1 files changed, 32 insertions, 0 deletions
diff --git a/sys/etc/prclose.x b/sys/etc/prclose.x
new file mode 100644
index 00000000..26e2702c
--- /dev/null
+++ b/sys/etc/prclose.x
@@ -0,0 +1,32 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<config.h>
+include	<syserr.h>
+include	<prstat.h>
+
+# PRCLOSE -- Close a connected subprocess.  Send the command "bye" to the
+# child to initiate process shutdown, then close the IPC channels and
+# wait for the child to terminate, returning the termination status to
+# our caller.  Note that process shutdown may take an arbitrarily long
+# time, depending on the number and nature of ONEXIT procedures posted by
+# tasks in the the child process.
+
+int procedure prclose (pid)
+
+int	pid			# process-id of child process
+
+int	child
+int	pr_findproc(), prclcpr()
+include	"prc.com"
+errchk	syserr
+
+begin
+	child = pr_findproc (pid)
+	if (child == ERR)
+	    call syserr (SYS_PRNOTFOUND)
+
+	if (pr_status[child] != P_DONE && pr_status[child] != P_DEAD)
+	    call putline (pr_outfd[child], "bye\n")
+
+	return (prclcpr (pid))
+end