《FloppyDisk_Write 的编写》
Linux 版本：
#include <unistd.h> #include <fcntl.h> #include <stdio.h>
int main(int argc, char *argv[])
{
char boot_buf[512]; int fd_floppy, fd_src, result_write;
if(argc != 3)
{ printf("error: parameters error !\n"); return -1; }
if((fd_src = open(argv[1], O_RDONLY)) == -1)
{ printf("error: open %s failed !\n", argv[1]); return -1; }
read(fd_src, boot_buf, 512);
if((fd_floppy = open(argv[2], O_RDWR)) == -1)
{ printf("error: open %s failed !\n", argv[2]); exit(1); }
lseek(fd_floppy, 0, SEEK_SET);
if((result_write = write(fd_floppy, boot_buf, 512)) == -1)
{ printf("error: write %s failed !\n", argv[2]); exit(1); }
printf("Write data from %s to %s successfully !\n", argv[1], argv[2]);
return 1;
}
Windows 版本：
#include <stdio.h> #include <stdlib.h>
#define BUF_SIZE 512
long FileSize(FILE *fp) // it is use for get the file size;
{
fseek(fp, 0L, SEEK_SET);
fseek(fp, 0L, SEEK_END);
long size = ftell(fp);
fseek(fp, 0L, SEEK_SET);
return size;
}
int main(int argc, char* argv[])
{
FILE *fp_src, *fp_des;
char buffer[BUF_SIZE];
int count;
if((fp_src = fopen(argv[1], "r")) == NULL)
{
printf("\topen %s failed !\n", argv[1]); return 0;
}
if((fp_des = fopen(argv[2], "r+")) == NULL)
{
printf("\topen %s failed !\n", argv[2]);
fclose(fp_src);
return 0;
}
// Init_Img(fp_des);
// read 512 bytes data from src_file ;
count = fread(buffer, BUF_SIZE-2, 1, fp_src); //once you use the file ok, you should close the file;
fclose(fp_src);
if(count != 1)
{
printf("\tread %s error !\n", argv[1]);
return 0;
} // then set the buffer[510] buffer[511];
buffer[510] = 0x55;
buffer[511] = 0xAA;
printf("the size of %s is : %ld\n", argv[1], FileSize(fp_src));
printf("the size of %s is : %ld\n", argv[2], FileSize(fp_des)); // write 512 bytes data to des_file; fseek(fp_des, 0, SEEK_CUR); fflush(fp_des);
count = fwrite(buffer, BUF_SIZE, 1, fp_des);
printf("the size of %s is : %ld\n", argv[2], FileSize(fp_des));
fclose(fp_des);
if(count != 1)
{
printf("\twrite %s error !\n", argv[2]);
return 0;
}
printf("\twrite successfully !\n");
return 1;
}
// 注意：Windows 下编写的这个程序比较苦逼；
// 你应当注意fopen 函数的相关用法，尤其是打开模式；((fp_des = fopen(argv[2], "r+")) 。。。mean that .......;
