diff options
Diffstat (limited to 'vendor/getrandom/src/wasi.rs')
-rw-r--r-- | vendor/getrandom/src/wasi.rs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/vendor/getrandom/src/wasi.rs b/vendor/getrandom/src/wasi.rs new file mode 100644 index 000000000..2d413e020 --- /dev/null +++ b/vendor/getrandom/src/wasi.rs @@ -0,0 +1,23 @@ +// Copyright 2018 Developers of the Rand project. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +//! Implementation for WASI +use crate::Error; +use core::num::NonZeroU32; +use wasi::random_get; + +pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> { + unsafe { + random_get(dest.as_mut_ptr(), dest.len()).map_err(|e: wasi::Error| { + // convert wasi's Error into getrandom's NonZeroU32 error + // SAFETY: `wasi::Error` is `NonZeroU16` internally, so `e.raw_error()` + // will never return 0 + NonZeroU32::new_unchecked(e.raw_error() as u32).into() + }) + } +} |