<term><varname>_SYSTEMD_CGROUP=</varname></term>
<term><varname>_SYSTEMD_SESSION=</varname></term>
<term><varname>_SYSTEMD_UNIT=</varname></term>
+ <term><varname>_SYSTEMD_USER_UNIT=</varname></term>
<term><varname>_SYSTEMD_OWNER_UID=</varname></term>
<listitem>
- <para>The contol group path in
+ <para>The control group path in
the systemd hierarchy, the
systemd session ID (if any),
- the systemd unit name (if any)
+ the systemd unit name (if any),
+ the systemd user session unit name (if any)
and the owner UID of the
systemd session (if any) of
the process the journal entry
journal protocol, for the
those read from a services'
standard output or error
- output, and for those read
- from the kernel, resp.
+ output, or for those read
+ from the kernel, respectively.
</para>
</listitem>
</varlistentry>
messages originating in the kernel and stored in the
journal.</para>
- <variablelist>
+ <variablelist class='journal-directives'>
<varlistentry>
- <term>_KERNEL_DEVICE=</term>
+ <term><varname>_KERNEL_DEVICE=</varname></term>
<listitem>
<para>The kernel device
name. If the entry is
</listitem>
</varlistentry>
<varlistentry>
- <term>_KERNEL_SUBSYSTEM=</term>
+ <term><varname>_KERNEL_SUBSYSTEM=</varname></term>
<listitem>
<para>The kernel subsystem name.</para>
</listitem>
</varlistentry>
<varlistentry>
- <term>_UDEV_SYSNAME=</term>
+ <term><varname>_UDEV_SYSNAME=</varname></term>
<listitem>
<para>The kernel device name
as it shows up in the device
</listitem>
</varlistentry>
<varlistentry>
- <term>_UDEV_DEVNODE=</term>
+ <term><varname>_UDEV_DEVNODE=</varname></term>
<listitem>
<para>The device node path of
this device in
</listitem>
</varlistentry>
<varlistentry>
- <term>_UDEV_DEVLINK=</term>
+ <term><varname>_UDEV_DEVLINK=</varname></term>
<listitem>
<para>Additional symlink names
pointing to the device node in
</variablelist>
</refsect1>
+ <refsect1>
+ <title>Special Journal Fields</title>
+
+ <para>Fields used by the <command>systemd-coredump</command>
+ coredump kernel helper.
+ </para>
+
+ <variablelist class='journal-directives'>
+ <varlistentry>
+ <term><varname>COREDUMP_UNIT=</varname></term>
+ <term><varname>COREDUMP_USER_UNIT=</varname></term>
+ <listitem>
+ <para>Used to annotate
+ messages containing coredumps from
+ system and session units.
+ See
+ <citerefentry><refentrytitle>systemd-coredumpctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
<refsect1>
<title>Address Fields</title>
- <para>During serialization into external formats the
- addresses of journal entries are serialized into
- fields prefixed with double underscores. Note that
- these aren't proper fields when stored in the journal,
- but addressing meta data of entries. They cannot be
- written as part of structured log entries via calls
- such as
+ <para>During serialization into external formats, such
+ as the <ulink
+ url="http://www.freedesktop.org/wiki/Software/systemd/export">Journal
+ Export Format</ulink> or the <ulink
+ url="http://www.freedesktop.org/wiki/Software/systemd/json">Journal
+ JSON Format</ulink>, the addresses of journal entries
+ are serialized into fields prefixed with double
+ underscores. Note that these aren't proper fields when
+ stored in the journal, but addressing meta data of
+ entries. They cannot be written as part of structured
+ log entries via calls such as
<citerefentry><refentrytitle>sd_journal_send</refentrytitle><manvolnum>3</manvolnum></citerefentry>. They
may also not be used as matches for
<citerefentry><refentrytitle>sd_journal_add_match</refentrytitle><manvolnum>3</manvolnum></citerefentry></para>
<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>3</manvolnum></citerefentry>
+ <citerefentry><refentrytitle>sd-journal</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-coredumpctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>
</para>
</refsect1>