hurf@batcomputer.TN.CORNELL.EDU (Hurf Sheldon) (05/21/86)
In the documentation for the /etc/ttys file there is an option of declaring a tty shared. Does that allow getty to sit active on a port and allow using the port as an out device as well? What I want to accomplish is to have a dialout line also be a dial in line with login prompt, etc. Unfortunately it isn't obvious to me how to do it. My attempts have resulted in the login prompt looping back in on me as any time anything comes in the port getty says 'login'. Is there an elegant way or must one write a script to alter ttys, kill the sucker, use it , reverse the process etc? I know I'm slow, but I try to be smooth to make up for it. hurf sheldon plasma studies cornell university hurf@ionvax.tn.cornell.edu
avolio@decuac.DEC.COM (Frederick M. Avolio) (05/23/86)
In article <328@batcomputer.TN.CORNELL.EDU>, hurf@batcomputer.TN.CORNELL.EDU (Hurf Sheldon) writes: > In the documentation for the /etc/ttys file there is an option > of declaring a tty shared. Does that allow getty to sit active on > a port and allow using the port as an out device as well? > What I want to accomplish is to have a dialout line also be a dial > in line with login prompt, etc. ... That is exactly what it is made for -- to allow dialin and dialout on the same line. With your Ultrix-{32,32m} V1.2 system, you do the following: 1. Make sure the port has modem control on it (via the flags in the conf file for the system) and rebuild vmunix if you changed anything. 2. Edit /etc/ttys so that the line is marked `shared on' (such as this: ttyd0 "/etc/getty d1200" dialup on modem shared 3. Make sure the node in /dev is owned by uucp. 4. kill -1 1 This should allow you to dialout on the same line as the getty is running. The getty stays there but is locked out of reading from or writing to the device while it is used for dialout. It works for me... -- Fred @ DEC Ultrix Applications Center INET: avolio@decuac.DEC.COM * Fight the Fight * UUCP: {decvax,seismo,cbosgd}!decuac!avolio * Rescue the Unborn *