| // +build windows,!no_lcow |
| |
| package system // import "github.com/docker/docker/pkg/system" |
| |
| import ( |
| "strings" |
| |
| "github.com/Microsoft/hcsshim/osversion" |
| specs "github.com/opencontainers/image-spec/specs-go/v1" |
| "github.com/pkg/errors" |
| ) |
| |
| var ( |
| // lcowSupported determines if Linux Containers on Windows are supported. |
| lcowSupported = false |
| ) |
| |
| // InitLCOW sets whether LCOW is supported or not. Requires RS5+ |
| func InitLCOW(experimental bool) { |
| if experimental && osversion.Build() >= osversion.RS5 { |
| lcowSupported = true |
| } |
| } |
| |
| func LCOWSupported() bool { |
| return lcowSupported |
| } |
| |
| // ValidatePlatform determines if a platform structure is valid. |
| // TODO This is a temporary windows-only function, should be replaced by |
| // comparison of worker capabilities |
| func ValidatePlatform(platform specs.Platform) error { |
| if !IsOSSupported(platform.OS) { |
| return errors.Errorf("unsupported os %s", platform.OS) |
| } |
| return nil |
| } |
| |
| // IsOSSupported determines if an operating system is supported by the host |
| func IsOSSupported(os string) bool { |
| if strings.EqualFold("windows", os) { |
| return true |
| } |
| if LCOWSupported() && strings.EqualFold(os, "linux") { |
| return true |
| } |
| return false |
| } |