1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2012 The FreeBSD Foundation
5 * All rights reserved.
6 *
7 * This software was developed by Semihalf under sponsorship
8 * from the FreeBSD Foundation.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 *
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: stable/11/sbin/nandfs/lssnap.c 330449 2018-03-05 07:26:05Z eadler $");
35#include <sys/types.h>
36
37#include <stdio.h>
38#include <stdlib.h>
39#include <sysexits.h>
40#include <time.h>
41
42#include <fs/nandfs/nandfs_fs.h>
43#include <libnandfs.h>
44
45#include "nandfs.h"
46
47#define NCPINFO	512
48
49static void
50lssnap_usage(void)
51{
52
53	fprintf(stderr, "usage:\n");
54	fprintf(stderr, "\tlssnap node\n");
55}
56
57static void
58print_cpinfo(struct nandfs_cpinfo *cpinfo)
59{
60	struct tm tm;
61	time_t t;
62	char timebuf[128];
63
64	t = (time_t)cpinfo->nci_create;
65	localtime_r(&t, &tm);
66	strftime(timebuf, sizeof(timebuf), "%F %T", &tm);
67
68	printf("%20llu  %s\n", (unsigned long long)cpinfo->nci_cno, timebuf);
69}
70
71int
72nandfs_lssnap(int argc, char **argv)
73{
74	struct nandfs_cpinfo *cpinfos;
75	struct nandfs fs;
76	uint64_t next;
77	int error, nsnap, i;
78
79	if (argc != 1) {
80		lssnap_usage();
81		return (EX_USAGE);
82	}
83
84	cpinfos = malloc(sizeof(*cpinfos) * NCPINFO);
85	if (cpinfos == NULL) {
86		fprintf(stderr, "cannot allocate memory\n");
87		return (-1);
88	}
89
90	nandfs_init(&fs, argv[0]);
91	error = nandfs_open(&fs);
92	if (error == -1) {
93		fprintf(stderr, "nandfs_open: %s\n", nandfs_errmsg(&fs));
94		goto out;
95	}
96
97	for (next = 1; next != 0; next = cpinfos[nsnap - 1].nci_next) {
98		nsnap = nandfs_get_snap(&fs, next, cpinfos, NCPINFO);
99		if (nsnap < 1)
100			break;
101
102		for (i = 0; i < nsnap; i++)
103			print_cpinfo(&cpinfos[i]);
104	}
105
106	if (nsnap == -1)
107		fprintf(stderr, "nandfs_get_snap: %s\n", nandfs_errmsg(&fs));
108
109out:
110	nandfs_close(&fs);
111	nandfs_destroy(&fs);
112	free(cpinfos);
113	return (error);
114}
115