linux-ext4 - Re: [PATCH] ext2: Don't export ext2_mask

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Message-ID: <20120322162825.GA4028@thunk.org>
Date:	Thu, 22 Mar 2012 12:28:25 -0400
From:	Ted Ts'o <tytso@....edu>
To:	Artem Bityutskiy <dedekind1@...il.com>
Cc:	Thierry Reding <thierry.reding@...onic-design.de>,
	Jan Kara <jack@...e.cz>, linux-kernel@...r.kernel.org,
	Al Viro <viro@...iv.linux.org.uk>, linux-ext4@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH] ext2: Don't export ext2_mask_flags() to user space

On Thu, Mar 22, 2012 at 08:00:41AM +0200, Artem Bityutskiy wrote:
> On Thu, 2012-03-22 at 06:53 +0100, Thierry Reding wrote:
> > What's the recommended fix for packages that cannot or will not use
> > libext2fs, like busybox? Copy the required parts into a private header
> > and use that instead?
> 
> The normal way is to just keep a private copy of the whole header file.
> Because the on-disk format stays compatible, those programs do not have
> to update the header very often - only rarely if they want to support
> some new feature.

Even if they're not iwlling to use libext2fs (for space reasons, I
would assume?  It can't be because of license compatibility issues
since they are both GPLv2), they could just simply grab the ext2_fs.h
from e2fsprogs.  That has all of the file system definitions for ext2,
ext3, and ext4.

Regards,

						- Ted
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