From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- vendor/getrandom/src/solaris_illumos.rs | 47 +++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 vendor/getrandom/src/solaris_illumos.rs (limited to 'vendor/getrandom/src/solaris_illumos.rs') diff --git a/vendor/getrandom/src/solaris_illumos.rs b/vendor/getrandom/src/solaris_illumos.rs new file mode 100644 index 000000000..2d1b767bb --- /dev/null +++ b/vendor/getrandom/src/solaris_illumos.rs @@ -0,0 +1,47 @@ +// Copyright 2018 Developers of the Rand project. +// +// Licensed under the Apache License, Version 2.0 or the MIT license +// , at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +//! Implementation for the Solaris family +//! +//! Read from `/dev/random`, with chunks of limited size (256 bytes). +//! `/dev/random` uses the Hash_DRBG with SHA512 algorithm from NIST SP 800-90A. +//! `/dev/urandom` uses the FIPS 186-2 algorithm, which is considered less +//! secure. We choose to read from `/dev/random`. +//! +//! Since Solaris 11.3 and mid-2015 illumos, the `getrandom` syscall is available. +//! To make sure we can compile on both Solaris and its derivatives, as well as +//! function, we check for the existence of getrandom(2) in libc by calling +//! libc::dlsym. +use crate::{ + use_file, + util_libc::{sys_fill_exact, Weak}, + Error, +}; +use core::mem; + +#[cfg(target_os = "illumos")] +type GetRandomFn = unsafe extern "C" fn(*mut u8, libc::size_t, libc::c_uint) -> libc::ssize_t; +#[cfg(target_os = "solaris")] +type GetRandomFn = unsafe extern "C" fn(*mut u8, libc::size_t, libc::c_uint) -> libc::c_int; + +pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> { + static GETRANDOM: Weak = unsafe { Weak::new("getrandom\0") }; + if let Some(fptr) = GETRANDOM.ptr() { + let func: GetRandomFn = unsafe { mem::transmute(fptr) }; + // 256 bytes is the lowest common denominator across all the Solaris + // derived platforms for atomically obtaining random data. + for chunk in dest.chunks_mut(256) { + sys_fill_exact(chunk, |buf| unsafe { + func(buf.as_mut_ptr(), buf.len(), 0) as libc::ssize_t + })? + } + Ok(()) + } else { + use_file::getrandom_inner(dest) + } +} -- cgit v1.2.3