From: "Laurent Bercot" <ska-supervision@skarnet.org>
To: "Casper Ti. Vector" <caspervector@gmail.com>,
supervision@list.skarnet.org
Subject: Re: s6-supervise: use of nosetsid
Date: Thu, 03 Dec 2020 17:21:44 +0000 [thread overview]
Message-ID: <emf9a804ac-3ccb-4d15-82fc-f9563c98fdac@elzian> (raw)
In-Reply-To: <X8kbtfETM/jWuG1O@caspervector>
>dcron crashes without it, which is why [1] exists. The log says
>`setpgid: Operation not permitted'. I have not investigated further.
The problem happens here:
https://github.com/dubiousjim/dcron/blob/master/main.c#L272
dcron assumes that it's not a session leader when run in the
foreground.
This is a programming error that should be reported and fixed; if
setpgid(0, 0) fails with EPERM, it just means that the process is
already a session leader, and the program should simply keep running
instead of exiting.
So, not a valid reason. ;)
As a workaround, you can avoid nosetsid by just running dcrond under
execline's 'trap', or a shell, or basically any program that will
just forward signals to it.
--
Laurent
next prev parent reply other threads:[~2020-12-03 17:21 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-03 16:46 Laurent Bercot
2020-12-03 17:09 ` Casper Ti. Vector
[not found] ` <X8kbtfETM/jWuG1O@caspervector>
2020-12-03 17:21 ` Laurent Bercot [this message]
2020-12-04 6:45 ` Casper Ti. Vector
2020-12-03 19:53 ` Steve Litt
2020-12-03 19:56 ` Guillermo
2020-12-03 21:34 ` Laurent Bercot
2020-12-04 1:46 ` Guillermo
2020-12-04 6:29 ` Laurent Bercot
2020-12-03 21:25 ` eric vidal
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