#!/bin/sh
# DF-0181 — driver: invokes df0181_trigger (self-contained).
# Run as root (host root).
#   - trigger forks helper (host root)
#   - parent jail(2) attaches to new jail
#   - helper clears jail.<jid>.sys_set_hostname=0 from outside
#   - parent (jailed) issues sysctl -w kern.hostname=evil -> EPERM -> leaks XLOCK
#   - helper probes host sysctl with 5s alarm
set -u
cd "$(dirname "$0")"
./df0181_trigger