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/*
* 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));
}
};
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