From 119bced0fd63d7651a27cdf2f738b7cb4b0d9c10 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Fri, 22 May 1998 14:51:11 +0000
Subject: Added tcdrain(), cfgetospeed(0, cfsetospeed(), cfgetispeed(), and
 cfsetispeed().

---
 cpukit/libcsupport/src/tcdrain.c | 26 ++++++++++++++++++++++++++
 cpukit/libcsupport/src/termios.c | 30 ++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+)
 create mode 100644 cpukit/libcsupport/src/tcdrain.c

(limited to 'cpukit')

diff --git a/cpukit/libcsupport/src/tcdrain.c b/cpukit/libcsupport/src/tcdrain.c
new file mode 100644
index 0000000000..585871cc90
--- /dev/null
+++ b/cpukit/libcsupport/src/tcdrain.c
@@ -0,0 +1,26 @@
+/*
+ *  This file contains the RTEMS implementation of the POSIX API
+ *  routines tcdrain.
+ *
+ *  $Id$
+ *
+ */
+
+#include <rtems.h>
+#if defined(RTEMS_NEWLIB)
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <termios.h>
+
+#include "internal.h"
+#include "libio.h"
+
+int
+tcdrain(int fd)
+{
+	return __rtems_ioctl(fd,RTEMS_IO_TCDRAIN,0);
+}
+
+#endif
diff --git a/cpukit/libcsupport/src/termios.c b/cpukit/libcsupport/src/termios.c
index b2d1bb1499..648e2c0c3e 100644
--- a/cpukit/libcsupport/src/termios.c
+++ b/cpukit/libcsupport/src/termios.c
@@ -297,6 +297,31 @@ rtems_termios_open (
 	return RTEMS_SUCCESSFUL;
 }
 
+/*
+ * Drain output queue
+ */
+static void
+drainOutput (struct rtems_termios_tty *tty)
+{
+	rtems_interrupt_level level;
+	rtems_status_code sc;
+
+	if (tty->device.outputUsesInterrupts) {
+		rtems_interrupt_disable (level);
+		while (tty->rawOutBufTail != tty->rawOutBufHead) {
+			tty->rawOutBufState = rob_wait;
+			rtems_interrupt_enable (level);
+			sc = rtems_semaphore_obtain (tty->rawOutBufSemaphore,
+							RTEMS_WAIT,
+							RTEMS_NO_TIMEOUT);
+			if (sc != RTEMS_SUCCESSFUL)
+				rtems_fatal_error_occurred (sc);
+			rtems_interrupt_disable (level);
+		}
+		rtems_interrupt_enable (level);
+	}
+}
+
 rtems_status_code
 rtems_termios_close (void *arg)
 {
@@ -308,6 +333,7 @@ rtems_termios_close (void *arg)
 	if (sc != RTEMS_SUCCESSFUL)
 		rtems_fatal_error_occurred (sc);
 	if (--tty->refcount == 0) {
+		drainOutput (tty);
 		if (tty->device.lastClose)
 			 (*tty->device.lastClose)(tty->major, tty->minor, arg);
 		if (tty->forw == NULL)
@@ -384,6 +410,10 @@ rtems_termios_ioctl (void *arg)
 		if (tty->device.setAttributes)
 			(*tty->device.setAttributes)(tty->minor, &tty->termios);
 		break;
+
+	case RTEMS_IO_TCDRAIN:
+		drainOutput (tty);
+		break;
 	}
 	rtems_semaphore_release (tty->osem);
 	args->ioctl_return = sc;
-- 
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