From 2627eeff81a3b29c06fa0b78479b0de5f30494f6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Axel=20D=C3=B6rfler?= <axeld@pinc-software.de>
Date: Thu, 23 Sep 2004 23:45:03 +0000
Subject: [PATCH] Joined the former termios/termios.c and termios/tcsetattr.c
 together to termios.c. Added it to the build.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9048 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/kernel/libroot/posix/Jamfile   |   1 +
 src/kernel/libroot/posix/termios.c | 139 +++++++++++++++++++++++++++++
 2 files changed, 140 insertions(+)
 create mode 100644 src/kernel/libroot/posix/termios.c

diff --git a/src/kernel/libroot/posix/Jamfile b/src/kernel/libroot/posix/Jamfile
index 86360746f7..75882fb3af 100644
--- a/src/kernel/libroot/posix/Jamfile
+++ b/src/kernel/libroot/posix/Jamfile
@@ -14,6 +14,7 @@ KernelMergeObject posix_main.o :
  	poll.c
  	pwd.c
  	syslog.cpp
+ 	termios.c
  	utime.c
  	: -fPIC -DPIC
 	;
diff --git a/src/kernel/libroot/posix/termios.c b/src/kernel/libroot/posix/termios.c
new file mode 100644
index 0000000000..12b3079b38
--- /dev/null
+++ b/src/kernel/libroot/posix/termios.c
@@ -0,0 +1,139 @@
+/* 
+** Copyright 2003, Daniel Reinhold, danielre@users.sf.net. All rights reserved.
+** Distributed under the terms of the OpenBeOS License.
+*/
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <termios.h>
+
+
+/*
+ * tcsetattr - set the attributes for the tty device at fd
+ *             (using the structure in the last arg for the values)
+ */
+int
+tcsetattr(int fd, int opt, const struct termios *tp)
+{
+	switch (opt) {
+		case TCSANOW:
+			// set the attributes immediately
+			return ioctl(fd, TCSETA, tp);
+		
+		case TCSADRAIN:
+			// wait for ouput to finish before setting the attributes
+			return ioctl(fd, TCSETAW, tp);
+		
+		case TCSAFLUSH:
+			// wait for ouput to finish and then flush the input buffer
+			// before setting the attributes
+			return ioctl(fd, TCSETAF, tp);
+		
+		default:
+			// no other valid options
+			errno = EINVAL;
+			return -1;
+	}
+}
+
+
+/* tcdrain - wait for all output to be transmitted */
+int
+tcdrain(int fd)
+{
+	/* Some termios implementations have a TIOCDRAIN command
+	 * expressly for this purpose (e.g. ioctl(fd, TIOCDRAIN, 0).
+	 * However, the BeOS implementation adheres to another
+	 * interface which uses a non-zero last parameter to the
+	 * TCSBRK ioctl to signify this functionality.
+	 */
+	return ioctl(fd, TCSBRK, 1);
+}
+
+
+/* tcflow - suspend or restart transmission */
+int
+tcflow(int fd, int action)
+{
+	/* action will be one of the following:
+	 *   TCIOFF -  input off (stops input)
+	 *   TCION  -  input on  (restart input)
+	 *   TCOOFF - output off (stops output)
+	 *   TCOON  - output on  (restart output)
+	 */
+	return ioctl(fd, TCXONC, action);
+}
+
+
+/* tcflush - flush all pending data (input or output) */
+int
+tcflush(int fd, int queue_selector)
+{
+	return ioctl(fd, TCFLSH, queue_selector);
+}
+
+
+/* tcsendbreak - send zero bits for the specified duration */
+int
+tcsendbreak(int fd, int duration)
+{	
+	if (duration == 0)
+		// Posix spec says this should take ~ 0.25 to 0.5 seconds
+		return ioctl(fd, TCSBRK, 0);
+	
+	/* Posix does not specify how long the transmission time
+	 * should last if 'duration' is non-zero -- i.e. it is up
+	 * to each implementation to decide what to do...
+	 *
+	 * For simplicity, here is it assumed that a positive duration
+	 * of N will mean "N time intervals" where each interval lasts
+	 * from 0.25 to 0.5 seconds. A negative duration will be treated
+	 * as an error.
+	 */
+	if (duration < 0) {
+		errno = EINVAL;
+		return -1;
+	}
+	
+	while (duration-- > 0)
+		if (ioctl(fd, TCSBRK, 0) < 0)
+			return -1;
+	
+	return 0;
+}
+
+
+
+/*
+ * The following four "speed control" functions are not supported
+ * in the BeOS. But the interface is still part of the Posix
+ * terminal IO specification, so they are implemented here as
+ * stub functions for basic compliance.
+ */
+
+speed_t
+cfgetispeed(const struct termios *term)
+{
+	return (speed_t)0;
+}
+
+int
+cfsetispeed( struct termios *term, speed_t speed)
+{
+	return 0;
+}
+
+speed_t
+cfgetospeed(const struct termios *term)
+{
+	return (speed_t)0;
+}
+
+int
+cfsetospeed( struct termios *term, speed_t speed)
+{
+	return 0;
+}
+