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diff --git a/man/systemd.journal-fields.xml b/man/systemd.journal-fields.xml deleted file mode 100644 index 7d6c5c715..000000000 --- a/man/systemd.journal-fields.xml +++ /dev/null @@ -1,516 +0,0 @@ -<?xml version='1.0'?> <!--*-nxml-*--> -<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" - "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> - -<!-- - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. ---> - -<refentry id="systemd.journal-fields"> - - <refentryinfo> - <title>systemd.journal-fields</title> - <productname>systemd</productname> - - <authorgroup> - <author> - <contrib>Developer</contrib> - <firstname>Lennart</firstname> - <surname>Poettering</surname> - <email>lennart@poettering.net</email> - </author> - </authorgroup> - </refentryinfo> - - <refmeta> - <refentrytitle>systemd.journal-fields</refentrytitle> - <manvolnum>7</manvolnum> - </refmeta> - - <refnamediv> - <refname>systemd.journal-fields</refname> - <refpurpose>Special journal fields</refpurpose> - </refnamediv> - - <refsect1> - <title>Description</title> - - <para>Entries in the journal resemble an environment block in - their syntax but with fields that can include binary data. - Primarily, fields are formatted UTF-8 text strings, and binary - formatting is used only where formatting as UTF-8 text strings - makes little sense. New fields may freely be defined by - applications, but a few fields have special meaning. All fields - with special meanings are optional. In some cases, fields may - appear more than once per entry.</para> - </refsect1> - - <refsect1> - <title>User Journal Fields</title> - - <para>User fields are fields that are directly passed from clients - and stored in the journal.</para> - - <variablelist class='journal-directives'> - <varlistentry> - <term><varname>MESSAGE=</varname></term> - <listitem> - <para>The human-readable message string for this entry. This - is supposed to be the primary text shown to the user. It is - usually not translated (but might be in some cases), and is - not supposed to be parsed for meta data.</para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>MESSAGE_ID=</varname></term> - <listitem> - <para>A 128-bit message identifier ID for recognizing - certain message types, if this is desirable. This should - contain a 128-bit ID formatted as a lower-case hexadecimal - string, without any separating dashes or suchlike. This is - recommended to be a UUID-compatible ID, but this is not - enforced, and formatted differently. Developers can generate - a new ID for this purpose with <command>journalctl - <option>--new-id</option></command>. - </para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>PRIORITY=</varname></term> - <listitem> - <para>A priority value between 0 (<literal>emerg</literal>) - and 7 (<literal>debug</literal>) formatted as a decimal - string. This field is compatible with syslog's priority - concept.</para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>CODE_FILE=</varname></term> - <term><varname>CODE_LINE=</varname></term> - <term><varname>CODE_FUNC=</varname></term> - <listitem> - <para>The code location generating this message, if known. - Contains the source filename, the line number and the - function name.</para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>ERRNO=</varname></term> - <listitem> - <para>The low-level Unix error number causing this entry, if - any. Contains the numeric value of - <citerefentry project='man-pages'><refentrytitle>errno</refentrytitle><manvolnum>3</manvolnum></citerefentry> - formatted as a decimal string.</para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>SYSLOG_FACILITY=</varname></term> - <term><varname>SYSLOG_IDENTIFIER=</varname></term> - <term><varname>SYSLOG_PID=</varname></term> - <listitem> - <para>Syslog compatibility fields containing the facility - (formatted as decimal string), the identifier string (i.e. - "tag"), and the client PID. (Note that the tag is usually - derived from glibc's - <varname>program_invocation_short_name</varname> variable, - see - <citerefentry project='die-net'><refentrytitle>program_invocation_short_name</refentrytitle><manvolnum>3</manvolnum></citerefentry>.)</para> - </listitem> - - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>Trusted Journal Fields</title> - - <para>Fields prefixed with an underscore are trusted fields, i.e. - fields that are implicitly added by the journal and cannot be - altered by client code.</para> - - <variablelist class='journal-directives'> - <varlistentry> - <term><varname>_PID=</varname></term> - <term><varname>_UID=</varname></term> - <term><varname>_GID=</varname></term> - <listitem> - <para>The process, user, and group ID of the process the - journal entry originates from formatted as a decimal - string.</para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>_COMM=</varname></term> - <term><varname>_EXE=</varname></term> - <term><varname>_CMDLINE=</varname></term> - <listitem> - <para>The name, the executable path, and the command line of - the process the journal entry originates from.</para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>_CAP_EFFECTIVE=</varname></term> - <listitem> - <para>The effective - <citerefentry project='man-pages'><refentrytitle>capabilities</refentrytitle><manvolnum>7</manvolnum></citerefentry> - of the process the journal entry originates from.</para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>_AUDIT_SESSION=</varname></term> - <term><varname>_AUDIT_LOGINUID=</varname></term> - <listitem> - <para>The session and login UID of the process the journal - entry originates from, as maintained by the kernel audit - subsystem.</para> - </listitem> - </varlistentry> - - <varlistentry> - <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> - <term><varname>_SYSTEMD_SLICE=</varname></term> - - <listitem> - <para>The control group path in the systemd hierarchy, the - systemd session ID (if any), the systemd unit name (if any), - the systemd user session unit name (if any), the owner UID - of the systemd session (if any) and the systemd slice unit - of the process the journal entry originates from.</para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>_SELINUX_CONTEXT=</varname></term> - <listitem> - <para>The SELinux security context (label) of the process - the journal entry originates from.</para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>_SOURCE_REALTIME_TIMESTAMP=</varname></term> - <listitem> - <para>The earliest trusted timestamp of the message, if any - is known that is different from the reception time of the - journal. This is the time in microseconds since the epoch - UTC, formatted as a decimal string.</para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>_BOOT_ID=</varname></term> - <listitem> - <para>The kernel boot ID for the boot the message was - generated in, formatted as a 128-bit hexadecimal - string.</para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>_MACHINE_ID=</varname></term> - <listitem> - <para>The machine ID of the originating host, as available - in - <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>_HOSTNAME=</varname></term> - <listitem> - <para>The name of the originating host.</para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>_TRANSPORT=</varname></term> - <listitem> - <para>How the entry was received by the journal service. - Valid transports are: - </para> - <variablelist> - <varlistentry> - <term> - <option>driver</option> - </term> - <listitem> - <para>for internally generated messages - </para> - </listitem> - </varlistentry> - - <varlistentry> - <term> - <option>syslog</option> - </term> - <listitem> - <para>for those received via the local syslog socket - with the syslog protocol - </para> - </listitem> - </varlistentry> - - <varlistentry> - <term> - <option>journal</option> - </term> - <listitem> - <para>for those received via the native journal - protocol - </para> - </listitem> - </varlistentry> - - <varlistentry> - <term> - <option>stdout</option> - </term> - <listitem> - <para>for those read from a service's standard output - or error output - </para> - </listitem> - </varlistentry> - - <varlistentry> - <term> - <option>kernel</option> - </term> - <listitem> - <para>for those read from the kernel - </para> - </listitem> - </varlistentry> - </variablelist> - </listitem> - </varlistentry> - </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 class='journal-directives'> - <varlistentry> - <term><varname>_KERNEL_DEVICE=</varname></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 <literal>:</literal> and prefixed by - <literal>b</literal>. Similar for character devices but - prefixed by <literal>c</literal>. For network devices, this - is the interface index prefixed by <literal>n</literal>. For - all other devices, this is the subsystem name prefixed by - <literal>+</literal>, followed by <literal>:</literal>, - followed by the kernel device name.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>_KERNEL_SUBSYSTEM=</varname></term> - <listitem> - <para>The kernel subsystem name.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>_UDEV_SYSNAME=</varname></term> - <listitem> - <para>The kernel device name as it shows up in the device - tree below <filename>/sys</filename>.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>_UDEV_DEVNODE=</varname></term> - <listitem> - <para>The device node path of this device in - <filename>/dev</filename>.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>_UDEV_DEVLINK=</varname></term> - <listitem> - <para>Additional symlink names pointing to the device node - in <filename>/dev</filename>. This field is frequently set - more than once per entry.</para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>Fields to log on behalf of a different program</title> - - <para>Fields in this section are used by programs to specify that - they are logging on behalf of another program or unit. - </para> - - <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>coredumpctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>. - </para> - </listitem> - </varlistentry> - </variablelist> - - <para>Priviledged programs (currently UID 0) may attach - <varname>OBJECT_PID=</varname> to a message. This will instruct - <command>systemd-journald</command> to attach additional fields on - behalf of the caller:</para> - - <variablelist class='journal-directives'> - <varlistentry> - <term><varname>OBJECT_PID=<replaceable>PID</replaceable></varname></term> - <listitem> - <para>PID of the program that this message pertains to. - </para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>OBJECT_UID=</varname></term> - <term><varname>OBJECT_GID=</varname></term> - <term><varname>OBJECT_COMM=</varname></term> - <term><varname>OBJECT_EXE=</varname></term> - <term><varname>OBJECT_CMDLINE=</varname></term> - <term><varname>OBJECT_AUDIT_SESSION=</varname></term> - <term><varname>OBJECT_AUDIT_LOGINUID=</varname></term> - <term><varname>OBJECT_SYSTEMD_CGROUP=</varname></term> - <term><varname>OBJECT_SYSTEMD_SESSION=</varname></term> - <term><varname>OBJECT_SYSTEMD_OWNER_UID=</varname></term> - <term><varname>OBJECT_SYSTEMD_UNIT=</varname></term> - <term><varname>OBJECT_SYSTEMD_USER_UNIT=</varname></term> - <listitem> - <para>These are additional fields added automatically by - <command>systemd-journald</command>. Their meaning is the - same as - <varname>_UID=</varname>, - <varname>_GID=</varname>, - <varname>_COMM=</varname>, - <varname>_EXE=</varname>, - <varname>_CMDLINE=</varname>, - <varname>_AUDIT_SESSION=</varname>, - <varname>_AUDIT_LOGINUID=</varname>, - <varname>_SYSTEMD_CGROUP=</varname>, - <varname>_SYSTEMD_SESSION=</varname>, - <varname>_SYSTEMD_UNIT=</varname>, - <varname>_SYSTEMD_USER_UNIT=</varname>, and - <varname>_SYSTEMD_OWNER_UID=</varname> - as described above, except that the process identified by - <replaceable>PID</replaceable> is described, instead of the - process which logged the message.</para> - </listitem> - </varlistentry> - </variablelist> - - - </refsect1> - - <refsect1> - <title>Address Fields</title> - - <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 are not proper fields when stored in the journal but for - addressing metadata 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> - - <variablelist class='journal-directives'> - <varlistentry> - <term><varname>__CURSOR=</varname></term> - <listitem> - <para>The cursor for the entry. A cursor is an opaque text - string that uniquely describes the position of an entry in - the journal and is portable across machines, platforms and - journal files. - </para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>__REALTIME_TIMESTAMP=</varname></term> - <listitem> - <para>The wallclock time - (<constant>CLOCK_REALTIME</constant>) at the point in time - the entry was received by the journal, in microseconds since - the epoch UTC, formatted as a decimal string. This has - different properties from - <literal>_SOURCE_REALTIME_TIMESTAMP=</literal>, as it is - usually a bit later but more likely to be monotonic. - </para> - </listitem> - </varlistentry> - - <varlistentry> - <term><varname>__MONOTONIC_TIMESTAMP=</varname></term> - <listitem> - <para>The monotonic time - (<constant>CLOCK_MONOTONIC</constant>) at the point in time - the entry was received by the journal in microseconds, - formatted as a decimal string. To be useful as an address - for the entry, this should be combined with the boot ID in - <literal>_BOOT_ID=</literal>. - </para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>See Also</title> - <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>coredumpctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>, - <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry> - </para> - </refsect1> - -</refentry> |