#include?
#include?“filesys.h“


unsigned?int?access（user_idinode1mode）
unsigned?short?user_id;
struct?inode*?inode1;
unsigned?short?mode;
{
	switch（mode）
		{
		case?READ:
			if（inode1->di_mode&ODIREAD）?return?1;
			if（（inode1->di_mode&GDIREAD）&&（strcmp（directory_1.users[user_id].u_gidinode1->di_gid）==0））?return?1;
			if（（inode1->di_mode&UDIREAD）&&（strcmp（directory_1.users[user_id].u_uidinode1->di_uid）==0））?return?1;
			return?0;
		case?WRITE:
			if（inode1->di_mode&ODIWRITE）?return?1;
			if（（inode1->di_mode&GDIWRITE）&&（strcmp（directory_1.users[user_id].u_gidinode1->di_gid）==0?））?return?1;
			if（（inode1->di_mode&UDIWRIRE）&&（strcmp（directory_1.users[user_id].u_uidinode1->di_uid）==0））?return?1;
			return?0;
		case?EXECUTE:		
			if（inode1->di_mode&ODIEXECUTE）?return?1;
			if（（inode1->di_mode&GDIEXECUTE）&&（strcmp（directory_1.users[user_id].u_gid?inode1->di_gid?）==0））?return?1;
			if（（inode1->di_mode&UDIEXECUTE）&&（strcmp（directory_1.users[user_id].u_uidinode1->di_uid）==0））?return?1;
			return?0;
		defalut:
				return?0;
		}	
}