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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [Common/] [FileSystem/] [FatFs-0.7e/] [doc/] [en/] [chmod.html] - Rev 637
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<link rel="up" title="FatFs" href="../00index_e.html">
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<title>FatFs - f_chmod</title>
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<body>
<div class="para">
<h2>f_chmod</h2>
<p>The f_chmod function changes the attribute of a file or directory.</p>
<pre>
FRESULT f_chmod (
const XCHAR* <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>Parameters</h4>
<dl class="par">
<dt>FileName</dt>
<dd>Pointer to the null-terminated string that specifies a <a href="filename.html">file or directory</a> 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></tr>
<tr><td>AM_RDO</td><td>Read only</td></tr>
<tr><td>AM_ARC</td><td>Archive</td></tr>
<tr><td>AM_SYS</td><td>System</td></tr>
<tr><td>AM_HID</td><td>Hidden</td></tr>
</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 (0)</dt>
<dd>The function succeeded.</dd>
<dt>FR_NO_FILE</dt>
<dd>Could not find the file.</dd>
<dt>FR_NO_PATH</dt>
<dd>Could not find the path.</dd>
<dt>FR_INVALID_NAME</dt>
<dd>The file name is invalid.</dd>
<dt>FR_INVALID_DRIVE</dt>
<dd>The drive number 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 write protected.</dd>
<dt>FR_DISK_ERR</dt>
<dd>The function failed due to an error in the disk function.</dd>
<dt>FR_INT_ERR</dt>
<dd>The function failed due to a wrong FAT structure or an internal error.</dd>
<dt>FR_NOT_ENABLED</dt>
<dd>The logical drive has no work area.</dd>
<dt>FR_NO_FILESYSTEM</dt>
<dd>There is no valid FAT volume on the disk.</dd>
</dl>
</div>
<div class="para">
<h4>Description</h4>
<p>The f_chmod function changes the attribute of a file or directory.</p>
</div>
<div class="para">
<h4>QuickInfo</h4>
<p>Available when <tt>_FS_READONLY == 0</tt> and <tt>_FS_MINIMIZE == 0</tt>.</p>
</div>
<div class="para">
<h4>Example</h4>
<pre>
// Set read-only flag, clear archive flag and others are retained.
f_chmod("file.txt", AR_RDO, AR_RDO | AR_ARC);
</pre>
</div>
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