NetBSD Problem Report #57632
From www@netbsd.org Wed Sep 27 05:15:26 2023
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Date: Wed, 27 Sep 2023 05:15:25 +0000 (UTC)
From: yamt9999@gmail.com
Reply-To: yamt9999@gmail.com
To: gnats-bugs@NetBSD.org
Subject: O_RSYNC|O_DSYNC mismatch what posix says
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>Number: 57632
>Category: kern
>Synopsis: O_RSYNC|O_DSYNC mismatch what posix says
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Wed Sep 27 05:20:00 +0000 2023
>Originator: YAMAMOTO Takashi
>Release: trunk source code around 2023-09
>Organization:
>Environment:
>Description:
posix says:
> If both O_DSYNC and O_RSYNC are set in oflag, all I/O operations
> on the file descriptor shall complete as defined by synchronized
> I/O data integrity completion.
and "Synchronized I/O Data Integrity Completion" should:
> For read, ..... If there were any pending write requests affecting
> the data to be read at the time that the synchronized read
> operation was requested, these write requests are successfully
> transferred prior to reading the data.
netbsd open(2) says:
> Combining O_RSYNC with O_DSYNC only, or specifying it
> without any other synchronized I/O integrity comple-
> tion flag set, has no further effect.
glancing ffs code, it seems to match what the man page says.
>How-To-Repeat:
read doc and code.
>Fix:
(Contact us)
$NetBSD: query-full-pr,v 1.47 2022/09/11 19:34:41 kim Exp $
$NetBSD: gnats_config.sh,v 1.9 2014/08/02 14:16:04 spz Exp $
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