pkg/fileutils: ReadSymlinkedDirectory: preserve underlying error
We were discarding the underlying error, which made it impossible for callers to detect (e.g.) an os.ErrNotExist. Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
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24e371c812
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4fa853f5de
2 changed files with 7 additions and 6 deletions
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@ -34,18 +34,16 @@ func CopyFile(src, dst string) (int64, error) {
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// ReadSymlinkedDirectory returns the target directory of a symlink.
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// The target of the symbolic link may not be a file.
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func ReadSymlinkedDirectory(path string) (string, error) {
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var realPath string
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var err error
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func ReadSymlinkedDirectory(path string) (realPath string, err error) {
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if realPath, err = filepath.Abs(path); err != nil {
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return "", fmt.Errorf("unable to get absolute path for %s: %s", path, err)
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return "", fmt.Errorf("unable to get absolute path for %s: %w", path, err)
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}
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if realPath, err = filepath.EvalSymlinks(realPath); err != nil {
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return "", fmt.Errorf("failed to canonicalise path for %s: %s", path, err)
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return "", fmt.Errorf("failed to canonicalise path for %s: %w", path, err)
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}
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realPathInfo, err := os.Stat(realPath)
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if err != nil {
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return "", fmt.Errorf("failed to stat target '%s' of '%s': %s", realPath, path, err)
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return "", fmt.Errorf("failed to stat target '%s' of '%s': %w", realPath, path, err)
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}
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if !realPathInfo.Mode().IsDir() {
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return "", fmt.Errorf("canonical path points to a file '%s'", realPath)
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@ -160,6 +160,9 @@ func TestReadSymlinkedDirectoryNonExistingSymlink(t *testing.T) {
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if err == nil {
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t.Errorf("error expected for non-existing symlink")
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}
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if !errors.Is(err, os.ErrNotExist) {
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t.Errorf("Expected an os.ErrNotExist, got: %v", err)
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}
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if symLinkedPath != "" {
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t.Fatalf("expected empty path, but '%s' was returned", symLinkedPath)
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}
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