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From: Miklos Szeredi <miklos@szeredi.hu>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Karel Zak <kzak@redhat.com>, David Howells <dhowells@redhat.com>,
	Ian Kent <raven@themaw.net>,
	Christian Brauner <christian.brauner@ubuntu.com>,
	James Bottomley <James.Bottomley@hansenpartnership.com>,
	Steven Whitehouse <swhiteho@redhat.com>,
	Miklos Szeredi <mszeredi@redhat.com>,
	viro <viro@zeniv.linux.org.uk>,
	Christian Brauner <christian@brauner.io>,
	Jann Horn <jannh@google.com>,
	"Darrick J. Wong" <darrick.wong@oracle.com>,
	Linux API <linux-api@vger.kernel.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 00/17] VFS: Filesystem information and notifications [ver #17]
Date: Tue, 3 Mar 2020 14:34:42 +0100	[thread overview]
Message-ID: <CAJfpegt0aQVvoDeBXOu2xZh+atZQ+q5uQ_JRxe46E8cZ7sHRwg@mail.gmail.com> (raw)
In-Reply-To: <20200303131434.GA2373427@kroah.com>

On Tue, Mar 3, 2020 at 2:14 PM Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:

> > Unlimited beers for a 21-line kernel patch?  Sign me up!
> >
> > Totally untested, barely compiled patch below.
>
> Ok, that didn't even build, let me try this for real now...

Some comments on the interface:

O_LARGEFILE can be unconditional, since offsets are not exposed to the caller.

Use the openat2 style arguments; limit the accepted flags to sane ones
(e.g. don't let this syscall create a file).

If buffer is too small to fit the whole file, return error.

Verify that the number of bytes read matches the file size, otherwise
return error (may need to loop?).

Thanks,
Miklos

  reply	other threads:[~2020-03-03 13:34 UTC|newest]

Thread overview: 117+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-21 18:01 [PATCH 00/17] VFS: Filesystem information and notifications [ver #17] David Howells
2020-02-21 18:01 ` [PATCH 01/17] watch_queue: Add security hooks to rule on setting mount and sb watches " David Howells
2020-02-21 18:02 ` [PATCH 02/17] watch_queue: Implement mount topology and attribute change notifications " David Howells
2020-02-21 18:02 ` [PATCH 03/17] watch_queue: sample: Display mount tree " David Howells
2020-02-21 18:02 ` [PATCH 04/17] watch_queue: Introduce a non-repeating system-unique superblock ID " David Howells
2020-02-21 18:02 ` [PATCH 05/17] watch_queue: Add superblock notifications " David Howells
2020-02-21 18:02 ` [PATCH 06/17] watch_queue: sample: Display " David Howells
2020-02-21 18:02 ` [PATCH 07/17] fsinfo: Add fsinfo() syscall to query filesystem information " David Howells
2020-02-26  2:29   ` Aleksa Sarai
2020-02-28 14:44   ` David Howells
2020-02-21 18:02 ` [PATCH 08/17] fsinfo: Provide a bitmap of supported features " David Howells
2020-02-21 18:03 ` [PATCH 09/17] fsinfo: Allow fsinfo() to look up a mount object by ID " David Howells
2020-02-21 18:03 ` [PATCH 10/17] fsinfo: Allow mount information to be queried " David Howells
2020-03-04 14:58   ` Miklos Szeredi
2020-03-04 16:10   ` Miklos Szeredi
2020-02-21 18:03 ` [PATCH 11/17] fsinfo: sample: Mount listing program " David Howells
2020-02-21 18:03 ` [PATCH 12/17] fsinfo: Allow the mount topology propogation flags to be retrieved " David Howells
2020-02-21 18:03 ` [PATCH 13/17] fsinfo: Query superblock unique ID and notification counter " David Howells
2020-02-21 18:03 ` [PATCH 14/17] fsinfo: Add API documentation " David Howells
2020-02-21 18:03 ` [PATCH 15/17] fsinfo: Add support for AFS " David Howells
2020-02-21 18:03 ` [PATCH 16/17] fsinfo: Add example support for Ext4 " David Howells
2020-02-21 18:04 ` [PATCH 17/17] fsinfo: Add example support for NFS " David Howells
2020-02-21 20:21 ` [PATCH 00/17] VFS: Filesystem information and notifications " James Bottomley
2020-02-24 10:24   ` Miklos Szeredi
2020-02-24 14:55     ` James Bottomley
2020-02-24 15:28       ` Miklos Szeredi
2020-02-25 12:13         ` Steven Whitehouse
2020-02-25 15:28           ` James Bottomley
2020-02-25 15:47             ` Steven Whitehouse
2020-02-26  9:11             ` Miklos Szeredi
2020-02-26 10:51               ` Steven Whitehouse
2020-02-27  5:06               ` Ian Kent
2020-02-27  9:36                 ` Miklos Szeredi
2020-02-27 11:34                   ` Ian Kent
2020-02-27 13:45                     ` Miklos Szeredi
2020-02-27 15:14                       ` Karel Zak
2020-02-28  0:43                         ` Ian Kent
2020-02-28  8:35                           ` Miklos Szeredi
2020-02-28 12:27                             ` Greg Kroah-Hartman
2020-02-28 16:24                               ` Miklos Szeredi
2020-02-28 17:15                                 ` Al Viro
2020-03-02  8:43                                   ` Miklos Szeredi
2020-03-02 10:34                                 ` Karel Zak
2020-02-28 16:42                               ` David Howells
2020-02-28 15:08                             ` James Bottomley
2020-02-28 15:40                               ` Miklos Szeredi
2020-02-28  0:12                       ` Ian Kent
2020-02-28 15:52             ` Christian Brauner
2020-02-28 16:36             ` David Howells
2020-03-02  9:09               ` Miklos Szeredi
2020-03-02  9:38                 ` Greg Kroah-Hartman
2020-03-03  5:27                 ` Ian Kent
2020-03-03  7:46                   ` Miklos Szeredi
2020-03-06 16:25                     ` Miklos Szeredi
2020-03-06 19:43                       ` Al Viro
2020-03-06 19:54                         ` Miklos Szeredi
2020-03-06 19:58                         ` Al Viro
2020-03-06 20:05                           ` Al Viro
2020-03-06 20:11                             ` Miklos Szeredi
2020-03-06 20:37                             ` Al Viro
2020-03-06 20:38                               ` Al Viro
2020-03-06 20:45                                 ` Al Viro
2020-03-06 20:49                                   ` Al Viro
2020-03-06 20:51                                     ` Miklos Szeredi
2020-03-06 21:28                                       ` Al Viro
2020-03-06 20:56                                     ` Al Viro
2020-03-06 20:51                                   ` Miklos Szeredi
2020-03-07  9:48                       ` Greg Kroah-Hartman
2020-03-07 20:48                         ` Miklos Szeredi
2020-03-03  9:12                   ` David Howells
2020-03-03  9:26                     ` Miklos Szeredi
2020-03-03  9:48                       ` Miklos Szeredi
2020-03-03 10:21                         ` Steven Whitehouse
2020-03-03 10:32                           ` Miklos Szeredi
2020-03-03 11:09                             ` Ian Kent
2020-03-03 10:00                       ` Christian Brauner
2020-03-03 10:13                         ` Miklos Szeredi
2020-03-03 10:25                           ` Christian Brauner
2020-03-03 11:33                             ` Miklos Szeredi
2020-03-03 11:56                               ` Christian Brauner
2020-03-03 11:38                       ` Karel Zak
2020-03-03 13:03                         ` Greg Kroah-Hartman
2020-03-03 13:14                           ` Greg Kroah-Hartman
2020-03-03 13:34                             ` Miklos Szeredi [this message]
2020-03-03 13:43                               ` Greg Kroah-Hartman
2020-03-03 14:10                                 ` Greg Kroah-Hartman
2020-03-03 14:13                                   ` Jann Horn
2020-03-03 14:24                                     ` Greg Kroah-Hartman
2020-03-03 15:44                                       ` Jens Axboe
2020-03-03 16:37                                         ` Greg Kroah-Hartman
2020-03-03 16:51                                         ` Jeff Layton
2020-03-03 16:55                                           ` Jens Axboe
2020-03-03 19:02                                             ` Jeff Layton
2020-03-03 19:07                                               ` Jens Axboe
2020-03-03 19:23                                               ` Jens Axboe
2020-03-03 19:43                                                 ` Jeff Layton
2020-03-03 20:33                                                   ` Jens Axboe
2020-03-03 21:03                                                     ` Jeff Layton
2020-03-03 21:20                                                       ` Jens Axboe
2020-03-03 14:10                                 ` Miklos Szeredi
2020-03-03 14:29                                   ` Greg Kroah-Hartman
2020-03-03 14:40                                     ` Jann Horn
2020-03-03 16:51                                       ` Greg Kroah-Hartman
2020-03-03 16:57                                         ` Jann Horn
2020-03-03 20:15                                         ` Greg Kroah-Hartman
2020-03-03 14:40                                   ` David Howells
2020-03-04  4:20                                   ` Ian Kent
2020-03-03 14:19                                 ` David Howells
2020-03-03 16:59                                   ` Greg Kroah-Hartman
2020-03-03 14:23                               ` Christian Brauner
2020-03-03 15:23                                 ` Greg Kroah-Hartman
2020-03-03 15:53                                 ` David Howells
2020-03-04  2:01                           ` Ian Kent
2020-03-04 15:22                             ` Karel Zak
2020-03-04 16:49                               ` Greg Kroah-Hartman
2020-03-04 17:55                                 ` Karel Zak
2020-03-03 14:09                         ` David Howells

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