84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2007
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* Heiko Schocher, DENX Software Engineering, <hs@denx.de>
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*/
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#include "os_support.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <u-boot/sha1.h>
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int main (int argc, char **argv)
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{
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unsigned char output[20];
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int i, len;
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char *imagefile;
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char *cmdname = *argv;
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unsigned char *ptr;
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unsigned char *data;
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struct stat sbuf;
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unsigned char *ptroff;
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int ifd;
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int off;
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if (argc > 1) {
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imagefile = argv[1];
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ifd = open (imagefile, O_RDWR|O_BINARY);
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if (ifd < 0) {
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fprintf (stderr, "%s: Can't open %s: %s\n",
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cmdname, imagefile, strerror(errno));
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exit (EXIT_FAILURE);
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}
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if (fstat (ifd, &sbuf) < 0) {
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fprintf (stderr, "%s: Can't stat %s: %s\n",
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cmdname, imagefile, strerror(errno));
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exit (EXIT_FAILURE);
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}
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len = sbuf.st_size;
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ptr = (unsigned char *)mmap(0, len,
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PROT_READ, MAP_SHARED, ifd, 0);
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if (ptr == (unsigned char *)MAP_FAILED) {
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fprintf (stderr, "%s: Can't read %s: %s\n",
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cmdname, imagefile, strerror(errno));
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exit (EXIT_FAILURE);
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}
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/* create a copy, so we can blank out the sha1 sum */
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data = malloc (len);
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memcpy (data, ptr, len);
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off = SHA1_SUM_POS;
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ptroff = &data[len + off];
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for (i = 0; i < SHA1_SUM_LEN; i++) {
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ptroff[i] = 0;
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}
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sha1_csum ((unsigned char *) data, len, (unsigned char *)output);
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printf ("U-Boot sum:\n");
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for (i = 0; i < 20 ; i++) {
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printf ("%02X ", output[i]);
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}
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printf ("\n");
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/* overwrite the sum in the bin file, with the actual */
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lseek (ifd, SHA1_SUM_POS, SEEK_END);
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if (write (ifd, output, SHA1_SUM_LEN) != SHA1_SUM_LEN) {
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fprintf (stderr, "%s: Can't write %s: %s\n",
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cmdname, imagefile, strerror(errno));
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exit (EXIT_FAILURE);
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}
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free (data);
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(void) munmap((void *)ptr, len);
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(void) close (ifd);
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}
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return EXIT_SUCCESS;
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}
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