From: Christian Brauner <[email protected]>
To: Linus Torvalds <[email protected]>
Cc: "Daniel Vetter" <[email protected]>,
"Simon Ser" <[email protected]>,
"Pekka Paalanen" <[email protected]>,
"Christian König" <[email protected]>,
"Al Viro" <[email protected]>,
[email protected], [email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected],
[email protected],
[email protected]
Subject: Re: [Linaro-mm-sig] Re: [PATCH] epoll: try to be a _bit_ better about file lifetimes
Date: Wed, 8 May 2024 10:05:40 +0200 [thread overview]
Message-ID: <20240508-gefangen-unberechenbar-96845bd61def@brauner> (raw)
In-Reply-To: <CAHk-=whFyOn4vp7+++MTOd1Y3wgVFxRoVdSuPmN1_b6q_Jjkxg@mail.gmail.com>
On Tue, May 07, 2024 at 12:07:10PM -0700, Linus Torvalds wrote:
> On Tue, 7 May 2024 at 11:04, Daniel Vetter <[email protected]> wrote:
> >
> > On Tue, May 07, 2024 at 09:46:31AM -0700, Linus Torvalds wrote:
> >
> > > I'd be perfectly ok with adding a generic "FISAME" VFS level ioctl
> > > too, if this is possibly a more common thing. and not just DRM wants
> > > it.
> > >
> > > Would something like that work for you?
> >
> > Yes.
> >
> > Adding Simon and Pekka as two of the usual suspects for this kind of
> > stuff. Also example code (the int return value is just so that callers know
> > when kcmp isn't available, they all only care about equality):
> >
> > https://gitlab.freedesktop.org/mesa/mesa/-/blob/main/src/util/os_file.c#L239
>
> That example thing shows that we shouldn't make it a FISAME ioctl - we
> should make it a fcntl() instead, and it would just be a companion to
> F_DUPFD.
>
> Doesn't that strike everybody as a *much* cleaner interface? I think
+1
See
https://github.com/systemd/systemd/blob/a4f0e0da3573a10bc5404142be8799418760b1d1/src/basic/fd-util.c#L517
that's another heavy user of this kind of functionality.
next prev parent reply other threads:[~2024-05-08 8:05 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-08 8:26 [syzbot] [fs?] [io-uring?] general protection fault in __ep_remove syzbot
2024-04-15 14:31 ` Jens Axboe
2024-04-15 14:57 ` Pavel Begunkov
2024-05-03 11:54 ` Bui Quang Minh
2024-05-03 18:26 ` get_file() unsafe under epoll (was Re: [syzbot] [fs?] [io-uring?] general protection fault in __ep_remove) Kees Cook
2024-05-03 18:49 ` Jens Axboe
2024-05-03 19:22 ` Kees Cook
2024-05-03 19:35 ` Jens Axboe
2024-05-03 19:59 ` Kees Cook
2024-05-03 20:28 ` Kees Cook
2024-05-03 21:11 ` Al Viro
2024-05-03 21:24 ` Linus Torvalds
2024-05-03 21:30 ` Al Viro
2024-05-06 17:46 ` Stefan Metzmacher
2024-05-06 18:17 ` Linus Torvalds
2024-05-08 8:47 ` David Laight
2024-05-03 21:36 ` Al Viro
2024-05-03 21:42 ` Linus Torvalds
2024-05-03 21:53 ` Al Viro
2024-05-06 12:23 ` Daniel Vetter
2024-05-04 9:59 ` Christian Brauner
2024-05-03 21:11 ` [PATCH] epoll: try to be a _bit_ better about file lifetimes Linus Torvalds
2024-05-03 21:24 ` Al Viro
2024-05-03 21:33 ` Linus Torvalds
2024-05-03 21:45 ` Al Viro
2024-05-03 21:52 ` Linus Torvalds
2024-05-03 22:01 ` Al Viro
2024-05-03 22:07 ` Al Viro
2024-05-03 23:16 ` Linus Torvalds
2024-05-03 23:39 ` Al Viro
2024-05-03 23:54 ` Linus Torvalds
2024-05-04 10:44 ` Christian Brauner
2024-05-03 22:46 ` Kees Cook
2024-05-03 23:03 ` Al Viro
2024-05-03 23:23 ` Kees Cook
2024-05-03 23:41 ` Linus Torvalds
2024-05-04 9:19 ` Christian Brauner
2024-05-06 12:37 ` Daniel Vetter
2024-05-04 9:37 ` Christian Brauner
2024-05-04 15:32 ` Linus Torvalds
2024-05-04 15:40 ` Linus Torvalds
2024-05-04 15:53 ` Linus Torvalds
2024-05-05 19:46 ` Al Viro
2024-05-05 20:03 ` Linus Torvalds
2024-05-05 20:30 ` Al Viro
2024-05-05 20:53 ` Linus Torvalds
2024-05-06 12:47 ` Daniel Vetter
2024-05-06 14:46 ` Christian Brauner
2024-05-07 10:58 ` Daniel Vetter
2024-05-06 16:15 ` Christian König
2024-05-05 10:50 ` Christian Brauner
2024-05-05 16:46 ` Linus Torvalds
2024-05-05 17:55 ` [PATCH v2] epoll: be " Linus Torvalds
2024-05-05 18:04 ` Jens Axboe
2024-05-05 20:01 ` David Laight
2024-05-05 20:16 ` Linus Torvalds
2024-05-05 20:12 ` [PATCH] epoll: try to be a _bit_ " Al Viro
2024-05-06 8:45 ` Christian Brauner
2024-05-06 9:26 ` Christian Brauner
2024-05-06 14:19 ` Christian Brauner
2024-05-07 21:02 ` David Laight
2024-05-04 18:20 ` Linus Torvalds
2024-05-06 14:29 ` [Linaro-mm-sig] " Christian König
2024-05-07 11:02 ` Daniel Vetter
2024-05-07 16:46 ` Linus Torvalds
2024-05-07 17:45 ` Christian König
2024-05-08 7:51 ` Michel Dänzer
2024-05-08 7:59 ` Christian König
2024-05-08 8:23 ` Christian Brauner
2024-05-08 9:10 ` Christian König
2024-05-07 18:04 ` Daniel Vetter
2024-05-07 19:07 ` Linus Torvalds
2024-05-08 5:55 ` Christian König
2024-05-08 8:32 ` Daniel Vetter
2024-05-08 10:16 ` Christian Brauner
2024-05-08 8:05 ` Christian Brauner [this message]
2024-05-08 16:19 ` Linus Torvalds
2024-05-08 17:14 ` Linus Torvalds
2024-05-09 11:38 ` Christian Brauner
2024-05-09 15:48 ` Linus Torvalds
2024-05-10 6:33 ` Christian Brauner
2024-05-08 10:08 ` Christian Brauner
2024-05-08 15:45 ` Daniel Vetter
2024-05-10 10:55 ` Christian Brauner
2024-05-11 18:25 ` David Laight
2024-05-05 17:31 ` Jens Axboe
2024-05-04 9:45 ` get_file() unsafe under epoll (was Re: [syzbot] [fs?] [io-uring?] general protection fault in __ep_remove) Christian Brauner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240508-gefangen-unberechenbar-96845bd61def@brauner \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox