1 //go:build windows 2 3 package hcs 4 5 import ( 6 "context" 7 "sync" 8 9 "github.com/Microsoft/go-winio/pkg/guid" 10 "github.com/Microsoft/hcsshim/internal/hcs" 11 hcsschema "github.com/Microsoft/hcsshim/internal/hcs/schema2" 12 "github.com/Microsoft/hcsshim/internal/vm" 13 "github.com/pkg/errors" 14 "golang.org/x/sys/windows" 15 ) 16 17 var _ vm.UVM = &utilityVM{} 18 19 type utilityVM struct { 20 id string 21 guestOS vm.GuestOS 22 cs *hcs.System 23 backingType vm.MemoryBackingType 24 vmmemProcess windows.Handle 25 vmmemErr error 26 vmmemOnce sync.Once 27 vmID guid.GUID 28 } 29 30 func (uvm *utilityVM) ID() string { 31 return uvm.id 32 } 33 34 func (uvm *utilityVM) Start(ctx context.Context) (err error) { 35 if err := uvm.cs.Start(ctx); err != nil { 36 return errors.Wrap(err, "failed to start utility VM") 37 } 38 return nil 39 } 40 41 func (uvm *utilityVM) Stop(ctx context.Context) error { 42 if err := uvm.cs.Terminate(ctx); err != nil { 43 return errors.Wrap(err, "failed to terminate utility VM") 44 } 45 return nil 46 } 47 48 func (uvm *utilityVM) Pause(ctx context.Context) error { 49 if err := uvm.cs.Pause(ctx); err != nil { 50 return errors.Wrap(err, "failed to pause utility VM") 51 } 52 return nil 53 } 54 55 func (uvm *utilityVM) Resume(ctx context.Context) error { 56 if err := uvm.cs.Resume(ctx); err != nil { 57 return errors.Wrap(err, "failed to resume utility VM") 58 } 59 return nil 60 } 61 62 func (uvm *utilityVM) Save(ctx context.Context) error { 63 saveOptions := hcsschema.SaveOptions{ 64 SaveType: "AsTemplate", 65 } 66 if err := uvm.cs.Save(ctx, saveOptions); err != nil { 67 return errors.Wrap(err, "failed to save utility VM state") 68 } 69 return nil 70 } 71 72 func (uvm *utilityVM) Wait() error { 73 return uvm.cs.Wait() 74 } 75 76 func (uvm *utilityVM) ExitError() error { 77 return uvm.cs.ExitError() 78 } 79