Add initial version of files to the liburingutils am: c272d862

Original change: https://android-review.googlesource.com/c/platform/system/liburingutils/+/3460992



Change-Id: I394ba9a9775095aa76477aaaa68ae25cd84d1396
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

Android.bp

+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+cc_library {
+    name: "liburingutils",
+
+    srcs: [
+        "src/LibUringUtils.cpp",
+    ],
+
+    cflags: ["-Werror"],
+
+    export_include_dirs: ["include"],
+
+    shared_libs: [
+        "libbase",
+    ],
+
+    tidy: true,
+    tidy_checks: [
+        "-*",
+        "cert-*",
+        "clang-analyzer-security*",
+        "android-*",
+    ],
+    tidy_checks_as_errors: [
+        "cert-*",
+        "clang-analyzer-security*",
+        "android-*",
+    ],
+}
+
+cc_test {
+    name: "liburingutils_tests",
+    test_suites: ["device-tests"],
+    srcs: [
+        "src/LibUringUtils_test.cpp",
+    ],
+    shared_libs: [
+        "liburingutils",
+    ],
+}

OWNERS

+bojiandu@google.com
+sawlani@google.com
+akailash@google.com
\ No newline at end of file

include/liburingutils/LibUringUtils.h

+/*
+ * Copyright (C) 2025 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.
+ */
+
+#ifndef __LIBURING_UTILS_H
+#define __LIBURING_UTILS_H
+
+class LibUringUtils {
+public:
+    static bool isIouringEnabled();
+
+private:
+    static bool isIouringSupportedByKernel();
+};
+
+#endif

src/LibUringUtils.cpp

+/*
+ * Copyright (C) 2025 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 "LibUringUtils"
+
+#include <android-base/strings.h>
+#include <liburingutils/LibUringUtils.h>
+#include <sys/resource.h>
+#include <sys/utsname.h>
+#include <unistd.h>
+
+bool LibUringUtils::isIouringEnabled() {
+    // TODO: b/385143770 - Change this behavior to also check the Liburing version.
+    return isIouringSupportedByKernel();
+}
+
+bool LibUringUtils::isIouringSupportedByKernel() {
+    struct utsname uts {};
+    unsigned int major, minor;
+
+    uname(&uts);
+    if (sscanf(uts.release, "%u.%u", &major, &minor) != 2) {
+        return false;
+    }
+
+    // We will only support kernels from 6.1 and higher.
+    return major > 6 || (major == 6 && minor >= 1);
+}

src/LibUringUtils_test.cpp

+/*
+ * Copyright (C) 2025 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 <liburingutils/LibUringUtils.h>
+
+#include <gtest/gtest.h>
+
+class LibUringUtilsTest : public testing::Test {
+public:
+    void testIsIouringEnabled(bool expectedResult) {
+        EXPECT_EQ(LibUringUtils::isIouringEnabled(), expectedResult);
+    }
+};
+
+TEST_F(LibUringUtilsTest, ReturnsIouringNotEnabled) {
+    // TODO: b/385143770 - Change this test to base on the real OS version,
+    // this default expected value is true for the binary built from the
+    // latest version of source code.
+    testIsIouringEnabled(true);
+}