driver.c

来自「在VC平台下调试通过的linux 0.11文件系统代码！ 对学习文件系统实现的朋」· C语言 代码 · 共 23 行

#include <stdio.h>
#include "fs.h"

FILE * fp = NULL;


void ll_rw_block(int rw, struct buffer_head * bh)
{
	if (!fp)
		fp = fopen("E:\\Project\\FSDev\\rootimage-0.11", "rw");

	fseek(fp, bh->b_blocknr * 1024, SEEK_SET); 
	if (READ == rw)
	{
		fread(bh->b_data, 1024, 1, fp);
		bh->b_uptodate = 1;
	}
	else if (WRITE == rw)
	{
		fwrite(bh->b_data, 1024, 1, fp);
	}
}