Git Repo - J-u-boot.git/blame_incremental

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Commit	Line	Data
	1	// SPDX-License-Identifier: GPL-2.0+
	2	/*
	3	* (C) Copyright 2007
	4	* Heiko Schocher, DENX Software Engineering, <[email protected]>
	5	*/
	6
	7	#include "os_support.h"
	8	#include <stdio.h>
	9	#include <stdlib.h>
	10	#include <unistd.h>
	11	#include <fcntl.h>
	12	#include <errno.h>
	13	#include <string.h>
	14	#include <sys/stat.h>
	15	#include <u-boot/sha1.h>
	16
	17	int main (int argc, char **argv)
	18	{
	19	unsigned char output[20];
	20	int i, len;
	21
	22	char *imagefile;
	23	char cmdname = argv;
	24	unsigned char *ptr;
	25	unsigned char *data;
	26	struct stat sbuf;
	27	unsigned char *ptroff;
	28	int ifd;
	29	int off;
	30
	31	if (argc > 1) {
	32	imagefile = argv[1];
	33	ifd = open (imagefile, O_RDWR\|O_BINARY);
	34	if (ifd < 0) {
	35	fprintf (stderr, "%s: Can't open %s: %s\n",
	36	cmdname, imagefile, strerror(errno));
	37	exit (EXIT_FAILURE);
	38	}
	39	if (fstat (ifd, &sbuf) < 0) {
	40	fprintf (stderr, "%s: Can't stat %s: %s\n",
	41	cmdname, imagefile, strerror(errno));
	42	exit (EXIT_FAILURE);
	43	}
	44	len = sbuf.st_size;
	45	ptr = (unsigned char *)mmap(0, len,
	46	PROT_READ, MAP_SHARED, ifd, 0);
	47	if (ptr == (unsigned char *)MAP_FAILED) {
	48	fprintf (stderr, "%s: Can't read %s: %s\n",
	49	cmdname, imagefile, strerror(errno));
	50	exit (EXIT_FAILURE);
	51	}
	52
	53	/* create a copy, so we can blank out the sha1 sum */
	54	data = malloc (len);
	55	memcpy (data, ptr, len);
	56	off = SHA1_SUM_POS;
	57	ptroff = &data[len + off];
	58	for (i = 0; i < SHA1_SUM_LEN; i++) {
	59	ptroff[i] = 0;
	60	}
	61
	62	sha1_csum ((unsigned char ) data, len, (unsigned char )output);
	63
	64	printf ("U-Boot sum:\n");
	65	for (i = 0; i < 20 ; i++) {
	66	printf ("%02X ", output[i]);
	67	}
	68	printf ("\n");
	69	/* overwrite the sum in the bin file, with the actual */
	70	lseek (ifd, SHA1_SUM_POS, SEEK_END);
	71	if (write (ifd, output, SHA1_SUM_LEN) != SHA1_SUM_LEN) {
	72	fprintf (stderr, "%s: Can't write %s: %s\n",
	73	cmdname, imagefile, strerror(errno));
	74	exit (EXIT_FAILURE);
	75	}
	76
	77	free (data);
	78	(void) munmap((void *)ptr, len);
	79	(void) close (ifd);
	80	}
	81
	82	return EXIT_SUCCESS;
	83	}