Date: Thu, 1 Aug 2019 22:37:42 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Freddie Cash <fjwcash@gmail.com> Cc: Warner Losh <imp@bsdimp.com>, "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net>, FreeBSD-Current <freebsd-current@freebsd.org>, freebsd-rc@freebsd.org Subject: Re: rc script: manual stop vs system shutdown Message-ID: <9b9ca0a6-5aee-74c7-2ac0-a70a81d72593@FreeBSD.org> In-Reply-To: <CAOjFWZ40Aivdod_BqYzOcjKZH6sBC2iYTAVre4ED%2BW1z906Eyg@mail.gmail.com> References: <2e50fb67-8a19-412b-19d2-14f5f20b61f8@FreeBSD.org> <201908011553.x71FrTCd060252@gndrsh.dnsmgr.net> <CANCZdfpuEuRKMPKTKJkzUg4mwugCV5iUxEEEV0yt%2BZTceZf1dg@mail.gmail.com> <d885a84a-d57c-03b4-72e5-9f37950cfa8e@FreeBSD.org> <CAOjFWZ40Aivdod_BqYzOcjKZH6sBC2iYTAVre4ED%2BW1z906Eyg@mail.gmail.com>
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On 01/08/2019 21:53, Freddie Cash wrote: > On Thu, Aug 1, 2019, 11:15 AM Andriy Gapon, <avg@freebsd.org > <mailto:avg@freebsd.org>> wrote: > > On 01/08/2019 19:12, Warner Losh wrote: > > > > > > On Thu, Aug 1, 2019, 10:53 AM Rodney W. Grimes > > <freebsd-rwg@gndrsh.dnsmgr.net > <mailto:freebsd-rwg@gndrsh.dnsmgr.net> > <mailto:freebsd-rwg@gndrsh.dnsmgr.net > <mailto:freebsd-rwg@gndrsh.dnsmgr.net>>> > > wrote: > > > > > > > > Is it possible in an rc script to distinguish between a > manual stop > > > (e.g., service foo stop) and a stop during a system shutdown > (via > > > rc.shutdown) ? > > > Are there any marker variables for that? > > > Or something in the global system state? > > > > Not that I can think of, but I like this idea, > > I am sure that use cases exist. > > > > > > What is the use case that needs to disambiguate the two cases... > > I have one use case in mind and it's a truly special case. > I want rc.d/watchdogd to gracefully stop watchdogd and to disable the > watchdog timer when the stop action is requested manually. And I want > it to stop watchdogd and set the watchdog timer to a special shutdown > timeout during the shutdown. If the special timeout is configured, of > course. > > > A horribly hackish workaround could be to do a "pgrep shutdown" and > "pgrep reboot" and "pgrep halt" in the stop function of the RC script. > If one of those those processes exist, then a system shutdown/reboot is > in progress. > > Not elegant, but could be workable until something nicer is added. I think that shutdown by default sends a signal to init and exits. It's init that kicks off rc.shutdown. -- Andriy Gapon
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