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34e67e3510
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.
31 lines
730 B
Go
31 lines
730 B
Go
//go:build windows
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// +build windows
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package selfupdate
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import (
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"fmt"
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"os"
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"path/filepath"
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"github.com/restic/restic/internal/errors"
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)
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// Rename (rather than remove) the running version. The running binary will be locked
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// on Windows and cannot be removed while still executing.
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func removeResticBinary(dir, target string) error {
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// nothing to do if the target does not exist
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if _, err := os.Stat(target); errors.Is(err, os.ErrNotExist) {
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return nil
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}
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backup := filepath.Join(dir, filepath.Base(target)+".bak")
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if _, err := os.Stat(backup); err == nil {
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_ = os.Remove(backup)
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}
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if err := os.Rename(target, backup); err != nil {
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return fmt.Errorf("unable to rename target file: %v", err)
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}
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return nil
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}
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