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MFC r342792, r342805: Provide rc_service variable for rc service scripts

Description

MFC r342792, r342805: Provide rc_service variable for rc service scripts

r342792: rc.subr: Provide rc_service variable for service scripts

Some rc scripts in ports (e.g. uwsgi, apache, openvpn) allow for
'application profiles' that usually require the rc script to be invoked
again for each active profile. Because there's no consistent way to
determine the path because it differs between manual/service(8) invocations
and /etc/rc invocations, this leads to patterns like these:

  • www/uwsgi hardcodes the script path
  • security/openvpn guesses either $_file or $0 based on $0 = /etc/rc

Instead of forcing rc scripts to guess, provide an rc_service variable to
the scripts that gets set appropriately both for direct execution or when a
script is being executed via run_rc_script (e.g. /etc/rc).

This is our analog of an OpenRC variable with the same name, different case
(RC_SERVICE).

r342805: rc.subr: Fix typo

Originally intended as 'in case in needs to be re-invoked', but it was later
decided (by myself) that 're-invoke itself' makes it more clear that the
script is expected to use this in a way.

PR: 234614

Details

Committed
kevansJan 15 2019, 4:12 PM
Parents
rS343045: MFC r342792, r342805: Provide rc_service variable for rc service scripts
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