Read directory information
↓
Current directory setting
↓
Open file
↓
Access to files
↓
Close file 

This procedure is illustrated by two examples.

 #define MAX_DIR 10 / * Maximum number of directory information * / 

GfsDirTbl dirtbl; / * Directory information storage area * /
GfsDirId dirid [MAX_DIR]; / * Directory information storage area * /
Sint32 dir_fid; / * Contains directory file identifier * /
Sint32 fid; / * Contains the identifier of the file to be accessed * /
GfsHn gfs; / * File handle of the file to access * / 

GFS_DIRTBL_TYPE (&dirtbl) = GFS_DIR_ID;
GFS_DIRTBL_NDIR (&dirtbl) = MAX_DIR;
GFS_DIRTBL_DIRID(&dirtbl) = dirid;
GFS_LoadDir (dir_fid, & dirtbl); / * Read directory information * / 

GFS_SetDir (& dirtbl); / * Set current directory * / 

/ * Set the identifier of the file that accesses fid * /
gfs = GFS_Open(fid);
/*
* File access here
*/
GFS_Close(gfs);