<div dir="ltr">You mean in the getty-generator.c ?<div> </div></div><div class="gmail_extra"> <div class="gmail_quote">On Mon, Apr 20, 2015 at 9:14 AM, Andrei Borzenkov <<a href="mailto:arvidjaar@gmail.com" target="_blank">arvidjaar@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">В Mon, 20 Apr 2015 09:09:09 +0530 Praveen kumar R <<a href="mailto:praveenrgowda@gmail.com">praveenrgowda@gmail.com</a>> пишет: <div><div class="h5">> This is the snippet of the code in the systemV init system that controls > the serial console login > depending on the token > > TOKENEXIST=`grep "TOKEN=" /proc/cmdline` > TOKEN=0 > if [ "X$TOKENEXIST" != "X" ]; then > #If token is pass as a command line arg, use it. > TOKEN=`sed 's/.*TOKEN=//; s/ .*//' /proc/cmdline` > fi > > TOKENOVERRIDE=`grep "TOKENOVERRIDE=" /proc/cmdline` > if [ "X$TOKENOVERRIDE" != "X" ]; then > #If token is pass as a command line arg, use it. > OVERRIDE=`sed 's/.*TOKENOVERRIDE=//; s/ .*//' /proc/cmdline` > let "TOKEN = $TOKEN & $OVERRIDE" > fi > > echo "TOKEN = $TOKEN" > > let "CONSOLE_LOGIN = $TOKEN & 512" > if [ $CONSOLE_LOGIN -ne 0 ]; then > echo "[`eval $uptime`]: Begin Console Access" > /etc/console_login & > echo "eCM console is enabled" > export ENABLE_ECM_CONSOLE=y > else > echo "[`eval $uptime`]: Token doesn't allow console access" > export ENABLE_ECM_CONSOLE=n > fi > > > > I am trying to implement the same in the sytemd init system. > </div></div>The straightforward approach is to put this code in generator that parses command line. It can mask standard console service and create unit for your console. <div class="HOEnZb"><div class="h5"> > > On Sun, Apr 19, 2015 at 11:48 AM, Andrei Borzenkov <<a href="mailto:arvidjaar@gmail.com">arvidjaar@gmail.com</a>> > wrote: > > > В Sat, 18 Apr 2015 19:54:50 +0530 > > Praveen kumar R <<a href="mailto:praveenrgowda@gmail.com">praveenrgowda@gmail.com</a>> пишет: > > > > > Yes it's a kernel command line arg, it is board specific token introduced > > > to control the serial console. > > > if defined serial console should not be enabled. > > > > > > > Sorry I do not understand this sentence. "define" what? Please give > > exact example of kernel command line and explain what behavior you > > expect in this case. > > > > > we have this in place for other system initializing system - sytemV , > > where > > > depending > > > > > > On Fri, Apr 17, 2015 at 4:24 PM, Lennart Poettering < > > <a href="mailto:lennart@poettering.net">lennart@poettering.net</a> > > > <javascript:_e(%7B%7D,'cvml','<a href="mailto:lennart@poettering.net">lennart@poettering.net</a>');>> wrote: > > > > > > > On Fri, 17.04.15 15:54, Praveen kumar R (<a href="mailto:praveenrgowda@gmail.com">praveenrgowda@gmail.com</a> > > > > <javascript:_e(%7B%7D,'cvml','<a href="mailto:praveenrgowda@gmail.com">praveenrgowda@gmail.com</a>');>) wrote: > > > > > > > > > I have a token passed on by command line argument on which I need to > > > > decide > > > > > to start the serial > > > > > > > > On which command line? Kernel command line? What kind of "token"? > > > > > > > > > console or not. I plan to tweak the getty*ttyS0.service and add the > > > > > script which validates the token and starts the console. > > > > > > > > > > Is this the right approach or is there any better way of handling it > > ?? > > > > > > > > To get a login getty on the serial port its sufficient to add > > > > console=ttyS0... to the kernel cmdline. systemd automatically starts a > > > > serial getty automatically on the first terminal the kernel console is > > > > pointing to. > > > > > > > > Lennart > > > > > > > > -- > > > > Lennart Poettering, Red Hat > > > > > > > > </div></div></blockquote></div> </div>