup_string(propval,
1535 ZPROP_VALUE, &strval) == 0);
1536 verify(nvlist_lookup_string(propval,
1537 ZPROP_SOURCE, &sourceval) == 0);
1538
1539 if (strcmp(sourceval,
1540 zfs_get_name(zhp)) == 0) {
1541 sourcetype = ZPROP_SRC_LOCAL;
1542 } else if (strcmp(sourceval,
1543 ZPROP_SOURCE_VAL_RECVD) == 0) {
1544 sourcetype = ZPROP_SRC_RECEIVED;
1545 } else {
1546 sourcetype = ZPROP_SRC_INHERITED;
1547 (void) strlcpy(source,
1548 sourceval, sizeof (source));
1549 }
1550 }
1551
1552 if (received && (zfs_prop_get_recvd(zhp,
1553 pl->pl_user_prop, rbuf, sizeof (rbuf),
1554 cbp->cb_literal) == 0))
1555 recvdval = rbuf;
1556
1557 zprop_print_one_property(zfs_get_name(zhp), cbp,
1558 pl->pl_user_prop, strval, sourcetype,
1559 source, recvdval);
1560 }
1561 }
1562
1563 return (0);
1564 }
1565
1566 static int
1567 zfs_do_get(int argc, char **argv)
1568 {
1569 zprop_get_cbdata_t cb = { 0 };
1570 int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1571 int types = ZFS_TYPE_DATASET;
1572 char *value, *fields;
1573 int ret = 0;
1574 int limit = 0;
1575 zprop_list_t fake_name = { 0 };
1576
1577 /*
1578 * Set up default columns and sources.
1579 */
1580 cb.cb_sources = ZPROP_SRC_ALL;
1581 cb.cb_columns[0] = GET_COL_NAME;
1582 cb.cb_columns[1] = GET_COL_PROPERTY;
1583 cb.cb_columns[2] = GET_COL_VALUE;
1584 cb.cb_columns[3] = GET_COL_SOURCE;
1585 cb.cb_type = ZFS_TYPE_DATASET;
1586
1587 /* check options */
1588 while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1589 switch (c) {
1590 case 'p':
1591 cb.cb_literal = B_TRUE;
1592 break;
1593 case 'd':
1594 limit = parse_depth(optarg, &flags);
1595 break;
1596 case 'r':
1597 flags |= ZFS_ITER_RECURSE;
1598 break;
1599 case 'H':
1600 cb.cb_scripted = B_TRUE;
1601 break;
1602 case ':':
1603 (void) fprintf(stderr, gettext("missing argument for "
1604 "'%c' option\n"), optopt);
1605 usage(B_FALSE);
1606 break;
1607 case 'o':
1608 /*
1609 * Process the set of columns to display. We zero out
1610 * the structure to give us a blank slate.
1611 */
1612 bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1613 i = 0;
1614 while (*optarg != '\0') {
1615 static char *col_subopts[] =
1616 { "name", "property", "value", "received",
1617 "source", "all", NULL };
1618
1619 if (i == ZFS_GET_NCOLS) {
1620 (void) fprintf(stderr, gettext("too "
1621 "many fields given to -o "
1622 "option\n"));
1623 usage(B_FALSE);
1624 }
1625
1626 switch (getsubopt(&optarg, col_subopts,
1627 &value)) {
1628 case 0:
1629 cb.cb_columns[i++] = GET_COL_NAME;
1630 break;
1631 case 1:
1632 cb.cb_columns[i++] = GET_COL_PROPERTY;
1633 break;
1634 case 2:
1635 cb.cb_columns[i++] = GET_COL_VALUE;
1636 break;
1637 case 3:
1638 cb.cb_columns[i++] = GET_COL_RECVD;
1639 flags |= ZFS_ITER_RECVD_PROPS;
1640 break;
1641 case 4:
1642 cb.cb_columns[i++] = GET_COL_SOURCE;
1643 break;
1644 case 5:
1645 if (i > 0) {
1646 (void) fprintf(stderr,
1647 gettext("\"all\" conflicts "
1648 "with specific fields "
1649 "given to -o option\n"));
1650 usage(B_FALSE);
1651 }
1652 cb.cb_columns[0] = GET_COL_NAME;
1653 cb.cb_columns[1] = GET_COL_PROPERTY;
1654 cb.cb_columns[2] = GET_COL_VALUE;
1655 cb.cb_columns[3] = GET_COL_RECVD;
1656 cb.cb_columns[4] = GET_COL_SOURCE;
1657 flags |= ZFS_ITER_RECVD_PROPS;
1658 i = ZFS_GET_NCOLS;
1659 break;
1660 default:
1661 (void) fprintf(stderr,
1662 gettext("invalid column name "
1663 "'%s'\n"), value);
1664 usage(B_FALSE);
1665 }
1666 }
1667 break;
1668
1669 case 's':
1670 cb.cb_sources = 0;
1671 while (*optarg != '\0') {
1672 static char *source_subopts[] = {
1673 "local", "default", "inherited",
1674 "received", "temporary", "none",
1675 NULL };
1676
1677 switch (getsubopt(&optarg, source_subopts,
1678 &value)) {
1679 case 0:
1680 cb.cb_sources |= ZPROP_SRC_LOCAL;
1681 break;
1682 case 1:
1683 cb.cb_sources |= ZPROP_SRC_DEFAULT;
1684 break;
1685 case 2:
1686 cb.cb_sources |= ZPROP_SRC_INHERITED;
1687 break;
1688 case 3:
1689 cb.cb_sources |= ZPROP_SRC_RECEIVED;
1690 break;
1691 case 4:
1692 cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1693 break;
1694 case 5:
1695 cb.cb_sources |= ZPROP_SRC_NONE;
1696 break;
1697 default:
1698 (void) fprintf(stderr,
1699 gettext("invalid source "
1700 "'%s'\n"), value);
1701 usage(B_FALSE);
1702 }
1703 }
1704 break;
1705
1706 case 't':
1707 types = 0;
1708 flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1709 while (*optarg != '\0') {
1710 static char *type_subopts[] = { "filesystem",
1711 "volume", "snapshot", "bookmark",
1712 "all", NULL };
1713
1714 switch (getsubopt(&optarg, type_subopts,
1715 &value)) {
1716 case 0:
1717 types |= ZFS_TYPE_FILESYSTEM;
1718 break;
1719 case 1:
1720 types |= ZFS_TYPE_VOLUME;
1721 break;
1722 case 2:
1723 types |= ZFS_TYPE_SNAPSHOT;
1724 break;
1725 case 3:
1726 types |= ZFS_TYPE_BOOKMARK;
1727 break;
1728 case 4:
1729 types = ZFS_TYPE_DATASET |
1730 ZFS_TYPE_BOOKMARK;
1731 break;
1732
1733 default:
1734 (void) fprintf(stderr,
1735 gettext("invalid type '%s'\n"),
1736 value);
1737 usage(B_FALSE);
1738 }
1739 }
1740 break;
1741
1742 case '?':
1743 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1744 optopt);
1745 usage(B_FALSE);
1746 }
1747 }
1748
1749 argc -= optind;
1750 argv += optind;
1751
1752 if (argc < 1) {
1753 (void) fprintf(stderr, gettext("missing property "
1754 "argument\n"));
1755 usage(B_FALSE);
1756 }
1757
1758 fields = argv[0];
1759
1760 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1761 != 0)
1762 usage(B_FALSE);
1763
1764 argc--;
1765 argv++;
1766
1767 /*
1768 * As part of zfs_expand_proplist(), we keep track of the maximum column
1769 * width for each property. For the 'NAME' (and 'SOURCE') columns, we
1770 * need to know the maximum name length. However, the user likely did
1771 * not specify 'name' as one of the properties to fetch, so we need to
1772 * make sure we always include at least this property for
1773 * print_get_headers() to work properly.
1774 */
1775 if (cb.cb_proplist != NULL) {
1776 fake_name.pl_prop = ZFS_PROP_NAME;
1777 fake_name.pl_width = strlen(gettext("NAME"));
1778 fake_name.pl_next = cb.cb_proplist;
1779 cb.cb_proplist = &fake_name;
1780 }
1781
1782 cb.cb_first = B_TRUE;
1783
1784 /* run for each object */
1785 ret = zfs_for_each(argc, argv, flags, types, NULL,
1786 &cb.cb_proplist, limit, get_callback, &cb);
1787
1788 if (cb.cb_proplist == &fake_name)
1789 zprop_free_list(fake_name.pl_next);
1790 else
1791 zprop_free_list(cb.cb_proplist);
1792
1793 return (ret);
1794 }
1795
1796 /*
1797 * inherit [-rS] <property> <fs|vol> ...
1798 *
1799 * -r Recurse over all children
1800 * -S Revert to received value, if any
1801 *
1802 * For each dataset specified on the command line, inherit the given property
1803 * from its parent. Inheriting a property at the pool level will cause it to
1804 * use the default value. The '-r' flag will recurse over all children, and is
1805 * useful for setting a property on a hierarchy-wide basis, regardless of any
1806 * local modifications for each dataset.
1807 */
1808
1809 typedef struct inherit_cbdata {
1810 const char *cb_propname;
1811 boolean_t cb_received;
1812 } inherit_cbdata_t;
1813
1814 static int
1815 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1816 {
1817 inherit_cbdata_t *cb = data;
1818 zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
1819
1820 /*
1821 * If we're doing it recursively, then ignore properties that
1822 * are not valid for this type of dataset.
1823 */
1824 if (prop != ZPROP_INVAL &&
1825 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1826 return (0);
1827
1828 return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1829 }
1830
1831 static int
1832 inherit_cb(zfs_handle_t *zhp, void *data)
1833 {
1834 inherit_cbdata_t *cb = data;
1835
1836 return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1837 }
1838
1839 static int
1840 zfs_do_inherit(int argc, char **argv)
1841 {
1842 int c;
1843 zfs_prop_t prop;
1844 inherit_cbdata_t cb = { 0 };
1845 char *propname;
1846 int ret = 0;
1847 int flags = 0;
1848 boolean_t received = B_FALSE;
1849
1850 /* check options */
1851 while ((c = getopt(argc, argv, "rS")) != -1) {
1852 switch (c) {
1853 case 'r':
1854 flags |= ZFS_ITER_RECURSE;
1855 break;
1856 case 'S':
1857 received = B_TRUE;
1858 break;
1859 case '?':
1860 default:
1861 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1862 optopt);
1863 usage(B_FALSE);
1864 }
1865 }
1866
1867 argc -= optind;
1868 argv += optind;
1869
1870 /* check number of arguments */
1871 if (argc < 1) {
1872 (void) fprintf(stderr, gettext("missing property argument\n"));
1873 usage(B_FALSE);
1874 }
1875 if (argc < 2) {
1876 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1877 usage(B_FALSE);
1878 }
1879
1880 propname = argv[0];
1881 argc--;
1882 argv++;
1883
1884 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1885 if (zfs_prop_readonly(prop)) {
1886 (void) fprintf(stderr, gettext(
1887 "%s property is read-only\n"),
1888 propname);
1889 return (1);
1890 }
1891 if (!zfs_prop_inheritable(prop) && !received) {
1892 (void) fprintf(stderr, gettext("'%s' property cannot "
1893 "be inherited\n"), propname);
1894 if (prop == ZFS_PROP_QUOTA ||
1895 prop == ZFS_PROP_RESERVATION ||
1896 prop == ZFS_PROP_REFQUOTA ||
1897 prop == ZFS_PROP_REFRESERVATION) {
1898 (void) fprintf(stderr, gettext("use 'zfs set "
1899 "%s=none' to clear\n"), propname);
1900 (void) fprintf(stderr, gettext("use 'zfs "
1901 "inherit -S %s' to revert to received "
1902 "value\n"), propname);
1903 }
1904 return (1);
1905 }
1906 if (received && (prop == ZFS_PROP_VOLSIZE ||
1907 prop == ZFS_PROP_VERSION)) {
1908 (void) fprintf(stderr, gettext("'%s' property cannot "
1909 "be reverted to a received value\n"), propname);
1910 return (1);
1911 }
1912 } else if (!zfs_prop_user(propname)) {
1913 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1914 propname);
1915 usage(B_FALSE);
1916 }
1917
1918 cb.cb_propname = propname;
1919 cb.cb_received = received;
1920
1921 if (flags & ZFS_ITER_RECURSE) {
1922 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1923 NULL, NULL, 0, inherit_recurse_cb, &cb);
1924 } else {
1925 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1926 NULL, NULL, 0, inherit_cb, &cb);
1927 }
1928
1929 return (ret);
1930 }
1931
1932 typedef struct upgrade_cbdata {
1933 uint64_t cb_numupgraded;
1934 uint64_t cb_numsamegraded;
1935 uint64_t cb_numfailed;
1936 uint64_t cb_version;
1937 boolean_t cb_newer;
1938 boolean_t cb_foundone;
1939 char cb_lastfs[ZFS_MAXNAMELEN];
1940 } upgrade_cbdata_t;
1941
1942 static int
1943 same_pool(zfs_handle_t *zhp, const char *name)
1944 {
1945 int len1 = strcspn(name, "/@");
1946 const char *zhname = zfs_get_name(zhp);
1947 int len2 = strcspn(zhname, "/@");
1948
1949 if (len1 != len2)
1950 return (B_FALSE);
1951 return (strncmp(name, zhname, len1) == 0);
1952 }
1953
1954 static int
1955 upgrade_list_callback(zfs_handle_t *zhp, void *data)
1956 {
1957 upgrade_cbdata_t *cb = data;
1958 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1959
1960 /* list if it's old/new */
1961 if ((!cb->cb_newer && version < ZPL_VERSION) ||
1962 (cb->cb_newer && version > ZPL_VERSION)) {
1963 char *str;
1964 if (cb->cb_newer) {
1965 str = gettext("The following filesystems are "
1966 "formatted using a newer software version and\n"
1967 "cannot be accessed on the current system.\n\n");
1968 } else {
1969 str = gettext("The following filesystems are "
1970 "out of date, and can be upgraded. After being\n"
1971 "upgraded, these filesystems (and any 'zfs send' "
1972 "streams generated from\n"
1973 "subsequent snapshots) will no longer be "
1974 "accessible by older software versions.\n\n");
1975 }
1976
1977 if (!cb->cb_foundone) {
1978 (void) puts(str);
1979 (void) printf(gettext("VER FILESYSTEM\n"));
1980 (void) printf(gettext("--- ------------\n"));
1981 cb->cb_foundone = B_TRUE;
1982 }
1983
1984 (void) printf("%2u %s\n", version, zfs_get_name(zhp));
1985 }
1986
1987 return (0);
1988 }
1989
1990 static int
1991 upgrade_set_callback(zfs_handle_t *zhp, void *data)
1992 {
1993 upgrade_cbdata_t *cb = data;
1994 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1995 int needed_spa_version;
1996 int spa_version;
1997
1998 if (zfs_spa_version(zhp, &spa_version) < 0)
1999 return (-1);
2000
2001 needed_spa_version = zfs_spa_version_map(cb->cb_version);
2002
2003 if (needed_spa_version < 0)
2004 return (-1);
2005
2006 if (spa_version < needed_spa_version) {
2007 /* can't upgrade */
2008 (void) printf(gettext("%s: can not be "
2009 "upgraded; the pool version needs to first "
2010 "be upgraded\nto version %d\n\n"),
2011 zfs_get_name(zhp), needed_spa_version);
2012 cb->cb_numfailed++;
2013 return (0);
2014 }
2015
2016 /* upgrade */
2017 if (version < cb->cb_version) {
2018 char verstr[16];
2019 (void) snprintf(verstr, sizeof (verstr),
2020 "%llu", cb->cb_version);
2021 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
2022 /*
2023 * If they did "zfs upgrade -a", then we could
2024 * be doing ioctls to different pools. We need
2025 * to log this history once to each pool, and bypass
2026 * the normal history logging that happens in main().
2027 */
2028 (void) zpool_log_history(g_zfs, history_str);
2029 log_history = B_FALSE;
2030 }
2031 if (zfs_prop_set(zhp, "version", verstr) == 0)
2032 cb->cb_numupgraded++;
2033 else
2034 cb->cb_numfailed++;
2035 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
2036 } else if (version > cb->cb_version) {
2037 /* can't downgrade */
2038 (void) printf(gettext("%s: can not be downgraded; "
2039 "it is already at version %u\n"),
2040 zfs_get_name(zhp), version);
2041 cb->cb_numfailed++;
2042 } else {
2043 cb->cb_numsamegraded++;
2044 }
2045 return (0);
2046 }
2047
2048 /*
2049 * zfs upgrade
2050 * zfs upgrade -v
2051 * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2052 */
2053 static int
2054 zfs_do_upgrade(int argc, char **argv)
2055 {
2056 boolean_t all = B_FALSE;
2057 boolean_t showversions = B_FALSE;
2058 int ret = 0;
2059 upgrade_cbdata_t cb = { 0 };
2060 char c;
2061 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2062
2063 /* check options */
2064 while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2065 switch (c) {
2066 case 'r':
2067 flags |= ZFS_ITER_RECURSE;
2068 break;
2069 case 'v':
2070 showversions = B_TRUE;
2071 break;
2072 case 'V':
2073 if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2074 optarg, &cb.cb_version) != 0) {
2075 (void) fprintf(stderr,
2076 gettext("invalid version %s\n"), optarg);
2077 usage(B_FALSE);
2078 }
2079 break;
2080 case 'a':
2081 all = B_TRUE;
2082 break;
2083 case '?':
2084 default:
2085 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2086 optopt);
2087 usage(B_FALSE);
2088 }
2089 }
2090
2091 argc -= optind;
2092 argv += optind;
2093
2094 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2095 usage(B_FALSE);
2096 if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2097 cb.cb_version || argc))
2098 usage(B_FALSE);
2099 if ((all || argc) && (showversions))
2100 usage(B_FALSE);
2101 if (all && argc)
2102 usage(B_FALSE);
2103
2104 if (showversions) {
2105 /* Show info on available versions. */
2106 (void) printf(gettext("The following filesystem versions are "
2107 "supported:\n\n"));
2108 (void) printf(gettext("VER DESCRIPTION\n"));
2109 (void) printf("--- -----------------------------------------"
2110 "---------------\n");
2111 (void) printf(gettext(" 1 Initial ZFS filesystem version\n"));
2112 (void) printf(gettext(" 2 Enhanced directory entries\n"));
2113 (void) printf(gettext(" 3 Case insensitive and filesystem "
2114 "user identifier (FUID)\n"));
2115 (void) printf(gettext(" 4 userquota, groupquota "
2116 "properties\n"));
2117 (void) printf(gettext(" 5 System attributes\n"));
2118 (void) printf(gettext("\nFor more information on a particular "
2119 "version, including supported releases,\n"));
2120 (void) printf("see the ZFS Administration Guide.\n\n");
2121 ret = 0;
2122 } else if (argc || all) {
2123 /* Upgrade filesystems */
2124 if (cb.cb_version == 0)
2125 cb.cb_version = ZPL_VERSION;
2126 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2127 NULL, NULL, 0, upgrade_set_callback, &cb);
2128 (void) printf(gettext("%llu filesystems upgraded\n"),
2129 cb.cb_numupgraded);
2130 if (cb.cb_numsamegraded) {
2131 (void) printf(gettext("%llu filesystems already at "
2132 "this version\n"),
2133 cb.cb_numsamegraded);
2134 }
2135 if (cb.cb_numfailed != 0)
2136 ret = 1;
2137 } else {
2138 /* List old-version filesytems */
2139 boolean_t found;
2140 (void) printf(gettext("This system is currently running "
2141 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2142
2143 flags |= ZFS_ITER_RECURSE;
2144 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2145 NULL, NULL, 0, upgrade_list_callback, &cb);
2146
2147 found = cb.cb_foundone;
2148 cb.cb_foundone = B_FALSE;
2149 cb.cb_newer = B_TRUE;
2150
2151 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2152 NULL, NULL, 0, upgrade_list_callback, &cb);
2153
2154 if (!cb.cb_foundone && !found) {
2155 (void) printf(gettext("All filesystems are "
2156 "formatted with the current version.\n"));
2157 }
2158 }
2159
2160 return (ret);
2161 }
2162
2163 /*
2164 * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2165 * [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2166 * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2167 * [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2168 *
2169 * -H Scripted mode; elide headers and separate columns by tabs.
2170 * -i Translate SID to POSIX ID.
2171 * -n Print numeric ID instead of user/group name.
2172 * -o Control which fields to display.
2173 * -p Use exact (parsable) numeric output.
2174 * -s Specify sort columns, descending order.
2175 * -S Specify sort columns, ascending order.
2176 * -t Control which object types to display.
2177 *
2178 * Displays space consumed by, and quotas on, each user in the specified
2179 * filesystem or snapshot.
2180 */
2181
2182 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2183 enum us_field_types {
2184 USFIELD_TYPE,
2185 USFIELD_NAME,
2186 USFIELD_USED,
2187 USFIELD_QUOTA
2188 };
2189 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA" };
2190 static char *us_field_names[] = { "type", "name", "used", "quota" };
2191 #define USFIELD_LAST (sizeof (us_field_names) / sizeof (char *))
2192
2193 #define USTYPE_PSX_GRP (1 << 0)
2194 #define USTYPE_PSX_USR (1 << 1)
2195 #define USTYPE_SMB_GRP (1 << 2)
2196 #define USTYPE_SMB_USR (1 << 3)
2197 #define USTYPE_ALL \
2198 (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR)
2199
2200 static int us_type_bits[] = {
2201 USTYPE_PSX_GRP,
2202 USTYPE_PSX_USR,
2203 USTYPE_SMB_GRP,
2204 USTYPE_SMB_USR,
2205 USTYPE_ALL
2206 };
2207 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2208 "smbuser", "all" };
2209
2210 typedef struct us_node {
2211 nvlist_t *usn_nvl;
2212 uu_avl_node_t usn_avlnode;
2213 uu_list_node_t usn_listnode;
2214 } us_node_t;
2215
2216 typedef struct us_cbdata {
2217 nvlist_t **cb_nvlp;
2218 uu_avl_pool_t *cb_avl_pool;
2219 uu_avl_t *cb_avl;
2220 boolean_t cb_numname;
2221 boolean_t cb_nicenum;
2222 boolean_t cb_sid2posix;
2223 zfs_userquota_prop_t cb_prop;
2224 zfs_sort_column_t *cb_sortcol;
2225 size_t cb_width[USFIELD_LAST];
2226 } us_cbdata_t;
2227
2228 static boolean_t us_populated = B_FALSE;
2229
2230 typedef struct {
2231 zfs_sort_column_t *si_sortcol;
2232 boolean_t si_numname;
2233 } us_sort_info_t;
2234
2235 static int
2236 us_field_index(char *field)
2237 {
2238 int i;
2239
2240 for (i = 0; i < USFIELD_LAST; i++) {
2241 if (strcmp(field, us_field_names[i]) == 0)
2242 return (i);
2243 }
2244
2245 return (-1);
2246 }
2247
2248 static int
2249 us_compare(const void *larg, const void *rarg, void *unused)
2250 {
2251 const us_node_t *l = larg;
2252 const us_node_t *r = rarg;
2253 us_sort_info_t *si = (us_sort_info_t *)unused;
2254 zfs_sort_column_t *sortcol = si->si_sortcol;
2255 boolean_t numname = si->si_numname;
2256 nvlist_t *lnvl = l->usn_nvl;
2257 nvlist_t *rnvl = r->usn_nvl;
2258 int rc = 0;
2259 boolean_t lvb, rvb;
2260
2261 for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2262 char *lvstr = "";
2263 char *rvstr = "";
2264 uint32_t lv32 = 0;
2265 uint32_t rv32 = 0;
2266 uint64_t lv64 = 0;
2267 uint64_t rv64 = 0;
2268 zfs_prop_t prop = sortcol->sc_prop;
2269 const char *propname = NULL;
2270 boolean_t reverse = sortcol->sc_reverse;
2271
2272 switch (prop) {
2273 case ZFS_PROP_TYPE:
2274 propname = "type";
2275 (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2276 (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2277 if (rv32 != lv32)
2278 rc = (rv32 < lv32) ? 1 : -1;
2279 break;
2280 case ZFS_PROP_NAME:
2281 propname = "name";
2282 if (numname) {
2283 (void) nvlist_lookup_uint64(lnvl, propname,
2284 &lv64);
2285 (void) nvlist_lookup_uint64(rnvl, propname,
2286 &rv64);
2287 if (rv64 != lv64)
2288 rc = (rv64 < lv64) ? 1 : -1;
2289 } else {
2290 (void) nvlist_lookup_string(lnvl, propname,
2291 &lvstr);
2292 (void) nvlist_lookup_string(rnvl, propname,
2293 &rvstr);
2294 rc = strcmp(lvstr, rvstr);
2295 }
2296 break;
2297 case ZFS_PROP_USED:
2298 case ZFS_PROP_QUOTA:
2299 if (!us_populated)
2300 break;
2301 if (prop == ZFS_PROP_USED)
2302 propname = "used";
2303 else
2304 propname = "quota";
2305 (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2306 (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2307 if (rv64 != lv64)
2308 rc = (rv64 < lv64) ? 1 : -1;
2309 break;
2310 }
2311
2312 if (rc != 0) {
2313 if (rc < 0)
2314 return (reverse ? 1 : -1);
2315 else
2316 return (reverse ? -1 : 1);
2317 }
2318 }
2319
2320 /*
2321 * If entries still seem to be the same, check if they are of the same
2322 * type (smbentity is added only if we are doing SID to POSIX ID
2323 * translation where we can have duplicate type/name combinations).
2324 */
2325 if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2326 nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2327 lvb != rvb)
2328 return (lvb < rvb ? -1 : 1);
2329
2330 return (0);
2331 }
2332
2333 static inline const char *
2334 us_type2str(unsigned field_type)
2335 {
2336 switch (field_type) {
2337 case USTYPE_PSX_USR:
2338 return ("POSIX User");
2339 case USTYPE_PSX_GRP:
2340 return ("POSIX Group");
2341 case USTYPE_SMB_USR:
2342 return ("SMB User");
2343 case USTYPE_SMB_GRP:
2344 return ("SMB Group");
2345 default:
2346 return ("Undefined");
2347 }
2348 }
2349
2350 static int
2351 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2352 {
2353 us_cbdata_t *cb = (us_cbdata_t *)arg;
2354 zfs_userquota_prop_t prop = cb->cb_prop;
2355 char *name = NULL;
2356 char *propname;
2357 char sizebuf[32];
2358 us_node_t *node;
2359 uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2360 uu_avl_t *avl = cb->cb_avl;
2361 uu_avl_index_t idx;
2362 nvlist_t *props;
2363 us_node_t *n;
2364 zfs_sort_column_t *sortcol = cb->cb_sortcol;
2365 unsigned type;
2366 const char *typestr;
2367 size_t namelen;
2368 size_t typelen;
2369 size_t sizelen;
2370 int typeidx, nameidx, sizeidx;
2371 us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2372 boolean_t smbentity = B_FALSE;
2373
2374 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2375 nomem();
2376 node = safe_malloc(sizeof (us_node_t));
2377 uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2378 node->usn_nvl = props;
2379
2380 if (domain != NULL && domain[0] != '\0') {
2381 /* SMB */
2382 char sid[ZFS_MAXNAMELEN + 32];
2383 uid_t id;
2384 int err;
2385 int flag = IDMAP_REQ_FLG_USE_CACHE;
2386
2387 smbentity = B_TRUE;
2388
2389 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2390
2391 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2392 type = USTYPE_SMB_GRP;
2393 err = sid_to_id(sid, B_FALSE, &id);
2394 } else {
2395 type = USTYPE_SMB_USR;
2396 err = sid_to_id(sid, B_TRUE, &id);
2397 }
2398
2399 if (err == 0) {
2400 rid = id;
2401 if (!cb->cb_sid2posix) {
2402 if (type == USTYPE_SMB_USR) {
2403 (void) idmap_getwinnamebyuid(rid, flag,
2404 &name, NULL);
2405 } else {
2406 (void) idmap_getwinnamebygid(rid, flag,
2407 &name, NULL);
2408 }
2409 if (name == NULL)
2410 name = sid;
2411 }
2412 }
2413 }
2414
2415 if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2416 /* POSIX or -i */
2417 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2418 type = USTYPE_PSX_GRP;
2419 if (!cb->cb_numname) {
2420 struct group *g;
2421
2422 if ((g = getgrgid(rid)) != NULL)
2423 name = g->gr_name;
2424 }
2425 } else {
2426 type = USTYPE_PSX_USR;
2427 if (!cb->cb_numname) {
2428 struct passwd *p;
2429
2430 if ((p = getpwuid(rid)) != NULL)
2431 name = p->pw_name;
2432 }
2433 }
2434 }
2435
2436 /*
2437 * Make sure that the type/name combination is unique when doing
2438 * SID to POSIX ID translation (hence changing the type from SMB to
2439 * POSIX).
2440 */
2441 if (cb->cb_sid2posix &&
2442 nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2443 nomem();
2444
2445 /* Calculate/update width of TYPE field */
2446 typestr = us_type2str(type);
2447 typelen = strlen(gettext(typestr));
2448 typeidx = us_field_index("type");
2449 if (typelen > cb->cb_width[typeidx])
2450 cb->cb_width[typeidx] = typelen;
2451 if (nvlist_add_uint32(props, "type", type) != 0)
2452 nomem();
2453
2454 /* Calculate/update width of NAME field */
2455 if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2456 if (nvlist_add_uint64(props, "name", rid) != 0)
2457 nomem();
2458 namelen = snprintf(NULL, 0, "%u", rid);
2459 } else {
2460 if (nvlist_add_string(props, "name", name) != 0)
2461 nomem();
2462 namelen = strlen(name);
2463 }
2464 nameidx = us_field_index("name");
2465 if (namelen > cb->cb_width[nameidx])
2466 cb->cb_width[nameidx] = namelen;
2467
2468 /*
2469 * Check if this type/name combination is in the list and update it;
2470 * otherwise add new node to the list.
2471 */
2472 if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2473 uu_avl_insert(avl, node, idx);
2474 } else {
2475 nvlist_free(props);
2476 free(node);
2477 node = n;
2478 props = node->usn_nvl;
2479 }
2480
2481 /* Calculate/update width of USED/QUOTA fields */
2482 if (cb->cb_nicenum)
2483 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2484 else
2485 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu", space);
2486 sizelen = strlen(sizebuf);
2487 if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED) {
2488 propname = "used";
2489 if (!nvlist_exists(props, "quota"))
2490 (void) nvlist_add_uint64(props, "quota", 0);
2491 } else {
2492 propname = "quota";
2493 if (!nvlist_exists(props, "used"))
2494 (void) nvlist_add_uint64(props, "used", 0);
2495 }
2496 sizeidx = us_field_index(propname);
2497 if (sizelen > cb->cb_width[sizeidx])
2498 cb->cb_width[sizeidx] = sizelen;
2499
2500 if (nvlist_add_uint64(props, propname, space) != 0)
2501 nomem();
2502
2503 return (0);
2504 }
2505
2506 static void
2507 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2508 size_t *width, us_node_t *node)
2509 {
2510 nvlist_t *nvl = node->usn_nvl;
2511 char valstr[ZFS_MAXNAMELEN];
2512 boolean_t first = B_TRUE;
2513 int cfield = 0;
2514 int field;
2515 uint32_t ustype;
2516
2517 /* Check type */
2518 (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2519 if (!(ustype & types))
2520 return;
2521
2522 while ((field = fields[cfield]) != USFIELD_LAST) {
2523 nvpair_t *nvp = NULL;
2524 data_type_t type;
2525 uint32_t val32;
2526 uint64_t val64;
2527 char *strval = NULL;
2528
2529 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2530 if (strcmp(nvpair_name(nvp),
2531 us_field_names[field]) == 0)
2532 break;
2533 }
2534
2535 type = nvpair_type(nvp);
2536 switch (type) {
2537 case DATA_TYPE_UINT32:
2538 (void) nvpair_value_uint32(nvp, &val32);
2539 break;
2540 case DATA_TYPE_UINT64:
2541 (void) nvpair_value_uint64(nvp, &val64);
2542 break;
2543 case DATA_TYPE_STRING:
2544 (void) nvpair_value_string(nvp, &strval);
2545 break;
2546 default:
2547 (void) fprintf(stderr, "invalid data type\n");
2548 }
2549
2550 switch (field) {
2551 case USFIELD_TYPE:
2552 strval = (char *)us_type2str(val32);
2553 break;
2554 case USFIELD_NAME:
2555 if (type == DATA_TYPE_UINT64) {
2556 (void) sprintf(valstr, "%llu", val64);
2557 strval = valstr;
2558 }
2559 break;
2560 case USFIELD_USED:
2561 case USFIELD_QUOTA:
2562 if (type == DATA_TYPE_UINT64) {
2563 if (parsable) {
2564 (void) sprintf(valstr, "%llu", val64);
2565 } else {
2566 zfs_nicenum(val64, valstr,
2567 sizeof (valstr));
2568 }
2569 if (field == USFIELD_QUOTA &&
2570 strcmp(valstr, "0") == 0)
2571 strval = "none";
2572 else
2573 strval = valstr;
2574 }
2575 break;
2576 }
2577
2578 if (!first) {
2579 if (scripted)
2580 (void) printf("\t");
2581 else
2582 (void) printf(" ");
2583 }
2584 if (scripted)
2585 (void) printf("%s", strval);
2586 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2587 (void) printf("%-*s", width[field], strval);
2588 else
2589 (void) printf("%*s", width[field], strval);
2590
2591 first = B_FALSE;
2592 cfield++;
2593 }
2594
2595 (void) printf("\n");
2596 }
2597
2598 static void
2599 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2600 size_t *width, boolean_t rmnode, uu_avl_t *avl)
2601 {
2602 us_node_t *node;
2603 const char *col;
2604 int cfield = 0;
2605 int field;
2606
2607 if (!scripted) {
2608 boolean_t first = B_TRUE;
2609
2610 while ((field = fields[cfield]) != USFIELD_LAST) {
2611 col = gettext(us_field_hdr[field]);
2612 if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2613 (void) printf(first ? "%-*s" : " %-*s",
2614 width[field], col);
2615 } else {
2616 (void) printf(first ? "%*s" : " %*s",
2617 width[field], col);
2618 }
2619 first = B_FALSE;
2620 cfield++;
2621 }
2622 (void) printf("\n");
2623 }
2624
2625 for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2626 print_us_node(scripted, parsable, fields, types, width, node);
2627 if (rmnode)
2628 nvlist_free(node->usn_nvl);
2629 }
2630 }
2631
2632 static int
2633 zfs_do_userspace(int argc, char **argv)
2634 {
2635 zfs_handle_t *zhp;
2636 zfs_userquota_prop_t p;
2637 uu_avl_pool_t *avl_pool;
2638 uu_avl_t *avl_tree;
2639 uu_avl_walk_t *walk;
2640 char *delim;
2641 char deffields[] = "type,name,used,quota";
2642 char *ofield = NULL;
2643 char *tfield = NULL;
2644 int cfield = 0;
2645 int fields[256];
2646 int i;
2647 boolean_t scripted = B_FALSE;
2648 boolean_t prtnum = B_FALSE;
2649 boolean_t parsable = B_FALSE;
2650 boolean_t sid2posix = B_FALSE;
2651 int ret = 0;
2652 int c;
2653 zfs_sort_column_t *sortcol = NULL;
2654 int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2655 us_cbdata_t cb;
2656 us_node_t *node;
2657 us_node_t *rmnode;
2658 uu_list_pool_t *listpool;
2659 uu_list_t *list;
2660 uu_avl_index_t idx = 0;
2661 uu_list_index_t idx2 = 0;
2662
2663 if (argc < 2)
2664 usage(B_FALSE);
2665
2666 if (strcmp(argv[0], "groupspace") == 0)
2667 /* Toggle default group types */
2668 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2669
2670 while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2671 switch (c) {
2672 case 'n':
2673 prtnum = B_TRUE;
2674 break;
2675 case 'H':
2676 scripted = B_TRUE;
2677 break;
2678 case 'p':
2679 parsable = B_TRUE;
2680 break;
2681 case 'o':
2682 ofield = optarg;
2683 break;
2684 case 's':
2685 case 'S':
2686 if (zfs_add_sort_column(&sortcol, optarg,
2687 c == 's' ? B_FALSE : B_TRUE) != 0) {
2688 (void) fprintf(stderr,
2689 gettext("invalid field '%s'\n"), optarg);
2690 usage(B_FALSE);
2691 }
2692 break;
2693 case 't':
2694 tfield = optarg;
2695 break;
2696 case 'i':
2697 sid2posix = B_TRUE;
2698 break;
2699 case ':':
2700 (void) fprintf(stderr, gettext("missing argument for "
2701 "'%c' option\n"), optopt);
2702 usage(B_FALSE);
2703 break;
2704 case '?':
2705 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2706 optopt);
2707 usage(B_FALSE);
2708 }
2709 }
2710
2711 argc -= optind;
2712 argv += optind;
2713
2714 if (argc < 1) {
2715 (void) fprintf(stderr, gettext("missing dataset name\n"));
2716 usage(B_FALSE);
2717 }
2718 if (argc > 1) {
2719 (void) fprintf(stderr, gettext("too many arguments\n"));
2720 usage(B_FALSE);
2721 }
2722
2723 /* Use default output fields if not specified using -o */
2724 if (ofield == NULL)
2725 ofield = deffields;
2726 do {
2727 if ((delim = strchr(ofield, ',')) != NULL)
2728 *delim = '\0';
2729 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
2730 (void) fprintf(stderr, gettext("invalid type '%s' "
2731 "for -o option\n"), ofield);
2732 return (-1);
2733 }
2734 if (delim != NULL)
2735 ofield = delim + 1;
2736 } while (delim != NULL);
2737 fields[cfield] = USFIELD_LAST;
2738
2739 /* Override output types (-t option) */
2740 if (tfield != NULL) {
2741 types = 0;
2742
2743 do {
2744 boolean_t found = B_FALSE;
2745
2746 if ((delim = strchr(tfield, ',')) != NULL)
2747 *delim = '\0';
2748 for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
2749 i++) {
2750 if (strcmp(tfield, us_type_names[i]) == 0) {
2751 found = B_TRUE;
2752 types |= us_type_bits[i];
2753 break;
2754 }
2755 }
2756 if (!found) {
2757 (void) fprintf(stderr, gettext("invalid type "
2758 "'%s' for -t option\n"), tfield);
2759 return (-1);
2760 }
2761 if (delim != NULL)
2762 tfield = delim + 1;
2763 } while (delim != NULL);
2764 }
2765
2766 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
2767 return (1);
2768
2769 if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
2770 offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
2771 nomem();
2772 if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
2773 nomem();
2774
2775 /* Always add default sorting columns */
2776 (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
2777 (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
2778
2779 cb.cb_sortcol = sortcol;
2780 cb.cb_numname = prtnum;
2781 cb.cb_nicenum = !parsable;
2782 cb.cb_avl_pool = avl_pool;
2783 cb.cb_avl = avl_tree;
2784 cb.cb_sid2posix = sid2posix;
2785
2786 for (i = 0; i < USFIELD_LAST; i++)
2787 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
2788
2789 for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
2790 if (((p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA) &&
2791 !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
2792 ((p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) &&
2793 !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))))
2794 continue;
2795 cb.cb_prop = p;
2796 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
2797 return (ret);
2798 }
2799
2800 /* Sort the list */
2801 if ((node = uu_avl_first(avl_tree)) == NULL)
2802 return (0);
2803
2804 us_populated = B_TRUE;
2805
2806 listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
2807 offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
2808 list = uu_list_create(listpool, NULL, UU_DEFAULT);
2809 uu_list_node_init(node, &node->usn_listnode, listpool);
2810
2811 while (node != NULL) {
2812 rmnode = node;
2813 node = uu_avl_next(avl_tree, node);
2814 uu_avl_remove(avl_tree, rmnode);
2815 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
2816 uu_list_insert(list, rmnode, idx2);
2817 }
2818
2819 for (node = uu_list_first(list); node != NULL;
2820 node = uu_list_next(list, node)) {
2821 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
2822
2823 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
2824 uu_avl_insert(avl_tree, node, idx);
2825 }
2826
2827 uu_list_destroy(list);
2828 uu_list_pool_destroy(listpool);
2829
2830 /* Print and free node nvlist memory */
2831 print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
2832 cb.cb_avl);
2833
2834 zfs_free_sort_columns(sortcol);
2835
2836 /* Clean up the AVL tree */
2837 if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
2838 nomem();
2839
2840 while ((node = uu_avl_walk_next(walk)) != NULL) {
2841 uu_avl_remove(cb.cb_avl, node);
2842 free(node);
2843 }
2844
2845 uu_avl_walk_end(walk);
2846 uu_avl_destroy(avl_tree);
2847 uu_avl_pool_destroy(avl_pool);
2848
2849 return (ret);
2850 }
2851
2852 /*
2853 * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property] ...
2854 * [-t type[,...]] [filesystem|volume|snapshot] ...
2855 *
2856 * -H Scripted mode; elide headers and separate columns by tabs.
2857 * -p Display values in parsable (literal) format.
2858 * -r Recurse over all children.
2859 * -d Limit recursion by depth.
2860 * -o Control which fields to display.
2861 * -s Specify sort columns, descending order.
2862 * -S Specify sort columns, ascending order.
2863 * -t Control which object types to display.
2864 *
2865 * When given no arguments, list all filesystems in the system.
2866 * Otherwise, list the specified datasets, optionally recursing down them if
2867 * '-r' is specified.
2868 */
2869 typedef struct list_cbdata {
2870 boolean_t cb_first;
2871 boolean_t cb_literal;
2872 boolean_t cb_scripted;
2873 zprop_list_t *cb_proplist;
2874 } list_cbdata_t;
2875
2876 /*
2877 * Given a list of columns to display, output appropriate headers for each one.
2878 */
2879 static void
2880 print_header(list_cbdata_t *cb)
2881 {
2882 zprop_list_t *pl = cb->cb_proplist;
2883 char headerbuf[ZFS_MAXPROPLEN];
2884 const char *header;
2885 int i;
2886 boolean_t first = B_TRUE;
2887 boolean_t right_justify;
2888
2889 for (; pl != NULL; pl = pl->pl_next) {
2890 if (!first) {
2891 (void) printf(" ");
2892 } else {
2893 first = B_FALSE;
2894 }
2895
2896 right_justify = B_FALSE;
2897 if (pl->pl_prop != ZPROP_INVAL) {
2898 header = zfs_prop_column_name(pl->pl_prop);
2899 right_justify = zfs_prop_align_right(pl->pl_prop);
2900 } else {
2901 for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
2902 headerbuf[i] = toupper(pl->pl_user_prop[i]);
2903 headerbuf[i] = '\0';
2904 header = headerbuf;
2905 }
2906
2907 if (pl->pl_next == NULL && !right_justify)
2908 (void) printf("%s", header);
2909 else if (right_justify)
2910 (void) printf("%*s", pl->pl_width, header);
2911 else
2912 (void) printf("%-*s", pl->pl_width, header);
2913 }
2914
2915 (void) printf("\n");
2916 }
2917
2918 /*
2919 * Given a dataset and a list of fields, print out all the properties according
2920 * to the described layout.
2921 */
2922 static void
2923 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
2924 {
2925 zprop_list_t *pl = cb->cb_proplist;
2926 boolean_t first = B_TRUE;
2927 char property[ZFS_MAXPROPLEN];
2928 nvlist_t *userprops = zfs_get_user_props(zhp);
2929 nvlist_t *propval;
2930 char *propstr;
2931 boolean_t right_justify;
2932
2933 for (; pl != NULL; pl = pl->pl_next) {
2934 if (!first) {
2935 if (cb->cb_scripted)
2936 (void) printf("\t");
2937 else
2938 (void) printf(" ");
2939 } else {
2940 first = B_FALSE;
2941 }
2942
2943 if (pl->pl_prop != ZPROP_INVAL) {
2944 if (zfs_prop_get(zhp, pl->pl_prop, property,
2945 sizeof (property), NULL, NULL, 0,
2946 cb->cb_literal) != 0)
2947 propstr = "-";
2948 else
2949 propstr = property;
2950 right_justify = zfs_prop_align_right(pl->pl_prop);
2951 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
2952 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
2953 property, sizeof (property), cb->cb_literal) != 0)
2954 propstr = "-";
2955 else
2956 propstr = property;
2957 right_justify = B_TRUE;
2958 } else if (zfs_prop_written(pl->pl_user_prop)) {
2959 if (zfs_prop_get_written(zhp, pl->pl_user_prop,
2960 property, sizeof (property), cb->cb_literal) != 0)
2961 propstr = "-";
2962 else
2963 propstr = property;
2964 right_justify = B_TRUE;
2965 } else {
2966 if (nvlist_lookup_nvlist(userprops,
2967 pl->pl_user_prop, &propval) != 0)
2968 propstr = "-";
2969 else
2970 verify(nvlist_lookup_string(propval,
2971 ZPROP_VALUE, &propstr) == 0);
2972 right_justify = B_FALSE;
2973 }
2974
2975 /*
2976 * If this is being called in scripted mode, or if this is the
2977 * last column and it is left-justified, don't include a width
2978 * format specifier.
2979 */
2980 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
2981 (void) printf("%s", propstr);
2982 else if (right_justify)
2983 (void) printf("%*s", pl->pl_width, propstr);
2984 else
2985 (void) printf("%-*s", pl->pl_width, propstr);
2986 }
2987
2988 (void) printf("\n");
2989 }
2990
2991 /*
2992 * Generic callback function to list a dataset or snapshot.
2993 */
2994 static int
2995 list_callback(zfs_handle_t *zhp, void *data)
2996 {
2997 list_cbdata_t *cbp = data;
2998
2999 if (cbp->cb_first) {
3000 if (!cbp->cb_scripted)
3001 print_header(cbp);
3002 cbp->cb_first = B_FALSE;
3003 }
3004
3005 print_dataset(zhp, cbp);
3006
3007 return (0);
3008 }
3009
3010 static int
3011 zfs_do_list(int argc, char **argv)
3012 {
3013 int c;
3014 static char default_fields[] =
3015 "name,used,available,referenced,mountpoint";
3016 int types = ZFS_TYPE_DATASET;
3017 boolean_t types_specified = B_FALSE;
3018 char *fields = NULL;
3019 list_cbdata_t cb = { 0 };
3020 char *value;
3021 int limit = 0;
3022 int ret = 0;
3023 zfs_sort_column_t *sortcol = NULL;
3024 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3025
3026 /* check options */
3027 while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3028 switch (c) {
3029 case 'o':
3030 fields = optarg;
3031 break;
3032 case 'p':
3033 cb.cb_literal = B_TRUE;
3034 flags |= ZFS_ITER_LITERAL_PROPS;
3035 break;
3036 case 'd':
3037 limit = parse_depth(optarg, &flags);
3038 break;
3039 case 'r':
3040 flags |= ZFS_ITER_RECURSE;
3041 break;
3042 case 'H':
3043 cb.cb_scripted = B_TRUE;
3044 break;
3045 case 's':
3046 if (zfs_add_sort_column(&sortcol, optarg,
3047 B_FALSE) != 0) {
3048 (void) fprintf(stderr,
3049 gettext("invalid property '%s'\n"), optarg);
3050 usage(B_FALSE);
3051 }
3052 break;
3053 case 'S':
3054 if (zfs_add_sort_column(&sortcol, optarg,
3055 B_TRUE) != 0) {
3056 (void) fprintf(stderr,
3057 gettext("invalid property '%s'\n"), optarg);
3058 usage(B_FALSE);
3059 }
3060 break;
3061 case 't':
3062 types = 0;
3063 types_specified = B_TRUE;
3064 flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3065 while (*optarg != '\0') {
3066 static char *type_subopts[] = { "filesystem",
3067 "volume", "snapshot", "snap", "bookmark",
3068 "all", NULL };
3069
3070 switch (getsubopt(&optarg, type_subopts,
3071 &value)) {
3072 case 0:
3073 types |= ZFS_TYPE_FILESYSTEM;
3074 break;
3075 case 1:
3076 types |= ZFS_TYPE_VOLUME;
3077 break;
3078 case 2:
3079 case 3:
3080 types |= ZFS_TYPE_SNAPSHOT;
3081 break;
3082 case 4:
3083 types |= ZFS_TYPE_BOOKMARK;
3084 break;
3085 case 5:
3086 types = ZFS_TYPE_DATASET |
3087 ZFS_TYPE_BOOKMARK;
3088 break;
3089 default:
3090 (void) fprintf(stderr,
3091 gettext("invalid type '%s'\n"),
3092 value);
3093 usage(B_FALSE);
3094 }
3095 }
3096 break;
3097 case ':':
3098 (void) fprintf(stderr, gettext("missing argument for "
3099 "'%c' option\n"), optopt);
3100 usage(B_FALSE);
3101 break;
3102 case '?':
3103 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3104 optopt);
3105 usage(B_FALSE);
3106 }
3107 }
3108
3109 argc -= optind;
3110 argv += optind;
3111
3112 if (fields == NULL)
3113 fields = default_fields;
3114
3115 /*
3116 * If "-o space" and no types were specified, don't display snapshots.
3117 */
3118 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3119 types &= ~ZFS_TYPE_SNAPSHOT;
3120
3121 /*
3122 * If the user specifies '-o all', the zprop_get_list() doesn't
3123 * normally include the name of the dataset. For 'zfs list', we always
3124 * want this property to be first.
3125 */
3126 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3127 != 0)
3128 usage(B_FALSE);
3129
3130 cb.cb_first = B_TRUE;
3131
3132 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3133 limit, list_callback, &cb);
3134
3135 zprop_free_list(cb.cb_proplist);
3136 zfs_free_sort_columns(sortcol);
3137
3138 if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3139 (void) printf(gettext("no datasets available\n"));
3140
3141 return (ret);
3142 }
3143
3144 /*
3145 * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3146 * zfs rename [-f] -p <fs | vol> <fs | vol>
3147 * zfs rename -r <snap> <snap>
3148 *
3149 * Renames the given dataset to another of the same type.
3150 *
3151 * The '-p' flag creates all the non-existing ancestors of the target first.
3152 */
3153 /* ARGSUSED */
3154 static int
3155 zfs_do_rename(int argc, char **argv)
3156 {
3157 zfs_handle_t *zhp;
3158 int c;
3159 int ret = 0;
3160 boolean_t recurse = B_FALSE;
3161 boolean_t parents = B_FALSE;
3162 boolean_t force_unmount = B_FALSE;
3163
3164 /* check options */
3165 while ((c = getopt(argc, argv, "prf")) != -1) {
3166 switch (c) {
3167 case 'p':
3168 parents = B_TRUE;
3169 break;
3170 case 'r':
3171 recurse = B_TRUE;
3172 break;
3173 case 'f':
3174 force_unmount = B_TRUE;
3175 break;
3176 case '?':
3177 default:
3178 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3179 optopt);
3180 usage(B_FALSE);
3181 }
3182 }
3183
3184 argc -= optind;
3185 argv += optind;
3186
3187 /* check number of arguments */
3188 if (argc < 1) {
3189 (void) fprintf(stderr, gettext("missing source dataset "
3190 "argument\n"));
3191 usage(B_FALSE);
3192 }
3193 if (argc < 2) {
3194 (void) fprintf(stderr, gettext("missing target dataset "
3195 "argument\n"));
3196 usage(B_FALSE);
3197 }
3198 if (argc > 2) {
3199 (void) fprintf(stderr, gettext("too many arguments\n"));
3200 usage(B_FALSE);
3201 }
3202
3203 if (recurse && parents) {
3204 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3205 "exclusive\n"));
3206 usage(B_FALSE);
3207 }
3208
3209 if (recurse && strchr(argv[0], '@') == 0) {
3210 (void) fprintf(stderr, gettext("source dataset for recursive "
3211 "rename must be a snapshot\n"));
3212 usage(B_FALSE);
3213 }
3214
3215 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM |
3216 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL)
3217 return (1);
3218
3219 /* If we were asked and the name looks good, try to create ancestors. */
3220 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3221 zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3222 zfs_close(zhp);
3223 return (1);
3224 }
3225
3226 ret = (zfs_rename(zhp, argv[1], recurse, force_unmount) != 0);
3227
3228 zfs_close(zhp);
3229 return (ret);
3230 }
3231
3232 /*
3233 * zfs promote <fs>
3234 *
3235 * Promotes the given clone fs to be the parent
3236 */
3237 /* ARGSUSED */
3238 static int
3239 zfs_do_promote(int argc, char **argv)
3240 {
3241 zfs_handle_t *zhp;
3242 int ret = 0;
3243
3244 /* check options */
3245 if (argc > 1 && argv[1][0] == '-') {
3246 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3247 argv[1][1]);
3248 usage(B_FALSE);
3249 }
3250
3251 /* check number of arguments */
3252 if (argc < 2) {
3253 (void) fprintf(stderr, gettext("missing clone filesystem"
3254 " argument\n"));
3255 usage(B_FALSE);
3256 }
3257 if (argc > 2) {
3258 (void) fprintf(stderr, gettext("too many arguments\n"));
3259 usage(B_FALSE);
3260 }
3261
3262 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3263 if (zhp == NULL)
3264 return (1);
3265
3266 ret = (zfs_promote(zhp) != 0);
3267
3268
3269 zfs_close(zhp);
3270 return (ret);
3271 }
3272
3273 /*
3274 * zfs rollback [-rRf] <snapshot>
3275 *
3276 * -r Delete any intervening snapshots before doing rollback
3277 * -R Delete any snapshots and their clones
3278 * -f ignored for backwards compatability
3279 *
3280 * Given a filesystem, rollback to a specific snapshot, discarding any changes
3281 * since then and making it the active dataset. If more recent snapshots exist,
3282 * the command will complain unless the '-r' flag is given.
3283 */
3284 typedef struct rollback_cbdata {
3285 uint64_t cb_create;
3286 boolean_t cb_first;
3287 int cb_doclones;
3288 char *cb_target;
3289 int cb_error;
3290 boolean_t cb_recurse;
3291 } rollback_cbdata_t;
3292
3293 static int
3294 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3295 {
3296 rollback_cbdata_t *cbp = data;
3297
3298 if (cbp->cb_first && cbp->cb_recurse) {
3299 (void) fprintf(stderr, gettext("cannot rollback to "
3300 "'%s': clones of previous snapshots exist\n"),
3301 cbp->cb_target);
3302 (void) fprintf(stderr, gettext("use '-R' to "
3303 "force deletion of the following clones and "
3304 "dependents:\n"));
3305 cbp->cb_first = 0;
3306 cbp->cb_error = 1;
3307 }
3308
3309 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3310
3311 zfs_close(zhp);
3312 return (0);
3313 }
3314
3315 /*
3316 * Report any snapshots more recent than the one specified. Used when '-r' is
3317 * not specified. We reuse this same callback for the snapshot dependents - if
3318 * 'cb_dependent' is set, then this is a dependent and we should report it
3319 * without checking the transaction group.
3320 */
3321 static int
3322 rollback_check(zfs_handle_t *zhp, void *data)
3323 {
3324 rollback_cbdata_t *cbp = data;
3325
3326 if (cbp->cb_doclones) {
3327 zfs_close(zhp);
3328 return (0);
3329 }
3330
3331 if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3332 if (cbp->cb_first && !cbp->cb_recurse) {
3333 (void) fprintf(stderr, gettext("cannot "
3334 "rollback to '%s': more recent snapshots "
3335 "or bookmarks exist\n"),
3336 cbp->cb_target);
3337 (void) fprintf(stderr, gettext("use '-r' to "
3338 "force deletion of the following "
3339 "snapshots and bookmarks:\n"));
3340 cbp->cb_first = 0;
3341 cbp->cb_error = 1;
3342 }
3343
3344 if (cbp->cb_recurse) {
3345 if (zfs_iter_dependents(zhp, B_TRUE,
3346 rollback_check_dependent, cbp) != 0) {
3347 zfs_close(zhp);
3348 return (-1);
3349 }
3350 } else {
3351 (void) fprintf(stderr, "%s\n",
3352 zfs_get_name(zhp));
3353 }
3354 }
3355 zfs_close(zhp);
3356 return (0);
3357 }
3358
3359 static int
3360 zfs_do_rollback(int argc, char **argv)
3361 {
3362 int ret = 0;
3363 int c;
3364 boolean_t force = B_FALSE;
3365 rollback_cbdata_t cb = { 0 };
3366 zfs_handle_t *zhp, *snap;
3367 char parentname[ZFS_MAXNAMELEN];
3368 char *delim;
3369
3370 /* check options */
3371 while ((c = getopt(argc, argv, "rRf")) != -1) {
3372 switch (c) {
3373 case 'r':
3374 cb.cb_recurse = 1;
3375 break;
3376 case 'R':
3377 cb.cb_recurse = 1;
3378 cb.cb_doclones = 1;
3379 break;
3380 case 'f':
3381 force = B_TRUE;
3382 break;
3383 case '?':
3384 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3385 optopt);
3386 usage(B_FALSE);
3387 }
3388 }
3389
3390 argc -= optind;
3391 argv += optind;
3392
3393 /* check number of arguments */
3394 if (argc < 1) {
3395 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3396 usage(B_FALSE);
3397 }
3398 if (argc > 1) {
3399 (void) fprintf(stderr, gettext("too many arguments\n"));
3400 usage(B_FALSE);
3401 }
3402
3403 /* open the snapshot */
3404 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3405 return (1);
3406
3407 /* open the parent dataset */
3408 (void) strlcpy(parentname, argv[0], sizeof (parentname));
3409 verify((delim = strrchr(parentname, '@')) != NULL);
3410 *delim = '\0';
3411 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3412 zfs_close(snap);
3413 return (1);
3414 }
3415
3416 /*
3417 * Check for more recent snapshots and/or clones based on the presence
3418 * of '-r' and '-R'.
3419 */
3420 cb.cb_target = argv[0];
3421 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3422 cb.cb_first = B_TRUE;
3423 cb.cb_error = 0;
3424 if ((ret = zfs_iter_snapshots(zhp, rollback_check, &cb)) != 0)
3425 goto out;
3426 if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
3427 goto out;
3428
3429 if ((ret = cb.cb_error) != 0)
3430 goto out;
3431
3432 /*
3433 * Rollback parent to the given snapshot.
3434 */
3435 ret = zfs_rollback(zhp, snap, force);
3436
3437 out:
3438 zfs_close(snap);
3439 zfs_close(zhp);
3440
3441 if (ret == 0)
3442 return (0);
3443 else
3444 return (1);
3445 }
3446
3447 /*
3448 * zfs set property=value ... { fs | snap | vol } ...
3449 *
3450 * Sets the given properties for all datasets specified on the command line.
3451 */
3452
3453 static int
3454 set_callback(zfs_handle_t *zhp, void *data)
3455 {
3456 nvlist_t *props = data;
3457
3458 if (zfs_prop_set_list(zhp, props) != 0) {
3459 switch (libzfs_errno(g_zfs)) {
3460 case EZFS_MOUNTFAILED:
3461 (void) fprintf(stderr, gettext("property may be set "
3462 "but unable to remount filesystem\n"));
3463 break;
3464 case EZFS_SHARENFSFAILED:
3465 (void) fprintf(stderr, gettext("property may be set "
3466 "but unable to reshare filesystem\n"));
3467 break;
3468 }
3469 return (1);
3470 }
3471 return (0);
3472 }
3473
3474 static int
3475 zfs_do_set(int argc, char **argv)
3476 {
3477 nvlist_t *props = NULL;
3478 int ds_start = -1; /* argv idx of first dataset arg */
3479 int ret = 0;
3480
3481 /* check for options */
3482 if (argc > 1 && argv[1][0] == '-') {
3483 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3484 argv[1][1]);
3485 usage(B_FALSE);
3486 }
3487
3488 /* check number of arguments */
3489 if (argc < 2) {
3490 (void) fprintf(stderr, gettext("missing arguments\n"));
3491 usage(B_FALSE);
3492 }
3493 if (argc < 3) {
3494 if (strchr(argv[1], '=') == NULL) {
3495 (void) fprintf(stderr, gettext("missing property=value "
3496 "argument(s)\n"));
3497 } else {
3498 (void) fprintf(stderr, gettext("missing dataset "
3499 "name(s)\n"));
3500 }
3501 usage(B_FALSE);
3502 }
3503
3504 /* validate argument order: prop=val args followed by dataset args */
3505 for (int i = 1; i < argc; i++) {
3506 if (strchr(argv[i], '=') != NULL) {
3507 if (ds_start > 0) {
3508 /* out-of-order prop=val argument */
3509 (void) fprintf(stderr, gettext("invalid "
3510 "argument order\n"), i);
3511 usage(B_FALSE);
3512 }
3513 } else if (ds_start < 0) {
3514 ds_start = i;
3515 }
3516 }
3517 if (ds_start < 0) {
3518 (void) fprintf(stderr, gettext("missing dataset name(s)\n"));
3519 usage(B_FALSE);
3520 }
3521
3522 /* Populate a list of property settings */
3523 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3524 nomem();
3525 for (int i = 1; i < ds_start; i++) {
3526 if ((ret = parseprop(props, argv[i])) != 0)
3527 goto error;
3528 }
3529
3530 ret = zfs_for_each(argc - ds_start, argv + ds_start, 0,
3531 ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, props);
3532
3533 error:
3534 nvlist_free(props);
3535 return (ret);
3536 }
3537
3538 typedef struct snap_cbdata {
3539 nvlist_t *sd_nvl;
3540 boolean_t sd_recursive;
3541 const char *sd_snapname;
3542 } snap_cbdata_t;
3543
3544 static int
3545 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3546 {
3547 snap_cbdata_t *sd = arg;
3548 char *name;
3549 int rv = 0;
3550 int error;
3551
3552 if (sd->sd_recursive &&
3553 zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3554 zfs_close(zhp);
3555 return (0);
3556 }
3557
3558 error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3559 if (error == -1)
3560 nomem();
3561 fnvlist_add_boolean(sd->sd_nvl, name);
3562 free(name);
3563
3564 if (sd->sd_recursive)
3565 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3566 zfs_close(zhp);
3567 return (rv);
3568 }
3569
3570 /*
3571 * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3572 *
3573 * Creates a snapshot with the given name. While functionally equivalent to
3574 * 'zfs create', it is a separate command to differentiate intent.
3575 */
3576 static int
3577 zfs_do_snapshot(int argc, char **argv)
3578 {
3579 int ret = 0;
3580 char c;
3581 nvlist_t *props;
3582 snap_cbdata_t sd = { 0 };
3583 boolean_t multiple_snaps = B_FALSE;
3584
3585 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3586 nomem();
3587 if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3588 nomem();
3589
3590 /* check options */
3591 while ((c = getopt(argc, argv, "ro:")) != -1) {
3592 switch (c) {
3593 case 'o':
3594 if (parseprop(props, optarg) != 0)
3595 return (1);
3596 break;
3597 case 'r':
3598 sd.sd_recursive = B_TRUE;
3599 multiple_snaps = B_TRUE;
3600 break;
3601 case '?':
3602 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3603 optopt);
3604 goto usage;
3605 }
3606 }
3607
3608 argc -= optind;
3609 argv += optind;
3610
3611 /* check number of arguments */
3612 if (argc < 1) {
3613 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3614 goto usage;
3615 }
3616
3617 if (argc > 1)
3618 multiple_snaps = B_TRUE;
3619 for (; argc > 0; argc--, argv++) {
3620 char *atp;
3621 zfs_handle_t *zhp;
3622
3623 atp = strchr(argv[0], '@');
3624 if (atp == NULL)
3625 goto usage;
3626 *atp = '\0';
3627 sd.sd_snapname = atp + 1;
3628 zhp = zfs_open(g_zfs, argv[0],
3629 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3630 if (zhp == NULL)
3631 goto usage;
3632 if (zfs_snapshot_cb(zhp, &sd) != 0)
3633 goto usage;
3634 }
3635
3636 ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3637 nvlist_free(sd.sd_nvl);
3638 nvlist_free(props);
3639 if (ret != 0 && multiple_snaps)
3640 (void) fprintf(stderr, gettext("no snapshots were created\n"));
3641 return (ret != 0);
3642
3643 usage:
3644 nvlist_free(sd.sd_nvl);
3645 nvlist_free(props);
3646 usage(B_FALSE);
3647 return (-1);
3648 }
3649
3650 /*
3651 * Send a backup stream to stdout.
3652 */
3653 static int
3654 zfs_do_send(int argc, char **argv)
3655 {
3656 char *fromname = NULL;
3657 char *toname = NULL;
3658 char *cp;
3659 zfs_handle_t *zhp;
3660 sendflags_t flags = { 0 };
3661 int c, err;
3662 nvlist_t *dbgnv = NULL;
3663 boolean_t extraverbose = B_FALSE;
3664
3665 /* check options */
3666 while ((c = getopt(argc, argv, ":i:I:RDpvnPLe")) != -1) {
3667 switch (c) {
3668 case 'i':
3669 if (fromname)
3670 usage(B_FALSE);
3671 fromname = optarg;
3672 break;
3673 case 'I':
3674 if (fromname)
3675 usage(B_FALSE);
3676 fromname = optarg;
3677 flags.doall = B_TRUE;
3678 break;
3679 case 'R':
3680 flags.replicate = B_TRUE;
3681 break;
3682 case 'p':
3683 flags.props = B_TRUE;
3684 break;
3685 case 'P':
3686 flags.parsable = B_TRUE;
3687 flags.verbose = B_TRUE;
3688 break;
3689 case 'v':
3690 if (flags.verbose)
3691 extraverbose = B_TRUE;
3692 flags.verbose = B_TRUE;
3693 flags.progress = B_TRUE;
3694 break;
3695 case 'D':
3696 flags.dedup = B_TRUE;
3697 break;
3698 case 'n':
3699 flags.dryrun = B_TRUE;
3700 break;
3701 case 'L':
3702 flags.largeblock = B_TRUE;
3703 break;
3704 case 'e':
3705 flags.embed_data = B_TRUE;
3706 break;
3707 case ':':
3708 (void) fprintf(stderr, gettext("missing argument for "
3709 "'%c' option\n"), optopt);
3710 usage(B_FALSE);
3711 break;
3712 case '?':
3713 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3714 optopt);
3715 usage(B_FALSE);
3716 }
3717 }
3718
3719 argc -= optind;
3720 argv += optind;
3721
3722 /* check number of arguments */
3723 if (argc < 1) {
3724 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3725 usage(B_FALSE);
3726 }
3727 if (argc > 1) {
3728 (void) fprintf(stderr, gettext("too many arguments\n"));
3729 usage(B_FALSE);
3730 }
3731
3732 if (!flags.dryrun && isatty(STDOUT_FILENO)) {
3733 (void) fprintf(stderr,
3734 gettext("Error: Stream can not be written to a terminal.\n"
3735 "You must redirect standard output.\n"));
3736 return (1);
3737 }
3738
3739 /*
3740 * Special case sending a filesystem, or from a bookmark.
3741 */
3742 if (strchr(argv[0], '@') == NULL ||
3743 (fromname && strchr(fromname, '#') != NULL)) {
3744 char frombuf[ZFS_MAXNAMELEN];
3745 enum lzc_send_flags lzc_flags = 0;
3746
3747 if (flags.replicate || flags.doall || flags.props ||
3748 flags.dedup || flags.dryrun || flags.verbose ||
3749 flags.progress) {
3750 (void) fprintf(stderr,
3751 gettext("Error: "
3752 "Unsupported flag with filesystem or bookmark.\n"));
3753 return (1);
3754 }
3755
3756 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
3757 if (zhp == NULL)
3758 return (1);
3759
3760 if (flags.largeblock)
3761 lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
3762 if (flags.embed_data)
3763 lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
3764
3765 if (fromname != NULL &&
3766 (fromname[0] == '#' || fromname[0] == '@')) {
3767 /*
3768 * Incremental source name begins with # or @.
3769 * Default to same fs as target.
3770 */
3771 (void) strncpy(frombuf, argv[0], sizeof (frombuf));
3772 cp = strchr(frombuf, '@');
3773 if (cp != NULL)
3774 *cp = '\0';
3775 (void) strlcat(frombuf, fromname, sizeof (frombuf));
3776 fromname = frombuf;
3777 }
3778 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, lzc_flags);
3779 zfs_close(zhp);
3780 return (err != 0);
3781 }
3782
3783 cp = strchr(argv[0], '@');
3784 *cp = '\0';
3785 toname = cp + 1;
3786 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3787 if (zhp == NULL)
3788 return (1);
3789
3790 /*
3791 * If they specified the full path to the snapshot, chop off
3792 * everything except the short name of the snapshot, but special
3793 * case if they specify the origin.
3794 */
3795 if (fromname && (cp = strchr(fromname, '@')) != NULL) {
3796 char origin[ZFS_MAXNAMELEN];
3797 zprop_source_t src;
3798
3799 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
3800 origin, sizeof (origin), &src, NULL, 0, B_FALSE);
3801
3802 if (strcmp(origin, fromname) == 0) {
3803 fromname = NULL;
3804 flags.fromorigin = B_TRUE;
3805 } else {
3806 *cp = '\0';
3807 if (cp != fromname && strcmp(argv[0], fromname)) {
3808 (void) fprintf(stderr,
3809 gettext("incremental source must be "
3810 "in same filesystem\n"));
3811 usage(B_FALSE);
3812 }
3813 fromname = cp + 1;
3814 if (strchr(fromname, '@') || strchr(fromname, '/')) {
3815 (void) fprintf(stderr,
3816 gettext("invalid incremental source\n"));
3817 usage(B_FALSE);
3818 }
3819 }
3820 }
3821
3822 if (flags.replicate && fromname == NULL)
3823 flags.doall = B_TRUE;
3824
3825 err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
3826 extraverbose ? &dbgnv : NULL);
3827
3828 if (extraverbose && dbgnv != NULL) {
3829 /*
3830 * dump_nvlist prints to stdout, but that's been
3831 * redirected to a file. Make it print to stderr
3832 * instead.
3833 */
3834 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
3835 dump_nvlist(dbgnv, 0);
3836 nvlist_free(dbgnv);
3837 }
3838 zfs_close(zhp);
3839
3840 return (err != 0);
3841 }
3842
3843 /*
3844 * zfs receive [-vnFu] [-d | -e] <fs@snap>
3845 *
3846 * Restore a backup stream from stdin.
3847 */
3848 static int
3849 zfs_do_receive(int argc, char **argv)
3850 {
3851 int c, err;
3852 recvflags_t flags = { 0 };
3853 nvlist_t *props;
3854 nvpair_t *nvp = NULL;
3855
3856 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3857 nomem();
3858
3859 /* check options */
3860 while ((c = getopt(argc, argv, ":o:denuvF")) != -1) {
3861 switch (c) {
3862 case 'o':
3863 if (parseprop(props, optarg) != 0)
3864 return (1);
3865 break;
3866 case 'd':
3867 flags.isprefix = B_TRUE;
3868 break;
3869 case 'e':
3870 flags.isprefix = B_TRUE;
3871 flags.istail = B_TRUE;
3872 break;
3873 case 'n':
3874 flags.dryrun = B_TRUE;
3875 break;
3876 case 'u':
3877 flags.nomount = B_TRUE;
3878 break;
3879 case 'v':
3880 flags.verbose = B_TRUE;
3881 break;
3882 case 'F':
3883 flags.force = B_TRUE;
3884 break;
3885 case ':':
3886 (void) fprintf(stderr, gettext("missing argument for "
3887 "'%c' option\n"), optopt);
3888 usage(B_FALSE);
3889 break;
3890 case '?':
3891 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3892 optopt);
3893 usage(B_FALSE);
3894 }
3895 }
3896
3897 argc -= optind;
3898 argv += optind;
3899
3900 /* check number of arguments */
3901 if (argc < 1) {
3902 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3903 usage(B_FALSE);
3904 }
3905 if (argc > 1) {
3906 (void) fprintf(stderr, gettext("too many arguments\n"));
3907 usage(B_FALSE);
3908 }
3909
3910 while ((nvp = nvlist_next_nvpair(props, nvp))) {
3911 if (strcmp(nvpair_name(nvp), "origin") != 0) {
3912 (void) fprintf(stderr, gettext("invalid option"));
3913 usage(B_FALSE);
3914 }
3915 }
3916
3917 if (isatty(STDIN_FILENO)) {
3918 (void) fprintf(stderr,
3919 gettext("Error: Backup stream can not be read "
3920 "from a terminal.\n"
3921 "You must redirect standard input.\n"));
3922 return (1);
3923 }
3924
3925 err = zfs_receive(g_zfs, argv[0], props, &flags, STDIN_FILENO, NULL);
3926
3927 return (err != 0);
3928 }
3929
3930 /*
3931 * allow/unallow stuff
3932 */
3933 /* copied from zfs/sys/dsl_deleg.h */
3934 #define ZFS_DELEG_PERM_CREATE "create"
3935 #define ZFS_DELEG_PERM_DESTROY "destroy"
3936 #define ZFS_DELEG_PERM_SNAPSHOT "snapshot"
3937 #define ZFS_DELEG_PERM_ROLLBACK "rollback"
3938 #define ZFS_DELEG_PERM_CLONE "clone"
3939 #define ZFS_DELEG_PERM_PROMOTE "promote"
3940 #define ZFS_DELEG_PERM_RENAME "rename"
3941 #define ZFS_DELEG_PERM_MOUNT "mount"
3942 #define ZFS_DELEG_PERM_SHARE "share"
3943 #define ZFS_DELEG_PERM_SEND "send"
3944 #define ZFS_DELEG_PERM_RECEIVE "receive"
3945 #define ZFS_DELEG_PERM_ALLOW "allow"
3946 #define ZFS_DELEG_PERM_USERPROP "userprop"
3947 #define ZFS_DELEG_PERM_VSCAN "vscan" /* ??? */
3948 #define ZFS_DELEG_PERM_USERQUOTA "userquota"
3949 #define ZFS_DELEG_PERM_GROUPQUOTA "groupquota"
3950 #define ZFS_DELEG_PERM_USERUSED "userused"
3951 #define ZFS_DELEG_PERM_GROUPUSED "groupused"
3952 #define ZFS_DELEG_PERM_HOLD "hold"
3953 #define ZFS_DELEG_PERM_RELEASE "release"
3954 #define ZFS_DELEG_PERM_DIFF "diff"
3955 #define ZFS_DELEG_PERM_BOOKMARK "bookmark"
3956
3957 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
3958
3959 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
3960 { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
3961 { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
3962 { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
3963 { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
3964 { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
3965 { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
3966 { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
3967 { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
3968 { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
3969 { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
3970 { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
3971 { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
3972 { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
3973 { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
3974 { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
3975 { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
3976
3977 { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
3978 { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
3979 { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
3980 { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
3981 { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
3982 { NULL, ZFS_DELEG_NOTE_NONE }
3983 };
3984
3985 /* permission structure */
3986 typedef struct deleg_perm {
3987 zfs_deleg_who_type_t dp_who_type;
3988 const char *dp_name;
3989 boolean_t dp_local;
3990 boolean_t dp_descend;
3991 } deleg_perm_t;
3992
3993 /* */
3994 typedef struct deleg_perm_node {
3995 deleg_perm_t dpn_perm;
3996
3997 uu_avl_node_t dpn_avl_node;
3998 } deleg_perm_node_t;
3999
4000 typedef struct fs_perm fs_perm_t;
4001
4002 /* permissions set */
4003 typedef struct who_perm {
4004 zfs_deleg_who_type_t who_type;
4005 const char *who_name; /* id */
4006 char who_ug_name[256]; /* user/group name */
4007 fs_perm_t *who_fsperm; /* uplink */
4008
4009 uu_avl_t *who_deleg_perm_avl; /* permissions */
4010 } who_perm_t;
4011
4012 /* */
4013 typedef struct who_perm_node {
4014 who_perm_t who_perm;
4015 uu_avl_node_t who_avl_node;
4016 } who_perm_node_t;
4017
4018 typedef struct fs_perm_set fs_perm_set_t;
4019 /* fs permissions */
4020 struct fs_perm {
4021 const char *fsp_name;
4022
4023 uu_avl_t *fsp_sc_avl; /* sets,create */
4024 uu_avl_t *fsp_uge_avl; /* user,group,everyone */
4025
4026 fs_perm_set_t *fsp_set; /* uplink */
4027 };
4028
4029 /* */
4030 typedef struct fs_perm_node {
4031 fs_perm_t fspn_fsperm;
4032 uu_avl_t *fspn_avl;
4033
4034 uu_list_node_t fspn_list_node;
4035 } fs_perm_node_t;
4036
4037 /* top level structure */
4038 struct fs_perm_set {
4039 uu_list_pool_t *fsps_list_pool;
4040 uu_list_t *fsps_list; /* list of fs_perms */
4041
4042 uu_avl_pool_t *fsps_named_set_avl_pool;
4043 uu_avl_pool_t *fsps_who_perm_avl_pool;
4044 uu_avl_pool_t *fsps_deleg_perm_avl_pool;
4045 };
4046
4047 static inline const char *
4048 deleg_perm_type(zfs_deleg_note_t note)
4049 {
4050 /* subcommands */
4051 switch (note) {
4052 /* SUBCOMMANDS */
4053 /* OTHER */
4054 case ZFS_DELEG_NOTE_GROUPQUOTA:
4055 case ZFS_DELEG_NOTE_GROUPUSED:
4056 case ZFS_DELEG_NOTE_USERPROP:
4057 case ZFS_DELEG_NOTE_USERQUOTA:
4058 case ZFS_DELEG_NOTE_USERUSED:
4059 /* other */
4060 return (gettext("other"));
4061 default:
4062 return (gettext("subcommand"));
4063 }
4064 }
4065
4066 static int inline
4067 who_type2weight(zfs_deleg_who_type_t who_type)
4068 {
4069 int res;
4070 switch (who_type) {
4071 case ZFS_DELEG_NAMED_SET_SETS:
4072 case ZFS_DELEG_NAMED_SET:
4073 res = 0;
4074 break;
4075 case ZFS_DELEG_CREATE_SETS:
4076 case ZFS_DELEG_CREATE:
4077 res = 1;
4078 break;
4079 case ZFS_DELEG_USER_SETS:
4080 case ZFS_DELEG_USER:
4081 res = 2;
4082 break;
4083 case ZFS_DELEG_GROUP_SETS:
4084 case ZFS_DELEG_GROUP:
4085 res = 3;
4086 break;
4087 case ZFS_DELEG_EVERYONE_SETS:
4088 case ZFS_DELEG_EVERYONE:
4089 res = 4;
4090 break;
4091 default:
4092 res = -1;
4093 }
4094
4095 return (res);
4096 }
4097
4098 /* ARGSUSED */
4099 static int
4100 who_perm_compare(const void *larg, const void *rarg, void *unused)
4101 {
4102 const who_perm_node_t *l = larg;
4103 const who_perm_node_t *r = rarg;
4104 zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4105 zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4106 int lweight = who_type2weight(ltype);
4107 int rweight = who_type2weight(rtype);
4108 int res = lweight - rweight;
4109 if (res == 0)
4110 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4111 ZFS_MAX_DELEG_NAME-1);
4112
4113 if (res == 0)
4114 return (0);
4115 if (res > 0)
4116 return (1);
4117 else
4118 return (-1);
4119 }
4120
4121 /* ARGSUSED */
4122 static int
4123 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4124 {
4125 const deleg_perm_node_t *l = larg;
4126 const deleg_perm_node_t *r = rarg;
4127 int res = strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4128 ZFS_MAX_DELEG_NAME-1);
4129
4130 if (res == 0)
4131 return (0);
4132
4133 if (res > 0)
4134 return (1);
4135 else
4136 return (-1);
4137 }
4138
4139 static inline void
4140 fs_perm_set_init(fs_perm_set_t *fspset)
4141 {
4142 bzero(fspset, sizeof (fs_perm_set_t));
4143
4144 if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4145 sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4146 NULL, UU_DEFAULT)) == NULL)
4147 nomem();
4148 if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4149 UU_DEFAULT)) == NULL)
4150 nomem();
4151
4152 if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4153 "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4154 who_perm_node_t, who_avl_node), who_perm_compare,
4155 UU_DEFAULT)) == NULL)
4156 nomem();
4157
4158 if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4159 "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4160 who_perm_node_t, who_avl_node), who_perm_compare,
4161 UU_DEFAULT)) == NULL)
4162 nomem();
4163
4164 if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4165 "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4166 deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4167 == NULL)
4168 nomem();
4169 }
4170
4171 static inline void fs_perm_fini(fs_perm_t *);
4172 static inline void who_perm_fini(who_perm_t *);
4173
4174 static inline void
4175 fs_perm_set_fini(fs_perm_set_t *fspset)
4176 {
4177 fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4178
4179 while (node != NULL) {
4180 fs_perm_node_t *next_node =
4181 uu_list_next(fspset->fsps_list, node);
4182 fs_perm_t *fsperm = &node->fspn_fsperm;
4183 fs_perm_fini(fsperm);
4184 uu_list_remove(fspset->fsps_list, node);
4185 free(node);
4186 node = next_node;
4187 }
4188
4189 uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4190 uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4191 uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4192 }
4193
4194 static inline void
4195 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4196 const char *name)
4197 {
4198 deleg_perm->dp_who_type = type;
4199 deleg_perm->dp_name = name;
4200 }
4201
4202 static inline void
4203 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4204 zfs_deleg_who_type_t type, const char *name)
4205 {
4206 uu_avl_pool_t *pool;
4207 pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4208
4209 bzero(who_perm, sizeof (who_perm_t));
4210
4211 if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4212 UU_DEFAULT)) == NULL)
4213 nomem();
4214
4215 who_perm->who_type = type;
4216 who_perm->who_name = name;
4217 who_perm->who_fsperm = fsperm;
4218 }
4219
4220 static inline void
4221 who_perm_fini(who_perm_t *who_perm)
4222 {
4223 deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4224
4225 while (node != NULL) {
4226 deleg_perm_node_t *next_node =
4227 uu_avl_next(who_perm->who_deleg_perm_avl, node);
4228
4229 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4230 free(node);
4231 node = next_node;
4232 }
4233
4234 uu_avl_destroy(who_perm->who_deleg_perm_avl);
4235 }
4236
4237 static inline void
4238 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4239 {
4240 uu_avl_pool_t *nset_pool = fspset->fsps_named_set_avl_pool;
4241 uu_avl_pool_t *who_pool = fspset->fsps_who_perm_avl_pool;
4242
4243 bzero(fsperm, sizeof (fs_perm_t));
4244
4245 if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4246 == NULL)
4247 nomem();
4248
4249 if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4250 == NULL)
4251 nomem();
4252
4253 fsperm->fsp_set = fspset;
4254 fsperm->fsp_name = fsname;
4255 }
4256
4257 static inline void
4258 fs_perm_fini(fs_perm_t *fsperm)
4259 {
4260 who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4261 while (node != NULL) {
4262 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4263 node);
4264 who_perm_t *who_perm = &node->who_perm;
4265 who_perm_fini(who_perm);
4266 uu_avl_remove(fsperm->fsp_sc_avl, node);
4267 free(node);
4268 node = next_node;
4269 }
4270
4271 node = uu_avl_first(fsperm->fsp_uge_avl);
4272 while (node != NULL) {
4273 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4274 node);
4275 who_perm_t *who_perm = &node->who_perm;
4276 who_perm_fini(who_perm);
4277 uu_avl_remove(fsperm->fsp_uge_avl, node);
4278 free(node);
4279 node = next_node;
4280 }
4281
4282 uu_avl_destroy(fsperm->fsp_sc_avl);
4283 uu_avl_destroy(fsperm->fsp_uge_avl);
4284 }
4285
4286 static void inline
4287 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4288 zfs_deleg_who_type_t who_type, const char *name, char locality)
4289 {
4290 uu_avl_index_t idx = 0;
4291
4292 deleg_perm_node_t *found_node = NULL;
4293 deleg_perm_t *deleg_perm = &node->dpn_perm;
4294
4295 deleg_perm_init(deleg_perm, who_type, name);
4296
4297 if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4298 == NULL)
4299 uu_avl_insert(avl, node, idx);
4300 else {
4301 node = found_node;
4302 deleg_perm = &node->dpn_perm;
4303 }
4304
4305
4306 switch (locality) {
4307 case ZFS_DELEG_LOCAL:
4308 deleg_perm->dp_local = B_TRUE;
4309 break;
4310 case ZFS_DELEG_DESCENDENT:
4311 deleg_perm->dp_descend = B_TRUE;
4312 break;
4313 case ZFS_DELEG_NA:
4314 break;
4315 default:
4316 assert(B_FALSE); /* invalid locality */
4317 }
4318 }
4319
4320 static inline int
4321 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4322 {
4323 nvpair_t *nvp = NULL;
4324 fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4325 uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4326 zfs_deleg_who_type_t who_type = who_perm->who_type;
4327
4328 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4329 const char *name = nvpair_name(nvp);
4330 data_type_t type = nvpair_type(nvp);
4331 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4332 deleg_perm_node_t *node =
4333 safe_malloc(sizeof (deleg_perm_node_t));
4334
4335 assert(type == DATA_TYPE_BOOLEAN);
4336
4337 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4338 set_deleg_perm_node(avl, node, who_type, name, locality);
4339 }
4340
4341 return (0);
4342 }
4343
4344 static inline int
4345 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4346 {
4347 nvpair_t *nvp = NULL;
4348 fs_perm_set_t *fspset = fsperm->fsp_set;
4349
4350 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4351 nvlist_t *nvl2 = NULL;
4352 const char *name = nvpair_name(nvp);
4353 uu_avl_t *avl = NULL;
4354 uu_avl_pool_t *avl_pool;
4355 zfs_deleg_who_type_t perm_type = name[0];
4356 char perm_locality = name[1];
4357 const char *perm_name = name + 3;
4358 boolean_t is_set = B_TRUE;
4359 who_perm_t *who_perm = NULL;
4360
4361 assert('$' == name[2]);
4362
4363 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4364 return (-1);
4365
4366 switch (perm_type) {
4367 case ZFS_DELEG_CREATE:
4368 case ZFS_DELEG_CREATE_SETS:
4369 case ZFS_DELEG_NAMED_SET:
4370 case ZFS_DELEG_NAMED_SET_SETS:
4371 avl_pool = fspset->fsps_named_set_avl_pool;
4372 avl = fsperm->fsp_sc_avl;
4373 break;
4374 case ZFS_DELEG_USER:
4375 case ZFS_DELEG_USER_SETS:
4376 case ZFS_DELEG_GROUP:
4377 case ZFS_DELEG_GROUP_SETS:
4378 case ZFS_DELEG_EVERYONE:
4379 case ZFS_DELEG_EVERYONE_SETS:
4380 avl_pool = fspset->fsps_who_perm_avl_pool;
4381 avl = fsperm->fsp_uge_avl;
4382 break;
4383 }
4384
4385 if (is_set) {
4386 who_perm_node_t *found_node = NULL;
4387 who_perm_node_t *node = safe_malloc(
4388 sizeof (who_perm_node_t));
4389 who_perm = &node->who_perm;
4390 uu_avl_index_t idx = 0;
4391
4392 uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4393 who_perm_init(who_perm, fsperm, perm_type, perm_name);
4394
4395 if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4396 == NULL) {
4397 if (avl == fsperm->fsp_uge_avl) {
4398 uid_t rid = 0;
4399 struct passwd *p = NULL;
4400 struct group *g = NULL;
4401 const char *nice_name = NULL;
4402
4403 switch (perm_type) {
4404 case ZFS_DELEG_USER_SETS:
4405 case ZFS_DELEG_USER:
4406 rid = atoi(perm_name);
4407 p = getpwuid(rid);
4408 if (p)
4409 nice_name = p->pw_name;
4410 break;
4411 case ZFS_DELEG_GROUP_SETS:
4412 case ZFS_DELEG_GROUP:
4413 rid = atoi(perm_name);
4414 g = getgrgid(rid);
4415 if (g)
4416 nice_name = g->gr_name;
4417 break;
4418 }
4419
4420 if (nice_name != NULL)
4421 (void) strlcpy(
4422 node->who_perm.who_ug_name,
4423 nice_name, 256);
4424 }
4425
4426 uu_avl_insert(avl, node, idx);
4427 } else {
4428 node = found_node;
4429 who_perm = &node->who_perm;
4430 }
4431 }
4432
4433 (void) parse_who_perm(who_perm, nvl2, perm_locality);
4434 }
4435
4436 return (0);
4437 }
4438
4439 static inline int
4440 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4441 {
4442 nvpair_t *nvp = NULL;
4443 uu_avl_index_t idx = 0;
4444
4445 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4446 nvlist_t *nvl2 = NULL;
4447 const char *fsname = nvpair_name(nvp);
4448 data_type_t type = nvpair_type(nvp);
4449 fs_perm_t *fsperm = NULL;
4450 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4451 if (node == NULL)
4452 nomem();
4453
4454 fsperm = &node->fspn_fsperm;
4455
4456 assert(DATA_TYPE_NVLIST == type);
4457
4458 uu_list_node_init(node, &node->fspn_list_node,
4459 fspset->fsps_list_pool);
4460
4461 idx = uu_list_numnodes(fspset->fsps_list);
4462 fs_perm_init(fsperm, fspset, fsname);
4463
4464 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4465 return (-1);
4466
4467 (void) parse_fs_perm(fsperm, nvl2);
4468
4469 uu_list_insert(fspset->fsps_list, node, idx);
4470 }
4471
4472 return (0);
4473 }
4474
4475 static inline const char *
4476 deleg_perm_comment(zfs_deleg_note_t note)
4477 {
4478 const char *str = "";
4479
4480 /* subcommands */
4481 switch (note) {
4482 /* SUBCOMMANDS */
4483 case ZFS_DELEG_NOTE_ALLOW:
4484 str = gettext("Must also have the permission that is being"
4485 "\n\t\t\t\tallowed");
4486 break;
4487 case ZFS_DELEG_NOTE_CLONE:
4488 str = gettext("Must also have the 'create' ability and 'mount'"
4489 "\n\t\t\t\tability in the origin file system");
4490 break;
4491 case ZFS_DELEG_NOTE_CREATE:
4492 str = gettext("Must also have the 'mount' ability");
4493 break;
4494 case ZFS_DELEG_NOTE_DESTROY:
4495 str = gettext("Must also have the 'mount' ability");
4496 break;
4497 case ZFS_DELEG_NOTE_DIFF:
4498 str = gettext("Allows lookup of paths within a dataset;"
4499 "\n\t\t\t\tgiven an object number. Ordinary users need this"
4500 "\n\t\t\t\tin order to use zfs diff");
4501 break;
4502 case ZFS_DELEG_NOTE_HOLD:
4503 str = gettext("Allows adding a user hold to a snapshot");
4504 break;
4505 case ZFS_DELEG_NOTE_MOUNT:
4506 str = gettext("Allows mount/umount of ZFS datasets");
4507 break;
4508 case ZFS_DELEG_NOTE_PROMOTE:
4509 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
4510 " 'promote' ability in the origin file system");
4511 break;
4512 case ZFS_DELEG_NOTE_RECEIVE:
4513 str = gettext("Must also have the 'mount' and 'create'"
4514 " ability");
4515 break;
4516 case ZFS_DELEG_NOTE_RELEASE:
4517 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
4518 "might destroy the snapshot");
4519 break;
4520 case ZFS_DELEG_NOTE_RENAME:
4521 str = gettext("Must also have the 'mount' and 'create'"
4522 "\n\t\t\t\tability in the new parent");
4523 break;
4524 case ZFS_DELEG_NOTE_ROLLBACK:
4525 str = gettext("");
4526 break;
4527 case ZFS_DELEG_NOTE_SEND:
4528 str = gettext("");
4529 break;
4530 case ZFS_DELEG_NOTE_SHARE:
4531 str = gettext("Allows sharing file systems over NFS or SMB"
4532 "\n\t\t\t\tprotocols");
4533 break;
4534 case ZFS_DELEG_NOTE_SNAPSHOT:
4535 str = gettext("");
4536 break;
4537 /*
4538 * case ZFS_DELEG_NOTE_VSCAN:
4539 * str = gettext("");
4540 * break;
4541 */
4542 /* OTHER */
4543 case ZFS_DELEG_NOTE_GROUPQUOTA:
4544 str = gettext("Allows accessing any groupquota@... property");
4545 break;
4546 case ZFS_DELEG_NOTE_GROUPUSED:
4547 str = gettext("Allows reading any groupused@... property");
4548 break;
4549 case ZFS_DELEG_NOTE_USERPROP:
4550 str = gettext("Allows changing any user property");
4551 break;
4552 case ZFS_DELEG_NOTE_USERQUOTA:
4553 str = gettext("Allows accessing any userquota@... property");
4554 break;
4555 case ZFS_DELEG_NOTE_USERUSED:
4556 str = gettext("Allows reading any userused@... property");
4557 break;
4558 /* other */
4559 default:
4560 str = "";
4561 }
4562
4563 return (str);
4564 }
4565
4566 struct allow_opts {
4567 boolean_t local;
4568 boolean_t descend;
4569 boolean_t user;
4570 boolean_t group;
4571 boolean_t everyone;
4572 boolean_t create;
4573 boolean_t set;
4574 boolean_t recursive; /* unallow only */
4575 boolean_t prt_usage;
4576
4577 boolean_t prt_perms;
4578 char *who;
4579 char *perms;
4580 const char *dataset;
4581 };
4582
4583 static inline int
4584 prop_cmp(const void *a, const void *b)
4585 {
4586 const char *str1 = *(const char **)a;
4587 const char *str2 = *(const char **)b;
4588 return (strcmp(str1, str2));
4589 }
4590
4591 static void
4592 allow_usage(boolean_t un, boolean_t requested, const char *msg)
4593 {
4594 const char *opt_desc[] = {
4595 "-h", gettext("show this help message and exit"),
4596 "-l", gettext("set permission locally"),
4597 "-d", gettext("set permission for descents"),
4598 "-u", gettext("set permission for user"),
4599 "-g", gettext("set permission for group"),
4600 "-e", gettext("set permission for everyone"),
4601 "-c", gettext("set create time permission"),
4602 "-s", gettext("define permission set"),
4603 /* unallow only */
4604 "-r", gettext("remove permissions recursively"),
4605 };
4606 size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
4607 size_t allow_size = unallow_size - 2;
4608 const char *props[ZFS_NUM_PROPS];
4609 int i;
4610 size_t count = 0;
4611 FILE *fp = requested ? stdout : stderr;
4612 zprop_desc_t *pdtbl = zfs_prop_get_table();
4613 const char *fmt = gettext("%-16s %-14s\t%s\n");
4614
4615 (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
4616 HELP_ALLOW));
4617 (void) fprintf(fp, gettext("Options:\n"));
4618 for (int i = 0; i < (un ? unallow_size : allow_size); i++) {
4619 const char *opt = opt_desc[i++];
4620 const char *optdsc = opt_desc[i];
4621 (void) fprintf(fp, gettext(" %-10s %s\n"), opt, optdsc);
4622 }
4623
4624 (void) fprintf(fp, gettext("\nThe following permissions are "
4625 "supported:\n\n"));
4626 (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
4627 gettext("NOTES"));
4628 for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
4629 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
4630 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
4631 const char *perm_type = deleg_perm_type(perm_note);
4632 const char *perm_comment = deleg_perm_comment(perm_note);
4633 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
4634 }
4635
4636 for (i = 0; i < ZFS_NUM_PROPS; i++) {
4637 zprop_desc_t *pd = &pdtbl[i];
4638 if (pd->pd_visible != B_TRUE)
4639 continue;
4640
4641 if (pd->pd_attr == PROP_READONLY)
4642 continue;
4643
4644 props[count++] = pd->pd_name;
4645 }
4646 props[count] = NULL;
4647
4648 qsort(props, count, sizeof (char *), prop_cmp);
4649
4650 for (i = 0; i < count; i++)
4651 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
4652
4653 if (msg != NULL)
4654 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
4655
4656 exit(requested ? 0 : 2);
4657 }
4658
4659 static inline const char *
4660 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
4661 char **permsp)
4662 {
4663 if (un && argc == expected_argc - 1)
4664 *permsp = NULL;
4665 else if (argc == expected_argc)
4666 *permsp = argv[argc - 2];
4667 else
4668 allow_usage(un, B_FALSE,
4669 gettext("wrong number of parameters\n"));
4670
4671 return (argv[argc - 1]);
4672 }
4673
4674 static void
4675 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
4676 {
4677 int uge_sum = opts->user + opts->group + opts->everyone;
4678 int csuge_sum = opts->create + opts->set + uge_sum;
4679 int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
4680 int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
4681
4682 if (uge_sum > 1)
4683 allow_usage(un, B_FALSE,
4684 gettext("-u, -g, and -e are mutually exclusive\n"));
4685
4686 if (opts->prt_usage)
4687 if (argc == 0 && all_sum == 0)
4688 allow_usage(un, B_TRUE, NULL);
4689 else
4690 usage(B_FALSE);
4691
4692 if (opts->set) {
4693 if (csuge_sum > 1)
4694 allow_usage(un, B_FALSE,
4695 gettext("invalid options combined with -s\n"));
4696
4697 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4698 if (argv[0][0] != '@')
4699 allow_usage(un, B_FALSE,
4700 gettext("invalid set name: missing '@' prefix\n"));
4701 opts->who = argv[0];
4702 } else if (opts->create) {
4703 if (ldcsuge_sum > 1)
4704 allow_usage(un, B_FALSE,
4705 gettext("invalid options combined with -c\n"));
4706 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4707 } else if (opts->everyone) {
4708 if (csuge_sum > 1)
4709 allow_usage(un, B_FALSE,
4710 gettext("invalid options combined with -e\n"));
4711 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4712 } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
4713 == 0) {
4714 opts->everyone = B_TRUE;
4715 argc--;
4716 argv++;
4717 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4718 } else if (argc == 1 && !un) {
4719 opts->prt_perms = B_TRUE;
4720 opts->dataset = argv[argc-1];
4721 } else {
4722 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4723 opts->who = argv[0];
4724 }
4725
4726 if (!opts->local && !opts->descend) {
4727 opts->local = B_TRUE;
4728 opts->descend = B_TRUE;
4729 }
4730 }
4731
4732 static void
4733 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
4734 const char *who, char *perms, nvlist_t *top_nvl)
4735 {
4736 int i;
4737 char ld[2] = { '\0', '\0' };
4738 char who_buf[ZFS_MAXNAMELEN+32];
4739 char base_type;
4740 char set_type;
4741 nvlist_t *base_nvl = NULL;
4742 nvlist_t *set_nvl = NULL;
4743 nvlist_t *nvl;
4744
4745 if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
4746 nomem();
4747 if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) != 0)
4748 nomem();
4749
4750 switch (type) {
4751 case ZFS_DELEG_NAMED_SET_SETS:
4752 case ZFS_DELEG_NAMED_SET:
4753 set_type = ZFS_DELEG_NAMED_SET_SETS;
4754 base_type = ZFS_DELEG_NAMED_SET;
4755 ld[0] = ZFS_DELEG_NA;
4756 break;
4757 case ZFS_DELEG_CREATE_SETS:
4758 case ZFS_DELEG_CREATE:
4759 set_type = ZFS_DELEG_CREATE_SETS;
4760 base_type = ZFS_DELEG_CREATE;
4761 ld[0] = ZFS_DELEG_NA;
4762 break;
4763 case ZFS_DELEG_USER_SETS:
4764 case ZFS_DELEG_USER:
4765 set_type = ZFS_DELEG_USER_SETS;
4766 base_type = ZFS_DELEG_USER;
4767 if (local)
4768 ld[0] = ZFS_DELEG_LOCAL;
4769 if (descend)
4770 ld[1] = ZFS_DELEG_DESCENDENT;
4771 break;
4772 case ZFS_DELEG_GROUP_SETS:
4773 case ZFS_DELEG_GROUP:
4774 set_type = ZFS_DELEG_GROUP_SETS;
4775 base_type = ZFS_DELEG_GROUP;
4776 if (local)
4777 ld[0] = ZFS_DELEG_LOCAL;
4778 if (descend)
4779 ld[1] = ZFS_DELEG_DESCENDENT;
4780 break;
4781 case ZFS_DELEG_EVERYONE_SETS:
4782 case ZFS_DELEG_EVERYONE:
4783 set_type = ZFS_DELEG_EVERYONE_SETS;
4784 base_type = ZFS_DELEG_EVERYONE;
4785 if (local)
4786 ld[0] = ZFS_DELEG_LOCAL;
4787 if (descend)
4788 ld[1] = ZFS_DELEG_DESCENDENT;
4789 }
4790
4791 if (perms != NULL) {
4792 char *curr = perms;
4793 char *end = curr + strlen(perms);
4794
4795 while (curr < end) {
4796 char *delim = strchr(curr, ',');
4797 if (delim == NULL)
4798 delim = end;
4799 else
4800 *delim = '\0';
4801
4802 if (curr[0] == '@')
4803 nvl = set_nvl;
4804 else
4805 nvl = base_nvl;
4806
4807 (void) nvlist_add_boolean(nvl, curr);
4808 if (delim != end)
4809 *delim = ',';
4810 curr = delim + 1;
4811 }
4812
4813 for (i = 0; i < 2; i++) {
4814 char locality = ld[i];
4815 if (locality == 0)
4816 continue;
4817
4818 if (!nvlist_empty(base_nvl)) {
4819 if (who != NULL)
4820 (void) snprintf(who_buf,
4821 sizeof (who_buf), "%c%c$%s",
4822 base_type, locality, who);
4823 else
4824 (void) snprintf(who_buf,
4825 sizeof (who_buf), "%c%c$",
4826 base_type, locality);
4827
4828 (void) nvlist_add_nvlist(top_nvl, who_buf,
4829 base_nvl);
4830 }
4831
4832
4833 if (!nvlist_empty(set_nvl)) {
4834 if (who != NULL)
4835 (void) snprintf(who_buf,
4836 sizeof (who_buf), "%c%c$%s",
4837 set_type, locality, who);
4838 else
4839 (void) snprintf(who_buf,
4840 sizeof (who_buf), "%c%c$",
4841 set_type, locality);
4842
4843 (void) nvlist_add_nvlist(top_nvl, who_buf,
4844 set_nvl);
4845 }
4846 }
4847 } else {
4848 for (i = 0; i < 2; i++) {
4849 char locality = ld[i];
4850 if (locality == 0)
4851 continue;
4852
4853 if (who != NULL)
4854 (void) snprintf(who_buf, sizeof (who_buf),
4855 "%c%c$%s", base_type, locality, who);
4856 else
4857 (void) snprintf(who_buf, sizeof (who_buf),
4858 "%c%c$", base_type, locality);
4859 (void) nvlist_add_boolean(top_nvl, who_buf);
4860
4861 if (who != NULL)
4862 (void) snprintf(who_buf, sizeof (who_buf),
4863 "%c%c$%s", set_type, locality, who);
4864 else
4865 (void) snprintf(who_buf, sizeof (who_buf),
4866 "%c%c$", set_type, locality);
4867 (void) nvlist_add_boolean(top_nvl, who_buf);
4868 }
4869 }
4870 }
4871
4872 static int
4873 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
4874 {
4875 if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
4876 nomem();
4877
4878 if (opts->set) {
4879 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
4880 opts->descend, opts->who, opts->perms, *nvlp);
4881 } else if (opts->create) {
4882 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
4883 opts->descend, NULL, opts->perms, *nvlp);
4884 } else if (opts->everyone) {
4885 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
4886 opts->descend, NULL, opts->perms, *nvlp);
4887 } else {
4888 char *curr = opts->who;
4889 char *end = curr + strlen(curr);
4890
4891 while (curr < end) {
4892 const char *who;
4893 zfs_deleg_who_type_t who_type;
4894 char *endch;
4895 char *delim = strchr(curr, ',');
4896 char errbuf[256];
4897 char id[64];
4898 struct passwd *p = NULL;
4899 struct group *g = NULL;
4900
4901 uid_t rid;
4902 if (delim == NULL)
4903 delim = end;
4904 else
4905 *delim = '\0';
4906
4907 rid = (uid_t)strtol(curr, &endch, 0);
4908 if (opts->user) {
4909 who_type = ZFS_DELEG_USER;
4910 if (*endch != '\0')
4911 p = getpwnam(curr);
4912 else
4913 p = getpwuid(rid);
4914
4915 if (p != NULL)
4916 rid = p->pw_uid;
4917 else {
4918 (void) snprintf(errbuf, 256, gettext(
4919 "invalid user %s"), curr);
4920 allow_usage(un, B_TRUE, errbuf);
4921 }
4922 } else if (opts->group) {
4923 who_type = ZFS_DELEG_GROUP;
4924 if (*endch != '\0')
4925 g = getgrnam(curr);
4926 else
4927 g = getgrgid(rid);
4928
4929 if (g != NULL)
4930 rid = g->gr_gid;
4931 else {
4932 (void) snprintf(errbuf, 256, gettext(
4933 "invalid group %s"), curr);
4934 allow_usage(un, B_TRUE, errbuf);
4935 }
4936 } else {
4937 if (*endch != '\0') {
4938 p = getpwnam(curr);
4939 } else {
4940 p = getpwuid(rid);
4941 }
4942
4943 if (p == NULL)
4944 if (*endch != '\0') {
4945 g = getgrnam(curr);
4946 } else {
4947 g = getgrgid(rid);
4948 }
4949
4950 if (p != NULL) {
4951 who_type = ZFS_DELEG_USER;
4952 rid = p->pw_uid;
4953 } else if (g != NULL) {
4954 who_type = ZFS_DELEG_GROUP;
4955 rid = g->gr_gid;
4956 } else {
4957 (void) snprintf(errbuf, 256, gettext(
4958 "invalid user/group %s"), curr);
4959 allow_usage(un, B_TRUE, errbuf);
4960 }
4961 }
4962
4963 (void) sprintf(id, "%u", rid);
4964 who = id;
4965
4966 store_allow_perm(who_type, opts->local,
4967 opts->descend, who, opts->perms, *nvlp);
4968 curr = delim + 1;
4969 }
4970 }
4971
4972 return (0);
4973 }
4974
4975 static void
4976 print_set_creat_perms(uu_avl_t *who_avl)
4977 {
4978 const char *sc_title[] = {
4979 gettext("Permission sets:\n"),
4980 gettext("Create time permissions:\n"),
4981 NULL
4982 };
4983 const char **title_ptr = sc_title;
4984 who_perm_node_t *who_node = NULL;
4985 int prev_weight = -1;
4986
4987 for (who_node = uu_avl_first(who_avl); who_node != NULL;
4988 who_node = uu_avl_next(who_avl, who_node)) {
4989 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
4990 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
4991 const char *who_name = who_node->who_perm.who_name;
4992 int weight = who_type2weight(who_type);
4993 boolean_t first = B_TRUE;
4994 deleg_perm_node_t *deleg_node;
4995
4996 if (prev_weight != weight) {
4997 (void) printf(*title_ptr++);
4998 prev_weight = weight;
4999 }
5000
5001 if (who_name == NULL || strnlen(who_name, 1) == 0)
5002 (void) printf("\t");
5003 else
5004 (void) printf("\t%s ", who_name);
5005
5006 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5007 deleg_node = uu_avl_next(avl, deleg_node)) {
5008 if (first) {
5009 (void) printf("%s",
5010 deleg_node->dpn_perm.dp_name);
5011 first = B_FALSE;
5012 } else
5013 (void) printf(",%s",
5014 deleg_node->dpn_perm.dp_name);
5015 }
5016
5017 (void) printf("\n");
5018 }
5019 }
5020
5021 static void inline
5022 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5023 const char *title)
5024 {
5025 who_perm_node_t *who_node = NULL;
5026 boolean_t prt_title = B_TRUE;
5027 uu_avl_walk_t *walk;
5028
5029 if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5030 nomem();
5031
5032 while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5033 const char *who_name = who_node->who_perm.who_name;
5034 const char *nice_who_name = who_node->who_perm.who_ug_name;
5035 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5036 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5037 char delim = ' ';
5038 deleg_perm_node_t *deleg_node;
5039 boolean_t prt_who = B_TRUE;
5040
5041 for (deleg_node = uu_avl_first(avl);
5042 deleg_node != NULL;
5043 deleg_node = uu_avl_next(avl, deleg_node)) {
5044 if (local != deleg_node->dpn_perm.dp_local ||
5045 descend != deleg_node->dpn_perm.dp_descend)
5046 continue;
5047
5048 if (prt_who) {
5049 const char *who = NULL;
5050 if (prt_title) {
5051 prt_title = B_FALSE;
5052 (void) printf(title);
5053 }
5054
5055 switch (who_type) {
5056 case ZFS_DELEG_USER_SETS:
5057 case ZFS_DELEG_USER:
5058 who = gettext("user");
5059 if (nice_who_name)
5060 who_name = nice_who_name;
5061 break;
5062 case ZFS_DELEG_GROUP_SETS:
5063 case ZFS_DELEG_GROUP:
5064 who = gettext("group");
5065 if (nice_who_name)
5066 who_name = nice_who_name;
5067 break;
5068 case ZFS_DELEG_EVERYONE_SETS:
5069 case ZFS_DELEG_EVERYONE:
5070 who = gettext("everyone");
5071 who_name = NULL;
5072 }
5073
5074 prt_who = B_FALSE;
5075 if (who_name == NULL)
5076 (void) printf("\t%s", who);
5077 else
5078 (void) printf("\t%s %s", who, who_name);
5079 }
5080
5081 (void) printf("%c%s", delim,
5082 deleg_node->dpn_perm.dp_name);
5083 delim = ',';
5084 }
5085
5086 if (!prt_who)
5087 (void) printf("\n");
5088 }
5089
5090 uu_avl_walk_end(walk);
5091 }
5092
5093 static void
5094 print_fs_perms(fs_perm_set_t *fspset)
5095 {
5096 fs_perm_node_t *node = NULL;
5097 char buf[ZFS_MAXNAMELEN+32];
5098 const char *dsname = buf;
5099
5100 for (node = uu_list_first(fspset->fsps_list); node != NULL;
5101 node = uu_list_next(fspset->fsps_list, node)) {
5102 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5103 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5104 int left = 0;
5105
5106 (void) snprintf(buf, ZFS_MAXNAMELEN+32,
5107 gettext("---- Permissions on %s "),
5108 node->fspn_fsperm.fsp_name);
5109 (void) printf(dsname);
5110 left = 70 - strlen(buf);
5111 while (left-- > 0)
5112 (void) printf("-");
5113 (void) printf("\n");
5114
5115 print_set_creat_perms(sc_avl);
5116 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5117 gettext("Local permissions:\n"));
5118 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5119 gettext("Descendent permissions:\n"));
5120 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5121 gettext("Local+Descendent permissions:\n"));
5122 }
5123 }
5124
5125 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5126
5127 struct deleg_perms {
5128 boolean_t un;
5129 nvlist_t *nvl;
5130 };
5131
5132 static int
5133 set_deleg_perms(zfs_handle_t *zhp, void *data)
5134 {
5135 struct deleg_perms *perms = (struct deleg_perms *)data;
5136 zfs_type_t zfs_type = zfs_get_type(zhp);
5137
5138 if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5139 return (0);
5140
5141 return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5142 }
5143
5144 static int
5145 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5146 {
5147 zfs_handle_t *zhp;
5148 nvlist_t *perm_nvl = NULL;
5149 nvlist_t *update_perm_nvl = NULL;
5150 int error = 1;
5151 int c;
5152 struct allow_opts opts = { 0 };
5153
5154 const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5155
5156 /* check opts */
5157 while ((c = getopt(argc, argv, optstr)) != -1) {
5158 switch (c) {
5159 case 'l':
5160 opts.local = B_TRUE;
5161 break;
5162 case 'd':
5163 opts.descend = B_TRUE;
5164 break;
5165 case 'u':
5166 opts.user = B_TRUE;
5167 break;
5168 case 'g':
5169 opts.group = B_TRUE;
5170 break;
5171 case 'e':
5172 opts.everyone = B_TRUE;
5173 break;
5174 case 's':
5175 opts.set = B_TRUE;
5176 break;
5177 case 'c':
5178 opts.create = B_TRUE;
5179 break;
5180 case 'r':
5181 opts.recursive = B_TRUE;
5182 break;
5183 case ':':
5184 (void) fprintf(stderr, gettext("missing argument for "
5185 "'%c' option\n"), optopt);
5186 usage(B_FALSE);
5187 break;
5188 case 'h':
5189 opts.prt_usage = B_TRUE;
5190 break;
5191 case '?':
5192 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5193 optopt);
5194 usage(B_FALSE);
5195 }
5196 }
5197
5198 argc -= optind;
5199 argv += optind;
5200
5201 /* check arguments */
5202 parse_allow_args(argc, argv, un, &opts);
5203
5204 /* try to open the dataset */
5205 if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5206 ZFS_TYPE_VOLUME)) == NULL) {
5207 (void) fprintf(stderr, "Failed to open dataset: %s\n",
5208 opts.dataset);
5209 return (-1);
5210 }
5211
5212 if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5213 goto cleanup2;
5214
5215 fs_perm_set_init(&fs_perm_set);
5216 if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5217 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5218 goto cleanup1;
5219 }
5220
5221 if (opts.prt_perms)
5222 print_fs_perms(&fs_perm_set);
5223 else {
5224 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5225 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5226 goto cleanup0;
5227
5228 if (un && opts.recursive) {
5229 struct deleg_perms data = { un, update_perm_nvl };
5230 if (zfs_iter_filesystems(zhp, set_deleg_perms,
5231 &data) != 0)
5232 goto cleanup0;
5233 }
5234 }
5235
5236 error = 0;
5237
5238 cleanup0:
5239 nvlist_free(perm_nvl);
5240 if (update_perm_nvl != NULL)
5241 nvlist_free(update_perm_nvl);
5242 cleanup1:
5243 fs_perm_set_fini(&fs_perm_set);
5244 cleanup2:
5245 zfs_close(zhp);
5246
5247 return (error);
5248 }
5249
5250 static int
5251 zfs_do_allow(int argc, char **argv)
5252 {
5253 return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5254 }
5255
5256 static int
5257 zfs_do_unallow(int argc, char **argv)
5258 {
5259 return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5260 }
5261
5262 static int
5263 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5264 {
5265 int errors = 0;
5266 int i;
5267 const char *tag;
5268 boolean_t recursive = B_FALSE;
5269 const char *opts = holding ? "rt" : "r";
5270 int c;
5271
5272 /* check options */
5273 while ((c = getopt(argc, argv, opts)) != -1) {
5274 switch (c) {
5275 case 'r':
5276 recursive = B_TRUE;
5277 break;
5278 case '?':
5279 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5280 optopt);
5281 usage(B_FALSE);
5282 }
5283 }
5284
5285 argc -= optind;
5286 argv += optind;
5287
5288 /* check number of arguments */
5289 if (argc < 2)
5290 usage(B_FALSE);
5291
5292 tag = argv[0];
5293 --argc;
5294 ++argv;
5295
5296 if (holding && tag[0] == '.') {
5297 /* tags starting with '.' are reserved for libzfs */
5298 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5299 usage(B_FALSE);
5300 }
5301
5302 for (i = 0; i < argc; ++i) {
5303 zfs_handle_t *zhp;
5304 char parent[ZFS_MAXNAMELEN];
5305 const char *delim;
5306 char *path = argv[i];
5307
5308 delim = strchr(path, '@');
5309 if (delim == NULL) {
5310 (void) fprintf(stderr,
5311 gettext("'%s' is not a snapshot\n"), path);
5312 ++errors;
5313 continue;
5314 }
5315 (void) strncpy(parent, path, delim - path);
5316 parent[delim - path] = '\0';
5317
5318 zhp = zfs_open(g_zfs, parent,
5319 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5320 if (zhp == NULL) {
5321 ++errors;
5322 continue;
5323 }
5324 if (holding) {
5325 if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5326 ++errors;
5327 } else {
5328 if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5329 ++errors;
5330 }
5331 zfs_close(zhp);
5332 }
5333
5334 return (errors != 0);
5335 }
5336
5337 /*
5338 * zfs hold [-r] [-t] <tag> <snap> ...
5339 *
5340 * -r Recursively hold
5341 *
5342 * Apply a user-hold with the given tag to the list of snapshots.
5343 */
5344 static int
5345 zfs_do_hold(int argc, char **argv)
5346 {
5347 return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5348 }
5349
5350 /*
5351 * zfs release [-r] <tag> <snap> ...
5352 *
5353 * -r Recursively release
5354 *
5355 * Release a user-hold with the given tag from the list of snapshots.
5356 */
5357 static int
5358 zfs_do_release(int argc, char **argv)
5359 {
5360 return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5361 }
5362
5363 typedef struct holds_cbdata {
5364 boolean_t cb_recursive;
5365 const char *cb_snapname;
5366 nvlist_t **cb_nvlp;
5367 size_t cb_max_namelen;
5368 size_t cb_max_taglen;
5369 } holds_cbdata_t;
5370
5371 #define STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5372 #define DATETIME_BUF_LEN (32)
5373 /*
5374 *
5375 */
5376 static void
5377 print_holds(boolean_t scripted, size_t nwidth, size_t tagwidth, nvlist_t *nvl)
5378 {
5379 int i;
5380 nvpair_t *nvp = NULL;
5381 char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5382 const char *col;
5383
5384 if (!scripted) {
5385 for (i = 0; i < 3; i++) {
5386 col = gettext(hdr_cols[i]);
5387 if (i < 2)
5388 (void) printf("%-*s ", i ? tagwidth : nwidth,
5389 col);
5390 else
5391 (void) printf("%s\n", col);
5392 }
5393 }
5394
5395 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5396 char *zname = nvpair_name(nvp);
5397 nvlist_t *nvl2;
5398 nvpair_t *nvp2 = NULL;
5399 (void) nvpair_value_nvlist(nvp, &nvl2);
5400 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5401 char tsbuf[DATETIME_BUF_LEN];
5402 char *tagname = nvpair_name(nvp2);
5403 uint64_t val = 0;
5404 time_t time;
5405 struct tm t;
5406 char sep = scripted ? '\t' : ' ';
5407 size_t sepnum = scripted ? 1 : 2;
5408
5409 (void) nvpair_value_uint64(nvp2, &val);
5410 time = (time_t)val;
5411 (void) localtime_r(&time, &t);
5412 (void) strftime(tsbuf, DATETIME_BUF_LEN,
5413 gettext(STRFTIME_FMT_STR), &t);
5414
5415 (void) printf("%-*s%*c%-*s%*c%s\n", nwidth, zname,
5416 sepnum, sep, tagwidth, tagname, sepnum, sep, tsbuf);
5417 }
5418 }
5419 }
5420
5421 /*
5422 * Generic callback function to list a dataset or snapshot.
5423 */
5424 static int
5425 holds_callback(zfs_handle_t *zhp, void *data)
5426 {
5427 holds_cbdata_t *cbp = data;
5428 nvlist_t *top_nvl = *cbp->cb_nvlp;
5429 nvlist_t *nvl = NULL;
5430 nvpair_t *nvp = NULL;
5431 const char *zname = zfs_get_name(zhp);
5432 size_t znamelen = strnlen(zname, ZFS_MAXNAMELEN);
5433
5434 if (cbp->cb_recursive) {
5435 const char *snapname;
5436 char *delim = strchr(zname, '@');
5437 if (delim == NULL)
5438 return (0);
5439
5440 snapname = delim + 1;
5441 if (strcmp(cbp->cb_snapname, snapname))
5442 return (0);
5443 }
5444
5445 if (zfs_get_holds(zhp, &nvl) != 0)
5446 return (-1);
5447
5448 if (znamelen > cbp->cb_max_namelen)
5449 cbp->cb_max_namelen = znamelen;
5450
5451 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5452 const char *tag = nvpair_name(nvp);
5453 size_t taglen = strnlen(tag, MAXNAMELEN);
5454 if (taglen > cbp->cb_max_taglen)
5455 cbp->cb_max_taglen = taglen;
5456 }
5457
5458 return (nvlist_add_nvlist(top_nvl, zname, nvl));
5459 }
5460
5461 /*
5462 * zfs holds [-r] <snap> ...
5463 *
5464 * -r Recursively hold
5465 */
5466 static int
5467 zfs_do_holds(int argc, char **argv)
5468 {
5469 int errors = 0;
5470 int c;
5471 int i;
5472 boolean_t scripted = B_FALSE;
5473 boolean_t recursive = B_FALSE;
5474 const char *opts = "rH";
5475 nvlist_t *nvl;
5476
5477 int types = ZFS_TYPE_SNAPSHOT;
5478 holds_cbdata_t cb = { 0 };
5479
5480 int limit = 0;
5481 int ret = 0;
5482 int flags = 0;
5483
5484 /* check options */
5485 while ((c = getopt(argc, argv, opts)) != -1) {
5486 switch (c) {
5487 case 'r':
5488 recursive = B_TRUE;
5489 break;
5490 case 'H':
5491 scripted = B_TRUE;
5492 break;
5493 case '?':
5494 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5495 optopt);
5496 usage(B_FALSE);
5497 }
5498 }
5499
5500 if (recursive) {
5501 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
5502 flags |= ZFS_ITER_RECURSE;
5503 }
5504
5505 argc -= optind;
5506 argv += optind;
5507
5508 /* check number of arguments */
5509 if (argc < 1)
5510 usage(B_FALSE);
5511
5512 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
5513 nomem();
5514
5515 for (i = 0; i < argc; ++i) {
5516 char *snapshot = argv[i];
5517 const char *delim;
5518 const char *snapname;
5519
5520 delim = strchr(snapshot, '@');
5521 if (delim == NULL) {
5522 (void) fprintf(stderr,
5523 gettext("'%s' is not a snapshot\n"), snapshot);
5524 ++errors;
5525 continue;
5526 }
5527 snapname = delim + 1;
5528 if (recursive)
5529 snapshot[delim - snapshot] = '\0';
5530
5531 cb.cb_recursive = recursive;
5532 cb.cb_snapname = snapname;
5533 cb.cb_nvlp = &nvl;
5534
5535 /*
5536 * 1. collect holds data, set format options
5537 */
5538 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
5539 holds_callback, &cb);
5540 if (ret != 0)
5541 ++errors;
5542 }
5543
5544 /*
5545 * 2. print holds data
5546 */
5547 print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
5548
5549 if (nvlist_empty(nvl))
5550 (void) printf(gettext("no datasets available\n"));
5551
5552 nvlist_free(nvl);
5553
5554 return (0 != errors);
5555 }
5556
5557 #define CHECK_SPINNER 30
5558 #define SPINNER_TIME 3 /* seconds */
5559 #define MOUNT_TIME 5 /* seconds */
5560
5561 static int
5562 get_one_dataset(zfs_handle_t *zhp, void *data)
5563 {
5564 static char *spin[] = { "-", "\\", "|", "/" };
5565 static int spinval = 0;
5566 static int spincheck = 0;
5567 static time_t last_spin_time = (time_t)0;
5568 get_all_cb_t *cbp = data;
5569 zfs_type_t type = zfs_get_type(zhp);
5570
5571 if (cbp->cb_verbose) {
5572 if (--spincheck < 0) {
5573 time_t now = time(NULL);
5574 if (last_spin_time + SPINNER_TIME < now) {
5575 update_progress(spin[spinval++ % 4]);
5576 last_spin_time = now;
5577 }
5578 spincheck = CHECK_SPINNER;
5579 }
5580 }
5581
5582 /*
5583 * Interate over any nested datasets.
5584 */
5585 if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
5586 zfs_close(zhp);
5587 return (1);
5588 }
5589
5590 /*
5591 * Skip any datasets whose type does not match.
5592 */
5593 if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
5594 zfs_close(zhp);
5595 return (0);
5596 }
5597 libzfs_add_handle(cbp, zhp);
5598 assert(cbp->cb_used <= cbp->cb_alloc);
5599
5600 return (0);
5601 }
5602
5603 static void
5604 get_all_datasets(zfs_handle_t ***dslist, size_t *count, boolean_t verbose)
5605 {
5606 get_all_cb_t cb = { 0 };
5607 cb.cb_verbose = verbose;
5608 cb.cb_getone = get_one_dataset;
5609
5610 if (verbose)
5611 set_progress_header(gettext("Reading ZFS config"));
5612 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
5613
5614 *dslist = cb.cb_handles;
5615 *count = cb.cb_used;
5616
5617 if (verbose)
5618 finish_progress(gettext("done."));
5619 }
5620
5621 /*
5622 * Generic callback for sharing or mounting filesystems. Because the code is so
5623 * similar, we have a common function with an extra parameter to determine which
5624 * mode we are using.
5625 */
5626 #define OP_SHARE 0x1
5627 #define OP_MOUNT 0x2
5628
5629 /*
5630 * Share or mount a dataset.
5631 */
5632 static int
5633 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
5634 boolean_t explicit, const char *options)
5635 {
5636 char mountpoint[ZFS_MAXPROPLEN];
5637 char shareopts[ZFS_MAXPROPLEN];
5638 char smbshareopts[ZFS_MAXPROPLEN];
5639 const char *cmdname = op == OP_SHARE ? "share" : "mount";
5640 struct mnttab mnt;
5641 uint64_t zoned, canmount;
5642 boolean_t shared_nfs, shared_smb;
5643
5644 assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
5645
5646 /*
5647 * Check to make sure we can mount/share this dataset. If we
5648 * are in the global zone and the filesystem is exported to a
5649 * local zone, or if we are in a local zone and the
5650 * filesystem is not exported, then it is an error.
5651 */
5652 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
5653
5654 if (zoned && getzoneid() == GLOBAL_ZONEID) {
5655 if (!explicit)
5656 return (0);
5657
5658 (void) fprintf(stderr, gettext("cannot %s '%s': "
5659 "dataset is exported to a local zone\n"), cmdname,
5660 zfs_get_name(zhp));
5661 return (1);
5662
5663 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
5664 if (!explicit)
5665 return (0);
5666
5667 (void) fprintf(stderr, gettext("cannot %s '%s': "
5668 "permission denied\n"), cmdname,
5669 zfs_get_name(zhp));
5670 return (1);
5671 }
5672
5673 /*
5674 * Ignore any filesystems which don't apply to us. This
5675 * includes those with a legacy mountpoint, or those with
5676 * legacy share options.
5677 */
5678 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
5679 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
5680 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
5681 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
5682 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
5683 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
5684
5685 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
5686 strcmp(smbshareopts, "off") == 0) {
5687 if (!explicit)
5688 return (0);
5689
5690 (void) fprintf(stderr, gettext("cannot share '%s': "
5691 "legacy share\n"), zfs_get_name(zhp));
5692 (void) fprintf(stderr, gettext("use share(1M) to "
5693 "share this filesystem, or set "
5694 "sharenfs property on\n"));
5695 return (1);
5696 }
5697
5698 /*
5699 * We cannot share or mount legacy filesystems. If the
5700 * shareopts is non-legacy but the mountpoint is legacy, we
5701 * treat it as a legacy share.
5702 */
5703 if (strcmp(mountpoint, "legacy") == 0) {
5704 if (!explicit)
5705 return (0);
5706
5707 (void) fprintf(stderr, gettext("cannot %s '%s': "
5708 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
5709 (void) fprintf(stderr, gettext("use %s(1M) to "
5710 "%s this filesystem\n"), cmdname, cmdname);
5711 return (1);
5712 }
5713
5714 if (strcmp(mountpoint, "none") == 0) {
5715 if (!explicit)
5716 return (0);
5717
5718 (void) fprintf(stderr, gettext("cannot %s '%s': no "
5719 "mountpoint set\n"), cmdname, zfs_get_name(zhp));
5720 return (1);
5721 }
5722
5723 /*
5724 * canmount explicit outcome
5725 * on no pass through
5726 * on yes pass through
5727 * off no return 0
5728 * off yes display error, return 1
5729 * noauto no return 0
5730 * noauto yes pass through
5731 */
5732 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
5733 if (canmount == ZFS_CANMOUNT_OFF) {
5734 if (!explicit)
5735 return (0);
5736
5737 (void) fprintf(stderr, gettext("cannot %s '%s': "
5738 "'canmount' property is set to 'off'\n"), cmdname,
5739 zfs_get_name(zhp));
5740 return (1);
5741 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
5742 return (0);
5743 }
5744
5745 /*
5746 * At this point, we have verified that the mountpoint and/or
5747 * shareopts are appropriate for auto management. If the
5748 * filesystem is already mounted or shared, return (failing
5749 * for explicit requests); otherwise mount or share the
5750 * filesystem.
5751 */
5752 switch (op) {
5753 case OP_SHARE:
5754
5755 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
5756 shared_smb = zfs_is_shared_smb(zhp, NULL);
5757
5758 if (shared_nfs && shared_smb ||
5759 (shared_nfs && strcmp(shareopts, "on") == 0 &&
5760 strcmp(smbshareopts, "off") == 0) ||
5761 (shared_smb && strcmp(smbshareopts, "on") == 0 &&
5762 strcmp(shareopts, "off") == 0)) {
5763 if (!explicit)
5764 return (0);
5765
5766 (void) fprintf(stderr, gettext("cannot share "
5767 "'%s': filesystem already shared\n"),
5768 zfs_get_name(zhp));
5769 return (1);
5770 }
5771
5772 if (!zfs_is_mounted(zhp, NULL) &&
5773 zfs_mount(zhp, NULL, 0) != 0)
5774 return (1);
5775
5776 if (protocol == NULL) {
5777 if (zfs_shareall(zhp) != 0)
5778 return (1);
5779 } else if (strcmp(protocol, "nfs") == 0) {
5780 if (zfs_share_nfs(zhp))
5781 return (1);
5782 } else if (strcmp(protocol, "smb") == 0) {
5783 if (zfs_share_smb(zhp))
5784 return (1);
5785 } else {
5786 (void) fprintf(stderr, gettext("cannot share "
5787 "'%s': invalid share type '%s' "
5788 "specified\n"),
5789 zfs_get_name(zhp), protocol);
5790 return (1);
5791 }
5792
5793 break;
5794
5795 case OP_MOUNT:
5796 if (options == NULL)
5797 mnt.mnt_mntopts = "";
5798 else
5799 mnt.mnt_mntopts = (char *)options;
5800
5801 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
5802 zfs_is_mounted(zhp, NULL)) {
5803 if (!explicit)
5804 return (0);
5805
5806 (void) fprintf(stderr, gettext("cannot mount "
5807 "'%s': filesystem already mounted\n"),
5808 zfs_get_name(zhp));
5809 return (1);
5810 }
5811
5812 if (zfs_mount(zhp, options, flags) != 0)
5813 return (1);
5814 break;
5815 }
5816
5817 return (0);
5818 }
5819
5820 /*
5821 * Reports progress in the form "(current/total)". Not thread-safe.
5822 */
5823 static void
5824 report_mount_progress(int current, int total)
5825 {
5826 static time_t last_progress_time = 0;
5827 time_t now = time(NULL);
5828 char info[32];
5829
5830 /* report 1..n instead of 0..n-1 */
5831 ++current;
5832
5833 /* display header if we're here for the first time */
5834 if (current == 1) {
5835 set_progress_header(gettext("Mounting ZFS filesystems"));
5836 } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
5837 /* too soon to report again */
5838 return;
5839 }
5840
5841 last_progress_time = now;
5842
5843 (void) sprintf(info, "(%d/%d)", current, total);
5844
5845 if (current == total)
5846 finish_progress(info);
5847 else
5848 update_progress(info);
5849 }
5850
5851 static void
5852 append_options(char *mntopts, char *newopts)
5853 {
5854 int len = strlen(mntopts);
5855
5856 /* original length plus new string to append plus 1 for the comma */
5857 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
5858 (void) fprintf(stderr, gettext("the opts argument for "
5859 "'%c' option is too long (more than %d chars)\n"),
5860 "-o", MNT_LINE_MAX);
5861 usage(B_FALSE);
5862 }
5863
5864 if (*mntopts)
5865 mntopts[len++] = ',';
5866
5867 (void) strcpy(&mntopts[len], newopts);
5868 }
5869
5870 static int
5871 share_mount(int op, int argc, char **argv)
5872 {
5873 int do_all = 0;
5874 boolean_t verbose = B_FALSE;
5875 int c, ret = 0;
5876 char *options = NULL;
5877 int flags = 0;
5878
5879 /* check options */
5880 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
5881 != -1) {
5882 switch (c) {
5883 case 'a':
5884 do_all = 1;
5885 break;
5886 case 'v':
5887 verbose = B_TRUE;
5888 break;
5889 case 'o':
5890 if (*optarg == '\0') {
5891 (void) fprintf(stderr, gettext("empty mount "
5892 "options (-o) specified\n"));
5893 usage(B_FALSE);
5894 }
5895
5896 if (options == NULL)
5897 options = safe_malloc(MNT_LINE_MAX + 1);
5898
5899 /* option validation is done later */
5900 append_options(options, optarg);
5901 break;
5902
5903 case 'O':
5904 flags |= MS_OVERLAY;
5905 break;
5906 case ':':
5907 (void) fprintf(stderr, gettext("missing argument for "
5908 "'%c' option\n"), optopt);
5909 usage(B_FALSE);
5910 break;
5911 case '?':
5912 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5913 optopt);
5914 usage(B_FALSE);
5915 }
5916 }
5917
5918 argc -= optind;
5919 argv += optind;
5920
5921 /* check number of arguments */
5922 if (do_all) {
5923 zfs_handle_t **dslist = NULL;
5924 size_t i, count = 0;
5925 char *protocol = NULL;
5926
5927 if (op == OP_SHARE && argc > 0) {
5928 if (strcmp(argv[0], "nfs") != 0 &&
5929 strcmp(argv[0], "smb") != 0) {
5930 (void) fprintf(stderr, gettext("share type "
5931 "must be 'nfs' or 'smb'\n"));
5932 usage(B_FALSE);
5933 }
5934 protocol = argv[0];
5935 argc--;
5936 argv++;
5937 }
5938
5939 if (argc != 0) {
5940 (void) fprintf(stderr, gettext("too many arguments\n"));
5941 usage(B_FALSE);
5942 }
5943
5944 start_progress_timer();
5945 get_all_datasets(&dslist, &count, verbose);
5946
5947 if (count == 0)
5948 return (0);
5949
5950 qsort(dslist, count, sizeof (void *), libzfs_dataset_cmp);
5951
5952 for (i = 0; i < count; i++) {
5953 if (verbose)
5954 report_mount_progress(i, count);
5955
5956 if (share_mount_one(dslist[i], op, flags, protocol,
5957 B_FALSE, options) != 0)
5958 ret = 1;
5959 zfs_close(dslist[i]);
5960 }
5961
5962 free(dslist);
5963 } else if (argc == 0) {
5964 struct mnttab entry;
5965
5966 if ((op == OP_SHARE) || (options != NULL)) {
5967 (void) fprintf(stderr, gettext("missing filesystem "
5968 "argument (specify -a for all)\n"));
5969 usage(B_FALSE);
5970 }
5971
5972 /*
5973 * When mount is given no arguments, go through /etc/mnttab and
5974 * display any active ZFS mounts. We hide any snapshots, since
5975 * they are controlled automatically.
5976 */
5977 rewind(mnttab_file);
5978 while (getmntent(mnttab_file, &entry) == 0) {
5979 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
5980 strchr(entry.mnt_special, '@') != NULL)
5981 continue;
5982
5983 (void) printf("%-30s %s\n", entry.mnt_special,
5984 entry.mnt_mountp);
5985 }
5986
5987 } else {
5988 zfs_handle_t *zhp;
5989
5990 if (argc > 1) {
5991 (void) fprintf(stderr,
5992 gettext("too many arguments\n"));
5993 usage(B_FALSE);
5994 }
5995
5996 if ((zhp = zfs_open(g_zfs, argv[0],
5997 ZFS_TYPE_FILESYSTEM)) == NULL) {
5998 ret = 1;
5999 } else {
6000 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
6001 options);
6002 zfs_close(zhp);
6003 }
6004 }
6005
6006 return (ret);
6007 }
6008
6009 /*
6010 * zfs mount -a [nfs]
6011 * zfs mount filesystem
6012 *
6013 * Mount all filesystems, or mount the given filesystem.
6014 */
6015 static int
6016 zfs_do_mount(int argc, char **argv)
6017 {
6018 return (share_mount(OP_MOUNT, argc, argv));
6019 }
6020
6021 /*
6022 * zfs share -a [nfs | smb]
6023 * zfs share filesystem
6024 *
6025 * Share all filesystems, or share the given filesystem.
6026 */
6027 static int
6028 zfs_do_share(int argc, char **argv)
6029 {
6030 return (share_mount(OP_SHARE, argc, argv));
6031 }
6032
6033 typedef struct unshare_unmount_node {
6034 zfs_handle_t *un_zhp;
6035 char *un_mountp;
6036 uu_avl_node_t un_avlnode;
6037 } unshare_unmount_node_t;
6038
6039 /* ARGSUSED */
6040 static int
6041 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
6042 {
6043 const unshare_unmount_node_t *l = larg;
6044 const unshare_unmount_node_t *r = rarg;
6045
6046 return (strcmp(l->un_mountp, r->un_mountp));
6047 }
6048
6049 /*
6050 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an
6051 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
6052 * and unmount it appropriately.
6053 */
6054 static int
6055 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
6056 {
6057 zfs_handle_t *zhp;
6058 int ret = 0;
6059 struct stat64 statbuf;
6060 struct extmnttab entry;
6061 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
6062 ino_t path_inode;
6063
6064 /*
6065 * Search for the path in /etc/mnttab. Rather than looking for the
6066 * specific path, which can be fooled by non-standard paths (i.e. ".."
6067 * or "//"), we stat() the path and search for the corresponding
6068 * (major,minor) device pair.
6069 */
6070 if (stat64(path, &statbuf) != 0) {
6071 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6072 cmdname, path, strerror(errno));
6073 return (1);
6074 }
6075 path_inode = statbuf.st_ino;
6076
6077 /*
6078 * Search for the given (major,minor) pair in the mount table.
6079 */
6080 rewind(mnttab_file);
6081 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6082 if (entry.mnt_major == major(statbuf.st_dev) &&
6083 entry.mnt_minor == minor(statbuf.st_dev))
6084 break;
6085 }
6086 if (ret != 0) {
6087 if (op == OP_SHARE) {
6088 (void) fprintf(stderr, gettext("cannot %s '%s': not "
6089 "currently mounted\n"), cmdname, path);
6090 return (1);
6091 }
6092 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
6093 path);
6094 if ((ret = umount2(path, flags)) != 0)
6095 (void) fprintf(stderr, gettext("%s: %s\n"), path,
6096 strerror(errno));
6097 return (ret != 0);
6098 }
6099
6100 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6101 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6102 "filesystem\n"), cmdname, path);
6103 return (1);
6104 }
6105
6106 if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6107 ZFS_TYPE_FILESYSTEM)) == NULL)
6108 return (1);
6109
6110 ret = 1;
6111 if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6112 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6113 cmdname, path, strerror(errno));
6114 goto out;
6115 } else if (statbuf.st_ino != path_inode) {
6116 (void) fprintf(stderr, gettext("cannot "
6117 "%s '%s': not a mountpoint\n"), cmdname, path);
6118 goto out;
6119 }
6120
6121 if (op == OP_SHARE) {
6122 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6123 char smbshare_prop[ZFS_MAXPROPLEN];
6124
6125 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6126 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6127 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6128 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6129
6130 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6131 strcmp(smbshare_prop, "off") == 0) {
6132 (void) fprintf(stderr, gettext("cannot unshare "
6133 "'%s': legacy share\n"), path);
6134 (void) fprintf(stderr, gettext("use "
6135 "unshare(1M) to unshare this filesystem\n"));
6136 } else if (!zfs_is_shared(zhp)) {
6137 (void) fprintf(stderr, gettext("cannot unshare '%s': "
6138 "not currently shared\n"), path);
6139 } else {
6140 ret = zfs_unshareall_bypath(zhp, path);
6141 }
6142 } else {
6143 char mtpt_prop[ZFS_MAXPROPLEN];
6144
6145 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6146 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6147
6148 if (is_manual) {
6149 ret = zfs_unmount(zhp, NULL, flags);
6150 } else if (strcmp(mtpt_prop, "legacy") == 0) {
6151 (void) fprintf(stderr, gettext("cannot unmount "
6152 "'%s': legacy mountpoint\n"),
6153 zfs_get_name(zhp));
6154 (void) fprintf(stderr, gettext("use umount(1M) "
6155 "to unmount this filesystem\n"));
6156 } else {
6157 ret = zfs_unmountall(zhp, flags);
6158 }
6159 }
6160
6161 out:
6162 zfs_close(zhp);
6163
6164 return (ret != 0);
6165 }
6166
6167 /*
6168 * Generic callback for unsharing or unmounting a filesystem.
6169 */
6170 static int
6171 unshare_unmount(int op, int argc, char **argv)
6172 {
6173 int do_all = 0;
6174 int flags = 0;
6175 int ret = 0;
6176 int c;
6177 zfs_handle_t *zhp;
6178 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6179 char sharesmb[ZFS_MAXPROPLEN];
6180
6181 /* check options */
6182 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
6183 switch (c) {
6184 case 'a':
6185 do_all = 1;
6186 break;
6187 case 'f':
6188 flags = MS_FORCE;
6189 break;
6190 case '?':
6191 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6192 optopt);
6193 usage(B_FALSE);
6194 }
6195 }
6196
6197 argc -= optind;
6198 argv += optind;
6199
6200 if (do_all) {
6201 /*
6202 * We could make use of zfs_for_each() to walk all datasets in
6203 * the system, but this would be very inefficient, especially
6204 * since we would have to linearly search /etc/mnttab for each
6205 * one. Instead, do one pass through /etc/mnttab looking for
6206 * zfs entries and call zfs_unmount() for each one.
6207 *
6208 * Things get a little tricky if the administrator has created
6209 * mountpoints beneath other ZFS filesystems. In this case, we
6210 * have to unmount the deepest filesystems first. To accomplish
6211 * this, we place all the mountpoints in an AVL tree sorted by
6212 * the special type (dataset name), and walk the result in
6213 * reverse to make sure to get any snapshots first.
6214 */
6215 struct mnttab entry;
6216 uu_avl_pool_t *pool;
6217 uu_avl_t *tree;
6218 unshare_unmount_node_t *node;
6219 uu_avl_index_t idx;
6220 uu_avl_walk_t *walk;
6221
6222 if (argc != 0) {
6223 (void) fprintf(stderr, gettext("too many arguments\n"));
6224 usage(B_FALSE);
6225 }
6226
6227 if (((pool = uu_avl_pool_create("unmount_pool",
6228 sizeof (unshare_unmount_node_t),
6229 offsetof(unshare_unmount_node_t, un_avlnode),
6230 unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6231 ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6232 nomem();
6233
6234 rewind(mnttab_file);
6235 while (getmntent(mnttab_file, &entry) == 0) {
6236
6237 /* ignore non-ZFS entries */
6238 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6239 continue;
6240
6241 /* ignore snapshots */
6242 if (strchr(entry.mnt_special, '@') != NULL)
6243 continue;
6244
6245 if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6246 ZFS_TYPE_FILESYSTEM)) == NULL) {
6247 ret = 1;
6248 continue;
6249 }
6250
6251 switch (op) {
6252 case OP_SHARE:
6253 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6254 nfs_mnt_prop,
6255 sizeof (nfs_mnt_prop),
6256 NULL, NULL, 0, B_FALSE) == 0);
6257 if (strcmp(nfs_mnt_prop, "off") != 0)
6258 break;
6259 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6260 nfs_mnt_prop,
6261 sizeof (nfs_mnt_prop),
6262 NULL, NULL, 0, B_FALSE) == 0);
6263 if (strcmp(nfs_mnt_prop, "off") == 0)
6264 continue;
6265 break;
6266 case OP_MOUNT:
6267 /* Ignore legacy mounts */
6268 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6269 nfs_mnt_prop,
6270 sizeof (nfs_mnt_prop),
6271 NULL, NULL, 0, B_FALSE) == 0);
6272 if (strcmp(nfs_mnt_prop, "legacy") == 0)
6273 continue;
6274 /* Ignore canmount=noauto mounts */
6275 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6276 ZFS_CANMOUNT_NOAUTO)
6277 continue;
6278 default:
6279 break;
6280 }
6281
6282 node = safe_malloc(sizeof (unshare_unmount_node_t));
6283 node->un_zhp = zhp;
6284 node->un_mountp = safe_strdup(entry.mnt_mountp);
6285
6286 uu_avl_node_init(node, &node->un_avlnode, pool);
6287
6288 if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6289 uu_avl_insert(tree, node, idx);
6290 } else {
6291 zfs_close(node->un_zhp);
6292 free(node->un_mountp);
6293 free(node);
6294 }
6295 }
6296
6297 /*
6298 * Walk the AVL tree in reverse, unmounting each filesystem and
6299 * removing it from the AVL tree in the process.
6300 */
6301 if ((walk = uu_avl_walk_start(tree,
6302 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6303 nomem();
6304
6305 while ((node = uu_avl_walk_next(walk)) != NULL) {
6306 uu_avl_remove(tree, node);
6307
6308 switch (op) {
6309 case OP_SHARE:
6310 if (zfs_unshareall_bypath(node->un_zhp,
6311 node->un_mountp) != 0)
6312 ret = 1;
6313 break;
6314
6315 case OP_MOUNT:
6316 if (zfs_unmount(node->un_zhp,
6317 node->un_mountp, flags) != 0)
6318 ret = 1;
6319 break;
6320 }
6321
6322 zfs_close(node->un_zhp);
6323 free(node->un_mountp);
6324 free(node);
6325 }
6326
6327 uu_avl_walk_end(walk);
6328 uu_avl_destroy(tree);
6329 uu_avl_pool_destroy(pool);
6330
6331 } else {
6332 if (argc != 1) {
6333 if (argc == 0)
6334 (void) fprintf(stderr,
6335 gettext("missing filesystem argument\n"));
6336 else
6337 (void) fprintf(stderr,
6338 gettext("too many arguments\n"));
6339 usage(B_FALSE);
6340 }
6341
6342 /*
6343 * We have an argument, but it may be a full path or a ZFS
6344 * filesystem. Pass full paths off to unmount_path() (shared by
6345 * manual_unmount), otherwise open the filesystem and pass to
6346 * zfs_unmount().
6347 */
6348 if (argv[0][0] == '/')
6349 return (unshare_unmount_path(op, argv[0],
6350 flags, B_FALSE));
6351
6352 if ((zhp = zfs_open(g_zfs, argv[0],
6353 ZFS_TYPE_FILESYSTEM)) == NULL)
6354 return (1);
6355
6356 verify(zfs_prop_get(zhp, op == OP_SHARE ?
6357 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
6358 nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
6359 NULL, 0, B_FALSE) == 0);
6360
6361 switch (op) {
6362 case OP_SHARE:
6363 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6364 nfs_mnt_prop,
6365 sizeof (nfs_mnt_prop),
6366 NULL, NULL, 0, B_FALSE) == 0);
6367 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6368 sharesmb, sizeof (sharesmb), NULL, NULL,
6369 0, B_FALSE) == 0);
6370
6371 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6372 strcmp(sharesmb, "off") == 0) {
6373 (void) fprintf(stderr, gettext("cannot "
6374 "unshare '%s': legacy share\n"),
6375 zfs_get_name(zhp));
6376 (void) fprintf(stderr, gettext("use "
6377 "unshare(1M) to unshare this "
6378 "filesystem\n"));
6379 ret = 1;
6380 } else if (!zfs_is_shared(zhp)) {
6381 (void) fprintf(stderr, gettext("cannot "
6382 "unshare '%s': not currently "
6383 "shared\n"), zfs_get_name(zhp));
6384 ret = 1;
6385 } else if (zfs_unshareall(zhp) != 0) {
6386 ret = 1;
6387 }
6388 break;
6389
6390 case OP_MOUNT:
6391 if (strcmp(nfs_mnt_prop, "legacy") == 0) {
6392 (void) fprintf(stderr, gettext("cannot "
6393 "unmount '%s': legacy "
6394 "mountpoint\n"), zfs_get_name(zhp));
6395 (void) fprintf(stderr, gettext("use "
6396 "umount(1M) to unmount this "
6397 "filesystem\n"));
6398 ret = 1;
6399 } else if (!zfs_is_mounted(zhp, NULL)) {
6400 (void) fprintf(stderr, gettext("cannot "
6401 "unmount '%s': not currently "
6402 "mounted\n"),
6403 zfs_get_name(zhp));
6404 ret = 1;
6405 } else if (zfs_unmountall(zhp, flags) != 0) {
6406 ret = 1;
6407 }
6408 break;
6409 }
6410
6411 zfs_close(zhp);
6412 }
6413
6414 return (ret);
6415 }
6416
6417 /*
6418 * zfs unmount -a
6419 * zfs unmount filesystem
6420 *
6421 * Unmount all filesystems, or a specific ZFS filesystem.
6422 */
6423 static int
6424 zfs_do_unmount(int argc, char **argv)
6425 {
6426 return (unshare_unmount(OP_MOUNT, argc, argv));
6427 }
6428
6429 /*
6430 * zfs unshare -a
6431 * zfs unshare filesystem
6432 *
6433 * Unshare all filesystems, or a specific ZFS filesystem.
6434 */
6435 static int
6436 zfs_do_unshare(int argc, char **argv)
6437 {
6438 return (unshare_unmount(OP_SHARE, argc, argv));
6439 }
6440
6441 /*
6442 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is
6443 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'.
6444 */
6445 static int
6446 manual_mount(int argc, char **argv)
6447 {
6448 zfs_handle_t *zhp;
6449 char mountpoint[ZFS_MAXPROPLEN];
6450 char mntopts[MNT_LINE_MAX] = { '\0' };
6451 int ret = 0;
6452 int c;
6453 int flags = 0;
6454 char *dataset, *path;
6455
6456 /* check options */
6457 while ((c = getopt(argc, argv, ":mo:O")) != -1) {
6458 switch (c) {
6459 case 'o':
6460 (void) strlcpy(mntopts, optarg, sizeof (mntopts));
6461 break;
6462 case 'O':
6463 flags |= MS_OVERLAY;
6464 break;
6465 case 'm':
6466 flags |= MS_NOMNTTAB;
6467 break;
6468 case ':':
6469 (void) fprintf(stderr, gettext("missing argument for "
6470 "'%c' option\n"), optopt);
6471 usage(B_FALSE);
6472 break;
6473 case '?':
6474 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6475 optopt);
6476 (void) fprintf(stderr, gettext("usage: mount [-o opts] "
6477 "<path>\n"));
6478 return (2);
6479 }
6480 }
6481
6482 argc -= optind;
6483 argv += optind;
6484
6485 /* check that we only have two arguments */
6486 if (argc != 2) {
6487 if (argc == 0)
6488 (void) fprintf(stderr, gettext("missing dataset "
6489 "argument\n"));
6490 else if (argc == 1)
6491 (void) fprintf(stderr,
6492 gettext("missing mountpoint argument\n"));
6493 else
6494 (void) fprintf(stderr, gettext("too many arguments\n"));
6495 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
6496 return (2);
6497 }
6498
6499 dataset = argv[0];
6500 path = argv[1];
6501
6502 /* try to open the dataset */
6503 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
6504 return (1);
6505
6506 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
6507 sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
6508
6509 /* check for legacy mountpoint and complain appropriately */
6510 ret = 0;
6511 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
6512 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS,
6513 NULL, 0, mntopts, sizeof (mntopts)) != 0) {
6514 (void) fprintf(stderr, gettext("mount failed: %s\n"),
6515 strerror(errno));
6516 ret = 1;
6517 }
6518 } else {
6519 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
6520 "mounted using 'mount -F zfs'\n"), dataset);
6521 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
6522 "instead.\n"), path);
6523 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' "
6524 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n"));
6525 (void) fprintf(stderr, gettext("See zfs(1M) for more "
6526 "information.\n"));
6527 ret = 1;
6528 }
6529
6530 return (ret);
6531 }
6532
6533 /*
6534 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow
6535 * unmounts of non-legacy filesystems, as this is the dominant administrative
6536 * interface.
6537 */
6538 static int
6539 manual_unmount(int argc, char **argv)
6540 {
6541 int flags = 0;
6542 int c;
6543
6544 /* check options */
6545 while ((c = getopt(argc, argv, "f")) != -1) {
6546 switch (c) {
6547 case 'f':
6548 flags = MS_FORCE;
6549 break;
6550 case '?':
6551 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6552 optopt);
6553 (void) fprintf(stderr, gettext("usage: unmount [-f] "
6554 "<path>\n"));
6555 return (2);
6556 }
6557 }
6558
6559 argc -= optind;
6560 argv += optind;
6561
6562 /* check arguments */
6563 if (argc != 1) {
6564 if (argc == 0)
6565 (void) fprintf(stderr, gettext("missing path "
6566 "argument\n"));
6567 else
6568 (void) fprintf(stderr, gettext("too many arguments\n"));
6569 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
6570 return (2);
6571 }
6572
6573 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
6574 }
6575
6576 static int
6577 find_command_idx(char *command, int *idx)
6578 {
6579 int i;
6580
6581 for (i = 0; i < NCOMMAND; i++) {
6582 if (command_table[i].name == NULL)
6583 continue;
6584
6585 if (strcmp(command, command_table[i].name) == 0) {
6586 *idx = i;
6587 return (0);
6588 }
6589 }
6590 return (1);
6591 }
6592
6593 static int
6594 zfs_do_diff(int argc, char **argv)
6595 {
6596 zfs_handle_t *zhp;
6597 int flags = 0;
6598 char *tosnap = NULL;
6599 char *fromsnap = NULL;
6600 char *atp, *copy;
6601 int err = 0;
6602 int c;
6603
6604 while ((c = getopt(argc, argv, "FHt")) != -1) {
6605 switch (c) {
6606 case 'F':
6607 flags |= ZFS_DIFF_CLASSIFY;
6608 break;
6609 case 'H':
6610 flags |= ZFS_DIFF_PARSEABLE;
6611 break;
6612 case 't':
6613 flags |= ZFS_DIFF_TIMESTAMP;
6614 break;
6615 default:
6616 (void) fprintf(stderr,
6617 gettext("invalid option '%c'\n"), optopt);
6618 usage(B_FALSE);
6619 }
6620 }
6621
6622 argc -= optind;
6623 argv += optind;
6624
6625 if (argc < 1) {
6626 (void) fprintf(stderr,
6627 gettext("must provide at least one snapshot name\n"));
6628 usage(B_FALSE);
6629 }
6630
6631 if (argc > 2) {
6632 (void) fprintf(stderr, gettext("too many arguments\n"));
6633 usage(B_FALSE);
6634 }
6635
6636 fromsnap = argv[0];
6637 tosnap = (argc == 2) ? argv[1] : NULL;
6638
6639 copy = NULL;
6640 if (*fromsnap != '@')
6641 copy = strdup(fromsnap);
6642 else if (tosnap)
6643 copy = strdup(tosnap);
6644 if (copy == NULL)
6645 usage(B_FALSE);
6646
6647 if (atp = strchr(copy, '@'))
6648 *atp = '\0';
6649
6650 if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL)
6651 return (1);
6652
6653 free(copy);
6654
6655 /*
6656 * Ignore SIGPIPE so that the library can give us
6657 * information on any failure
6658 */
6659 (void) sigignore(SIGPIPE);
6660
6661 err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
6662
6663 zfs_close(zhp);
6664
6665 return (err != 0);
6666 }
6667
6668 /*
6669 * zfs bookmark <fs@snap> <fs#bmark>
6670 *
6671 * Creates a bookmark with the given name from the given snapshot.
6672 */
6673 static int
6674 zfs_do_bookmark(int argc, char **argv)
6675 {
6676 char snapname[ZFS_MAXNAMELEN];
6677 zfs_handle_t *zhp;
6678 nvlist_t *nvl;
6679 int ret = 0;
6680 int c;
6681
6682 /* check options */
6683 while ((c = getopt(argc, argv, "")) != -1) {
6684 switch (c) {
6685 case '?':
6686 (void) fprintf(stderr,
6687 gettext("invalid option '%c'\n"), optopt);
6688 goto usage;
6689 }
6690 }
6691
6692 argc -= optind;
6693 argv += optind;
6694
6695 /* check number of arguments */
6696 if (argc < 1) {
6697 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
6698 goto usage;
6699 }
6700 if (argc < 2) {
6701 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
6702 goto usage;
6703 }
6704
6705 if (strchr(argv[1], '#') == NULL) {
6706 (void) fprintf(stderr,
6707 gettext("invalid bookmark name '%s' -- "
6708 "must contain a '#'\n"), argv[1]);
6709 goto usage;
6710 }
6711
6712 if (argv[0][0] == '@') {
6713 /*
6714 * Snapshot name begins with @.
6715 * Default to same fs as bookmark.
6716 */
6717 (void) strncpy(snapname, argv[1], sizeof (snapname));
6718 *strchr(snapname, '#') = '\0';
6719 (void) strlcat(snapname, argv[0], sizeof (snapname));
6720 } else {
6721 (void) strncpy(snapname, argv[0], sizeof (snapname));
6722 }
6723 zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
6724 if (zhp == NULL)
6725 goto usage;
6726 zfs_close(zhp);
6727
6728
6729 nvl = fnvlist_alloc();
6730 fnvlist_add_string(nvl, argv[1], snapname);
6731 ret = lzc_bookmark(nvl, NULL);
6732 fnvlist_free(nvl);
6733
6734 if (ret != 0) {
6735 const char *err_msg;
6736 char errbuf[1024];
6737
6738 (void) snprintf(errbuf, sizeof (errbuf),
6739 dgettext(TEXT_DOMAIN,
6740 "cannot create bookmark '%s'"), argv[1]);
6741
6742 switch (ret) {
6743 case EXDEV:
6744 err_msg = "bookmark is in a different pool";
6745 break;
6746 case EEXIST:
6747 err_msg = "bookmark exists";
6748 break;
6749 case EINVAL:
6750 err_msg = "invalid argument";
6751 break;
6752 case ENOTSUP:
6753 err_msg = "bookmark feature not enabled";
6754 break;
6755 case ENOSPC:
6756 err_msg = "out of space";
6757 break;
6758 default:
6759 err_msg = "unknown error";
6760 break;
6761 }
6762 (void) fprintf(stderr, "%s: %s\n", errbuf,
6763 dgettext(TEXT_DOMAIN, err_msg));
6764 }
6765
6766 return (ret != 0);
6767
6768 usage:
6769 usage(B_FALSE);
6770 return (-1);
6771 }
6772
6773 int
6774 main(int argc, char **argv)
6775 {
6776 int ret = 0;
6777 int i;
6778 char *progname;
6779 char *cmdname;
6780
6781 (void) setlocale(LC_ALL, "");
6782 (void) textdomain(TEXT_DOMAIN);
6783
6784 opterr = 0;
6785
6786 if ((g_zfs = libzfs_init()) == NULL) {
6787 (void) fprintf(stderr, gettext("internal error: failed to "
6788 "initialize ZFS library\n"));
6789 return (1);
6790 }
6791
6792 zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
6793
6794 libzfs_print_on_error(g_zfs, B_TRUE);
6795
6796 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
6797 (void) fprintf(stderr, gettext("internal error: unable to "
6798 "open %s\n"), MNTTAB);
6799 return (1);
6800 }
6801
6802 /*
6803 * This command also doubles as the /etc/fs mount and unmount program.
6804 * Determine if we should take this behavior based on argv[0].
6805 */
6806 progname = basename(argv[0]);
6807 if (strcmp(progname, "mount") == 0) {
6808 ret = manual_mount(argc, argv);
6809 } else if (strcmp(progname, "umount") == 0) {
6810 ret = manual_unmount(argc, argv);
6811 } else {
6812 /*
6813 * Make sure the user has specified some command.
6814 */
6815 if (argc < 2) {
6816 (void) fprintf(stderr, gettext("missing command\n"));
6817 usage(B_FALSE);
6818 }
6819
6820 cmdname = argv[1];
6821
6822 /*
6823 * The 'umount' command is an alias for 'unmount'
6824 */
6825 if (strcmp(cmdname, "umount") == 0)
6826 cmdname = "unmount";
6827
6828 /*
6829 * The 'recv' command is an alias for 'receive'
6830 */
6831 if (strcmp(cmdname, "recv") == 0)
6832 cmdname = "receive";
6833
6834 /*
6835 * The 'snap' command is an alias for 'snapshot'
6836 */
6837 if (strcmp(cmdname, "snap") == 0)
6838 cmdname = "snapshot";
6839
6840 /*
6841 * Special case '-?'
6842 */
6843 if (strcmp(cmdname, "-?") == 0)
6844 usage(B_TRUE);
6845
6846 /*
6847 * Run the appropriate command.
6848 */
6849 libzfs_mnttab_cache(g_zfs, B_TRUE);
6850 if (find_command_idx(cmdname, &i) == 0) {
6851 current_command = &command_table[i];
6852 ret = command_table[i].func(argc - 1, argv + 1);
6853 } else if (strchr(cmdname, '=') != NULL) {
6854 verify(find_command_idx("set", &i) == 0);
6855 current_command = &command_table[i];
6856 ret = command_table[i].func(argc, argv);
6857 } else {
6858 (void) fprintf(stderr, gettext("unrecognized "
6859 "command '%s'\n"), cmdname);
6860 usage(B_FALSE);
6861 }
6862 libzfs_mnttab_cache(g_zfs, B_FALSE);
6863 }
6864
6865 (void) fclose(mnttab_file);
6866
6867 if (ret == 0 && log_history)
6868 (void) zpool_log_history(g_zfs, history_str);
6869
6870 libzfs_fini(g_zfs);
6871
6872 /*
6873 * The 'ZFS_ABORT' environment variable causes us to dump core on exit
6874 * for the purposes of running ::findleaks.
6875 */
6876 if (getenv("ZFS_ABORT") != NULL) {
6877 (void) printf("dumping core by request\n");
6878 abort();
6879 }
6880
6881 return (ret);
6882 }
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