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-rw-r--r--libs/binder/BackendUnifiedServiceManager.cpp142
1 files changed, 121 insertions, 21 deletions
diff --git a/libs/binder/BackendUnifiedServiceManager.cpp b/libs/binder/BackendUnifiedServiceManager.cpp
index 34d5a09948..ee3d6af742 100644
--- a/libs/binder/BackendUnifiedServiceManager.cpp
+++ b/libs/binder/BackendUnifiedServiceManager.cpp
@@ -15,6 +15,7 @@
*/
#include "BackendUnifiedServiceManager.h"
+#include <android-base/strings.h>
#include <android/os/IAccessor.h>
#include <android/os/IServiceManager.h>
#include <binder/RpcSession.h>
@@ -47,6 +48,9 @@ using AidlServiceManager = android::os::IServiceManager;
using android::os::IAccessor;
using binder::Status;
+static const char* kUnsupportedOpNoServiceManager =
+ "Unsupported operation without a kernel binder servicemanager process";
+
static const char* kStaticCachableList[] = {
// go/keep-sorted start
"accessibility",
@@ -220,7 +224,10 @@ Status BackendUnifiedServiceManager::getService2(const ::std::string& name, os::
return Status::ok();
}
os::Service service;
- Status status = mTheRealServiceManager->getService2(name, &service);
+ Status status = Status::ok();
+ if (mTheRealServiceManager) {
+ status = mTheRealServiceManager->getService2(name, &service);
+ }
if (status.isOk()) {
status = toBinderService(name, service, _out);
@@ -237,7 +244,10 @@ Status BackendUnifiedServiceManager::checkService(const ::std::string& name, os:
return Status::ok();
}
- Status status = mTheRealServiceManager->checkService(name, &service);
+ Status status = Status::ok();
+ if (mTheRealServiceManager) {
+ status = mTheRealServiceManager->checkService(name, &service);
+ }
if (status.isOk()) {
status = toBinderService(name, service, _out);
if (status.isOk()) {
@@ -315,66 +325,156 @@ Status BackendUnifiedServiceManager::toBinderService(const ::std::string& name,
Status BackendUnifiedServiceManager::addService(const ::std::string& name,
const sp<IBinder>& service, bool allowIsolated,
int32_t dumpPriority) {
- Status status = mTheRealServiceManager->addService(name, service, allowIsolated, dumpPriority);
- // mEnableAddServiceCache is true by default.
- if (kUseCacheInAddService && mEnableAddServiceCache && status.isOk()) {
- return updateCache(name, service,
- dumpPriority & android::os::IServiceManager::FLAG_IS_LAZY_SERVICE);
+ if (mTheRealServiceManager) {
+ Status status =
+ mTheRealServiceManager->addService(name, service, allowIsolated, dumpPriority);
+ // mEnableAddServiceCache is true by default.
+ if (kUseCacheInAddService && mEnableAddServiceCache && status.isOk()) {
+ return updateCache(name, service,
+ dumpPriority & android::os::IServiceManager::FLAG_IS_LAZY_SERVICE);
+ }
+ return status;
}
- return status;
+ return Status::fromExceptionCode(Status::EX_UNSUPPORTED_OPERATION,
+ kUnsupportedOpNoServiceManager);
}
Status BackendUnifiedServiceManager::listServices(int32_t dumpPriority,
::std::vector<::std::string>* _aidl_return) {
- return mTheRealServiceManager->listServices(dumpPriority, _aidl_return);
+ Status status = Status::ok();
+ if (mTheRealServiceManager) {
+ status = mTheRealServiceManager->listServices(dumpPriority, _aidl_return);
+ }
+ if (!status.isOk()) return status;
+
+ appendInjectedAccessorServices(_aidl_return);
+
+ return status;
}
Status BackendUnifiedServiceManager::registerForNotifications(
const ::std::string& name, const sp<os::IServiceCallback>& callback) {
- return mTheRealServiceManager->registerForNotifications(name, callback);
+ if (mTheRealServiceManager) {
+ return mTheRealServiceManager->registerForNotifications(name, callback);
+ }
+ return Status::fromExceptionCode(Status::EX_UNSUPPORTED_OPERATION,
+ kUnsupportedOpNoServiceManager);
}
Status BackendUnifiedServiceManager::unregisterForNotifications(
const ::std::string& name, const sp<os::IServiceCallback>& callback) {
- return mTheRealServiceManager->unregisterForNotifications(name, callback);
+ if (mTheRealServiceManager) {
+ return mTheRealServiceManager->unregisterForNotifications(name, callback);
+ }
+ return Status::fromExceptionCode(Status::EX_UNSUPPORTED_OPERATION,
+ kUnsupportedOpNoServiceManager);
}
Status BackendUnifiedServiceManager::isDeclared(const ::std::string& name, bool* _aidl_return) {
- return mTheRealServiceManager->isDeclared(name, _aidl_return);
+ Status status = Status::ok();
+ if (mTheRealServiceManager) {
+ status = mTheRealServiceManager->isDeclared(name, _aidl_return);
+ }
+ if (!status.isOk()) return status;
+
+ if (!*_aidl_return) {
+ forEachInjectedAccessorService([&](const std::string& instance) {
+ if (name == instance) {
+ *_aidl_return = true;
+ }
+ });
+ }
+
+ return status;
}
Status BackendUnifiedServiceManager::getDeclaredInstances(
const ::std::string& iface, ::std::vector<::std::string>* _aidl_return) {
- return mTheRealServiceManager->getDeclaredInstances(iface, _aidl_return);
+ Status status = Status::ok();
+ if (mTheRealServiceManager) {
+ status = mTheRealServiceManager->getDeclaredInstances(iface, _aidl_return);
+ }
+ if (!status.isOk()) return status;
+
+ forEachInjectedAccessorService([&](const std::string& instance) {
+ // Declared instances have the format
+ // <interface>/instance like foo.bar.ISomething/instance
+ // If it does not have that format, consider the instance to be ""
+ std::string_view name(instance);
+ if (base::ConsumePrefix(&name, iface + "/")) {
+ _aidl_return->emplace_back(name);
+ } else if (iface == instance) {
+ _aidl_return->push_back("");
+ }
+ });
+
+ return status;
}
Status BackendUnifiedServiceManager::updatableViaApex(
const ::std::string& name, ::std::optional<::std::string>* _aidl_return) {
- return mTheRealServiceManager->updatableViaApex(name, _aidl_return);
+ if (mTheRealServiceManager) {
+ return mTheRealServiceManager->updatableViaApex(name, _aidl_return);
+ }
+ return Status::fromExceptionCode(Status::EX_UNSUPPORTED_OPERATION,
+ kUnsupportedOpNoServiceManager);
}
Status BackendUnifiedServiceManager::getUpdatableNames(const ::std::string& apexName,
::std::vector<::std::string>* _aidl_return) {
- return mTheRealServiceManager->getUpdatableNames(apexName, _aidl_return);
+ if (mTheRealServiceManager) {
+ return mTheRealServiceManager->getUpdatableNames(apexName, _aidl_return);
+ }
+ return Status::fromExceptionCode(Status::EX_UNSUPPORTED_OPERATION,
+ kUnsupportedOpNoServiceManager);
}
Status BackendUnifiedServiceManager::getConnectionInfo(
const ::std::string& name, ::std::optional<os::ConnectionInfo>* _aidl_return) {
- return mTheRealServiceManager->getConnectionInfo(name, _aidl_return);
+ if (mTheRealServiceManager) {
+ return mTheRealServiceManager->getConnectionInfo(name, _aidl_return);
+ }
+ return Status::fromExceptionCode(Status::EX_UNSUPPORTED_OPERATION,
+ kUnsupportedOpNoServiceManager);
}
Status BackendUnifiedServiceManager::registerClientCallback(
const ::std::string& name, const sp<IBinder>& service,
const sp<os::IClientCallback>& callback) {
- return mTheRealServiceManager->registerClientCallback(name, service, callback);
+ if (mTheRealServiceManager) {
+ return mTheRealServiceManager->registerClientCallback(name, service, callback);
+ }
+ return Status::fromExceptionCode(Status::EX_UNSUPPORTED_OPERATION,
+ kUnsupportedOpNoServiceManager);
}
Status BackendUnifiedServiceManager::tryUnregisterService(const ::std::string& name,
const sp<IBinder>& service) {
- return mTheRealServiceManager->tryUnregisterService(name, service);
+ if (mTheRealServiceManager) {
+ return mTheRealServiceManager->tryUnregisterService(name, service);
+ }
+ return Status::fromExceptionCode(Status::EX_UNSUPPORTED_OPERATION,
+ kUnsupportedOpNoServiceManager);
}
Status BackendUnifiedServiceManager::getServiceDebugInfo(
::std::vector<os::ServiceDebugInfo>* _aidl_return) {
- return mTheRealServiceManager->getServiceDebugInfo(_aidl_return);
+ if (mTheRealServiceManager) {
+ return mTheRealServiceManager->getServiceDebugInfo(_aidl_return);
+ }
+ return Status::fromExceptionCode(Status::EX_UNSUPPORTED_OPERATION,
+ kUnsupportedOpNoServiceManager);
}
[[clang::no_destroy]] static std::once_flag gUSmOnce;
[[clang::no_destroy]] static sp<BackendUnifiedServiceManager> gUnifiedServiceManager;
+static bool hasOutOfProcessServiceManager() {
+#ifndef BINDER_WITH_KERNEL_IPC
+ return false;
+#else
+#if defined(__BIONIC__) && !defined(__ANDROID_VNDK__)
+ return android::base::GetBoolProperty("servicemanager.installed", true);
+#else
+ return true;
+#endif
+#endif // BINDER_WITH_KERNEL_IPC
+}
+
sp<BackendUnifiedServiceManager> getBackendUnifiedServiceManager() {
std::call_once(gUSmOnce, []() {
#if defined(__BIONIC__) && !defined(__ANDROID_VNDK__)
- /* wait for service manager */ {
+ /* wait for service manager */
+ if (hasOutOfProcessServiceManager()) {
using std::literals::chrono_literals::operator""s;
using android::base::WaitForProperty;
while (!WaitForProperty("servicemanager.ready", "true", 1s)) {
@@ -384,7 +484,7 @@ sp<BackendUnifiedServiceManager> getBackendUnifiedServiceManager() {
#endif
sp<AidlServiceManager> sm = nullptr;
- while (sm == nullptr) {
+ while (hasOutOfProcessServiceManager() && sm == nullptr) {
sm = interface_cast<AidlServiceManager>(
ProcessState::self()->getContextObject(nullptr));
if (sm == nullptr) {
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-10-20 12:23:19 +0000