Add HIDL Scheduler Service implementation.

Test: marlin camera successfully sets permissions
Bug: 29251823
Change-Id: Ic7dc0377e5b0c3b08d32cf97dae39b6d35a0f631

diff --git a/services/schedulerservice/Android.bp b/services/schedulerservice/Android.bp
new file mode 100644 (file)
index 0000000..1f1340c
--- /dev/null
+++ b/services/schedulerservice/Android.bp
@@ -0,0 +1,25 @@
+cc_library_shared {
+    name: "libschedulerservicehidl",
+    srcs: [
+        "SchedulingPolicyService.cpp",
+    ],
+    shared_libs: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "libmediautils",
+        "liblog",
+        "libutils",
+        "android.hidl.base@1.0",
+        "android.frameworks.schedulerservice@1.0",
+    ],
+    header_libs: [
+        "libcutils_headers",
+    ],
+    export_include_dirs: [
+        "include/"
+    ],
+    local_include_dirs: [
+        "include/schedulerservice/",
+    ],
+}

diff --git a/services/schedulerservice/SchedulingPolicyService.cpp b/services/schedulerservice/SchedulingPolicyService.cpp
new file mode 100644 (file)
index 0000000..522a8c0
--- /dev/null
+++ b/services/schedulerservice/SchedulingPolicyService.cpp
@@ -0,0 +1,53 @@
+/*
+ * 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.
+ */
+#define LOG_TAG "schedulerservicehidl"
+
+#include "SchedulingPolicyService.h"
+
+#include <private/android_filesystem_config.h> // for AID_CAMERASERVER
+
+#include <log/log.h>
+#include <hwbinder/IPCThreadState.h>
+#include <mediautils/SchedulingPolicyService.h>
+
+namespace android {
+namespace frameworks {
+namespace schedulerservice {
+namespace V1_0 {
+namespace implementation {
+
+Return<bool> SchedulingPolicyService::requestPriority(int32_t pid, int32_t tid, int32_t priority) {
+    using ::android::hardware::IPCThreadState;
+
+    if (priority < static_cast<int32_t>(Priority::MIN) ||
+            priority > static_cast<int32_t>(Priority::MAX)) {
+        return false;
+    }
+
+    if (IPCThreadState::self()->getCallingUid() != AID_CAMERASERVER) {
+        return false;
+    }
+
+    // this should always be allowed since we are in system_server.
+    int value = ::android::requestPriority(pid, tid, priority, false /* isForApp */);
+    return value == 0 /* success */;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace schedulerservice
+}  // namespace frameworks
+}  // namespace android

diff --git a/services/schedulerservice/include/schedulerservice/SchedulingPolicyService.h b/services/schedulerservice/include/schedulerservice/SchedulingPolicyService.h
new file mode 100644 (file)
index 0000000..eb5a4ae
--- /dev/null
+++ b/services/schedulerservice/include/schedulerservice/SchedulingPolicyService.h
@@ -0,0 +1,47 @@
+/*
+ * 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.
+ */
+#pragma once
+
+#include <android/frameworks/schedulerservice/1.0/ISchedulingPolicyService.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace frameworks {
+namespace schedulerservice {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::frameworks::schedulerservice::V1_0::ISchedulingPolicyService;
+using ::android::hidl::base::V1_0::DebugInfo;
+using ::android::hidl::base::V1_0::IBase;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::sp;
+
+struct SchedulingPolicyService : public ISchedulingPolicyService {
+    Return<bool> requestPriority(int32_t pid, int32_t tid, int32_t priority) override;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace schedulerservice
+}  // namespace frameworks
+}  // namespace android