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git.ipfire.org Git - people/ms/u-boot.git/blob - tools/ubsha1.c
3 * Heiko Schocher, DENX Software Engineering, <hs@denx.de>
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 #include "os_support.h"
34 int main (int argc
, char **argv
)
36 unsigned char output
[20];
40 char *cmdname
= *argv
;
44 unsigned char *ptroff
;
50 ifd
= open (imagefile
, O_RDWR
|O_BINARY
);
52 fprintf (stderr
, "%s: Can't open %s: %s\n",
53 cmdname
, imagefile
, strerror(errno
));
56 if (fstat (ifd
, &sbuf
) < 0) {
57 fprintf (stderr
, "%s: Can't stat %s: %s\n",
58 cmdname
, imagefile
, strerror(errno
));
62 ptr
= (unsigned char *)mmap(0, len
,
63 PROT_READ
, MAP_SHARED
, ifd
, 0);
64 if (ptr
== (unsigned char *)MAP_FAILED
) {
65 fprintf (stderr
, "%s: Can't read %s: %s\n",
66 cmdname
, imagefile
, strerror(errno
));
70 /* create a copy, so we can blank out the sha1 sum */
72 memcpy (data
, ptr
, len
);
74 ptroff
= &data
[len
+ off
];
75 for (i
= 0; i
< SHA1_SUM_LEN
; i
++) {
79 sha1_csum ((unsigned char *) data
, len
, (unsigned char *)output
);
81 printf ("U-Boot sum:\n");
82 for (i
= 0; i
< 20 ; i
++) {
83 printf ("%02X ", output
[i
]);
86 /* overwrite the sum in the bin file, with the actual */
87 lseek (ifd
, SHA1_SUM_POS
, SEEK_END
);
88 if (write (ifd
, output
, SHA1_SUM_LEN
) != SHA1_SUM_LEN
) {
89 fprintf (stderr
, "%s: Can't write %s: %s\n",
90 cmdname
, imagefile
, strerror(errno
));
95 (void) munmap((void *)ptr
, len
);