getrandom 0.3.1

A small cross-platform library for retrieving random data from system source
Documentation 
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//! Implementation for Linux / Android without `/dev/urandom` fallback
use crate::Error;
use core::mem::MaybeUninit;

pub use crate::util::{inner_u32, inner_u64};

#[path = "../util_libc.rs"]
mod util_libc;

#[cfg(not(any(target_os = "android", target_os = "linux")))]
compile_error!("`linux_getrandom` backend can be enabled only for Linux/Android targets!");

pub fn fill_inner(dest: &mut [MaybeUninit<u8>]) -> Result<(), Error> {
    util_libc::sys_fill_exact(dest, |buf| unsafe {
        libc::getrandom(buf.as_mut_ptr().cast(), buf.len(), 0)
    })
}