readf.c

操作系统简单的登入程序

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

void* readfile(char* name)
{
	unsigned short nid;
	
	char* content;

	struct  inode* pinode;

	nid=map2inode(name);
	
	if(nid==MAPERR)
		return NULL;

	pinode=(struct inode*)posinode(nid);
	
	if(access(currentuser,pinode,READ))
		content=blockread(pinode);
	else
		content="YOUR PRIVILIEGE IS LIMITED";

	return content;
}