linux-kernel - Re: [RFC PATCH] file as directory

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Message-ID: <Pine.LNX.4.61.0705231358020.4452@yvahk01.tjqt.qr>
Date:	Wed, 23 May 2007 14:01:24 +0200 (MEST)
From:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
To:	Miklos Szeredi <miklos@...redi.hu>
cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	akpm@...ux-foundation.org, viro@....linux.org.uk,
	torvalds@...ux-foundation.org
Subject: Re: [RFC PATCH] file as directory

On May 22 2007 20:48, Miklos Szeredi wrote:
>Why do we want this?
>--------------------
>
>That depends on who you ask.  My answer is this:
>
>  'foo.tar.gz/foo/bar' or
>  'foo.tar.gz/contents/foo/bar'
>
>or something similar.

Stole reiser4 an idea.
These semantics are quite fragile. Until now, chdir is only possible
for directories (otherwise, -ENOTDIR), and opening a directory without
O_DIRECTORY gives -EISDIR. You can't just change semantics.

That said, with FUSE, something like this should already be possible,
should not it?

And looking at your example of foo.tar.gz/foo/bar,the tar.gz needs to
be read at least once to get at foo/bar.

	Jan
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