1 // Copyright 2018 Developers of the Rand project.
2 //
3 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
4 // https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
5 // <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
6 // option. This file may not be copied, modified, or distributed
7 // except according to those terms.
8 
9 //! Implementation for WASI
10 use crate::Error;
11 use core::num::NonZeroU32;
12 use wasi::random_get;
13 
getrandom_inner(dest: &mut [u8]) -> Result<(), Error>14 pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
15     unsafe { random_get(dest.as_mut_ptr(), dest.len()) }.map_err(|e: wasi::Error| {
16         // convert wasi's Error into getrandom's NonZeroU32 error
17         NonZeroU32::new(e.raw_error() as u32).unwrap().into()
18     })
19 }
20