- Integrated Peter Bengtsson's termios code. Thank you very much! I chose

to add it to libunix.a rather than keeping it in a separate libtermios.a
  library.


git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14971 87f5fb63-7c3d-0410-a384-fd976d0f7a62

library/termios_tcsendbreak.c

@@ -0,0 +1,108 @@
+/*
+ * $Id: termios_tcsendbreak.c,v 1.1 2005-06-04 10:46:21 obarthel Exp $
+ *
+ * :ts=4
+ *
+ * Portable ISO 'C' (1994) runtime library for the Amiga computer
+ * Copyright (c) 2002-2005 by Olaf Barthel <olsen@sourcery.han.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   - Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *
+ *   - Neither the name of Olaf Barthel nor the names of contributors
+ *     may be used to endorse or promote products derived from this
+ *     software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef	_TERMIOS_HEADERS_H
+#include "termios_headers.h"
+#endif /* _TERMIOS_HEADERS_H */
+
+/****************************************************************************/
+
+/*
+ * tcsendbreak() has a rather odd time specification.
+ * If duration is 0, it will send a BREAK for 0.25-0.5 seconds
+ * and if duration is non-zero...
+ * 	Linux asserts BREAK for N*duration where N is somewhere between 0.25 and 0.5 seconds.
+ * 	Solaris calls tcdrain() instead. (According to the manual)
+ * Let us try the Solaris way and see how it goes.
+ *
+ * If the file descriptor does not referr to a serial port, no action is needed.
+ */
+
+int
+tcsendbreak(int file_descriptor,int duration)
+{
+	int result = ERROR;
+	struct fd *fd;
+	struct termios *tios;
+
+	ENTER();
+
+	SHOWVALUE(file_descriptor);
+	SHOWVALUE(duration);
+
+	if(__check_abort_enabled)
+		__check_abort();
+
+	fd = __get_file_descriptor(file_descriptor);
+	if(fd == NULL || FLAG_IS_CLEAR(fd->fd_Flags,FDF_TERMIOS))
+	{
+		__set_errno(EBADF);
+		goto out;
+	}
+
+	assert( fd->fd_Aux != NULL );
+
+	tios = fd->fd_Aux;
+
+	switch(tios->type)
+	{
+		case TIOST_CONSOLE:
+
+			result = OK;
+			break;
+
+		case TIOST_SERIAL:
+
+			if(duration == 0)
+			{
+				/* TODO */
+				result = OK;
+			}
+			else
+			{
+				result = tcdrain(file_descriptor);
+			}
+
+			break;
+
+		default:
+
+			SHOWMSG("Invalid tios type in tcsendbreak.");
+			goto out;
+	}
+
+ out:
+
+	RETURN(result);
+	return(result);
+}