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, 2015 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 * Copyright 2015 RackTop Systems.
30 */
31
32 #include <assert.h>
33 #include <ctype.h>
34 #include <errno.h>
35 #include <libgen.h>
36 #include <libintl.h>
37 #include <libuutil.h>
38 #include <libnvpair.h>
39 #include <locale.h>
40 #include <stddef.h>
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <strings.h>
44 #include <unistd.h>
45 #include <fcntl.h>
46 #include <zone.h>
47 #include <grp.h>
48 #include <pwd.h>
49 #include <signal.h>
50 #include <sys/list.h>
51 #include <sys/mkdev.h>
52 #include <sys/mntent.h>
53 #include <sys/mnttab.h>
54 #include <sys/mount.h>
55 #include <sys/stat.h>
56 #include <sys/fs/zfs.h>
57 #include <sys/types.h>
58 #include <time.h>
59
60 #include <libzfs.h>
61 #include <libzfs_core.h>
62 #include <zfs_prop.h>
63 #include <zfs_deleg.h>
64 #include <libuutil.h>
65 #include <aclutils.h>
66 #include <directory.h>
67 #include <idmap.h>
68
69 #include "zfs_iter.h"
70 #include "zfs_util.h"
71 #include "zfs_comutil.h"
72
73 libzfs_handle_t *g_zfs;
74
75 static FILE *mnttab_file;
76 static char history_str[HIS_MAX_RECORD_LEN];
77 static boolean_t log_history = B_TRUE;
78
79 static int zfs_do_clone(int argc, char **argv);
80 static int zfs_do_create(int argc, char **argv);
81 static int zfs_do_destroy(int argc, char **argv);
82 static int zfs_do_get(int argc, char **argv);
83 static int zfs_do_inherit(int argc, char **argv);
84 static int zfs_do_list(int argc, char **argv);
85 static int zfs_do_mount(int argc, char **argv);
86 static int zfs_do_rename(int argc, char **argv);
87 static int zfs_do_rollback(int argc, char **argv);
88 static int zfs_do_set(int argc, char **argv);
89 static int zfs_do_upgrade(int argc, char **argv);
90 static int zfs_do_snapshot(int argc, char **argv);
91 static int zfs_do_unmount(int argc, char **argv);
92 static int zfs_do_share(int argc, char **argv);
93 static int zfs_do_unshare(int argc, char **argv);
94 static int zfs_do_send(int argc, char **argv);
95 static int zfs_do_receive(int argc, char **argv);
96 static int zfs_do_promote(int argc, char **argv);
97 static int zfs_do_userspace(int argc, char **argv);
98 static int zfs_do_allow(int argc, char **argv);
99 static int zfs_do_unallow(int argc, char **argv);
100 static int zfs_do_hold(int argc, char **argv);
101 static int zfs_do_holds(int argc, char **argv);
102 static int zfs_do_release(int argc, char **argv);
103 static int zfs_do_diff(int argc, char **argv);
104 static int zfs_do_bookmark(int argc, char **argv);
105
106 /*
107 * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
108 */
109
110 #ifdef DEBUG
111 const char *
112 _umem_debug_init(void)
113 {
114 return ("default,verbose"); /* $UMEM_DEBUG setting */
115 }
116
117 const char *
118 _umem_logging_init(void)
119 {
120 return ("fail,contents"); /* $UMEM_LOGGING setting */
121 }
122 #endif
123
124 typedef enum {
125 HELP_CLONE,
126 HELP_CREATE,
127 HELP_DESTROY,
128 HELP_GET,
129 HELP_INHERIT,
130 HELP_UPGRADE,
131 HELP_LIST,
132 HELP_MOUNT,
133 HELP_PROMOTE,
134 HELP_RECEIVE,
135 HELP_RENAME,
136 HELP_ROLLBACK,
137 HELP_SEND,
138 HELP_SET,
139 HELP_SHARE,
140 HELP_SNAPSHOT,
141 HELP_UNMOUNT,
142 HELP_UNSHARE,
143 HELP_ALLOW,
144 HELP_UNALLOW,
145 HELP_USERSPACE,
146 HELP_GROUPSPACE,
147 HELP_HOLD,
148 HELP_HOLDS,
149 HELP_RELEASE,
150 HELP_DIFF,
151 HELP_BOOKMARK,
152 } zfs_help_t;
153
154 typedef struct zfs_command {
155 const char *name;
156 int (*func)(int argc, char **argv);
157 zfs_help_t usage;
158 } zfs_command_t;
159
160 /*
161 * Master command table. Each ZFS command has a name, associated function, and
162 * usage message. The usage messages need to be internationalized, so we have
163 * to have a function to return the usage message based on a command index.
164 *
165 * These commands are organized according to how they are displayed in the usage
166 * message. An empty command (one with a NULL name) indicates an empty line in
167 * the generic usage message.
168 */
169 static zfs_command_t command_table[] = {
170 { "create", zfs_do_create, HELP_CREATE },
171 { "destroy", zfs_do_destroy, HELP_DESTROY },
172 { NULL },
173 { "snapshot", zfs_do_snapshot, HELP_SNAPSHOT },
174 { "rollback", zfs_do_rollback, HELP_ROLLBACK },
175 { "clone", zfs_do_clone, HELP_CLONE },
176 { "promote", zfs_do_promote, HELP_PROMOTE },
177 { "rename", zfs_do_rename, HELP_RENAME },
178 { "bookmark", zfs_do_bookmark, HELP_BOOKMARK },
179 { NULL },
180 { "list", zfs_do_list, HELP_LIST },
181 { NULL },
182 { "set", zfs_do_set, HELP_SET },
183 { "get", zfs_do_get, HELP_GET },
184 { "inherit", zfs_do_inherit, HELP_INHERIT },
185 { "upgrade", zfs_do_upgrade, HELP_UPGRADE },
186 { "userspace", zfs_do_userspace, HELP_USERSPACE },
187 { "groupspace", zfs_do_userspace, HELP_GROUPSPACE },
188 { NULL },
189 { "mount", zfs_do_mount, HELP_MOUNT },
190 { "unmount", zfs_do_unmount, HELP_UNMOUNT },
191 { "share", zfs_do_share, HELP_SHARE },
192 { "unshare", zfs_do_unshare, HELP_UNSHARE },
193 { NULL },
194 { "send", zfs_do_send, HELP_SEND },
195 { "receive", zfs_do_receive, HELP_RECEIVE },
196 { NULL },
197 { "allow", zfs_do_allow, HELP_ALLOW },
198 { NULL },
199 { "unallow", zfs_do_unallow, HELP_UNALLOW },
200 { NULL },
201 { "hold", zfs_do_hold, HELP_HOLD },
202 { "holds", zfs_do_holds, HELP_HOLDS },
203 { "release", zfs_do_release, HELP_RELEASE },
204 { "diff", zfs_do_diff, HELP_DIFF },
205 };
206
207 #define NCOMMAND (sizeof (command_table) / sizeof (command_table[0]))
208
209 zfs_command_t *current_command;
210
211 static const char *
212 get_usage(zfs_help_t idx)
213 {
214 switch (idx) {
215 case HELP_CLONE:
216 return (gettext("\tclone [-p] [-o property=value] ... "
217 "<snapshot> <filesystem|volume>\n"));
218 case HELP_CREATE:
219 return (gettext("\tcreate [-p] [-o property=value] ... "
220 "<filesystem>\n"
221 "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
222 "-V <size> <volume>\n"));
223 case HELP_DESTROY:
224 return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
225 "\tdestroy [-dnpRrv] "
226 "<filesystem|volume>@<snap>[%<snap>][,...]\n"
227 "\tdestroy <filesystem|volume>#<bookmark>\n"));
228 case HELP_GET:
229 return (gettext("\tget [-rHp] [-d max] "
230 "[-o \"all\" | field[,...]]\n"
231 "\t [-t type[,...]] [-s source[,...]]\n"
232 "\t <\"all\" | property[,...]> "
233 "[filesystem|volume|snapshot] ...\n"));
234 case HELP_INHERIT:
235 return (gettext("\tinherit [-rS] <property> "
236 "<filesystem|volume|snapshot> ...\n"));
237 case HELP_UPGRADE:
238 return (gettext("\tupgrade [-v]\n"
239 "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
240 case HELP_LIST:
241 return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
242 "[-s property]...\n\t [-S property]... [-t type[,...]] "
243 "[filesystem|volume|snapshot] ...\n"));
244 case HELP_MOUNT:
245 return (gettext("\tmount\n"
246 "\tmount [-vO] [-o opts] <-a | filesystem>\n"));
247 case HELP_PROMOTE:
248 return (gettext("\tpromote <clone-filesystem>\n"));
249 case HELP_RECEIVE:
250 return (gettext("\treceive [-vnsFu] <filesystem|volume|"
251 "snapshot>\n"
252 "\treceive [-vnsFu] [-o origin=<snapshot>] [-d | -e] "
253 "<filesystem>\n"
254 "\treceive -A <filesystem|volume>\n"));
255 case HELP_RENAME:
256 return (gettext("\trename [-f] <filesystem|volume|snapshot> "
257 "<filesystem|volume|snapshot>\n"
258 "\trename [-f] -p <filesystem|volume> <filesystem|volume>\n"
259 "\trename -r <snapshot> <snapshot>\n"));
260 case HELP_ROLLBACK:
261 return (gettext("\trollback [-rRf] <snapshot>\n"));
262 case HELP_SEND:
263 return (gettext("\tsend [-DnPpRvLeF] [-[iI] snapshot] "
264 "<snapshot>\n"
265 "\tsend [-LeF] [-i snapshot|bookmark] "
266 "<filesystem|volume|snapshot>\n"
267 "\tsend [-nvPe] -t <receive_resume_token>\n"));
268 case HELP_SET:
269 return (gettext("\tset <property=value> ... "
270 "<filesystem|volume|snapshot> ...\n"));
271 case HELP_SHARE:
272 return (gettext("\tshare <-a | filesystem>\n"));
273 case HELP_SNAPSHOT:
274 return (gettext("\tsnapshot [-r] [-o property=value] ... "
275 "<filesystem|volume>@<snap> ...\n"));
276 case HELP_UNMOUNT:
277 return (gettext("\tunmount [-f] "
278 "<-a | filesystem|mountpoint>\n"));
279 case HELP_UNSHARE:
280 return (gettext("\tunshare "
281 "<-a | filesystem|mountpoint>\n"));
282 case HELP_ALLOW:
283 return (gettext("\tallow <filesystem|volume>\n"
284 "\tallow [-ldug] "
285 "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
286 "\t <filesystem|volume>\n"
287 "\tallow [-ld] -e <perm|@setname>[,...] "
288 "<filesystem|volume>\n"
289 "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
290 "\tallow -s @setname <perm|@setname>[,...] "
291 "<filesystem|volume>\n"));
292 case HELP_UNALLOW:
293 return (gettext("\tunallow [-rldug] "
294 "<\"everyone\"|user|group>[,...]\n"
295 "\t [<perm|@setname>[,...]] <filesystem|volume>\n"
296 "\tunallow [-rld] -e [<perm|@setname>[,...]] "
297 "<filesystem|volume>\n"
298 "\tunallow [-r] -c [<perm|@setname>[,...]] "
299 "<filesystem|volume>\n"
300 "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
301 "<filesystem|volume>\n"));
302 case HELP_USERSPACE:
303 return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
304 "[-s field] ...\n"
305 "\t [-S field] ... [-t type[,...]] "
306 "<filesystem|snapshot>\n"));
307 case HELP_GROUPSPACE:
308 return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
309 "[-s field] ...\n"
310 "\t [-S field] ... [-t type[,...]] "
311 "<filesystem|snapshot>\n"));
312 case HELP_HOLD:
313 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
314 case HELP_HOLDS:
315 return (gettext("\tholds [-r] <snapshot> ...\n"));
316 case HELP_RELEASE:
317 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
318 case HELP_DIFF:
319 return (gettext("\tdiff [-FHt] <snapshot> "
320 "[snapshot|filesystem]\n"));
321 case HELP_BOOKMARK:
322 return (gettext("\tbookmark <snapshot> <bookmark>\n"));
323 }
324
325 abort();
326 /* NOTREACHED */
327 }
328
329 void
330 nomem(void)
331 {
332 (void) fprintf(stderr, gettext("internal error: out of memory\n"));
333 exit(1);
334 }
335
336 /*
337 * Utility function to guarantee malloc() success.
338 */
339
340 void *
341 safe_malloc(size_t size)
342 {
343 void *data;
344
345 if ((data = calloc(1, size)) == NULL)
346 nomem();
347
348 return (data);
349 }
350
351 static char *
352 safe_strdup(char *str)
353 {
354 char *dupstr = strdup(str);
355
356 if (dupstr == NULL)
357 nomem();
358
359 return (dupstr);
360 }
361
362 /*
363 * Callback routine that will print out information for each of
364 * the properties.
365 */
366 static int
367 usage_prop_cb(int prop, void *cb)
368 {
369 FILE *fp = cb;
370
371 (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
372
373 if (zfs_prop_readonly(prop))
374 (void) fprintf(fp, " NO ");
375 else
376 (void) fprintf(fp, "YES ");
377
378 if (zfs_prop_inheritable(prop))
379 (void) fprintf(fp, " YES ");
380 else
381 (void) fprintf(fp, " NO ");
382
383 if (zfs_prop_values(prop) == NULL)
384 (void) fprintf(fp, "-\n");
385 else
386 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
387
388 return (ZPROP_CONT);
389 }
390
391 /*
392 * Display usage message. If we're inside a command, display only the usage for
393 * that command. Otherwise, iterate over the entire command table and display
394 * a complete usage message.
395 */
396 static void
397 usage(boolean_t requested)
398 {
399 int i;
400 boolean_t show_properties = B_FALSE;
401 FILE *fp = requested ? stdout : stderr;
402
403 if (current_command == NULL) {
404
405 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
406 (void) fprintf(fp,
407 gettext("where 'command' is one of the following:\n\n"));
408
409 for (i = 0; i < NCOMMAND; i++) {
410 if (command_table[i].name == NULL)
411 (void) fprintf(fp, "\n");
412 else
413 (void) fprintf(fp, "%s",
414 get_usage(command_table[i].usage));
415 }
416
417 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
418 "pool/[dataset/]*dataset[@name]\n"));
419 } else {
420 (void) fprintf(fp, gettext("usage:\n"));
421 (void) fprintf(fp, "%s", get_usage(current_command->usage));
422 }
423
424 if (current_command != NULL &&
425 (strcmp(current_command->name, "set") == 0 ||
426 strcmp(current_command->name, "get") == 0 ||
427 strcmp(current_command->name, "inherit") == 0 ||
428 strcmp(current_command->name, "list") == 0))
429 show_properties = B_TRUE;
430
431 if (show_properties) {
432 (void) fprintf(fp,
433 gettext("\nThe following properties are supported:\n"));
434
435 (void) fprintf(fp, "\n\t%-14s %s %s %s\n\n",
436 "PROPERTY", "EDIT", "INHERIT", "VALUES");
437
438 /* Iterate over all properties */
439 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
440 ZFS_TYPE_DATASET);
441
442 (void) fprintf(fp, "\t%-15s ", "userused@...");
443 (void) fprintf(fp, " NO NO <size>\n");
444 (void) fprintf(fp, "\t%-15s ", "groupused@...");
445 (void) fprintf(fp, " NO NO <size>\n");
446 (void) fprintf(fp, "\t%-15s ", "userquota@...");
447 (void) fprintf(fp, "YES NO <size> | none\n");
448 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
449 (void) fprintf(fp, "YES NO <size> | none\n");
450 (void) fprintf(fp, "\t%-15s ", "written@<snap>");
451 (void) fprintf(fp, " NO NO <size>\n");
452
453 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
454 "with standard units such as K, M, G, etc.\n"));
455 (void) fprintf(fp, gettext("\nUser-defined properties can "
456 "be specified by using a name containing a colon (:).\n"));
457 (void) fprintf(fp, gettext("\nThe {user|group}{used|quota}@ "
458 "properties must be appended with\n"
459 "a user or group specifier of one of these forms:\n"
460 " POSIX name (eg: \"matt\")\n"
461 " POSIX id (eg: \"126829\")\n"
462 " SMB name@domain (eg: \"matt@sun\")\n"
463 " SMB SID (eg: \"S-1-234-567-89\")\n"));
464 } else {
465 (void) fprintf(fp,
466 gettext("\nFor the property list, run: %s\n"),
467 "zfs set|get");
468 (void) fprintf(fp,
469 gettext("\nFor the delegated permission list, run: %s\n"),
470 "zfs allow|unallow");
471 }
472
473 /*
474 * See comments at end of main().
475 */
476 if (getenv("ZFS_ABORT") != NULL) {
477 (void) printf("dumping core by request\n");
478 abort();
479 }
480
481 exit(requested ? 0 : 2);
482 }
483
484 /*
485 * Take a property=value argument string and add it to the given nvlist.
486 * Modifies the argument inplace.
487 */
488 static int
489 parseprop(nvlist_t *props, char *propname)
490 {
491 char *propval, *strval;
492
493 if ((propval = strchr(propname, '=')) == NULL) {
494 (void) fprintf(stderr, gettext("missing "
495 "'=' for property=value argument\n"));
496 return (-1);
497 }
498 *propval = '\0';
499 propval++;
500 if (nvlist_lookup_string(props, propname, &strval) == 0) {
501 (void) fprintf(stderr, gettext("property '%s' "
502 "specified multiple times\n"), propname);
503 return (-1);
504 }
505 if (nvlist_add_string(props, propname, propval) != 0)
506 nomem();
507 return (0);
508 }
509
510 static int
511 parse_depth(char *opt, int *flags)
512 {
513 char *tmp;
514 int depth;
515
516 depth = (int)strtol(opt, &tmp, 0);
517 if (*tmp) {
518 (void) fprintf(stderr,
519 gettext("%s is not an integer\n"), optarg);
520 usage(B_FALSE);
521 }
522 if (depth < 0) {
523 (void) fprintf(stderr,
524 gettext("Depth can not be negative.\n"));
525 usage(B_FALSE);
526 }
527 *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
528 return (depth);
529 }
530
531 #define PROGRESS_DELAY 2 /* seconds */
532
533 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";
534 static time_t pt_begin;
535 static char *pt_header = NULL;
536 static boolean_t pt_shown;
537
538 static void
539 start_progress_timer(void)
540 {
541 pt_begin = time(NULL) + PROGRESS_DELAY;
542 pt_shown = B_FALSE;
543 }
544
545 static void
546 set_progress_header(char *header)
547 {
548 assert(pt_header == NULL);
549 pt_header = safe_strdup(header);
550 if (pt_shown) {
551 (void) printf("%s: ", header);
552 (void) fflush(stdout);
553 }
554 }
555
556 static void
557 update_progress(char *update)
558 {
559 if (!pt_shown && time(NULL) > pt_begin) {
560 int len = strlen(update);
561
562 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
563 pt_reverse);
564 (void) fflush(stdout);
565 pt_shown = B_TRUE;
566 } else if (pt_shown) {
567 int len = strlen(update);
568
569 (void) printf("%s%*.*s", update, len, len, pt_reverse);
570 (void) fflush(stdout);
571 }
572 }
573
574 static void
575 finish_progress(char *done)
576 {
577 if (pt_shown) {
578 (void) printf("%s\n", done);
579 (void) fflush(stdout);
580 }
581 free(pt_header);
582 pt_header = NULL;
583 }
584
585 /*
586 * Check if the dataset is mountable and should be automatically mounted.
587 */
588 static boolean_t
589 should_auto_mount(zfs_handle_t *zhp)
590 {
591 if (!zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, zfs_get_type(zhp)))
592 return (B_FALSE);
593 return (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_ON);
594 }
595
596 /*
597 * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
598 *
599 * Given an existing dataset, create a writable copy whose initial contents
600 * are the same as the source. The newly created dataset maintains a
601 * dependency on the original; the original cannot be destroyed so long as
602 * the clone exists.
603 *
604 * The '-p' flag creates all the non-existing ancestors of the target first.
605 */
606 static int
607 zfs_do_clone(int argc, char **argv)
608 {
609 zfs_handle_t *zhp = NULL;
610 boolean_t parents = B_FALSE;
611 nvlist_t *props;
612 int ret = 0;
613 int c;
614
615 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
616 nomem();
617
618 /* check options */
619 while ((c = getopt(argc, argv, "o:p")) != -1) {
620 switch (c) {
621 case 'o':
622 if (parseprop(props, optarg) != 0)
623 return (1);
624 break;
625 case 'p':
626 parents = B_TRUE;
627 break;
628 case '?':
629 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
630 optopt);
631 goto usage;
632 }
633 }
634
635 argc -= optind;
636 argv += optind;
637
638 /* check number of arguments */
639 if (argc < 1) {
640 (void) fprintf(stderr, gettext("missing source dataset "
641 "argument\n"));
642 goto usage;
643 }
644 if (argc < 2) {
645 (void) fprintf(stderr, gettext("missing target dataset "
646 "argument\n"));
647 goto usage;
648 }
649 if (argc > 2) {
650 (void) fprintf(stderr, gettext("too many arguments\n"));
651 goto usage;
652 }
653
654 /* open the source dataset */
655 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
656 return (1);
657
658 if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
659 ZFS_TYPE_VOLUME)) {
660 /*
661 * Now create the ancestors of the target dataset. If the
662 * target already exists and '-p' option was used we should not
663 * complain.
664 */
665 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
666 ZFS_TYPE_VOLUME))
667 return (0);
668 if (zfs_create_ancestors(g_zfs, argv[1]) != 0)
669 return (1);
670 }
671
672 /* pass to libzfs */
673 ret = zfs_clone(zhp, argv[1], props);
674
675 /* create the mountpoint if necessary */
676 if (ret == 0) {
677 zfs_handle_t *clone;
678
679 clone = zfs_open(g_zfs, argv[1], ZFS_TYPE_DATASET);
680 if (clone != NULL) {
681 /*
682 * If the user doesn't want the dataset
683 * automatically mounted, then skip the mount/share
684 * step.
685 */
686 if (should_auto_mount(clone)) {
687 if ((ret = zfs_mount(clone, NULL, 0)) != 0) {
688 (void) fprintf(stderr, gettext("clone "
689 "successfully created, "
690 "but not mounted\n"));
691 } else if ((ret = zfs_share(clone)) != 0) {
692 (void) fprintf(stderr, gettext("clone "
693 "successfully created, "
694 "but not shared\n"));
695 }
696 }
697 zfs_close(clone);
698 }
699 }
700
701 zfs_close(zhp);
702 nvlist_free(props);
703
704 return (!!ret);
705
706 usage:
707 if (zhp)
708 zfs_close(zhp);
709 nvlist_free(props);
710 usage(B_FALSE);
711 return (-1);
712 }
713
714 /*
715 * zfs create [-p] [-o prop=value] ... fs
716 * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
717 *
718 * Create a new dataset. This command can be used to create filesystems
719 * and volumes. Snapshot creation is handled by 'zfs snapshot'.
720 * For volumes, the user must specify a size to be used.
721 *
722 * The '-s' flag applies only to volumes, and indicates that we should not try
723 * to set the reservation for this volume. By default we set a reservation
724 * equal to the size for any volume. For pools with SPA_VERSION >=
725 * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
726 *
727 * The '-p' flag creates all the non-existing ancestors of the target first.
728 */
729 static int
730 zfs_do_create(int argc, char **argv)
731 {
732 zfs_type_t type = ZFS_TYPE_FILESYSTEM;
733 zfs_handle_t *zhp = NULL;
734 uint64_t volsize;
735 int c;
736 boolean_t noreserve = B_FALSE;
737 boolean_t bflag = B_FALSE;
738 boolean_t parents = B_FALSE;
739 int ret = 1;
740 nvlist_t *props;
741 uint64_t intval;
742
743 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
744 nomem();
745
746 /* check options */
747 while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) {
748 switch (c) {
749 case 'V':
750 type = ZFS_TYPE_VOLUME;
751 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
752 (void) fprintf(stderr, gettext("bad volume "
753 "size '%s': %s\n"), optarg,
754 libzfs_error_description(g_zfs));
755 goto error;
756 }
757
758 if (nvlist_add_uint64(props,
759 zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
760 nomem();
761 volsize = intval;
762 break;
763 case 'p':
764 parents = B_TRUE;
765 break;
766 case 'b':
767 bflag = B_TRUE;
768 if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
769 (void) fprintf(stderr, gettext("bad volume "
770 "block size '%s': %s\n"), optarg,
771 libzfs_error_description(g_zfs));
772 goto error;
773 }
774
775 if (nvlist_add_uint64(props,
776 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
777 intval) != 0)
778 nomem();
779 break;
780 case 'o':
781 if (parseprop(props, optarg) != 0)
782 goto error;
783 break;
784 case 's':
785 noreserve = B_TRUE;
786 break;
787 case ':':
788 (void) fprintf(stderr, gettext("missing size "
789 "argument\n"));
790 goto badusage;
791 case '?':
792 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
793 optopt);
794 goto badusage;
795 }
796 }
797
798 if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
799 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
800 "used when creating a volume\n"));
801 goto badusage;
802 }
803
804 argc -= optind;
805 argv += optind;
806
807 /* check number of arguments */
808 if (argc == 0) {
809 (void) fprintf(stderr, gettext("missing %s argument\n"),
810 zfs_type_to_name(type));
811 goto badusage;
812 }
813 if (argc > 1) {
814 (void) fprintf(stderr, gettext("too many arguments\n"));
815 goto badusage;
816 }
817
818 if (type == ZFS_TYPE_VOLUME && !noreserve) {
819 zpool_handle_t *zpool_handle;
820 nvlist_t *real_props;
821 uint64_t spa_version;
822 char *p;
823 zfs_prop_t resv_prop;
824 char *strval;
825 char msg[1024];
826
827 if (p = strchr(argv[0], '/'))
828 *p = '\0';
829 zpool_handle = zpool_open(g_zfs, argv[0]);
830 if (p != NULL)
831 *p = '/';
832 if (zpool_handle == NULL)
833 goto error;
834 spa_version = zpool_get_prop_int(zpool_handle,
835 ZPOOL_PROP_VERSION, NULL);
836 if (spa_version >= SPA_VERSION_REFRESERVATION)
837 resv_prop = ZFS_PROP_REFRESERVATION;
838 else
839 resv_prop = ZFS_PROP_RESERVATION;
840
841 (void) snprintf(msg, sizeof (msg),
842 gettext("cannot create '%s'"), argv[0]);
843 if (props && (real_props = zfs_valid_proplist(g_zfs, type,
844 props, 0, NULL, zpool_handle, msg)) == NULL) {
845 zpool_close(zpool_handle);
846 goto error;
847 }
848 zpool_close(zpool_handle);
849
850 volsize = zvol_volsize_to_reservation(volsize, real_props);
851 nvlist_free(real_props);
852
853 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
854 &strval) != 0) {
855 if (nvlist_add_uint64(props,
856 zfs_prop_to_name(resv_prop), volsize) != 0) {
857 nvlist_free(props);
858 nomem();
859 }
860 }
861 }
862
863 if (parents && zfs_name_valid(argv[0], type)) {
864 /*
865 * Now create the ancestors of target dataset. If the target
866 * already exists and '-p' option was used we should not
867 * complain.
868 */
869 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
870 ret = 0;
871 goto error;
872 }
873 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
874 goto error;
875 }
876
877 /* pass to libzfs */
878 if (zfs_create(g_zfs, argv[0], type, props) != 0)
879 goto error;
880
881 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
882 goto error;
883
884 ret = 0;
885
886 /*
887 * Mount and/or share the new filesystem as appropriate. We provide a
888 * verbose error message to let the user know that their filesystem was
889 * in fact created, even if we failed to mount or share it.
890 * If the user doesn't want the dataset automatically mounted,
891 * then skip the mount/share step altogether.
892 */
893 if (should_auto_mount(zhp)) {
894 if (zfs_mount(zhp, NULL, 0) != 0) {
895 (void) fprintf(stderr, gettext("filesystem "
896 "successfully created, but not mounted\n"));
897 ret = 1;
898 } else if (zfs_share(zhp) != 0) {
899 (void) fprintf(stderr, gettext("filesystem "
900 "successfully created, but not shared\n"));
901 ret = 1;
902 }
903 }
904
905 error:
906 if (zhp)
907 zfs_close(zhp);
908 nvlist_free(props);
909 return (ret);
910 badusage:
911 nvlist_free(props);
912 usage(B_FALSE);
913 return (2);
914 }
915
916 /*
917 * zfs destroy [-rRf] <fs, vol>
918 * zfs destroy [-rRd] <snap>
919 *
920 * -r Recursively destroy all children
921 * -R Recursively destroy all dependents, including clones
922 * -f Force unmounting of any dependents
923 * -d If we can't destroy now, mark for deferred destruction
924 *
925 * Destroys the given dataset. By default, it will unmount any filesystems,
926 * and refuse to destroy a dataset that has any dependents. A dependent can
927 * either be a child, or a clone of a child.
928 */
929 typedef struct destroy_cbdata {
930 boolean_t cb_first;
931 boolean_t cb_force;
932 boolean_t cb_recurse;
933 boolean_t cb_error;
934 boolean_t cb_doclones;
935 zfs_handle_t *cb_target;
936 boolean_t cb_defer_destroy;
937 boolean_t cb_verbose;
938 boolean_t cb_parsable;
939 boolean_t cb_dryrun;
940 nvlist_t *cb_nvl;
941 nvlist_t *cb_batchedsnaps;
942
943 /* first snap in contiguous run */
944 char *cb_firstsnap;
945 /* previous snap in contiguous run */
946 char *cb_prevsnap;
947 int64_t cb_snapused;
948 char *cb_snapspec;
949 char *cb_bookmark;
950 } destroy_cbdata_t;
951
952 /*
953 * Check for any dependents based on the '-r' or '-R' flags.
954 */
955 static int
956 destroy_check_dependent(zfs_handle_t *zhp, void *data)
957 {
958 destroy_cbdata_t *cbp = data;
959 const char *tname = zfs_get_name(cbp->cb_target);
960 const char *name = zfs_get_name(zhp);
961
962 if (strncmp(tname, name, strlen(tname)) == 0 &&
963 (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
964 /*
965 * This is a direct descendant, not a clone somewhere else in
966 * the hierarchy.
967 */
968 if (cbp->cb_recurse)
969 goto out;
970
971 if (cbp->cb_first) {
972 (void) fprintf(stderr, gettext("cannot destroy '%s': "
973 "%s has children\n"),
974 zfs_get_name(cbp->cb_target),
975 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
976 (void) fprintf(stderr, gettext("use '-r' to destroy "
977 "the following datasets:\n"));
978 cbp->cb_first = B_FALSE;
979 cbp->cb_error = B_TRUE;
980 }
981
982 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
983 } else {
984 /*
985 * This is a clone. We only want to report this if the '-r'
986 * wasn't specified, or the target is a snapshot.
987 */
988 if (!cbp->cb_recurse &&
989 zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
990 goto out;
991
992 if (cbp->cb_first) {
993 (void) fprintf(stderr, gettext("cannot destroy '%s': "
994 "%s has dependent clones\n"),
995 zfs_get_name(cbp->cb_target),
996 zfs_type_to_name(zfs_get_type(cbp->cb_target)));
997 (void) fprintf(stderr, gettext("use '-R' to destroy "
998 "the following datasets:\n"));
999 cbp->cb_first = B_FALSE;
1000 cbp->cb_error = B_TRUE;
1001 cbp->cb_dryrun = B_TRUE;
1002 }
1003
1004 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1005 }
1006
1007 out:
1008 zfs_close(zhp);
1009 return (0);
1010 }
1011
1012 static int
1013 destroy_callback(zfs_handle_t *zhp, void *data)
1014 {
1015 destroy_cbdata_t *cb = data;
1016 const char *name = zfs_get_name(zhp);
1017
1018 if (cb->cb_verbose) {
1019 if (cb->cb_parsable) {
1020 (void) printf("destroy\t%s\n", name);
1021 } else if (cb->cb_dryrun) {
1022 (void) printf(gettext("would destroy %s\n"),
1023 name);
1024 } else {
1025 (void) printf(gettext("will destroy %s\n"),
1026 name);
1027 }
1028 }
1029
1030 /*
1031 * Ignore pools (which we've already flagged as an error before getting
1032 * here).
1033 */
1034 if (strchr(zfs_get_name(zhp), '/') == NULL &&
1035 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1036 zfs_close(zhp);
1037 return (0);
1038 }
1039 if (cb->cb_dryrun) {
1040 zfs_close(zhp);
1041 return (0);
1042 }
1043
1044 /*
1045 * We batch up all contiguous snapshots (even of different
1046 * filesystems) and destroy them with one ioctl. We can't
1047 * simply do all snap deletions and then all fs deletions,
1048 * because we must delete a clone before its origin.
1049 */
1050 if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1051 fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1052 } else {
1053 int error = zfs_destroy_snaps_nvl(g_zfs,
1054 cb->cb_batchedsnaps, B_FALSE);
1055 fnvlist_free(cb->cb_batchedsnaps);
1056 cb->cb_batchedsnaps = fnvlist_alloc();
1057
1058 if (error != 0 ||
1059 zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1060 zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1061 zfs_close(zhp);
1062 return (-1);
1063 }
1064 }
1065
1066 zfs_close(zhp);
1067 return (0);
1068 }
1069
1070 static int
1071 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1072 {
1073 destroy_cbdata_t *cb = arg;
1074 const char *name = zfs_get_name(zhp);
1075 int err = 0;
1076
1077 if (nvlist_exists(cb->cb_nvl, name)) {
1078 if (cb->cb_firstsnap == NULL)
1079 cb->cb_firstsnap = strdup(name);
1080 if (cb->cb_prevsnap != NULL)
1081 free(cb->cb_prevsnap);
1082 /* this snap continues the current range */
1083 cb->cb_prevsnap = strdup(name);
1084 if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1085 nomem();
1086 if (cb->cb_verbose) {
1087 if (cb->cb_parsable) {
1088 (void) printf("destroy\t%s\n", name);
1089 } else if (cb->cb_dryrun) {
1090 (void) printf(gettext("would destroy %s\n"),
1091 name);
1092 } else {
1093 (void) printf(gettext("will destroy %s\n"),
1094 name);
1095 }
1096 }
1097 } else if (cb->cb_firstsnap != NULL) {
1098 /* end of this range */
1099 uint64_t used = 0;
1100 err = lzc_snaprange_space(cb->cb_firstsnap,
1101 cb->cb_prevsnap, &used);
1102 cb->cb_snapused += used;
1103 free(cb->cb_firstsnap);
1104 cb->cb_firstsnap = NULL;
1105 free(cb->cb_prevsnap);
1106 cb->cb_prevsnap = NULL;
1107 }
1108 zfs_close(zhp);
1109 return (err);
1110 }
1111
1112 static int
1113 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1114 {
1115 int err = 0;
1116 assert(cb->cb_firstsnap == NULL);
1117 assert(cb->cb_prevsnap == NULL);
1118 err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb);
1119 if (cb->cb_firstsnap != NULL) {
1120 uint64_t used = 0;
1121 if (err == 0) {
1122 err = lzc_snaprange_space(cb->cb_firstsnap,
1123 cb->cb_prevsnap, &used);
1124 }
1125 cb->cb_snapused += used;
1126 free(cb->cb_firstsnap);
1127 cb->cb_firstsnap = NULL;
1128 free(cb->cb_prevsnap);
1129 cb->cb_prevsnap = NULL;
1130 }
1131 return (err);
1132 }
1133
1134 static int
1135 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1136 {
1137 destroy_cbdata_t *cb = arg;
1138 int err = 0;
1139
1140 /* Check for clones. */
1141 if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1142 cb->cb_target = zhp;
1143 cb->cb_first = B_TRUE;
1144 err = zfs_iter_dependents(zhp, B_TRUE,
1145 destroy_check_dependent, cb);
1146 }
1147
1148 if (err == 0) {
1149 if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1150 nomem();
1151 }
1152 zfs_close(zhp);
1153 return (err);
1154 }
1155
1156 static int
1157 gather_snapshots(zfs_handle_t *zhp, void *arg)
1158 {
1159 destroy_cbdata_t *cb = arg;
1160 int err = 0;
1161
1162 err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1163 if (err == ENOENT)
1164 err = 0;
1165 if (err != 0)
1166 goto out;
1167
1168 if (cb->cb_verbose) {
1169 err = destroy_print_snapshots(zhp, cb);
1170 if (err != 0)
1171 goto out;
1172 }
1173
1174 if (cb->cb_recurse)
1175 err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1176
1177 out:
1178 zfs_close(zhp);
1179 return (err);
1180 }
1181
1182 static int
1183 destroy_clones(destroy_cbdata_t *cb)
1184 {
1185 nvpair_t *pair;
1186 for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1187 pair != NULL;
1188 pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1189 zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1190 ZFS_TYPE_SNAPSHOT);
1191 if (zhp != NULL) {
1192 boolean_t defer = cb->cb_defer_destroy;
1193 int err = 0;
1194
1195 /*
1196 * We can't defer destroy non-snapshots, so set it to
1197 * false while destroying the clones.
1198 */
1199 cb->cb_defer_destroy = B_FALSE;
1200 err = zfs_iter_dependents(zhp, B_FALSE,
1201 destroy_callback, cb);
1202 cb->cb_defer_destroy = defer;
1203 zfs_close(zhp);
1204 if (err != 0)
1205 return (err);
1206 }
1207 }
1208 return (0);
1209 }
1210
1211 static int
1212 zfs_do_destroy(int argc, char **argv)
1213 {
1214 destroy_cbdata_t cb = { 0 };
1215 int rv = 0;
1216 int err = 0;
1217 int c;
1218 zfs_handle_t *zhp = NULL;
1219 char *at, *pound;
1220 zfs_type_t type = ZFS_TYPE_DATASET;
1221
1222 /* check options */
1223 while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1224 switch (c) {
1225 case 'v':
1226 cb.cb_verbose = B_TRUE;
1227 break;
1228 case 'p':
1229 cb.cb_verbose = B_TRUE;
1230 cb.cb_parsable = B_TRUE;
1231 break;
1232 case 'n':
1233 cb.cb_dryrun = B_TRUE;
1234 break;
1235 case 'd':
1236 cb.cb_defer_destroy = B_TRUE;
1237 type = ZFS_TYPE_SNAPSHOT;
1238 break;
1239 case 'f':
1240 cb.cb_force = B_TRUE;
1241 break;
1242 case 'r':
1243 cb.cb_recurse = B_TRUE;
1244 break;
1245 case 'R':
1246 cb.cb_recurse = B_TRUE;
1247 cb.cb_doclones = B_TRUE;
1248 break;
1249 case '?':
1250 default:
1251 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1252 optopt);
1253 usage(B_FALSE);
1254 }
1255 }
1256
1257 argc -= optind;
1258 argv += optind;
1259
1260 /* check number of arguments */
1261 if (argc == 0) {
1262 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1263 usage(B_FALSE);
1264 }
1265 if (argc > 1) {
1266 (void) fprintf(stderr, gettext("too many arguments\n"));
1267 usage(B_FALSE);
1268 }
1269
1270 at = strchr(argv[0], '@');
1271 pound = strchr(argv[0], '#');
1272 if (at != NULL) {
1273
1274 /* Build the list of snaps to destroy in cb_nvl. */
1275 cb.cb_nvl = fnvlist_alloc();
1276
1277 *at = '\0';
1278 zhp = zfs_open(g_zfs, argv[0],
1279 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1280 if (zhp == NULL)
1281 return (1);
1282
1283 cb.cb_snapspec = at + 1;
1284 if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1285 cb.cb_error) {
1286 rv = 1;
1287 goto out;
1288 }
1289
1290 if (nvlist_empty(cb.cb_nvl)) {
1291 (void) fprintf(stderr, gettext("could not find any "
1292 "snapshots to destroy; check snapshot names.\n"));
1293 rv = 1;
1294 goto out;
1295 }
1296
1297 if (cb.cb_verbose) {
1298 char buf[16];
1299 zfs_nicenum(cb.cb_snapused, buf, sizeof (buf));
1300 if (cb.cb_parsable) {
1301 (void) printf("reclaim\t%llu\n",
1302 cb.cb_snapused);
1303 } else if (cb.cb_dryrun) {
1304 (void) printf(gettext("would reclaim %s\n"),
1305 buf);
1306 } else {
1307 (void) printf(gettext("will reclaim %s\n"),
1308 buf);
1309 }
1310 }
1311
1312 if (!cb.cb_dryrun) {
1313 if (cb.cb_doclones) {
1314 cb.cb_batchedsnaps = fnvlist_alloc();
1315 err = destroy_clones(&cb);
1316 if (err == 0) {
1317 err = zfs_destroy_snaps_nvl(g_zfs,
1318 cb.cb_batchedsnaps, B_FALSE);
1319 }
1320 if (err != 0) {
1321 rv = 1;
1322 goto out;
1323 }
1324 }
1325 if (err == 0) {
1326 err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1327 cb.cb_defer_destroy);
1328 }
1329 }
1330
1331 if (err != 0)
1332 rv = 1;
1333 } else if (pound != NULL) {
1334 int err;
1335 nvlist_t *nvl;
1336
1337 if (cb.cb_dryrun) {
1338 (void) fprintf(stderr,
1339 "dryrun is not supported with bookmark\n");
1340 return (-1);
1341 }
1342
1343 if (cb.cb_defer_destroy) {
1344 (void) fprintf(stderr,
1345 "defer destroy is not supported with bookmark\n");
1346 return (-1);
1347 }
1348
1349 if (cb.cb_recurse) {
1350 (void) fprintf(stderr,
1351 "recursive is not supported with bookmark\n");
1352 return (-1);
1353 }
1354
1355 if (!zfs_bookmark_exists(argv[0])) {
1356 (void) fprintf(stderr, gettext("bookmark '%s' "
1357 "does not exist.\n"), argv[0]);
1358 return (1);
1359 }
1360
1361 nvl = fnvlist_alloc();
1362 fnvlist_add_boolean(nvl, argv[0]);
1363
1364 err = lzc_destroy_bookmarks(nvl, NULL);
1365 if (err != 0) {
1366 (void) zfs_standard_error(g_zfs, err,
1367 "cannot destroy bookmark");
1368 }
1369
1370 nvlist_free(cb.cb_nvl);
1371
1372 return (err);
1373 } else {
1374 /* Open the given dataset */
1375 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1376 return (1);
1377
1378 cb.cb_target = zhp;
1379
1380 /*
1381 * Perform an explicit check for pools before going any further.
1382 */
1383 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1384 zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1385 (void) fprintf(stderr, gettext("cannot destroy '%s': "
1386 "operation does not apply to pools\n"),
1387 zfs_get_name(zhp));
1388 (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1389 "%s' to destroy all datasets in the pool\n"),
1390 zfs_get_name(zhp));
1391 (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1392 "to destroy the pool itself\n"), zfs_get_name(zhp));
1393 rv = 1;
1394 goto out;
1395 }
1396
1397 /*
1398 * Check for any dependents and/or clones.
1399 */
1400 cb.cb_first = B_TRUE;
1401 if (!cb.cb_doclones &&
1402 zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1403 &cb) != 0) {
1404 rv = 1;
1405 goto out;
1406 }
1407
1408 if (cb.cb_error) {
1409 rv = 1;
1410 goto out;
1411 }
1412
1413 cb.cb_batchedsnaps = fnvlist_alloc();
1414 if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1415 &cb) != 0) {
1416 rv = 1;
1417 goto out;
1418 }
1419
1420 /*
1421 * Do the real thing. The callback will close the
1422 * handle regardless of whether it succeeds or not.
1423 */
1424 err = destroy_callback(zhp, &cb);
1425 zhp = NULL;
1426 if (err == 0) {
1427 err = zfs_destroy_snaps_nvl(g_zfs,
1428 cb.cb_batchedsnaps, cb.cb_defer_destroy);
1429 }
1430 if (err != 0)
1431 rv = 1;
1432 }
1433
1434 out:
1435 fnvlist_free(cb.cb_batchedsnaps);
1436 fnvlist_free(cb.cb_nvl);
1437 if (zhp != NULL)
1438 zfs_close(zhp);
1439 return (rv);
1440 }
1441
1442 static boolean_t
1443 is_recvd_column(zprop_get_cbdata_t *cbp)
1444 {
1445 int i;
1446 zfs_get_column_t col;
1447
1448 for (i = 0; i < ZFS_GET_NCOLS &&
1449 (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1450 if (col == GET_COL_RECVD)
1451 return (B_TRUE);
1452 return (B_FALSE);
1453 }
1454
1455 /*
1456 * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1457 * < all | property[,property]... > < fs | snap | vol > ...
1458 *
1459 * -r recurse over any child datasets
1460 * -H scripted mode. Headers are stripped, and fields are separated
1461 * by tabs instead of spaces.
1462 * -o Set of fields to display. One of "name,property,value,
1463 * received,source". Default is "name,property,value,source".
1464 * "all" is an alias for all five.
1465 * -s Set of sources to allow. One of
1466 * "local,default,inherited,received,temporary,none". Default is
1467 * all six.
1468 * -p Display values in parsable (literal) format.
1469 *
1470 * Prints properties for the given datasets. The user can control which
1471 * columns to display as well as which property types to allow.
1472 */
1473
1474 /*
1475 * Invoked to display the properties for a single dataset.
1476 */
1477 static int
1478 get_callback(zfs_handle_t *zhp, void *data)
1479 {
1480 char buf[ZFS_MAXPROPLEN];
1481 char rbuf[ZFS_MAXPROPLEN];
1482 zprop_source_t sourcetype;
1483 char source[ZFS_MAXNAMELEN];
1484 zprop_get_cbdata_t *cbp = data;
1485 nvlist_t *user_props = zfs_get_user_props(zhp);
1486 zprop_list_t *pl = cbp->cb_proplist;
1487 nvlist_t *propval;
1488 char *strval;
1489 char *sourceval;
1490 boolean_t received = is_recvd_column(cbp);
1491
1492 for (; pl != NULL; pl = pl->pl_next) {
1493 char *recvdval = NULL;
1494 /*
1495 * Skip the special fake placeholder. This will also skip over
1496 * the name property when 'all' is specified.
1497 */
1498 if (pl->pl_prop == ZFS_PROP_NAME &&
1499 pl == cbp->cb_proplist)
1500 continue;
1501
1502 if (pl->pl_prop != ZPROP_INVAL) {
1503 if (zfs_prop_get(zhp, pl->pl_prop, buf,
1504 sizeof (buf), &sourcetype, source,
1505 sizeof (source),
1506 cbp->cb_literal) != 0) {
1507 if (pl->pl_all)
1508 continue;
1509 if (!zfs_prop_valid_for_type(pl->pl_prop,
1510 ZFS_TYPE_DATASET)) {
1511 (void) fprintf(stderr,
1512 gettext("No such property '%s'\n"),
1513 zfs_prop_to_name(pl->pl_prop));
1514 continue;
1515 }
1516 sourcetype = ZPROP_SRC_NONE;
1517 (void) strlcpy(buf, "-", sizeof (buf));
1518 }
1519
1520 if (received && (zfs_prop_get_recvd(zhp,
1521 zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1522 cbp->cb_literal) == 0))
1523 recvdval = rbuf;
1524
1525 zprop_print_one_property(zfs_get_name(zhp), cbp,
1526 zfs_prop_to_name(pl->pl_prop),
1527 buf, sourcetype, source, recvdval);
1528 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1529 sourcetype = ZPROP_SRC_LOCAL;
1530
1531 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1532 buf, sizeof (buf), cbp->cb_literal) != 0) {
1533 sourcetype = ZPROP_SRC_NONE;
1534 (void) strlcpy(buf, "-", sizeof (buf));
1535 }
1536
1537 zprop_print_one_property(zfs_get_name(zhp), cbp,
1538 pl->pl_user_prop, buf, sourcetype, source, NULL);
1539 } else if (zfs_prop_written(pl->pl_user_prop)) {
1540 sourcetype = ZPROP_SRC_LOCAL;
1541
1542 if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1543 buf, sizeof (buf), cbp->cb_literal) != 0) {
1544 sourcetype = ZPROP_SRC_NONE;
1545 (void) strlcpy(buf, "-", sizeof (buf));
1546 }
1547
1548 zprop_print_one_property(zfs_get_name(zhp), cbp,
1549 pl->pl_user_prop, buf, sourcetype, source, NULL);
1550 } else {
1551 if (nvlist_lookup_nvlist(user_props,
1552 pl->pl_user_prop, &propval) != 0) {
1553 if (pl->pl_all)
1554 continue;
1555 sourcetype = ZPROP_SRC_NONE;
1556 strval = "-";
1557 } else {
1558 verify(nvlist_lookup_string(propval,
1559 ZPROP_VALUE, &strval) == 0);
1560 verify(nvlist_lookup_string(propval,
1561 ZPROP_SOURCE, &sourceval) == 0);
1562
1563 if (strcmp(sourceval,
1564 zfs_get_name(zhp)) == 0) {
1565 sourcetype = ZPROP_SRC_LOCAL;
1566 } else if (strcmp(sourceval,
1567 ZPROP_SOURCE_VAL_RECVD) == 0) {
1568 sourcetype = ZPROP_SRC_RECEIVED;
1569 } else {
1570 sourcetype = ZPROP_SRC_INHERITED;
1571 (void) strlcpy(source,
1572 sourceval, sizeof (source));
1573 }
1574 }
1575
1576 if (received && (zfs_prop_get_recvd(zhp,
1577 pl->pl_user_prop, rbuf, sizeof (rbuf),
1578 cbp->cb_literal) == 0))
1579 recvdval = rbuf;
1580
1581 zprop_print_one_property(zfs_get_name(zhp), cbp,
1582 pl->pl_user_prop, strval, sourcetype,
1583 source, recvdval);
1584 }
1585 }
1586
1587 return (0);
1588 }
1589
1590 static int
1591 zfs_do_get(int argc, char **argv)
1592 {
1593 zprop_get_cbdata_t cb = { 0 };
1594 int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1595 int types = ZFS_TYPE_DATASET;
1596 char *value, *fields;
1597 int ret = 0;
1598 int limit = 0;
1599 zprop_list_t fake_name = { 0 };
1600
1601 /*
1602 * Set up default columns and sources.
1603 */
1604 cb.cb_sources = ZPROP_SRC_ALL;
1605 cb.cb_columns[0] = GET_COL_NAME;
1606 cb.cb_columns[1] = GET_COL_PROPERTY;
1607 cb.cb_columns[2] = GET_COL_VALUE;
1608 cb.cb_columns[3] = GET_COL_SOURCE;
1609 cb.cb_type = ZFS_TYPE_DATASET;
1610
1611 /* check options */
1612 while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1613 switch (c) {
1614 case 'p':
1615 cb.cb_literal = B_TRUE;
1616 break;
1617 case 'd':
1618 limit = parse_depth(optarg, &flags);
1619 break;
1620 case 'r':
1621 flags |= ZFS_ITER_RECURSE;
1622 break;
1623 case 'H':
1624 cb.cb_scripted = B_TRUE;
1625 break;
1626 case ':':
1627 (void) fprintf(stderr, gettext("missing argument for "
1628 "'%c' option\n"), optopt);
1629 usage(B_FALSE);
1630 break;
1631 case 'o':
1632 /*
1633 * Process the set of columns to display. We zero out
1634 * the structure to give us a blank slate.
1635 */
1636 bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1637 i = 0;
1638 while (*optarg != '\0') {
1639 static char *col_subopts[] =
1640 { "name", "property", "value", "received",
1641 "source", "all", NULL };
1642
1643 if (i == ZFS_GET_NCOLS) {
1644 (void) fprintf(stderr, gettext("too "
1645 "many fields given to -o "
1646 "option\n"));
1647 usage(B_FALSE);
1648 }
1649
1650 switch (getsubopt(&optarg, col_subopts,
1651 &value)) {
1652 case 0:
1653 cb.cb_columns[i++] = GET_COL_NAME;
1654 break;
1655 case 1:
1656 cb.cb_columns[i++] = GET_COL_PROPERTY;
1657 break;
1658 case 2:
1659 cb.cb_columns[i++] = GET_COL_VALUE;
1660 break;
1661 case 3:
1662 cb.cb_columns[i++] = GET_COL_RECVD;
1663 flags |= ZFS_ITER_RECVD_PROPS;
1664 break;
1665 case 4:
1666 cb.cb_columns[i++] = GET_COL_SOURCE;
1667 break;
1668 case 5:
1669 if (i > 0) {
1670 (void) fprintf(stderr,
1671 gettext("\"all\" conflicts "
1672 "with specific fields "
1673 "given to -o option\n"));
1674 usage(B_FALSE);
1675 }
1676 cb.cb_columns[0] = GET_COL_NAME;
1677 cb.cb_columns[1] = GET_COL_PROPERTY;
1678 cb.cb_columns[2] = GET_COL_VALUE;
1679 cb.cb_columns[3] = GET_COL_RECVD;
1680 cb.cb_columns[4] = GET_COL_SOURCE;
1681 flags |= ZFS_ITER_RECVD_PROPS;
1682 i = ZFS_GET_NCOLS;
1683 break;
1684 default:
1685 (void) fprintf(stderr,
1686 gettext("invalid column name "
1687 "'%s'\n"), value);
1688 usage(B_FALSE);
1689 }
1690 }
1691 break;
1692
1693 case 's':
1694 cb.cb_sources = 0;
1695 while (*optarg != '\0') {
1696 static char *source_subopts[] = {
1697 "local", "default", "inherited",
1698 "received", "temporary", "none",
1699 NULL };
1700
1701 switch (getsubopt(&optarg, source_subopts,
1702 &value)) {
1703 case 0:
1704 cb.cb_sources |= ZPROP_SRC_LOCAL;
1705 break;
1706 case 1:
1707 cb.cb_sources |= ZPROP_SRC_DEFAULT;
1708 break;
1709 case 2:
1710 cb.cb_sources |= ZPROP_SRC_INHERITED;
1711 break;
1712 case 3:
1713 cb.cb_sources |= ZPROP_SRC_RECEIVED;
1714 break;
1715 case 4:
1716 cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1717 break;
1718 case 5:
1719 cb.cb_sources |= ZPROP_SRC_NONE;
1720 break;
1721 default:
1722 (void) fprintf(stderr,
1723 gettext("invalid source "
1724 "'%s'\n"), value);
1725 usage(B_FALSE);
1726 }
1727 }
1728 break;
1729
1730 case 't':
1731 types = 0;
1732 flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1733 while (*optarg != '\0') {
1734 static char *type_subopts[] = { "filesystem",
1735 "volume", "snapshot", "bookmark",
1736 "all", NULL };
1737
1738 switch (getsubopt(&optarg, type_subopts,
1739 &value)) {
1740 case 0:
1741 types |= ZFS_TYPE_FILESYSTEM;
1742 break;
1743 case 1:
1744 types |= ZFS_TYPE_VOLUME;
1745 break;
1746 case 2:
1747 types |= ZFS_TYPE_SNAPSHOT;
1748 break;
1749 case 3:
1750 types |= ZFS_TYPE_BOOKMARK;
1751 break;
1752 case 4:
1753 types = ZFS_TYPE_DATASET |
1754 ZFS_TYPE_BOOKMARK;
1755 break;
1756
1757 default:
1758 (void) fprintf(stderr,
1759 gettext("invalid type '%s'\n"),
1760 value);
1761 usage(B_FALSE);
1762 }
1763 }
1764 break;
1765
1766 case '?':
1767 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1768 optopt);
1769 usage(B_FALSE);
1770 }
1771 }
1772
1773 argc -= optind;
1774 argv += optind;
1775
1776 if (argc < 1) {
1777 (void) fprintf(stderr, gettext("missing property "
1778 "argument\n"));
1779 usage(B_FALSE);
1780 }
1781
1782 fields = argv[0];
1783
1784 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1785 != 0)
1786 usage(B_FALSE);
1787
1788 argc--;
1789 argv++;
1790
1791 /*
1792 * As part of zfs_expand_proplist(), we keep track of the maximum column
1793 * width for each property. For the 'NAME' (and 'SOURCE') columns, we
1794 * need to know the maximum name length. However, the user likely did
1795 * not specify 'name' as one of the properties to fetch, so we need to
1796 * make sure we always include at least this property for
1797 * print_get_headers() to work properly.
1798 */
1799 if (cb.cb_proplist != NULL) {
1800 fake_name.pl_prop = ZFS_PROP_NAME;
1801 fake_name.pl_width = strlen(gettext("NAME"));
1802 fake_name.pl_next = cb.cb_proplist;
1803 cb.cb_proplist = &fake_name;
1804 }
1805
1806 cb.cb_first = B_TRUE;
1807
1808 /* run for each object */
1809 ret = zfs_for_each(argc, argv, flags, types, NULL,
1810 &cb.cb_proplist, limit, get_callback, &cb);
1811
1812 if (cb.cb_proplist == &fake_name)
1813 zprop_free_list(fake_name.pl_next);
1814 else
1815 zprop_free_list(cb.cb_proplist);
1816
1817 return (ret);
1818 }
1819
1820 /*
1821 * inherit [-rS] <property> <fs|vol> ...
1822 *
1823 * -r Recurse over all children
1824 * -S Revert to received value, if any
1825 *
1826 * For each dataset specified on the command line, inherit the given property
1827 * from its parent. Inheriting a property at the pool level will cause it to
1828 * use the default value. The '-r' flag will recurse over all children, and is
1829 * useful for setting a property on a hierarchy-wide basis, regardless of any
1830 * local modifications for each dataset.
1831 */
1832
1833 typedef struct inherit_cbdata {
1834 const char *cb_propname;
1835 boolean_t cb_received;
1836 } inherit_cbdata_t;
1837
1838 static int
1839 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1840 {
1841 inherit_cbdata_t *cb = data;
1842 zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
1843
1844 /*
1845 * If we're doing it recursively, then ignore properties that
1846 * are not valid for this type of dataset.
1847 */
1848 if (prop != ZPROP_INVAL &&
1849 !zfs_prop_valid_for_type(prop, zfs_get_type(zhp)))
1850 return (0);
1851
1852 return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1853 }
1854
1855 static int
1856 inherit_cb(zfs_handle_t *zhp, void *data)
1857 {
1858 inherit_cbdata_t *cb = data;
1859
1860 return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1861 }
1862
1863 static int
1864 zfs_do_inherit(int argc, char **argv)
1865 {
1866 int c;
1867 zfs_prop_t prop;
1868 inherit_cbdata_t cb = { 0 };
1869 char *propname;
1870 int ret = 0;
1871 int flags = 0;
1872 boolean_t received = B_FALSE;
1873
1874 /* check options */
1875 while ((c = getopt(argc, argv, "rS")) != -1) {
1876 switch (c) {
1877 case 'r':
1878 flags |= ZFS_ITER_RECURSE;
1879 break;
1880 case 'S':
1881 received = B_TRUE;
1882 break;
1883 case '?':
1884 default:
1885 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1886 optopt);
1887 usage(B_FALSE);
1888 }
1889 }
1890
1891 argc -= optind;
1892 argv += optind;
1893
1894 /* check number of arguments */
1895 if (argc < 1) {
1896 (void) fprintf(stderr, gettext("missing property argument\n"));
1897 usage(B_FALSE);
1898 }
1899 if (argc < 2) {
1900 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1901 usage(B_FALSE);
1902 }
1903
1904 propname = argv[0];
1905 argc--;
1906 argv++;
1907
1908 if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
1909 if (zfs_prop_readonly(prop)) {
1910 (void) fprintf(stderr, gettext(
1911 "%s property is read-only\n"),
1912 propname);
1913 return (1);
1914 }
1915 if (!zfs_prop_inheritable(prop) && !received) {
1916 (void) fprintf(stderr, gettext("'%s' property cannot "
1917 "be inherited\n"), propname);
1918 if (prop == ZFS_PROP_QUOTA ||
1919 prop == ZFS_PROP_RESERVATION ||
1920 prop == ZFS_PROP_REFQUOTA ||
1921 prop == ZFS_PROP_REFRESERVATION) {
1922 (void) fprintf(stderr, gettext("use 'zfs set "
1923 "%s=none' to clear\n"), propname);
1924 (void) fprintf(stderr, gettext("use 'zfs "
1925 "inherit -S %s' to revert to received "
1926 "value\n"), propname);
1927 }
1928 return (1);
1929 }
1930 if (received && (prop == ZFS_PROP_VOLSIZE ||
1931 prop == ZFS_PROP_VERSION)) {
1932 (void) fprintf(stderr, gettext("'%s' property cannot "
1933 "be reverted to a received value\n"), propname);
1934 return (1);
1935 }
1936 } else if (!zfs_prop_user(propname)) {
1937 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
1938 propname);
1939 usage(B_FALSE);
1940 }
1941
1942 cb.cb_propname = propname;
1943 cb.cb_received = received;
1944
1945 if (flags & ZFS_ITER_RECURSE) {
1946 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1947 NULL, NULL, 0, inherit_recurse_cb, &cb);
1948 } else {
1949 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
1950 NULL, NULL, 0, inherit_cb, &cb);
1951 }
1952
1953 return (ret);
1954 }
1955
1956 typedef struct upgrade_cbdata {
1957 uint64_t cb_numupgraded;
1958 uint64_t cb_numsamegraded;
1959 uint64_t cb_numfailed;
1960 uint64_t cb_version;
1961 boolean_t cb_newer;
1962 boolean_t cb_foundone;
1963 char cb_lastfs[ZFS_MAXNAMELEN];
1964 } upgrade_cbdata_t;
1965
1966 static int
1967 same_pool(zfs_handle_t *zhp, const char *name)
1968 {
1969 int len1 = strcspn(name, "/@");
1970 const char *zhname = zfs_get_name(zhp);
1971 int len2 = strcspn(zhname, "/@");
1972
1973 if (len1 != len2)
1974 return (B_FALSE);
1975 return (strncmp(name, zhname, len1) == 0);
1976 }
1977
1978 static int
1979 upgrade_list_callback(zfs_handle_t *zhp, void *data)
1980 {
1981 upgrade_cbdata_t *cb = data;
1982 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1983
1984 /* list if it's old/new */
1985 if ((!cb->cb_newer && version < ZPL_VERSION) ||
1986 (cb->cb_newer && version > ZPL_VERSION)) {
1987 char *str;
1988 if (cb->cb_newer) {
1989 str = gettext("The following filesystems are "
1990 "formatted using a newer software version and\n"
1991 "cannot be accessed on the current system.\n\n");
1992 } else {
1993 str = gettext("The following filesystems are "
1994 "out of date, and can be upgraded. After being\n"
1995 "upgraded, these filesystems (and any 'zfs send' "
1996 "streams generated from\n"
1997 "subsequent snapshots) will no longer be "
1998 "accessible by older software versions.\n\n");
1999 }
2000
2001 if (!cb->cb_foundone) {
2002 (void) puts(str);
2003 (void) printf(gettext("VER FILESYSTEM\n"));
2004 (void) printf(gettext("--- ------------\n"));
2005 cb->cb_foundone = B_TRUE;
2006 }
2007
2008 (void) printf("%2u %s\n", version, zfs_get_name(zhp));
2009 }
2010
2011 return (0);
2012 }
2013
2014 static int
2015 upgrade_set_callback(zfs_handle_t *zhp, void *data)
2016 {
2017 upgrade_cbdata_t *cb = data;
2018 int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2019 int needed_spa_version;
2020 int spa_version;
2021
2022 if (zfs_spa_version(zhp, &spa_version) < 0)
2023 return (-1);
2024
2025 needed_spa_version = zfs_spa_version_map(cb->cb_version);
2026
2027 if (needed_spa_version < 0)
2028 return (-1);
2029
2030 if (spa_version < needed_spa_version) {
2031 /* can't upgrade */
2032 (void) printf(gettext("%s: can not be "
2033 "upgraded; the pool version needs to first "
2034 "be upgraded\nto version %d\n\n"),
2035 zfs_get_name(zhp), needed_spa_version);
2036 cb->cb_numfailed++;
2037 return (0);
2038 }
2039
2040 /* upgrade */
2041 if (version < cb->cb_version) {
2042 char verstr[16];
2043 (void) snprintf(verstr, sizeof (verstr),
2044 "%llu", cb->cb_version);
2045 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
2046 /*
2047 * If they did "zfs upgrade -a", then we could
2048 * be doing ioctls to different pools. We need
2049 * to log this history once to each pool, and bypass
2050 * the normal history logging that happens in main().
2051 */
2052 (void) zpool_log_history(g_zfs, history_str);
2053 log_history = B_FALSE;
2054 }
2055 if (zfs_prop_set(zhp, "version", verstr) == 0)
2056 cb->cb_numupgraded++;
2057 else
2058 cb->cb_numfailed++;
2059 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
2060 } else if (version > cb->cb_version) {
2061 /* can't downgrade */
2062 (void) printf(gettext("%s: can not be downgraded; "
2063 "it is already at version %u\n"),
2064 zfs_get_name(zhp), version);
2065 cb->cb_numfailed++;
2066 } else {
2067 cb->cb_numsamegraded++;
2068 }
2069 return (0);
2070 }
2071
2072 /*
2073 * zfs upgrade
2074 * zfs upgrade -v
2075 * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2076 */
2077 static int
2078 zfs_do_upgrade(int argc, char **argv)
2079 {
2080 boolean_t all = B_FALSE;
2081 boolean_t showversions = B_FALSE;
2082 int ret = 0;
2083 upgrade_cbdata_t cb = { 0 };
2084 char c;
2085 int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2086
2087 /* check options */
2088 while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2089 switch (c) {
2090 case 'r':
2091 flags |= ZFS_ITER_RECURSE;
2092 break;
2093 case 'v':
2094 showversions = B_TRUE;
2095 break;
2096 case 'V':
2097 if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2098 optarg, &cb.cb_version) != 0) {
2099 (void) fprintf(stderr,
2100 gettext("invalid version %s\n"), optarg);
2101 usage(B_FALSE);
2102 }
2103 break;
2104 case 'a':
2105 all = B_TRUE;
2106 break;
2107 case '?':
2108 default:
2109 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2110 optopt);
2111 usage(B_FALSE);
2112 }
2113 }
2114
2115 argc -= optind;
2116 argv += optind;
2117
2118 if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2119 usage(B_FALSE);
2120 if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2121 cb.cb_version || argc))
2122 usage(B_FALSE);
2123 if ((all || argc) && (showversions))
2124 usage(B_FALSE);
2125 if (all && argc)
2126 usage(B_FALSE);
2127
2128 if (showversions) {
2129 /* Show info on available versions. */
2130 (void) printf(gettext("The following filesystem versions are "
2131 "supported:\n\n"));
2132 (void) printf(gettext("VER DESCRIPTION\n"));
2133 (void) printf("--- -----------------------------------------"
2134 "---------------\n");
2135 (void) printf(gettext(" 1 Initial ZFS filesystem version\n"));
2136 (void) printf(gettext(" 2 Enhanced directory entries\n"));
2137 (void) printf(gettext(" 3 Case insensitive and filesystem "
2138 "user identifier (FUID)\n"));
2139 (void) printf(gettext(" 4 userquota, groupquota "
2140 "properties\n"));
2141 (void) printf(gettext(" 5 System attributes\n"));
2142 (void) printf(gettext("\nFor more information on a particular "
2143 "version, including supported releases,\n"));
2144 (void) printf("see the ZFS Administration Guide.\n\n");
2145 ret = 0;
2146 } else if (argc || all) {
2147 /* Upgrade filesystems */
2148 if (cb.cb_version == 0)
2149 cb.cb_version = ZPL_VERSION;
2150 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2151 NULL, NULL, 0, upgrade_set_callback, &cb);
2152 (void) printf(gettext("%llu filesystems upgraded\n"),
2153 cb.cb_numupgraded);
2154 if (cb.cb_numsamegraded) {
2155 (void) printf(gettext("%llu filesystems already at "
2156 "this version\n"),
2157 cb.cb_numsamegraded);
2158 }
2159 if (cb.cb_numfailed != 0)
2160 ret = 1;
2161 } else {
2162 /* List old-version filesytems */
2163 boolean_t found;
2164 (void) printf(gettext("This system is currently running "
2165 "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2166
2167 flags |= ZFS_ITER_RECURSE;
2168 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2169 NULL, NULL, 0, upgrade_list_callback, &cb);
2170
2171 found = cb.cb_foundone;
2172 cb.cb_foundone = B_FALSE;
2173 cb.cb_newer = B_TRUE;
2174
2175 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2176 NULL, NULL, 0, upgrade_list_callback, &cb);
2177
2178 if (!cb.cb_foundone && !found) {
2179 (void) printf(gettext("All filesystems are "
2180 "formatted with the current version.\n"));
2181 }
2182 }
2183
2184 return (ret);
2185 }
2186
2187 /*
2188 * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2189 * [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2190 * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2191 * [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2192 *
2193 * -H Scripted mode; elide headers and separate columns by tabs.
2194 * -i Translate SID to POSIX ID.
2195 * -n Print numeric ID instead of user/group name.
2196 * -o Control which fields to display.
2197 * -p Use exact (parsable) numeric output.
2198 * -s Specify sort columns, descending order.
2199 * -S Specify sort columns, ascending order.
2200 * -t Control which object types to display.
2201 *
2202 * Displays space consumed by, and quotas on, each user in the specified
2203 * filesystem or snapshot.
2204 */
2205
2206 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2207 enum us_field_types {
2208 USFIELD_TYPE,
2209 USFIELD_NAME,
2210 USFIELD_USED,
2211 USFIELD_QUOTA
2212 };
2213 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA" };
2214 static char *us_field_names[] = { "type", "name", "used", "quota" };
2215 #define USFIELD_LAST (sizeof (us_field_names) / sizeof (char *))
2216
2217 #define USTYPE_PSX_GRP (1 << 0)
2218 #define USTYPE_PSX_USR (1 << 1)
2219 #define USTYPE_SMB_GRP (1 << 2)
2220 #define USTYPE_SMB_USR (1 << 3)
2221 #define USTYPE_ALL \
2222 (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR)
2223
2224 static int us_type_bits[] = {
2225 USTYPE_PSX_GRP,
2226 USTYPE_PSX_USR,
2227 USTYPE_SMB_GRP,
2228 USTYPE_SMB_USR,
2229 USTYPE_ALL
2230 };
2231 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2232 "smbuser", "all" };
2233
2234 typedef struct us_node {
2235 nvlist_t *usn_nvl;
2236 uu_avl_node_t usn_avlnode;
2237 uu_list_node_t usn_listnode;
2238 } us_node_t;
2239
2240 typedef struct us_cbdata {
2241 nvlist_t **cb_nvlp;
2242 uu_avl_pool_t *cb_avl_pool;
2243 uu_avl_t *cb_avl;
2244 boolean_t cb_numname;
2245 boolean_t cb_nicenum;
2246 boolean_t cb_sid2posix;
2247 zfs_userquota_prop_t cb_prop;
2248 zfs_sort_column_t *cb_sortcol;
2249 size_t cb_width[USFIELD_LAST];
2250 } us_cbdata_t;
2251
2252 static boolean_t us_populated = B_FALSE;
2253
2254 typedef struct {
2255 zfs_sort_column_t *si_sortcol;
2256 boolean_t si_numname;
2257 } us_sort_info_t;
2258
2259 static int
2260 us_field_index(char *field)
2261 {
2262 int i;
2263
2264 for (i = 0; i < USFIELD_LAST; i++) {
2265 if (strcmp(field, us_field_names[i]) == 0)
2266 return (i);
2267 }
2268
2269 return (-1);
2270 }
2271
2272 static int
2273 us_compare(const void *larg, const void *rarg, void *unused)
2274 {
2275 const us_node_t *l = larg;
2276 const us_node_t *r = rarg;
2277 us_sort_info_t *si = (us_sort_info_t *)unused;
2278 zfs_sort_column_t *sortcol = si->si_sortcol;
2279 boolean_t numname = si->si_numname;
2280 nvlist_t *lnvl = l->usn_nvl;
2281 nvlist_t *rnvl = r->usn_nvl;
2282 int rc = 0;
2283 boolean_t lvb, rvb;
2284
2285 for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2286 char *lvstr = "";
2287 char *rvstr = "";
2288 uint32_t lv32 = 0;
2289 uint32_t rv32 = 0;
2290 uint64_t lv64 = 0;
2291 uint64_t rv64 = 0;
2292 zfs_prop_t prop = sortcol->sc_prop;
2293 const char *propname = NULL;
2294 boolean_t reverse = sortcol->sc_reverse;
2295
2296 switch (prop) {
2297 case ZFS_PROP_TYPE:
2298 propname = "type";
2299 (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2300 (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2301 if (rv32 != lv32)
2302 rc = (rv32 < lv32) ? 1 : -1;
2303 break;
2304 case ZFS_PROP_NAME:
2305 propname = "name";
2306 if (numname) {
2307 (void) nvlist_lookup_uint64(lnvl, propname,
2308 &lv64);
2309 (void) nvlist_lookup_uint64(rnvl, propname,
2310 &rv64);
2311 if (rv64 != lv64)
2312 rc = (rv64 < lv64) ? 1 : -1;
2313 } else {
2314 (void) nvlist_lookup_string(lnvl, propname,
2315 &lvstr);
2316 (void) nvlist_lookup_string(rnvl, propname,
2317 &rvstr);
2318 rc = strcmp(lvstr, rvstr);
2319 }
2320 break;
2321 case ZFS_PROP_USED:
2322 case ZFS_PROP_QUOTA:
2323 if (!us_populated)
2324 break;
2325 if (prop == ZFS_PROP_USED)
2326 propname = "used";
2327 else
2328 propname = "quota";
2329 (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2330 (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2331 if (rv64 != lv64)
2332 rc = (rv64 < lv64) ? 1 : -1;
2333 break;
2334 }
2335
2336 if (rc != 0) {
2337 if (rc < 0)
2338 return (reverse ? 1 : -1);
2339 else
2340 return (reverse ? -1 : 1);
2341 }
2342 }
2343
2344 /*
2345 * If entries still seem to be the same, check if they are of the same
2346 * type (smbentity is added only if we are doing SID to POSIX ID
2347 * translation where we can have duplicate type/name combinations).
2348 */
2349 if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2350 nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2351 lvb != rvb)
2352 return (lvb < rvb ? -1 : 1);
2353
2354 return (0);
2355 }
2356
2357 static inline const char *
2358 us_type2str(unsigned field_type)
2359 {
2360 switch (field_type) {
2361 case USTYPE_PSX_USR:
2362 return ("POSIX User");
2363 case USTYPE_PSX_GRP:
2364 return ("POSIX Group");
2365 case USTYPE_SMB_USR:
2366 return ("SMB User");
2367 case USTYPE_SMB_GRP:
2368 return ("SMB Group");
2369 default:
2370 return ("Undefined");
2371 }
2372 }
2373
2374 static int
2375 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2376 {
2377 us_cbdata_t *cb = (us_cbdata_t *)arg;
2378 zfs_userquota_prop_t prop = cb->cb_prop;
2379 char *name = NULL;
2380 char *propname;
2381 char sizebuf[32];
2382 us_node_t *node;
2383 uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2384 uu_avl_t *avl = cb->cb_avl;
2385 uu_avl_index_t idx;
2386 nvlist_t *props;
2387 us_node_t *n;
2388 zfs_sort_column_t *sortcol = cb->cb_sortcol;
2389 unsigned type;
2390 const char *typestr;
2391 size_t namelen;
2392 size_t typelen;
2393 size_t sizelen;
2394 int typeidx, nameidx, sizeidx;
2395 us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2396 boolean_t smbentity = B_FALSE;
2397
2398 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2399 nomem();
2400 node = safe_malloc(sizeof (us_node_t));
2401 uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2402 node->usn_nvl = props;
2403
2404 if (domain != NULL && domain[0] != '\0') {
2405 /* SMB */
2406 char sid[ZFS_MAXNAMELEN + 32];
2407 uid_t id;
2408 int err;
2409 int flag = IDMAP_REQ_FLG_USE_CACHE;
2410
2411 smbentity = B_TRUE;
2412
2413 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2414
2415 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2416 type = USTYPE_SMB_GRP;
2417 err = sid_to_id(sid, B_FALSE, &id);
2418 } else {
2419 type = USTYPE_SMB_USR;
2420 err = sid_to_id(sid, B_TRUE, &id);
2421 }
2422
2423 if (err == 0) {
2424 rid = id;
2425 if (!cb->cb_sid2posix) {
2426 if (type == USTYPE_SMB_USR) {
2427 (void) idmap_getwinnamebyuid(rid, flag,
2428 &name, NULL);
2429 } else {
2430 (void) idmap_getwinnamebygid(rid, flag,
2431 &name, NULL);
2432 }
2433 if (name == NULL)
2434 name = sid;
2435 }
2436 }
2437 }
2438
2439 if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2440 /* POSIX or -i */
2441 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2442 type = USTYPE_PSX_GRP;
2443 if (!cb->cb_numname) {
2444 struct group *g;
2445
2446 if ((g = getgrgid(rid)) != NULL)
2447 name = g->gr_name;
2448 }
2449 } else {
2450 type = USTYPE_PSX_USR;
2451 if (!cb->cb_numname) {
2452 struct passwd *p;
2453
2454 if ((p = getpwuid(rid)) != NULL)
2455 name = p->pw_name;
2456 }
2457 }
2458 }
2459
2460 /*
2461 * Make sure that the type/name combination is unique when doing
2462 * SID to POSIX ID translation (hence changing the type from SMB to
2463 * POSIX).
2464 */
2465 if (cb->cb_sid2posix &&
2466 nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2467 nomem();
2468
2469 /* Calculate/update width of TYPE field */
2470 typestr = us_type2str(type);
2471 typelen = strlen(gettext(typestr));
2472 typeidx = us_field_index("type");
2473 if (typelen > cb->cb_width[typeidx])
2474 cb->cb_width[typeidx] = typelen;
2475 if (nvlist_add_uint32(props, "type", type) != 0)
2476 nomem();
2477
2478 /* Calculate/update width of NAME field */
2479 if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2480 if (nvlist_add_uint64(props, "name", rid) != 0)
2481 nomem();
2482 namelen = snprintf(NULL, 0, "%u", rid);
2483 } else {
2484 if (nvlist_add_string(props, "name", name) != 0)
2485 nomem();
2486 namelen = strlen(name);
2487 }
2488 nameidx = us_field_index("name");
2489 if (namelen > cb->cb_width[nameidx])
2490 cb->cb_width[nameidx] = namelen;
2491
2492 /*
2493 * Check if this type/name combination is in the list and update it;
2494 * otherwise add new node to the list.
2495 */
2496 if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2497 uu_avl_insert(avl, node, idx);
2498 } else {
2499 nvlist_free(props);
2500 free(node);
2501 node = n;
2502 props = node->usn_nvl;
2503 }
2504
2505 /* Calculate/update width of USED/QUOTA fields */
2506 if (cb->cb_nicenum)
2507 zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2508 else
2509 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu", space);
2510 sizelen = strlen(sizebuf);
2511 if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED) {
2512 propname = "used";
2513 if (!nvlist_exists(props, "quota"))
2514 (void) nvlist_add_uint64(props, "quota", 0);
2515 } else {
2516 propname = "quota";
2517 if (!nvlist_exists(props, "used"))
2518 (void) nvlist_add_uint64(props, "used", 0);
2519 }
2520 sizeidx = us_field_index(propname);
2521 if (sizelen > cb->cb_width[sizeidx])
2522 cb->cb_width[sizeidx] = sizelen;
2523
2524 if (nvlist_add_uint64(props, propname, space) != 0)
2525 nomem();
2526
2527 return (0);
2528 }
2529
2530 static void
2531 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2532 size_t *width, us_node_t *node)
2533 {
2534 nvlist_t *nvl = node->usn_nvl;
2535 char valstr[ZFS_MAXNAMELEN];
2536 boolean_t first = B_TRUE;
2537 int cfield = 0;
2538 int field;
2539 uint32_t ustype;
2540
2541 /* Check type */
2542 (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2543 if (!(ustype & types))
2544 return;
2545
2546 while ((field = fields[cfield]) != USFIELD_LAST) {
2547 nvpair_t *nvp = NULL;
2548 data_type_t type;
2549 uint32_t val32;
2550 uint64_t val64;
2551 char *strval = NULL;
2552
2553 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2554 if (strcmp(nvpair_name(nvp),
2555 us_field_names[field]) == 0)
2556 break;
2557 }
2558
2559 type = nvpair_type(nvp);
2560 switch (type) {
2561 case DATA_TYPE_UINT32:
2562 (void) nvpair_value_uint32(nvp, &val32);
2563 break;
2564 case DATA_TYPE_UINT64:
2565 (void) nvpair_value_uint64(nvp, &val64);
2566 break;
2567 case DATA_TYPE_STRING:
2568 (void) nvpair_value_string(nvp, &strval);
2569 break;
2570 default:
2571 (void) fprintf(stderr, "invalid data type\n");
2572 }
2573
2574 switch (field) {
2575 case USFIELD_TYPE:
2576 strval = (char *)us_type2str(val32);
2577 break;
2578 case USFIELD_NAME:
2579 if (type == DATA_TYPE_UINT64) {
2580 (void) sprintf(valstr, "%llu", val64);
2581 strval = valstr;
2582 }
2583 break;
2584 case USFIELD_USED:
2585 case USFIELD_QUOTA:
2586 if (type == DATA_TYPE_UINT64) {
2587 if (parsable) {
2588 (void) sprintf(valstr, "%llu", val64);
2589 } else {
2590 zfs_nicenum(val64, valstr,
2591 sizeof (valstr));
2592 }
2593 if (field == USFIELD_QUOTA &&
2594 strcmp(valstr, "0") == 0)
2595 strval = "none";
2596 else
2597 strval = valstr;
2598 }
2599 break;
2600 }
2601
2602 if (!first) {
2603 if (scripted)
2604 (void) printf("\t");
2605 else
2606 (void) printf(" ");
2607 }
2608 if (scripted)
2609 (void) printf("%s", strval);
2610 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2611 (void) printf("%-*s", width[field], strval);
2612 else
2613 (void) printf("%*s", width[field], strval);
2614
2615 first = B_FALSE;
2616 cfield++;
2617 }
2618
2619 (void) printf("\n");
2620 }
2621
2622 static void
2623 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2624 size_t *width, boolean_t rmnode, uu_avl_t *avl)
2625 {
2626 us_node_t *node;
2627 const char *col;
2628 int cfield = 0;
2629 int field;
2630
2631 if (!scripted) {
2632 boolean_t first = B_TRUE;
2633
2634 while ((field = fields[cfield]) != USFIELD_LAST) {
2635 col = gettext(us_field_hdr[field]);
2636 if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2637 (void) printf(first ? "%-*s" : " %-*s",
2638 width[field], col);
2639 } else {
2640 (void) printf(first ? "%*s" : " %*s",
2641 width[field], col);
2642 }
2643 first = B_FALSE;
2644 cfield++;
2645 }
2646 (void) printf("\n");
2647 }
2648
2649 for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2650 print_us_node(scripted, parsable, fields, types, width, node);
2651 if (rmnode)
2652 nvlist_free(node->usn_nvl);
2653 }
2654 }
2655
2656 static int
2657 zfs_do_userspace(int argc, char **argv)
2658 {
2659 zfs_handle_t *zhp;
2660 zfs_userquota_prop_t p;
2661 uu_avl_pool_t *avl_pool;
2662 uu_avl_t *avl_tree;
2663 uu_avl_walk_t *walk;
2664 char *delim;
2665 char deffields[] = "type,name,used,quota";
2666 char *ofield = NULL;
2667 char *tfield = NULL;
2668 int cfield = 0;
2669 int fields[256];
2670 int i;
2671 boolean_t scripted = B_FALSE;
2672 boolean_t prtnum = B_FALSE;
2673 boolean_t parsable = B_FALSE;
2674 boolean_t sid2posix = B_FALSE;
2675 int ret = 0;
2676 int c;
2677 zfs_sort_column_t *sortcol = NULL;
2678 int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2679 us_cbdata_t cb;
2680 us_node_t *node;
2681 us_node_t *rmnode;
2682 uu_list_pool_t *listpool;
2683 uu_list_t *list;
2684 uu_avl_index_t idx = 0;
2685 uu_list_index_t idx2 = 0;
2686
2687 if (argc < 2)
2688 usage(B_FALSE);
2689
2690 if (strcmp(argv[0], "groupspace") == 0)
2691 /* Toggle default group types */
2692 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2693
2694 while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2695 switch (c) {
2696 case 'n':
2697 prtnum = B_TRUE;
2698 break;
2699 case 'H':
2700 scripted = B_TRUE;
2701 break;
2702 case 'p':
2703 parsable = B_TRUE;
2704 break;
2705 case 'o':
2706 ofield = optarg;
2707 break;
2708 case 's':
2709 case 'S':
2710 if (zfs_add_sort_column(&sortcol, optarg,
2711 c == 's' ? B_FALSE : B_TRUE) != 0) {
2712 (void) fprintf(stderr,
2713 gettext("invalid field '%s'\n"), optarg);
2714 usage(B_FALSE);
2715 }
2716 break;
2717 case 't':
2718 tfield = optarg;
2719 break;
2720 case 'i':
2721 sid2posix = B_TRUE;
2722 break;
2723 case ':':
2724 (void) fprintf(stderr, gettext("missing argument for "
2725 "'%c' option\n"), optopt);
2726 usage(B_FALSE);
2727 break;
2728 case '?':
2729 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2730 optopt);
2731 usage(B_FALSE);
2732 }
2733 }
2734
2735 argc -= optind;
2736 argv += optind;
2737
2738 if (argc < 1) {
2739 (void) fprintf(stderr, gettext("missing dataset name\n"));
2740 usage(B_FALSE);
2741 }
2742 if (argc > 1) {
2743 (void) fprintf(stderr, gettext("too many arguments\n"));
2744 usage(B_FALSE);
2745 }
2746
2747 /* Use default output fields if not specified using -o */
2748 if (ofield == NULL)
2749 ofield = deffields;
2750 do {
2751 if ((delim = strchr(ofield, ',')) != NULL)
2752 *delim = '\0';
2753 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
2754 (void) fprintf(stderr, gettext("invalid type '%s' "
2755 "for -o option\n"), ofield);
2756 return (-1);
2757 }
2758 if (delim != NULL)
2759 ofield = delim + 1;
2760 } while (delim != NULL);
2761 fields[cfield] = USFIELD_LAST;
2762
2763 /* Override output types (-t option) */
2764 if (tfield != NULL) {
2765 types = 0;
2766
2767 do {
2768 boolean_t found = B_FALSE;
2769
2770 if ((delim = strchr(tfield, ',')) != NULL)
2771 *delim = '\0';
2772 for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
2773 i++) {
2774 if (strcmp(tfield, us_type_names[i]) == 0) {
2775 found = B_TRUE;
2776 types |= us_type_bits[i];
2777 break;
2778 }
2779 }
2780 if (!found) {
2781 (void) fprintf(stderr, gettext("invalid type "
2782 "'%s' for -t option\n"), tfield);
2783 return (-1);
2784 }
2785 if (delim != NULL)
2786 tfield = delim + 1;
2787 } while (delim != NULL);
2788 }
2789
2790 if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
2791 return (1);
2792
2793 if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
2794 offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
2795 nomem();
2796 if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
2797 nomem();
2798
2799 /* Always add default sorting columns */
2800 (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
2801 (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
2802
2803 cb.cb_sortcol = sortcol;
2804 cb.cb_numname = prtnum;
2805 cb.cb_nicenum = !parsable;
2806 cb.cb_avl_pool = avl_pool;
2807 cb.cb_avl = avl_tree;
2808 cb.cb_sid2posix = sid2posix;
2809
2810 for (i = 0; i < USFIELD_LAST; i++)
2811 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
2812
2813 for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
2814 if (((p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA) &&
2815 !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
2816 ((p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA) &&
2817 !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))))
2818 continue;
2819 cb.cb_prop = p;
2820 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
2821 return (ret);
2822 }
2823
2824 /* Sort the list */
2825 if ((node = uu_avl_first(avl_tree)) == NULL)
2826 return (0);
2827
2828 us_populated = B_TRUE;
2829
2830 listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
2831 offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
2832 list = uu_list_create(listpool, NULL, UU_DEFAULT);
2833 uu_list_node_init(node, &node->usn_listnode, listpool);
2834
2835 while (node != NULL) {
2836 rmnode = node;
2837 node = uu_avl_next(avl_tree, node);
2838 uu_avl_remove(avl_tree, rmnode);
2839 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
2840 uu_list_insert(list, rmnode, idx2);
2841 }
2842
2843 for (node = uu_list_first(list); node != NULL;
2844 node = uu_list_next(list, node)) {
2845 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
2846
2847 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
2848 uu_avl_insert(avl_tree, node, idx);
2849 }
2850
2851 uu_list_destroy(list);
2852 uu_list_pool_destroy(listpool);
2853
2854 /* Print and free node nvlist memory */
2855 print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
2856 cb.cb_avl);
2857
2858 zfs_free_sort_columns(sortcol);
2859
2860 /* Clean up the AVL tree */
2861 if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
2862 nomem();
2863
2864 while ((node = uu_avl_walk_next(walk)) != NULL) {
2865 uu_avl_remove(cb.cb_avl, node);
2866 free(node);
2867 }
2868
2869 uu_avl_walk_end(walk);
2870 uu_avl_destroy(avl_tree);
2871 uu_avl_pool_destroy(avl_pool);
2872
2873 return (ret);
2874 }
2875
2876 /*
2877 * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property] ...
2878 * [-t type[,...]] [filesystem|volume|snapshot] ...
2879 *
2880 * -H Scripted mode; elide headers and separate columns by tabs.
2881 * -p Display values in parsable (literal) format.
2882 * -r Recurse over all children.
2883 * -d Limit recursion by depth.
2884 * -o Control which fields to display.
2885 * -s Specify sort columns, descending order.
2886 * -S Specify sort columns, ascending order.
2887 * -t Control which object types to display.
2888 *
2889 * When given no arguments, list all filesystems in the system.
2890 * Otherwise, list the specified datasets, optionally recursing down them if
2891 * '-r' is specified.
2892 */
2893 typedef struct list_cbdata {
2894 boolean_t cb_first;
2895 boolean_t cb_literal;
2896 boolean_t cb_scripted;
2897 zprop_list_t *cb_proplist;
2898 } list_cbdata_t;
2899
2900 /*
2901 * Given a list of columns to display, output appropriate headers for each one.
2902 */
2903 static void
2904 print_header(list_cbdata_t *cb)
2905 {
2906 zprop_list_t *pl = cb->cb_proplist;
2907 char headerbuf[ZFS_MAXPROPLEN];
2908 const char *header;
2909 int i;
2910 boolean_t first = B_TRUE;
2911 boolean_t right_justify;
2912
2913 for (; pl != NULL; pl = pl->pl_next) {
2914 if (!first) {
2915 (void) printf(" ");
2916 } else {
2917 first = B_FALSE;
2918 }
2919
2920 right_justify = B_FALSE;
2921 if (pl->pl_prop != ZPROP_INVAL) {
2922 header = zfs_prop_column_name(pl->pl_prop);
2923 right_justify = zfs_prop_align_right(pl->pl_prop);
2924 } else {
2925 for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
2926 headerbuf[i] = toupper(pl->pl_user_prop[i]);
2927 headerbuf[i] = '\0';
2928 header = headerbuf;
2929 }
2930
2931 if (pl->pl_next == NULL && !right_justify)
2932 (void) printf("%s", header);
2933 else if (right_justify)
2934 (void) printf("%*s", pl->pl_width, header);
2935 else
2936 (void) printf("%-*s", pl->pl_width, header);
2937 }
2938
2939 (void) printf("\n");
2940 }
2941
2942 /*
2943 * Given a dataset and a list of fields, print out all the properties according
2944 * to the described layout.
2945 */
2946 static void
2947 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
2948 {
2949 zprop_list_t *pl = cb->cb_proplist;
2950 boolean_t first = B_TRUE;
2951 char property[ZFS_MAXPROPLEN];
2952 nvlist_t *userprops = zfs_get_user_props(zhp);
2953 nvlist_t *propval;
2954 char *propstr;
2955 boolean_t right_justify;
2956
2957 for (; pl != NULL; pl = pl->pl_next) {
2958 if (!first) {
2959 if (cb->cb_scripted)
2960 (void) printf("\t");
2961 else
2962 (void) printf(" ");
2963 } else {
2964 first = B_FALSE;
2965 }
2966
2967 if (pl->pl_prop != ZPROP_INVAL) {
2968 if (zfs_prop_get(zhp, pl->pl_prop, property,
2969 sizeof (property), NULL, NULL, 0,
2970 cb->cb_literal) != 0)
2971 propstr = "-";
2972 else
2973 propstr = property;
2974 right_justify = zfs_prop_align_right(pl->pl_prop);
2975 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
2976 if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
2977 property, sizeof (property), cb->cb_literal) != 0)
2978 propstr = "-";
2979 else
2980 propstr = property;
2981 right_justify = B_TRUE;
2982 } else if (zfs_prop_written(pl->pl_user_prop)) {
2983 if (zfs_prop_get_written(zhp, pl->pl_user_prop,
2984 property, sizeof (property), cb->cb_literal) != 0)
2985 propstr = "-";
2986 else
2987 propstr = property;
2988 right_justify = B_TRUE;
2989 } else {
2990 if (nvlist_lookup_nvlist(userprops,
2991 pl->pl_user_prop, &propval) != 0)
2992 propstr = "-";
2993 else
2994 verify(nvlist_lookup_string(propval,
2995 ZPROP_VALUE, &propstr) == 0);
2996 right_justify = B_FALSE;
2997 }
2998
2999 /*
3000 * If this is being called in scripted mode, or if this is the
3001 * last column and it is left-justified, don't include a width
3002 * format specifier.
3003 */
3004 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
3005 (void) printf("%s", propstr);
3006 else if (right_justify)
3007 (void) printf("%*s", pl->pl_width, propstr);
3008 else
3009 (void) printf("%-*s", pl->pl_width, propstr);
3010 }
3011
3012 (void) printf("\n");
3013 }
3014
3015 /*
3016 * Generic callback function to list a dataset or snapshot.
3017 */
3018 static int
3019 list_callback(zfs_handle_t *zhp, void *data)
3020 {
3021 list_cbdata_t *cbp = data;
3022
3023 if (cbp->cb_first) {
3024 if (!cbp->cb_scripted)
3025 print_header(cbp);
3026 cbp->cb_first = B_FALSE;
3027 }
3028
3029 print_dataset(zhp, cbp);
3030
3031 return (0);
3032 }
3033
3034 static int
3035 zfs_do_list(int argc, char **argv)
3036 {
3037 int c;
3038 static char default_fields[] =
3039 "name,used,available,referenced,mountpoint";
3040 int types = ZFS_TYPE_DATASET;
3041 boolean_t types_specified = B_FALSE;
3042 char *fields = NULL;
3043 list_cbdata_t cb = { 0 };
3044 char *value;
3045 int limit = 0;
3046 int ret = 0;
3047 zfs_sort_column_t *sortcol = NULL;
3048 int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3049
3050 /* check options */
3051 while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3052 switch (c) {
3053 case 'o':
3054 fields = optarg;
3055 break;
3056 case 'p':
3057 cb.cb_literal = B_TRUE;
3058 flags |= ZFS_ITER_LITERAL_PROPS;
3059 break;
3060 case 'd':
3061 limit = parse_depth(optarg, &flags);
3062 break;
3063 case 'r':
3064 flags |= ZFS_ITER_RECURSE;
3065 break;
3066 case 'H':
3067 cb.cb_scripted = B_TRUE;
3068 break;
3069 case 's':
3070 if (zfs_add_sort_column(&sortcol, optarg,
3071 B_FALSE) != 0) {
3072 (void) fprintf(stderr,
3073 gettext("invalid property '%s'\n"), optarg);
3074 usage(B_FALSE);
3075 }
3076 break;
3077 case 'S':
3078 if (zfs_add_sort_column(&sortcol, optarg,
3079 B_TRUE) != 0) {
3080 (void) fprintf(stderr,
3081 gettext("invalid property '%s'\n"), optarg);
3082 usage(B_FALSE);
3083 }
3084 break;
3085 case 't':
3086 types = 0;
3087 types_specified = B_TRUE;
3088 flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3089 while (*optarg != '\0') {
3090 static char *type_subopts[] = { "filesystem",
3091 "volume", "snapshot", "snap", "bookmark",
3092 "all", NULL };
3093
3094 switch (getsubopt(&optarg, type_subopts,
3095 &value)) {
3096 case 0:
3097 types |= ZFS_TYPE_FILESYSTEM;
3098 break;
3099 case 1:
3100 types |= ZFS_TYPE_VOLUME;
3101 break;
3102 case 2:
3103 case 3:
3104 types |= ZFS_TYPE_SNAPSHOT;
3105 break;
3106 case 4:
3107 types |= ZFS_TYPE_BOOKMARK;
3108 break;
3109 case 5:
3110 types = ZFS_TYPE_DATASET |
3111 ZFS_TYPE_BOOKMARK;
3112 break;
3113 default:
3114 (void) fprintf(stderr,
3115 gettext("invalid type '%s'\n"),
3116 value);
3117 usage(B_FALSE);
3118 }
3119 }
3120 break;
3121 case ':':
3122 (void) fprintf(stderr, gettext("missing argument for "
3123 "'%c' option\n"), optopt);
3124 usage(B_FALSE);
3125 break;
3126 case '?':
3127 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3128 optopt);
3129 usage(B_FALSE);
3130 }
3131 }
3132
3133 argc -= optind;
3134 argv += optind;
3135
3136 if (fields == NULL)
3137 fields = default_fields;
3138
3139 /*
3140 * If "-o space" and no types were specified, don't display snapshots.
3141 */
3142 if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3143 types &= ~ZFS_TYPE_SNAPSHOT;
3144
3145 /*
3146 * If the user specifies '-o all', the zprop_get_list() doesn't
3147 * normally include the name of the dataset. For 'zfs list', we always
3148 * want this property to be first.
3149 */
3150 if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3151 != 0)
3152 usage(B_FALSE);
3153
3154 cb.cb_first = B_TRUE;
3155
3156 ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3157 limit, list_callback, &cb);
3158
3159 zprop_free_list(cb.cb_proplist);
3160 zfs_free_sort_columns(sortcol);
3161
3162 if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3163 (void) printf(gettext("no datasets available\n"));
3164
3165 return (ret);
3166 }
3167
3168 /*
3169 * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3170 * zfs rename [-f] -p <fs | vol> <fs | vol>
3171 * zfs rename -r <snap> <snap>
3172 *
3173 * Renames the given dataset to another of the same type.
3174 *
3175 * The '-p' flag creates all the non-existing ancestors of the target first.
3176 */
3177 /* ARGSUSED */
3178 static int
3179 zfs_do_rename(int argc, char **argv)
3180 {
3181 zfs_handle_t *zhp;
3182 int c;
3183 int ret = 0;
3184 boolean_t recurse = B_FALSE;
3185 boolean_t parents = B_FALSE;
3186 boolean_t force_unmount = B_FALSE;
3187
3188 /* check options */
3189 while ((c = getopt(argc, argv, "prf")) != -1) {
3190 switch (c) {
3191 case 'p':
3192 parents = B_TRUE;
3193 break;
3194 case 'r':
3195 recurse = B_TRUE;
3196 break;
3197 case 'f':
3198 force_unmount = B_TRUE;
3199 break;
3200 case '?':
3201 default:
3202 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3203 optopt);
3204 usage(B_FALSE);
3205 }
3206 }
3207
3208 argc -= optind;
3209 argv += optind;
3210
3211 /* check number of arguments */
3212 if (argc < 1) {
3213 (void) fprintf(stderr, gettext("missing source dataset "
3214 "argument\n"));
3215 usage(B_FALSE);
3216 }
3217 if (argc < 2) {
3218 (void) fprintf(stderr, gettext("missing target dataset "
3219 "argument\n"));
3220 usage(B_FALSE);
3221 }
3222 if (argc > 2) {
3223 (void) fprintf(stderr, gettext("too many arguments\n"));
3224 usage(B_FALSE);
3225 }
3226
3227 if (recurse && parents) {
3228 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3229 "exclusive\n"));
3230 usage(B_FALSE);
3231 }
3232
3233 if (recurse && strchr(argv[0], '@') == 0) {
3234 (void) fprintf(stderr, gettext("source dataset for recursive "
3235 "rename must be a snapshot\n"));
3236 usage(B_FALSE);
3237 }
3238
3239 if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM |
3240 ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL)
3241 return (1);
3242
3243 /* If we were asked and the name looks good, try to create ancestors. */
3244 if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3245 zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3246 zfs_close(zhp);
3247 return (1);
3248 }
3249
3250 ret = (zfs_rename(zhp, argv[1], recurse, force_unmount) != 0);
3251
3252 zfs_close(zhp);
3253 return (ret);
3254 }
3255
3256 /*
3257 * zfs promote <fs>
3258 *
3259 * Promotes the given clone fs to be the parent
3260 */
3261 /* ARGSUSED */
3262 static int
3263 zfs_do_promote(int argc, char **argv)
3264 {
3265 zfs_handle_t *zhp;
3266 int ret = 0;
3267
3268 /* check options */
3269 if (argc > 1 && argv[1][0] == '-') {
3270 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3271 argv[1][1]);
3272 usage(B_FALSE);
3273 }
3274
3275 /* check number of arguments */
3276 if (argc < 2) {
3277 (void) fprintf(stderr, gettext("missing clone filesystem"
3278 " argument\n"));
3279 usage(B_FALSE);
3280 }
3281 if (argc > 2) {
3282 (void) fprintf(stderr, gettext("too many arguments\n"));
3283 usage(B_FALSE);
3284 }
3285
3286 zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3287 if (zhp == NULL)
3288 return (1);
3289
3290 ret = (zfs_promote(zhp) != 0);
3291
3292
3293 zfs_close(zhp);
3294 return (ret);
3295 }
3296
3297 /*
3298 * zfs rollback [-rRf] <snapshot>
3299 *
3300 * -r Delete any intervening snapshots before doing rollback
3301 * -R Delete any snapshots and their clones
3302 * -f ignored for backwards compatability
3303 *
3304 * Given a filesystem, rollback to a specific snapshot, discarding any changes
3305 * since then and making it the active dataset. If more recent snapshots exist,
3306 * the command will complain unless the '-r' flag is given.
3307 */
3308 typedef struct rollback_cbdata {
3309 uint64_t cb_create;
3310 boolean_t cb_first;
3311 int cb_doclones;
3312 char *cb_target;
3313 int cb_error;
3314 boolean_t cb_recurse;
3315 } rollback_cbdata_t;
3316
3317 static int
3318 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3319 {
3320 rollback_cbdata_t *cbp = data;
3321
3322 if (cbp->cb_first && cbp->cb_recurse) {
3323 (void) fprintf(stderr, gettext("cannot rollback to "
3324 "'%s': clones of previous snapshots exist\n"),
3325 cbp->cb_target);
3326 (void) fprintf(stderr, gettext("use '-R' to "
3327 "force deletion of the following clones and "
3328 "dependents:\n"));
3329 cbp->cb_first = 0;
3330 cbp->cb_error = 1;
3331 }
3332
3333 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3334
3335 zfs_close(zhp);
3336 return (0);
3337 }
3338
3339 /*
3340 * Report any snapshots more recent than the one specified. Used when '-r' is
3341 * not specified. We reuse this same callback for the snapshot dependents - if
3342 * 'cb_dependent' is set, then this is a dependent and we should report it
3343 * without checking the transaction group.
3344 */
3345 static int
3346 rollback_check(zfs_handle_t *zhp, void *data)
3347 {
3348 rollback_cbdata_t *cbp = data;
3349
3350 if (cbp->cb_doclones) {
3351 zfs_close(zhp);
3352 return (0);
3353 }
3354
3355 if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3356 if (cbp->cb_first && !cbp->cb_recurse) {
3357 (void) fprintf(stderr, gettext("cannot "
3358 "rollback to '%s': more recent snapshots "
3359 "or bookmarks exist\n"),
3360 cbp->cb_target);
3361 (void) fprintf(stderr, gettext("use '-r' to "
3362 "force deletion of the following "
3363 "snapshots and bookmarks:\n"));
3364 cbp->cb_first = 0;
3365 cbp->cb_error = 1;
3366 }
3367
3368 if (cbp->cb_recurse) {
3369 if (zfs_iter_dependents(zhp, B_TRUE,
3370 rollback_check_dependent, cbp) != 0) {
3371 zfs_close(zhp);
3372 return (-1);
3373 }
3374 } else {
3375 (void) fprintf(stderr, "%s\n",
3376 zfs_get_name(zhp));
3377 }
3378 }
3379 zfs_close(zhp);
3380 return (0);
3381 }
3382
3383 static int
3384 zfs_do_rollback(int argc, char **argv)
3385 {
3386 int ret = 0;
3387 int c;
3388 boolean_t force = B_FALSE;
3389 rollback_cbdata_t cb = { 0 };
3390 zfs_handle_t *zhp, *snap;
3391 char parentname[ZFS_MAXNAMELEN];
3392 char *delim;
3393
3394 /* check options */
3395 while ((c = getopt(argc, argv, "rRf")) != -1) {
3396 switch (c) {
3397 case 'r':
3398 cb.cb_recurse = 1;
3399 break;
3400 case 'R':
3401 cb.cb_recurse = 1;
3402 cb.cb_doclones = 1;
3403 break;
3404 case 'f':
3405 force = B_TRUE;
3406 break;
3407 case '?':
3408 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3409 optopt);
3410 usage(B_FALSE);
3411 }
3412 }
3413
3414 argc -= optind;
3415 argv += optind;
3416
3417 /* check number of arguments */
3418 if (argc < 1) {
3419 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3420 usage(B_FALSE);
3421 }
3422 if (argc > 1) {
3423 (void) fprintf(stderr, gettext("too many arguments\n"));
3424 usage(B_FALSE);
3425 }
3426
3427 /* open the snapshot */
3428 if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3429 return (1);
3430
3431 /* open the parent dataset */
3432 (void) strlcpy(parentname, argv[0], sizeof (parentname));
3433 verify((delim = strrchr(parentname, '@')) != NULL);
3434 *delim = '\0';
3435 if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3436 zfs_close(snap);
3437 return (1);
3438 }
3439
3440 /*
3441 * Check for more recent snapshots and/or clones based on the presence
3442 * of '-r' and '-R'.
3443 */
3444 cb.cb_target = argv[0];
3445 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3446 cb.cb_first = B_TRUE;
3447 cb.cb_error = 0;
3448 if ((ret = zfs_iter_snapshots(zhp, rollback_check, &cb)) != 0)
3449 goto out;
3450 if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
3451 goto out;
3452
3453 if ((ret = cb.cb_error) != 0)
3454 goto out;
3455
3456 /*
3457 * Rollback parent to the given snapshot.
3458 */
3459 ret = zfs_rollback(zhp, snap, force);
3460
3461 out:
3462 zfs_close(snap);
3463 zfs_close(zhp);
3464
3465 if (ret == 0)
3466 return (0);
3467 else
3468 return (1);
3469 }
3470
3471 /*
3472 * zfs set property=value ... { fs | snap | vol } ...
3473 *
3474 * Sets the given properties for all datasets specified on the command line.
3475 */
3476
3477 static int
3478 set_callback(zfs_handle_t *zhp, void *data)
3479 {
3480 nvlist_t *props = data;
3481
3482 if (zfs_prop_set_list(zhp, props) != 0) {
3483 switch (libzfs_errno(g_zfs)) {
3484 case EZFS_MOUNTFAILED:
3485 (void) fprintf(stderr, gettext("property may be set "
3486 "but unable to remount filesystem\n"));
3487 break;
3488 case EZFS_SHARENFSFAILED:
3489 (void) fprintf(stderr, gettext("property may be set "
3490 "but unable to reshare filesystem\n"));
3491 break;
3492 }
3493 return (1);
3494 }
3495 return (0);
3496 }
3497
3498 static int
3499 zfs_do_set(int argc, char **argv)
3500 {
3501 nvlist_t *props = NULL;
3502 int ds_start = -1; /* argv idx of first dataset arg */
3503 int ret = 0;
3504
3505 /* check for options */
3506 if (argc > 1 && argv[1][0] == '-') {
3507 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3508 argv[1][1]);
3509 usage(B_FALSE);
3510 }
3511
3512 /* check number of arguments */
3513 if (argc < 2) {
3514 (void) fprintf(stderr, gettext("missing arguments\n"));
3515 usage(B_FALSE);
3516 }
3517 if (argc < 3) {
3518 if (strchr(argv[1], '=') == NULL) {
3519 (void) fprintf(stderr, gettext("missing property=value "
3520 "argument(s)\n"));
3521 } else {
3522 (void) fprintf(stderr, gettext("missing dataset "
3523 "name(s)\n"));
3524 }
3525 usage(B_FALSE);
3526 }
3527
3528 /* validate argument order: prop=val args followed by dataset args */
3529 for (int i = 1; i < argc; i++) {
3530 if (strchr(argv[i], '=') != NULL) {
3531 if (ds_start > 0) {
3532 /* out-of-order prop=val argument */
3533 (void) fprintf(stderr, gettext("invalid "
3534 "argument order\n"), i);
3535 usage(B_FALSE);
3536 }
3537 } else if (ds_start < 0) {
3538 ds_start = i;
3539 }
3540 }
3541 if (ds_start < 0) {
3542 (void) fprintf(stderr, gettext("missing dataset name(s)\n"));
3543 usage(B_FALSE);
3544 }
3545
3546 /* Populate a list of property settings */
3547 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3548 nomem();
3549 for (int i = 1; i < ds_start; i++) {
3550 if ((ret = parseprop(props, argv[i])) != 0)
3551 goto error;
3552 }
3553
3554 ret = zfs_for_each(argc - ds_start, argv + ds_start, 0,
3555 ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, props);
3556
3557 error:
3558 nvlist_free(props);
3559 return (ret);
3560 }
3561
3562 typedef struct snap_cbdata {
3563 nvlist_t *sd_nvl;
3564 boolean_t sd_recursive;
3565 const char *sd_snapname;
3566 } snap_cbdata_t;
3567
3568 static int
3569 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3570 {
3571 snap_cbdata_t *sd = arg;
3572 char *name;
3573 int rv = 0;
3574 int error;
3575
3576 if (sd->sd_recursive &&
3577 zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3578 zfs_close(zhp);
3579 return (0);
3580 }
3581
3582 error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3583 if (error == -1)
3584 nomem();
3585 fnvlist_add_boolean(sd->sd_nvl, name);
3586 free(name);
3587
3588 if (sd->sd_recursive)
3589 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3590 zfs_close(zhp);
3591 return (rv);
3592 }
3593
3594 /*
3595 * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3596 *
3597 * Creates a snapshot with the given name. While functionally equivalent to
3598 * 'zfs create', it is a separate command to differentiate intent.
3599 */
3600 static int
3601 zfs_do_snapshot(int argc, char **argv)
3602 {
3603 int ret = 0;
3604 char c;
3605 nvlist_t *props;
3606 snap_cbdata_t sd = { 0 };
3607 boolean_t multiple_snaps = B_FALSE;
3608
3609 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3610 nomem();
3611 if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3612 nomem();
3613
3614 /* check options */
3615 while ((c = getopt(argc, argv, "ro:")) != -1) {
3616 switch (c) {
3617 case 'o':
3618 if (parseprop(props, optarg) != 0)
3619 return (1);
3620 break;
3621 case 'r':
3622 sd.sd_recursive = B_TRUE;
3623 multiple_snaps = B_TRUE;
3624 break;
3625 case '?':
3626 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3627 optopt);
3628 goto usage;
3629 }
3630 }
3631
3632 argc -= optind;
3633 argv += optind;
3634
3635 /* check number of arguments */
3636 if (argc < 1) {
3637 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3638 goto usage;
3639 }
3640
3641 if (argc > 1)
3642 multiple_snaps = B_TRUE;
3643 for (; argc > 0; argc--, argv++) {
3644 char *atp;
3645 zfs_handle_t *zhp;
3646
3647 atp = strchr(argv[0], '@');
3648 if (atp == NULL)
3649 goto usage;
3650 *atp = '\0';
3651 sd.sd_snapname = atp + 1;
3652 zhp = zfs_open(g_zfs, argv[0],
3653 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3654 if (zhp == NULL)
3655 goto usage;
3656 if (zfs_snapshot_cb(zhp, &sd) != 0)
3657 goto usage;
3658 }
3659
3660 ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3661 nvlist_free(sd.sd_nvl);
3662 nvlist_free(props);
3663 if (ret != 0 && multiple_snaps)
3664 (void) fprintf(stderr, gettext("no snapshots were created\n"));
3665 return (ret != 0);
3666
3667 usage:
3668 nvlist_free(sd.sd_nvl);
3669 nvlist_free(props);
3670 usage(B_FALSE);
3671 return (-1);
3672 }
3673
3674 /*
3675 * Send a backup stream to stdout.
3676 */
3677 static int
3678 zfs_do_send(int argc, char **argv)
3679 {
3680 char *fromname = NULL;
3681 char *toname = NULL;
3682 char *resume_token = NULL;
3683 char *cp;
3684 zfs_handle_t *zhp;
3685 sendflags_t flags = { 0 };
3686 int c, err;
3687 nvlist_t *dbgnv = NULL;
3688 boolean_t extraverbose = B_FALSE;
3689
3690 /* check options */
3691 while ((c = getopt(argc, argv, ":i:I:RDpvnPLet:F")) != -1) {
3692 switch (c) {
3693 case 'i':
3694 if (fromname)
3695 usage(B_FALSE);
3696 fromname = optarg;
3697 break;
3698 case 'I':
3699 if (fromname)
3700 usage(B_FALSE);
3701 fromname = optarg;
3702 flags.doall = B_TRUE;
3703 break;
3704 case 'R':
3705 flags.replicate = B_TRUE;
3706 break;
3707 case 'p':
3708 flags.props = B_TRUE;
3709 break;
3710 case 'P':
3711 flags.parsable = B_TRUE;
3712 flags.verbose = B_TRUE;
3713 break;
3714 case 'v':
3715 if (flags.verbose)
3716 extraverbose = B_TRUE;
3717 flags.verbose = B_TRUE;
3718 flags.progress = B_TRUE;
3719 break;
3720 case 'D':
3721 flags.dedup = B_TRUE;
3722 break;
3723 case 'n':
3724 flags.dryrun = B_TRUE;
3725 break;
3726 case 'L':
3727 flags.largeblock = B_TRUE;
3728 break;
3729 case 'e':
3730 flags.embed_data = B_TRUE;
3731 break;
3732 case 't':
3733 resume_token = optarg;
3734 break;
3735 case 'F':
3736 flags.skip_free = B_TRUE;
3737 break;
3738 case ':':
3739 (void) fprintf(stderr, gettext("missing argument for "
3740 "'%c' option\n"), optopt);
3741 usage(B_FALSE);
3742 break;
3743 case '?':
3744 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3745 optopt);
3746 usage(B_FALSE);
3747 }
3748 }
3749
3750 argc -= optind;
3751 argv += optind;
3752
3753 if (resume_token != NULL) {
3754 if (fromname != NULL || flags.replicate || flags.props ||
3755 flags.dedup) {
3756 (void) fprintf(stderr,
3757 gettext("invalid flags combined with -t\n"));
3758 usage(B_FALSE);
3759 }
3760 if (argc != 0) {
3761 (void) fprintf(stderr, gettext("no additional "
3762 "arguments are permitted with -t\n"));
3763 usage(B_FALSE);
3764 }
3765 } else {
3766 if (argc < 1) {
3767 (void) fprintf(stderr,
3768 gettext("missing snapshot argument\n"));
3769 usage(B_FALSE);
3770 }
3771 if (argc > 1) {
3772 (void) fprintf(stderr, gettext("too many arguments\n"));
3773 usage(B_FALSE);
3774 }
3775 }
3776
3777 if (!flags.dryrun && isatty(STDOUT_FILENO)) {
3778 (void) fprintf(stderr,
3779 gettext("Error: Stream can not be written to a terminal.\n"
3780 "You must redirect standard output.\n"));
3781 return (1);
3782 }
3783
3784 if (resume_token != NULL) {
3785 return (zfs_send_resume(g_zfs, &flags, STDOUT_FILENO,
3786 resume_token));
3787 }
3788
3789 /*
3790 * Special case sending a filesystem, or from a bookmark.
3791 */
3792 if (strchr(argv[0], '@') == NULL ||
3793 (fromname && strchr(fromname, '#') != NULL)) {
3794 char frombuf[ZFS_MAXNAMELEN];
3795 enum lzc_send_flags lzc_flags = 0;
3796
3797 if (flags.replicate || flags.doall || flags.props ||
3798 flags.dedup || flags.dryrun || flags.verbose ||
3799 flags.progress) {
3800 (void) fprintf(stderr,
3801 gettext("Error: "
3802 "Unsupported flag with filesystem or bookmark.\n"));
3803 return (1);
3804 }
3805
3806 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
3807 if (zhp == NULL)
3808 return (1);
3809
3810 if (flags.largeblock)
3811 lzc_flags |= LZC_SEND_FLAG_LARGE_BLOCK;
3812 if (flags.embed_data)
3813 lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
3814
3815 if (fromname != NULL &&
3816 (fromname[0] == '#' || fromname[0] == '@')) {
3817 /*
3818 * Incremental source name begins with # or @.
3819 * Default to same fs as target.
3820 */
3821 (void) strncpy(frombuf, argv[0], sizeof (frombuf));
3822 cp = strchr(frombuf, '@');
3823 if (cp != NULL)
3824 *cp = '\0';
3825 (void) strlcat(frombuf, fromname, sizeof (frombuf));
3826 fromname = frombuf;
3827 }
3828 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, lzc_flags);
3829 zfs_close(zhp);
3830 return (err != 0);
3831 }
3832
3833 cp = strchr(argv[0], '@');
3834 *cp = '\0';
3835 toname = cp + 1;
3836 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3837 if (zhp == NULL)
3838 return (1);
3839
3840 /*
3841 * If they specified the full path to the snapshot, chop off
3842 * everything except the short name of the snapshot, but special
3843 * case if they specify the origin.
3844 */
3845 if (fromname && (cp = strchr(fromname, '@')) != NULL) {
3846 char origin[ZFS_MAXNAMELEN];
3847 zprop_source_t src;
3848
3849 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
3850 origin, sizeof (origin), &src, NULL, 0, B_FALSE);
3851
3852 if (strcmp(origin, fromname) == 0) {
3853 fromname = NULL;
3854 flags.fromorigin = B_TRUE;
3855 } else {
3856 *cp = '\0';
3857 if (cp != fromname && strcmp(argv[0], fromname)) {
3858 (void) fprintf(stderr,
3859 gettext("incremental source must be "
3860 "in same filesystem\n"));
3861 usage(B_FALSE);
3862 }
3863 fromname = cp + 1;
3864 if (strchr(fromname, '@') || strchr(fromname, '/')) {
3865 (void) fprintf(stderr,
3866 gettext("invalid incremental source\n"));
3867 usage(B_FALSE);
3868 }
3869 }
3870 }
3871
3872 if (flags.replicate && fromname == NULL)
3873 flags.doall = B_TRUE;
3874
3875 err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
3876 extraverbose ? &dbgnv : NULL);
3877
3878 if (extraverbose && dbgnv != NULL) {
3879 /*
3880 * dump_nvlist prints to stdout, but that's been
3881 * redirected to a file. Make it print to stderr
3882 * instead.
3883 */
3884 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
3885 dump_nvlist(dbgnv, 0);
3886 nvlist_free(dbgnv);
3887 }
3888 zfs_close(zhp);
3889
3890 return (err != 0);
3891 }
3892
3893 /*
3894 * Restore a backup stream from stdin.
3895 */
3896 static int
3897 zfs_do_receive(int argc, char **argv)
3898 {
3899 int c, err;
3900 recvflags_t flags = { 0 };
3901 boolean_t abort_resumable = B_FALSE;
3902
3903 nvlist_t *props;
3904 nvpair_t *nvp = NULL;
3905
3906 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3907 nomem();
3908
3909 /* check options */
3910 while ((c = getopt(argc, argv, ":o:denuvFsA")) != -1) {
3911 switch (c) {
3912 case 'o':
3913 if (parseprop(props, optarg) != 0)
3914 return (1);
3915 break;
3916 case 'd':
3917 flags.isprefix = B_TRUE;
3918 break;
3919 case 'e':
3920 flags.isprefix = B_TRUE;
3921 flags.istail = B_TRUE;
3922 break;
3923 case 'n':
3924 flags.dryrun = B_TRUE;
3925 break;
3926 case 'u':
3927 flags.nomount = B_TRUE;
3928 break;
3929 case 'v':
3930 flags.verbose = B_TRUE;
3931 break;
3932 case 's':
3933 flags.resumable = B_TRUE;
3934 break;
3935 case 'F':
3936 flags.force = B_TRUE;
3937 break;
3938 case 'A':
3939 abort_resumable = B_TRUE;
3940 break;
3941 case ':':
3942 (void) fprintf(stderr, gettext("missing argument for "
3943 "'%c' option\n"), optopt);
3944 usage(B_FALSE);
3945 break;
3946 case '?':
3947 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3948 optopt);
3949 usage(B_FALSE);
3950 }
3951 }
3952
3953 argc -= optind;
3954 argv += optind;
3955
3956 /* check number of arguments */
3957 if (argc < 1) {
3958 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3959 usage(B_FALSE);
3960 }
3961 if (argc > 1) {
3962 (void) fprintf(stderr, gettext("too many arguments\n"));
3963 usage(B_FALSE);
3964 }
3965
3966 while ((nvp = nvlist_next_nvpair(props, nvp))) {
3967 if (strcmp(nvpair_name(nvp), "origin") != 0) {
3968 (void) fprintf(stderr, gettext("invalid option"));
3969 usage(B_FALSE);
3970 }
3971 }
3972
3973 if (abort_resumable) {
3974 if (flags.isprefix || flags.istail || flags.dryrun ||
3975 flags.resumable || flags.nomount) {
3976 (void) fprintf(stderr, gettext("invalid option"));
3977 usage(B_FALSE);
3978 }
3979
3980 char namebuf[ZFS_MAXNAMELEN];
3981 (void) snprintf(namebuf, sizeof (namebuf),
3982 "%s/%%recv", argv[0]);
3983
3984 if (zfs_dataset_exists(g_zfs, namebuf,
3985 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) {
3986 zfs_handle_t *zhp = zfs_open(g_zfs,
3987 namebuf, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3988 if (zhp == NULL)
3989 return (1);
3990 err = zfs_destroy(zhp, B_FALSE);
3991 } else {
3992 zfs_handle_t *zhp = zfs_open(g_zfs,
3993 argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3994 if (zhp == NULL)
3995 usage(B_FALSE);
3996 if (!zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) ||
3997 zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
3998 NULL, 0, NULL, NULL, 0, B_TRUE) == -1) {
3999 (void) fprintf(stderr,
4000 gettext("'%s' does not have any "
4001 "resumable receive state to abort\n"),
4002 argv[0]);
4003 return (1);
4004 }
4005 err = zfs_destroy(zhp, B_FALSE);
4006 }
4007
4008 return (err != 0);
4009 }
4010
4011 if (isatty(STDIN_FILENO)) {
4012 (void) fprintf(stderr,
4013 gettext("Error: Backup stream can not be read "
4014 "from a terminal.\n"
4015 "You must redirect standard input.\n"));
4016 return (1);
4017 }
4018 err = zfs_receive(g_zfs, argv[0], props, &flags, STDIN_FILENO, NULL);
4019
4020 return (err != 0);
4021 }
4022
4023 /*
4024 * allow/unallow stuff
4025 */
4026 /* copied from zfs/sys/dsl_deleg.h */
4027 #define ZFS_DELEG_PERM_CREATE "create"
4028 #define ZFS_DELEG_PERM_DESTROY "destroy"
4029 #define ZFS_DELEG_PERM_SNAPSHOT "snapshot"
4030 #define ZFS_DELEG_PERM_ROLLBACK "rollback"
4031 #define ZFS_DELEG_PERM_CLONE "clone"
4032 #define ZFS_DELEG_PERM_PROMOTE "promote"
4033 #define ZFS_DELEG_PERM_RENAME "rename"
4034 #define ZFS_DELEG_PERM_MOUNT "mount"
4035 #define ZFS_DELEG_PERM_SHARE "share"
4036 #define ZFS_DELEG_PERM_SEND "send"
4037 #define ZFS_DELEG_PERM_RECEIVE "receive"
4038 #define ZFS_DELEG_PERM_ALLOW "allow"
4039 #define ZFS_DELEG_PERM_USERPROP "userprop"
4040 #define ZFS_DELEG_PERM_VSCAN "vscan" /* ??? */
4041 #define ZFS_DELEG_PERM_USERQUOTA "userquota"
4042 #define ZFS_DELEG_PERM_GROUPQUOTA "groupquota"
4043 #define ZFS_DELEG_PERM_USERUSED "userused"
4044 #define ZFS_DELEG_PERM_GROUPUSED "groupused"
4045 #define ZFS_DELEG_PERM_HOLD "hold"
4046 #define ZFS_DELEG_PERM_RELEASE "release"
4047 #define ZFS_DELEG_PERM_DIFF "diff"
4048 #define ZFS_DELEG_PERM_BOOKMARK "bookmark"
4049
4050 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
4051
4052 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
4053 { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
4054 { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
4055 { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
4056 { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
4057 { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
4058 { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
4059 { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
4060 { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
4061 { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
4062 { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
4063 { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
4064 { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
4065 { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
4066 { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
4067 { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
4068 { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
4069
4070 { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
4071 { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
4072 { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
4073 { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
4074 { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
4075 { NULL, ZFS_DELEG_NOTE_NONE }
4076 };
4077
4078 /* permission structure */
4079 typedef struct deleg_perm {
4080 zfs_deleg_who_type_t dp_who_type;
4081 const char *dp_name;
4082 boolean_t dp_local;
4083 boolean_t dp_descend;
4084 } deleg_perm_t;
4085
4086 /* */
4087 typedef struct deleg_perm_node {
4088 deleg_perm_t dpn_perm;
4089
4090 uu_avl_node_t dpn_avl_node;
4091 } deleg_perm_node_t;
4092
4093 typedef struct fs_perm fs_perm_t;
4094
4095 /* permissions set */
4096 typedef struct who_perm {
4097 zfs_deleg_who_type_t who_type;
4098 const char *who_name; /* id */
4099 char who_ug_name[256]; /* user/group name */
4100 fs_perm_t *who_fsperm; /* uplink */
4101
4102 uu_avl_t *who_deleg_perm_avl; /* permissions */
4103 } who_perm_t;
4104
4105 /* */
4106 typedef struct who_perm_node {
4107 who_perm_t who_perm;
4108 uu_avl_node_t who_avl_node;
4109 } who_perm_node_t;
4110
4111 typedef struct fs_perm_set fs_perm_set_t;
4112 /* fs permissions */
4113 struct fs_perm {
4114 const char *fsp_name;
4115
4116 uu_avl_t *fsp_sc_avl; /* sets,create */
4117 uu_avl_t *fsp_uge_avl; /* user,group,everyone */
4118
4119 fs_perm_set_t *fsp_set; /* uplink */
4120 };
4121
4122 /* */
4123 typedef struct fs_perm_node {
4124 fs_perm_t fspn_fsperm;
4125 uu_avl_t *fspn_avl;
4126
4127 uu_list_node_t fspn_list_node;
4128 } fs_perm_node_t;
4129
4130 /* top level structure */
4131 struct fs_perm_set {
4132 uu_list_pool_t *fsps_list_pool;
4133 uu_list_t *fsps_list; /* list of fs_perms */
4134
4135 uu_avl_pool_t *fsps_named_set_avl_pool;
4136 uu_avl_pool_t *fsps_who_perm_avl_pool;
4137 uu_avl_pool_t *fsps_deleg_perm_avl_pool;
4138 };
4139
4140 static inline const char *
4141 deleg_perm_type(zfs_deleg_note_t note)
4142 {
4143 /* subcommands */
4144 switch (note) {
4145 /* SUBCOMMANDS */
4146 /* OTHER */
4147 case ZFS_DELEG_NOTE_GROUPQUOTA:
4148 case ZFS_DELEG_NOTE_GROUPUSED:
4149 case ZFS_DELEG_NOTE_USERPROP:
4150 case ZFS_DELEG_NOTE_USERQUOTA:
4151 case ZFS_DELEG_NOTE_USERUSED:
4152 /* other */
4153 return (gettext("other"));
4154 default:
4155 return (gettext("subcommand"));
4156 }
4157 }
4158
4159 static int inline
4160 who_type2weight(zfs_deleg_who_type_t who_type)
4161 {
4162 int res;
4163 switch (who_type) {
4164 case ZFS_DELEG_NAMED_SET_SETS:
4165 case ZFS_DELEG_NAMED_SET:
4166 res = 0;
4167 break;
4168 case ZFS_DELEG_CREATE_SETS:
4169 case ZFS_DELEG_CREATE:
4170 res = 1;
4171 break;
4172 case ZFS_DELEG_USER_SETS:
4173 case ZFS_DELEG_USER:
4174 res = 2;
4175 break;
4176 case ZFS_DELEG_GROUP_SETS:
4177 case ZFS_DELEG_GROUP:
4178 res = 3;
4179 break;
4180 case ZFS_DELEG_EVERYONE_SETS:
4181 case ZFS_DELEG_EVERYONE:
4182 res = 4;
4183 break;
4184 default:
4185 res = -1;
4186 }
4187
4188 return (res);
4189 }
4190
4191 /* ARGSUSED */
4192 static int
4193 who_perm_compare(const void *larg, const void *rarg, void *unused)
4194 {
4195 const who_perm_node_t *l = larg;
4196 const who_perm_node_t *r = rarg;
4197 zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4198 zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4199 int lweight = who_type2weight(ltype);
4200 int rweight = who_type2weight(rtype);
4201 int res = lweight - rweight;
4202 if (res == 0)
4203 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4204 ZFS_MAX_DELEG_NAME-1);
4205
4206 if (res == 0)
4207 return (0);
4208 if (res > 0)
4209 return (1);
4210 else
4211 return (-1);
4212 }
4213
4214 /* ARGSUSED */
4215 static int
4216 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4217 {
4218 const deleg_perm_node_t *l = larg;
4219 const deleg_perm_node_t *r = rarg;
4220 int res = strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4221 ZFS_MAX_DELEG_NAME-1);
4222
4223 if (res == 0)
4224 return (0);
4225
4226 if (res > 0)
4227 return (1);
4228 else
4229 return (-1);
4230 }
4231
4232 static inline void
4233 fs_perm_set_init(fs_perm_set_t *fspset)
4234 {
4235 bzero(fspset, sizeof (fs_perm_set_t));
4236
4237 if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4238 sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4239 NULL, UU_DEFAULT)) == NULL)
4240 nomem();
4241 if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4242 UU_DEFAULT)) == NULL)
4243 nomem();
4244
4245 if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4246 "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4247 who_perm_node_t, who_avl_node), who_perm_compare,
4248 UU_DEFAULT)) == NULL)
4249 nomem();
4250
4251 if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4252 "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4253 who_perm_node_t, who_avl_node), who_perm_compare,
4254 UU_DEFAULT)) == NULL)
4255 nomem();
4256
4257 if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4258 "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4259 deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4260 == NULL)
4261 nomem();
4262 }
4263
4264 static inline void fs_perm_fini(fs_perm_t *);
4265 static inline void who_perm_fini(who_perm_t *);
4266
4267 static inline void
4268 fs_perm_set_fini(fs_perm_set_t *fspset)
4269 {
4270 fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4271
4272 while (node != NULL) {
4273 fs_perm_node_t *next_node =
4274 uu_list_next(fspset->fsps_list, node);
4275 fs_perm_t *fsperm = &node->fspn_fsperm;
4276 fs_perm_fini(fsperm);
4277 uu_list_remove(fspset->fsps_list, node);
4278 free(node);
4279 node = next_node;
4280 }
4281
4282 uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4283 uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4284 uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4285 }
4286
4287 static inline void
4288 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4289 const char *name)
4290 {
4291 deleg_perm->dp_who_type = type;
4292 deleg_perm->dp_name = name;
4293 }
4294
4295 static inline void
4296 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4297 zfs_deleg_who_type_t type, const char *name)
4298 {
4299 uu_avl_pool_t *pool;
4300 pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4301
4302 bzero(who_perm, sizeof (who_perm_t));
4303
4304 if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4305 UU_DEFAULT)) == NULL)
4306 nomem();
4307
4308 who_perm->who_type = type;
4309 who_perm->who_name = name;
4310 who_perm->who_fsperm = fsperm;
4311 }
4312
4313 static inline void
4314 who_perm_fini(who_perm_t *who_perm)
4315 {
4316 deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4317
4318 while (node != NULL) {
4319 deleg_perm_node_t *next_node =
4320 uu_avl_next(who_perm->who_deleg_perm_avl, node);
4321
4322 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4323 free(node);
4324 node = next_node;
4325 }
4326
4327 uu_avl_destroy(who_perm->who_deleg_perm_avl);
4328 }
4329
4330 static inline void
4331 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4332 {
4333 uu_avl_pool_t *nset_pool = fspset->fsps_named_set_avl_pool;
4334 uu_avl_pool_t *who_pool = fspset->fsps_who_perm_avl_pool;
4335
4336 bzero(fsperm, sizeof (fs_perm_t));
4337
4338 if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4339 == NULL)
4340 nomem();
4341
4342 if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4343 == NULL)
4344 nomem();
4345
4346 fsperm->fsp_set = fspset;
4347 fsperm->fsp_name = fsname;
4348 }
4349
4350 static inline void
4351 fs_perm_fini(fs_perm_t *fsperm)
4352 {
4353 who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4354 while (node != NULL) {
4355 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4356 node);
4357 who_perm_t *who_perm = &node->who_perm;
4358 who_perm_fini(who_perm);
4359 uu_avl_remove(fsperm->fsp_sc_avl, node);
4360 free(node);
4361 node = next_node;
4362 }
4363
4364 node = uu_avl_first(fsperm->fsp_uge_avl);
4365 while (node != NULL) {
4366 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4367 node);
4368 who_perm_t *who_perm = &node->who_perm;
4369 who_perm_fini(who_perm);
4370 uu_avl_remove(fsperm->fsp_uge_avl, node);
4371 free(node);
4372 node = next_node;
4373 }
4374
4375 uu_avl_destroy(fsperm->fsp_sc_avl);
4376 uu_avl_destroy(fsperm->fsp_uge_avl);
4377 }
4378
4379 static void inline
4380 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4381 zfs_deleg_who_type_t who_type, const char *name, char locality)
4382 {
4383 uu_avl_index_t idx = 0;
4384
4385 deleg_perm_node_t *found_node = NULL;
4386 deleg_perm_t *deleg_perm = &node->dpn_perm;
4387
4388 deleg_perm_init(deleg_perm, who_type, name);
4389
4390 if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4391 == NULL)
4392 uu_avl_insert(avl, node, idx);
4393 else {
4394 node = found_node;
4395 deleg_perm = &node->dpn_perm;
4396 }
4397
4398
4399 switch (locality) {
4400 case ZFS_DELEG_LOCAL:
4401 deleg_perm->dp_local = B_TRUE;
4402 break;
4403 case ZFS_DELEG_DESCENDENT:
4404 deleg_perm->dp_descend = B_TRUE;
4405 break;
4406 case ZFS_DELEG_NA:
4407 break;
4408 default:
4409 assert(B_FALSE); /* invalid locality */
4410 }
4411 }
4412
4413 static inline int
4414 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4415 {
4416 nvpair_t *nvp = NULL;
4417 fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4418 uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4419 zfs_deleg_who_type_t who_type = who_perm->who_type;
4420
4421 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4422 const char *name = nvpair_name(nvp);
4423 data_type_t type = nvpair_type(nvp);
4424 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4425 deleg_perm_node_t *node =
4426 safe_malloc(sizeof (deleg_perm_node_t));
4427
4428 assert(type == DATA_TYPE_BOOLEAN);
4429
4430 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4431 set_deleg_perm_node(avl, node, who_type, name, locality);
4432 }
4433
4434 return (0);
4435 }
4436
4437 static inline int
4438 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4439 {
4440 nvpair_t *nvp = NULL;
4441 fs_perm_set_t *fspset = fsperm->fsp_set;
4442
4443 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4444 nvlist_t *nvl2 = NULL;
4445 const char *name = nvpair_name(nvp);
4446 uu_avl_t *avl = NULL;
4447 uu_avl_pool_t *avl_pool;
4448 zfs_deleg_who_type_t perm_type = name[0];
4449 char perm_locality = name[1];
4450 const char *perm_name = name + 3;
4451 boolean_t is_set = B_TRUE;
4452 who_perm_t *who_perm = NULL;
4453
4454 assert('$' == name[2]);
4455
4456 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4457 return (-1);
4458
4459 switch (perm_type) {
4460 case ZFS_DELEG_CREATE:
4461 case ZFS_DELEG_CREATE_SETS:
4462 case ZFS_DELEG_NAMED_SET:
4463 case ZFS_DELEG_NAMED_SET_SETS:
4464 avl_pool = fspset->fsps_named_set_avl_pool;
4465 avl = fsperm->fsp_sc_avl;
4466 break;
4467 case ZFS_DELEG_USER:
4468 case ZFS_DELEG_USER_SETS:
4469 case ZFS_DELEG_GROUP:
4470 case ZFS_DELEG_GROUP_SETS:
4471 case ZFS_DELEG_EVERYONE:
4472 case ZFS_DELEG_EVERYONE_SETS:
4473 avl_pool = fspset->fsps_who_perm_avl_pool;
4474 avl = fsperm->fsp_uge_avl;
4475 break;
4476 }
4477
4478 if (is_set) {
4479 who_perm_node_t *found_node = NULL;
4480 who_perm_node_t *node = safe_malloc(
4481 sizeof (who_perm_node_t));
4482 who_perm = &node->who_perm;
4483 uu_avl_index_t idx = 0;
4484
4485 uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4486 who_perm_init(who_perm, fsperm, perm_type, perm_name);
4487
4488 if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4489 == NULL) {
4490 if (avl == fsperm->fsp_uge_avl) {
4491 uid_t rid = 0;
4492 struct passwd *p = NULL;
4493 struct group *g = NULL;
4494 const char *nice_name = NULL;
4495
4496 switch (perm_type) {
4497 case ZFS_DELEG_USER_SETS:
4498 case ZFS_DELEG_USER:
4499 rid = atoi(perm_name);
4500 p = getpwuid(rid);
4501 if (p)
4502 nice_name = p->pw_name;
4503 break;
4504 case ZFS_DELEG_GROUP_SETS:
4505 case ZFS_DELEG_GROUP:
4506 rid = atoi(perm_name);
4507 g = getgrgid(rid);
4508 if (g)
4509 nice_name = g->gr_name;
4510 break;
4511 }
4512
4513 if (nice_name != NULL)
4514 (void) strlcpy(
4515 node->who_perm.who_ug_name,
4516 nice_name, 256);
4517 }
4518
4519 uu_avl_insert(avl, node, idx);
4520 } else {
4521 node = found_node;
4522 who_perm = &node->who_perm;
4523 }
4524 }
4525
4526 (void) parse_who_perm(who_perm, nvl2, perm_locality);
4527 }
4528
4529 return (0);
4530 }
4531
4532 static inline int
4533 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4534 {
4535 nvpair_t *nvp = NULL;
4536 uu_avl_index_t idx = 0;
4537
4538 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4539 nvlist_t *nvl2 = NULL;
4540 const char *fsname = nvpair_name(nvp);
4541 data_type_t type = nvpair_type(nvp);
4542 fs_perm_t *fsperm = NULL;
4543 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4544 if (node == NULL)
4545 nomem();
4546
4547 fsperm = &node->fspn_fsperm;
4548
4549 assert(DATA_TYPE_NVLIST == type);
4550
4551 uu_list_node_init(node, &node->fspn_list_node,
4552 fspset->fsps_list_pool);
4553
4554 idx = uu_list_numnodes(fspset->fsps_list);
4555 fs_perm_init(fsperm, fspset, fsname);
4556
4557 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4558 return (-1);
4559
4560 (void) parse_fs_perm(fsperm, nvl2);
4561
4562 uu_list_insert(fspset->fsps_list, node, idx);
4563 }
4564
4565 return (0);
4566 }
4567
4568 static inline const char *
4569 deleg_perm_comment(zfs_deleg_note_t note)
4570 {
4571 const char *str = "";
4572
4573 /* subcommands */
4574 switch (note) {
4575 /* SUBCOMMANDS */
4576 case ZFS_DELEG_NOTE_ALLOW:
4577 str = gettext("Must also have the permission that is being"
4578 "\n\t\t\t\tallowed");
4579 break;
4580 case ZFS_DELEG_NOTE_CLONE:
4581 str = gettext("Must also have the 'create' ability and 'mount'"
4582 "\n\t\t\t\tability in the origin file system");
4583 break;
4584 case ZFS_DELEG_NOTE_CREATE:
4585 str = gettext("Must also have the 'mount' ability");
4586 break;
4587 case ZFS_DELEG_NOTE_DESTROY:
4588 str = gettext("Must also have the 'mount' ability");
4589 break;
4590 case ZFS_DELEG_NOTE_DIFF:
4591 str = gettext("Allows lookup of paths within a dataset;"
4592 "\n\t\t\t\tgiven an object number. Ordinary users need this"
4593 "\n\t\t\t\tin order to use zfs diff");
4594 break;
4595 case ZFS_DELEG_NOTE_HOLD:
4596 str = gettext("Allows adding a user hold to a snapshot");
4597 break;
4598 case ZFS_DELEG_NOTE_MOUNT:
4599 str = gettext("Allows mount/umount of ZFS datasets");
4600 break;
4601 case ZFS_DELEG_NOTE_PROMOTE:
4602 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
4603 " 'promote' ability in the origin file system");
4604 break;
4605 case ZFS_DELEG_NOTE_RECEIVE:
4606 str = gettext("Must also have the 'mount' and 'create'"
4607 " ability");
4608 break;
4609 case ZFS_DELEG_NOTE_RELEASE:
4610 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
4611 "might destroy the snapshot");
4612 break;
4613 case ZFS_DELEG_NOTE_RENAME:
4614 str = gettext("Must also have the 'mount' and 'create'"
4615 "\n\t\t\t\tability in the new parent");
4616 break;
4617 case ZFS_DELEG_NOTE_ROLLBACK:
4618 str = gettext("");
4619 break;
4620 case ZFS_DELEG_NOTE_SEND:
4621 str = gettext("");
4622 break;
4623 case ZFS_DELEG_NOTE_SHARE:
4624 str = gettext("Allows sharing file systems over NFS or SMB"
4625 "\n\t\t\t\tprotocols");
4626 break;
4627 case ZFS_DELEG_NOTE_SNAPSHOT:
4628 str = gettext("");
4629 break;
4630 /*
4631 * case ZFS_DELEG_NOTE_VSCAN:
4632 * str = gettext("");
4633 * break;
4634 */
4635 /* OTHER */
4636 case ZFS_DELEG_NOTE_GROUPQUOTA:
4637 str = gettext("Allows accessing any groupquota@... property");
4638 break;
4639 case ZFS_DELEG_NOTE_GROUPUSED:
4640 str = gettext("Allows reading any groupused@... property");
4641 break;
4642 case ZFS_DELEG_NOTE_USERPROP:
4643 str = gettext("Allows changing any user property");
4644 break;
4645 case ZFS_DELEG_NOTE_USERQUOTA:
4646 str = gettext("Allows accessing any userquota@... property");
4647 break;
4648 case ZFS_DELEG_NOTE_USERUSED:
4649 str = gettext("Allows reading any userused@... property");
4650 break;
4651 /* other */
4652 default:
4653 str = "";
4654 }
4655
4656 return (str);
4657 }
4658
4659 struct allow_opts {
4660 boolean_t local;
4661 boolean_t descend;
4662 boolean_t user;
4663 boolean_t group;
4664 boolean_t everyone;
4665 boolean_t create;
4666 boolean_t set;
4667 boolean_t recursive; /* unallow only */
4668 boolean_t prt_usage;
4669
4670 boolean_t prt_perms;
4671 char *who;
4672 char *perms;
4673 const char *dataset;
4674 };
4675
4676 static inline int
4677 prop_cmp(const void *a, const void *b)
4678 {
4679 const char *str1 = *(const char **)a;
4680 const char *str2 = *(const char **)b;
4681 return (strcmp(str1, str2));
4682 }
4683
4684 static void
4685 allow_usage(boolean_t un, boolean_t requested, const char *msg)
4686 {
4687 const char *opt_desc[] = {
4688 "-h", gettext("show this help message and exit"),
4689 "-l", gettext("set permission locally"),
4690 "-d", gettext("set permission for descents"),
4691 "-u", gettext("set permission for user"),
4692 "-g", gettext("set permission for group"),
4693 "-e", gettext("set permission for everyone"),
4694 "-c", gettext("set create time permission"),
4695 "-s", gettext("define permission set"),
4696 /* unallow only */
4697 "-r", gettext("remove permissions recursively"),
4698 };
4699 size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
4700 size_t allow_size = unallow_size - 2;
4701 const char *props[ZFS_NUM_PROPS];
4702 int i;
4703 size_t count = 0;
4704 FILE *fp = requested ? stdout : stderr;
4705 zprop_desc_t *pdtbl = zfs_prop_get_table();
4706 const char *fmt = gettext("%-16s %-14s\t%s\n");
4707
4708 (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
4709 HELP_ALLOW));
4710 (void) fprintf(fp, gettext("Options:\n"));
4711 for (int i = 0; i < (un ? unallow_size : allow_size); i++) {
4712 const char *opt = opt_desc[i++];
4713 const char *optdsc = opt_desc[i];
4714 (void) fprintf(fp, gettext(" %-10s %s\n"), opt, optdsc);
4715 }
4716
4717 (void) fprintf(fp, gettext("\nThe following permissions are "
4718 "supported:\n\n"));
4719 (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
4720 gettext("NOTES"));
4721 for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
4722 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
4723 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
4724 const char *perm_type = deleg_perm_type(perm_note);
4725 const char *perm_comment = deleg_perm_comment(perm_note);
4726 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
4727 }
4728
4729 for (i = 0; i < ZFS_NUM_PROPS; i++) {
4730 zprop_desc_t *pd = &pdtbl[i];
4731 if (pd->pd_visible != B_TRUE)
4732 continue;
4733
4734 if (pd->pd_attr == PROP_READONLY)
4735 continue;
4736
4737 props[count++] = pd->pd_name;
4738 }
4739 props[count] = NULL;
4740
4741 qsort(props, count, sizeof (char *), prop_cmp);
4742
4743 for (i = 0; i < count; i++)
4744 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
4745
4746 if (msg != NULL)
4747 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
4748
4749 exit(requested ? 0 : 2);
4750 }
4751
4752 static inline const char *
4753 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
4754 char **permsp)
4755 {
4756 if (un && argc == expected_argc - 1)
4757 *permsp = NULL;
4758 else if (argc == expected_argc)
4759 *permsp = argv[argc - 2];
4760 else
4761 allow_usage(un, B_FALSE,
4762 gettext("wrong number of parameters\n"));
4763
4764 return (argv[argc - 1]);
4765 }
4766
4767 static void
4768 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
4769 {
4770 int uge_sum = opts->user + opts->group + opts->everyone;
4771 int csuge_sum = opts->create + opts->set + uge_sum;
4772 int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
4773 int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
4774
4775 if (uge_sum > 1)
4776 allow_usage(un, B_FALSE,
4777 gettext("-u, -g, and -e are mutually exclusive\n"));
4778
4779 if (opts->prt_usage)
4780 if (argc == 0 && all_sum == 0)
4781 allow_usage(un, B_TRUE, NULL);
4782 else
4783 usage(B_FALSE);
4784
4785 if (opts->set) {
4786 if (csuge_sum > 1)
4787 allow_usage(un, B_FALSE,
4788 gettext("invalid options combined with -s\n"));
4789
4790 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4791 if (argv[0][0] != '@')
4792 allow_usage(un, B_FALSE,
4793 gettext("invalid set name: missing '@' prefix\n"));
4794 opts->who = argv[0];
4795 } else if (opts->create) {
4796 if (ldcsuge_sum > 1)
4797 allow_usage(un, B_FALSE,
4798 gettext("invalid options combined with -c\n"));
4799 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4800 } else if (opts->everyone) {
4801 if (csuge_sum > 1)
4802 allow_usage(un, B_FALSE,
4803 gettext("invalid options combined with -e\n"));
4804 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4805 } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
4806 == 0) {
4807 opts->everyone = B_TRUE;
4808 argc--;
4809 argv++;
4810 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
4811 } else if (argc == 1 && !un) {
4812 opts->prt_perms = B_TRUE;
4813 opts->dataset = argv[argc-1];
4814 } else {
4815 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
4816 opts->who = argv[0];
4817 }
4818
4819 if (!opts->local && !opts->descend) {
4820 opts->local = B_TRUE;
4821 opts->descend = B_TRUE;
4822 }
4823 }
4824
4825 static void
4826 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
4827 const char *who, char *perms, nvlist_t *top_nvl)
4828 {
4829 int i;
4830 char ld[2] = { '\0', '\0' };
4831 char who_buf[ZFS_MAXNAMELEN+32];
4832 char base_type;
4833 char set_type;
4834 nvlist_t *base_nvl = NULL;
4835 nvlist_t *set_nvl = NULL;
4836 nvlist_t *nvl;
4837
4838 if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
4839 nomem();
4840 if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) != 0)
4841 nomem();
4842
4843 switch (type) {
4844 case ZFS_DELEG_NAMED_SET_SETS:
4845 case ZFS_DELEG_NAMED_SET:
4846 set_type = ZFS_DELEG_NAMED_SET_SETS;
4847 base_type = ZFS_DELEG_NAMED_SET;
4848 ld[0] = ZFS_DELEG_NA;
4849 break;
4850 case ZFS_DELEG_CREATE_SETS:
4851 case ZFS_DELEG_CREATE:
4852 set_type = ZFS_DELEG_CREATE_SETS;
4853 base_type = ZFS_DELEG_CREATE;
4854 ld[0] = ZFS_DELEG_NA;
4855 break;
4856 case ZFS_DELEG_USER_SETS:
4857 case ZFS_DELEG_USER:
4858 set_type = ZFS_DELEG_USER_SETS;
4859 base_type = ZFS_DELEG_USER;
4860 if (local)
4861 ld[0] = ZFS_DELEG_LOCAL;
4862 if (descend)
4863 ld[1] = ZFS_DELEG_DESCENDENT;
4864 break;
4865 case ZFS_DELEG_GROUP_SETS:
4866 case ZFS_DELEG_GROUP:
4867 set_type = ZFS_DELEG_GROUP_SETS;
4868 base_type = ZFS_DELEG_GROUP;
4869 if (local)
4870 ld[0] = ZFS_DELEG_LOCAL;
4871 if (descend)
4872 ld[1] = ZFS_DELEG_DESCENDENT;
4873 break;
4874 case ZFS_DELEG_EVERYONE_SETS:
4875 case ZFS_DELEG_EVERYONE:
4876 set_type = ZFS_DELEG_EVERYONE_SETS;
4877 base_type = ZFS_DELEG_EVERYONE;
4878 if (local)
4879 ld[0] = ZFS_DELEG_LOCAL;
4880 if (descend)
4881 ld[1] = ZFS_DELEG_DESCENDENT;
4882 }
4883
4884 if (perms != NULL) {
4885 char *curr = perms;
4886 char *end = curr + strlen(perms);
4887
4888 while (curr < end) {
4889 char *delim = strchr(curr, ',');
4890 if (delim == NULL)
4891 delim = end;
4892 else
4893 *delim = '\0';
4894
4895 if (curr[0] == '@')
4896 nvl = set_nvl;
4897 else
4898 nvl = base_nvl;
4899
4900 (void) nvlist_add_boolean(nvl, curr);
4901 if (delim != end)
4902 *delim = ',';
4903 curr = delim + 1;
4904 }
4905
4906 for (i = 0; i < 2; i++) {
4907 char locality = ld[i];
4908 if (locality == 0)
4909 continue;
4910
4911 if (!nvlist_empty(base_nvl)) {
4912 if (who != NULL)
4913 (void) snprintf(who_buf,
4914 sizeof (who_buf), "%c%c$%s",
4915 base_type, locality, who);
4916 else
4917 (void) snprintf(who_buf,
4918 sizeof (who_buf), "%c%c$",
4919 base_type, locality);
4920
4921 (void) nvlist_add_nvlist(top_nvl, who_buf,
4922 base_nvl);
4923 }
4924
4925
4926 if (!nvlist_empty(set_nvl)) {
4927 if (who != NULL)
4928 (void) snprintf(who_buf,
4929 sizeof (who_buf), "%c%c$%s",
4930 set_type, locality, who);
4931 else
4932 (void) snprintf(who_buf,
4933 sizeof (who_buf), "%c%c$",
4934 set_type, locality);
4935
4936 (void) nvlist_add_nvlist(top_nvl, who_buf,
4937 set_nvl);
4938 }
4939 }
4940 } else {
4941 for (i = 0; i < 2; i++) {
4942 char locality = ld[i];
4943 if (locality == 0)
4944 continue;
4945
4946 if (who != NULL)
4947 (void) snprintf(who_buf, sizeof (who_buf),
4948 "%c%c$%s", base_type, locality, who);
4949 else
4950 (void) snprintf(who_buf, sizeof (who_buf),
4951 "%c%c$", base_type, locality);
4952 (void) nvlist_add_boolean(top_nvl, who_buf);
4953
4954 if (who != NULL)
4955 (void) snprintf(who_buf, sizeof (who_buf),
4956 "%c%c$%s", set_type, locality, who);
4957 else
4958 (void) snprintf(who_buf, sizeof (who_buf),
4959 "%c%c$", set_type, locality);
4960 (void) nvlist_add_boolean(top_nvl, who_buf);
4961 }
4962 }
4963 }
4964
4965 static int
4966 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
4967 {
4968 if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
4969 nomem();
4970
4971 if (opts->set) {
4972 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
4973 opts->descend, opts->who, opts->perms, *nvlp);
4974 } else if (opts->create) {
4975 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
4976 opts->descend, NULL, opts->perms, *nvlp);
4977 } else if (opts->everyone) {
4978 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
4979 opts->descend, NULL, opts->perms, *nvlp);
4980 } else {
4981 char *curr = opts->who;
4982 char *end = curr + strlen(curr);
4983
4984 while (curr < end) {
4985 const char *who;
4986 zfs_deleg_who_type_t who_type;
4987 char *endch;
4988 char *delim = strchr(curr, ',');
4989 char errbuf[256];
4990 char id[64];
4991 struct passwd *p = NULL;
4992 struct group *g = NULL;
4993
4994 uid_t rid;
4995 if (delim == NULL)
4996 delim = end;
4997 else
4998 *delim = '\0';
4999
5000 rid = (uid_t)strtol(curr, &endch, 0);
5001 if (opts->user) {
5002 who_type = ZFS_DELEG_USER;
5003 if (*endch != '\0')
5004 p = getpwnam(curr);
5005 else
5006 p = getpwuid(rid);
5007
5008 if (p != NULL)
5009 rid = p->pw_uid;
5010 else {
5011 (void) snprintf(errbuf, 256, gettext(
5012 "invalid user %s"), curr);
5013 allow_usage(un, B_TRUE, errbuf);
5014 }
5015 } else if (opts->group) {
5016 who_type = ZFS_DELEG_GROUP;
5017 if (*endch != '\0')
5018 g = getgrnam(curr);
5019 else
5020 g = getgrgid(rid);
5021
5022 if (g != NULL)
5023 rid = g->gr_gid;
5024 else {
5025 (void) snprintf(errbuf, 256, gettext(
5026 "invalid group %s"), curr);
5027 allow_usage(un, B_TRUE, errbuf);
5028 }
5029 } else {
5030 if (*endch != '\0') {
5031 p = getpwnam(curr);
5032 } else {
5033 p = getpwuid(rid);
5034 }
5035
5036 if (p == NULL)
5037 if (*endch != '\0') {
5038 g = getgrnam(curr);
5039 } else {
5040 g = getgrgid(rid);
5041 }
5042
5043 if (p != NULL) {
5044 who_type = ZFS_DELEG_USER;
5045 rid = p->pw_uid;
5046 } else if (g != NULL) {
5047 who_type = ZFS_DELEG_GROUP;
5048 rid = g->gr_gid;
5049 } else {
5050 (void) snprintf(errbuf, 256, gettext(
5051 "invalid user/group %s"), curr);
5052 allow_usage(un, B_TRUE, errbuf);
5053 }
5054 }
5055
5056 (void) sprintf(id, "%u", rid);
5057 who = id;
5058
5059 store_allow_perm(who_type, opts->local,
5060 opts->descend, who, opts->perms, *nvlp);
5061 curr = delim + 1;
5062 }
5063 }
5064
5065 return (0);
5066 }
5067
5068 static void
5069 print_set_creat_perms(uu_avl_t *who_avl)
5070 {
5071 const char *sc_title[] = {
5072 gettext("Permission sets:\n"),
5073 gettext("Create time permissions:\n"),
5074 NULL
5075 };
5076 const char **title_ptr = sc_title;
5077 who_perm_node_t *who_node = NULL;
5078 int prev_weight = -1;
5079
5080 for (who_node = uu_avl_first(who_avl); who_node != NULL;
5081 who_node = uu_avl_next(who_avl, who_node)) {
5082 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5083 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5084 const char *who_name = who_node->who_perm.who_name;
5085 int weight = who_type2weight(who_type);
5086 boolean_t first = B_TRUE;
5087 deleg_perm_node_t *deleg_node;
5088
5089 if (prev_weight != weight) {
5090 (void) printf(*title_ptr++);
5091 prev_weight = weight;
5092 }
5093
5094 if (who_name == NULL || strnlen(who_name, 1) == 0)
5095 (void) printf("\t");
5096 else
5097 (void) printf("\t%s ", who_name);
5098
5099 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5100 deleg_node = uu_avl_next(avl, deleg_node)) {
5101 if (first) {
5102 (void) printf("%s",
5103 deleg_node->dpn_perm.dp_name);
5104 first = B_FALSE;
5105 } else
5106 (void) printf(",%s",
5107 deleg_node->dpn_perm.dp_name);
5108 }
5109
5110 (void) printf("\n");
5111 }
5112 }
5113
5114 static void inline
5115 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5116 const char *title)
5117 {
5118 who_perm_node_t *who_node = NULL;
5119 boolean_t prt_title = B_TRUE;
5120 uu_avl_walk_t *walk;
5121
5122 if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5123 nomem();
5124
5125 while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5126 const char *who_name = who_node->who_perm.who_name;
5127 const char *nice_who_name = who_node->who_perm.who_ug_name;
5128 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5129 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5130 char delim = ' ';
5131 deleg_perm_node_t *deleg_node;
5132 boolean_t prt_who = B_TRUE;
5133
5134 for (deleg_node = uu_avl_first(avl);
5135 deleg_node != NULL;
5136 deleg_node = uu_avl_next(avl, deleg_node)) {
5137 if (local != deleg_node->dpn_perm.dp_local ||
5138 descend != deleg_node->dpn_perm.dp_descend)
5139 continue;
5140
5141 if (prt_who) {
5142 const char *who = NULL;
5143 if (prt_title) {
5144 prt_title = B_FALSE;
5145 (void) printf(title);
5146 }
5147
5148 switch (who_type) {
5149 case ZFS_DELEG_USER_SETS:
5150 case ZFS_DELEG_USER:
5151 who = gettext("user");
5152 if (nice_who_name)
5153 who_name = nice_who_name;
5154 break;
5155 case ZFS_DELEG_GROUP_SETS:
5156 case ZFS_DELEG_GROUP:
5157 who = gettext("group");
5158 if (nice_who_name)
5159 who_name = nice_who_name;
5160 break;
5161 case ZFS_DELEG_EVERYONE_SETS:
5162 case ZFS_DELEG_EVERYONE:
5163 who = gettext("everyone");
5164 who_name = NULL;
5165 }
5166
5167 prt_who = B_FALSE;
5168 if (who_name == NULL)
5169 (void) printf("\t%s", who);
5170 else
5171 (void) printf("\t%s %s", who, who_name);
5172 }
5173
5174 (void) printf("%c%s", delim,
5175 deleg_node->dpn_perm.dp_name);
5176 delim = ',';
5177 }
5178
5179 if (!prt_who)
5180 (void) printf("\n");
5181 }
5182
5183 uu_avl_walk_end(walk);
5184 }
5185
5186 static void
5187 print_fs_perms(fs_perm_set_t *fspset)
5188 {
5189 fs_perm_node_t *node = NULL;
5190 char buf[ZFS_MAXNAMELEN+32];
5191 const char *dsname = buf;
5192
5193 for (node = uu_list_first(fspset->fsps_list); node != NULL;
5194 node = uu_list_next(fspset->fsps_list, node)) {
5195 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5196 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5197 int left = 0;
5198
5199 (void) snprintf(buf, ZFS_MAXNAMELEN+32,
5200 gettext("---- Permissions on %s "),
5201 node->fspn_fsperm.fsp_name);
5202 (void) printf(dsname);
5203 left = 70 - strlen(buf);
5204 while (left-- > 0)
5205 (void) printf("-");
5206 (void) printf("\n");
5207
5208 print_set_creat_perms(sc_avl);
5209 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5210 gettext("Local permissions:\n"));
5211 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5212 gettext("Descendent permissions:\n"));
5213 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5214 gettext("Local+Descendent permissions:\n"));
5215 }
5216 }
5217
5218 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5219
5220 struct deleg_perms {
5221 boolean_t un;
5222 nvlist_t *nvl;
5223 };
5224
5225 static int
5226 set_deleg_perms(zfs_handle_t *zhp, void *data)
5227 {
5228 struct deleg_perms *perms = (struct deleg_perms *)data;
5229 zfs_type_t zfs_type = zfs_get_type(zhp);
5230
5231 if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5232 return (0);
5233
5234 return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5235 }
5236
5237 static int
5238 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5239 {
5240 zfs_handle_t *zhp;
5241 nvlist_t *perm_nvl = NULL;
5242 nvlist_t *update_perm_nvl = NULL;
5243 int error = 1;
5244 int c;
5245 struct allow_opts opts = { 0 };
5246
5247 const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5248
5249 /* check opts */
5250 while ((c = getopt(argc, argv, optstr)) != -1) {
5251 switch (c) {
5252 case 'l':
5253 opts.local = B_TRUE;
5254 break;
5255 case 'd':
5256 opts.descend = B_TRUE;
5257 break;
5258 case 'u':
5259 opts.user = B_TRUE;
5260 break;
5261 case 'g':
5262 opts.group = B_TRUE;
5263 break;
5264 case 'e':
5265 opts.everyone = B_TRUE;
5266 break;
5267 case 's':
5268 opts.set = B_TRUE;
5269 break;
5270 case 'c':
5271 opts.create = B_TRUE;
5272 break;
5273 case 'r':
5274 opts.recursive = B_TRUE;
5275 break;
5276 case ':':
5277 (void) fprintf(stderr, gettext("missing argument for "
5278 "'%c' option\n"), optopt);
5279 usage(B_FALSE);
5280 break;
5281 case 'h':
5282 opts.prt_usage = B_TRUE;
5283 break;
5284 case '?':
5285 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5286 optopt);
5287 usage(B_FALSE);
5288 }
5289 }
5290
5291 argc -= optind;
5292 argv += optind;
5293
5294 /* check arguments */
5295 parse_allow_args(argc, argv, un, &opts);
5296
5297 /* try to open the dataset */
5298 if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5299 ZFS_TYPE_VOLUME)) == NULL) {
5300 (void) fprintf(stderr, "Failed to open dataset: %s\n",
5301 opts.dataset);
5302 return (-1);
5303 }
5304
5305 if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5306 goto cleanup2;
5307
5308 fs_perm_set_init(&fs_perm_set);
5309 if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5310 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5311 goto cleanup1;
5312 }
5313
5314 if (opts.prt_perms)
5315 print_fs_perms(&fs_perm_set);
5316 else {
5317 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5318 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5319 goto cleanup0;
5320
5321 if (un && opts.recursive) {
5322 struct deleg_perms data = { un, update_perm_nvl };
5323 if (zfs_iter_filesystems(zhp, set_deleg_perms,
5324 &data) != 0)
5325 goto cleanup0;
5326 }
5327 }
5328
5329 error = 0;
5330
5331 cleanup0:
5332 nvlist_free(perm_nvl);
5333 if (update_perm_nvl != NULL)
5334 nvlist_free(update_perm_nvl);
5335 cleanup1:
5336 fs_perm_set_fini(&fs_perm_set);
5337 cleanup2:
5338 zfs_close(zhp);
5339
5340 return (error);
5341 }
5342
5343 static int
5344 zfs_do_allow(int argc, char **argv)
5345 {
5346 return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5347 }
5348
5349 static int
5350 zfs_do_unallow(int argc, char **argv)
5351 {
5352 return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5353 }
5354
5355 static int
5356 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5357 {
5358 int errors = 0;
5359 int i;
5360 const char *tag;
5361 boolean_t recursive = B_FALSE;
5362 const char *opts = holding ? "rt" : "r";
5363 int c;
5364
5365 /* check options */
5366 while ((c = getopt(argc, argv, opts)) != -1) {
5367 switch (c) {
5368 case 'r':
5369 recursive = B_TRUE;
5370 break;
5371 case '?':
5372 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5373 optopt);
5374 usage(B_FALSE);
5375 }
5376 }
5377
5378 argc -= optind;
5379 argv += optind;
5380
5381 /* check number of arguments */
5382 if (argc < 2)
5383 usage(B_FALSE);
5384
5385 tag = argv[0];
5386 --argc;
5387 ++argv;
5388
5389 if (holding && tag[0] == '.') {
5390 /* tags starting with '.' are reserved for libzfs */
5391 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5392 usage(B_FALSE);
5393 }
5394
5395 for (i = 0; i < argc; ++i) {
5396 zfs_handle_t *zhp;
5397 char parent[ZFS_MAXNAMELEN];
5398 const char *delim;
5399 char *path = argv[i];
5400
5401 delim = strchr(path, '@');
5402 if (delim == NULL) {
5403 (void) fprintf(stderr,
5404 gettext("'%s' is not a snapshot\n"), path);
5405 ++errors;
5406 continue;
5407 }
5408 (void) strncpy(parent, path, delim - path);
5409 parent[delim - path] = '\0';
5410
5411 zhp = zfs_open(g_zfs, parent,
5412 ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5413 if (zhp == NULL) {
5414 ++errors;
5415 continue;
5416 }
5417 if (holding) {
5418 if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5419 ++errors;
5420 } else {
5421 if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5422 ++errors;
5423 }
5424 zfs_close(zhp);
5425 }
5426
5427 return (errors != 0);
5428 }
5429
5430 /*
5431 * zfs hold [-r] [-t] <tag> <snap> ...
5432 *
5433 * -r Recursively hold
5434 *
5435 * Apply a user-hold with the given tag to the list of snapshots.
5436 */
5437 static int
5438 zfs_do_hold(int argc, char **argv)
5439 {
5440 return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5441 }
5442
5443 /*
5444 * zfs release [-r] <tag> <snap> ...
5445 *
5446 * -r Recursively release
5447 *
5448 * Release a user-hold with the given tag from the list of snapshots.
5449 */
5450 static int
5451 zfs_do_release(int argc, char **argv)
5452 {
5453 return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5454 }
5455
5456 typedef struct holds_cbdata {
5457 boolean_t cb_recursive;
5458 const char *cb_snapname;
5459 nvlist_t **cb_nvlp;
5460 size_t cb_max_namelen;
5461 size_t cb_max_taglen;
5462 } holds_cbdata_t;
5463
5464 #define STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5465 #define DATETIME_BUF_LEN (32)
5466 /*
5467 *
5468 */
5469 static void
5470 print_holds(boolean_t scripted, size_t nwidth, size_t tagwidth, nvlist_t *nvl)
5471 {
5472 int i;
5473 nvpair_t *nvp = NULL;
5474 char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5475 const char *col;
5476
5477 if (!scripted) {
5478 for (i = 0; i < 3; i++) {
5479 col = gettext(hdr_cols[i]);
5480 if (i < 2)
5481 (void) printf("%-*s ", i ? tagwidth : nwidth,
5482 col);
5483 else
5484 (void) printf("%s\n", col);
5485 }
5486 }
5487
5488 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5489 char *zname = nvpair_name(nvp);
5490 nvlist_t *nvl2;
5491 nvpair_t *nvp2 = NULL;
5492 (void) nvpair_value_nvlist(nvp, &nvl2);
5493 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5494 char tsbuf[DATETIME_BUF_LEN];
5495 char *tagname = nvpair_name(nvp2);
5496 uint64_t val = 0;
5497 time_t time;
5498 struct tm t;
5499 char sep = scripted ? '\t' : ' ';
5500 size_t sepnum = scripted ? 1 : 2;
5501
5502 (void) nvpair_value_uint64(nvp2, &val);
5503 time = (time_t)val;
5504 (void) localtime_r(&time, &t);
5505 (void) strftime(tsbuf, DATETIME_BUF_LEN,
5506 gettext(STRFTIME_FMT_STR), &t);
5507
5508 (void) printf("%-*s%*c%-*s%*c%s\n", nwidth, zname,
5509 sepnum, sep, tagwidth, tagname, sepnum, sep, tsbuf);
5510 }
5511 }
5512 }
5513
5514 /*
5515 * Generic callback function to list a dataset or snapshot.
5516 */
5517 static int
5518 holds_callback(zfs_handle_t *zhp, void *data)
5519 {
5520 holds_cbdata_t *cbp = data;
5521 nvlist_t *top_nvl = *cbp->cb_nvlp;
5522 nvlist_t *nvl = NULL;
5523 nvpair_t *nvp = NULL;
5524 const char *zname = zfs_get_name(zhp);
5525 size_t znamelen = strnlen(zname, ZFS_MAXNAMELEN);
5526
5527 if (cbp->cb_recursive) {
5528 const char *snapname;
5529 char *delim = strchr(zname, '@');
5530 if (delim == NULL)
5531 return (0);
5532
5533 snapname = delim + 1;
5534 if (strcmp(cbp->cb_snapname, snapname))
5535 return (0);
5536 }
5537
5538 if (zfs_get_holds(zhp, &nvl) != 0)
5539 return (-1);
5540
5541 if (znamelen > cbp->cb_max_namelen)
5542 cbp->cb_max_namelen = znamelen;
5543
5544 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5545 const char *tag = nvpair_name(nvp);
5546 size_t taglen = strnlen(tag, MAXNAMELEN);
5547 if (taglen > cbp->cb_max_taglen)
5548 cbp->cb_max_taglen = taglen;
5549 }
5550
5551 return (nvlist_add_nvlist(top_nvl, zname, nvl));
5552 }
5553
5554 /*
5555 * zfs holds [-r] <snap> ...
5556 *
5557 * -r Recursively hold
5558 */
5559 static int
5560 zfs_do_holds(int argc, char **argv)
5561 {
5562 int errors = 0;
5563 int c;
5564 int i;
5565 boolean_t scripted = B_FALSE;
5566 boolean_t recursive = B_FALSE;
5567 const char *opts = "rH";
5568 nvlist_t *nvl;
5569
5570 int types = ZFS_TYPE_SNAPSHOT;
5571 holds_cbdata_t cb = { 0 };
5572
5573 int limit = 0;
5574 int ret = 0;
5575 int flags = 0;
5576
5577 /* check options */
5578 while ((c = getopt(argc, argv, opts)) != -1) {
5579 switch (c) {
5580 case 'r':
5581 recursive = B_TRUE;
5582 break;
5583 case 'H':
5584 scripted = B_TRUE;
5585 break;
5586 case '?':
5587 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5588 optopt);
5589 usage(B_FALSE);
5590 }
5591 }
5592
5593 if (recursive) {
5594 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
5595 flags |= ZFS_ITER_RECURSE;
5596 }
5597
5598 argc -= optind;
5599 argv += optind;
5600
5601 /* check number of arguments */
5602 if (argc < 1)
5603 usage(B_FALSE);
5604
5605 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
5606 nomem();
5607
5608 for (i = 0; i < argc; ++i) {
5609 char *snapshot = argv[i];
5610 const char *delim;
5611 const char *snapname;
5612
5613 delim = strchr(snapshot, '@');
5614 if (delim == NULL) {
5615 (void) fprintf(stderr,
5616 gettext("'%s' is not a snapshot\n"), snapshot);
5617 ++errors;
5618 continue;
5619 }
5620 snapname = delim + 1;
5621 if (recursive)
5622 snapshot[delim - snapshot] = '\0';
5623
5624 cb.cb_recursive = recursive;
5625 cb.cb_snapname = snapname;
5626 cb.cb_nvlp = &nvl;
5627
5628 /*
5629 * 1. collect holds data, set format options
5630 */
5631 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
5632 holds_callback, &cb);
5633 if (ret != 0)
5634 ++errors;
5635 }
5636
5637 /*
5638 * 2. print holds data
5639 */
5640 print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
5641
5642 if (nvlist_empty(nvl))
5643 (void) printf(gettext("no datasets available\n"));
5644
5645 nvlist_free(nvl);
5646
5647 return (0 != errors);
5648 }
5649
5650 #define CHECK_SPINNER 30
5651 #define SPINNER_TIME 3 /* seconds */
5652 #define MOUNT_TIME 5 /* seconds */
5653
5654 static int
5655 get_one_dataset(zfs_handle_t *zhp, void *data)
5656 {
5657 static char *spin[] = { "-", "\\", "|", "/" };
5658 static int spinval = 0;
5659 static int spincheck = 0;
5660 static time_t last_spin_time = (time_t)0;
5661 get_all_cb_t *cbp = data;
5662 zfs_type_t type = zfs_get_type(zhp);
5663
5664 if (cbp->cb_verbose) {
5665 if (--spincheck < 0) {
5666 time_t now = time(NULL);
5667 if (last_spin_time + SPINNER_TIME < now) {
5668 update_progress(spin[spinval++ % 4]);
5669 last_spin_time = now;
5670 }
5671 spincheck = CHECK_SPINNER;
5672 }
5673 }
5674
5675 /*
5676 * Interate over any nested datasets.
5677 */
5678 if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
5679 zfs_close(zhp);
5680 return (1);
5681 }
5682
5683 /*
5684 * Skip any datasets whose type does not match.
5685 */
5686 if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
5687 zfs_close(zhp);
5688 return (0);
5689 }
5690 libzfs_add_handle(cbp, zhp);
5691 assert(cbp->cb_used <= cbp->cb_alloc);
5692
5693 return (0);
5694 }
5695
5696 static void
5697 get_all_datasets(zfs_handle_t ***dslist, size_t *count, boolean_t verbose)
5698 {
5699 get_all_cb_t cb = { 0 };
5700 cb.cb_verbose = verbose;
5701 cb.cb_getone = get_one_dataset;
5702
5703 if (verbose)
5704 set_progress_header(gettext("Reading ZFS config"));
5705 (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
5706
5707 *dslist = cb.cb_handles;
5708 *count = cb.cb_used;
5709
5710 if (verbose)
5711 finish_progress(gettext("done."));
5712 }
5713
5714 /*
5715 * Generic callback for sharing or mounting filesystems. Because the code is so
5716 * similar, we have a common function with an extra parameter to determine which
5717 * mode we are using.
5718 */
5719 #define OP_SHARE 0x1
5720 #define OP_MOUNT 0x2
5721
5722 /*
5723 * Share or mount a dataset.
5724 */
5725 static int
5726 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
5727 boolean_t explicit, const char *options)
5728 {
5729 char mountpoint[ZFS_MAXPROPLEN];
5730 char shareopts[ZFS_MAXPROPLEN];
5731 char smbshareopts[ZFS_MAXPROPLEN];
5732 const char *cmdname = op == OP_SHARE ? "share" : "mount";
5733 struct mnttab mnt;
5734 uint64_t zoned, canmount;
5735 boolean_t shared_nfs, shared_smb;
5736
5737 assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
5738
5739 /*
5740 * Check to make sure we can mount/share this dataset. If we
5741 * are in the global zone and the filesystem is exported to a
5742 * local zone, or if we are in a local zone and the
5743 * filesystem is not exported, then it is an error.
5744 */
5745 zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
5746
5747 if (zoned && getzoneid() == GLOBAL_ZONEID) {
5748 if (!explicit)
5749 return (0);
5750
5751 (void) fprintf(stderr, gettext("cannot %s '%s': "
5752 "dataset is exported to a local zone\n"), cmdname,
5753 zfs_get_name(zhp));
5754 return (1);
5755
5756 } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
5757 if (!explicit)
5758 return (0);
5759
5760 (void) fprintf(stderr, gettext("cannot %s '%s': "
5761 "permission denied\n"), cmdname,
5762 zfs_get_name(zhp));
5763 return (1);
5764 }
5765
5766 /*
5767 * Ignore any filesystems which don't apply to us. This
5768 * includes those with a legacy mountpoint, or those with
5769 * legacy share options.
5770 */
5771 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
5772 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
5773 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
5774 sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
5775 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
5776 sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
5777
5778 if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
5779 strcmp(smbshareopts, "off") == 0) {
5780 if (!explicit)
5781 return (0);
5782
5783 (void) fprintf(stderr, gettext("cannot share '%s': "
5784 "legacy share\n"), zfs_get_name(zhp));
5785 (void) fprintf(stderr, gettext("use share(1M) to "
5786 "share this filesystem, or set "
5787 "sharenfs property on\n"));
5788 return (1);
5789 }
5790
5791 /*
5792 * We cannot share or mount legacy filesystems. If the
5793 * shareopts is non-legacy but the mountpoint is legacy, we
5794 * treat it as a legacy share.
5795 */
5796 if (strcmp(mountpoint, "legacy") == 0) {
5797 if (!explicit)
5798 return (0);
5799
5800 (void) fprintf(stderr, gettext("cannot %s '%s': "
5801 "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
5802 (void) fprintf(stderr, gettext("use %s(1M) to "
5803 "%s this filesystem\n"), cmdname, cmdname);
5804 return (1);
5805 }
5806
5807 if (strcmp(mountpoint, "none") == 0) {
5808 if (!explicit)
5809 return (0);
5810
5811 (void) fprintf(stderr, gettext("cannot %s '%s': no "
5812 "mountpoint set\n"), cmdname, zfs_get_name(zhp));
5813 return (1);
5814 }
5815
5816 /*
5817 * canmount explicit outcome
5818 * on no pass through
5819 * on yes pass through
5820 * off no return 0
5821 * off yes display error, return 1
5822 * noauto no return 0
5823 * noauto yes pass through
5824 */
5825 canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
5826 if (canmount == ZFS_CANMOUNT_OFF) {
5827 if (!explicit)
5828 return (0);
5829
5830 (void) fprintf(stderr, gettext("cannot %s '%s': "
5831 "'canmount' property is set to 'off'\n"), cmdname,
5832 zfs_get_name(zhp));
5833 return (1);
5834 } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
5835 return (0);
5836 }
5837
5838 /*
5839 * If this filesystem is inconsistent and has a receive resume
5840 * token, we can not mount it.
5841 */
5842 if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) &&
5843 zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
5844 NULL, 0, NULL, NULL, 0, B_TRUE) == 0) {
5845 if (!explicit)
5846 return (0);
5847
5848 (void) fprintf(stderr, gettext("cannot %s '%s': "
5849 "Contains partially-completed state from "
5850 "\"zfs receive -r\", which can be resumed with "
5851 "\"zfs send -t\"\n"),
5852 cmdname, zfs_get_name(zhp));
5853 return (1);
5854 }
5855
5856 /*
5857 * At this point, we have verified that the mountpoint and/or
5858 * shareopts are appropriate for auto management. If the
5859 * filesystem is already mounted or shared, return (failing
5860 * for explicit requests); otherwise mount or share the
5861 * filesystem.
5862 */
5863 switch (op) {
5864 case OP_SHARE:
5865
5866 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
5867 shared_smb = zfs_is_shared_smb(zhp, NULL);
5868
5869 if (shared_nfs && shared_smb ||
5870 (shared_nfs && strcmp(shareopts, "on") == 0 &&
5871 strcmp(smbshareopts, "off") == 0) ||
5872 (shared_smb && strcmp(smbshareopts, "on") == 0 &&
5873 strcmp(shareopts, "off") == 0)) {
5874 if (!explicit)
5875 return (0);
5876
5877 (void) fprintf(stderr, gettext("cannot share "
5878 "'%s': filesystem already shared\n"),
5879 zfs_get_name(zhp));
5880 return (1);
5881 }
5882
5883 if (!zfs_is_mounted(zhp, NULL) &&
5884 zfs_mount(zhp, NULL, 0) != 0)
5885 return (1);
5886
5887 if (protocol == NULL) {
5888 if (zfs_shareall(zhp) != 0)
5889 return (1);
5890 } else if (strcmp(protocol, "nfs") == 0) {
5891 if (zfs_share_nfs(zhp))
5892 return (1);
5893 } else if (strcmp(protocol, "smb") == 0) {
5894 if (zfs_share_smb(zhp))
5895 return (1);
5896 } else {
5897 (void) fprintf(stderr, gettext("cannot share "
5898 "'%s': invalid share type '%s' "
5899 "specified\n"),
5900 zfs_get_name(zhp), protocol);
5901 return (1);
5902 }
5903
5904 break;
5905
5906 case OP_MOUNT:
5907 if (options == NULL)
5908 mnt.mnt_mntopts = "";
5909 else
5910 mnt.mnt_mntopts = (char *)options;
5911
5912 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
5913 zfs_is_mounted(zhp, NULL)) {
5914 if (!explicit)
5915 return (0);
5916
5917 (void) fprintf(stderr, gettext("cannot mount "
5918 "'%s': filesystem already mounted\n"),
5919 zfs_get_name(zhp));
5920 return (1);
5921 }
5922
5923 if (zfs_mount(zhp, options, flags) != 0)
5924 return (1);
5925 break;
5926 }
5927
5928 return (0);
5929 }
5930
5931 /*
5932 * Reports progress in the form "(current/total)". Not thread-safe.
5933 */
5934 static void
5935 report_mount_progress(int current, int total)
5936 {
5937 static time_t last_progress_time = 0;
5938 time_t now = time(NULL);
5939 char info[32];
5940
5941 /* report 1..n instead of 0..n-1 */
5942 ++current;
5943
5944 /* display header if we're here for the first time */
5945 if (current == 1) {
5946 set_progress_header(gettext("Mounting ZFS filesystems"));
5947 } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
5948 /* too soon to report again */
5949 return;
5950 }
5951
5952 last_progress_time = now;
5953
5954 (void) sprintf(info, "(%d/%d)", current, total);
5955
5956 if (current == total)
5957 finish_progress(info);
5958 else
5959 update_progress(info);
5960 }
5961
5962 static void
5963 append_options(char *mntopts, char *newopts)
5964 {
5965 int len = strlen(mntopts);
5966
5967 /* original length plus new string to append plus 1 for the comma */
5968 if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
5969 (void) fprintf(stderr, gettext("the opts argument for "
5970 "'%c' option is too long (more than %d chars)\n"),
5971 "-o", MNT_LINE_MAX);
5972 usage(B_FALSE);
5973 }
5974
5975 if (*mntopts)
5976 mntopts[len++] = ',';
5977
5978 (void) strcpy(&mntopts[len], newopts);
5979 }
5980
5981 static int
5982 share_mount(int op, int argc, char **argv)
5983 {
5984 int do_all = 0;
5985 boolean_t verbose = B_FALSE;
5986 int c, ret = 0;
5987 char *options = NULL;
5988 int flags = 0;
5989
5990 /* check options */
5991 while ((c = getopt(argc, argv, op == OP_MOUNT ? ":avo:O" : "a"))
5992 != -1) {
5993 switch (c) {
5994 case 'a':
5995 do_all = 1;
5996 break;
5997 case 'v':
5998 verbose = B_TRUE;
5999 break;
6000 case 'o':
6001 if (*optarg == '\0') {
6002 (void) fprintf(stderr, gettext("empty mount "
6003 "options (-o) specified\n"));
6004 usage(B_FALSE);
6005 }
6006
6007 if (options == NULL)
6008 options = safe_malloc(MNT_LINE_MAX + 1);
6009
6010 /* option validation is done later */
6011 append_options(options, optarg);
6012 break;
6013
6014 case 'O':
6015 flags |= MS_OVERLAY;
6016 break;
6017 case ':':
6018 (void) fprintf(stderr, gettext("missing argument for "
6019 "'%c' option\n"), optopt);
6020 usage(B_FALSE);
6021 break;
6022 case '?':
6023 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6024 optopt);
6025 usage(B_FALSE);
6026 }
6027 }
6028
6029 argc -= optind;
6030 argv += optind;
6031
6032 /* check number of arguments */
6033 if (do_all) {
6034 zfs_handle_t **dslist = NULL;
6035 size_t i, count = 0;
6036 char *protocol = NULL;
6037
6038 if (op == OP_SHARE && argc > 0) {
6039 if (strcmp(argv[0], "nfs") != 0 &&
6040 strcmp(argv[0], "smb") != 0) {
6041 (void) fprintf(stderr, gettext("share type "
6042 "must be 'nfs' or 'smb'\n"));
6043 usage(B_FALSE);
6044 }
6045 protocol = argv[0];
6046 argc--;
6047 argv++;
6048 }
6049
6050 if (argc != 0) {
6051 (void) fprintf(stderr, gettext("too many arguments\n"));
6052 usage(B_FALSE);
6053 }
6054
6055 start_progress_timer();
6056 get_all_datasets(&dslist, &count, verbose);
6057
6058 if (count == 0)
6059 return (0);
6060
6061 qsort(dslist, count, sizeof (void *), libzfs_dataset_cmp);
6062
6063 for (i = 0; i < count; i++) {
6064 if (verbose)
6065 report_mount_progress(i, count);
6066
6067 if (share_mount_one(dslist[i], op, flags, protocol,
6068 B_FALSE, options) != 0)
6069 ret = 1;
6070 zfs_close(dslist[i]);
6071 }
6072
6073 free(dslist);
6074 } else if (argc == 0) {
6075 struct mnttab entry;
6076
6077 if ((op == OP_SHARE) || (options != NULL)) {
6078 (void) fprintf(stderr, gettext("missing filesystem "
6079 "argument (specify -a for all)\n"));
6080 usage(B_FALSE);
6081 }
6082
6083 /*
6084 * When mount is given no arguments, go through /etc/mnttab and
6085 * display any active ZFS mounts. We hide any snapshots, since
6086 * they are controlled automatically.
6087 */
6088 rewind(mnttab_file);
6089 while (getmntent(mnttab_file, &entry) == 0) {
6090 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
6091 strchr(entry.mnt_special, '@') != NULL)
6092 continue;
6093
6094 (void) printf("%-30s %s\n", entry.mnt_special,
6095 entry.mnt_mountp);
6096 }
6097
6098 } else {
6099 zfs_handle_t *zhp;
6100
6101 if (argc > 1) {
6102 (void) fprintf(stderr,
6103 gettext("too many arguments\n"));
6104 usage(B_FALSE);
6105 }
6106
6107 if ((zhp = zfs_open(g_zfs, argv[0],
6108 ZFS_TYPE_FILESYSTEM)) == NULL) {
6109 ret = 1;
6110 } else {
6111 ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
6112 options);
6113 zfs_close(zhp);
6114 }
6115 }
6116
6117 return (ret);
6118 }
6119
6120 /*
6121 * zfs mount -a [nfs]
6122 * zfs mount filesystem
6123 *
6124 * Mount all filesystems, or mount the given filesystem.
6125 */
6126 static int
6127 zfs_do_mount(int argc, char **argv)
6128 {
6129 return (share_mount(OP_MOUNT, argc, argv));
6130 }
6131
6132 /*
6133 * zfs share -a [nfs | smb]
6134 * zfs share filesystem
6135 *
6136 * Share all filesystems, or share the given filesystem.
6137 */
6138 static int
6139 zfs_do_share(int argc, char **argv)
6140 {
6141 return (share_mount(OP_SHARE, argc, argv));
6142 }
6143
6144 typedef struct unshare_unmount_node {
6145 zfs_handle_t *un_zhp;
6146 char *un_mountp;
6147 uu_avl_node_t un_avlnode;
6148 } unshare_unmount_node_t;
6149
6150 /* ARGSUSED */
6151 static int
6152 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
6153 {
6154 const unshare_unmount_node_t *l = larg;
6155 const unshare_unmount_node_t *r = rarg;
6156
6157 return (strcmp(l->un_mountp, r->un_mountp));
6158 }
6159
6160 /*
6161 * Convenience routine used by zfs_do_umount() and manual_unmount(). Given an
6162 * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
6163 * and unmount it appropriately.
6164 */
6165 static int
6166 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
6167 {
6168 zfs_handle_t *zhp;
6169 int ret = 0;
6170 struct stat64 statbuf;
6171 struct extmnttab entry;
6172 const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
6173 ino_t path_inode;
6174
6175 /*
6176 * Search for the path in /etc/mnttab. Rather than looking for the
6177 * specific path, which can be fooled by non-standard paths (i.e. ".."
6178 * or "//"), we stat() the path and search for the corresponding
6179 * (major,minor) device pair.
6180 */
6181 if (stat64(path, &statbuf) != 0) {
6182 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6183 cmdname, path, strerror(errno));
6184 return (1);
6185 }
6186 path_inode = statbuf.st_ino;
6187
6188 /*
6189 * Search for the given (major,minor) pair in the mount table.
6190 */
6191 rewind(mnttab_file);
6192 while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6193 if (entry.mnt_major == major(statbuf.st_dev) &&
6194 entry.mnt_minor == minor(statbuf.st_dev))
6195 break;
6196 }
6197 if (ret != 0) {
6198 if (op == OP_SHARE) {
6199 (void) fprintf(stderr, gettext("cannot %s '%s': not "
6200 "currently mounted\n"), cmdname, path);
6201 return (1);
6202 }
6203 (void) fprintf(stderr, gettext("warning: %s not in mnttab\n"),
6204 path);
6205 if ((ret = umount2(path, flags)) != 0)
6206 (void) fprintf(stderr, gettext("%s: %s\n"), path,
6207 strerror(errno));
6208 return (ret != 0);
6209 }
6210
6211 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6212 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6213 "filesystem\n"), cmdname, path);
6214 return (1);
6215 }
6216
6217 if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6218 ZFS_TYPE_FILESYSTEM)) == NULL)
6219 return (1);
6220
6221 ret = 1;
6222 if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6223 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6224 cmdname, path, strerror(errno));
6225 goto out;
6226 } else if (statbuf.st_ino != path_inode) {
6227 (void) fprintf(stderr, gettext("cannot "
6228 "%s '%s': not a mountpoint\n"), cmdname, path);
6229 goto out;
6230 }
6231
6232 if (op == OP_SHARE) {
6233 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6234 char smbshare_prop[ZFS_MAXPROPLEN];
6235
6236 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6237 sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6238 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6239 sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6240
6241 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6242 strcmp(smbshare_prop, "off") == 0) {
6243 (void) fprintf(stderr, gettext("cannot unshare "
6244 "'%s': legacy share\n"), path);
6245 (void) fprintf(stderr, gettext("use "
6246 "unshare(1M) to unshare this filesystem\n"));
6247 } else if (!zfs_is_shared(zhp)) {
6248 (void) fprintf(stderr, gettext("cannot unshare '%s': "
6249 "not currently shared\n"), path);
6250 } else {
6251 ret = zfs_unshareall_bypath(zhp, path);
6252 }
6253 } else {
6254 char mtpt_prop[ZFS_MAXPROPLEN];
6255
6256 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6257 sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6258
6259 if (is_manual) {
6260 ret = zfs_unmount(zhp, NULL, flags);
6261 } else if (strcmp(mtpt_prop, "legacy") == 0) {
6262 (void) fprintf(stderr, gettext("cannot unmount "
6263 "'%s': legacy mountpoint\n"),
6264 zfs_get_name(zhp));
6265 (void) fprintf(stderr, gettext("use umount(1M) "
6266 "to unmount this filesystem\n"));
6267 } else {
6268 ret = zfs_unmountall(zhp, flags);
6269 }
6270 }
6271
6272 out:
6273 zfs_close(zhp);
6274
6275 return (ret != 0);
6276 }
6277
6278 /*
6279 * Generic callback for unsharing or unmounting a filesystem.
6280 */
6281 static int
6282 unshare_unmount(int op, int argc, char **argv)
6283 {
6284 int do_all = 0;
6285 int flags = 0;
6286 int ret = 0;
6287 int c;
6288 zfs_handle_t *zhp;
6289 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6290 char sharesmb[ZFS_MAXPROPLEN];
6291
6292 /* check options */
6293 while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
6294 switch (c) {
6295 case 'a':
6296 do_all = 1;
6297 break;
6298 case 'f':
6299 flags = MS_FORCE;
6300 break;
6301 case '?':
6302 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6303 optopt);
6304 usage(B_FALSE);
6305 }
6306 }
6307
6308 argc -= optind;
6309 argv += optind;
6310
6311 if (do_all) {
6312 /*
6313 * We could make use of zfs_for_each() to walk all datasets in
6314 * the system, but this would be very inefficient, especially
6315 * since we would have to linearly search /etc/mnttab for each
6316 * one. Instead, do one pass through /etc/mnttab looking for
6317 * zfs entries and call zfs_unmount() for each one.
6318 *
6319 * Things get a little tricky if the administrator has created
6320 * mountpoints beneath other ZFS filesystems. In this case, we
6321 * have to unmount the deepest filesystems first. To accomplish
6322 * this, we place all the mountpoints in an AVL tree sorted by
6323 * the special type (dataset name), and walk the result in
6324 * reverse to make sure to get any snapshots first.
6325 */
6326 struct mnttab entry;
6327 uu_avl_pool_t *pool;
6328 uu_avl_t *tree;
6329 unshare_unmount_node_t *node;
6330 uu_avl_index_t idx;
6331 uu_avl_walk_t *walk;
6332
6333 if (argc != 0) {
6334 (void) fprintf(stderr, gettext("too many arguments\n"));
6335 usage(B_FALSE);
6336 }
6337
6338 if (((pool = uu_avl_pool_create("unmount_pool",
6339 sizeof (unshare_unmount_node_t),
6340 offsetof(unshare_unmount_node_t, un_avlnode),
6341 unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6342 ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6343 nomem();
6344
6345 rewind(mnttab_file);
6346 while (getmntent(mnttab_file, &entry) == 0) {
6347
6348 /* ignore non-ZFS entries */
6349 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6350 continue;
6351
6352 /* ignore snapshots */
6353 if (strchr(entry.mnt_special, '@') != NULL)
6354 continue;
6355
6356 if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6357 ZFS_TYPE_FILESYSTEM)) == NULL) {
6358 ret = 1;
6359 continue;
6360 }
6361
6362 switch (op) {
6363 case OP_SHARE:
6364 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6365 nfs_mnt_prop,
6366 sizeof (nfs_mnt_prop),
6367 NULL, NULL, 0, B_FALSE) == 0);
6368 if (strcmp(nfs_mnt_prop, "off") != 0)
6369 break;
6370 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6371 nfs_mnt_prop,
6372 sizeof (nfs_mnt_prop),
6373 NULL, NULL, 0, B_FALSE) == 0);
6374 if (strcmp(nfs_mnt_prop, "off") == 0)
6375 continue;
6376 break;
6377 case OP_MOUNT:
6378 /* Ignore legacy mounts */
6379 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6380 nfs_mnt_prop,
6381 sizeof (nfs_mnt_prop),
6382 NULL, NULL, 0, B_FALSE) == 0);
6383 if (strcmp(nfs_mnt_prop, "legacy") == 0)
6384 continue;
6385 /* Ignore canmount=noauto mounts */
6386 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6387 ZFS_CANMOUNT_NOAUTO)
6388 continue;
6389 default:
6390 break;
6391 }
6392
6393 node = safe_malloc(sizeof (unshare_unmount_node_t));
6394 node->un_zhp = zhp;
6395 node->un_mountp = safe_strdup(entry.mnt_mountp);
6396
6397 uu_avl_node_init(node, &node->un_avlnode, pool);
6398
6399 if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6400 uu_avl_insert(tree, node, idx);
6401 } else {
6402 zfs_close(node->un_zhp);
6403 free(node->un_mountp);
6404 free(node);
6405 }
6406 }
6407
6408 /*
6409 * Walk the AVL tree in reverse, unmounting each filesystem and
6410 * removing it from the AVL tree in the process.
6411 */
6412 if ((walk = uu_avl_walk_start(tree,
6413 UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6414 nomem();
6415
6416 while ((node = uu_avl_walk_next(walk)) != NULL) {
6417 uu_avl_remove(tree, node);
6418
6419 switch (op) {
6420 case OP_SHARE:
6421 if (zfs_unshareall_bypath(node->un_zhp,
6422 node->un_mountp) != 0)
6423 ret = 1;
6424 break;
6425
6426 case OP_MOUNT:
6427 if (zfs_unmount(node->un_zhp,
6428 node->un_mountp, flags) != 0)
6429 ret = 1;
6430 break;
6431 }
6432
6433 zfs_close(node->un_zhp);
6434 free(node->un_mountp);
6435 free(node);
6436 }
6437
6438 uu_avl_walk_end(walk);
6439 uu_avl_destroy(tree);
6440 uu_avl_pool_destroy(pool);
6441
6442 } else {
6443 if (argc != 1) {
6444 if (argc == 0)
6445 (void) fprintf(stderr,
6446 gettext("missing filesystem argument\n"));
6447 else
6448 (void) fprintf(stderr,
6449 gettext("too many arguments\n"));
6450 usage(B_FALSE);
6451 }
6452
6453 /*
6454 * We have an argument, but it may be a full path or a ZFS
6455 * filesystem. Pass full paths off to unmount_path() (shared by
6456 * manual_unmount), otherwise open the filesystem and pass to
6457 * zfs_unmount().
6458 */
6459 if (argv[0][0] == '/')
6460 return (unshare_unmount_path(op, argv[0],
6461 flags, B_FALSE));
6462
6463 if ((zhp = zfs_open(g_zfs, argv[0],
6464 ZFS_TYPE_FILESYSTEM)) == NULL)
6465 return (1);
6466
6467 verify(zfs_prop_get(zhp, op == OP_SHARE ?
6468 ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
6469 nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
6470 NULL, 0, B_FALSE) == 0);
6471
6472 switch (op) {
6473 case OP_SHARE:
6474 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6475 nfs_mnt_prop,
6476 sizeof (nfs_mnt_prop),
6477 NULL, NULL, 0, B_FALSE) == 0);
6478 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6479 sharesmb, sizeof (sharesmb), NULL, NULL,
6480 0, B_FALSE) == 0);
6481
6482 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6483 strcmp(sharesmb, "off") == 0) {
6484 (void) fprintf(stderr, gettext("cannot "
6485 "unshare '%s': legacy share\n"),
6486 zfs_get_name(zhp));
6487 (void) fprintf(stderr, gettext("use "
6488 "unshare(1M) to unshare this "
6489 "filesystem\n"));
6490 ret = 1;
6491 } else if (!zfs_is_shared(zhp)) {
6492 (void) fprintf(stderr, gettext("cannot "
6493 "unshare '%s': not currently "
6494 "shared\n"), zfs_get_name(zhp));
6495 ret = 1;
6496 } else if (zfs_unshareall(zhp) != 0) {
6497 ret = 1;
6498 }
6499 break;
6500
6501 case OP_MOUNT:
6502 if (strcmp(nfs_mnt_prop, "legacy") == 0) {
6503 (void) fprintf(stderr, gettext("cannot "
6504 "unmount '%s': legacy "
6505 "mountpoint\n"), zfs_get_name(zhp));
6506 (void) fprintf(stderr, gettext("use "
6507 "umount(1M) to unmount this "
6508 "filesystem\n"));
6509 ret = 1;
6510 } else if (!zfs_is_mounted(zhp, NULL)) {
6511 (void) fprintf(stderr, gettext("cannot "
6512 "unmount '%s': not currently "
6513 "mounted\n"),
6514 zfs_get_name(zhp));
6515 ret = 1;
6516 } else if (zfs_unmountall(zhp, flags) != 0) {
6517 ret = 1;
6518 }
6519 break;
6520 }
6521
6522 zfs_close(zhp);
6523 }
6524
6525 return (ret);
6526 }
6527
6528 /*
6529 * zfs unmount -a
6530 * zfs unmount filesystem
6531 *
6532 * Unmount all filesystems, or a specific ZFS filesystem.
6533 */
6534 static int
6535 zfs_do_unmount(int argc, char **argv)
6536 {
6537 return (unshare_unmount(OP_MOUNT, argc, argv));
6538 }
6539
6540 /*
6541 * zfs unshare -a
6542 * zfs unshare filesystem
6543 *
6544 * Unshare all filesystems, or a specific ZFS filesystem.
6545 */
6546 static int
6547 zfs_do_unshare(int argc, char **argv)
6548 {
6549 return (unshare_unmount(OP_SHARE, argc, argv));
6550 }
6551
6552 /*
6553 * Called when invoked as /etc/fs/zfs/mount. Do the mount if the mountpoint is
6554 * 'legacy'. Otherwise, complain that use should be using 'zfs mount'.
6555 */
6556 static int
6557 manual_mount(int argc, char **argv)
6558 {
6559 zfs_handle_t *zhp;
6560 char mountpoint[ZFS_MAXPROPLEN];
6561 char mntopts[MNT_LINE_MAX] = { '\0' };
6562 int ret = 0;
6563 int c;
6564 int flags = 0;
6565 char *dataset, *path;
6566
6567 /* check options */
6568 while ((c = getopt(argc, argv, ":mo:O")) != -1) {
6569 switch (c) {
6570 case 'o':
6571 (void) strlcpy(mntopts, optarg, sizeof (mntopts));
6572 break;
6573 case 'O':
6574 flags |= MS_OVERLAY;
6575 break;
6576 case 'm':
6577 flags |= MS_NOMNTTAB;
6578 break;
6579 case ':':
6580 (void) fprintf(stderr, gettext("missing argument for "
6581 "'%c' option\n"), optopt);
6582 usage(B_FALSE);
6583 break;
6584 case '?':
6585 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6586 optopt);
6587 (void) fprintf(stderr, gettext("usage: mount [-o opts] "
6588 "<path>\n"));
6589 return (2);
6590 }
6591 }
6592
6593 argc -= optind;
6594 argv += optind;
6595
6596 /* check that we only have two arguments */
6597 if (argc != 2) {
6598 if (argc == 0)
6599 (void) fprintf(stderr, gettext("missing dataset "
6600 "argument\n"));
6601 else if (argc == 1)
6602 (void) fprintf(stderr,
6603 gettext("missing mountpoint argument\n"));
6604 else
6605 (void) fprintf(stderr, gettext("too many arguments\n"));
6606 (void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
6607 return (2);
6608 }
6609
6610 dataset = argv[0];
6611 path = argv[1];
6612
6613 /* try to open the dataset */
6614 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
6615 return (1);
6616
6617 (void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
6618 sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
6619
6620 /* check for legacy mountpoint and complain appropriately */
6621 ret = 0;
6622 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
6623 if (mount(dataset, path, MS_OPTIONSTR | flags, MNTTYPE_ZFS,
6624 NULL, 0, mntopts, sizeof (mntopts)) != 0) {
6625 (void) fprintf(stderr, gettext("mount failed: %s\n"),
6626 strerror(errno));
6627 ret = 1;
6628 }
6629 } else {
6630 (void) fprintf(stderr, gettext("filesystem '%s' cannot be "
6631 "mounted using 'mount -F zfs'\n"), dataset);
6632 (void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
6633 "instead.\n"), path);
6634 (void) fprintf(stderr, gettext("If you must use 'mount -F zfs' "
6635 "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n"));
6636 (void) fprintf(stderr, gettext("See zfs(1M) for more "
6637 "information.\n"));
6638 ret = 1;
6639 }
6640
6641 return (ret);
6642 }
6643
6644 /*
6645 * Called when invoked as /etc/fs/zfs/umount. Unlike a manual mount, we allow
6646 * unmounts of non-legacy filesystems, as this is the dominant administrative
6647 * interface.
6648 */
6649 static int
6650 manual_unmount(int argc, char **argv)
6651 {
6652 int flags = 0;
6653 int c;
6654
6655 /* check options */
6656 while ((c = getopt(argc, argv, "f")) != -1) {
6657 switch (c) {
6658 case 'f':
6659 flags = MS_FORCE;
6660 break;
6661 case '?':
6662 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6663 optopt);
6664 (void) fprintf(stderr, gettext("usage: unmount [-f] "
6665 "<path>\n"));
6666 return (2);
6667 }
6668 }
6669
6670 argc -= optind;
6671 argv += optind;
6672
6673 /* check arguments */
6674 if (argc != 1) {
6675 if (argc == 0)
6676 (void) fprintf(stderr, gettext("missing path "
6677 "argument\n"));
6678 else
6679 (void) fprintf(stderr, gettext("too many arguments\n"));
6680 (void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
6681 return (2);
6682 }
6683
6684 return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
6685 }
6686
6687 static int
6688 find_command_idx(char *command, int *idx)
6689 {
6690 int i;
6691
6692 for (i = 0; i < NCOMMAND; i++) {
6693 if (command_table[i].name == NULL)
6694 continue;
6695
6696 if (strcmp(command, command_table[i].name) == 0) {
6697 *idx = i;
6698 return (0);
6699 }
6700 }
6701 return (1);
6702 }
6703
6704 static int
6705 zfs_do_diff(int argc, char **argv)
6706 {
6707 zfs_handle_t *zhp;
6708 int flags = 0;
6709 char *tosnap = NULL;
6710 char *fromsnap = NULL;
6711 char *atp, *copy;
6712 int err = 0;
6713 int c;
6714
6715 while ((c = getopt(argc, argv, "FHt")) != -1) {
6716 switch (c) {
6717 case 'F':
6718 flags |= ZFS_DIFF_CLASSIFY;
6719 break;
6720 case 'H':
6721 flags |= ZFS_DIFF_PARSEABLE;
6722 break;
6723 case 't':
6724 flags |= ZFS_DIFF_TIMESTAMP;
6725 break;
6726 default:
6727 (void) fprintf(stderr,
6728 gettext("invalid option '%c'\n"), optopt);
6729 usage(B_FALSE);
6730 }
6731 }
6732
6733 argc -= optind;
6734 argv += optind;
6735
6736 if (argc < 1) {
6737 (void) fprintf(stderr,
6738 gettext("must provide at least one snapshot name\n"));
6739 usage(B_FALSE);
6740 }
6741
6742 if (argc > 2) {
6743 (void) fprintf(stderr, gettext("too many arguments\n"));
6744 usage(B_FALSE);
6745 }
6746
6747 fromsnap = argv[0];
6748 tosnap = (argc == 2) ? argv[1] : NULL;
6749
6750 copy = NULL;
6751 if (*fromsnap != '@')
6752 copy = strdup(fromsnap);
6753 else if (tosnap)
6754 copy = strdup(tosnap);
6755 if (copy == NULL)
6756 usage(B_FALSE);
6757
6758 if (atp = strchr(copy, '@'))
6759 *atp = '\0';
6760
6761 if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL)
6762 return (1);
6763
6764 free(copy);
6765
6766 /*
6767 * Ignore SIGPIPE so that the library can give us
6768 * information on any failure
6769 */
6770 (void) sigignore(SIGPIPE);
6771
6772 err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
6773
6774 zfs_close(zhp);
6775
6776 return (err != 0);
6777 }
6778
6779 /*
6780 * zfs bookmark <fs@snap> <fs#bmark>
6781 *
6782 * Creates a bookmark with the given name from the given snapshot.
6783 */
6784 static int
6785 zfs_do_bookmark(int argc, char **argv)
6786 {
6787 char snapname[ZFS_MAXNAMELEN];
6788 zfs_handle_t *zhp;
6789 nvlist_t *nvl;
6790 int ret = 0;
6791 int c;
6792
6793 /* check options */
6794 while ((c = getopt(argc, argv, "")) != -1) {
6795 switch (c) {
6796 case '?':
6797 (void) fprintf(stderr,
6798 gettext("invalid option '%c'\n"), optopt);
6799 goto usage;
6800 }
6801 }
6802
6803 argc -= optind;
6804 argv += optind;
6805
6806 /* check number of arguments */
6807 if (argc < 1) {
6808 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
6809 goto usage;
6810 }
6811 if (argc < 2) {
6812 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
6813 goto usage;
6814 }
6815
6816 if (strchr(argv[1], '#') == NULL) {
6817 (void) fprintf(stderr,
6818 gettext("invalid bookmark name '%s' -- "
6819 "must contain a '#'\n"), argv[1]);
6820 goto usage;
6821 }
6822
6823 if (argv[0][0] == '@') {
6824 /*
6825 * Snapshot name begins with @.
6826 * Default to same fs as bookmark.
6827 */
6828 (void) strncpy(snapname, argv[1], sizeof (snapname));
6829 *strchr(snapname, '#') = '\0';
6830 (void) strlcat(snapname, argv[0], sizeof (snapname));
6831 } else {
6832 (void) strncpy(snapname, argv[0], sizeof (snapname));
6833 }
6834 zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
6835 if (zhp == NULL)
6836 goto usage;
6837 zfs_close(zhp);
6838
6839
6840 nvl = fnvlist_alloc();
6841 fnvlist_add_string(nvl, argv[1], snapname);
6842 ret = lzc_bookmark(nvl, NULL);
6843 fnvlist_free(nvl);
6844
6845 if (ret != 0) {
6846 const char *err_msg;
6847 char errbuf[1024];
6848
6849 (void) snprintf(errbuf, sizeof (errbuf),
6850 dgettext(TEXT_DOMAIN,
6851 "cannot create bookmark '%s'"), argv[1]);
6852
6853 switch (ret) {
6854 case EXDEV:
6855 err_msg = "bookmark is in a different pool";
6856 break;
6857 case EEXIST:
6858 err_msg = "bookmark exists";
6859 break;
6860 case EINVAL:
6861 err_msg = "invalid argument";
6862 break;
6863 case ENOTSUP:
6864 err_msg = "bookmark feature not enabled";
6865 break;
6866 case ENOSPC:
6867 err_msg = "out of space";
6868 break;
6869 default:
6870 err_msg = "unknown error";
6871 break;
6872 }
6873 (void) fprintf(stderr, "%s: %s\n", errbuf,
6874 dgettext(TEXT_DOMAIN, err_msg));
6875 }
6876
6877 return (ret != 0);
6878
6879 usage:
6880 usage(B_FALSE);
6881 return (-1);
6882 }
6883
6884 int
6885 main(int argc, char **argv)
6886 {
6887 int ret = 0;
6888 int i;
6889 char *progname;
6890 char *cmdname;
6891
6892 (void) setlocale(LC_ALL, "");
6893 (void) textdomain(TEXT_DOMAIN);
6894
6895 opterr = 0;
6896
6897 if ((g_zfs = libzfs_init()) == NULL) {
6898 (void) fprintf(stderr, gettext("internal error: failed to "
6899 "initialize ZFS library\n"));
6900 return (1);
6901 }
6902
6903 zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
6904
6905 libzfs_print_on_error(g_zfs, B_TRUE);
6906
6907 if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
6908 (void) fprintf(stderr, gettext("internal error: unable to "
6909 "open %s\n"), MNTTAB);
6910 return (1);
6911 }
6912
6913 /*
6914 * This command also doubles as the /etc/fs mount and unmount program.
6915 * Determine if we should take this behavior based on argv[0].
6916 */
6917 progname = basename(argv[0]);
6918 if (strcmp(progname, "mount") == 0) {
6919 ret = manual_mount(argc, argv);
6920 } else if (strcmp(progname, "umount") == 0) {
6921 ret = manual_unmount(argc, argv);
6922 } else {
6923 /*
6924 * Make sure the user has specified some command.
6925 */
6926 if (argc < 2) {
6927 (void) fprintf(stderr, gettext("missing command\n"));
6928 usage(B_FALSE);
6929 }
6930
6931 cmdname = argv[1];
6932
6933 /*
6934 * The 'umount' command is an alias for 'unmount'
6935 */
6936 if (strcmp(cmdname, "umount") == 0)
6937 cmdname = "unmount";
6938
6939 /*
6940 * The 'recv' command is an alias for 'receive'
6941 */
6942 if (strcmp(cmdname, "recv") == 0)
6943 cmdname = "receive";
6944
6945 /*
6946 * The 'snap' command is an alias for 'snapshot'
6947 */
6948 if (strcmp(cmdname, "snap") == 0)
6949 cmdname = "snapshot";
6950
6951 /*
6952 * Special case '-?'
6953 */
6954 if (strcmp(cmdname, "-?") == 0)
6955 usage(B_TRUE);
6956
6957 /*
6958 * Run the appropriate command.
6959 */
6960 libzfs_mnttab_cache(g_zfs, B_TRUE);
6961 if (find_command_idx(cmdname, &i) == 0) {
6962 current_command = &command_table[i];
6963 ret = command_table[i].func(argc - 1, argv + 1);
6964 } else if (strchr(cmdname, '=') != NULL) {
6965 verify(find_command_idx("set", &i) == 0);
6966 current_command = &command_table[i];
6967 ret = command_table[i].func(argc, argv);
6968 } else {
6969 (void) fprintf(stderr, gettext("unrecognized "
6970 "command '%s'\n"), cmdname);
6971 usage(B_FALSE);
6972 }
6973 libzfs_mnttab_cache(g_zfs, B_FALSE);
6974 }
6975
6976 (void) fclose(mnttab_file);
6977
6978 if (ret == 0 && log_history)
6979 (void) zpool_log_history(g_zfs, history_str);
6980
6981 libzfs_fini(g_zfs);
6982
6983 /*
6984 * The 'ZFS_ABORT' environment variable causes us to dump core on exit
6985 * for the purposes of running ::findleaks.
6986 */
6987 if (getenv("ZFS_ABORT") != NULL) {
6988 (void) printf("dumping core by request\n");
6989 abort();
6990 }
6991
6992 return (ret);
6993 }