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diff --git a/man/sd_journal_add_match.html b/man/sd_journal_add_match.html deleted file mode 100644 index 541caee6e6..0000000000 --- a/man/sd_journal_add_match.html +++ /dev/null @@ -1,108 +0,0 @@ -<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>sd_journal_add_match</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><style> - a.headerlink { - color: #c60f0f; - font-size: 0.8em; - padding: 0 4px 0 4px; - text-decoration: none; - visibility: hidden; - } - - a.headerlink:hover { - background-color: #c60f0f; - color: white; - } - - h1:hover > a.headerlink, h2:hover > a.headerlink, h3:hover > a.headerlink, dt:hover > a.headerlink { - visibility: visible; - } - </style><a href="index.html">Index </a>· - <a href="systemd.directives.html">Directives </a>· - <a href="../python-systemd/index.html">Python </a>· - - <span style="float:right">systemd 221</span><hr><div class="refentry"><a name="sd_journal_add_match"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>sd_journal_add_match, sd_journal_add_disjunction, sd_journal_add_conjunction, sd_journal_flush_matches — Add or remove entry matches</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><pre class="funcsynopsisinfo">#include <systemd/sd-journal.h></pre><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">sd_journal_add_match</b>(</code></td><td>sd_journal *<var class="pdparam">j</var>, </td></tr><tr><td> </td><td>const void *<var class="pdparam">data</var>, </td></tr><tr><td> </td><td>size_t <var class="pdparam">size</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">sd_journal_add_disjunction</b>(</code></td><td>sd_journal *<var class="pdparam">j</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">sd_journal_add_conjunction</b>(</code></td><td>sd_journal *<var class="pdparam">j</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <b class="fsfunc">sd_journal_flush_matches</b>(</code></td><td>sd_journal *<var class="pdparam">j</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="idm47197589715440"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p><code class="function">sd_journal_add_match()</code> adds a match by - which to filter the entries of the journal file. Matches applied - with this call will filter what can be iterated through and read - from the journal file via calls like - <a href="sd_journal_next.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_next</span>(3)</span></a> - and - <a href="sd_journal_get_data.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_data</span>(3)</span></a>. - Matches are of the form "<code class="literal">FIELD=value</code>", where the - field part is a short uppercase string consisting only of 0-9, A-Z - and the underscore. It may not begin with two underscores or be - the empty string. The value part may be any value, including - binary. If a match is applied, only entries with this field set - will be iterated. Multiple matches may be active at the same time: - If they apply to different fields, only entries with both fields - set like this will be iterated. If they apply to the same fields, - only entries where the field takes one of the specified values - will be iterated. Well known fields are documented in - <a href="systemd.journal-fields.html"><span class="citerefentry"><span class="refentrytitle">systemd.journal-fields</span>(7)</span></a>. - Whenever a new match is added the current entry position is reset, - and - <a href="sd_journal_next.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_next</span>(3)</span></a> - (or a similar call) needs to be called before entries can be read - again.</p><p><code class="function">sd_journal_add_disjunction()</code> may be - used to insert a disjunction (i.e. logical OR) in the match list. - If this call is invoked, all previously added matches since the - last invocation of - <code class="function">sd_journal_add_disjunction()</code> or - <code class="function">sd_journal_add_conjunction()</code> are combined in - an OR with all matches added afterwards, until - <code class="function">sd_journal_add_disjunction()</code> or - <code class="function">sd_journal_add_conjunction()</code> is invoked again - to begin the next OR or AND term. </p><p><code class="function">sd_journal_add_conjunction()</code> may be - used to insert a conjunction (i.e. logical AND) in the match list. - If this call is invoked, all previously added matches since the - last invocation of - <code class="function">sd_journal_add_conjunction()</code> are combined in - an AND with all matches added afterwards, until - <code class="function">sd_journal_add_conjunction()</code> is invoked again - to begin the next AND term. The combination of - <code class="function">sd_journal_add_match()</code>, - <code class="function">sd_journal_add_disjunction()</code> and - <code class="function">sd_journal_add_conjunction()</code> may be used to - build complex search terms, even though full logical expressions - are not available. Note that - <code class="function">sd_journal_add_conjunction()</code> operates one - level 'higher' than - <code class="function">sd_journal_add_disjunction()</code>. It is hence - possible to build an expression of AND terms, consisting of OR - terms, consisting of AND terms, consisting of OR terms of matches - (the latter OR expression is implicitly created for matches with - the same field name, see above).</p><p><code class="function">sd_journal_flush_matches()</code> may be used - to flush all matches, disjunction and conjunction terms again. - After this call all filtering is removed and all entries in the - journal will be iterated again.</p><p>Note that filtering via matches only applies to the way the - journal is read, it has no effect on storage on disk.</p></div><div class="refsect1"><a name="idm47197585081120"></a><h2 id="Return Value">Return Value<a class="headerlink" title="Permalink to this headline" href="#Return%20Value">¶</a></h2><p><code class="function">sd_journal_add_match()</code>, - <code class="function">sd_journal_add_disjunction()</code> and - <code class="function">sd_journal_add_conjunction()</code> - return 0 on success or a negative errno-style error - code. <code class="function">sd_journal_flush_matches()</code> - returns nothing.</p></div><div class="refsect1"><a name="idm47197585077600"></a><h2 id="Notes">Notes<a class="headerlink" title="Permalink to this headline" href="#Notes">¶</a></h2><p>The <code class="function">sd_journal_add_match()</code>, - <code class="function">sd_journal_add_disjunction()</code>, - <code class="function">sd_journal_add_conjunction()</code> and - <code class="function">sd_journal_flush_matches()</code> - interfaces are available as a shared library, which can - be compiled and linked to with the - <code class="constant">libsystemd</code> <a href="http://linux.die.net/man/1/pkg-config"><span class="citerefentry"><span class="refentrytitle">pkg-config</span>(1)</span></a> - file.</p></div><div class="refsect1"><a name="idm47197585072432"></a><h2 id="Examples">Examples<a class="headerlink" title="Permalink to this headline" href="#Examples">¶</a></h2><p>The following example adds matches to a journal context - object to iterate only through messages generated by the Avahi - service at the four error log levels, plus all messages of the - message ID 03bb1dab98ab4ecfbf6fff2738bdd964 coming from any - service (this example lacks the necessary error checking):</p><pre class="programlisting">... -int add_matches(sd_journal *j) { - sd_journal_add_match(j, "_SYSTEMD_UNIT=avahi-daemon.service", 0); - sd_journal_add_match(j, "PRIORITY=0", 0); - sd_journal_add_match(j, "PRIORITY=1", 0); - sd_journal_add_match(j, "PRIORITY=2", 0); - sd_journal_add_match(j, "PRIORITY=3", 0); - sd_journal_add_disjunction(j); - sd_journal_add_match(j, "MESSAGE_ID=03bb1dab98ab4ecfbf6fff2738bdd964", 0); -}</pre></div><div class="refsect1"><a name="idm47197585069520"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p> - <a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>, - <a href="sd-journal.html"><span class="citerefentry"><span class="refentrytitle">sd-journal</span>(3)</span></a>, - <a href="sd_journal_open.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_open</span>(3)</span></a>, - <a href="sd_journal_next.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_next</span>(3)</span></a>, - <a href="sd_journal_get_data.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_data</span>(3)</span></a>, - <a href="systemd.journal-fields.html"><span class="citerefentry"><span class="refentrytitle">systemd.journal-fields</span>(7)</span></a> - </p></div></div></body></html> |