New Serial Manager API:
SerialManager: provides access to serial ports
SerialPort: for reading and writing data to and from serial ports
IO with both array based and direct ByteBuffers is supported.
Accessing serial ports requires android.permission.SERIAL_PORT permission
Each platform must configure list of supported serial ports in the
config_serialPorts resource overlay
(this is needed to prevent apps from accidentally accessing the bluetooth
or other system UARTs).
In addition, the platform uevent.rc file must set the owner to the
/dev/tty* files to "system" so the framework can access the port.
Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/Android.mk b/Android.mk
index 5acfb86..bda3d1d 100644
--- a/Android.mk
+++ b/Android.mk
@@ -110,6 +110,7 @@
core/java/android/content/pm/IPackageMoveObserver.aidl \
core/java/android/content/pm/IPackageStatsObserver.aidl \
core/java/android/database/IContentObserver.aidl \
+ core/java/android/hardware/ISerialManager.aidl \
core/java/android/hardware/usb/IUsbManager.aidl \
core/java/android/net/IConnectivityManager.aidl \
core/java/android/net/INetworkManagementEventObserver.aidl \
diff --git a/core/java/android/app/ContextImpl.java b/core/java/android/app/ContextImpl.java
index db5113e..37900b6 100644
--- a/core/java/android/app/ContextImpl.java
+++ b/core/java/android/app/ContextImpl.java
@@ -42,7 +42,9 @@
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.graphics.Bitmap;
import android.graphics.drawable.Drawable;
+import android.hardware.ISerialManager;
import android.hardware.SensorManager;
+import android.hardware.SerialManager;
import android.hardware.usb.IUsbManager;
import android.hardware.usb.UsbManager;
import android.location.CountryDetector;
@@ -428,6 +430,12 @@
return new UsbManager(ctx, IUsbManager.Stub.asInterface(b));
}});
+ registerService(SERIAL_SERVICE, new ServiceFetcher() {
+ public Object createService(ContextImpl ctx) {
+ IBinder b = ServiceManager.getService(SERIAL_SERVICE);
+ return new SerialManager(ctx, ISerialManager.Stub.asInterface(b));
+ }});
+
registerService(VIBRATOR_SERVICE, new ServiceFetcher() {
public Object createService(ContextImpl ctx) {
return new Vibrator();
diff --git a/core/java/android/content/Context.java b/core/java/android/content/Context.java
index bfbd0ac..3d4e354 100644
--- a/core/java/android/content/Context.java
+++ b/core/java/android/content/Context.java
@@ -1789,6 +1789,17 @@
public static final String USB_SERVICE = "usb";
/**
+ * Use with {@link #getSystemService} to retrieve a {@link
+ * android.hardware.SerialManager} for access to serial ports.
+ *
+ * @see #getSystemService
+ * @see android.harware.SerialManager
+ *
+ * @hide
+ */
+ public static final String SERIAL_SERVICE = "serial";
+
+ /**
* Determine whether the given permission is allowed for a particular
* process and user ID running in the system.
*
diff --git a/core/java/android/hardware/ISerialManager.aidl b/core/java/android/hardware/ISerialManager.aidl
new file mode 100644
index 0000000..74d30f7
--- /dev/null
+++ b/core/java/android/hardware/ISerialManager.aidl
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware;
+
+import android.os.ParcelFileDescriptor;
+
+/** @hide */
+interface ISerialManager
+{
+ /* Returns a list of all available serial ports */
+ String[] getSerialPorts();
+
+ /* Returns a file descriptor for the serial port. */
+ ParcelFileDescriptor openSerialPort(String name);
+}
diff --git a/core/java/android/hardware/SerialManager.java b/core/java/android/hardware/SerialManager.java
new file mode 100644
index 0000000..c5e1c2b
--- /dev/null
+++ b/core/java/android/hardware/SerialManager.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+package android.hardware;
+
+import android.app.PendingIntent;
+import android.content.Context;
+import android.os.Bundle;
+import android.os.ParcelFileDescriptor;
+import android.os.RemoteException;
+import android.os.SystemProperties;
+import android.util.Log;
+
+import java.io.IOException;
+import java.util.HashMap;
+
+/**
+ * @hide
+ */
+public class SerialManager {
+ private static final String TAG = "SerialManager";
+
+ private final Context mContext;
+ private final ISerialManager mService;
+
+ /**
+ * {@hide}
+ */
+ public SerialManager(Context context, ISerialManager service) {
+ mContext = context;
+ mService = service;
+ }
+
+ /**
+ * Returns a string array containing the names of available serial ports
+ *
+ * @return names of available serial ports
+ */
+ public String[] getSerialPorts() {
+ try {
+ return mService.getSerialPorts();
+ } catch (RemoteException e) {
+ Log.e(TAG, "RemoteException in getSerialPorts", e);
+ return null;
+ }
+ }
+
+ /**
+ * Opens and returns the {@link android.hardware.SerialPort} with the given name.
+ * The speed of the serial port must be one of:
+ * 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600,
+ * 19200, 38400, 57600, 115200, 230400, 460800, 500000, 576000, 921600, 1000000, 1152000,
+ * 1500000, 2000000, 2500000, 3000000, 3500000 or 4000000
+ *
+ * @param name of the serial port
+ * @param speed at which to open the serial port
+ * @return the serial port
+ */
+ public SerialPort openSerialPort(String name, int speed) throws IOException {
+ try {
+ ParcelFileDescriptor pfd = mService.openSerialPort(name);
+ if (pfd != null) {
+ SerialPort port = new SerialPort(name);
+ port.open(pfd, speed);
+ return port;
+ } else {
+ throw new IOException("Could not open serial port " + name);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "exception in UsbManager.openDevice", e);
+ }
+ return null;
+ }
+}
diff --git a/core/java/android/hardware/SerialPort.java b/core/java/android/hardware/SerialPort.java
new file mode 100644
index 0000000..0889790
--- /dev/null
+++ b/core/java/android/hardware/SerialPort.java
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware;
+
+import android.os.ParcelFileDescriptor;
+import android.util.Log;
+
+import java.io.FileDescriptor;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.InputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+import java.nio.ByteBuffer;
+
+/**
+ * @hide
+ */
+public class SerialPort {
+
+ private static final String TAG = "SerialPort";
+
+ // used by the JNI code
+ private int mNativeContext;
+ private final String mName;
+ private ParcelFileDescriptor mFileDescriptor;
+
+ /**
+ * SerialPort should only be instantiated by SerialManager
+ * @hide
+ */
+ public SerialPort(String name) {
+ mName = name;
+ }
+
+ /**
+ * SerialPort should only be instantiated by SerialManager
+ * Speed must be one of 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600,
+ * 19200, 38400, 57600, 115200, 230400, 460800, 500000, 576000, 921600, 1000000, 1152000,
+ * 1500000, 2000000, 2500000, 3000000, 3500000, 4000000
+ *
+ * @hide
+ */
+ public void open(ParcelFileDescriptor pfd, int speed) throws IOException {
+ native_open(pfd.getFileDescriptor(), speed);
+ mFileDescriptor = pfd;
+ }
+
+ /**
+ * Closes the serial port
+ */
+ public void close() throws IOException {
+ if (mFileDescriptor != null) {
+ mFileDescriptor.close();
+ mFileDescriptor = null;
+ }
+ native_close();
+ }
+
+ /**
+ * Returns the name of the serial port
+ *
+ * @return the serial port's name
+ */
+ public String getName() {
+ return mName;
+ }
+
+ /**
+ * Reads data into the provided buffer
+ *
+ * @param buffer to read into
+ * @return number of bytes read
+ */
+ public int read(ByteBuffer buffer) throws IOException {
+ if (buffer.isDirect()) {
+ return native_read_direct(buffer, buffer.remaining());
+ } else if (buffer.hasArray()) {
+ return native_read_array(buffer.array(), buffer.remaining());
+ } else {
+ throw new IllegalArgumentException("buffer is not direct and has no array");
+ }
+ }
+
+ /**
+ * Writes data from provided buffer
+ *
+ * @param buffer to write
+ * @param length number of bytes to write
+ */
+ public void write(ByteBuffer buffer, int length) throws IOException {
+ if (buffer.isDirect()) {
+ native_write_direct(buffer, length);
+ } else if (buffer.hasArray()) {
+ native_write_array(buffer.array(), length);
+ } else {
+ throw new IllegalArgumentException("buffer is not direct and has no array");
+ }
+ }
+
+ private native void native_open(FileDescriptor pfd, int speed) throws IOException;
+ private native void native_close();
+ private native int native_read_array(byte[] buffer, int length) throws IOException;
+ private native int native_read_direct(ByteBuffer buffer, int length) throws IOException;
+ private native void native_write_array(byte[] buffer, int length) throws IOException;
+ private native void native_write_direct(ByteBuffer buffer, int length) throws IOException;
+}
diff --git a/core/jni/Android.mk b/core/jni/Android.mk
index 39b84bb..78e8df3 100644
--- a/core/jni/Android.mk
+++ b/core/jni/Android.mk
@@ -126,6 +126,7 @@
android_media_ToneGenerator.cpp \
android_hardware_Camera.cpp \
android_hardware_SensorManager.cpp \
+ android_hardware_SerialPort.cpp \
android_hardware_UsbDevice.cpp \
android_hardware_UsbDeviceConnection.cpp \
android_hardware_UsbRequest.cpp \
diff --git a/core/jni/AndroidRuntime.cpp b/core/jni/AndroidRuntime.cpp
index 8a3063f..3067e75 100644
--- a/core/jni/AndroidRuntime.cpp
+++ b/core/jni/AndroidRuntime.cpp
@@ -76,6 +76,7 @@
extern int register_android_hardware_Camera(JNIEnv *env);
extern int register_android_hardware_SensorManager(JNIEnv *env);
+extern int register_android_hardware_SerialPort(JNIEnv *env);
extern int register_android_hardware_UsbDevice(JNIEnv *env);
extern int register_android_hardware_UsbDeviceConnection(JNIEnv *env);
extern int register_android_hardware_UsbRequest(JNIEnv *env);
@@ -1157,6 +1158,7 @@
REG_JNI(register_com_android_internal_os_ZygoteInit),
REG_JNI(register_android_hardware_Camera),
REG_JNI(register_android_hardware_SensorManager),
+ REG_JNI(register_android_hardware_SerialPort),
REG_JNI(register_android_hardware_UsbDevice),
REG_JNI(register_android_hardware_UsbDeviceConnection),
REG_JNI(register_android_hardware_UsbRequest),
diff --git a/core/jni/android_hardware_SerialPort.cpp b/core/jni/android_hardware_SerialPort.cpp
new file mode 100644
index 0000000..e67153b
--- /dev/null
+++ b/core/jni/android_hardware_SerialPort.cpp
@@ -0,0 +1,266 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "SerialPortJNI"
+
+#include "utils/Log.h"
+
+#include "jni.h"
+#include "JNIHelp.h"
+#include "android_runtime/AndroidRuntime.h"
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <termios.h>
+
+using namespace android;
+
+static jfieldID field_context;
+
+static void
+android_hardware_SerialPort_open(JNIEnv *env, jobject thiz, jobject fileDescriptor, jint speed)
+{
+ switch (speed) {
+ case 50:
+ speed = B50;
+ break;
+ case 75:
+ speed = B75;
+ break;
+ case 110:
+ speed = B110;
+ break;
+ case 134:
+ speed = B134;
+ break;
+ case 150:
+ speed = B150;
+ break;
+ case 200:
+ speed = B200;
+ break;
+ case 300:
+ speed = B300;
+ break;
+ case 600:
+ speed = B600;
+ break;
+ case 1200:
+ speed = B1200;
+ break;
+ case 1800:
+ speed = B1800;
+ break;
+ case 2400:
+ speed = B2400;
+ break;
+ case 4800:
+ speed = B4800;
+ break;
+ case 9600:
+ speed = B9600;
+ break;
+ case 19200:
+ speed = B19200;
+ break;
+ case 38400:
+ speed = B38400;
+ break;
+ case 57600:
+ speed = B57600;
+ break;
+ case 115200:
+ speed = B115200;
+ break;
+ case 230400:
+ speed = B230400;
+ break;
+ case 460800:
+ speed = B460800;
+ break;
+ case 500000:
+ speed = B500000;
+ break;
+ case 576000:
+ speed = B576000;
+ break;
+ case 921600:
+ speed = B921600;
+ break;
+ case 1000000:
+ speed = B1000000;
+ break;
+ case 1152000:
+ speed = B1152000;
+ break;
+ case 1500000:
+ speed = B1500000;
+ break;
+ case 2000000:
+ speed = B2000000;
+ break;
+ case 2500000:
+ speed = B2500000;
+ break;
+ case 3000000:
+ speed = B3000000;
+ break;
+ case 3500000:
+ speed = B3500000;
+ break;
+ case 4000000:
+ speed = B4000000;
+ break;
+ default:
+ jniThrowException(env, "java/lang/IllegalArgumentException",
+ "Unsupported serial port speed");
+ return;
+ }
+
+ int fd = jniGetFDFromFileDescriptor(env, fileDescriptor);
+ // duplicate the file descriptor, since ParcelFileDescriptor will eventually close its copy
+ fd = dup(fd);
+ if (fd < 0) {
+ jniThrowException(env, "java/io/IOException", "Could not open serial port");
+ return;
+ }
+ env->SetIntField(thiz, field_context, fd);
+
+ struct termios tio;
+ if (tcgetattr(fd, &tio))
+ memset(&tio, 0, sizeof(tio));
+
+ tio.c_cflag = speed | CS8 | CLOCAL | CREAD;
+ tio.c_iflag = IGNPAR;
+ tio.c_lflag = 0; /* turn of CANON, ECHO*, etc */
+ /* no timeout but request at least one character per read */
+ tio.c_cc[VTIME] = 0;
+ tio.c_cc[VMIN] = 1;
+ tcsetattr(fd, TCSANOW, &tio);
+ tcflush(fd, TCIFLUSH);
+}
+
+static void
+android_hardware_SerialPort_close(JNIEnv *env, jobject thiz)
+{
+ int fd = env->GetIntField(thiz, field_context);
+ close(fd);
+ env->SetIntField(thiz, field_context, -1);
+}
+
+static jint
+android_hardware_SerialPort_read_array(JNIEnv *env, jobject thiz, jbyteArray buffer, jint length)
+{
+ int fd = env->GetIntField(thiz, field_context);
+ jbyte* buf = (jbyte *)malloc(length);
+ if (!buf) {
+ jniThrowException(env, "java/lang/OutOfMemoryError", NULL);
+ return -1;
+ }
+
+ int ret = read(fd, buf, length);
+ if (ret > 0) {
+ // copy data from native buffer to Java buffer
+ env->SetByteArrayRegion(buffer, 0, ret, buf);
+ }
+
+ free(buf);
+ if (ret < 0)
+ jniThrowException(env, "java/io/IOException", NULL);
+ return ret;
+}
+
+static jint
+android_hardware_SerialPort_read_direct(JNIEnv *env, jobject thiz, jobject buffer, jint length)
+{
+ int fd = env->GetIntField(thiz, field_context);
+
+ jbyte* buf = (jbyte *)env->GetDirectBufferAddress(buffer);
+ if (!buf) {
+ jniThrowException(env, "java/lang/IllegalArgumentException", "ByteBuffer not direct");
+ return -1;
+ }
+
+ int ret = read(fd, buf, length);
+ if (ret < 0)
+ jniThrowException(env, "java/io/IOException", NULL);
+ return ret;
+}
+
+static void
+android_hardware_SerialPort_write_array(JNIEnv *env, jobject thiz, jbyteArray buffer, jint length)
+{
+ int fd = env->GetIntField(thiz, field_context);
+ jbyte* buf = (jbyte *)malloc(length);
+ if (!buf) {
+ jniThrowException(env, "java/lang/OutOfMemoryError", NULL);
+ return;
+ }
+ env->GetByteArrayRegion(buffer, 0, length, buf);
+
+ jint ret = write(fd, buf, length);
+ free(buf);
+ if (ret < 0)
+ jniThrowException(env, "java/io/IOException", NULL);
+}
+
+static void
+android_hardware_SerialPort_write_direct(JNIEnv *env, jobject thiz, jobject buffer, jint length)
+{
+ int fd = env->GetIntField(thiz, field_context);
+
+ jbyte* buf = (jbyte *)env->GetDirectBufferAddress(buffer);
+ if (!buf) {
+ jniThrowException(env, "java/lang/IllegalArgumentException", "ByteBuffer not direct");
+ return;
+ }
+ int ret = write(fd, buf, length);
+ if (ret < 0)
+ jniThrowException(env, "java/io/IOException", NULL);
+}
+
+static JNINativeMethod method_table[] = {
+ {"native_open", "(Ljava/io/FileDescriptor;I)V",
+ (void *)android_hardware_SerialPort_open},
+ {"native_close", "()V", (void *)android_hardware_SerialPort_close},
+ {"native_read_array", "([BI)I",
+ (void *)android_hardware_SerialPort_read_array},
+ {"native_read_direct", "(Ljava/nio/ByteBuffer;I)I",
+ (void *)android_hardware_SerialPort_read_direct},
+ {"native_write_array", "([BI)V",
+ (void *)android_hardware_SerialPort_write_array},
+ {"native_write_direct", "(Ljava/nio/ByteBuffer;I)V",
+ (void *)android_hardware_SerialPort_write_direct},
+};
+
+int register_android_hardware_SerialPort(JNIEnv *env)
+{
+ jclass clazz = env->FindClass("android/hardware/SerialPort");
+ if (clazz == NULL) {
+ ALOGE("Can't find android/hardware/SerialPort");
+ return -1;
+ }
+ field_context = env->GetFieldID(clazz, "mNativeContext", "I");
+ if (field_context == NULL) {
+ ALOGE("Can't find SerialPort.mNativeContext");
+ return -1;
+ }
+
+ return AndroidRuntime::registerNativeMethods(env, "android/hardware/SerialPort",
+ method_table, NELEM(method_table));
+}
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 1199cf7..68c919e 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -1514,6 +1514,13 @@
android:description="@string/permdesc_bindPackageVerifier"
android:protectionLevel="signature" />
+ <!-- Allows applications to access serial ports via the SerialManager.
+ @hide -->
+ <permission android:name="android.permission.SERIAL_PORT"
+ android:label="@string/permlab_serialPort"
+ android:description="@string/permdesc_serialPort"
+ android:protectionLevel="normal" />
+
<!-- The system process is explicitly the only one allowed to launch the
confirmation UI for full backup/restore -->
<uses-permission android:name="android.permission.CONFIRM_FULL_BACKUP"/>
diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index adde69b..9bdacf4 100755
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -368,6 +368,12 @@
<string-array name="config_usbHostBlacklist" translatable="false">
</string-array>
+ <!-- List of paths to serial ports that are available to the serial manager.
+ for example, /dev/ttyUSB0
+ -->
+ <string-array translatable="false" name="config_serialPorts">
+ </string-array>
+
<!-- Vibrator pattern for feedback about a long screen/key press -->
<integer-array name="config_longPressVibePattern">
<item>0</item>
diff --git a/core/res/res/values/public.xml b/core/res/res/values/public.xml
index 19e852e..fe56434 100644
--- a/core/res/res/values/public.xml
+++ b/core/res/res/values/public.xml
@@ -1289,6 +1289,7 @@
<java-symbol type="array" name="config_tether_usb_regexs" />
<java-symbol type="array" name="config_tether_wifi_regexs" />
<java-symbol type="array" name="config_usbHostBlacklist" />
+ <java-symbol type="array" name="config_serialPorts" />
<java-symbol type="array" name="radioAttributes" />
<java-symbol type="bool" name="config_animateScreenLights" />
<java-symbol type="bool" name="config_automatic_brightness_available" />
diff --git a/core/res/res/values/strings.xml b/core/res/res/values/strings.xml
index 701782c..4995d2c 100755
--- a/core/res/res/values/strings.xml
+++ b/core/res/res/values/strings.xml
@@ -2243,6 +2243,11 @@
<string name="permdesc_bindPackageVerifier">Allows the holder to make requests of
package verifiers. Should never be needed for normal apps.</string>
+ <!-- Title of an application permission which allows the application to access serial ports via the SerialManager. [CHAR LIMIT=40] -->
+ <string name="permlab_serialPort">access serial ports</string>
+ <!-- Description of an application permission which allows the application access serial ports via the SerialManager. [CHAR LIMIT=NONE] -->
+ <string name="permdesc_serialPort">Allows the holder to access serial ports using the SerialManager API.</string>
+
<!-- If the user enters a password in a form on a website, a dialog will come up asking if they want to save the password. Text in the save password dialog, asking if the browser should remember a password. -->
<string name="save_password_message">Do you want the browser to remember this password?</string>
<!-- If the user enters a password in a form on a website, a dialog will come up asking if they want to save the password. Button in the save password dialog, saying not to remember this password. -->
diff --git a/services/java/com/android/server/SerialService.java b/services/java/com/android/server/SerialService.java
new file mode 100644
index 0000000..5d2b2a0
--- /dev/null
+++ b/services/java/com/android/server/SerialService.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions an
+ * limitations under the License.
+ */
+
+package com.android.server;
+
+import android.content.Context;
+import android.hardware.ISerialManager;
+import android.os.ParcelFileDescriptor;
+
+import java.io.File;
+import java.util.ArrayList;
+
+public class SerialService extends ISerialManager.Stub {
+
+ private final Context mContext;
+ private final String[] mSerialPorts;
+
+ public SerialService(Context context) {
+ mContext = context;
+ mSerialPorts = context.getResources().getStringArray(
+ com.android.internal.R.array.config_serialPorts);
+ }
+
+ public String[] getSerialPorts() {
+ mContext.enforceCallingOrSelfPermission(android.Manifest.permission.SERIAL_PORT, null);
+
+ ArrayList<String> ports = new ArrayList<String>();
+ for (int i = 0; i < mSerialPorts.length; i++) {
+ String path = mSerialPorts[i];
+ if (new File(path).exists()) {
+ ports.add(path);
+ }
+ }
+ String[] result = new String[ports.size()];
+ ports.toArray(result);
+ return result;
+ }
+
+ public ParcelFileDescriptor openSerialPort(String path) {
+ mContext.enforceCallingOrSelfPermission(android.Manifest.permission.SERIAL_PORT, null);
+ return native_open(path);
+ }
+
+ private native ParcelFileDescriptor native_open(String path);
+}
diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index 762acbb..d132949 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -126,6 +126,7 @@
BluetoothA2dpService bluetoothA2dp = null;
DockObserver dock = null;
UsbService usb = null;
+ SerialService serial = null;
UiModeManagerService uiMode = null;
RecognitionManagerService recognition = null;
ThrottleService throttle = null;
@@ -497,6 +498,15 @@
}
try {
+ Slog.i(TAG, "Serial Service");
+ // Serial port support
+ serial = new SerialService(context);
+ ServiceManager.addService(Context.SERIAL_SERVICE, serial);
+ } catch (Throwable e) {
+ Slog.e(TAG, "Failure starting SerialService", e);
+ }
+
+ try {
Slog.i(TAG, "UI Mode Manager Service");
// Listen for UI mode changes
uiMode = new UiModeManagerService(context);
diff --git a/services/jni/Android.mk b/services/jni/Android.mk
index 6fa5dfa..c63b84d 100644
--- a/services/jni/Android.mk
+++ b/services/jni/Android.mk
@@ -9,6 +9,7 @@
com_android_server_InputWindowHandle.cpp \
com_android_server_LightsService.cpp \
com_android_server_PowerManagerService.cpp \
+ com_android_server_SerialService.cpp \
com_android_server_SystemServer.cpp \
com_android_server_UsbDeviceManager.cpp \
com_android_server_UsbHostManager.cpp \
diff --git a/services/jni/com_android_server_SerialService.cpp b/services/jni/com_android_server_SerialService.cpp
new file mode 100644
index 0000000..b889b78
--- /dev/null
+++ b/services/jni/com_android_server_SerialService.cpp
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "SerialServiceJNI"
+#include "utils/Log.h"
+
+#include "jni.h"
+#include "JNIHelp.h"
+#include "android_runtime/AndroidRuntime.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+namespace android
+{
+
+static struct parcel_file_descriptor_offsets_t
+{
+ jclass mClass;
+ jmethodID mConstructor;
+} gParcelFileDescriptorOffsets;
+
+static jobject android_server_SerialService_open(JNIEnv *env, jobject thiz, jstring path)
+{
+ const char *pathStr = env->GetStringUTFChars(path, NULL);
+
+ int fd = open(pathStr, O_RDWR | O_NOCTTY);
+ if (fd < 0) {
+ ALOGE("could not open %s", pathStr);
+ env->ReleaseStringUTFChars(path, pathStr);
+ return NULL;
+ }
+ env->ReleaseStringUTFChars(path, pathStr);
+
+ jobject fileDescriptor = jniCreateFileDescriptor(env, fd);
+ if (fileDescriptor == NULL) {
+ return NULL;
+ }
+ return env->NewObject(gParcelFileDescriptorOffsets.mClass,
+ gParcelFileDescriptorOffsets.mConstructor, fileDescriptor);
+}
+
+
+static JNINativeMethod method_table[] = {
+ { "native_open", "(Ljava/lang/String;)Landroid/os/ParcelFileDescriptor;",
+ (void*)android_server_SerialService_open },
+};
+
+int register_android_server_SerialService(JNIEnv *env)
+{
+ jclass clazz = env->FindClass("com/android/server/SerialService");
+ if (clazz == NULL) {
+ ALOGE("Can't find com/android/server/SerialService");
+ return -1;
+ }
+
+ clazz = env->FindClass("android/os/ParcelFileDescriptor");
+ LOG_FATAL_IF(clazz == NULL, "Unable to find class android.os.ParcelFileDescriptor");
+ gParcelFileDescriptorOffsets.mClass = (jclass) env->NewGlobalRef(clazz);
+ gParcelFileDescriptorOffsets.mConstructor = env->GetMethodID(clazz, "<init>", "(Ljava/io/FileDescriptor;)V");
+ LOG_FATAL_IF(gParcelFileDescriptorOffsets.mConstructor == NULL,
+ "Unable to find constructor for android.os.ParcelFileDescriptor");
+
+ return jniRegisterNativeMethods(env, "com/android/server/SerialService",
+ method_table, NELEM(method_table));
+}
+
+};
diff --git a/services/jni/onload.cpp b/services/jni/onload.cpp
index c7beb5f..423ebd1 100644
--- a/services/jni/onload.cpp
+++ b/services/jni/onload.cpp
@@ -27,6 +27,7 @@
int register_android_server_InputManager(JNIEnv* env);
int register_android_server_LightsService(JNIEnv* env);
int register_android_server_PowerManagerService(JNIEnv* env);
+int register_android_server_SerialService(JNIEnv* env);
int register_android_server_UsbDeviceManager(JNIEnv* env);
int register_android_server_UsbHostManager(JNIEnv* env);
int register_android_server_VibratorService(JNIEnv* env);
@@ -49,6 +50,7 @@
ALOG_ASSERT(env, "Could not retrieve the env!");
register_android_server_PowerManagerService(env);
+ register_android_server_SerialService(env);
register_android_server_InputApplicationHandle(env);
register_android_server_InputWindowHandle(env);
register_android_server_InputManager(env);