crosvm/kvm_sys/tests/basic.rs

// Copyright 2017 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

use libc::{c_char, ioctl, open, O_RDWR};

use kvm_sys::*;

const KVM_PATH: &'static str = "/dev/kvm\0";

#[test]
fn get_version() {
    let sys_fd = unsafe { open(KVM_PATH.as_ptr() as *const c_char, O_RDWR) };
    assert!(sys_fd >= 0);

    let ret = unsafe { ioctl(sys_fd, KVM_GET_API_VERSION(), 0) };
    assert_eq!(ret as u32, KVM_API_VERSION);
}

#[test]
fn create_vm_fd() {
    let sys_fd = unsafe { open(KVM_PATH.as_ptr() as *const c_char, O_RDWR) };
    assert!(sys_fd >= 0);

    let vm_fd = unsafe { ioctl(sys_fd, KVM_CREATE_VM(), 0) };
    assert!(vm_fd >= 0);
}

#[test]
fn check_vm_extension() {
    let sys_fd = unsafe { open(KVM_PATH.as_ptr() as *const c_char, O_RDWR) };
    assert!(sys_fd >= 0);

    let has_user_memory = unsafe { ioctl(sys_fd, KVM_CHECK_EXTENSION(), KVM_CAP_USER_MEMORY) };
    assert_eq!(has_user_memory, 1);
}