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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <mach.h>
include <config.h>
include "ki.h"
# KOPCPR -- Open a connected subprocess.
procedure kopcpr (process, inchan, outchan, pid)
char process[ARB] # packed osfn of process executable
int inchan, outchan # receives process input output channels
int pid # receives process id
int server
int ki_connect(), ki_sendrcv(), ki_getchan()
include "kichan.com"
include "kii.com"
begin
server = ki_connect (process)
if (server == NULL) {
call strpak (p_sbuf[p_arg[1]], p_sbuf, SZ_SBUF)
call zopcpr (p_sbuf, inchan, outchan, pid)
} else {
if (ki_sendrcv (server, KI_ZOPCPR, 0) == ERR)
pid = ERR
else {
pid = p_arg[1]
inchan = p_arg[2]
outchan = p_arg[3]
}
}
# Allocate 3 channel descriptors, one for the each of the i/o
# channels and another for the PID. Save the channel descriptor
# numbers of the i/o channels in the status field of the PID
# descriptor to permit freeing the lot at disconnect time.
if (pid != ERR) {
pid = ki_getchan (server, pid)
inchan = ki_getchan (server, inchan)
outchan = ki_getchan (server, outchan)
k_status[pid] = inchan * MAX_CHANNELS + outchan
}
end
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