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86 lines
2.6 KiB
XML
86 lines
2.6 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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SPDX-License-Identifier: LGPL-2.1-or-later
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-->
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<refentry id="sd_journal_has_runtime_files" xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>sd_journal_has_runtime_files</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>sd_journal_has_runtime_files</refentrytitle>
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<manvolnum>3</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>sd_journal_has_runtime_files</refname>
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<refname>sd_journal_has_persistent_files</refname>
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<refpurpose>Query availability of runtime or persistent journal files</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<funcsynopsis>
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<funcsynopsisinfo>#include <systemd/sd-journal.h></funcsynopsisinfo>
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<funcprototype>
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<funcdef>int <function>sd_journal_has_runtime_files</function></funcdef>
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<paramdef>sd_journal *<parameter>j</parameter></paramdef>
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</funcprototype>
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<funcprototype>
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<funcdef>int <function>sd_journal_has_persistent_files</function></funcdef>
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<paramdef>sd_journal *<parameter>j</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><function>sd_journal_has_runtime_files()</function> returns a positive value
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if runtime journal files (present in /run/systemd/journal/) have been found.
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Otherwise returns 0.</para>
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<para><function>sd_journal_has_persistent_files()</function> returns a positive value
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if persistent journal files (present in /var/log/journal/) have been found.
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Otherwise returns 0.</para>
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</refsect1>
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<refsect1>
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<title>Return value</title>
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<para>Both <function>sd_journal_has_runtime_files()</function>
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and <function>sd_journal_has_persistent_files()</function> return -EINVAL
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if their argument is <constant>NULL</constant>.
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</para>
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</refsect1>
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<refsect1>
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<title>Notes</title>
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<xi:include href="threads-aware.xml" xpointer="strict"/>
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<xi:include href="libsystemd-pkgconfig.xml" xpointer="pkgconfig-text"/>
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</refsect1>
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<refsect1>
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<title>History</title>
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<para><function>sd_journal_has_runtime_files()</function> and
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<function>sd_journal_has_persistent_files()</function> were added in version 229.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>sd-journal</refentrytitle><manvolnum>3</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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