| Joel Galenson | 4be0c6d | 2020-07-07 13:20:14 -0700 | [diff] [blame] | 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 | } |