You can avoid this by spawn with set of SPAWN_SETGROUP. 

Thanks
Weijie

-----Original Message-----
From: ravi varma [mailto:community-noreply@qnx.com] 
Sent: April 23, 2009 10:13 AM
To: general-networking
Subject: Re: RE: Running PPPD daemon

Hi 

I am looking at starting pppd from an applicaition, so i am trying on
the spawn suggestion ..but when i gone throguh pppd docuemntation it
says .. 

" If you spawn pppd from another program and specify the nodetach or
updetach option, and if a signal is dropped on pppd while it's running a
connect or disconnect script, pppd raises the signal on the entire
process group, including the parent (i.e. the program that spawned
pppd). This could cause the parent to terminate unexpectedly "

through command line i am using 
pppd /dev/ser1 115200 ip1:ip2 debug updetach ... so 

1. when i spawncan i not use updetach ?
2. Also let me know the method/code through which i can sfaely terminate
from my parent process in case ppp communciation fails.

Thanks
Ravi 



> Or maybe "how do I automatically start it up" (as in putting the
command
> in something like rc.local).   
> 
> So many interpretations :>.
> 
> 	R.
> 
> -----Original Message-----
> From: Weijie Zhang [mailto:community-noreply@qnx.com] 
> Sent: Thursday, April 23, 2009 9:42 AM
> To: general-networking
> Subject: RE: Running PPPD daemon
> 
> I think his last sentence is saying he wants to know the utilities
that
> invoke pppd other than through command line. 
> 
> If you are running photon, there is a utility called "phlip". Simply
run
> the phlip, a networking configuration window pops up and at its
> connection page, you can add a new connection method and choose the
Type
> of Serial and the device and then do the rest accordingly. The phlip
> will invoke pppd according to your configuration. 
> 
> As you said you are testing the ppp communcation, I think you'd better
> contiune to use the way of command line as this way gives you the full
> control of configuration. 
> 
> Thanks.
> Weijie
> 
> -----Original Message-----
> From: Sean Boudreau [mailto:community-noreply@qnx.com]
> Sent: April 23, 2009 9:08 AM
> To: general-networking
> Subject: Re: Running PPPD daemon
> 
> On Thu, Apr 23, 2009 at 03:31:46AM -0400, ravi varma wrote:
> > Hi
> > 
> > RIght now i am testing PPP communication between two PC'S by doing
> > 
> > pppd /dev/ser1 115200 ip1:ip2 on command line ..or else keep the
same
> statement in string and call system(string) ..so that affect is same.
> > 
> > I want to know other approcahes of enabling PPPd Other than from
> command line and system command.
> 
> There's the spawn() family of libc calls.  I'm not sure I understand
the
> question...
> 
> -seanb
> 
> _______________________________________________
> General
> http://community.qnx.com/sf/go/post27870
> 
> 
> _______________________________________________
> General
> http://community.qnx.com/sf/go/post27877




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General
http://community.qnx.com/sf/go/post27883