1// +build linux freebsd openbsd
2
3// Package kernel provides helper function to get, parse and compare kernel
4// versions for different platforms.
5package kernel // import "github.com/docker/docker/pkg/parsers/kernel"
6
7import (
8	"bytes"
9
10	"github.com/sirupsen/logrus"
11)
12
13// GetKernelVersion gets the current kernel version.
14func GetKernelVersion() (*VersionInfo, error) {
15	uts, err := uname()
16	if err != nil {
17		return nil, err
18	}
19
20	// Remove the \x00 from the release for Atoi to parse correctly
21	return ParseRelease(string(uts.Release[:bytes.IndexByte(uts.Release[:], 0)]))
22}
23
24// CheckKernelVersion checks if current kernel is newer than (or equal to)
25// the given version.
26func CheckKernelVersion(k, major, minor int) bool {
27	if v, err := GetKernelVersion(); err != nil {
28		logrus.Warnf("error getting kernel version: %s", err)
29	} else {
30		if CompareKernelVersion(*v, VersionInfo{Kernel: k, Major: major, Minor: minor}) < 0 {
31			return false
32		}
33	}
34	return true
35}
36