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<title>FatFs - f_getlabel</title>
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<div class="para func">
<h2>f_getlabel</h2>
<p>The f_getlabel function returns volume label and volume serial number of a volume.</p>
<pre>
FRESULT f_getlabel (
const TCHAR* <span class="arg">path</span>, <span class="c">/* [IN] Drive number */</span>
TCHAR* <span class="arg">label</span>, <span class="c">/* [OUT] Volume label */</span>
DWORD* <span class="arg">vsn</span> <span class="c">/* [OUT] Volume serial number */</span>
);
</pre>
</div>
<div class="para arg">
<h4>Parameters</h4>
<dl class="par">
<dt>path</dt>
<dd>Pointer to the null-terminated string that specifies the <a href="filename.html">logical drive</a>. Null-string specifies the default drive. If a null pointer is given, the function fails with <tt>FR_INVALID_DRIVE</tt>.</dd>
<dt>label</dt>
<dd>Pointer to the buffer to store the volume label. If the volume has no label, a null-string will be returned. Set null pointer if this information is not needed. The buffer size should be shown below at least to avoid buffer overflow.<br>
<table class="lst2">
<tr><td>Configuration</td><td>FF_FS_EXFAT == 0</td><td>FF_FS_EXFAT == 1</td></tr>
<tr><td>FF_USE_LFN == 0</td><td>12 items</td><td>-</td></tr>
<tr><td>FF_LFN_UNICODE == 0</td><td>12 items</td><td>23 items</td></tr>
<tr><td>FF_LFN_UNICODE == 1,3</td><td>12 items</td><td>12 items</td></tr>
<tr><td>FF_LFN_UNICODE == 2</td><td>34 items</td><td>34 items</td></tr>
</table>
</dd>
<dt>vsn</dt>
<dd>Pointer to the <tt>DWORD</tt> variable to store the volume serial number. Set null pointer if this information is not needed.</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#nr">FR_NOT_READY</a>,
<a href="rc.html#id">FR_INVALID_DRIVE</a>,
<a href="rc.html#ne">FR_NOT_ENABLED</a>,
<a href="rc.html#ns">FR_NO_FILESYSTEM</a>,
<a href="rc.html#tm">FR_TIMEOUT</a>
</p>
</div>
<div class="para comp">
<h4>QuickInfo</h4>
<p>Available when <tt><a href="config.html#use_label">FF_USE_LABEL</a> == 1</tt>.</p>
</div>
<div class="para use">
<h4>Example</h4>
<pre>
char str[12];
<span class="c">/* Get volume label of the default drive */</span>
<em>f_getlabel</em>("", str, 0);
<span class="c">/* Get volume label of the drive 2 */</span>
<em>f_getlabel</em>("2:", str, 0);
</pre>
</div>
<div class="para ref">
<h4>See Also</h4>
<tt><a href="setlabel.html">f_setlabel</a></tt>
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<p class="foot"><a href="../00index_e.html">Return</a></p>
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