</listitem>
</varlistentry>
+ <varlistentry>
+ <term>ERRNO=</term>
+ <listitem>
+ <para>The low-level Unix error
+ number causing this entry, if
+ any. Contains the numeric
+ value of
+ <citerefentry><refentrytitle>errno</refentrytitle><manvolnum>3</manvolnum></citerefentry>
+ formatted as decimal
+ string.</para>
+ </listitem>
+ </varlistentry>
+
<varlistentry>
<term>SYSLOG_FACILITY=</term>
<term>SYSLOG_IDENTIFIER=</term>
</variablelist>
</refsect1>
+ <refsect1>
+ <title>Kernel Journal Fields</title>
+
+ <para>Kernel fields are fields that are used by
+ messages originating in the kernel and stored in the
+ journal.</para>
+
+ <variablelist>
+ <varlistentry>
+ <term>_KERNEL_DEVICE=</term>
+ <listitem>
+ <para>The kernel device
+ name. If the entry is
+ associated to a block device,
+ the major and minor of the
+ device node, separated by ':'
+ and prefixed by 'b'. Similar
+ for character devices, but
+ prefixed by 'c'. For network
+ devices the interface index,
+ prefixed by 'n'. For all other
+ devices '+' followed by the
+ subsystem name, followed by
+ ':', followed by the kernel
+ device name.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>_KERNEL_SUBSYSTEM=</term>
+ <listitem>
+ <para>The kernel subsystem name.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
<refsect1>
<title>Address Fields</title>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>sd-journal</refentrytitle><manvolnum>7</manvolnum></citerefentry>
+ <citerefentry><refentrytitle>sd-journal</refentrytitle><manvolnum>3</manvolnum></citerefentry>
</para>
</refsect1>