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