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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [Common/] [FileSystem/] [FatFs-0.7e/] [doc/] [en/] [chdir.html] - Rev 654
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<title>FatFs - f_chdir</title>
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<div class="para">
<h2>f_chdir</h2>
<p>The f_chdir function changes the current directory of a drive.</p>
<pre>
FRESULT f_chdir (
const XCHAR* <em>Path</em> /* Pointer to the path name */
);
</pre>
</div>
<div class="para">
<h4>Parameters</h4>
<dl class="par">
<dt>Path</dt>
<dd>Pointer to the null-terminated string that specifies a <a href="filename.html">directory</a> to go.</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_PATH</dt>
<dd>Could not find the path.</dd>
<dt>FR_INVALID_NAME</dt>
<dd>The path 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_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_chdir function changes the current directory of the logical drive. The current directory of a drive is initialized to the root directory when the drive is auto-mounted. Note that the current directory is retained in the each file system object so that it also affects other tasks that using the drive.</p>
</div>
<div class="para">
<h4>QuickInfo</h4>
<p>Available when <tt>_FS_RPATH == 1</tt>.</p>
</div>
<div class="para">
<h4>Example</h4>
<pre>
// Change current direcoty of the current drive (dir1 under root dir)
f_chdir("/dir1");
// Change current direcoty of drive 2 (parent dir)
f_chdir("2:..");
</pre>
</div>
<div class="para">
<h4>See Also</h4>
<p><tt><a href="chdrive.html">f_chdrive</a></tt></p>
</div>
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