projects / z180-stamp.git / blame
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|---|---|---|
| 53668523 L |
1 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">\r |
| 2 | <html lang="en">\r | |
| 3 | <head>\r | |
| 289f6a14 | 4 | <meta http-equiv="Content-Type" content="text/html; charset=utf-8">\r |
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5 | <meta http-equiv="Content-Style-Type" content="text/css">\r |
| 6 | <link rel="up" title="FatFs" href="../00index_e.html">\r | |
| 7 | <link rel="alternate" hreflang="ja" title="Japanese" href="../ja/truncate.html">\r | |
| 8 | <link rel="stylesheet" href="../css_e.css" type="text/css" media="screen" title="ELM Default">\r | |
| 9 | <title>FatFs - f_truncate</title>\r | |
| 10 | </head>\r | |
| 11 | \r | |
| 12 | <body>\r | |
| 13 | \r | |
| 14 | <div class="para func">\r | |
| 15 | <h2>f_truncate</h2>\r | |
| 16 | <p>The f_truncate function truncates the file size.</p>\r | |
| 17 | <pre>\r | |
| 18 | FRESULT f_truncate (\r | |
| 19 | FIL* <span class="arg">fp</span> <span class="c">/* [IN] File object */</span>\r | |
| 20 | );\r | |
| 21 | </pre>\r | |
| 22 | </div>\r | |
| 23 | \r | |
| 24 | <div class="para arg">\r | |
| 25 | <h4>Parameter</h4>\r | |
| 26 | <dl class="par">\r | |
| 27 | <dt>fp</dt>\r | |
| 28 | <dd>Pointer to the open file object to be truncated.</dd>\r | |
| 29 | </dl>\r | |
| 30 | </div>\r | |
| 31 | \r | |
| 32 | \r | |
| 33 | <div class="para ret">\r | |
| 34 | <h4>Return Values</h4>\r | |
| 35 | <p>\r | |
| 36 | <a href="rc.html#ok">FR_OK</a>,\r | |
| 37 | <a href="rc.html#de">FR_DISK_ERR</a>,\r | |
| 38 | <a href="rc.html#ie">FR_INT_ERR</a>,\r | |
| 70702af1 | 39 | <a href="rc.html#dn">FR_DENIED</a>,\r |
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40 | <a href="rc.html#io">FR_INVALID_OBJECT</a>,\r |
| 41 | <a href="rc.html#tm">FR_TIMEOUT</a>\r | |
| 42 | </p>\r | |
| 43 | </div>\r | |
| 44 | \r | |
| 45 | \r | |
| 46 | <div class="para desc">\r | |
| 47 | <h4>Description</h4>\r | |
| 70702af1 | 48 | <p>The <tt>f_truncate</tt> function truncates the file size to the current file read/write pointer. This function has no effect if the file read/write pointer is already pointing end of the file.</p>\r |
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49 | </div>\r |
| 50 | \r | |
| 51 | \r | |
| 52 | <div class="para comp">\r | |
| 53 | <h4>QuickInfo</h4>\r | |
| 289f6a14 | 54 | <p>Available when <tt><a href="config.html#fs_readonly">FF_FS_READONLY</a> == 0</tt> and <tt><a href="config.html#fs_minimize">FF_FS_MINIMIZE</a> == 0</tt>.</p>\r |
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55 | </div>\r |
| 56 | \r | |
| 57 | \r | |
| 58 | <div class="para ref">\r | |
| 59 | <h4>See Also</h4>\r | |
| 60 | <p><tt><a href="open.html">f_open</a>, <a href="lseek.html">f_lseek</a>, <a href="sfile.html">FIL</a></tt></p>\r | |
| 61 | </div>\r | |
| 62 | \r | |
| 63 | \r | |
| 64 | <p class="foot"><a href="../00index_e.html">Return</a></p>\r | |
| 65 | </body>\r | |
| 66 | </html>\r |