linux-kernel - Re: Splicing to/from a tty

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Message-ID: <a60c9b90b5db4dbc40ad9cf8c0cfadc01bd4fd2c.camel@sipsolutions.net>
Date:   Thu, 21 Jan 2021 09:04:55 +0100
From:   Johannes Berg <johannes@...solutions.net>
To:     Willy Tarreau <w@....eu>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Al Viro <viro@...iv.linux.org.uk>, Christoph Hellwig <hch@....de>,
        Oliver Giles <ohw.giles@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: Splicing to/from a tty

On Thu, 2021-01-21 at 07:05 +0100, Willy Tarreau wrote:

> I think that most users of splice() on sockets got used to falling back
> to recv/send on splice failure due to various cases not being supported
> historically (UNIX family sockets immediately come to my mind but I seem
> to remember other combinations).

Note, however, that I got here because cgit, if using sendfile(), does
*not* fall back if it fails (and thus my git tree view is currently down
because I haven't downgraded the kernel so far). That may not be common
for splice() though.

johannes