xref: /titanic_41/usr/src/cmd/beadm/beadm.c (revision e0724c534a46ca4754330bc022bf1e2a68f5bb93)
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) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
24  */
25 
26 /*
27  * Copyright 2012 Nexenta Systems, Inc. All rights reserved.
28  */
29 
30 /*
31  * System includes
32  */
33 
34 #include <assert.h>
35 #include <stdio.h>
36 #include <strings.h>
37 #include <libzfs.h>
38 #include <locale.h>
39 #include <langinfo.h>
40 #include <stdlib.h>
41 #include <wchar.h>
42 #include <sys/types.h>
43 
44 #include "libbe.h"
45 
46 #ifndef lint
47 #define	_(x) gettext(x)
48 #else
49 #define	_(x) (x)
50 #endif
51 
52 #ifndef TEXT_DOMAIN
53 #define	TEXT_DOMAIN "SYS_TEST"
54 #endif
55 
56 #define	DT_BUF_LEN (128)
57 #define	NUM_COLS (6)
58 
59 static int be_do_activate(int argc, char **argv);
60 static int be_do_create(int argc, char **argv);
61 static int be_do_destroy(int argc, char **argv);
62 static int be_do_list(int argc, char **argv);
63 static int be_do_mount(int argc, char **argv);
64 static int be_do_unmount(int argc, char **argv);
65 static int be_do_rename(int argc, char **argv);
66 static int be_do_rollback(int argc, char **argv);
67 static void usage(void);
68 
69 /*
70  * single column name/width output format description
71  */
72 struct col_info {
73 	const char *col_name;
74 	size_t width;
75 };
76 
77 /*
78  * all columns output format
79  */
80 struct hdr_info {
81 	struct col_info cols[NUM_COLS];
82 };
83 
84 /*
85  * type of possible output formats
86  */
87 enum be_fmt {
88 	BE_FMT_DEFAULT,
89 	BE_FMT_DATASET,
90 	BE_FMT_SNAPSHOT,
91 	BE_FMT_ALL
92 };
93 
94 /*
95  * command handler description
96  */
97 typedef struct be_command {
98 	const char	*name;
99 	int		(*func)(int argc, char **argv);
100 } be_command_t;
101 
102 /*
103  * sorted list of be commands
104  */
105 static const be_command_t be_command_tbl[] = {
106 	{ "activate",		be_do_activate },
107 	{ "create",		be_do_create },
108 	{ "destroy",		be_do_destroy },
109 	{ "list",		be_do_list },
110 	{ "mount",		be_do_mount },
111 	{ "unmount",		be_do_unmount },
112 	{ "umount",		be_do_unmount }, /* unmount alias */
113 	{ "rename",		be_do_rename },
114 	{ "rollback",		be_do_rollback },
115 	{ NULL,			NULL },
116 };
117 
118 static void
119 usage(void)
120 {
121 	(void) fprintf(stderr, _("usage:\n"
122 	    "\tbeadm subcommand cmd_options\n"
123 	    "\n"
124 	    "\tsubcommands:\n"
125 	    "\n"
126 	    "\tbeadm activate [-v] beName\n"
127 	    "\tbeadm create [-a] [-d BE_desc]\n"
128 	    "\t\t[-o property=value] ... [-p zpool] \n"
129 	    "\t\t[-e nonActiveBe | beName@snapshot] [-v] beName\n"
130 	    "\tbeadm create [-d BE_desc]\n"
131 	    "\t\t[-o property=value] ... [-p zpool] [-v] beName@snapshot\n"
132 	    "\tbeadm destroy [-Ffsv] beName \n"
133 	    "\tbeadm destroy [-Fv] beName@snapshot \n"
134 	    "\tbeadm list [[-a] | [-d] [-s]] [-H] [-v] [beName]\n"
135 	    "\tbeadm mount [-s ro|rw] [-v] beName [mountpoint]\n"
136 	    "\tbeadm unmount [-fv] beName | mountpoint\n"
137 	    "\tbeadm umount [-fv] beName | mountpoint\n"
138 	    "\tbeadm rename [-v] origBeName newBeName\n"
139 	    "\tbeadm rollback [-v] beName snapshot\n"
140 	    "\tbeadm rollback [-v] beName@snapshot\n"));
141 }
142 
143 static int
144 run_be_cmd(const char *cmdname, int argc, char **argv)
145 {
146 	const be_command_t *command;
147 
148 	for (command = &be_command_tbl[0]; command->name != NULL; command++)
149 		if (strcmp(command->name, cmdname) == 0)
150 			return (command->func(argc, argv));
151 
152 	(void) fprintf(stderr, _("Invalid command: %s\n"), cmdname);
153 	usage();
154 	return (1);
155 }
156 
157 int
158 main(int argc, char **argv)
159 {
160 	const char *cmdname;
161 
162 	(void) setlocale(LC_ALL, "");
163 	(void) textdomain(TEXT_DOMAIN);
164 
165 	if (argc < 2) {
166 		usage();
167 		return (1);
168 	}
169 
170 	cmdname = argv[1];
171 
172 	/* Turn error printing off */
173 	libbe_print_errors(B_FALSE);
174 
175 	return (run_be_cmd(cmdname, --argc, ++argv));
176 }
177 
178 static void
179 print_hdr(struct hdr_info *hdr_info)
180 {
181 	boolean_t first = B_TRUE;
182 	size_t i;
183 	for (i = 0; i < NUM_COLS; i++) {
184 		struct col_info *col_info = &hdr_info->cols[i];
185 		const char *name = col_info->col_name;
186 		size_t width = col_info->width;
187 		if (name == NULL)
188 			continue;
189 
190 		if (first) {
191 			(void) printf("%-*s", width, name);
192 			first = B_FALSE;
193 		} else
194 			(void) printf(" %-*s", width, name);
195 	}
196 	(void) putchar('\n');
197 }
198 
199 static void
200 init_hdr_cols(enum be_fmt be_fmt, struct hdr_info *hdr)
201 {
202 	struct col_info *col = hdr->cols;
203 	size_t i;
204 
205 	col[1].col_name = _("Active");
206 	col[2].col_name = _("Mountpoint");
207 	col[3].col_name = _("Space");
208 	col[4].col_name = _("Policy");
209 	col[5].col_name = _("Created");
210 	col[6].col_name = NULL;
211 
212 	switch (be_fmt) {
213 	case BE_FMT_ALL:
214 		col[0].col_name = _("BE/Dataset/Snapshot");
215 		break;
216 	case BE_FMT_DATASET:
217 		col[0].col_name = _("BE/Dataset");
218 		break;
219 	case BE_FMT_SNAPSHOT:
220 		col[0].col_name = _("BE/Snapshot");
221 		col[1].col_name = NULL;
222 		col[2].col_name = NULL;
223 		break;
224 	case BE_FMT_DEFAULT:
225 	default:
226 		col[0].col_name = _("BE");
227 	}
228 
229 	for (i = 0; i < NUM_COLS; i++) {
230 		const char *name = col[i].col_name;
231 		col[i].width = 0;
232 
233 		if (name != NULL) {
234 			wchar_t wname[128];
235 			size_t sz = mbstowcs(wname, name, sizeof (wname) /
236 			    sizeof (wchar_t));
237 			if (sz > 0) {
238 				int wcsw = wcswidth(wname, sz);
239 				if (wcsw > 0)
240 					col[i].width = wcsw;
241 				else
242 					col[i].width = sz;
243 			} else {
244 				col[i].width = strlen(name);
245 			}
246 		}
247 	}
248 }
249 
250 static void
251 nicenum(uint64_t num, char *buf, size_t buflen)
252 {
253 	uint64_t n = num;
254 	int index = 0;
255 	char u;
256 
257 	while (n >= 1024) {
258 		n /= 1024;
259 		index++;
260 	}
261 
262 	u = " KMGTPE"[index];
263 
264 	if (index == 0) {
265 		(void) snprintf(buf, buflen, "%llu", n);
266 	} else {
267 		int i;
268 		for (i = 2; i >= 0; i--) {
269 			if (snprintf(buf, buflen, "%.*f%c", i,
270 			    (double)num / (1ULL << 10 * index), u) <= 5)
271 				break;
272 		}
273 	}
274 }
275 
276 static void
277 count_widths(enum be_fmt be_fmt, struct hdr_info *hdr, be_node_list_t *be_nodes)
278 {
279 	size_t len[NUM_COLS];
280 	char buf[DT_BUF_LEN];
281 	int i;
282 	be_node_list_t *cur_be;
283 
284 	for (i = 0; i < NUM_COLS; i++)
285 		len[i] = hdr->cols[i].width;
286 
287 	for (cur_be = be_nodes; cur_be != NULL; cur_be = cur_be->be_next_node) {
288 		char name[ZFS_MAXNAMELEN+1];
289 		const char *be_name = cur_be->be_node_name;
290 		const char *root_ds = cur_be->be_root_ds;
291 		char *pos;
292 		size_t node_name_len = strlen(cur_be->be_node_name);
293 		size_t root_ds_len = strlen(cur_be->be_root_ds);
294 		size_t mntpt_len = 0;
295 		size_t policy_len = 0;
296 		size_t used_len;
297 		uint64_t used = cur_be->be_space_used;
298 		be_snapshot_list_t *snap = NULL;
299 
300 		if (cur_be->be_mntpt != NULL)
301 			mntpt_len = strlen(cur_be->be_mntpt);
302 		if (cur_be->be_policy_type != NULL)
303 			policy_len = strlen(cur_be->be_policy_type);
304 
305 		(void) strlcpy(name, root_ds, sizeof (name));
306 		pos = strstr(name, be_name);
307 
308 		if (be_fmt == BE_FMT_DEFAULT) {
309 			if (node_name_len > len[0])
310 				len[0] = node_name_len;
311 		} else {
312 			if (root_ds_len + 3 > len[0])
313 				len[0] = root_ds_len + 3;
314 		}
315 
316 		if (mntpt_len > len[2])
317 			len[2] = mntpt_len;
318 		if (policy_len > len[4])
319 			len[4] = policy_len;
320 
321 		for (snap = cur_be->be_node_snapshots; snap != NULL;
322 		    snap = snap->be_next_snapshot) {
323 			uint64_t snap_used = snap->be_snapshot_space_used;
324 			const char *snap_name = snap->be_snapshot_name;
325 			(void) strcpy(pos, snap_name);
326 
327 			if (be_fmt == BE_FMT_DEFAULT)
328 				used += snap_used;
329 			else if (be_fmt & BE_FMT_SNAPSHOT) {
330 				int snap_len = strlen(name) + 3;
331 				if (be_fmt == BE_FMT_SNAPSHOT)
332 					snap_len -= pos - name;
333 				if (snap_len > len[0])
334 					len[0] = snap_len;
335 				nicenum(snap_used, buf, sizeof (buf));
336 				used_len = strlen(buf);
337 				if (used_len > len[3])
338 					len[3] = used_len;
339 			}
340 		}
341 
342 		if (be_fmt == BE_FMT_DEFAULT) {
343 			int used_len;
344 			nicenum(used, buf, sizeof (buf));
345 			used_len = strlen(buf);
346 			if (used_len > len[3])
347 				len[3] = used_len;
348 		}
349 
350 		nicenum(used, buf, sizeof (buf));
351 	}
352 
353 	for (i = 0; i < NUM_COLS; i++)
354 		hdr->cols[i].width = len[i];
355 }
356 
357 static void
358 print_be_nodes(const char *be_name, boolean_t parsable, struct hdr_info *hdr,
359     be_node_list_t *nodes)
360 {
361 	char buf[64];
362 	char datetime[DT_BUF_LEN];
363 	be_node_list_t	*cur_be;
364 
365 	for (cur_be = nodes; cur_be != NULL; cur_be = cur_be->be_next_node) {
366 		char active[3] = "-\0";
367 		int ai = 0;
368 		const char *datetime_fmt = "%F %R";
369 		const char *name = cur_be->be_node_name;
370 		const char *mntpt = cur_be->be_mntpt;
371 		be_snapshot_list_t *snap = NULL;
372 		uint64_t used = cur_be->be_space_used;
373 		time_t creation = cur_be->be_node_creation;
374 		struct tm *tm;
375 
376 		if (be_name != NULL && strcmp(be_name, name) != 0)
377 			continue;
378 
379 		if (parsable)
380 			active[0] = '\0';
381 
382 		tm = localtime(&creation);
383 		(void) strftime(datetime, DT_BUF_LEN, datetime_fmt, tm);
384 
385 		for (snap = cur_be->be_node_snapshots; snap != NULL;
386 		    snap = snap->be_next_snapshot)
387 			used += snap->be_snapshot_space_used;
388 
389 		if (cur_be->be_active)
390 			active[ai++] = 'N';
391 		if (cur_be->be_active_on_boot)
392 			active[ai] = 'R';
393 
394 		nicenum(used, buf, sizeof (buf));
395 		if (parsable)
396 			(void) printf("%s;%s;%s;%s;%llu;%s;%ld\n",
397 			    name,
398 			    cur_be->be_uuid_str,
399 			    active,
400 			    (cur_be->be_mounted ? mntpt: ""),
401 			    used,
402 			    cur_be->be_policy_type,
403 			    creation);
404 		else
405 			(void) printf("%-*s %-*s %-*s %-*s %-*s %-*s\n",
406 			    hdr->cols[0].width, name,
407 			    hdr->cols[1].width, active,
408 			    hdr->cols[2].width, (cur_be->be_mounted ? mntpt:
409 			    "-"),
410 			    hdr->cols[3].width, buf,
411 			    hdr->cols[4].width, cur_be->be_policy_type,
412 			    hdr->cols[5].width, datetime);
413 	}
414 }
415 
416 static void
417 print_be_snapshots(be_node_list_t *be, struct hdr_info *hdr, boolean_t parsable)
418 {
419 	char buf[64];
420 	char datetime[DT_BUF_LEN];
421 	be_snapshot_list_t *snap = NULL;
422 
423 	for (snap = be->be_node_snapshots; snap != NULL;
424 	    snap = snap->be_next_snapshot) {
425 		char name[ZFS_MAXNAMELEN+1];
426 		const char *datetime_fmt = "%F %R";
427 		const char *be_name = be->be_node_name;
428 		const char *root_ds = be->be_root_ds;
429 		const char *snap_name = snap->be_snapshot_name;
430 		char *pos;
431 		uint64_t used = snap->be_snapshot_space_used;
432 		time_t creation = snap->be_snapshot_creation;
433 		struct tm *tm = localtime(&creation);
434 
435 		(void) strncpy(name, root_ds, sizeof (name));
436 		pos = strstr(name, be_name);
437 		(void) strcpy(pos, snap_name);
438 
439 		(void) strftime(datetime, DT_BUF_LEN, datetime_fmt, tm);
440 		nicenum(used, buf, sizeof (buf));
441 
442 		if (parsable)
443 			if (hdr->cols[1].width != 0)
444 				(void) printf("%s;%s;%s;%s;%llu;%s;%ld\n",
445 				    be_name,
446 				    snap_name,
447 				    "",
448 				    "",
449 				    used,
450 				    be->be_policy_type,
451 				    creation);
452 			else
453 				(void) printf("%s;%s;%llu;%s;%ld\n",
454 				    be_name,
455 				    snap_name,
456 				    used,
457 				    be->be_policy_type,
458 				    creation);
459 		else
460 			if (hdr->cols[1].width != 0)
461 				(void) printf("   %-*s %-*s %-*s %-*s %-*s "
462 				    "%-*s\n",
463 				    hdr->cols[0].width-3, name,
464 				    hdr->cols[1].width, "-",
465 				    hdr->cols[2].width, "-",
466 				    hdr->cols[3].width, buf,
467 				    hdr->cols[4].width, be->be_policy_type,
468 				    hdr->cols[5].width, datetime);
469 			else
470 				(void) printf("   %-*s %-*s %-*s %-*s\n",
471 				    hdr->cols[0].width-3, snap_name,
472 				    hdr->cols[3].width, buf,
473 				    hdr->cols[4].width, be->be_policy_type,
474 				    hdr->cols[5].width, datetime);
475 	}
476 }
477 
478 static void
479 print_fmt_nodes(const char *be_name, enum be_fmt be_fmt, boolean_t parsable,
480     struct hdr_info *hdr, be_node_list_t *nodes)
481 {
482 	char buf[64];
483 	char datetime[DT_BUF_LEN];
484 	be_node_list_t	*cur_be;
485 
486 	for (cur_be = nodes; cur_be != NULL; cur_be = cur_be->be_next_node) {
487 		char active[3] = "-\0";
488 		int ai = 0;
489 		const char *datetime_fmt = "%F %R";
490 		const char *name = cur_be->be_node_name;
491 		const char *mntpt = cur_be->be_mntpt;
492 		uint64_t used = cur_be->be_space_used;
493 		time_t creation = cur_be->be_node_creation;
494 		struct tm *tm;
495 
496 		if (be_name != NULL && strcmp(be_name, name) != 0)
497 			continue;
498 
499 		if (!parsable)
500 			(void) printf("%-s\n", name);
501 		else
502 			active[0] = '\0';
503 
504 		tm = localtime(&creation);
505 		(void) strftime(datetime, DT_BUF_LEN, datetime_fmt, tm);
506 
507 		if (cur_be->be_active)
508 			active[ai++] = 'N';
509 		if (cur_be->be_active_on_boot)
510 			active[ai] = 'R';
511 
512 		nicenum(used, buf, sizeof (buf));
513 		if (be_fmt & BE_FMT_DATASET)
514 			if (parsable)
515 				(void) printf("%s;%s;%s;%s;%llu;%s;%ld\n",
516 				    cur_be->be_node_name,
517 				    cur_be->be_root_ds,
518 				    active,
519 				    (cur_be->be_mounted ? mntpt: ""),
520 				    used,
521 				    cur_be->be_policy_type,
522 				    creation);
523 			else
524 				(void) printf("   %-*s %-*s %-*s %-*s %-*s "
525 				    "%-*s\n",
526 				    hdr->cols[0].width-3, cur_be->be_root_ds,
527 				    hdr->cols[1].width, active,
528 				    hdr->cols[2].width, (cur_be->be_mounted ?
529 				    mntpt: "-"),
530 				    hdr->cols[3].width, buf,
531 				    hdr->cols[4].width, cur_be->be_policy_type,
532 				    hdr->cols[5].width, datetime);
533 
534 		if (be_fmt & BE_FMT_SNAPSHOT)
535 			print_be_snapshots(cur_be, hdr, parsable);
536 	}
537 }
538 
539 static void
540 print_nodes(const char *be_name, boolean_t dsets, boolean_t snaps,
541     boolean_t parsable, be_node_list_t *be_nodes)
542 {
543 	struct hdr_info hdr;
544 	enum be_fmt be_fmt  = BE_FMT_DEFAULT;
545 
546 	if (dsets)
547 		be_fmt |= BE_FMT_DATASET;
548 	if (snaps)
549 		be_fmt |= BE_FMT_SNAPSHOT;
550 
551 	if (!parsable) {
552 		init_hdr_cols(be_fmt, &hdr);
553 		count_widths(be_fmt, &hdr, be_nodes);
554 		print_hdr(&hdr);
555 	}
556 
557 	if (be_fmt == BE_FMT_DEFAULT)
558 		print_be_nodes(be_name, parsable, &hdr, be_nodes);
559 	else
560 		print_fmt_nodes(be_name, be_fmt, parsable, &hdr, be_nodes);
561 }
562 
563 static boolean_t
564 confirm_destroy(const char *name)
565 {
566 	boolean_t res = B_FALSE;
567 	const char *yesre = nl_langinfo(YESEXPR);
568 	const char *nore = nl_langinfo(NOEXPR);
569 	regex_t yes_re;
570 	regex_t no_re;
571 	char buf[128];
572 	char *answer;
573 	int cflags = REG_EXTENDED;
574 
575 	if (regcomp(&yes_re, yesre, cflags) != 0) {
576 		/* should not happen */
577 		(void) fprintf(stderr, _("Failed to compile 'yes' regexp\n"));
578 		return (res);
579 	}
580 	if (regcomp(&no_re, nore, cflags) != 0) {
581 		/* should not happen */
582 		(void) fprintf(stderr, _("Failed to compile 'no' regexp\n"));
583 		regfree(&yes_re);
584 		return (res);
585 	}
586 
587 	(void) printf(_("Are you sure you want to destroy %s?\n"
588 	    "This action cannot be undone (y/[n]): "), name);
589 
590 	answer = fgets(buf, sizeof (buf), stdin);
591 	if (answer == NULL || *answer == '\0' || *answer == 10)
592 		goto out;
593 
594 	if (regexec(&yes_re, answer, 0, NULL, 0) == 0) {
595 		res = B_TRUE;
596 	} else if (regexec(&no_re, answer, 0, NULL, 0) != 0) {
597 		(void) fprintf(stderr, _("Invalid response. "
598 		    "Please enter 'y' or 'n'.\n"));
599 	}
600 
601 out:
602 	regfree(&yes_re);
603 	regfree(&no_re);
604 	return (res);
605 }
606 
607 static int
608 be_nvl_alloc(nvlist_t **nvlp)
609 {
610 	assert(nvlp != NULL);
611 
612 	if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0) {
613 		(void) perror(_("nvlist_alloc failed.\n"));
614 		return (1);
615 	}
616 
617 	return (0);
618 }
619 
620 static int
621 be_nvl_add_string(nvlist_t *nvl, const char *name, const char *val)
622 {
623 	assert(nvl != NULL);
624 
625 	if (nvlist_add_string(nvl, name, val) != 0) {
626 		(void) fprintf(stderr, _("nvlist_add_string failed for "
627 		    "%s (%s).\n"), name, val);
628 		return (1);
629 	}
630 
631 	return (0);
632 }
633 
634 static int
635 be_nvl_add_nvlist(nvlist_t *nvl, const char *name, nvlist_t *val)
636 {
637 	assert(nvl != NULL);
638 
639 	if (nvlist_add_nvlist(nvl, name, val) != 0) {
640 		(void) fprintf(stderr, _("nvlist_add_nvlist failed for %s.\n"),
641 		    name);
642 		return (1);
643 	}
644 
645 	return (0);
646 }
647 
648 static int
649 be_nvl_add_uint16(nvlist_t *nvl, const char *name, uint16_t val)
650 {
651 	assert(nvl != NULL);
652 
653 	if (nvlist_add_uint16(nvl, name, val) != 0) {
654 		(void) fprintf(stderr, _("nvlist_add_uint16 failed for "
655 		    "%s (%hu).\n"), name, val);
656 		return (1);
657 	}
658 
659 	return (0);
660 }
661 
662 static int
663 be_do_activate(int argc, char **argv)
664 {
665 	nvlist_t	*be_attrs;
666 	int		err = 1;
667 	int		c;
668 	char		*obe_name;
669 
670 	while ((c = getopt(argc, argv, "v")) != -1) {
671 		switch (c) {
672 		case 'v':
673 			libbe_print_errors(B_TRUE);
674 			break;
675 		default:
676 			usage();
677 			return (1);
678 		}
679 	}
680 
681 	argc -= optind;
682 	argv += optind;
683 
684 	if (argc != 1) {
685 		usage();
686 		return (1);
687 	}
688 
689 	obe_name = argv[0];
690 
691 	if (be_nvl_alloc(&be_attrs) != 0)
692 		return (1);
693 
694 	if (be_nvl_add_string(be_attrs, BE_ATTR_ORIG_BE_NAME, obe_name) != 0)
695 		goto out;
696 
697 	err = be_activate(be_attrs);
698 
699 	switch (err) {
700 	case BE_SUCCESS:
701 		(void) printf(_("Activated successfully\n"));
702 		break;
703 	case BE_ERR_BE_NOENT:
704 		(void) fprintf(stderr, _("%s does not exist or appear "
705 		    "to be a valid BE.\nPlease check that the name of "
706 		    "the BE provided is correct.\n"), obe_name);
707 		break;
708 	case BE_ERR_PERM:
709 	case BE_ERR_ACCESS:
710 		(void) fprintf(stderr, _("Unable to activate %s.\n"), obe_name);
711 		(void) fprintf(stderr, _("You have insufficient privileges to "
712 		    "execute this command.\n"));
713 		break;
714 	case BE_ERR_ACTIVATE_CURR:
715 	default:
716 		(void) fprintf(stderr, _("Unable to activate %s.\n"), obe_name);
717 		(void) fprintf(stderr, "%s\n", be_err_to_str(err));
718 	}
719 
720 out:
721 	nvlist_free(be_attrs);
722 	return (err);
723 }
724 
725 static int
726 be_do_create(int argc, char **argv)
727 {
728 	nvlist_t	*be_attrs;
729 	nvlist_t	*zfs_props = NULL;
730 	boolean_t	activate = B_FALSE;
731 	boolean_t	is_snap = B_FALSE;
732 	int		c;
733 	int		err = 1;
734 	char		*obe_name = NULL;
735 	char		*snap_name = NULL;
736 	char		*nbe_zpool = NULL;
737 	char		*nbe_name = NULL;
738 	char		*nbe_desc = NULL;
739 	char		*propname = NULL;
740 	char		*propval = NULL;
741 	char		*strval = NULL;
742 
743 	while ((c = getopt(argc, argv, "ad:e:io:p:v")) != -1) {
744 		switch (c) {
745 		case 'a':
746 			activate = B_TRUE;
747 			break;
748 		case 'd':
749 			nbe_desc = optarg;
750 			break;
751 		case 'e':
752 			obe_name = optarg;
753 			break;
754 		case 'o':
755 			if (zfs_props == NULL && be_nvl_alloc(&zfs_props) != 0)
756 				return (1);
757 
758 			propname = optarg;
759 			if ((propval = strchr(propname, '=')) == NULL) {
760 				(void) fprintf(stderr, _("missing "
761 				    "'=' for -o option\n"));
762 				goto out2;
763 			}
764 			*propval = '\0';
765 			propval++;
766 			if (nvlist_lookup_string(zfs_props, propname,
767 			    &strval) == 0) {
768 				(void) fprintf(stderr, _("property '%s' "
769 				    "specified multiple times\n"), propname);
770 				goto out2;
771 
772 			}
773 			if (be_nvl_add_string(zfs_props, propname, propval)
774 			    != 0)
775 				goto out2;
776 
777 			break;
778 		case 'p':
779 			nbe_zpool = optarg;
780 			break;
781 		case 'v':
782 			libbe_print_errors(B_TRUE);
783 			break;
784 		default:
785 			usage();
786 			goto out2;
787 		}
788 	}
789 
790 	argc -= optind;
791 	argv += optind;
792 
793 	if (argc != 1) {
794 		usage();
795 		goto out2;
796 	}
797 
798 	nbe_name = argv[0];
799 
800 	if ((snap_name = strrchr(nbe_name, '@')) != NULL) {
801 		if (snap_name[1] == '\0') {
802 			usage();
803 			goto out2;
804 		}
805 
806 		snap_name[0] = '\0';
807 		snap_name++;
808 		is_snap = B_TRUE;
809 	}
810 
811 	if (obe_name) {
812 		if (is_snap) {
813 			usage();
814 			goto out2;
815 		}
816 
817 		/*
818 		 * Check if obe_name is really a snapshot name.
819 		 * If so, split it out.
820 		 */
821 		if ((snap_name = strrchr(obe_name, '@')) != NULL) {
822 			if (snap_name[1] == '\0') {
823 				usage();
824 				goto out2;
825 			}
826 
827 			snap_name[0] = '\0';
828 			snap_name++;
829 		}
830 	} else if (is_snap) {
831 		obe_name = nbe_name;
832 		nbe_name = NULL;
833 	}
834 
835 	if (be_nvl_alloc(&be_attrs) != 0)
836 		goto out2;
837 
838 
839 	if (zfs_props != NULL && be_nvl_add_nvlist(be_attrs,
840 	    BE_ATTR_ORIG_BE_NAME, zfs_props) != 0)
841 		goto out;
842 
843 	if (obe_name != NULL && be_nvl_add_string(be_attrs,
844 	    BE_ATTR_ORIG_BE_NAME, obe_name) != 0)
845 		goto out;
846 
847 	if (snap_name != NULL && be_nvl_add_string(be_attrs,
848 	    BE_ATTR_SNAP_NAME, snap_name) != 0)
849 		goto out;
850 
851 	if (nbe_zpool != NULL && be_nvl_add_string(be_attrs,
852 	    BE_ATTR_NEW_BE_POOL, nbe_zpool) != 0)
853 		goto out;
854 
855 	if (nbe_name != NULL && be_nvl_add_string(be_attrs,
856 	    BE_ATTR_NEW_BE_NAME, nbe_name) != 0)
857 		goto out;
858 
859 	if (nbe_desc != NULL && be_nvl_add_string(be_attrs,
860 	    BE_ATTR_NEW_BE_DESC, nbe_desc) != 0)
861 		goto out;
862 
863 	if (is_snap)
864 		err = be_create_snapshot(be_attrs);
865 	else
866 		err = be_copy(be_attrs);
867 
868 	switch (err) {
869 	case BE_SUCCESS:
870 		if (!is_snap && !nbe_name) {
871 			/*
872 			 * We requested an auto named BE; find out the
873 			 * name of the BE that was created for us and
874 			 * the auto snapshot created from the original BE.
875 			 */
876 			if (nvlist_lookup_string(be_attrs, BE_ATTR_NEW_BE_NAME,
877 			    &nbe_name) != 0) {
878 				(void) fprintf(stderr, _("failed to get %s "
879 				    "attribute\n"), BE_ATTR_NEW_BE_NAME);
880 				break;
881 			} else
882 				(void) printf(_("Auto named BE: %s\n"),
883 				    nbe_name);
884 
885 			if (nvlist_lookup_string(be_attrs, BE_ATTR_SNAP_NAME,
886 			    &snap_name) != 0) {
887 				(void) fprintf(stderr, _("failed to get %s "
888 				    "attribute\n"), BE_ATTR_SNAP_NAME);
889 				break;
890 			} else
891 				(void) printf(_("Auto named snapshot: %s\n"),
892 				    snap_name);
893 		}
894 
895 		if (!is_snap && activate) {
896 			char *args[] = { "activate", "", NULL };
897 			args[1] = nbe_name;
898 			optind = 1;
899 
900 			err = be_do_activate(2, args);
901 			goto out;
902 		}
903 
904 		(void) printf(_("Created successfully\n"));
905 		break;
906 	case BE_ERR_BE_EXISTS:
907 		(void) fprintf(stderr, _("BE %s already exists\n."
908 		    "Please choose a different BE name.\n"), nbe_name);
909 		break;
910 	case BE_ERR_SS_EXISTS:
911 		(void) fprintf(stderr, _("BE %s snapshot %s already exists.\n"
912 		    "Please choose a different snapshot name.\n"), obe_name,
913 		    snap_name);
914 		break;
915 	case BE_ERR_PERM:
916 	case BE_ERR_ACCESS:
917 		if (is_snap)
918 			(void) fprintf(stderr, _("Unable to create snapshot "
919 			    "%s.\n"), snap_name);
920 		else
921 			(void) fprintf(stderr, _("Unable to create %s.\n"),
922 			    nbe_name);
923 		(void) fprintf(stderr, _("You have insufficient privileges to "
924 		    "execute this command.\n"));
925 		break;
926 	default:
927 		if (is_snap)
928 			(void) fprintf(stderr, _("Unable to create snapshot "
929 			    "%s.\n"), snap_name);
930 		else
931 			(void) fprintf(stderr, _("Unable to create %s.\n"),
932 			    nbe_name);
933 		(void) fprintf(stderr, "%s\n", be_err_to_str(err));
934 	}
935 
936 out:
937 	nvlist_free(be_attrs);
938 out2:
939 	if (zfs_props != NULL)
940 		nvlist_free(zfs_props);
941 
942 	return (err);
943 }
944 
945 static int
946 be_do_destroy(int argc, char **argv)
947 {
948 	nvlist_t	*be_attrs;
949 	boolean_t	is_snap = B_FALSE;
950 	boolean_t	suppress_prompt = B_FALSE;
951 	int		err = 1;
952 	int		c;
953 	int		destroy_flags = 0;
954 	char		*snap_name;
955 	char		*be_name;
956 
957 	while ((c = getopt(argc, argv, "fFsv")) != -1) {
958 		switch (c) {
959 		case 'f':
960 			destroy_flags |= BE_DESTROY_FLAG_FORCE_UNMOUNT;
961 			break;
962 		case 's':
963 			destroy_flags |= BE_DESTROY_FLAG_SNAPSHOTS;
964 			break;
965 		case 'v':
966 			libbe_print_errors(B_TRUE);
967 			break;
968 		case 'F':
969 			suppress_prompt = B_TRUE;
970 			break;
971 		default:
972 			usage();
973 			return (1);
974 		}
975 	}
976 
977 	argc -= optind;
978 	argv += optind;
979 
980 	if (argc != 1) {
981 		usage();
982 		return (1);
983 	}
984 
985 	be_name = argv[0];
986 	if (!suppress_prompt && !confirm_destroy(be_name)) {
987 		(void) printf(_("%s has not been destroyed.\n"), be_name);
988 		return (0);
989 	}
990 
991 	if ((snap_name = strrchr(be_name, '@')) != NULL) {
992 		if (snap_name[1] == '\0') {
993 			usage();
994 			return (1);
995 		}
996 
997 		is_snap = B_TRUE;
998 		*snap_name = '\0';
999 		snap_name++;
1000 	}
1001 
1002 	if (be_nvl_alloc(&be_attrs) != 0)
1003 		return (1);
1004 
1005 
1006 	if (be_nvl_add_string(be_attrs, BE_ATTR_ORIG_BE_NAME, be_name) != 0)
1007 		goto out;
1008 
1009 	if (is_snap) {
1010 		if (be_nvl_add_string(be_attrs, BE_ATTR_SNAP_NAME,
1011 		    snap_name) != 0)
1012 			goto out;
1013 
1014 		err = be_destroy_snapshot(be_attrs);
1015 	} else {
1016 		if (be_nvl_add_uint16(be_attrs, BE_ATTR_DESTROY_FLAGS,
1017 		    destroy_flags) != 0)
1018 			goto out;
1019 
1020 		err = be_destroy(be_attrs);
1021 	}
1022 
1023 	switch (err) {
1024 	case BE_SUCCESS:
1025 		(void) printf(_("Destroyed successfully\n"));
1026 		break;
1027 	case BE_ERR_MOUNTED:
1028 		(void) fprintf(stderr, _("Unable to destroy %s.\n"), be_name);
1029 		(void) fprintf(stderr, _("It is currently mounted and must be "
1030 		    "unmounted before it can be destroyed.\n" "Use 'beadm "
1031 		    "unmount %s' to unmount the BE before destroying\nit or "
1032 		    "'beadm destroy -f %s'.\n"), be_name, be_name);
1033 		break;
1034 	case BE_ERR_DESTROY_CURR_BE:
1035 		(void) fprintf(stderr, _("%s is the currently active BE and "
1036 		    "cannot be destroyed.\nYou must boot from another BE in "
1037 		    "order to destroy %s.\n"), be_name, be_name);
1038 		break;
1039 	case BE_ERR_ZONES_UNMOUNT:
1040 		(void) fprintf(stderr, _("Unable to destroy one of " "%s's "
1041 		    "zone BE's.\nUse 'beadm destroy -f %s' or "
1042 		    "'zfs -f destroy <dataset>'.\n"), be_name, be_name);
1043 		break;
1044 	case BE_ERR_SS_NOENT:
1045 		(void) fprintf(stderr, _("%s does not exist or appear "
1046 		    "to be a valid snapshot.\nPlease check that the name of "
1047 		    "the snapshot provided is correct.\n"), snap_name);
1048 		break;
1049 	case BE_ERR_PERM:
1050 	case BE_ERR_ACCESS:
1051 		(void) fprintf(stderr, _("Unable to destroy %s.\n"), be_name);
1052 		(void) fprintf(stderr, _("You have insufficient privileges to "
1053 		    "execute this command.\n"));
1054 		break;
1055 	case BE_ERR_SS_EXISTS:
1056 		(void) fprintf(stderr, _("Unable to destroy %s: "
1057 		    "BE has snapshots.\nUse 'beadm destroy -s %s' or "
1058 		    "'zfs -r destroy <dataset>'.\n"), be_name, be_name);
1059 		break;
1060 	default:
1061 		(void) fprintf(stderr, _("Unable to destroy %s.\n"), be_name);
1062 		(void) fprintf(stderr, "%s\n", be_err_to_str(err));
1063 	}
1064 
1065 out:
1066 	nvlist_free(be_attrs);
1067 	return (err);
1068 }
1069 
1070 static int
1071 be_do_list(int argc, char **argv)
1072 {
1073 	be_node_list_t	*be_nodes = NULL;
1074 	boolean_t	all = B_FALSE;
1075 	boolean_t	dsets = B_FALSE;
1076 	boolean_t	snaps = B_FALSE;
1077 	boolean_t	parsable = B_FALSE;
1078 	int		err = 1;
1079 	int		c = 0;
1080 	char		*be_name = NULL;
1081 
1082 	while ((c = getopt(argc, argv, "adsvH")) != -1) {
1083 		switch (c) {
1084 		case 'a':
1085 			all = B_TRUE;
1086 			break;
1087 		case 'd':
1088 			dsets = B_TRUE;
1089 			break;
1090 		case 's':
1091 			snaps = B_TRUE;
1092 			break;
1093 		case 'v':
1094 			libbe_print_errors(B_TRUE);
1095 			break;
1096 		case 'H':
1097 			parsable = B_TRUE;
1098 			break;
1099 		default:
1100 			usage();
1101 			return (1);
1102 		}
1103 	}
1104 
1105 	if (all) {
1106 		if (dsets) {
1107 			(void) fprintf(stderr, _("Invalid options: -a and %s "
1108 			    "are mutually exclusive.\n"), "-d");
1109 			usage();
1110 			return (1);
1111 		}
1112 		if (snaps) {
1113 			(void) fprintf(stderr, _("Invalid options: -a and %s "
1114 			    "are mutually exclusive.\n"), "-s");
1115 			usage();
1116 			return (1);
1117 		}
1118 
1119 		dsets = B_TRUE;
1120 		snaps = B_TRUE;
1121 	}
1122 
1123 	argc -= optind;
1124 	argv += optind;
1125 
1126 
1127 	if (argc == 1)
1128 		be_name = argv[0];
1129 
1130 	err = be_list(be_name, &be_nodes);
1131 
1132 	switch (err) {
1133 	case BE_SUCCESS:
1134 		print_nodes(be_name, dsets, snaps, parsable, be_nodes);
1135 		break;
1136 	case BE_ERR_BE_NOENT:
1137 		if (be_name == NULL)
1138 			(void) fprintf(stderr, _("No boot environments found "
1139 			    "on this system.\n"));
1140 		else {
1141 			(void) fprintf(stderr, _("%s does not exist or appear "
1142 			    "to be a valid BE.\nPlease check that the name of "
1143 			    "the BE provided is correct.\n"), be_name);
1144 		}
1145 		break;
1146 	default:
1147 		(void) fprintf(stderr, _("Unable to display Boot "
1148 		    "Environment\n"));
1149 		(void) fprintf(stderr, "%s\n", be_err_to_str(err));
1150 	}
1151 
1152 	if (be_nodes != NULL)
1153 		be_free_list(be_nodes);
1154 	return (err);
1155 }
1156 
1157 static int
1158 be_do_mount(int argc, char **argv)
1159 {
1160 	nvlist_t	*be_attrs;
1161 	boolean_t	shared_fs = B_FALSE;
1162 	int		err = 1;
1163 	int		c;
1164 	int		mount_flags = 0;
1165 	char		*obe_name;
1166 	char		*mountpoint;
1167 	char		*tmp_mp = NULL;
1168 
1169 	while ((c = getopt(argc, argv, "s:v")) != -1) {
1170 		switch (c) {
1171 		case 's':
1172 			shared_fs = B_TRUE;
1173 
1174 			mount_flags |= BE_MOUNT_FLAG_SHARED_FS;
1175 
1176 			if (strcmp(optarg, "rw") == 0) {
1177 				mount_flags |= BE_MOUNT_FLAG_SHARED_RW;
1178 			} else if (strcmp(optarg, "ro") != 0) {
1179 				(void) fprintf(stderr, _("The -s flag "
1180 				    "requires an argument [ rw | ro ]\n"));
1181 				usage();
1182 				return (1);
1183 			}
1184 
1185 			break;
1186 		case 'v':
1187 			libbe_print_errors(B_TRUE);
1188 			break;
1189 		default:
1190 			usage();
1191 			return (1);
1192 		}
1193 	}
1194 
1195 	argc -= optind;
1196 	argv += optind;
1197 
1198 	if (argc < 1 || argc > 2) {
1199 		usage();
1200 		return (1);
1201 	}
1202 
1203 	obe_name = argv[0];
1204 
1205 	if (argc == 2) {
1206 		mountpoint = argv[1];
1207 		if (mountpoint[0] != '/') {
1208 			(void) fprintf(stderr, _("Invalid mount point %s. "
1209 			    "Mount point must start with a /.\n"), mountpoint);
1210 			return (1);
1211 		}
1212 	} else {
1213 		const char *tmpdir = getenv("TMPDIR");
1214 		const char *tmpname = "tmp.XXXXXX";
1215 		int sz;
1216 
1217 		if (tmpdir == NULL)
1218 			tmpdir = "/tmp";
1219 
1220 		sz = asprintf(&tmp_mp, "%s/%s", tmpdir, tmpname);
1221 		if (sz < 0) {
1222 			(void) fprintf(stderr, _("internal error: "
1223 			    "out of memory\n"));
1224 			return (1);
1225 		}
1226 
1227 		mountpoint = mkdtemp(tmp_mp);
1228 	}
1229 
1230 	if (be_nvl_alloc(&be_attrs) != 0)
1231 		return (1);
1232 
1233 	if (be_nvl_add_string(be_attrs, BE_ATTR_ORIG_BE_NAME, obe_name) != 0)
1234 		goto out;
1235 
1236 	if (be_nvl_add_string(be_attrs, BE_ATTR_MOUNTPOINT, mountpoint) != 0)
1237 		goto out;
1238 
1239 	if (shared_fs && be_nvl_add_uint16(be_attrs, BE_ATTR_MOUNT_FLAGS,
1240 	    mount_flags) != 0)
1241 		goto out;
1242 
1243 	err = be_mount(be_attrs);
1244 
1245 	switch (err) {
1246 	case BE_SUCCESS:
1247 		(void) printf(_("Mounted successfully on: '%s'\n"), mountpoint);
1248 		break;
1249 	case BE_ERR_BE_NOENT:
1250 		(void) fprintf(stderr, _("%s does not exist or appear "
1251 		    "to be a valid BE.\nPlease check that the name of "
1252 		    "the BE provided is correct.\n"), obe_name);
1253 		break;
1254 	case BE_ERR_MOUNTED:
1255 		(void) fprintf(stderr, _("%s is already mounted.\n"
1256 		    "Please unmount the BE before mounting it again.\n"),
1257 		    obe_name);
1258 		break;
1259 	case BE_ERR_PERM:
1260 	case BE_ERR_ACCESS:
1261 		(void) fprintf(stderr, _("Unable to mount %s.\n"), obe_name);
1262 		(void) fprintf(stderr, _("You have insufficient privileges to "
1263 		    "execute this command.\n"));
1264 		break;
1265 	default:
1266 		(void) fprintf(stderr, _("Unable to mount %s.\n"), obe_name);
1267 		(void) fprintf(stderr, "%s\n", be_err_to_str(err));
1268 	}
1269 
1270 out:
1271 	if (tmp_mp != NULL)
1272 		free(tmp_mp);
1273 	nvlist_free(be_attrs);
1274 	return (err);
1275 }
1276 
1277 static int
1278 be_do_unmount(int argc, char **argv)
1279 {
1280 	nvlist_t	*be_attrs;
1281 	char		*obe_name;
1282 	int		err = 1;
1283 	int		c;
1284 	int		unmount_flags = 0;
1285 
1286 	while ((c = getopt(argc, argv, "fv")) != -1) {
1287 		switch (c) {
1288 		case 'f':
1289 			unmount_flags |= BE_UNMOUNT_FLAG_FORCE;
1290 			break;
1291 		case 'v':
1292 			libbe_print_errors(B_TRUE);
1293 			break;
1294 		default:
1295 			usage();
1296 			return (1);
1297 		}
1298 	}
1299 
1300 	argc -= optind;
1301 	argv += optind;
1302 
1303 	if (argc != 1) {
1304 		usage();
1305 		return (1);
1306 	}
1307 
1308 	obe_name = argv[0];
1309 
1310 	if (be_nvl_alloc(&be_attrs) != 0)
1311 		return (1);
1312 
1313 
1314 	if (be_nvl_add_string(be_attrs, BE_ATTR_ORIG_BE_NAME, obe_name) != 0)
1315 		goto out;
1316 
1317 	if (be_nvl_add_uint16(be_attrs, BE_ATTR_UNMOUNT_FLAGS,
1318 	    unmount_flags) != 0)
1319 		goto out;
1320 
1321 	err = be_unmount(be_attrs);
1322 
1323 	switch (err) {
1324 	case BE_SUCCESS:
1325 		(void) printf(_("Unmounted successfully\n"));
1326 		break;
1327 	case BE_ERR_BE_NOENT:
1328 		(void) fprintf(stderr, _("%s does not exist or appear "
1329 		    "to be a valid BE.\nPlease check that the name of "
1330 		    "the BE provided is correct.\n"), obe_name);
1331 		break;
1332 	case BE_ERR_UMOUNT_CURR_BE:
1333 		(void) fprintf(stderr, _("%s is the currently active BE.\n"
1334 		    "It cannot be unmounted unless another BE is the "
1335 		    "currently active BE.\n"), obe_name);
1336 		break;
1337 	case BE_ERR_UMOUNT_SHARED:
1338 		(void) fprintf(stderr, _("%s is a shared file system and it "
1339 		    "cannot be unmounted.\n"), obe_name);
1340 		break;
1341 	case BE_ERR_PERM:
1342 	case BE_ERR_ACCESS:
1343 		(void) fprintf(stderr, _("Unable to unmount %s.\n"), obe_name);
1344 		(void) fprintf(stderr, _("You have insufficient privileges to "
1345 		    "execute this command.\n"));
1346 		break;
1347 	default:
1348 		(void) fprintf(stderr, _("Unable to unmount %s.\n"), obe_name);
1349 		(void) fprintf(stderr, "%s\n", be_err_to_str(err));
1350 	}
1351 
1352 out:
1353 	nvlist_free(be_attrs);
1354 	return (err);
1355 }
1356 
1357 static int
1358 be_do_rename(int argc, char **argv)
1359 {
1360 	nvlist_t	*be_attrs;
1361 	char		*obe_name;
1362 	char		*nbe_name;
1363 	int err = 1;
1364 	int c;
1365 
1366 	while ((c = getopt(argc, argv, "v")) != -1) {
1367 		switch (c) {
1368 		case 'v':
1369 			libbe_print_errors(B_TRUE);
1370 			break;
1371 		default:
1372 			usage();
1373 			return (1);
1374 		}
1375 	}
1376 
1377 	argc -= optind;
1378 	argv += optind;
1379 
1380 	if (argc != 2) {
1381 		usage();
1382 		return (1);
1383 	}
1384 
1385 	obe_name = argv[0];
1386 	nbe_name = argv[1];
1387 
1388 	if (be_nvl_alloc(&be_attrs) != 0)
1389 		return (1);
1390 
1391 	if (be_nvl_add_string(be_attrs, BE_ATTR_ORIG_BE_NAME, obe_name) != 0)
1392 		goto out;
1393 
1394 	if (be_nvl_add_string(be_attrs, BE_ATTR_NEW_BE_NAME, nbe_name) != 0)
1395 		goto out;
1396 
1397 	err = be_rename(be_attrs);
1398 
1399 	switch (err) {
1400 	case BE_SUCCESS:
1401 		(void) printf(_("Renamed successfully\n"));
1402 		break;
1403 	case BE_ERR_BE_NOENT:
1404 		(void) fprintf(stderr, _("%s does not exist or appear "
1405 		    "to be a valid BE.\nPlease check that the name of "
1406 		    "the BE provided is correct.\n"), obe_name);
1407 		break;
1408 	case BE_ERR_PERM:
1409 	case BE_ERR_ACCESS:
1410 		(void) fprintf(stderr, _("Rename of BE %s failed.\n"),
1411 		    obe_name);
1412 		(void) fprintf(stderr, _("You have insufficient privileges to "
1413 		    "execute this command.\n"));
1414 		break;
1415 	default:
1416 		(void) fprintf(stderr, _("Rename of BE %s failed.\n"),
1417 		    obe_name);
1418 		(void) fprintf(stderr, "%s\n", be_err_to_str(err));
1419 	}
1420 
1421 out:
1422 	nvlist_free(be_attrs);
1423 	return (err);
1424 }
1425 
1426 static int
1427 be_do_rollback(int argc, char **argv)
1428 {
1429 	nvlist_t	*be_attrs;
1430 	char		*obe_name;
1431 	char		*snap_name;
1432 	int		err = 1;
1433 	int		c;
1434 
1435 	while ((c = getopt(argc, argv, "v")) != -1) {
1436 		switch (c) {
1437 		case 'v':
1438 			libbe_print_errors(B_TRUE);
1439 			break;
1440 		default:
1441 			usage();
1442 			return (1);
1443 		}
1444 	}
1445 
1446 	argc -= optind;
1447 	argv += optind;
1448 
1449 	if (argc < 1 || argc > 2) {
1450 		usage();
1451 		return (1);
1452 	}
1453 
1454 	obe_name = argv[0];
1455 	if (argc == 2)
1456 		snap_name = argv[1];
1457 	else { /* argc == 1 */
1458 		if ((snap_name = strrchr(obe_name, '@')) != NULL) {
1459 			if (snap_name[1] == '\0') {
1460 				usage();
1461 				return (1);
1462 			}
1463 
1464 			snap_name[0] = '\0';
1465 			snap_name++;
1466 		} else {
1467 			usage();
1468 			return (1);
1469 		}
1470 	}
1471 
1472 	if (be_nvl_alloc(&be_attrs) != 0)
1473 		return (1);
1474 
1475 	if (be_nvl_add_string(be_attrs, BE_ATTR_ORIG_BE_NAME, obe_name) != 0)
1476 		goto out;
1477 
1478 	if (be_nvl_add_string(be_attrs, BE_ATTR_SNAP_NAME, snap_name) != 0)
1479 		goto out;
1480 
1481 	err = be_rollback(be_attrs);
1482 
1483 	switch (err) {
1484 	case BE_SUCCESS:
1485 		(void) printf(_("Rolled back successfully\n"));
1486 		break;
1487 	case BE_ERR_BE_NOENT:
1488 		(void) fprintf(stderr, _("%s does not exist or appear "
1489 		    "to be a valid BE.\nPlease check that the name of "
1490 		    "the BE provided is correct.\n"), obe_name);
1491 		break;
1492 	case BE_ERR_SS_NOENT:
1493 		(void) fprintf(stderr, _("%s does not exist or appear "
1494 		    "to be a valid snapshot.\nPlease check that the name of "
1495 		    "the snapshot provided is correct.\n"), snap_name);
1496 		break;
1497 	case BE_ERR_PERM:
1498 	case BE_ERR_ACCESS:
1499 		(void) fprintf(stderr, _("Rollback of BE %s snapshot %s "
1500 		    "failed.\n"), obe_name, snap_name);
1501 		(void) fprintf(stderr, _("You have insufficient privileges to "
1502 		    "execute this command.\n"));
1503 		break;
1504 	default:
1505 		(void) fprintf(stderr, _("Rollback of BE %s snapshot %s "
1506 		    "failed.\n"), obe_name, snap_name);
1507 		(void) fprintf(stderr, "%s\n", be_err_to_str(err));
1508 	}
1509 
1510 out:
1511 	nvlist_free(be_attrs);
1512 	return (err);
1513 }
1514