| //! Implementation for WASI | |
| use crate::Error; | |
| use core::{ | |
| mem::MaybeUninit, | |
| num::{NonZeroU16, NonZeroU32}, | |
| }; | |
| use wasi::random_get; | |
| pub fn getrandom_inner(dest: &mut [MaybeUninit<u8>]) -> Result<(), Error> { | |
| unsafe { random_get(dest.as_mut_ptr() as *mut u8, dest.len()) }.map_err(|e| { | |
| // The WASI errno will always be non-zero, but we check just in case. | |
| match NonZeroU16::new(e.raw()) { | |
| Some(r) => Error::from(NonZeroU32::from(r)), | |
| None => Error::ERRNO_NOT_POSITIVE, | |
| } | |
| }) | |
| } |