121 lines
2.6 KiB
Go
121 lines
2.6 KiB
Go
package common
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import (
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"context"
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"fmt"
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"io"
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"log"
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"os"
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"path/filepath"
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"github.com/hashicorp/packer/helper/multistep"
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"github.com/hashicorp/packer/packer"
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"github.com/hashicorp/packer/packer/tmp"
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)
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const (
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FloppyFileName = "assets.vfd"
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)
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type StepMountFloppydrive struct {
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Generation uint
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floppyPath string
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}
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func (s *StepMountFloppydrive) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
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if s.Generation > 1 {
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return multistep.ActionContinue
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}
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driver := state.Get("driver").(Driver)
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// Determine if we even have a floppy disk to attach
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var floppyPath string
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if floppyPathRaw, ok := state.GetOk("floppy_path"); ok {
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floppyPath = floppyPathRaw.(string)
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} else {
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log.Println("No floppy disk, not attaching.")
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return multistep.ActionContinue
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}
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// Hyper-V is really dumb and can't figure out the format of the file
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// without an extension, so we need to add the "vfd" extension to the
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// floppy.
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floppyPath, err := s.copyFloppy(floppyPath)
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if err != nil {
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state.Put("error", fmt.Errorf("Error preparing floppy: %s", err))
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return multistep.ActionHalt
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}
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ui := state.Get("ui").(packer.Ui)
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vmName := state.Get("vmName").(string)
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ui.Say("Mounting floppy drive...")
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err = driver.MountFloppyDrive(vmName, floppyPath)
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if err != nil {
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state.Put("error", fmt.Errorf("Error mounting floppy drive: %s", err))
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return multistep.ActionHalt
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}
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// Track the path so that we can unregister it from Hyper-V later
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s.floppyPath = floppyPath
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return multistep.ActionContinue
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}
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func (s *StepMountFloppydrive) Cleanup(state multistep.StateBag) {
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if s.Generation > 1 {
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return
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}
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driver := state.Get("driver").(Driver)
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if s.floppyPath == "" {
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return
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}
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errorMsg := "Error unmounting floppy drive: %s"
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vmName := state.Get("vmName").(string)
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ui := state.Get("ui").(packer.Ui)
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ui.Say("Cleanup floppy drive...")
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err := driver.UnmountFloppyDrive(vmName)
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if err != nil {
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log.Print(fmt.Sprintf(errorMsg, err))
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}
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err = os.Remove(s.floppyPath)
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if err != nil {
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log.Print(fmt.Sprintf(errorMsg, err))
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}
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}
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func (s *StepMountFloppydrive) copyFloppy(path string) (string, error) {
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tempdir, err := tmp.Dir("hyperv")
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if err != nil {
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return "", err
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}
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floppyPath := filepath.Join(tempdir, "floppy.vfd")
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f, err := os.Create(floppyPath)
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if err != nil {
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return "", err
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}
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defer f.Close()
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sourceF, err := os.Open(path)
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if err != nil {
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return "", err
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}
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defer sourceF.Close()
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log.Printf("Copying floppy to temp location: %s", floppyPath)
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if _, err := io.Copy(f, sourceF); err != nil {
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return "", err
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}
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return floppyPath, nil
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}
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