From f2ddf390233edc67cd179b1931686219aa89f608 Mon Sep 17 00:00:00 2001
From: Marcel Holtmann <marcel@holtmann.org>
Date: Wed, 7 Nov 2012 10:51:01 +0100
Subject: [PATCH] tools: Add simple btattach utility

---
 .gitignore       |   1 +
 Makefile.tools   |   4 +-
 tools/btattach.c | 136 +++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 140 insertions(+), 1 deletion(-)
 create mode 100644 tools/btattach.c

diff --git a/.gitignore b/.gitignore
index 9bb49cf5b..0557d87a7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -80,6 +80,7 @@ test/uuidtest
 test/mpris-player
 test/sap_client.pyc
 unit/test-eir
+tools/btattach
 tools/btmgmt
 tools/btsnoop
 monitor/btmon
diff --git a/Makefile.tools b/Makefile.tools
index 881a36e85..dcddc474e 100644
--- a/Makefile.tools
+++ b/Makefile.tools
@@ -41,12 +41,14 @@ tools_ppporc_LDADD = lib/libbluetooth-private.la
 
 tools_hcieventmask_LDADD = lib/libbluetooth-private.la
 
-noinst_PROGRAMS += tools/btmgmt tools/btsnoop \
+noinst_PROGRAMS += tools/btmgmt tools/btattach tools/btsnoop \
 				monitor/btmon emulator/btvirt emulator/b1ee
 
 tools_btmgmt_SOURCES = tools/btmgmt.c src/glib-helper.c src/eir.c
 tools_btmgmt_LDADD = lib/libbluetooth-private.la @GLIB_LIBS@
 
+tools_btattach_SOURCES = tools/btattach.c
+
 tools_btsnoop_SOURCES = tools/btsnoop.c
 
 monitor_btmon_SOURCES = monitor/main.c monitor/bt.h \
diff --git a/tools/btattach.c b/tools/btattach.c
new file mode 100644
index 000000000..a69c49e46
--- /dev/null
+++ b/tools/btattach.c
@@ -0,0 +1,136 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2011-2012  Intel Corporation
+ *  Copyright (C) 2004-2010  Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+#include <sys/ioctl.h>
+#include <sys/poll.h>
+
+#include <bluetooth/bluetooth.h>
+#include <bluetooth/hci.h>
+#include <bluetooth/hci_lib.h>
+
+#include "hciattach.h"
+
+static int open_serial(const char *path)
+{
+	struct termios ti;
+	int fd, ldisc = N_HCI;
+
+	fd = open(path, O_RDWR | O_NOCTTY);
+	if (fd < 0) {
+		perror("Failed to open serial port");
+		return -1;
+	}
+
+	if (tcflush(fd, TCIOFLUSH) < 0) {
+		perror("Failed to flush serial port");
+		close(fd);
+		return -1;
+	}
+
+	/* Switch TTY to raw mode */
+	memset(&ti, 0, sizeof(ti));
+	cfmakeraw(&ti);
+
+	ti.c_cflag |= (B115200 | CLOCAL | CREAD);
+
+	if (tcsetattr(fd, TCSANOW, &ti) < 0) {
+		perror("Failed to set serial port settings");
+		close(fd);
+		return -1;
+	}
+
+	if (ioctl(fd, TIOCSETD, &ldisc) < 0) {
+		perror("Failed set serial line discipline");
+		close(fd);
+		return -1;
+	}
+
+	return fd;
+}
+
+static int attach_proto(const char *path, unsigned int proto,
+						unsigned int flags)
+{
+	int fd;
+
+	fd = open_serial(path);
+	if (fd < 0)
+		return -1;
+
+	if (ioctl(fd, HCIUARTSETFLAGS, flags) < 0) {
+		perror("Failed to set flags");
+		close(fd);
+		return -1;
+	}
+
+	if (ioctl(fd, HCIUARTSETPROTO, proto) < 0) {
+		perror("Failed to set protocol");
+		close(fd);
+		return -1;
+	}
+
+	return fd;
+}
+
+int main(int argc, char *argv[])
+{
+	struct pollfd p[5];
+	unsigned long flags = 0;
+	int fd, i, count = 0;
+
+	flags |= (1 << HCI_UART_RESET_ON_INIT);
+
+	fd = attach_proto("/dev/ttyS0", HCI_UART_H4, flags);
+	if (fd >= 0)
+		p[count++].fd = fd;
+
+	flags |= (1 << HCI_UART_CREATE_AMP);
+
+	fd = attach_proto("/dev/ttyS1", HCI_UART_H4, flags);
+	if (fd >= 0)
+		p[count++].fd = fd;
+
+	for (i = 0; i < count; i++)
+		p[i].events = POLLERR | POLLHUP;
+
+	while (1) {
+		poll(p, count, -1);
+        }
+
+	for (i = 0; i < count; i++)
+		close(p[i].fd);
+
+	return EXIT_SUCCESS;
+}
-- 
2.47.3