2
2
mirror of https://github.com/octoleo/restic.git synced 2024-12-21 02:19:04 +00:00
restic/internal/selfupdate/download_windows.go
Michael Eischer 34e67e3510 self-update: Fix handling of --output on windows
The code always assumed that the upgrade happens in place. Thus writing
the upgrade to a separate file fails, when trying to remove the file
stored at that location.
2023-01-22 15:39:42 +01:00

31 lines
730 B
Go

//go:build windows
// +build windows
package selfupdate
import (
"fmt"
"os"
"path/filepath"
"github.com/restic/restic/internal/errors"
)
// Rename (rather than remove) the running version. The running binary will be locked
// on Windows and cannot be removed while still executing.
func removeResticBinary(dir, target string) error {
// nothing to do if the target does not exist
if _, err := os.Stat(target); errors.Is(err, os.ErrNotExist) {
return nil
}
backup := filepath.Join(dir, filepath.Base(target)+".bak")
if _, err := os.Stat(backup); err == nil {
_ = os.Remove(backup)
}
if err := os.Rename(target, backup); err != nil {
return fmt.Errorf("unable to rename target file: %v", err)
}
return nil
}