tty: split tty_open to a separate file

Split the function tty_open() to a separate file.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

cdba-server.c

@@ -26,34 +26,6 @@ static const char *username;
 
 struct device *selected_device;
 
-int tty_open(const char *tty, struct termios *old)
-{
-	struct termios tios;
-	int ret;
-	int fd;
-
-	fd = open(tty, O_RDWR | O_NOCTTY | O_EXCL);
-	if (fd < 0)
-		err(1, "unable to open \"%s\"", tty);
-
-	ret = tcgetattr(fd, old);
-	if (ret < 0)
-		err(1, "unable to retrieve \"%s\" tios", tty);
-
-	memset(&tios, 0, sizeof(tios));
-	tios.c_cflag = B115200 | CS8 | CLOCAL | CREAD;
-	tios.c_iflag = IGNPAR;
-	tios.c_oflag = 0;
-
-	tcflush(fd, TCIFLUSH);
-
-	ret = tcsetattr(fd, TCSANOW, &tios);
-	if (ret < 0)
-		err(1, "unable to update \"%s\" tios", tty);
-
-	return fd;
-}
-
 static void fastboot_opened(struct fastboot *fb, void *data)
 {
 	const uint8_t one = 1;

cdba-server.h

@@ -6,8 +6,6 @@
 
 #include "cdba.h"
 
-int tty_open(const char *tty, struct termios *old);
-
 void cdba_send_buf(int type, size_t len, const void *buf);
 #define cdba_send(type) cdba_send_buf(type, 0, NULL)
 

console.c

@@ -13,6 +13,7 @@
 
 #include "cdba-server.h"
 #include "device.h"
+#include "tty.h"
 #include "watch.h"
 
 struct console {

drivers/alpaca.c

@@ -17,8 +17,8 @@
 #include <termios.h>
 #include <unistd.h>
 
-#include "cdba-server.h"
 #include "device.h"
+#include "tty.h"
 
 struct alpaca {
 	int alpaca_fd;

drivers/cdb_assist.c

@@ -17,9 +17,9 @@
 #include <termios.h>
 #include <unistd.h>
 
-#include "cdba-server.h"
 #include "device.h"
 #include "status.h"
+#include "tty.h"
 #include "watch.h"
 
 struct cdb_assist {

drivers/qcomlt_dbg.c

@@ -21,6 +21,7 @@
 #include "cdba-server.h"
 #include "device.h"
 #include "status.h"
+#include "tty.h"
 #include "watch.h"
 
 enum qcomlt_parse_state {

meson.build

@@ -89,7 +89,8 @@ server_srcs = ['cdba-server.c',
 	       'ppps.c',
                'status.c',
                'status-cmd.c',
-               'watch.c']
+               'watch.c',
+               'tty.c']
 
 build_server = true
 foreach d: server_deps

tty.c

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2016-2018, Linaro Ltd.
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <fcntl.h>
+#include <termios.h>
+#include <unistd.h>
+#include <err.h>
+#include <string.h>
+
+#include "tty.h"
+
+int tty_open(const char *tty, struct termios *old)
+{
+	struct termios tios;
+	int ret;
+	int fd;
+
+	fd = open(tty, O_RDWR | O_NOCTTY | O_EXCL);
+	if (fd < 0)
+		err(1, "unable to open \"%s\"", tty);
+
+	ret = tcgetattr(fd, old);
+	if (ret < 0)
+		err(1, "unable to retrieve \"%s\" tios", tty);
+
+	memset(&tios, 0, sizeof(tios));
+	tios.c_cflag = B115200 | CS8 | CLOCAL | CREAD;
+	tios.c_iflag = IGNPAR;
+	tios.c_oflag = 0;
+
+	tcflush(fd, TCIFLUSH);
+
+	ret = tcsetattr(fd, TCSANOW, &tios);
+	if (ret < 0)
+		err(1, "unable to update \"%s\" tios", tty);
+
+	return fd;
+}

tty.h

@@ -0,0 +1,7 @@
+#ifndef __TTY_H__
+#define __TTY_H__
+
+struct termios;
+int tty_open(const char *tty, struct termios *old);
+
+#endif