Date: Mon, 14 Aug 2006 14:49:10 +0800 From: "Intron" <mag@intron.ac> To: des@des.no Cc: freebsd-hackers@freebsd.org, Sean Bryant <bryants@gmail.com> Subject: Re: Questions about devices and input. Message-ID: <courier.44E01CE6.0000088A@intron.ac> In-Reply-To: <86bqqnyhlm.fsf@xps.des.no> References: <f6791cc60608131508x6e6c77d3i65e4b503be9eeee4@mail.gmail.com> <86bqqnyhlm.fsf@xps.des.no>
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Dag-Erling [iso-8859-1] Smo/rgrav wrote: > "Sean Bryant" <bryants@gmail.com> writes: >> I'm writing some cd buring software using burncd as a reference. I was >> wondering if its possible to detect opening and closing of the doors. > > Unfortunately, no. The drive may not even have a door. > > DES > -- > Dag-Erling Smo/rgrav - des@des.no > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" Mr. smo/rgrav loves playing joke very much. But most of CD/DVD drives have a door, though generally speaking, software cannot detect the open/close status of a door directly. However, software can command the drive to open/close its door. please see the source of cdcontrol(1): /usr/src/usr.sbin/cdcontrol/cdcontrol.c In the function "int run (int cmd, char *arg)": case CMD_CLOSE: ... case CMD_EJECT: ... ------------------------------------------------------------------------ From Beijing, China
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