<para>Internally, these functions send a single
datagram with the state string as payload to the
<para>Internally, these functions send a single
datagram with the state string as payload to the
understood as Linux abstract namespace socket. The
datagram is accompanied by the process credentials of
the sending daemon, using SCM_CREDENTIALS.</para>
understood as Linux abstract namespace socket. The
datagram is accompanied by the process credentials of
the sending daemon, using SCM_CREDENTIALS.</para>
<filename>sd-daemon.h</filename> files. These
interfaces are available as shared library, which can
be compiled and linked to with the
<filename>sd-daemon.h</filename> files. These
interfaces are available as shared library, which can
be compiled and linked to with the
file. Alternatively, applications consuming these APIs
may copy the implementation into their source tree. For
more details about the reference implementation see
file. Alternatively, applications consuming these APIs
may copy the implementation into their source tree. For
more details about the reference implementation see