portstatus

Purpose

     Centralizes commands to control ports.

Description

     The pstart, penable, pshare,  pdelay, pdisable, and phold
     commands communicate  with the init command  (the process
     that controls loggers)  through the /etc/portstatus file.
     See  the pstart  and pdisable  commands in  AIX Operating
     System Commands  Reference for more information  on these
     commands.  The format of this file is:

          struct portstatus
             {  char ps_line[14];       /* device name */
                     char ps_stat;      /* current status */
                     char ps_rqst;      /* requested status */
          };

          #define ENABLE   01       /* spawn logger */
          #define DISABLE  02       /* kill logger */
          #define HOLD     04       /* spawn no new logger */
          #define SHARE    010
          #define DELAY    020

     The fields are explained as follows:

     ps_line   Names the special file for the port, tty01, for
               example.

     ps_rqst   Used by the pstart, penable, pshare, and pdelay
               commands to request changes  in the enabling of
               a port.

     ps_stat   Used by  the init  command to show  the current
               state of the port.

     The pstart,  penable, pshare,  and pdelay  commands, with
     the  -i flag  specified,  automatically initializes  this
     file.  If  this file  does not exist  or is  damaged, the
     init command cannot enable the ports properly.

File

     /etc/portstatus

Related Information

     The pstart and init commands in AIX Operating System Com-
     mands Reference.