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Date:      Sun, 23 Feb 2014 18:17:40 +0000
From:      David Chisnall <theraven@FreeBSD.org>
To:        Allan Jude <freebsd@allanjude.com>
Cc:        FreeBSD Current <freebsd-current@freebsd.org>
Subject:   Re: libinit idea
Message-ID:  <0DB376E3-8C7F-4F20-9DEE-4DB98C078571@FreeBSD.org>
In-Reply-To: <530A39BB.6070003@allanjude.com>
References:  <BLU179-W28221A0539478FDDF45ADDC6840@phx.gbl> <62A9DF47-C938-464B-92B6-9A2A96B5A9C9@FreeBSD.org> <530A39BB.6070003@allanjude.com>

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On 23 Feb 2014, at 18:11, Allan Jude <freebsd@allanjude.com> wrote:

> sysrc solves this nicely, it is in base now, and is great for
> programmatically adding, removing and changing lines in rc.conf style
> files. It is also in ports for older versions of FreeBSD where it is =
not
> in base.

The problem is, there is no such thing as an rc.conf style file.  =
rc.conf is just a shell script.  If you only edit it with sysrc, or you =
are careful to preserve the structure, then it's fine.  There is =
absolutely nothing stopping you, however, from writing arbitrarily =
complex shell scripts inside rc.conf.  Sure, it's a terrible idea to do =
so, but when has that ever stopped anyone?

An rc-replacement could enforce this by only accepting purely =
declarative files for configuration, guaranteeing that if they were =
syntactically valid they would also be machine editable, no matter what =
the user does to them.

David




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