From: "Timothy A. Seufert" <tas@mindspring.com>
To: Ethan Benson <erbenson@alaska.net>,
linuxppc <linuxppc-dev@lists.linuxppc.org>
Subject: Re: TiBook, 1394, iPod working (sort of ;-)
Date: Wed, 28 Nov 2001 02:40:09 -0800 [thread overview]
Message-ID: <p05101000b82a6b5266c7@[10.0.0.42]> (raw)
In-Reply-To: <20011127155855.G10071@plato.local.lan>
At 3:58 PM -0900 11/27/01, Ethan Benson wrote:
>On Tue, Nov 27, 2001 at 09:28:47AM -0800, Brad Boyer wrote:
>>
>> Well, according to Apple's documentation, the only version of HFS+
>> is version 4, so I have no idea what's up with that...
>
>well it also doesn't document things like the permission bits, it just
>says they are unused and reserved, obviously this is not the case
>given OSX, apple just has not updated this document.
>
>that means theres a bit of reverse engineering involved as well since
>apple is using a newwer version of HFS+ which is not entirely
>documented.
The documentation is the source now, it would seem. (just like much
of Linux :) See:
xnu-9-1/bsd/hfs/
in the Darwin kernel (aka "xnu") source. hfs_format.h defines the
on-disk layout, including the structure used for storage of
permission bits.
From the information in that file it looks like the HFS+ version is
still 4, BTW.
Looks like it should even be possible to figure out how Apple did the
hard- and soft-link hacks. Maybe one day Linux will be able to boot
directly from HFS+ just as Darwin does. That would be perverse. :)
--
Tim Seufert
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2001-11-28 10:40 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-11-27 1:33 TiBook, 1394, iPod working (sort of ;-) Ira Weiny
2001-11-27 8:19 ` Ethan Benson
2001-11-27 17:28 ` Brad Boyer
2001-11-28 0:58 ` Ethan Benson
2001-11-28 10:40 ` Timothy A. Seufert [this message]
2001-11-28 11:55 ` Ethan Benson
2001-12-28 11:22 ` Benjamin Herrenschmidt
-- strict thread matches above, loose matches on Subject: below --
2001-11-27 8:02 Halfmann, Klaus
2001-11-27 8:24 ` Ethan Benson
2001-11-27 18:15 ` David A. Gatwood
2001-11-27 22:18 ` Benjamin Herrenschmidt
2001-11-27 23:20 ` Ira Weiny
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