Date: Thu, 3 Feb 2011 21:29:53 +0800 From: Yue Wu <vanopen@gmail.com> To: freebsd-stable@freebsd.org Subject: Re: Is /etc/rc.conf scriptable? Message-ID: <20110203132953.GA47155@fbsd.t60.cpu> In-Reply-To: <20110201125710.GA81081@psconsult.nl> References: <20110201123506.GA97242@fbsd.t60.cpu> <20110201125710.GA81081@psconsult.nl>
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Sorry for late reply. Thank you for all kindly and useful help! On Tue, Feb 01, 2011 at 01:57:10PM +0100, Paul Schenkeveld wrote: > On Tue, Feb 01, 2011 at 08:35:06PM +0800, Yue Wu wrote: > > Hi list, > > > > I'm trying to do something to make rc.conf can act conditionally > > > > What I want is: > > > > 1. List the wireless access points, > > > > grep if there is one which bssid is 'bb:bb:bb:bb:bb:bb', > > > > if there is, then set ifconfig_wlan0 to the value: > > > > "inet 192.168.1.111 netmask 255.255.255.0 WPA" > > > > 2. check if bitlbee has been installed, if so, then let bitlbee > > service start. > > > > > > So I tried with following settings in rc.conf, but all of them failed, > > i.e., the networking can't be connected and bitlbee service doesn't > > run. > > > > /etc/rc.conf > > > > if ifconfig wlan0 list scan 2>/dev/null | grep -q 'bb:bb:bb:bb:bb:bb' >/dev/null 2>&1; then > > ifconfig_wlan0="inet 192.168.1.111 netmask 255.255.255.0 WPA" > > fi > > if [ -x /usr/local/sbin/bitlbee ]; then > > bitlbee_enable="YES" > > fi > > /etc/rc.conf is scriptable (unless you are also using a dashboard or > other software that wants to interpret/update /etc/rc.conf). > > Your problem here is that rc.conf is read (and executed) before wlan0 > gets created. After creation of an interface, /etc/start_if.<interface> > is called, perhaps you could use that but keep in mind it's run just > after creation of the interface so if you use it for wlan0 and need the > output of a station scan you should use ifconfig wlan0 scan instead of > ifconfig wlan0 list scan. This may take some time during which your > boot process is stalled. Thanks for detailed explanation, I get it, I think I should learn more to get familiar with BSD's boot process before trying to do such things by myself. > > > My question is, how to achieve what I want? The simpler, the better :) > > Otherwise, perhaps devd could help you to run your script asynchronously > after wlan0 is created. > -- Regards, Yue Wu Key Laboratory of Modern Chinese Medicines Department of Traditional Chinese Medicine China Pharmaceutical University No.24, Tongjia Xiang Street, Nanjing 210009, China
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