1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> 2<html lang="en"> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 5<meta http-equiv="Content-Style-Type" content="text/css"> 6<link rel="up" title="FatFs" href="../00index_e.html"> 7<link rel="alternate" hreflang="ja" title="Japanese" href="../ja/utime.html"> 8<link rel="stylesheet" href="../css_e.css" type="text/css" media="screen" title="ELM Default"> 9<title>FatFs - f_utime</title> 10</head> 11 12<body> 13 14<div class="para func"> 15<h2>f_utime</h2> 16<p>The f_utime function changes the timestamp of a file or sub-directory.</p> 17<pre> 18FRESULT f_utime ( 19 const TCHAR* <span class="arg">path</span>, <span class="c">/* [IN] Object name */</span> 20 const FILINFO* <span class="arg">fno</span> <span class="c">/* [IN] Time and data to be set */</span> 21); 22</pre> 23</div> 24 25<div class="para arg"> 26<h4>Parameters</h4> 27<dl class="par"> 28<dt>path</dt> 29<dd>Pointer to the null-terminated string that specifies an <a href="filename.html">object</a> to be changed.</dd> 30<dt>fno</dt> 31<dd>Pointer to the file information structure that has a timestamp to be set in member fdate and ftime. Do not care any other members.</dd> 32</dl> 33</div> 34 35 36<div class="para ret"> 37<h4>Return Values</h4> 38<p> 39<a href="rc.html#ok">FR_OK</a>, 40<a href="rc.html#de">FR_DISK_ERR</a>, 41<a href="rc.html#ie">FR_INT_ERR</a>, 42<a href="rc.html#nr">FR_NOT_READY</a>, 43<a href="rc.html#ok">FR_NO_FILE</a>, 44<a href="rc.html#np">FR_NO_PATH</a>, 45<a href="rc.html#in">FR_INVALID_NAME</a>, 46<a href="rc.html#wp">FR_WRITE_PROTECTED</a>, 47<a href="rc.html#id">FR_INVALID_DRIVE</a>, 48<a href="rc.html#ne">FR_NOT_ENABLED</a>, 49<a href="rc.html#ns">FR_NO_FILESYSTEM</a>, 50<a href="rc.html#tm">FR_TIMEOUT</a>, 51<a href="rc.html#nc">FR_NOT_ENOUGH_CORE</a> 52</p> 53</div> 54 55 56<div class="para desc"> 57<h4>Description</h4> 58<p>The <tt>f_utime</tt> function changes the timestamp of a file or sub-directory</p> 59</div> 60 61 62<div class="para use"> 63<h4>Example</h4> 64<pre> 65FRESULT set_timestamp ( 66 char *obj, <span class="c">/* Pointer to the file name */</span> 67 int year, 68 int month, 69 int mday, 70 int hour, 71 int min, 72 int sec 73) 74{ 75 FILINFO fno; 76 77 fno.fdate = (WORD)(((year - 1980) * 512U) | month * 32U | mday); 78 fno.ftime = (WORD)(hour * 2048U | min * 32U | sec / 2U); 79 80 return <em>f_utime</em>(obj, &fno); 81} 82</pre> 83</div> 84 85 86<div class="para comp"> 87<h4>QuickInfo</h4> 88<p>Available when <tt><a href="config.html#fs_readonly">FF_FS_READONLY</a> == 0</tt> and <tt><a href="config.html#use_chmod">FF_USE_CHMOD</a> == 1</tt>.</p> 89</div> 90 91 92<div class="para ref"> 93<h4>See Also</h4> 94<p><tt><a href="stat.html">f_stat</a>, <a href="sfileinfo.html">FILINFO</a></tt></p> 95</div> 96 97<p class="foot"><a href="../00index_e.html">Return</a></p> 98</body> 99</html> 100