implemented tcsetattr()

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3175 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kernel/libroot/posix/termios/Jamfile

@@ -2,6 +2,7 @@ SubDir OBOS_TOP src kernel libroot posix termios ;
 
 KernelMergeObject posix_termios.o :
 	<$(SOURCE_GRIST)>termios.c
+	<$(SOURCE_GRIST)>tcsetattr.c
 	:
 	-fPIC -DPIC
 	;

src/kernel/libroot/posix/termios/tcsetattr.c

@@ -0,0 +1,38 @@
+/* 
+** Copyright 2003, Daniel Reinhold, [email protected]. All rights reserved.
+** Distributed under the terms of the OpenBeOS License.
+*/
+
+#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;
+	}
+}
+