From: Amir Goldstein <amir73il@gmail.com>
To: Matthew Bobrowski <repnop@google.com>
Cc: Jan Kara <jack@suse.cz>,
Christian Brauner <christian.brauner@ubuntu.com>,
Linux API <linux-api@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: Re: [PATCH 2/2] fanotify: Add pidfd support to the fanotify API
Date: Mon, 26 Apr 2021 14:11:30 +0300 [thread overview]
Message-ID: <CAOQ4uxhp3khQ9Ln2g9s5WLEsb-Cv2vdsZTuYUgQx-DW6GR1RmQ@mail.gmail.com> (raw)
In-Reply-To: <YIaVbWu8up3RY7gf@google.com>
> Amir, I was just thinking about this a little over the weekend and I
> don't think we discussed how to handle the FAN_REPORT_PIDFD |
> FAN_REPORT_FID and friends case? My immediate thought is to make
> FAN_REPORT_PIDFD mutually exclusive with FAN_REPORT_FID and friends,
> but then again receiving a pidfd along with FID events may be also
> useful for some? What are your thoughts on this? If we don't go ahead
> with mutual exclusion, then this multiple event types alongside struct
> fanotify_event_metadata starts getting a little clunky, don't you
> think?
>
The current format of an fanotify event already supports multiple info records:
[fanotify_event_metadata]
[[fanotify_event_info_header][event record #1]]
[[fanotify_event_info_header][event record #2]]...
(meta)->event_len is the total event length including all info records.
For example, FAN_REPORT_FID | FAN_REPORT_DFID_MAME produces
(for some events) two info records, one FAN_EVENT_INFO_TYPE_FID
record and one FAN_EVENT_INFO_TYPE_DFID_NAME record.
So I see no problem with combination of FAN_REPORT_FID
and FAN_REPORT_PIDFD.
Thanks,
Amir.
next prev parent reply other threads:[~2021-04-26 11:11 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-15 23:21 [PATCH 0/2] fanotify: Adding pidfd support to the fanotify API Matthew Bobrowski
2021-04-15 23:22 ` [PATCH 1/2] pidfd_create(): remove static qualifier and declare pidfd_create() in linux/pid.h Matthew Bobrowski
2021-04-19 10:13 ` Jan Kara
2021-04-19 12:50 ` Christian Brauner
2021-04-20 0:17 ` Matthew Bobrowski
2021-04-15 23:22 ` [PATCH 2/2] fanotify: Add pidfd support to the fanotify API Matthew Bobrowski
2021-04-16 6:27 ` Amir Goldstein
2021-04-16 7:05 ` Matthew Bobrowski
2021-04-16 7:53 ` Amir Goldstein
2021-04-16 8:08 ` Matthew Bobrowski
2021-04-19 13:02 ` Christian Brauner
2021-04-19 10:21 ` Jan Kara
2021-04-20 1:35 ` Matthew Bobrowski
2021-04-19 13:20 ` Christian Brauner
2021-04-19 13:53 ` Amir Goldstein
2021-04-19 14:44 ` Christian Brauner
2021-04-19 13:55 ` Jan Kara
2021-04-19 15:02 ` Christian Brauner
2021-04-20 2:36 ` Matthew Bobrowski
2021-04-21 8:04 ` Jan Kara
2021-04-21 9:29 ` Amir Goldstein
2021-04-21 10:00 ` Jan Kara
2021-04-21 10:12 ` Amir Goldstein
2021-04-21 13:48 ` Jan Kara
2021-04-21 14:46 ` Christian Brauner
2021-04-22 23:06 ` Matthew Bobrowski
2021-04-23 7:39 ` Amir Goldstein
2021-04-23 8:02 ` Matthew Bobrowski
2021-04-23 8:14 ` Amir Goldstein
2021-04-26 10:26 ` Matthew Bobrowski
2021-04-26 11:11 ` Amir Goldstein [this message]
2021-04-27 3:35 ` Matthew Bobrowski
2021-04-27 5:14 ` Amir Goldstein
2021-04-28 22:53 ` Matthew Bobrowski
2021-04-19 12:34 ` [PATCH 0/2] fanotify: Adding " Christian Brauner
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