removed sc_wait_for_event()
git-svn-id: https://www.opensc-project.org/svnp/opensc/trunk@2218 c6295689-39f2-0310-b995-f0e70906c6a9
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<?xml version="1.0" encoding="UTF-8"?>
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<refentry id="scwaitforevent">
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<refentryinfo><title>OpenSC API Reference</title></refentryinfo>
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<refmeta>
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<refentrytitle>sc_wait_for_event</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_wait_for_event</refname>
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<refpurpose>Wait for an event on a smartcard reader</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_wait_for_event(sc_reader_t *readers[], int slots[], size_t numslots,
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unsigned int event_mask,
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int *reader, unsigned int *event, int timeout);
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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 blocks until an event occurs on any of the
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readers/slots specified. The <emphasis>readers</emphasis> and
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<emphasis>slots</emphasis> fields list the readers and the
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respective slots to be watched. <emphasis>num_slots</emphasis>
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holds the total number of slots passed. The <emphasis>event_mask</emphasis>
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parameter specifies the types of events to wait for. This may a
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combination of the following flags:
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<variablelist>
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<varlistentry>
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<term><symbol>SC_EVENT_CARD_REMOVED</symbol></term>
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<listitem><para>A card was removed from the reader/slot.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><symbol>SC_EVENT_CARD_INSERTED</symbol></term>
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<listitem><para>A card was insert into the reader/slot.</para></listitem>
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</varlistentry>
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</variablelist>
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</para>
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<para>
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On returning, the <emphasis>reader</emphasis> parameter holds the
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reader which generated an event, and <emphasis>event</emphasis> holds
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the event flag, as in <emphasis>event_mask</emphasis>.
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</para>
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<para>
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The timeout parameter may be used to specify the maximum amount of
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time to wait for an event, in milliseconds. This may be set to -1
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to wait forever.
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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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Returns 0 if successful, 1 if a timeout occurred, or a negative
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value in case of error.
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</para>
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</refsect1>
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</refentry>
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