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<?xml version="1.0" encoding="UTF-8"?>
<refentry id="scupdatedir">
<refentryinfo><title>OpenSC API Reference</title></refentryinfo>
<refmeta>
<refentrytitle>sc_update_dir</refentrytitle>
<manvolnum>3</manvolnum>
<refmiscinfo>opensc</refmiscinfo>
</refmeta>
<refnamediv>
<refname>sc_update_dir</refname>
<refpurpose>Update application directory on a card</refpurpose>
</refnamediv>
<refsect1>
<title>Synopsis</title>
<para>
<programlisting>
#include <opensc.h>
int sc_update_dir(sc_card_t *card, sc_app_info_t *app);
</programlisting>
</para>
</refsect1>
<refsect1>
<title>Description</title>
<para>
This function updates the application directory on <emphasis>card</emphasis>.
If the card has a record-structured directory file, <emphasis>app</emphasis>
may contain the application to update. Otherwise, the entire directory file
is updated.
</para>
<para>
Before calling this function, you MUST call <link
linkend="scenumapps">sc_enum_apps()</link> first.
</para>
</refsect1>
<refsect1>
<title>Return value</title>
<para>
Returns 0 if successful, or a negative value in case of error.
</para>
</refsect1>
</refentry>
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