| /* |
| * Copyright (C) 2020 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. |
| */ |
| |
| #include <android/file_descriptor_jni.h> |
| |
| #include <stddef.h> |
| |
| #define LOG_TAG "file_descriptor_jni" |
| #include "ALog-priv.h" |
| |
| #include "JniConstants.h" |
| |
| static void EnsureArgumentIsFileDescriptor(JNIEnv* env, jobject instance) { |
| ALOG_ALWAYS_FATAL_IF(instance == NULL, "FileDescriptor is NULL"); |
| jclass jifd = JniConstants_FileDescriptorClass(env); |
| ALOG_ALWAYS_FATAL_IF(!(*env)->IsInstanceOf(env, instance, jifd), |
| "Argument is not a FileDescriptor"); |
| } |
| |
| JNIEXPORT _Nullable jobject AFileDescriptor_create(JNIEnv* env) { |
| return (*env)->NewObject(env, |
| JniConstants_FileDescriptorClass(env), |
| JniConstants_FileDescriptor_init(env)); |
| } |
| |
| JNIEXPORT int AFileDescriptor_getFd(JNIEnv* env, jobject fileDescriptor) { |
| EnsureArgumentIsFileDescriptor(env, fileDescriptor); |
| return (*env)->GetIntField(env, fileDescriptor, JniConstants_FileDescriptor_descriptor(env)); |
| } |
| |
| JNIEXPORT void AFileDescriptor_setFd(JNIEnv* env, jobject fileDescriptor, int fd) { |
| EnsureArgumentIsFileDescriptor(env, fileDescriptor); |
| (*env)->SetIntField(env, fileDescriptor, JniConstants_FileDescriptor_descriptor(env), fd); |
| } |