fix(init): avoid TOCTTOU bug on syntax CSS dir

Fixes rust-lang#1652 (comment)
notriddle · Sep 28, 2021 · 1b24bd9 · 1b24bd9
1 parent fbc4562
commit 1b24bd9
Showing 1 changed file with 1 addition and 3 deletions.
diff --git a/src/book/init.rs b/src/book/init.rs
@@ -152,9 +152,7 @@ impl BookBuilder {
         js.write_all(theme::JS)?;
 
         let syntax_dir = cssdir.join("syntax");
-        if !syntax_dir.exists() {
-            fs::create_dir(&syntax_dir)?;
-        }
+        fs::create_dir_all(syntax_dir)?;
 
         let mut highlight_css = File::create(syntax_dir.join("light.css"))?;
         highlight_css.write_all(theme::SYNTAX_LIGHT_CSS)?;