package chroot import ( "bytes" "context" "fmt" "log" "path/filepath" "github.com/hashicorp/packer/helper/multistep" "github.com/hashicorp/packer/packer" ) // StepCopyFiles copies some files from the host into the chroot environment. // // Produces: // copy_files_cleanup CleanupFunc - A function to clean up the copied files // early. type StepCopyFiles struct { files []string } func (s *StepCopyFiles) Run(_ context.Context, state multistep.StateBag) multistep.StepAction { config := state.Get("config").(*Config) mountPath := state.Get("mount_path").(string) ui := state.Get("ui").(packer.Ui) wrappedCommand := state.Get("wrappedCommand").(CommandWrapper) stderr := new(bytes.Buffer) s.files = make([]string, 0, len(config.CopyFiles)) if len(config.CopyFiles) > 0 { ui.Say("Copying files from host to chroot...") for _, path := range config.CopyFiles { ui.Message(path) chrootPath := filepath.Join(mountPath, path) log.Printf("Copying '%s' to '%s'", path, chrootPath) cmdText, err := wrappedCommand(fmt.Sprintf("cp --remove-destination %s %s", path, chrootPath)) if err != nil { err := fmt.Errorf("Error building copy command: %s", err) state.Put("error", err) ui.Error(err.Error()) return multistep.ActionHalt } stderr.Reset() cmd := ShellCommand(cmdText) cmd.Stderr = stderr if err := cmd.Run(); err != nil { err := fmt.Errorf( "Error copying file: %s\nnStderr: %s", err, stderr.String()) state.Put("error", err) ui.Error(err.Error()) return multistep.ActionHalt } s.files = append(s.files, chrootPath) } } state.Put("copy_files_cleanup", s) return multistep.ActionContinue } func (s *StepCopyFiles) Cleanup(state multistep.StateBag) { ui := state.Get("ui").(packer.Ui) if err := s.CleanupFunc(state); err != nil { ui.Error(err.Error()) } } func (s *StepCopyFiles) CleanupFunc(state multistep.StateBag) error { wrappedCommand := state.Get("wrappedCommand").(CommandWrapper) if s.files != nil { for _, file := range s.files { log.Printf("Removing: %s", file) localCmdText, err := wrappedCommand(fmt.Sprintf("rm -f %s", file)) if err != nil { return err } localCmd := ShellCommand(localCmdText) if err := localCmd.Run(); err != nil { return err } } } s.files = nil return nil }