| /* |
| * Copyright (C) 2016 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 "ShellCallback" |
| |
| #include <unistd.h> |
| #include <fcntl.h> |
| |
| #include <binder/IShellCallback.h> |
| |
| #include <utils/Log.h> |
| #include <binder/Parcel.h> |
| #include <utils/String8.h> |
| |
| namespace android { |
| |
| // ---------------------------------------------------------------------- |
| |
| class BpShellCallback : public BpInterface<IShellCallback> |
| { |
| public: |
| explicit BpShellCallback(const sp<IBinder>& impl) |
| : BpInterface<IShellCallback>(impl) |
| { |
| } |
| |
| virtual int openFile(const String16& path, const String16& seLinuxContext, |
| const String16& mode) { |
| Parcel data, reply; |
| data.writeInterfaceToken(IShellCallback::getInterfaceDescriptor()); |
| data.writeString16(path); |
| data.writeString16(seLinuxContext); |
| data.writeString16(mode); |
| remote()->transact(OP_OPEN_OUTPUT_FILE, data, &reply, 0); |
| reply.readExceptionCode(); |
| int fd = reply.readParcelFileDescriptor(); |
| return fd >= 0 ? fcntl(fd, F_DUPFD_CLOEXEC, 0) : fd; |
| |
| } |
| }; |
| |
| IMPLEMENT_META_INTERFACE(ShellCallback, "com.android.internal.os.IShellCallback"); |
| |
| // ---------------------------------------------------------------------- |
| |
| // NOLINTNEXTLINE(google-default-arguments) |
| status_t BnShellCallback::onTransact( |
| uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) |
| { |
| switch(code) { |
| case OP_OPEN_OUTPUT_FILE: { |
| CHECK_INTERFACE(IShellCallback, data, reply); |
| String16 path(data.readString16()); |
| String16 seLinuxContext(data.readString16()); |
| String16 mode(data.readString16()); |
| int fd = openFile(path, seLinuxContext, mode); |
| if (reply != nullptr) { |
| reply->writeNoException(); |
| if (fd >= 0) { |
| reply->writeInt32(1); |
| reply->writeParcelFileDescriptor(fd, true); |
| } else { |
| reply->writeInt32(0); |
| } |
| } else if (fd >= 0) { |
| close(fd); |
| } |
| return NO_ERROR; |
| } break; |
| default: |
| return BBinder::onTransact(code, data, reply, flags); |
| } |
| } |
| |
| } // namespace android |