first child, so that only the second
child (the actual daemon process)
stays around. This ensures that the
first child, so that only the second
child (the actual daemon process)
stays around. This ensures that the
<function>exit()</function> in the
original process. The process that
invoked the daemon must be able to
<function>exit()</function> in the
original process. The process that
invoked the daemon must be able to
<function>exit()</function> happens
after initialization is complete and
all external communication channels
<function>exit()</function> happens
after initialization is complete and
all external communication channels
compatibility with SysV systems should
implement the scheme pointed out
above. However, it is recommended to make this
compatibility with SysV systems should
implement the scheme pointed out
above. However, it is recommended to make this
command line argument, to ease debugging as
well as to simplify integration into systems
using systemd.</para>
command line argument, to ease debugging as
well as to simplify integration into systems
using systemd.</para>
for details.</para></listitem>
<listitem><para>As much as possible,
for details.</para></listitem>
<listitem><para>As much as possible,
functionality to limit the access of
the daemon to files, services and
other resources. i.e. in the case of
functionality to limit the access of
the daemon to files, services and
other resources. i.e. in the case of
creating and binding them themselves. For
details about the programming interfaces for
this scheme provided by systemd see
creating and binding them themselves. For
details about the programming interfaces for
this scheme provided by systemd see
systemd, kernel devices appearing in the
sysfs/udev device tree can be exposed as units
if they are tagged with the string
systemd, kernel devices appearing in the
sysfs/udev device tree can be exposed as units
if they are tagged with the string
kind of unit they may then pull in other units
when activated (i.e. Plugged in) and thus
implement device-based activation. Systemd
kind of unit they may then pull in other units
when activated (i.e. Plugged in) and thus
implement device-based activation. Systemd
consider implementing socket-based activation
(see above). Usually a minimal patch is
sufficient to implement this: Extend the
consider implementing socket-based activation
(see above). Usually a minimal patch is
sufficient to implement this: Extend the
<function>sd_listen_fds()</function> returns a
positive value), skip the socket creation step
and use the passed sockets. Secondly, ensure
<function>sd_listen_fds()</function> returns a
positive value), skip the socket creation step
and use the passed sockets. Secondly, ensure
activation are not removed when the daemon
shuts down, if sockets have been
passed. Third, if the daemon normally closes
activation are not removed when the daemon
shuts down, if sockets have been
passed. Third, if the daemon normally closes