# What the job can see of the machine (docs/m0.md §2).
echo "kernel: $(uname -r), cpus: $(nproc), user: $(id -u)"
echo "interfaces: $(tail -n +3 /proc/net/dev | cut -d: -f1 | tr -d ' ' | tr '\n' ' ')"
if wget -q -T 3 -O /dev/null http://1.1.1.1 2>/dev/null; then echo "network reachable: not isolated" >&2; exit 1; fi
echo "no network"
if touch /etc/flow-probe 2>/dev/null; then echo "rootfs writable" >&2; exit 1; fi
echo "rootfs read-only"