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 }