1/*-
2 * Copyright (c) 2012 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by Semihalf under sponsorship
6 * from the FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD$");
33#include <sys/types.h>
34
35#include <stdio.h>
36#include <stdlib.h>
37#include <sysexits.h>
38#include <time.h>
39
40#include <fs/nandfs/nandfs_fs.h>
41#include <libnandfs.h>
42
43#include "nandfs.h"
44
45#define NCPINFO	512
46
47static void
48lssnap_usage(void)
49{
50
51	fprintf(stderr, "usage:\n");
52	fprintf(stderr, "\tlssnap node\n");
53}
54
55static void
56print_cpinfo(struct nandfs_cpinfo *cpinfo)
57{
58	struct tm tm;
59	time_t t;
60	char timebuf[128];
61
62	t = (time_t)cpinfo->nci_create;
63	localtime_r(&t, &tm);
64	strftime(timebuf, sizeof(timebuf), "%F %T", &tm);
65
66	printf("%20llu  %s\n", (unsigned long long)cpinfo->nci_cno, timebuf);
67}
68
69int
70nandfs_lssnap(int argc, char **argv)
71{
72	struct nandfs_cpinfo *cpinfos;
73	struct nandfs fs;
74	uint64_t next;
75	int error, nsnap, i;
76
77	if (argc != 1) {
78		lssnap_usage();
79		return (EX_USAGE);
80	}
81
82	cpinfos = malloc(sizeof(*cpinfos) * NCPINFO);
83	if (cpinfos == NULL) {
84		fprintf(stderr, "cannot allocate memory\n");
85		return (-1);
86	}
87
88	nandfs_init(&fs, argv[0]);
89	error = nandfs_open(&fs);
90	if (error == -1) {
91		fprintf(stderr, "nandfs_open: %s\n", nandfs_errmsg(&fs));
92		goto out;
93	}
94
95	for (next = 1; next != 0; next = cpinfos[nsnap - 1].nci_next) {
96		nsnap = nandfs_get_snap(&fs, next, cpinfos, NCPINFO);
97		if (nsnap < 1)
98			break;
99
100		for (i = 0; i < nsnap; i++)
101			print_cpinfo(&cpinfos[i]);
102	}
103
104	if (nsnap == -1)
105		fprintf(stderr, "nandfs_get_snap: %s\n", nandfs_errmsg(&fs));
106
107out:
108	nandfs_close(&fs);
109	nandfs_destroy(&fs);
110	free(cpinfos);
111	return (error);
112}
113