From: Christian Brauner <brauner@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Charles Mirabile <cmirabil@redhat.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Jan Kara <jack@suse.cz>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
Andrew Lutomirski <luto@kernel.org>, Peter Anvin <hpa@zytor.com>
Subject: Re: [PATCH] vfs: relax linkat() AT_EMPTY_PATH - aka flink() - requirements
Date: Fri, 12 Apr 2024 08:44:21 +0200 [thread overview]
Message-ID: <20240412-zander-graustufen-bf63bbaa88fd@brauner> (raw)
In-Reply-To: <CAHk-=wjuzUTH0ZiPe0dAZ4rcVeNoJxhK8Hh_WRBY-ZqM-pGBqg@mail.gmail.com>
On Thu, Apr 11, 2024 at 11:13:53AM -0700, Linus Torvalds wrote:
> On Thu, 11 Apr 2024 at 10:35, Charles Mirabile <cmirabil@redhat.com> wrote:
> >
> > And a slightly dubious addition to bypass these checks for tmpfiles
> > across the board.
>
> Does this make sense?
>
> I 100% agree that one of the primary reasons why people want flink()
> is that "open tmpfile, finalize contents and permissions, then link
> the final result into the filesystem".
>
> But I would expect that the "same credentials as open" check is the
> one that really matters.
Yes. There's no need to give O_TMPFILE special status there. We also end
up with a collection of special-cases which is just unpleasant.
next prev parent reply other threads:[~2024-04-12 6:44 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-11 0:10 [PATCH] vfs: relax linkat() AT_EMPTY_PATH - aka flink() - requirements Linus Torvalds
2024-04-11 0:20 ` Linus Torvalds
2024-04-11 2:39 ` Linus Torvalds
2024-04-11 9:04 ` Christian Brauner
2024-04-11 12:25 ` Christian Brauner
2024-04-11 16:21 ` Linus Torvalds
2024-04-12 8:56 ` Christian Brauner
2024-04-11 16:15 ` Linus Torvalds
2024-04-11 16:44 ` Charles Mirabile
2024-04-11 17:29 ` Charles Mirabile
2024-04-11 17:35 ` Charles Mirabile
2024-04-11 18:13 ` Linus Torvalds
2024-04-11 19:34 ` Linus Torvalds
2024-04-12 7:45 ` Christian Brauner
2024-04-12 15:36 ` Linus Torvalds
2024-04-11 20:08 ` Charles Mirabile
2024-04-11 20:22 ` Linus Torvalds
2024-04-12 6:44 ` Christian Brauner [this message]
2024-04-12 6:41 ` Christian Brauner
2024-04-12 9:07 ` Christian Brauner
2024-04-12 17:43 ` Linus Torvalds
2024-04-13 9:41 ` Christian Brauner
2024-04-13 15:16 ` Christian Brauner
2024-04-13 17:07 ` Linus Torvalds
2024-04-12 19:22 ` [PATCH] " Charles Mirabile
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