| /* |
| * 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 <nativehelper/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 const 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)); |
| } |
| |
| }; |