]>
git.ipfire.org Git - people/ms/u-boot.git/blob - tools/ubsha1.c
3 * Heiko Schocher, DENX Software Engineering, <hs@denx.de>
5 * SPDX-License-Identifier: GPL-2.0+
8 #include "os_support.h"
18 int main (int argc
, char **argv
)
20 unsigned char output
[20];
24 char *cmdname
= *argv
;
28 unsigned char *ptroff
;
34 ifd
= open (imagefile
, O_RDWR
|O_BINARY
);
36 fprintf (stderr
, "%s: Can't open %s: %s\n",
37 cmdname
, imagefile
, strerror(errno
));
40 if (fstat (ifd
, &sbuf
) < 0) {
41 fprintf (stderr
, "%s: Can't stat %s: %s\n",
42 cmdname
, imagefile
, strerror(errno
));
46 ptr
= (unsigned char *)mmap(0, len
,
47 PROT_READ
, MAP_SHARED
, ifd
, 0);
48 if (ptr
== (unsigned char *)MAP_FAILED
) {
49 fprintf (stderr
, "%s: Can't read %s: %s\n",
50 cmdname
, imagefile
, strerror(errno
));
54 /* create a copy, so we can blank out the sha1 sum */
56 memcpy (data
, ptr
, len
);
58 ptroff
= &data
[len
+ off
];
59 for (i
= 0; i
< SHA1_SUM_LEN
; i
++) {
63 sha1_csum ((unsigned char *) data
, len
, (unsigned char *)output
);
65 printf ("U-Boot sum:\n");
66 for (i
= 0; i
< 20 ; i
++) {
67 printf ("%02X ", output
[i
]);
70 /* overwrite the sum in the bin file, with the actual */
71 lseek (ifd
, SHA1_SUM_POS
, SEEK_END
);
72 if (write (ifd
, output
, SHA1_SUM_LEN
) != SHA1_SUM_LEN
) {
73 fprintf (stderr
, "%s: Can't write %s: %s\n",
74 cmdname
, imagefile
, strerror(errno
));
79 (void) munmap((void *)ptr
, len
);