xref: /freebsd/usr.bin/mkimg/format.c (revision ee7b0571c2c18bdec848ed2044223cc88db29bd8)
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("$FreeBSD$");
29 
30 #include <sys/types.h>
31 #include <sys/linker_set.h>
32 #include <sys/queue.h>
33 #include <sys/stat.h>
34 #include <err.h>
35 #include <errno.h>
36 #include <stdint.h>
37 #include <stdlib.h>
38 #include <string.h>
39 #include <unistd.h>
40 
41 #include "image.h"
42 #include "format.h"
43 #include "mkimg.h"
44 
45 static struct mkimg_format *format;
46 
47 int
48 format_resize(lba_t end)
49 {
50 
51 	if (format == NULL)
52 		return (ENOSYS);
53 	return (format->resize(end));
54 }
55 
56 int
57 format_select(const char *spec)
58 {
59 	struct mkimg_format *f, **iter;
60 
61 	SET_FOREACH(iter, formats) {
62 		f = *iter;
63 		if (strcasecmp(spec, f->name) == 0) {
64 			format = f;
65 			return (0);
66 		}
67 	}
68 	return (EINVAL);
69 }
70 
71 struct mkimg_format *
72 format_selected(void)
73 {
74 
75 	return (format);
76 }
77 
78 int
79 format_write(int fd)
80 {
81 	lba_t size;
82 	int error;
83 
84 	if (format == NULL)
85 		return (ENOSYS);
86 	size = image_get_size();
87 	error = format->resize(size);
88 	if (!error)
89 		error = format->write(fd);
90 	return (error);
91 }
92