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83 lines
1.9 KiB
83 lines
1.9 KiB
// 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, <[email protected]> |
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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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