fn free()

in src/enclave_proc/resource_manager.rs [254:275]

• 18 lines of code
• 4 McCabe index (conditional complexity)

    fn free(&mut self) -> NitroCliResult<()> {
        // Do nothing if the region has already been freed.
        if self.mem_addr == 0 {
            return Ok(());
        }

        let rc =
            unsafe { libc::munmap(self.mem_addr as *mut libc::c_void, self.mem_size as usize) };

        if rc < 0 {
            return Err(new_nitro_cli_failure!(
                "Failed to unmap memory",
                NitroCliErrorEnum::EnclaveMunmapError
            ));
        }

        // Set the address and length to 0 to avoid double-freeing.
        self.mem_addr = 0;
        self.mem_size = 0;

        Ok(())
    }