Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ 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
- General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
+ You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
-->
<refsynopsisdiv>
<funcsynopsis>
- <funcsynopsisinfo>#include "sd-daemon.h"</funcsynopsisinfo>
+ <funcsynopsisinfo>#include <systemd/sd-daemon.h></funcsynopsisinfo>
<funcprototype>
<funcdef>int <function>sd_notify</function></funcdef>
itself. Example:
"MAINPID=4711"</para></listitem>
</varlistentry>
+
+ <varlistentry>
+ <term>WATCHDOG=1</term>
+
+ <listitem><para>Tells systemd to
+ update the watchdog timestamp.
+ Services using this feature should do
+ this in regular intervals. A watchdog
+ framework can use the timestamps to
+ detect failed
+ services.</para></listitem>
+ </varlistentry>
</variablelist>
<para>It is recommended to prefix variable names that
for details.</para>
<para><function>sd_notifyf()</function> is similar to
- <function>sd_notifyf()</function> but takes a
+ <function>sd_notify()</function> but takes a
<function>printf()</function>-like format string plus
arguments.</para>
</refsect1>
datagram is accompanied by the process credentials of
the sending daemon, using SCM_CREDENTIALS.</para>
- <para>For details about the algorithm check the
+ <para>For details about the algorithms check the
liberally licensed reference implementation sources:
- <ulink url="http://cgit.freedesktop.org/systemd/tree/src/sd-daemon.c"/>
+ <ulink url="http://cgit.freedesktop.org/systemd/systemd/plain/src/sd-daemon.c"/>
resp. <ulink
- url="http://cgit.freedesktop.org/systemd/tree/src/sd-daemon.h"/></para>
+ url="http://cgit.freedesktop.org/systemd/systemd/plain/src/systemd/sd-daemon.h"/></para>
<para><function>sd_notify()</function> and
<function>sd_notifyf()</function> are implemented in
- the reference implementation's drop-in
+ the reference implementation's
<filename>sd-daemon.c</filename> and
- <filename>sd-daemon.h</filename> files. It is
- recommended that applications consuming these APIs
- copy the implementation into their source tree. For
+ <filename>sd-daemon.h</filename> files. These
+ interfaces are available as shared library, which can
+ be compiled and linked to with the
+ <literal>libsystemd-daemon</literal>
+ <citerefentry><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ file. Alternatively, applications consuming these APIs
+ may copy the implementation into their source tree. For
more details about the reference implementation see
- <citerefentry><refentrytitle>sd_daemon</refentrytitle><manvolnum>7</manvolnum></citerefentry></para>
+ <citerefentry><refentrytitle>sd_daemon</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
- <para>If -DDISABLE_SYSTEMD is set during compilation
- this function will always return 0 and otherwise
- become a NOP.</para>
+ <para>If the reference implementation is used as
+ drop-in files and -DDISABLE_SYSTEMD is set during
+ compilation these functions will always return 0 and
+ otherwise become a NOP.</para>
</refsect1>
<refsect1>