Function mi_realpath

pub unsafe extern "C" fn mi_realpath(
    fname: *const c_char,
    resolved_name: *mut c_char,
) -> *mut c_char

Resolve a file path name, producing a C string which can be passed to mi_free.

resolved_name should be null, but can also point to a buffer of at least PATH_MAX bytes.

If successful, returns a pointer to the resolved absolute file name, or null on failure (with errno set to the error code).

If resolved_name was null, the returned result should be freed with mi_free.

This can rarely be useful in FFI code, but is mostly included for completeness.