savelij13
238747ef97
- Added FAT12. Removed unbuffered mode. - Fixed a problem on small (<32M) patition.
90 lines
2.7 KiB
HTML
90 lines
2.7 KiB
HTML
<!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="stylesheet" href="../css_e.css" type="text/css" media="screen" title="ELM Default">
|
|
<title>FatFs - f_chmod</title>
|
|
</head>
|
|
|
|
<body>
|
|
|
|
<div class="para">
|
|
<h2>f_chmod</h2>
|
|
<p>The f_chmod changes the attribute of a file or directory.</p>
|
|
<pre>
|
|
FRESULT f_chmod (
|
|
const char* <em>FileName</em>, // Pointer to the file or directory
|
|
BYTE <em>Attribute</em>, // Attribute flags
|
|
BYTE <em>AttributeMask</em> // Attribute masks
|
|
);
|
|
</pre>
|
|
</div>
|
|
|
|
<div class="para">
|
|
<h4>Parameter</h4>
|
|
<dl class="par">
|
|
<dt>FileName</dt>
|
|
<dd>Pointer to the null-terminated string that specifies a file or directory to be changed</dd>
|
|
<dt>Attribute</dt>
|
|
<dd>Attribute flags to be set in one or more combination of the following flags. The specified flags are set and others are cleard.<br>
|
|
<table class="lst">
|
|
<tr><th>Attribute</th><th>Description</th></td>
|
|
<tr><td>AR_RDO</td><td>Read only</td></td>
|
|
<tr><td>AR_ARC</td><td>Archive</td></td>
|
|
<tr><td>AR_SYS</td><td>System</td></td>
|
|
<tr><td>AR_HID</td><td>Hidden</td></td>
|
|
</table>
|
|
</dd>
|
|
<dt>AttributeMask</dt>
|
|
<dd>Attribute mask that specifies which attribute is changed. The specified aattributes are set or cleard.</dd>
|
|
</dl>
|
|
</div>
|
|
|
|
|
|
<div class="para">
|
|
<h4>Return Values</h4>
|
|
<dl class="ret">
|
|
<dt>FR_OK</dt>
|
|
<dd>The function succeeded.</dd>
|
|
<dt>FR_NOFILE</dt>
|
|
<dd>Could not find the file.</dd>
|
|
<dt>FR_NOPATH</dt>
|
|
<dd>Could not find the path.</dd>
|
|
<dt>FR_INVALID_NAME</dt>
|
|
<dd>The file name is invalid.</dd>
|
|
<dt>FR_NOT_READY</dt>
|
|
<dd>The disk drive cannot work due to no medium in the drive or any other reason.</dd>
|
|
<dt>FR_WRITE_PROTECTED</dt>
|
|
<dd>The medium is in write protected.</dd>
|
|
<dt>FR_RW_ERROR</dt>
|
|
<dd>Any error occured in low level disk I/O.</dd>
|
|
<dt>FR_INCORRECT_DISK_CHANGE</dt>
|
|
<dd>Incorrect disk removal, such as a medium change during any file is opend, has been occured.</dd>
|
|
<dt>FR_NOT_ENABLED</dt>
|
|
<dd>FatFs module has not been enabled.</dd>
|
|
<dt>FR_NO_FILESYSTEM</dt>
|
|
<dd>There is no valid FAT partition on the disk.</dd>
|
|
</dl>
|
|
</div>
|
|
|
|
|
|
<div class="para">
|
|
<h4>Description</h4>
|
|
<p>The f_chmod changes the attribute of a file or directory. This function is not supported in read-only configuration.</p>
|
|
</div>
|
|
|
|
|
|
<div class="para">
|
|
<h4>Sample Code</h4>
|
|
<pre>
|
|
// Set read-only flag, clear archive flag and others are not changed.
|
|
f_chmod("/file.txt", AR_RDO, AR_RDO | AR_ARC);
|
|
</pre>
|
|
</div>
|
|
|
|
<p class="foot"><a href="../00index_e.html">Return</a></p>
|
|
</body>
|
|
</html>
|