adamhooper

import errno
import sys
from dataclasses import dataclass

import pyroute2


@dataclass(frozen=True)
class NetworkConfig:
    """

adamhooper

#!/bin/bash

set -e

CHROOT=/var/lib/workbench/chroot  # Empty
BASE_LAYER=/var/lib/workbench/chroot-base  # already populated with /etc, /lib, /usr...
CHROOT_SIZE=20G  # max size of user edits
VENV_PATH="/root/.local/share/virtualenvs" # only exits in dev

# /app/common (base layer)

adamhooper

import os
import socket
from c_clone import libc_clone

# Primer on global variables: we set these before clone(), so they're set in
# both the spawner process and the child process. Set them to None when they're
# no longer needed, to make code easier to read.
#
# Primer on pipes: `os.pipe()` creates two file descriptors: a "read" and a
# "write". Data written to the "write" end can (and must) be read by the "read"

adamhooper

import ctypes
import os
import signal
from typing import Callable

libc = ctypes.CDLL("libc.so.6", use_errno=True)

# <linux/prctl.h>
PR_SET_NAME = 15
PR_SET_SECCOMP = 22

adamhooper

<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
  <dir prefix="default">.</dir>
</fontconfig>

adamhooper

#!/usr/bin/env node
'use strict'

const fs = require('fs')
const util = require('util')

const paths = []
for (let i = 1; i <= 20000; i++) {
  paths.push(`small-files/${i}.txt`)
}

adamhooper

#!/usr/bin/env python3

import email.message
import mailbox

# Just ignore these lines.
# Python's mbox reader finds a way to return Messages that don't
# have these super-important methods. This hack adds them.
setattr(email.message.Message, '_find_body', email.message.MIMEPart._find_body)
setattr(email.message.Message, '_body_types', email.message.MIMEPart._body_types)

adamhooper

require 'net/http'
#require 'timeout'
require 'mysql2' # https://github.com/brianmario/mysql2

def download_to_database(url, sql_statement)
  res = Net::HTTP.start(
    url.host,
    url.port,
    use_ssl: url.scheme == 'https',
    open_timeout: 5,

adamhooper

require 'net/http'
require 'timeout'
require 'mysql2' # https://github.com/brianmario/mysql2

def download_to_database(url, sql_statement)
  Timeout::timeout(5) do # BUG. Never do this.
    res = Net::HTTP.get_response(url)
    sql_statement.execute(url.to_s, res.code, res.body)
  end
end

adamhooper

class Supplier < ActiveRecord::Base
end