Function readdir_r

pub unsafe extern "C" fn readdir_r(dirp: *mut DIR, entry: *mut dirent, result: *mut *mut dirent) -> c_int

The 64-bit libc on Solaris and illumos only has readdir_r. If a 32-bit Solaris or illumos target is ever created, it should use __posix_readdir_r. See libc(3LIB) on Solaris or illumos: