[thristian]

For automated tools that can convert a C codebase to Rust, you're looking for is Corrode: https://github.com/jameysharp/corrode

Last I heard, Corrode can convert many C syntactic structures into their Rust equivalents, they usually compile and sometimes they even work. Even when the conversion works flawlessly, the resulting Rust does exactly what the original C code did—there's no safety benefit (but you can begin refactoring to clean things up).