#include "stdio.h"
#include "string.h"
#include "conio.h"
#include "stdlib.h"
#define MAXNAME 25 /*the largest length of mfdname,ufdname,filename*/
#define MAXCHILD 50 /*the largest child*/
#define MAX (MAXCHILD*MAXCHILD) /*the size of fpaddrno*/
typedef struct /*the structure of OSFILE*/
{int fpaddr; /*file physical address*/
int flength; /*file length*/
int fmode; /*file mode:0-Read Only;1-Write Only;2-Read and Write(default);*/
char fname[MAXNAME]; /*file name*/
} OSFILE;
typedef struct /*the structure of OSUFD*/
{char ufdname[MAXNAME]; /*ufd name*/
OSFILE ufdfile[MAXCHILD]; /*ufd own file*/
}OSUFD;
typedef struct /*the structure of OSUFD'LOGIN*/
{char ufdname[MAXNAME]; /*ufd name*/
char ufdpword[8]; /*ufd password*/
} OSUFD_LOGIN;
typedef struct /*file open mode*/
{int ifopen; /*ifopen:0-close,1-open*/
int openmode; /*0-read only,1-write only,2-read and write,3-initial*/
}OSUFD_OPENMODE;
OSUFD *ufd[MAXCHILD]; /*ufd and ufd own files*/
OSUFD_LOGIN ufd_lp;
int ucount=0; /*the count of mfd's ufds*/
int fcount[MAXCHILD]; /*the count of ufd's files*/
int loginsuc=0; /*whether login successfully*/
char username[MAXNAME]; /*record login user's name22*/
char dirname[MAXNAME];/*record current directory*/
int fpaddrno[MAX]; /*record file physical address num*/
OSUFD_OPENMODE ifopen[MAXCHILD][MAXCHILD]; /*record file open/close*/
int wgetchar; /*whether getchar()*/
FILE *fp_mfd,*fp_ufd,*fp_file_p,*fp_file;
void main()
{int i,j,choice1;
char choice[50]; /*choice operation:dir,create,delete,open,delete,modify,read,write*/
int choiceend=1; /*whether choice end*/
char *rtrim(char *str); /*remove the trailing blanks.*/
char *ltrim(char *str); /*remove the heading blanks.*/
void LoginF(); /*LOGIN FileSystem*/
void DirF(); /*Dir FileSystem*/
void CdF(); /*Change Dir*/
void CreateF(); /*Create File*/
void DeleteF(); /*Delete File*/
void ModifyFM(); /*Modify FileMode*/
void OpenF(); /*Open File*/
void CloseF(); /*Close File*/
void ReadF(); /*Read File*/
void WriteF(); /*Write File*/
