Re: [gentoo-dev] Init Scripts

[Martin Schlemmer]

On Sat, 2003-06-28 at 18:11, James Yonan wrote:
> Hi,
>
> I'm new to Gentoo and I'm trying to convert the RedHat init script for OpenVPN
> over to Gentoo's format.  Though I'm still learning the Gentoo way of writing
> init scripts, I would like to suggest the following additions to runscript.sh:
>
> (1) There should be an easy-to-call support function so an init script can
> tell whether or not it has been started such as:
>
> started() {
>     if [ -L "${svcdir}/started/${myservice}" ]; then
>         return 1
>     else
>         return 0
>     fi
> }
>

Already done in 1.8.6.*:

------------------------
# bool service_started(service)
#
#   Returns true if 'service' is started
#
service_started() {
------------------------


> (2) Condrestart is a useful init script method, often seen in RH init scripts.
>    It basically says "restart only if service is already running".  It is
> commonly used to restart a daemon after a software update.  OpenVPN needs it
> so that the VPN daemon can be restarted if a network adaptor gets a new IP
> address from a DHCP server.  In cases like these, you obviously don't want to
> restart the daemon unless it is already running.  Condrestart becomes
> breathtakingly simple if started() above is defined:
>
> condrestart() {
>     started || restart
> }
>

Well, you could do:

   [ -n "$(${myservice} status | grep 'started')" ] && \
	${myservice} restart


Regards,

-- 

Martin Schlemmer
Gentoo Linux Developer, Desktop/System Team Developer
Cape Town, South Africa