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88 lines
2.5 KiB
HTML
88 lines
2.5 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<html lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<meta http-equiv="Content-Style-Type" content="text/css">
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<link rel="up" title="FatFs" href="../00index_e.html">
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<link rel="stylesheet" href="../css_e.css" type="text/css" media="screen" title="ELM Default">
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<title>FatFs - f_chdir</title>
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</head>
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<body>
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<div class="para">
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<h2>f_chdir</h2>
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<p>The f_chdir function changes the current directory of a drive.</p>
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<pre>
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FRESULT f_chdir (
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const XCHAR* <em>Path</em> /* Pointer to the path name */
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);
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</pre>
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</div>
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<div class="para">
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<h4>Parameters</h4>
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<dl class="par">
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<dt>Path</dt>
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<dd>Pointer to the null-terminated string that specifies a <a href="filename.html">directory</a> to go.</dd>
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</dl>
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</div>
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<div class="para">
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<h4>Return Values</h4>
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<dl class="ret">
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<dt>FR_OK (0)</dt>
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<dd>The function succeeded.</dd>
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<dt>FR_NO_PATH</dt>
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<dd>Could not find the path.</dd>
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<dt>FR_INVALID_NAME</dt>
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<dd>The path name is invalid.</dd>
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<dt>FR_INVALID_DRIVE</dt>
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<dd>The drive number is invalid.</dd>
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<dt>FR_NOT_READY</dt>
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<dd>The disk drive cannot work due to no medium in the drive or any other reason.</dd>
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<dt>FR_DISK_ERR</dt>
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<dd>The function failed due to an error in the disk function.</dd>
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<dt>FR_INT_ERR</dt>
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<dd>The function failed due to a wrong FAT structure or an internal error.</dd>
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<dt>FR_NOT_ENABLED</dt>
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<dd>The logical drive has no work area.</dd>
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<dt>FR_NO_FILESYSTEM</dt>
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<dd>There is no valid FAT volume on the disk.</dd>
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</dl>
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</div>
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<div class="para">
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<h4>Description</h4>
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<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>
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</div>
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<div class="para">
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<h4>QuickInfo</h4>
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<p>Available when <tt>_FS_RPATH == 1</tt>.</p>
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</div>
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<div class="para">
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<h4>Example</h4>
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<pre>
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// Change current direcoty of the current drive (dir1 under root dir)
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f_chdir("/dir1");
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// Change current direcoty of drive 2 (parent dir)
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f_chdir("2:..");
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</pre>
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</div>
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<div class="para">
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<h4>See Also</h4>
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<p><tt><a href="chdrive.html">f_chdrive</a></tt></p>
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</div>
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<p class="foot"><a href="../00index_e.html">Return</a></p>
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</body>
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</html>
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