Systemd unit for chilli.service

[mmaridev]

Hi,

this is a first implementation of the systemd unit for chilli.service, although there are a few issues.

I wanted to build something more systemd-oriented than just a wrapper around the sysVinit script. Here some of the problems:

1. Usage of /var/run/chilli.$HS_LANIF.pid is impossible mainly due to this systemd issue so I had to move to just /run/chilli.pid (also, systemd reports use of /var/run is deprecated an on my setup is in fact a symlink to /run). In my understanding, the current init script don't provide any support for multiple interfaces but, if needed, we could use the chilli@interface syntax of systemd to trick the situation.
2. chilli runs as chilli user but needs to be invoked by root, so that it writes the .cfg.bin file. The most meaningful solution would be either to write the .cfg.bin file with ExecStartPre or to move the file to a location (e.g. /var/spool/chilli) writable by the chilli user. Is one of this possible?

refs #540

[mmaridev]

3. The current handling of running radconfig injected via crontab doesn't make me really happy, I don't think editing cron via a service file can be considered a good practice. Maybe in systemd this could be replicated with a timer?
4. Also running modprobe from the init file doesn't make that much sense to me. I think you should install via deb/rpm package something like /etc/modules-load.d/chilli.conf that loads tun at boot.

[mmaridev]

/cc @paolodongilli

[Neustradamus]

Dear @coova team, @sevan, @jobezic,

Have you progressed on this PR?