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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 | ||
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 | } |