Steven Moreland | fe66b73 | 2019-02-01 14:29:45 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Steven Moreland | 5fb3d65 | 2016-11-03 13:45:18 -0700 | [diff] [blame] | 17 | #define LOG_TAG "hwservicemanager" |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 18 | |
| 19 | #include <utils/Log.h> |
| 20 | |
| 21 | #include <inttypes.h> |
| 22 | #include <unistd.h> |
Steven Moreland | d853620 | 2018-09-26 10:56:19 -0700 | [diff] [blame] | 23 | #include <sys/timerfd.h> |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 24 | |
Steven Moreland | 66ac401 | 2016-12-21 15:06:10 -0800 | [diff] [blame] | 25 | #include <android/hidl/token/1.0/ITokenManager.h> |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 26 | #include <cutils/properties.h> |
Steven Moreland | 7385924 | 2018-10-05 11:08:32 -0700 | [diff] [blame] | 27 | #include <hidl/HidlBinderSupport.h> |
| 28 | #include <hidl/HidlTransportSupport.h> |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 29 | #include <hidl/Status.h> |
| 30 | #include <hwbinder/IPCThreadState.h> |
Martijn Coenen | 6942be6 | 2017-11-07 16:25:11 +0100 | [diff] [blame] | 31 | #include <hwbinder/ProcessState.h> |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 32 | #include <utils/Errors.h> |
| 33 | #include <utils/Looper.h> |
| 34 | #include <utils/StrongPointer.h> |
| 35 | |
| 36 | #include "ServiceManager.h" |
Steven Moreland | 66ac401 | 2016-12-21 15:06:10 -0800 | [diff] [blame] | 37 | #include "TokenManager.h" |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 38 | |
| 39 | // libutils: |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 40 | using android::sp; |
Steven Moreland | 72cde21 | 2018-09-26 09:51:47 -0700 | [diff] [blame] | 41 | using android::Looper; |
| 42 | using android::LooperCallback; |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 43 | |
| 44 | // libhwbinder: |
Steven Moreland | 7385924 | 2018-10-05 11:08:32 -0700 | [diff] [blame] | 45 | using android::hardware::BHwBinder; |
| 46 | using android::hardware::IBinder; |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 47 | using android::hardware::IPCThreadState; |
Martijn Coenen | 6942be6 | 2017-11-07 16:25:11 +0100 | [diff] [blame] | 48 | using android::hardware::ProcessState; |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 49 | |
| 50 | // libhidl |
Steven Moreland | 72cde21 | 2018-09-26 09:51:47 -0700 | [diff] [blame] | 51 | using android::hardware::handleTransportPoll; |
Steven Moreland | 7185a89 | 2019-01-09 18:00:05 -0800 | [diff] [blame] | 52 | using android::hardware::setRequestingSid; |
Steven Moreland | f0e244a | 2019-03-05 19:36:34 -0800 | [diff] [blame] | 53 | using android::hardware::HidlReturnRestriction; |
| 54 | using android::hardware::setProcessHidlReturnRestriction; |
Steven Moreland | 72cde21 | 2018-09-26 09:51:47 -0700 | [diff] [blame] | 55 | using android::hardware::setupTransportPolling; |
Steven Moreland | 7385924 | 2018-10-05 11:08:32 -0700 | [diff] [blame] | 56 | using android::hardware::toBinder; |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 57 | |
Steven Moreland | 66ac401 | 2016-12-21 15:06:10 -0800 | [diff] [blame] | 58 | // implementations |
Steven Moreland | 6f4fbe1 | 2017-07-21 18:07:42 -0700 | [diff] [blame] | 59 | using android::hidl::manager::implementation::ServiceManager; |
Steven Moreland | 7385924 | 2018-10-05 11:08:32 -0700 | [diff] [blame] | 60 | using android::hidl::manager::V1_0::IServiceManager; |
Steven Moreland | 66ac401 | 2016-12-21 15:06:10 -0800 | [diff] [blame] | 61 | using android::hidl::token::V1_0::implementation::TokenManager; |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 62 | |
Yifan Hong | 1899688 | 2017-02-24 17:04:48 -0800 | [diff] [blame] | 63 | static std::string serviceName = "default"; |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 64 | |
Steven Moreland | 72cde21 | 2018-09-26 09:51:47 -0700 | [diff] [blame] | 65 | class HwBinderCallback : public LooperCallback { |
| 66 | public: |
| 67 | static sp<HwBinderCallback> setupTo(const sp<Looper>& looper) { |
| 68 | sp<HwBinderCallback> cb = new HwBinderCallback; |
Martijn Coenen | 437bbb4 | 2016-12-28 17:06:54 +0100 | [diff] [blame] | 69 | |
Steven Moreland | 72cde21 | 2018-09-26 09:51:47 -0700 | [diff] [blame] | 70 | int fdHwBinder = setupTransportPolling(); |
| 71 | LOG_ALWAYS_FATAL_IF(fdHwBinder < 0, "Failed to setupTransportPolling: %d", fdHwBinder); |
| 72 | |
| 73 | // Flush after setupPolling(), to make sure the binder driver |
| 74 | // knows about this thread handling commands. |
| 75 | IPCThreadState::self()->flushCommands(); |
| 76 | |
| 77 | int ret = looper->addFd(fdHwBinder, |
| 78 | Looper::POLL_CALLBACK, |
| 79 | Looper::EVENT_INPUT, |
| 80 | cb, |
| 81 | nullptr /*data*/); |
| 82 | LOG_ALWAYS_FATAL_IF(ret != 1, "Failed to add binder FD to Looper"); |
| 83 | |
| 84 | return cb; |
| 85 | } |
| 86 | |
| 87 | int handleEvent(int fd, int /*events*/, void* /*data*/) override { |
| 88 | handleTransportPoll(fd); |
| 89 | return 1; // Continue receiving callbacks. |
| 90 | } |
| 91 | }; |
| 92 | |
Steven Moreland | d853620 | 2018-09-26 10:56:19 -0700 | [diff] [blame] | 93 | // LooperCallback for IClientCallback |
| 94 | class ClientCallbackCallback : public LooperCallback { |
| 95 | public: |
| 96 | static sp<ClientCallbackCallback> setupTo(const sp<Looper>& looper, const sp<ServiceManager>& manager) { |
| 97 | sp<ClientCallbackCallback> cb = new ClientCallbackCallback(manager); |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 98 | |
Steven Moreland | d853620 | 2018-09-26 10:56:19 -0700 | [diff] [blame] | 99 | int fdTimer = timerfd_create(CLOCK_MONOTONIC, 0 /*flags*/); |
| 100 | LOG_ALWAYS_FATAL_IF(fdTimer < 0, "Failed to timerfd_create: fd: %d err: %d", fdTimer, errno); |
| 101 | |
| 102 | itimerspec timespec { |
| 103 | .it_interval = { |
| 104 | .tv_sec = 5, |
| 105 | .tv_nsec = 0, |
| 106 | }, |
| 107 | .it_value = { |
| 108 | .tv_sec = 5, |
| 109 | .tv_nsec = 0, |
| 110 | }, |
| 111 | }; |
| 112 | |
| 113 | int timeRes = timerfd_settime(fdTimer, 0 /*flags*/, ×pec, nullptr); |
| 114 | LOG_ALWAYS_FATAL_IF(timeRes < 0, "Failed to timerfd_settime: res: %d err: %d", timeRes, errno); |
| 115 | |
| 116 | int addRes = looper->addFd(fdTimer, |
| 117 | Looper::POLL_CALLBACK, |
| 118 | Looper::EVENT_INPUT, |
| 119 | cb, |
| 120 | nullptr); |
| 121 | LOG_ALWAYS_FATAL_IF(addRes != 1, "Failed to add client callback FD to Looper"); |
| 122 | |
| 123 | return cb; |
| 124 | } |
| 125 | |
| 126 | int handleEvent(int fd, int /*events*/, void* /*data*/) override { |
| 127 | uint64_t expirations; |
| 128 | int ret = read(fd, &expirations, sizeof(expirations)); |
| 129 | if (ret != sizeof(expirations)) { |
| 130 | ALOGE("Read failed to callback FD: ret: %d err: %d", ret, errno); |
| 131 | } |
| 132 | |
| 133 | mManager->handleClientCallbacks(); |
| 134 | return 1; // Continue receiving callbacks. |
| 135 | } |
| 136 | private: |
| 137 | ClientCallbackCallback(const sp<ServiceManager>& manager) : mManager(manager) {} |
| 138 | sp<ServiceManager> mManager; |
| 139 | }; |
| 140 | |
| 141 | int main() { |
Steven Moreland | f0e244a | 2019-03-05 19:36:34 -0800 | [diff] [blame] | 142 | // If hwservicemanager crashes, the system may be unstable and hard to debug. This is both why |
| 143 | // we log this and why we care about this at all. |
| 144 | setProcessHidlReturnRestriction(HidlReturnRestriction::ERROR_IF_UNCHECKED); |
| 145 | |
Steven Moreland | d853620 | 2018-09-26 10:56:19 -0700 | [diff] [blame] | 146 | sp<ServiceManager> manager = new ServiceManager(); |
Steven Moreland | 7185a89 | 2019-01-09 18:00:05 -0800 | [diff] [blame] | 147 | setRequestingSid(manager, true); |
| 148 | |
Steven Moreland | f0e244a | 2019-03-05 19:36:34 -0800 | [diff] [blame] | 149 | if (!manager->add(serviceName, manager).withDefault(false)) { |
Martijn Coenen | 1a5da1c | 2017-03-06 13:05:39 +0100 | [diff] [blame] | 150 | ALOGE("Failed to register hwservicemanager with itself."); |
| 151 | } |
Steven Moreland | 7623781 | 2016-11-08 15:59:04 -0800 | [diff] [blame] | 152 | |
Steven Moreland | d853620 | 2018-09-26 10:56:19 -0700 | [diff] [blame] | 153 | sp<TokenManager> tokenManager = new TokenManager(); |
Steven Moreland | f0e244a | 2019-03-05 19:36:34 -0800 | [diff] [blame] | 154 | if (!manager->add(serviceName, tokenManager).withDefault(false)) { |
Martijn Coenen | 1a5da1c | 2017-03-06 13:05:39 +0100 | [diff] [blame] | 155 | ALOGE("Failed to register ITokenManager with hwservicemanager."); |
| 156 | } |
Steven Moreland | 7623781 | 2016-11-08 15:59:04 -0800 | [diff] [blame] | 157 | |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 158 | // Tell IPCThreadState we're the service manager |
Steven Moreland | 7385924 | 2018-10-05 11:08:32 -0700 | [diff] [blame] | 159 | sp<IBinder> binder = toBinder<IServiceManager>(manager); |
| 160 | sp<BHwBinder> service = static_cast<BHwBinder*>(binder.get()); // local binder object |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 161 | IPCThreadState::self()->setTheContextObject(service); |
Martijn Coenen | 6942be6 | 2017-11-07 16:25:11 +0100 | [diff] [blame] | 162 | // Then tell the kernel |
| 163 | ProcessState::self()->becomeContextManager(nullptr, nullptr); |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 164 | |
Martijn Coenen | 62c5130 | 2017-11-07 13:22:22 +0100 | [diff] [blame] | 165 | int rc = property_set("hwservicemanager.ready", "true"); |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 166 | if (rc) { |
Steven Moreland | 50bf182 | 2017-03-27 08:33:16 -0700 | [diff] [blame] | 167 | ALOGE("Failed to set \"hwservicemanager.ready\" (error %d). "\ |
| 168 | "HAL services will not start!\n", rc); |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 169 | } |
| 170 | |
Steven Moreland | 72cde21 | 2018-09-26 09:51:47 -0700 | [diff] [blame] | 171 | sp<Looper> looper = Looper::prepare(0 /* opts */); |
| 172 | |
| 173 | (void)HwBinderCallback::setupTo(looper); |
Steven Moreland | d853620 | 2018-09-26 10:56:19 -0700 | [diff] [blame] | 174 | (void)ClientCallbackCallback::setupTo(looper, manager); |
Steven Moreland | 72cde21 | 2018-09-26 09:51:47 -0700 | [diff] [blame] | 175 | |
Wei Wang | 64e5f90 | 2018-04-04 13:41:10 -0700 | [diff] [blame] | 176 | ALOGI("hwservicemanager is ready now."); |
Steven Moreland | 72cde21 | 2018-09-26 09:51:47 -0700 | [diff] [blame] | 177 | |
| 178 | while (true) { |
| 179 | looper->pollAll(-1 /* timeoutMillis */); |
| 180 | } |
Steven Moreland | d83d110 | 2016-10-25 15:01:47 -0700 | [diff] [blame] | 181 | |
| 182 | return 0; |
Martijn Coenen | fcfcdfb | 2016-12-12 13:46:44 +0100 | [diff] [blame] | 183 | } |