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mirror of https://github.com/systemd/systemd.git synced 2024-12-22 17:35:35 +03:00

journal: document new catalog APIs

This commit is contained in:
Lennart Poettering 2012-11-20 22:09:09 +01:00
parent 8f1e860f8a
commit f2cf0403c9
3 changed files with 144 additions and 3 deletions

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@ -535,7 +535,8 @@ MANPAGES = \
man/sd_journal_get_usage.3 \
man/sd_journal_add_match.3 \
man/sd_journal_seek_head.3 \
man/sd_journal_query_unique.3
man/sd_journal_query_unique.3 \
man/sd_journal_get_catalog.3
MANPAGES_ALIAS = \
man/reboot.8 \
@ -610,7 +611,8 @@ MANPAGES_ALIAS = \
man/sd_journal_test_cursor.3 \
man/sd_journal_enumerate_unique.3 \
man/sd_journal_restart_unique.3 \
man/SD_JOURNAL_FOREACH_UNIQUE.3
man/SD_JOURNAL_FOREACH_UNIQUE.3 \
man/sd_journal_get_catalog_for_message_id.3
if HAVE_KMOD
MANPAGES += \
@ -694,6 +696,7 @@ man/sd_journal_test_cursor.3: man/sd_journal_get_cursor.3
man/sd_journal_enumerate_unique.3: man/sd_journal_query_unique.3
man/sd_journal_restart_unique.3: man/sd_journal_query_unique.3
man/SD_JOURNAL_FOREACH_UNIQUE.3: man/sd_journal_query_unique.3
man/sd_journal_get_catalog_for_message_id.3: man/sd_journal_get_catalog.3
XML_FILES = \
${patsubst %.1,%.xml,${patsubst %.3,%.xml,${patsubst %.5,%.xml,${patsubst %.7,%.xml,${patsubst %.8,%.xml,$(MANPAGES)}}}}}

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@ -79,7 +79,8 @@
<citerefentry><refentrytitle>sd_journal_seek_head</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_journal_get_cursor</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_journal_cutoff_realtime_usec</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_journal_get_usage</refentrytitle><manvolnum>3</manvolnum></citerefentry>
<citerefentry><refentrytitle>sd_journal_get_usage</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_journal_get_catalog</refentrytitle><manvolnum>3</manvolnum></citerefentry>
and
<citerefentry><refentrytitle>sd_journal_get_fd</refentrytitle><manvolnum>3</manvolnum></citerefentry>
for more information about the functions
@ -121,6 +122,7 @@
<citerefentry><refentrytitle>sd_journal_get_usage</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_journal_get_fd</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_journal_query_unique</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_journal_get_catalog</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd-id128</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>

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@ -0,0 +1,136 @@
<?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 2012 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="sd_journal_get_catalog">
<refentryinfo>
<title>sd_journal_get_catalog</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>sd_journal_get_catalog</refentrytitle>
<manvolnum>3</manvolnum>
</refmeta>
<refnamediv>
<refname>sd_journal_get_catalog</refname>
<refname>sd_journal_get_catalog_for_message_id</refname>
<refpurpose>Retrieve message catalog entry</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis>
<funcsynopsisinfo>#include &lt;systemd/sd-journal.h&gt;</funcsynopsisinfo>
<funcprototype>
<funcdef>int <function>sd_journal_get_catalog</function></funcdef>
<paramdef>sd_journal* <parameter>j</parameter></paramdef>
<paramdef>const char** <parameter>ret</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>int <function>sd_journal_get_catalog_for_message_id</function></funcdef>
<paramdef>sd_id128_t <parameter>id</parameter></paramdef>
<paramdef>const char** <parameter>ret</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><function>sd_journal_get_catalog()</function>
retrieves a message catalog entry for the current
journal entry. This will look up an entry in the
message catalog by using the
<literal>MESSAGE_ID=</literal> field of the current
journal entry. Before returning the entry all journal
field names in the catalog entry text enclosed in "@"
will be replaced by the respective field values of the
current entry. If a field name referenced in the
message catalog entry does not exist it the current
journal entry the "@" will be removed but the field
name otherwise left untouched.</para>
<para><function>sd_journal_get_catalog_for_message_id()</function>
works similar to
<function>sd_journal_get_catalog()</function> but the
entry is looked up by the specified message ID (no
open journal context is necessary for this), and no
field substitution is done.</para>
<para>For more information about the journal message
catalog please refer to the <ulink
url="http://www.freedesktop.org/wiki/Software/systemd/catalog">Journal
Message Catalogs</ulink> documentation page.</para>
</refsect1>
<refsect1>
<title>Return Value</title>
<para><function>sd_journal_get_catalog()</function>
and
<function>sd_journal_get_catalog_for_message_id()</function>
returns 0 on success or a negative errno-style error
code. If no matching message catalog entry is found
-ENOENT is returned.</para>
</refsect1>
<refsect1>
<title>Notes</title>
<para>The <function>sd_journal_get_catalog()</function> and
<function>sd_journal_get_catalog_for_message_id()</function>
interfaces are available as shared library, which can
be compiled and linked to with the
<literal>libsystemd-journal</literal>
<citerefentry><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>
file.</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.journal-fields</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd-journal</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_journal_open</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_journal_next</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_journal_get_data</refentrytitle><manvolnum>3</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>