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| | 6 | <link rel="up" title="FatFs" href="../00index_e.html">\r |
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| | 9 | <title>FatFs - FIL</title>\r |
| | 10 | </head>\r |
| | 11 | \r |
| | 12 | <body>\r |
| | 13 | \r |
| | 14 | <div class="para">\r |
| | 15 | <h2>FIL</h2>\r |
| | 16 | <p>The <tt>FIL</tt> structure (file object) holds the state of an open file. It is created by <tt>f_open</tt> function and discarded by <tt>f_close</tt> function. Application program must not modify any member in this structure except for <tt>cltbl</tt>, or any data on the FAT volume can be collapsed. Note that a sector buffer is defined in this structure at non-tiny configuration (<tt>_FS_TINY == 0</tt>), so that the <tt>FIL</tt> structures at that configuration should not be defined as auto variable.</p>\r |
| | 17 | \r |
| | 18 | <pre>\r |
| | 19 | <span class="k">typedef</span> <span class="k">struct</span> {\r |
| | 20 | _FDID obj; <span class="c">/* Owner file sytem object and object identifier */</span>\r |
| | 21 | BYTE flag; <span class="c">/* File object status flags */</span>\r |
| | 22 | BYTE err; <span class="c">/* Abort flag (error code) */</span>\r |
| | 23 | FSIZE_t fptr; <span class="c">/* File read/write pointer (Byte offset origin from top of the file) */</span>\r |
| | 24 | DWORD clust; <span class="c">/* Current cluster of fptr (One cluster behind if fptr is on the cluster boundary. Invalid if fptr == 0.) */</span>\r |
| | 25 | DWORD sect; <span class="c">/* Current data sector (Can be invalid if fptr is on the cluster boundary.)*/</span>\r |
| | 26 | <span class="k">#if</span> !_FS_READONLY\r |
| | 27 | DWORD dir_sect; <span class="c">/* Sector number containing the directory entry */</span>\r |
| | 28 | BYTE* dir_ptr; <span class="c">/* Ponter to the directory entry in the window */</span>\r |
| | 29 | <span class="k">#endif</span>\r |
| | 30 | <span class="k">#if</span> _USE_FASTSEEK\r |
| | 31 | DWORD* cltbl; <span class="c">/* Pointer to the cluster link map table (Nulled on file open. Set by application.) */</span>\r |
| | 32 | <span class="k">#endif</span>\r |
| | 33 | <span class="k">#if</span> !_FS_TINY\r |
| | 34 | BYTE buf[_MAX_SS]; <span class="c">/* File private data transfer buffer (Always valid if fptr is not on the sector boundary but can be invalid if fptr is on the sector boundary.) */</span>\r |
| | 35 | <span class="k">#endif</span>\r |
| | 36 | } FIL;\r |
| | 37 | </pre>\r |
| | 38 | \r |
| | 39 | </div>\r |
| | 40 | \r |
| | 41 | <p class="foot"><a href="../00index_e.html">Return</a></p>\r |
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projects / z180-stamp.git / blame_incremental