FatFs - DIR

## DIR

The `DIR` structure is used for the work area to read a directory by f_oepndir, f_readdir function. There is no member that can be changed by application.

    typedef struct _DIR_ {
        FATFS*  fs;         /* Pointer to the owner file system object */
        WORD    id;         /* Owner file system mount ID */
        WORD    index;      /* Current read/write index number */
        DWORD   sclust;     /* Table start cluster (0:Static table) */
        DWORD   clust;      /* Current cluster */
        DWORD   sect;       /* Current sector */
        BYTE*   dir;        /* Pointer to the current SFN entry in the win[] */
        BYTE*   fn;         /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
    #if _USE_LFN
        WCHAR*  lfn;        /* Pointer to the LFN working buffer */
        WORD    lfn_idx;    /* Last matched LFN index (0xFFFF:No LFN) */
    #endif
    } DIR;

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