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package kernel // import "github.com/docker/docker/pkg/parsers/kernel"
import (
"fmt"
"golang.org/x/sys/windows"
"golang.org/x/sys/windows/registry"
)
// VersionInfo holds information about the kernel.
type VersionInfo struct {
kvi string // Version of the kernel (e.g. 6.1.7601.17592 -> 6)
major int // Major part of the kernel version (e.g. 6.1.7601.17592 -> 1)
minor int // Minor part of the kernel version (e.g. 6.1.7601.17592 -> 7601)
build int // Build number of the kernel version (e.g. 6.1.7601.17592 -> 17592)
}
func (k *VersionInfo) String() string {
return fmt.Sprintf("%d.%d %d (%s)", k.major, k.minor, k.build, k.kvi)
}
// GetKernelVersion gets the current kernel version.
func GetKernelVersion() (*VersionInfo, error) {
KVI := &VersionInfo{"Unknown", 0, 0, 0}
k, err := registry.OpenKey(registry.LOCAL_MACHINE, `SOFTWARE\Microsoft\Windows NT\CurrentVersion`, registry.QUERY_VALUE)
if err != nil {
return KVI, err
}
defer k.Close()
blex, _, err := k.GetStringValue("BuildLabEx")
if err != nil {
return KVI, err
}
KVI.kvi = blex
// Important - dockerd.exe MUST be manifested for this API to return
// the correct information.
dwVersion, err := windows.GetVersion()
if err != nil {
return KVI, err
}
KVI.major = int(dwVersion & 0xFF)
KVI.minor = int((dwVersion & 0xFF00) >> 8)
KVI.build = int((dwVersion & 0xFFFF0000) >> 16)
return KVI, nil
}
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