Date: Mon, 04 Feb 2008 14:37:31 +0800 From: Ganbold <ganbold@micom.mng.net> To: Jeremy Chadwick <koitsu@FreeBSD.org> Cc: FreeBSD Stable Mailing List <freebsd-stable@freebsd.org> Subject: Re: /dev/cuad0: Device busy Message-ID: <47A6B2AB.2060308@micom.mng.net> In-Reply-To: <20080204063023.GA91789@eos.sc1.parodius.com> References: <47A69A66.2080109@micom.mng.net> <20080204063023.GA91789@eos.sc1.parodius.com>
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Jeremy Chadwick wrote: > On Mon, Feb 04, 2008 at 12:53:58PM +0800, Ganbold wrote: > >> Hi, >> >> I'm trying to use serial port but the system says device busy. >> >> daemon# cu -l /dev/cuad0 -s 9600 >> /dev/cuad0: Device busy >> link down >> > > Does the same happen if you do `cu -l ttyd0 -s 9600`? > It works and fstat shows: daemon# fstat /dev/cuad0 USER CMD PID FD MOUNT INUM MODE SZ|DV R/W NAME daemon# fstat /dev/ttyd0 USER CMD PID FD MOUNT INUM MODE SZ|DV R/W NAME root cu 5574 3 /dev 41 crw------- ttyd0 rw /dev/ttyd0 root cu 5573 3 /dev 41 crw------- ttyd0 rw /dev/ttyd0 daemon# Is it expected behaviour? thanks, Ganbold > >> How to check whether something is using serial port? >> Any idea? >> > > fstat should help here. > > -- Success is in the minds of Fools. -- William Wrenshaw, 1578
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