Date: Fri, 19 May 2000 13:54:20 -0600 From: Warner Losh <imp@village.org> Cc: Cillian Sharkey <cns@psn.ie>, Doug White <dwhite@resnet.uoregon.edu>, hackers@FreeBSD.ORG Subject: Re: Post-shutdown hook for UPS shutdown? Message-ID: <200005191954.NAA03169@harmony.village.org> In-Reply-To: Your message of "Fri, 19 May 2000 13:53:04 MDT." <200005191953.NAA03130@harmony.village.org> References: <200005191953.NAA03130@harmony.village.org> <20000519180525.A29385@psn.ie> <20000519170026.A29241@psn.ie> <Pine.BSF.4.21.0005190929001.79434-100000@resnet.uoregon.edu>
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In message <200005191953.NAA03130@harmony.village.org> Warner Losh writes: : You'd like have to hack the kernel. There are hooks in the kernel to : execute very late in the game. I even think there is one to do things : just before halt that you could use to power things off completely. : If this is a UPS, and the signal is several serial characters, you'd : have to poll the serial port rather than using interrupts (and you : should disable interrupts just in case). Actually, forget what I said. Mike smith's way is much cleaner. Assuming that the batteries have enough juice in them to do the reboot. Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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