⬢ DragonFlyBSD Kernel Audit
DF-2295 / prep_guest.sh
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#!/bin/sh
# prep_guest.sh -- one-time guest preparation for the fwdev.c rig.
# Files are expected in /root/fw (pushed from the host).
set -e
cd /root/fw

# 1. install harness into the kernel source tree (guest /usr/src is the
#    build scratch; the host-side sys/ tree is never modified)
install -m 644 fwharness.c fwharness.h /usr/src/sys/bus/firewire/
grep -q fwharness.c /usr/src/sys/conf/files || \
    printf 'bus/firewire/fwharness.c\toptional fwharness\n' >> /usr/src/sys/conf/files
if [ ! -f /usr/src/sys/config/FWH ]; then
    cp /usr/src/sys/config/X86_64_GENERIC /usr/src/sys/config/FWH
    printf '\n# fwdev.c audit rig (DF-2293..96)\ndevice\t\tfwharness\n' \
        >> /usr/src/sys/config/FWH
fi

# 2. panic behavior: auto-reboot, no ddb
grep -q debugger_on_panic /etc/sysctl.conf || \
    echo 'debug.debugger_on_panic=0' >> /etc/sysctl.conf
sysctl debug.debugger_on_panic=0

# 3. operator-group test user
pw useradd -n opuser -m -G operator -w none 2>/dev/null || true
id opuser

# 4. build userland PoCs
cc -O -Wall -o poc_2293 poc_2293.c
cc -O -Wall -o poc_2294 poc_2294.c
cc -O -Wall -o poc_2295 poc_2295.c
cc -O -Wall -o poc_2296 poc_2296.c
cc -O -Wall -o fwhctl fwhctl.c
ls -l poc_2293 poc_2294 poc_2295 poc_2296 fwhctl
echo PREP_OK