1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
/*
* Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2016 FUKAUMI Naoki <naobsd@gmail.com>
*
* Based on mkdniimg.c
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h> /* for unlink() */
#include <libgen.h>
#include <getopt.h> /* for getopt() */
#include <stdarg.h>
#include <errno.h>
#include <sys/stat.h>
#define DNI_HDR_LEN 128
/*
* Globals
*/
static char *ifname;
static char *progname;
static char *ofname;
static char *version = "0.00_0.00";
static char *region = "JP";
static char *rootfs_size;
static char *kernel_size;
static char *board_id;
/*
* Message macros
*/
#define ERR(fmt, ...) do { \
fflush(0); \
fprintf(stderr, "[%s] *** error: " fmt "\n", \
progname, ## __VA_ARGS__ ); \
} while (0)
#define ERRS(fmt, ...) do { \
int save = errno; \
fflush(0); \
fprintf(stderr, "[%s] *** error: " fmt ": %s\n", \
progname, ## __VA_ARGS__, strerror(save)); \
} while (0)
void usage(int status)
{
FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
fprintf(stream,
"\n"
"Options:\n"
" -B <board> create image for the board specified with <board>\n"
" -i <file> read input from the file <file>\n"
" -o <file> write output to the file <file>\n"
" -v <version> set image version to <version>\n"
" -r <region> set image region to <region>\n"
" -R <rootfs_size> set RootfsSize to <rootfs_size>\n"
" -K <kernel_size> set KernelSize to <kernel_size>\n"
" -h show this screen\n"
);
exit(status);
}
int main(int argc, char *argv[])
{
int res = EXIT_FAILURE;
int buflen;
int err;
struct stat st;
char *buf;
int i;
uint8_t csum;
FILE *outfile, *infile;
progname = basename(argv[0]);
while ( 1 ) {
int c;
c = getopt(argc, argv, "B:i:o:v:r:R:K:h");
if (c == -1)
break;
switch (c) {
case 'B':
board_id = optarg;
break;
case 'i':
ifname = optarg;
break;
case 'o':
ofname = optarg;
break;
case 'v':
version = optarg;
break;
case 'r':
region = optarg;
break;
case 'R':
rootfs_size = optarg;
break;
case 'K':
kernel_size = optarg;
break;
case 'h':
usage(EXIT_SUCCESS);
break;
default:
usage(EXIT_FAILURE);
break;
}
}
if (board_id == NULL) {
ERR("no board specified");
goto err;
}
if (rootfs_size == NULL) {
ERR("no rootfs_size specified");
goto err;
}
if (kernel_size == NULL) {
ERR("no kernel_size specified");
goto err;
}
if (ifname == NULL) {
ERR("no input file specified");
goto err;
}
if (ofname == NULL) {
ERR("no output file specified");
goto err;
}
err = stat(ifname, &st);
if (err){
ERRS("stat failed on %s", ifname);
goto err;
}
buflen = st.st_size + DNI_HDR_LEN + 1;
buf = malloc(buflen);
if (!buf) {
ERR("no memory for buffer\n");
goto err;
}
memset(buf, 0, DNI_HDR_LEN);
snprintf(buf, DNI_HDR_LEN, "device:%s\nversion:%s\nregion:%s\n"
"RootfsSize:%s\nKernelSize:%s\nInfoHeadSize:128\n",
board_id, version, region, rootfs_size, kernel_size);
buf[DNI_HDR_LEN - 2] = 0x12;
buf[DNI_HDR_LEN - 1] = 0x32;
infile = fopen(ifname, "r");
if (infile == NULL) {
ERRS("could not open \"%s\" for reading", ifname);
goto err_free;
}
errno = 0;
fread(buf + DNI_HDR_LEN, st.st_size, 1, infile);
if (errno != 0) {
ERRS("unable to read from file %s", ifname);
goto err_close_in;
}
csum = 0;
for (i = 0; i < (st.st_size + DNI_HDR_LEN); i++)
csum += buf[i];
csum = 0xff - csum;
buf[st.st_size + DNI_HDR_LEN] = csum;
outfile = fopen(ofname, "w");
if (outfile == NULL) {
ERRS("could not open \"%s\" for writing", ofname);
goto err_close_in;
}
errno = 0;
fwrite(buf, buflen, 1, outfile);
if (errno) {
ERRS("unable to write to file %s", ofname);
goto err_close_out;
}
res = EXIT_SUCCESS;
fflush(outfile);
err_close_out:
fclose(outfile);
if (res != EXIT_SUCCESS) {
unlink(ofname);
}
err_close_in:
fclose(infile);
err_free:
free(buf);
err:
return res;
}
|
