1 #define LOG_TAG "hwservicemanager" 2 3 #include <utils/Log.h> 4 5 #include <inttypes.h> 6 #include <unistd.h> 7 8 #include <android/hidl/manager/1.0/BnHwServiceManager.h> 9 #include <android/hidl/manager/1.0/IServiceManager.h> 10 #include <android/hidl/token/1.0/ITokenManager.h> 11 #include <cutils/properties.h> 12 #include <hidl/Status.h> 13 #include <hwbinder/IPCThreadState.h> 14 #include <utils/Errors.h> 15 #include <utils/Looper.h> 16 #include <utils/StrongPointer.h> 17 18 #include "ServiceManager.h" 19 #include "TokenManager.h" 20 21 // libutils: 22 using android::BAD_TYPE; 23 using android::Looper; 24 using android::LooperCallback; 25 using android::OK; 26 using android::sp; 27 using android::status_t; 28 29 // libhwbinder: 30 using android::hardware::IPCThreadState; 31 32 // libhidl 33 using android::hardware::configureRpcThreadpool; 34 using android::hardware::hidl_string; 35 using android::hardware::hidl_vec; 36 37 // hidl types 38 using android::hidl::manager::V1_0::BnHwServiceManager; 39 using android::hidl::manager::V1_0::IServiceManager; 40 using android::hidl::token::V1_0::ITokenManager; 41 42 // implementations 43 using android::hidl::manager::V1_0::implementation::ServiceManager; 44 using android::hidl::token::V1_0::implementation::TokenManager; 45 46 static std::string serviceName = "default"; 47 48 class BinderCallback : public LooperCallback { 49 public: 50 BinderCallback() {} 51 ~BinderCallback() override {} 52 53 int handleEvent(int /* fd */, int /* events */, void* /* data */) override { 54 IPCThreadState::self()->handlePolledCommands(); 55 return 1; // Continue receiving callbacks. 56 } 57 }; 58 59 int main() { 60 configureRpcThreadpool(1, true /* callerWillJoin */); 61 62 ServiceManager *manager = new ServiceManager(); 63 64 if (!manager->add(serviceName, manager)) { 65 ALOGE("Failed to register hwservicemanager with itself."); 66 } 67 68 TokenManager *tokenManager = new TokenManager(); 69 70 if (!manager->add(serviceName, tokenManager)) { 71 ALOGE("Failed to register ITokenManager with hwservicemanager."); 72 } 73 74 sp<Looper> looper(Looper::prepare(0 /* opts */)); 75 76 int binder_fd = -1; 77 78 IPCThreadState::self()->setupPolling(&binder_fd); 79 if (binder_fd < 0) { 80 ALOGE("Failed to aquire binder FD. Aborting..."); 81 return -1; 82 } 83 // Flush after setupPolling(), to make sure the binder driver 84 // knows about this thread handling commands. 85 IPCThreadState::self()->flushCommands(); 86 87 sp<BinderCallback> cb(new BinderCallback); 88 if (looper->addFd(binder_fd, Looper::POLL_CALLBACK, Looper::EVENT_INPUT, cb, 89 nullptr) != 1) { 90 ALOGE("Failed to add hwbinder FD to Looper. Aborting..."); 91 return -1; 92 } 93 94 // Tell IPCThreadState we're the service manager 95 sp<BnHwServiceManager> service = new BnHwServiceManager(manager); 96 IPCThreadState::self()->setTheContextObject(service); 97 // Then tell binder kernel 98 ioctl(binder_fd, BINDER_SET_CONTEXT_MGR, 0); 99 // Only enable FIFO inheritance for hwbinder 100 // FIXME: remove define when in the kernel 101 #define BINDER_SET_INHERIT_FIFO_PRIO _IO('b', 10) 102 103 int rc = ioctl(binder_fd, BINDER_SET_INHERIT_FIFO_PRIO); 104 if (rc) { 105 ALOGE("BINDER_SET_INHERIT_FIFO_PRIO failed with error %d\n", rc); 106 } 107 108 rc = property_set("hwservicemanager.ready", "true"); 109 if (rc) { 110 ALOGE("Failed to set \"hwservicemanager.ready\" (error %d). "\ 111 "HAL services will not start!\n", rc); 112 } 113 114 while (true) { 115 looper->pollAll(-1 /* timeoutMillis */); 116 } 117 118 return 0; 119 } 120
