name.c

操作系统实验,文件系统,c语言实现的

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

unsigned int namei(char *name)    /* namei*/
{
	int i,notfound=1;
	for(i=0;((i<dir.size)&&(notfound));i++)
	{
		if((!strcmp(dir.direct[i].d_name,name))&&(dir.direct[i].d_ino!=0))
			return dir.direct[i].d_ino;    /* find */
	}
	/* not find*/
	return NULL;
};

unsigned short iname(char *name)    /*iname*/
{
	int i,notfound=1;
	for(i=0;((i<DIRNUM)&&(notfound));i++)
		if(dir.direct[i].d_ino==0)
		{
			notfound=0;
			break;
		}
		if(notfound)
		{
			printf("\nThe current dlrectory is full!!! \n");
			return NULL;
		}
		else
		{
			strcpy(dir.direct[i].d_name,name);
			dir.direct[i].d_ino=1;    /*送一个非0正数，即可*/
			return i;
		}
}