From: Eli Zaretskii <eliz@gnu.org>
To: "Peter" <emacs@nexoid.at>
Cc: emacs-devel@gnu.org
Subject: Re: Reading from pipes directly with a process-filter
Date: Fri, 13 Jan 2023 21:43:58 +0200 [thread overview]
Message-ID: <83wn5q8bk1.fsf@gnu.org> (raw)
In-Reply-To: <87zgam6yy6.fsf@nexoid.at> (emacs@nexoid.at)
> From: "Peter" <emacs@nexoid.at>
> Date: Fri, 13 Jan 2023 20:01:37 +0100
>
> I've been slowly sliding into using Emacs more and more like a Lisp OS,
> so one thing that has come up is directly reading data from pipes or
> special devices (like /dev/input/event...). I can do that fine by
> running `start-process' with `cat /dev/input/event..', however that
> seems a bit wasteful. Is there any way to *directly* open such a file
> and put a process-filter in front of it?
Did you try to use make-pipe-process?
> Semi-relatedly, is there any support for `fnctl' or `ioctl' in elisp, so
> that I could even *write* to those special devices?
Doesn't a simple 'write' (a.k.a. write-region in Emacs) work? If not,
can you show a recipe that fails with all the details?
next prev parent reply other threads:[~2023-01-13 19:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-13 19:01 Reading from pipes directly with a process-filter Peter
2023-01-13 19:43 ` Eli Zaretskii [this message]
2023-01-13 21:51 ` Peter
2023-01-14 6:56 ` Eli Zaretskii
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