From ba9ce9c13b42b93c5725544aceb2786089862562 Mon Sep 17 00:00:00 2001
From: vaibhavg20comp <vaibhavg20.comp@coep.ac.in>
Date: Tue, 7 Feb 2023 09:55:12 +0530
Subject: [PATCH] termios: Added cfsetspeed function.
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BSD extension to set both the input and output speed of a termios
structure.

Fixes #18220.

Change-Id: I8c4a06b4be4aa55b8ce35cb7f62552fc47a8e8d0
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6049
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
---
 headers/compatibility/bsd/termios.h | 30 +++++++++++++++++++++++++++++
 src/libs/bsd/Jamfile                |  1 +
 src/libs/bsd/termios.c              | 27 ++++++++++++++++++++++++++
 3 files changed, 58 insertions(+)
 create mode 100644 headers/compatibility/bsd/termios.h
 create mode 100644 src/libs/bsd/termios.c

diff --git a/headers/compatibility/bsd/termios.h b/headers/compatibility/bsd/termios.h
new file mode 100644
index 0000000000..a410989995
--- /dev/null
+++ b/headers/compatibility/bsd/termios.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2023 Haiku, Inc. All Rights Reserved.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef _BSD_TERMIOS_H_
+#define _BSD_TERMIOS_H_
+
+
+#include_next <termios.h>
+#include <features.h>
+
+
+#ifdef _DEFAULT_SOURCE
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern int cfsetspeed(struct termios *termios, speed_t speed);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif
+
+
+#endif  /* _BSD_TERMIOS_H_ */
diff --git a/src/libs/bsd/Jamfile b/src/libs/bsd/Jamfile
index 1d3c7d836e..c34154a01f 100644
--- a/src/libs/bsd/Jamfile
+++ b/src/libs/bsd/Jamfile
@@ -24,6 +24,7 @@ for architectureObject in [ MultiArchSubDirSetup ] {
 			signal.c
 			string.cpp
 			stringlist.c
+			termios.c
 			unvis.c
 			usershell.c
 			vis.c
diff --git a/src/libs/bsd/termios.c b/src/libs/bsd/termios.c
new file mode 100644
index 0000000000..1049aeea6a
--- /dev/null
+++ b/src/libs/bsd/termios.c
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2023, Haiku, inc.
+ *
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include <termios.h>
+
+
+int
+cfsetspeed(struct termios *termios, speed_t speed)
+{
+	/* Custom speed values are stored in c_ispeed and c_ospeed.
+	 * Standard values are inlined in c_cflag. */
+	if (speed > B31250) {
+		termios->c_cflag |= CBAUD;
+		termios->c_ispeed = speed;
+		termios->c_ospeed = speed;
+		return 0;
+	}
+
+	termios->c_cflag &= ~CBAUD;
+	termios->c_cflag |= speed;
+	return 0;
+}
+