format.c revision 329059 
1/*-
2 * Copyright (c) 2014 Juniper Networks, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: stable/11/usr.bin/mkimg/format.c 329059 2018-02-09 09:15:43Z manu $");
29
30#include <sys/stat.h>
31#include <err.h>
32#include <errno.h>
33#include <stdint.h>
34#include <stdlib.h>
35#include <string.h>
36#include <unistd.h>
37
38#include "image.h"
39#include "format.h"
40#include "mkimg.h"
41
42static struct mkimg_format *first;
43static struct mkimg_format *format;
44
45struct mkimg_format *
46format_iterate(struct mkimg_format *f)
47{
48
49	return ((f == NULL) ? first : f->next);
50}
51
52void
53format_register(struct mkimg_format *f)
54{
55
56	f->next = first;
57	first = f;
58}
59
60int
61format_resize(lba_t end)
62{
63
64	if (format == NULL)
65		return (ENOSYS);
66	return (format->resize(end));
67}
68
69int
70format_select(const char *spec)
71{
72	struct mkimg_format *f;
73
74	f = NULL;
75	while ((f = format_iterate(f)) != NULL) {
76		if (strcasecmp(spec, f->name) == 0) {
77			format = f;
78			return (0);
79		}
80	}
81	return (EINVAL);
82}
83
84struct mkimg_format *
85format_selected(void)
86{
87
88	return (format);
89}
90
91int
92format_write(int fd)
93{
94	int error;
95
96	if (format == NULL)
97		return (ENOSYS);
98	error = format->write(fd);
99	return (error);
100}
101