<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta http-equiv="Content-Style-Type" content="text/css"> <link rel="up" title="FatFs" href="../00index_e.html"> <link rel="alternate" hreflang="ja" title="Japanese" href="../ja/truncate.html"> <link rel="stylesheet" href="../css_e.css" type="text/css" media="screen" title="ELM Default"> <title>FatFs - f_truncate</title> </head> <body> <div class="para func"> <h2>f_truncate</h2> <p>The f_truncate function truncates the file size.</p> <pre> FRESULT f_truncate ( FIL* <span class="arg">fp</span> <span class="c">/* [IN] File object */</span> ); </pre> </div> <div class="para arg"> <h4>Parameter</h4> <dl class="par"> <dt>fp</dt> <dd>Pointer to the open file object to be truncated.</dd> </dl> </div> <div class="para ret"> <h4>Return Values</h4> <p> <a href="rc.html#ok">FR_OK</a>, <a href="rc.html#de">FR_DISK_ERR</a>, <a href="rc.html#ie">FR_INT_ERR</a>, <a href="rc.html#dn">FR_DENIED</a>, <a href="rc.html#io">FR_INVALID_OBJECT</a>, <a href="rc.html#tm">FR_TIMEOUT</a> </p> </div> <div class="para desc"> <h4>Description</h4> <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> </div> <div class="para comp"> <h4>QuickInfo</h4> <p>Available when <tt>_FS_READONLY == 0</tt> and <tt>_FS_MINIMIZE == 0</tt>.</p> </div> <div class="para ref"> <h4>See Also</h4> <p><tt><a href="open.html">f_open</a>, <a href="lseek.html">f_lseek</a>, <a href="sfile.html">FIL</a></tt></p> </div> <p class="foot"><a href="../00index_e.html">Return</a></p> </body> </html>