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From: Amir Goldstein <amir73il@gmail.com>
To: Theodore Tso <tytso@mit.edu>,
	Phillip Potter <phil@philpotter.co.uk>,
	Al Viro <viro@zeniv.linux.org.uk>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: Re: [RFC][PATCH v3 01/10] fs: common implementation of file type
Date: Wed, 24 Oct 2018 17:41:15 +0300	[thread overview]
Message-ID: <CAOQ4uxhGGZv52Ch2NjxOFt35KsFpja=jCk-x8jBNZcxRe9OoYA@mail.gmail.com> (raw)
In-Reply-To: <20181024130206.GC11606@thunk.org>

On Wed, Oct 24, 2018 at 4:02 PM Theodore Y. Ts'o <tytso@mit.edu> wrote:
>
> On Tue, Oct 23, 2018 at 09:19:53PM +0100, Phillip Potter wrote:
> > diff --git a/include/linux/file_type.h b/include/linux/file_type.h
>
> Shouldn't this be in include/uapi/linux/fs_types.h?
>

IDGI. Why do we want this file in uapi?
The DT_ constants are already defined by glibc dirent.h
and the FT_ constants and macros we don't want to expose
to uapi at all. Right?

Maybe all we need is a comment above DT_ constants
that those are defined by POSIX and in glibc dirent.h?

> One of things which must be made crystal clear is these definitions
> MUST NOT ever change.  It would break the Userspace ABI, and would
> break file systems on-disk format.
>
> It might also be useful to be clear *why* we are making this change in
> the first place.  Code refactorization is good from a code maintenance
> perspective (either to fix bugs, although this code is pretty
> trivial),

Very trivial code that has had an out of bounds access bug for two
decades and bug was duplicated to 7 filesystems. IMO, fixing the bug in
one place instead of 7 is a good enough reason for re-factoring.

Thanks,
Amir.

  reply	other threads:[~2018-10-24 14:41 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-23 20:19 Phillip Potter
2018-10-24  6:16 ` Amir Goldstein
2018-10-24  8:21   ` Phillip Potter
2018-10-24  9:20     ` Amir Goldstein
2018-10-24  9:31       ` Phillip Potter
2018-10-24  9:44         ` Amir Goldstein
2018-10-24  9:56           ` Phillip Potter
2018-10-24 10:06             ` Amir Goldstein
2018-10-24 12:37 ` Al Viro
2018-10-24 13:02 ` Theodore Y. Ts'o
2018-10-24 14:41   ` Amir Goldstein [this message]
2018-10-25 11:20 ` Jan Kara

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