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="stylesheet" href="../css_e.css" type="text/css" media="screen" title="ELM Default"> 7<title>FatFs - f_utime</title> 8</head> 9 10<body> 11 12<div class="para func"> 13<h2>f_utime</h2> 14<p>The f_utime function changes the timestamp of a file or sub-directory.</p> 15<pre> 16FRESULT f_utime ( 17 const TCHAR* <span class="arg">path</span>, <span class="c">/* [IN] Object name */</span> 18 const FILINFO* <span class="arg">fno</span> <span class="c">/* [IN] Time and data to be set */</span> 19); 20</pre> 21</div> 22 23<div class="para arg"> 24<h4>Parameters</h4> 25<dl class="par"> 26<dt>path</dt> 27<dd>Pointer to the null-terminated string that specifies an <a href="filename.html">object</a> to be changed. If a null pointer is given, the function fails with <tt>FR_INVALID_DRIVE</tt>.</dd> 28<dt>fno</dt> 29<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> 30</dl> 31</div> 32 33 34<div class="para ret"> 35<h4>Return Values</h4> 36<p> 37<a href="rc.html#ok">FR_OK</a>, 38<a href="rc.html#de">FR_DISK_ERR</a>, 39<a href="rc.html#ie">FR_INT_ERR</a>, 40<a href="rc.html#nr">FR_NOT_READY</a>, 41<a href="rc.html#ok">FR_NO_FILE</a>, 42<a href="rc.html#np">FR_NO_PATH</a>, 43<a href="rc.html#in">FR_INVALID_NAME</a>, 44<a href="rc.html#wp">FR_WRITE_PROTECTED</a>, 45<a href="rc.html#id">FR_INVALID_DRIVE</a>, 46<a href="rc.html#ne">FR_NOT_ENABLED</a>, 47<a href="rc.html#ns">FR_NO_FILESYSTEM</a>, 48<a href="rc.html#tm">FR_TIMEOUT</a>, 49<a href="rc.html#nc">FR_NOT_ENOUGH_CORE</a> 50</p> 51</div> 52 53 54<div class="para desc"> 55<h4>Description</h4> 56<p>The <tt>f_utime</tt> function changes the timestamp of a file or sub-directory</p> 57</div> 58 59 60<div class="para use"> 61<h4>Example</h4> 62<pre> 63FRESULT set_timestamp ( 64 char *obj, <span class="c">/* Pointer to the file name */</span> 65 int year, 66 int month, 67 int mday, 68 int hour, 69 int min, 70 int sec 71) 72{ 73 FILINFO fno; 74 75 fno.fdate = (WORD)(((year - 1980) * 512U) | month * 32U | mday); 76 fno.ftime = (WORD)(hour * 2048U | min * 32U | sec / 2U); 77 78 return <em>f_utime</em>(obj, &fno); 79} 80</pre> 81</div> 82 83 84<div class="para comp"> 85<h4>QuickInfo</h4> 86<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> 87</div> 88 89 90<div class="para ref"> 91<h4>See Also</h4> 92<p><tt><a href="stat.html">f_stat</a>, <a href="sfileinfo.html">FILINFO</a></tt></p> 93</div> 94 95 96<p class="foot"><a href="../00index_e.html">Return</a></p> 97</body> 98</html> 99