Joseph Richey
d2ca7695e3
Fixes #216 This also adds two minor CI improvements: - Do a full link on `freebsd` - Build, Link, but don't run on `illumos` - Use the stable toolchain for our Tier 2 Build-only targets - Build (via `build-std`) for Tier 3 targets: `openbsd`, `dragonfly`, `haiku` Signed-off-by: Joe Richey <joerichey@google.com>
31 lines
1.1 KiB
Rust
31 lines
1.1 KiB
Rust
// Copyright 2021 Developers of the Rand project.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//! Implementation for DragonFly BSD
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use crate::{
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use_file,
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util_libc::{sys_fill_exact, Weak},
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Error,
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};
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use core::mem::MaybeUninit;
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pub fn getrandom_inner(dest: &mut [MaybeUninit<u8>]) -> Result<(), Error> {
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static GETRANDOM: Weak = unsafe { Weak::new("getrandom\0") };
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type GetRandomFn = unsafe extern "C" fn(*mut u8, libc::size_t, libc::c_uint) -> libc::ssize_t;
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// getrandom(2) was introduced in DragonflyBSD 5.7
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if let Some(fptr) = GETRANDOM.ptr() {
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let func: GetRandomFn = unsafe { core::mem::transmute(fptr) };
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return sys_fill_exact(dest, |buf| unsafe {
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func(buf.as_mut_ptr() as *mut u8, buf.len(), 0)
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});
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} else {
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use_file::getrandom_inner(dest)
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}
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}
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