56 lines
1.7 KiB
XML
56 lines
1.7 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<refentry id="scselectfile">
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<refentryinfo><title>OpenSC API Reference</title></refentryinfo>
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<refmeta>
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<refentrytitle>sc_select_file</refentrytitle>
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<manvolnum>3</manvolnum>
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<refmiscinfo>opensc</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>sc_select_file</refname>
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<refpurpose>Select a file on a smart card</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Synopsis</title>
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<para>
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<programlisting>
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#include <opensc.h>
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int sc_select_file(<link linkend="sccardt">sc_card_t</link> *card,
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const <link linkend="scpatht">sc_path_t</link> *path,
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<link linkend="scfilet">sc_file_t</link> **result);
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</programlisting>
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</para>
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</refsect1>
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<refsect1>
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<title>Description</title>
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<para>
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This function selects the file specified by <emphasis>path</emphasis>. If
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<emphasis>path</emphasis> specifies a file within the currently selected DF, sc_select_file() will
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<emphasis>not</emphasis> select the MF first, but interpret the path relative to the current DF.
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It does this in order to prevent losing any authorizations previously established with the card
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(e.g. by presenting a PIN).
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</para>
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<para>
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If <emphasis>result</emphasis> is not NULL, an <link linkend="scfilet">sc_file_t</link> object is
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created, and the pointer to this object is stored in the location pointed to by
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<emphasis>result</emphasis>. This handle should later be released using <link
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linkend="scfilefree">sc_file_free()</link>.
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</para>
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</refsect1>
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<refsect1>
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<title>Return value</title>
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<para>
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If an error occurred, a negative error code is returned. Otherwise, the function will return 0.
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</para>
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</refsect1>
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</refentry>
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