lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <CAHk-=wjJ8YP4wswYCC8X2o68vFeVzLesXbW-QdUgzzOZKaHJQw@mail.gmail.com>
Date:   Fri, 7 Jul 2023 17:07:09 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Ahelenia ZiemiaƄska 
        <nabijaczleweli@...ijaczleweli.xyz>,
        Christian Brauner <brauner@...nel.org>,
        Jens Axboe <axboe@...nel.dk>,
        David Howells <dhowells@...hat.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Pending splice(file -> FIFO) excludes all other FIFO operations
 forever (was: ... always blocks read(FIFO), regardless of O_NONBLOCK on read side?)

On Fri, 7 Jul 2023 at 17:00, Matthew Wilcox <willy@...radead.org> wrote:
>
> Do we really want interruptible here rather than killable?

Yes, we actually do need to be just regular interruptible,

This is a bog-standard "IO to/from pipe" situation, which is interruptible.

> That is, do we want SIGWINCH or SIGALRM to result in a short read?

Now, that's a different issue, and is actually handled by the signal
layer: a signal that is ignored (where "ignored" includes the case of
"default handler") will be dropped early, exactly because we don't
want to interrupt things like tty or pipe reads when you resize the
window.

Of course, if you actually *catch* SIGWINCH, then you will get that
short read on a window change.

           Linus

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ