From: Peter Maydell <peter.maydell@linaro.org>
To: Eric Blake <eblake@redhat.com>
Cc: "Theodore Y. Ts'o" <tytso@mit.edu>,
Linus Walleij <linus.walleij@linaro.org>,
Linux API <linux-api@vger.kernel.org>,
QEMU Developers <qemu-devel@nongnu.org>,
Florian Weimer <fw@deneb.enyo.de>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Andy Lutomirski <luto@kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Ext4 Developers List <linux-ext4@vger.kernel.org>
Subject: Re: [PATCH] fcntl: Add 32bit filesystem mode
Date: Mon, 20 Apr 2020 16:29:32 +0100 [thread overview]
Message-ID: <CAFEAcA9BQQah2vVfnwO4-3m4eHv9QtfvjvDpTdw+SmqicsDOMA@mail.gmail.com> (raw)
In-Reply-To: <d3fb73a3-ecf6-6371-783f-24a94eb66c59@redhat.com>
On Mon, 20 Apr 2020 at 16:24, Eric Blake <eblake@redhat.com> wrote:
> It will be interesting to find how much code (wrongly) assumes it can
> use a blind assignment of fcntl(fd, F_SETFD, 1) and thereby accidentally
> wipes out other existing flags, when it should have instead been doing a
> read-modify-write to protect flags other than FD_CLOEXEC.
For instance, a quick grep shows 4 instances of this in QEMU :-)
thanks
-- PMM
next prev parent reply other threads:[~2020-04-20 15:29 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-31 13:35 [PATCH] fcntl: Add 32bit filesystem mode Linus Walleij
2020-04-20 11:19 ` Peter Maydell
2020-04-20 11:23 ` Florian Weimer
2020-04-20 11:38 ` Peter Maydell
2020-04-20 14:16 ` Peter Maydell
2020-04-20 23:51 ` Andreas Dilger
2020-04-21 13:02 ` Peter Maydell
2020-04-20 15:13 ` Theodore Y. Ts'o
2020-04-20 15:23 ` Eric Blake
2020-04-20 15:29 ` Peter Maydell [this message]
2020-04-20 17:01 ` Theodore Y. Ts'o
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