harrisonturton

#!/bin/bash
# Harrison Turton 2018

# --------------------------------------
# This script will automatically detect your
# operating system, and build accordingly.
#
# A build mode flag can be included, wherein
# the script will supply the relevant build
# mode flags to gnatmake. Defaults to

harrisonturton

package main

import (
	"errors"
	"github.com/streadway/amqp"
	"log"
	"os"
	"time"
)

harrisonturton

#![feature(generic_associated_types)]

use anyhow::Error;
use async_trait::async_trait;
use tokio_postgres::{row::Row, types::ToSql};

/// This is an example of how to abstract Rust database libraries (e.g. tokio-postgres)
/// behind a trait. This is useful to swap out a concrete implementation with a fake,
/// or for changing the underlying database implementation (e.g. switching to sqlx)
/// without needing to update the consumers of this module.

harrisonturton

use nix::errno::Errno;
use nix::fcntl::{open, OFlag};
use nix::ioctl_write_int;
use nix::libc::{__c_anonymous_ifr_ifru, c_char, c_short, ifreq, IFNAMSIZ};
use nix::sys::stat::Mode;
use nix::unistd::close;
use std::ffi::{CString, NulError};
use std::os::fd::RawFd;
use std::ptr::copy_nonoverlapping;

harrisonturton

/*
 * This follows the LWN tutorial "Using the KVM API":
 *
 *   https://lwn.net/Articles/658511/
 *
 * Which runs a virtual machine that executes the following
 * 16-bit x86 code (the assembled binary is hardcoded in):
 *
 *   mov $0x3f8, %dx
 *   add %bl, %al

harrisonturton

/*
 * Author: Harrison Turton <[email protected]>
 *
 * This follows the LWN article "Creating Linux virtual filesystems":
 *
 *   https://lwn.net/Articles/57369/
 *
 * However, this was published in 2003. The VFS has changed quite a
 * bit since then, and so the code had to be tweaked to work. So
 * isn't a byte-for-byte copy, I had to go digging through the kernel

harrisonturton

COPTS=-std=c++17 -Wall
INCLUDE=-I/usr/local/include/jxl/ -L/usr/local/lib/
LIBS=-ljxl -ljxl_threads
BIN=main

$(BIN): main.cc
	clang++ $(COPTS) $(INCLUDE) $(LIBS) -o $@ $<

.PHONY: clean
clean:

harrisonturton

#include <errno.h>
#include <fcntl.h>
#include <linux/io_uring.h>
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/syscall.h>