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