| /* |
| * Copyright (C) 2017 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 <binder/IPCThreadState.h> |
| #include <hidl/HidlTransportSupport.h> |
| #include <hwbinder/IPCThreadState.h> |
| #include "Controllers.h" |
| #include "Fwmark.h" |
| #include "NetdHwService.h" |
| |
| using android::hardware::configureRpcThreadpool; |
| using android::hardware::IPCThreadState; |
| using android::hardware::Void; |
| |
| namespace android { |
| namespace net { |
| |
| /** |
| * This lock exists to make NetdHwService RPCs (which come in on multiple HwBinder threads) |
| * coexist with the commands in CommandListener.cpp. These are presumed not thread-safe because |
| * CommandListener has only one user (NetworkManagementService), which is connected through a |
| * FrameworkListener that passes in commands one at a time. |
| */ |
| extern android::RWLock gBigNetdLock; |
| |
| static INetd::StatusCode toHalStatus(int ret) { |
| switch(ret) { |
| case 0: |
| return INetd::StatusCode::OK; |
| case -EINVAL: |
| return INetd::StatusCode::INVALID_ARGUMENTS; |
| case -EEXIST: |
| return INetd::StatusCode::ALREADY_EXISTS; |
| case -ENONET: |
| return INetd::StatusCode::NO_NETWORK; |
| case -EPERM: |
| return INetd::StatusCode::PERMISSION_DENIED; |
| default: |
| ALOGE("HAL service error=%d", ret); |
| return INetd::StatusCode::UNKNOWN_ERROR; |
| } |
| } |
| |
| // Minimal service start. |
| status_t NetdHwService::start() { |
| IPCThreadState::self()->disableBackgroundScheduling(true); |
| // Usage of this HAL is anticipated to be thin; one thread should suffice. |
| configureRpcThreadpool(1, false /* callerWillNotJoin */); |
| // Register hardware service with ServiceManager. |
| return INetd::registerAsService(); |
| } |
| |
| Return<void> NetdHwService::createOemNetwork(createOemNetwork_cb _hidl_cb) { |
| unsigned netId; |
| Permission permission = PERMISSION_SYSTEM; |
| |
| android::RWLock::AutoWLock _lock(gBigNetdLock); |
| int ret = gCtls->netCtrl.createPhysicalOemNetwork(permission, &netId); |
| |
| Fwmark fwmark; |
| fwmark.netId = netId; |
| fwmark.explicitlySelected = true; |
| fwmark.protectedFromVpn = true; |
| fwmark.permission = PERMISSION_SYSTEM; |
| _hidl_cb(netIdToNetHandle(netId), fwmark.intValue, toHalStatus(ret)); |
| |
| return Void(); |
| } |
| |
| Return<INetd::StatusCode> NetdHwService::destroyOemNetwork(uint64_t netHandle) { |
| unsigned netId = netHandleToNetId(netHandle); |
| if ((netId < NetworkController::MIN_OEM_ID) || |
| (netId > NetworkController::MAX_OEM_ID)) { |
| return INetd::StatusCode::INVALID_ARGUMENTS; |
| } |
| |
| android::RWLock::AutoWLock _lock(gBigNetdLock); |
| |
| return toHalStatus(gCtls->netCtrl.destroyNetwork(netId)); |
| } |
| |
| } // namespace net |
| } // namespace android |