| //! Implementation for DragonFly BSD |
| use crate::{ |
| use_file, |
| util_libc::{sys_fill_exact, Weak}, |
| Error, |
| }; |
| use core::mem::MaybeUninit; |
| |
| pub fn getrandom_inner(dest: &mut [MaybeUninit<u8>]) -> Result<(), Error> { |
| static GETRANDOM: Weak = unsafe { Weak::new("getrandom\0") }; |
| type GetRandomFn = unsafe extern "C" fn(*mut u8, libc::size_t, libc::c_uint) -> libc::ssize_t; |
| |
| // getrandom(2) was introduced in DragonflyBSD 5.7 |
| if let Some(fptr) = GETRANDOM.ptr() { |
| let func: GetRandomFn = unsafe { core::mem::transmute(fptr) }; |
| return sys_fill_exact(dest, |buf| unsafe { |
| func(buf.as_mut_ptr() as *mut u8, buf.len(), 0) |
| }); |
| } else { |
| use_file::getrandom_inner(dest) |
| } |
| } |