linux-kernel - Re: [RFC PATCH 0/8] signals: Support more than 64 signals

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Message-ID: <20220519122746.GA3904@localhost>
Date:   Thu, 19 May 2022 14:27:46 +0200
From:   Pavel Machek <pavel@....cz>
To:     Arseny Maslennikov <ar@...msu.ru>
Cc:     Walt Drummond <walt@...mmond.us>, Theodore Ts'o <tytso@....edu>,
        "Eric W. Biederman" <ebiederm@...ssion.com>, aacraid@...rosemi.com,
        viro@...iv.linux.org.uk, anna.schumaker@...app.com, arnd@...db.de,
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Subject: Re: [RFC PATCH 0/8] signals: Support more than 64 signals

Hi!

> > The only standard tools that support SIGINFO are sleep, dd and ping,
> > (and kill, for obvious reasons) so it's not like there's a vast hole
> > in the tooling or something, nor is there a large legacy software base
> > just waiting for SIGINFO to appear.   So while I very much enjoyed
> > figuring out how to make SIGINFO work ...
> 
> As far as I recall, GNU make on *BSD does support SIGINFO (Not a
> standard tool, but obviously an established one).
> 
> The developers of strace have expressed interest in SIGINFO support
> to print tracer status messages (unfortunately, not on a public list).
> Computational software can use this instead of stderr progress spam, if
> run in an interactive fashion on a terminal, as it frequently is. There
> is a user base, it's just not very vocal on kernel lists. :)

And often it would be useful if cp supported this. Yes, this
is feature I'd like to see.

BR,							Pavel

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