Date: Thu, 1 Feb 2007 20:36:47 +1100 From: Peter Jeremy <peterjeremy@optushome.com.au> To: Luigi Rizzo <rizzo@icir.org> Cc: arch@freebsd.org Subject: Re: configurable device (and other) tables in the kernel ? Message-ID: <20070201093647.GA909@turion.vk2pj.dyndns.org> In-Reply-To: <20070131115148.A60420@xorpc.icir.org> References: <20070131115148.A60420@xorpc.icir.org>
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On Wed, 2007-Jan-31 11:51:48 -0800, Luigi Rizzo wrote:
>What are the options to implement a mechanism that lets
>userland update such tables, and maybe in a way that
>is accessible to the boot loader ?
It doesn't help the bootloader but /dev/FOO.ctl may be an option
for dumping configuration data into a device.
>The (obvious) requirements are:
> + support for multiple tables with variable (maybe defined
> at compile time) structure;
Passing binary blobs back and forth through sysctl requires code
in sysctl(8) to {en,de}code whereas the all-text approach makes
the OID tree look messy. It would be nice if sysctl grew a
configuration file (or maybe magic OIDs that let it retrieve
the description of opaque OIDs).
--=20
Peter Jeremy
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