linux-kernel - Re: [BUG] Device node major comes out wrong on HFS+ under linux

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Message-ID: <1318919100.1652.6.camel@localhost.localdomain>
Date:	Tue, 18 Oct 2011 08:25:00 +0200
From:	Thomas Meyer <thomas@...3r.de>
To:	DagB <dag@...ke.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [BUG] Device node major comes out wrong on HFS+ under linux

Am Samstag, den 15.10.2011, 20:04 +0200 schrieb DagB:
> Hi.
> 
> Executive summary:
> 
> /dev/null:
> osx:	crw-rw-rw- 1 root wheel 1, 3 Oct 13 04:12 null	
> linux:	crw-rw-rw- 1 root root 16, 3 Oct 13 02:12 /dev/null
> 
> /dev/console:
> osx:	crw------- 1 root wheel 5, 1 Oct 13 04:12 console
> linux:	crw------- 1 root root 80, 1 Oct 13 02:12 /dev/console
> 
> /dev/sda4:
> osx:	brw-r----- 1 root wheel  8, 4 Oct 13 04:12 sda4
> linux:	brw-r----- 1 root root 128, 4 Oct 13 02:12 /dev/sda4

> 
> Anyone care to squash this bug, please?
> 

This is not a bug. Linux uses a 12/20 split for major and minor device
ids and the xnu kernel uses a 8/24 split:

8, 4
00001000 000000000000000000000100
= 128, 4
000010000000 00000000000000000100

with kind regards
thomas


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