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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /vendor/getrandom-0.1.14/src/windows.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/getrandom-0.1.14/src/windows.rs')
-rw-r--r-- | vendor/getrandom-0.1.14/src/windows.rs | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/vendor/getrandom-0.1.14/src/windows.rs b/vendor/getrandom-0.1.14/src/windows.rs new file mode 100644 index 000000000..e1b8df663 --- /dev/null +++ b/vendor/getrandom-0.1.14/src/windows.rs @@ -0,0 +1,26 @@ +// 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 Windows +use crate::{error::RTL_GEN_RANDOM_FAILED, Error}; + +extern "system" { + #[link_name = "SystemFunction036"] + fn RtlGenRandom(RandomBuffer: *mut u8, RandomBufferLength: u32) -> u8; +} + +pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> { + // Prevent overflow of u32 + for chunk in dest.chunks_mut(u32::max_value() as usize) { + let ret = unsafe { RtlGenRandom(chunk.as_mut_ptr(), chunk.len() as u32) }; + if ret == 0 { + return Err(RTL_GEN_RANDOM_FAILED); + } + } + Ok(()) +} |