replace syscall::mkdir() with std::fs::create_dir_all()

crates/nit/src/system/mod.rs

@@ -81,7 +81,10 @@ impl Mount {
                 "Making directory: {target}",
                 target = self.target.display()
             ));
-            syscall::mkdir(&self.target)?;
+            std::fs::create_dir_all(&self.target).context(format_args!(
+                "could not create directory: {target}",
+                target = self.target.display()
+            ))?;
         }
 
         dmesg(format!(

crates/nit/src/system/syscall.rs

@@ -89,21 +89,6 @@ pub fn mount(
     }
 }
 
-pub fn mkdir(path: impl AsRef<Path>) -> Result<()> {
-    let path = path.as_ref();
-    let path_cs = CString::new(path.as_os_str().as_encoded_bytes())
-        .context(format_args!("bad path: {path}", path = path.display()))?;
-
-    match unsafe { libc::mkdir(path_cs.as_ptr(), 0o755) } {
-        0 => Ok(()),
-        -1 => ctx_os_error(format_args!(
-            "error calling mkdir({path}, 0o755)",
-            path = path.display()
-        )),
-        n => unreachable!("mount() syscall returned bad value: {n}"),
-    }
-}
-
 pub fn freopen(path: impl AsRef<Path>, mode: impl AsRef<str>, fd: &impl AsRawFd) -> Result<()> {
     let path = path.as_ref();
     let mode = mode.as_ref();