95 lines
1.6 KiB
C
95 lines
1.6 KiB
C
/*
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* Copyright (c) 2010 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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int main (int argc, char *argv[])
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{
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FILE *fp;
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unsigned char src;
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char *Buf, *a;
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int BufLen;
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int nbytes, fileLen;
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unsigned int checksum = 0;
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int i;
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if (argc != 4)
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{
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printf("Usage: mkbl1 <source file> <destination file> <size> \n");
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return -1;
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}
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BufLen = atoi(argv[3]);
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Buf = (char *)malloc(BufLen);
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memset(Buf, 0x00, BufLen);
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fp = fopen(argv[1], "rb");
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if( fp == NULL)
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{
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printf("source file open error\n");
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free(Buf);
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return -1;
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}
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fseek(fp, 0L, SEEK_END);
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fileLen = ftell(fp);
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fseek(fp, 0L, SEEK_SET);
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if ( BufLen > fileLen )
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{
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printf("Usage: unsupported size\n");
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free(Buf);
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fclose(fp);
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return -1;
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}
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nbytes = fread(Buf, 1, BufLen, fp);
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if ( nbytes != BufLen )
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{
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printf("source file read error\n");
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free(Buf);
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fclose(fp);
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return -1;
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}
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fclose(fp);
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for(i = 0;i < (14 * 1024) - 4;i++)
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{
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checksum += (unsigned char)(Buf[i]);
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}
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*(unsigned int*)(Buf+i) = checksum;
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fp = fopen(argv[2], "wb");
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if (fp == NULL)
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{
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printf("destination file open error\n");
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free(Buf);
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return -1;
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}
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a = Buf;
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nbytes = fwrite( a, 1, BufLen, fp);
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if ( nbytes != BufLen )
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{
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printf("destination file write error\n");
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free(Buf);
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fclose(fp);
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return -1;
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}
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free(Buf);
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fclose(fp);
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return 0;
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}
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