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);
}