fix(initrd): Add additional check of file type

Signed-off-by: Alexander Jung <[email protected]>
unikraft · Nov 19, 2024 · 0f92d3a · 0f92d3a
1 parent f36a514
commit 0f92d3a
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/initrd/dockerfile.go b/initrd/dockerfile.go
@@ -178,6 +178,13 @@ func NewFromDockerfile(ctx context.Context, path string, opts ...InitrdOption) (
 		return nil, fmt.Errorf("file is not a Dockerfile")
 	}
 
+	fi, err := os.Stat(path)
+	if err != nil {
+		return nil, fmt.Errorf("could not check Dockerfile: %w", err)
+	} else if fi.IsDir() {
+		return nil, fmt.Errorf("supplied path %s is a directory not a Dockerfile", path)
+	}
+
 	initrd := dockerfile{
 		opts: InitrdOptions{
 			workdir: filepath.Dir(path),