Initial commit

1 files changed, 47 insertions, 0 deletions

diff --git a/sys/ki/kopcpr.x b/sys/ki/kopcpr.x
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+++ b/sys/ki/kopcpr.x
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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