chiark / gitweb /
man: add man page aliases for all macros/types too
[elogind.git] / man / sd_journal_open.xml
index 12b8055..ffd9a2c 100644 (file)
                 <refname>sd_journal_open</refname>
                 <refname>sd_journal_open_directory</refname>
                 <refname>sd_journal_close</refname>
+                <refname>sd_journal</refname>
+                <refname>SD_JOURNAL_LOCAL_ONLY</refname>
+                <refname>SD_JOURNAL_RUNTIME_ONLY</refname>
+                <refname>SD_JOURNAL_SYSTEM_ONLY</refname>
                 <refpurpose>Open the system journal for reading</refpurpose>
         </refnamediv>
 
@@ -81,7 +85,7 @@
                 files automatically and interleave them automatically
                 when reading. As first argument it takes a pointer to
                 a <literal>sd_journal</literal> pointer, which on
-                success will contain journal context afterwards. The
+                success will contain journal context object afterwards. The
                 second argument is a flags field, which may consist of
                 the following flags ORed together:
                 <literal>SD_JOURNAL_LOCAL_ONLY</literal> makes sure
                 for an example how to iterate through the journal
                 after opening it it with
                 <function>sd_journal_open()</function>.</para>
+
+                <para>A journal context object returned by
+                <function>sd_journal_open()</function> references a
+                specific journal entry as <emphasis>current</emphasis> entry,
+                similar to a file seek index in a classic file system
+                file, but without absolute positions. It may be
+                altered with
+                <citerefentry><refentrytitle>sd_journal_next</refentrytitle><manvolnum>3</manvolnum></citerefentry>
+                and
+                <citerefentry><refentrytitle>sd_journal_seek_head</refentrytitle><manvolnum>3</manvolnum></citerefentry>
+                and related calls. The current entry position may be
+                exported in <emphasis>cursor</emphasis> strings, as accessible
+                via
+                <citerefentry><refentrytitle>sd_journal_get_cursor</refentrytitle><manvolnum>3</manvolnum></citerefentry>. Cursor
+                strings may be used to globally identify a specific
+                journal entry in a stable way and then later to seek
+                to it (or if the specific entry is not available
+                locally, to its closest entry in time)
+                <citerefentry><refentrytitle>sd_journal_seek_cursor</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para>
+
+                <para>Notification of journal changes is available via
+                <function>sd_journal_get_fd()</function> and related
+                calls.</para>
         </refsect1>
 
         <refsect1>