The FIL structure (file object) holds state of an open file. It is created by f_open() function and discarded by f_close() function. Application program must not modify any member in this structure except for cltbl. Note that a sector buffer is defined in this structure at non-tiny configuration, so that the FIL structures should not be defined as auto variable.
- --typedef struct { - FATFS* fs; /* Pointer to the owner file system object */ - WORD id; /* Owner file system mount ID */ - BYTE flag; /* File object status flags */ - BYTE err; /* Abort flag (error code) */ - DWORD fptr; /* File read/write pointer (Byte offset origin from top of the file) */ - DWORD fsize; /* File size in unit of byte */ - DWORD sclust; /* File start cluster */ - DWORD clust; /* Current cluster */ - DWORD dsect; /* Current data sector */ -#if !_FS_READONLY - DWORD dir_sect; /* Sector containing the directory entry */ - BYTE* dir_ptr; /* Ponter to the directory entry in the window */ -#endif -#if _USE_FASTSEEK - DWORD* cltbl; /* Pointer to the cluster link map table (Nulled on file open) */ -#endif -#if _FS_LOCK - UINT lockid; /* Fle lock ID */ -#endif -#if !_FS_TINY - BYTE buf[_MAX_SS]; /* File private data transfer buffer */ -#endif -} FIL; -- -