From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thilo Riessner Date: Thu, 07 Sep 2006 14:44:45 +0000 Subject: Re: serial device access from welcome script Message-Id: <200609071644.45510.thilo@riessner.de> List-Id: References: <200609061445.20406.thilo@riessner.de> In-Reply-To: <200609061445.20406.thilo@riessner.de> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ppp@vger.kernel.org Am Mittwoch, 6. September 2006 23:53 schrieben Sie: > Thilo Riessner writes: > > >From a program called by the welcome script which tries to access the > > > serial > > > > port (in this case /dev/ttyI0) I get the errormessage: > > Port or socket open error! > > I guess, that the serial port is blocked by the pppd. > > Is there any possibility to access the serial port nevertheless? > > You shouldn't be trying to access the port directly. Instead, when > the "welcome" script runs, your script's standard input and standard > output are connected directly to the tty. > > You should be able to use 'read' and 'echo' (or whatever your > scripting language supports) without having to open anything. > > This is true for "connect", "disconnect", "init", and "pty" as well. Thanks for your hint, but I have the problem, that the program (which is a binary program) I am running out of my welcome script (which is a bash script) does not support the usage of stdin and stdout, but it demands the usage of a device for reading and writing. Is there a trick that I could use in the welcome script to redirect stdin and stdout to a "device" and use that device in the program, which is called from the welcome script.