Date: Thu, 01 Aug 2019 13:51:29 -0600 From: Ian Lepore <ian@freebsd.org> To: Andriy Gapon <avg@FreeBSD.org>, Warner Losh <imp@bsdimp.com>, "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net> Cc: FreeBSD Current <freebsd-current@freebsd.org>, freebsd-rc@freebsd.org Subject: Re: rc script: manual stop vs system shutdown Message-ID: <c8c862a7ee8998ef44078280f35f0a29354868ff.camel@freebsd.org> In-Reply-To: <d885a84a-d57c-03b4-72e5-9f37950cfa8e@FreeBSD.org> 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>
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On Thu, 2019-08-01 at 21:14 +0300, Andriy Gapon 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>> > > 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. > The shutdown timeout is already supported: you just set '-x <timeout>' in watchdogd_flags in rc.conf; no changes to the rc.d script needed. I think probably you don't even need the first part of what you want. The -x arg covers you in the reboot case; most people probably won't use it. But if you are using it, and you want to truly kill the dog, you would just do "watchdog -t 0" after "service watchdogd stop". If you really felt the need to cover that with a single service command, then how about using "service watchdogd cancel" where the cancel verb does the -t 0 after killing the daemon? -- Ian
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