Date: Tue, 29 Sep 2009 14:58:37 +0200 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-current@freebsd.org Subject: Re: [PATCH] Shutdown cooloff feature Message-ID: <h9t09n$qhl$1@ger.gmane.org> In-Reply-To: <86ws3iexl3.fsf@ds4.des.no> References: <4AC141B0.4090705@delphij.net> <alpine.BSF.2.00.0909291245080.91454@fledge.watson.org> <h9st65$eni$1@ger.gmane.org> <86ws3iexl3.fsf@ds4.des.no>
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Dag-Erling Smørgrav wrote: > Ivan Voras <ivoras@freebsd.org> writes: >> There is difference between reboot and shutdown -r now??? > > Yes. This has always been the case. > >> Reading the man pages, it doesn't look so. What is the difference? >> Does shutdown -r call rc.d scripts with "stop"? > > Indirectly, yes: shutdown(8) sends either SIGINT, SIGUSR or SIGUSR2 to > init(8), which runs /etc/rc.shutdown before killing all remaining > processes and either reboot / halt or start a single-user shell, while > reboot(8) and halt(8) send SIGTSTP to init(8), then SIGTERM to every > other process in the system, then SIGKILL to any process that hasn't > responded to SIGTERM after somewhere between five and sixty seconds, > before issuing a reboot(2) syscall. Is this distinction between them useful (other than possibly speed of shutdown/reboot)?
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