man/sd_journal_get_catalog.xml

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  23
  24 <refentry id="sd_journal_get_catalog">
  25
  26   <refentryinfo>
  27     <title>sd_journal_get_catalog</title>
  28     <productname>systemd</productname>
  29
  30     <authorgroup>
  31       <author>
  32         <contrib>Developer</contrib>
  33         <firstname>Lennart</firstname>
  34         <surname>Poettering</surname>
  35         <email>lennart@poettering.net</email>
  36       </author>
  37     </authorgroup>
  38   </refentryinfo>
  39
  40   <refmeta>
  41     <refentrytitle>sd_journal_get_catalog</refentrytitle>
  42     <manvolnum>3</manvolnum>
  43   </refmeta>
  44
  45   <refnamediv>
  46     <refname>sd_journal_get_catalog</refname>
  47     <refname>sd_journal_get_catalog_for_message_id</refname>
  48     <refpurpose>Retrieve message catalog entry</refpurpose>
  49   </refnamediv>
  50
  51   <refsynopsisdiv>
  52     <funcsynopsis>
  53       <funcsynopsisinfo>#include &lt;systemd/sd-journal.h&gt;</funcsynopsisinfo>
  54
  55       <funcprototype>
  56         <funcdef>int <function>sd_journal_get_catalog</function></funcdef>
  57         <paramdef>sd_journal *<parameter>j</parameter></paramdef>
  58         <paramdef>char **<parameter>ret</parameter></paramdef>
  59       </funcprototype>
  60
  61       <funcprototype>
  62         <funcdef>int <function>sd_journal_get_catalog_for_message_id</function></funcdef>
  63         <paramdef>sd_id128_t <parameter>id</parameter></paramdef>
  64         <paramdef>char **<parameter>ret</parameter></paramdef>
  65       </funcprototype>
  66
  67
  68     </funcsynopsis>
  69   </refsynopsisdiv>
  70
  71   <refsect1>
  72     <title>Description</title>
  73
  74     <para><function>sd_journal_get_catalog()</function> retrieves a
  75     message catalog entry for the current journal entry. This will
  76     look up an entry in the message catalog by using the
  77     <literal>MESSAGE_ID=</literal> field of the current journal entry.
  78     Before returning the entry all journal field names in the catalog
  79     entry text enclosed in "@" will be replaced by the respective
  80     field values of the current entry. If a field name referenced in
  81     the message catalog entry does not exist, in the current journal
  82     entry, the "@" will be removed, but the field name otherwise left
  83     untouched.</para>
  84
  85     <para><function>sd_journal_get_catalog_for_message_id()</function>
  86     works similar to <function>sd_journal_get_catalog()</function> but
  87     the entry is looked up by the specified message ID (no open
  88     journal context is necessary for this), and no field substitution
  89     is performed.</para>
  90
  91     <para>For more information about the journal message catalog
  92     please refer to the <ulink
  93     url="http://www.freedesktop.org/wiki/Software/systemd/catalog">Journal
  94     Message Catalogs</ulink> documentation page.</para>
  95   </refsect1>
  96
  97   <refsect1>
  98     <title>Return Value</title>
  99
 100     <para><function>sd_journal_get_catalog()</function> and
 101     <function>sd_journal_get_catalog_for_message_id()</function>
 102     return 0 on success or a negative errno-style error code. If no
 103     matching message catalog entry is found, -ENOENT is
 104     returned.</para>
 105
 106     <para>On successful return, <parameter>ret</parameter> points to a
 107     new string, which must be freed with
 108     <citerefentry project='man-pages'><refentrytitle>free</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
 109     </para>
 110   </refsect1>
 111
 112   <refsect1>
 113     <title>Notes</title>
 114
 115     <para>The <function>sd_journal_get_catalog()</function> and
 116     <function>sd_journal_get_catalog_for_message_id()</function>
 117     interfaces are available as a shared library, which can be
 118     compiled and linked to with the
 119     <constant>libsystemd</constant> <citerefentry project='die-net'><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>
 120     file.</para>
 121   </refsect1>
 122
 123   <refsect1>
 124     <title>See Also</title>
 125
 126     <para>
 127       <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 128       <citerefentry><refentrytitle>systemd.journal-fields</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
 129       <citerefentry><refentrytitle>sd-journal</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 130       <citerefentry><refentrytitle>sd_journal_open</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 131       <citerefentry><refentrytitle>sd_journal_next</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 132       <citerefentry><refentrytitle>sd_journal_get_data</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 133       <citerefentry project='man-pages'><refentrytitle>malloc</refentrytitle><manvolnum>3</manvolnum></citerefentry>
 134     </para>
 135   </refsect1>
 136
 137 </refentry>