savelij13
f9a05f6eda
- Added selection of character encoding on the file. (_STRF_ENCODE) - Added f_closedir(). - Added forced full FAT scan for f_getfree(). (_FS_NOFSINFO) - Added forced mount feature with changes of f_mount(). - Improved behavior of volume auto detection. - Improved write throughput of f_puts() and f_printf(). - Changed argument of f_chdrive(), f_mkfs(), disk_read() and disk_write(). - Fixed f_write() can be truncated when the file size is close to 4GB. - Fixed f_open(), f_mkdir() and f_setlabel() can return incorrect error code.
100 lines
2.6 KiB
HTML
100 lines
2.6 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<html lang="ja">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=Shift_JIS">
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<meta http-equiv="Content-Style-Type" content="text/css">
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<link rel="up" title="FatFs" href="../00index_j.html">
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<link rel="alternate" hreflang="en" title="English" href="../en/utime.html">
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<link rel="stylesheet" href="../css_j.css" type="text/css" media="screen" title="ELM Default">
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<title>FatFs - f_utime</title>
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</head>
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<body>
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<div class="para func">
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<h2>f_utime</h2>
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<p>ファイルまたはサブ・ディレクトリのタイムスタンプを変更します。</p>
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<pre>
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FRESULT f_utime (
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const TCHAR* <span class="arg">path</span>, <span class="c">/* [IN] オブジェクト名へのポインタ */</span>
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const FILINFO* <span class="arg">fno</span> <span class="c">/* [IN] 設定する日付 */</span>
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);
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</pre>
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</div>
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<div class="para arg">
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<h4>引数</h4>
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<dl class="par">
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<dt>path</dt>
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<dd>変更対象のオブジェクトの<a href="filename.html">パス名</a>を示すヌル文字<tt>'\0'</tt>終端の文字列を指定します。</dd>
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<dt>fno</dt>
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<dd>設定する日付と時間を<tt>fdate</tt>と<tt>ftime</tt>メンバに設定された<tt>FILINFO</tt>構造体へのポインタ。他のメンバはこの関数では意味を持ちません。</dd>
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</dl>
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</div>
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<div class="para ret">
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<h4>戻り値</h4>
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<p>
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<a href="rc.html#ok">FR_OK</a>,
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<a href="rc.html#de">FR_DISK_ERR</a>,
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<a href="rc.html#ie">FR_INT_ERR</a>,
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<a href="rc.html#nr">FR_NOT_READY</a>,
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<a href="rc.html#ok">FR_NO_FILE</a>,
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<a href="rc.html#np">FR_NO_PATH</a>,
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<a href="rc.html#in">FR_INVALID_NAME</a>,
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<a href="rc.html#wp">FR_WRITE_PROTECTED</a>,
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<a href="rc.html#id">FR_INVALID_DRIVE</a>,
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<a href="rc.html#ne">FR_NOT_ENABLED</a>,
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<a href="rc.html#ns">FR_NO_FILESYSTEM</a>,
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<a href="rc.html#tm">FR_TIMEOUT</a>,
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<a href="rc.html#nc">FR_NOT_ENOUGH_CORE</a>
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</p>
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</div>
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<div class="para desc">
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<h4>解説</h4>
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<p>オブジェクトのタイムスタンプを変更します。</p>
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</div>
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<div class="para use">
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<h4>使用例</h4>
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<pre>
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FRESULT set_timestamp (
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char *obj, <span class="c">/* ファイル名へのポインタ */</span>
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int year,
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int month,
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int mday,
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int hour,
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int min,
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int sec
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)
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{
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FILINFO fno;
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fno.fdate = (WORD)(((year - 1980) * 512U) | month * 32U | mday);
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fno.ftime = (WORD)(hour * 2048U | min * 32U | sec / 2U);
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return f_utime(obj, &fno);
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}
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</pre>
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</div>
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<div class="para comp">
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<h4>対応情報</h4>
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<p><tt>_FS_READONLY == 0</tt>で、且つ<tt>_FS_MINIMIZE == 0</tt>のときに使用可能です。</p>
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</div>
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<div class="para ref">
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<h4>参照</h4>
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<p><tt><a href="stat.html">f_stat</a>, <a href="sfileinfo.html">FILINFO</a></tt></p>
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</div>
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<p class="foot"><a href="../00index_j.html">戻る</a></p>
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</body>
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</html>
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