Files
frigate/docker/main/rootfs/etc/s6-overlay/s6-rc.d/prepare/run
T
Josh HawkinsandNicolas Mowen 41bc1a5844 Container security hardening (phase 4) (#24140)
* Support read-only rootfs with self-signed certs in /config/tls

* Support read-only rootfs in s6 and pre-compile bytecode

* Assert read-only rootfs support in CI

* Document hardened read-only deployment

* keep certsync's cert selection identical to nginx's

* note the uid trade-off in user: mode

* fail fast when EXTRA_GROUPS or a missing media volume meets read_only

* keep nosuid and nodev on the /run tmpfs

* support read_only in the default mode

* don't take go2rtc down when the homekit file isn't writable

* lead with the hardware consequence of switching to user:

* refuse to write TLS material through a symlink as root

* note that memryx writes models to the root filesystem

* certsync watches whichever cert path nginx loaded
2026-09-12 07:30:04 -06:00

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#!/command/with-contenv bash
# shellcheck shell=bash
# Do preparation tasks before starting the main services
set -o errexit -o nounset -o pipefail
function migrate_addon_config_dir() {
local home_assistant_config_dir="/homeassistant"
if ! mountpoint --quiet "${home_assistant_config_dir}"; then
# Not running as a Home Assistant Add-on
return 0
fi
local config_dir="/config"
local new_config_file="${config_dir}/config.yml"
local new_config_file_yaml="${new_config_file//.yml/.yaml}"
if [[ -f "${new_config_file_yaml}" || -f "${new_config_file}" ]]; then
# Already migrated
return 0
fi
local old_config_file="${home_assistant_config_dir}/frigate.yml"
local old_config_file_yaml="${old_config_file//.yml/.yaml}"
if [[ -f "${old_config_file}" ]]; then
:
elif [[ -f "${old_config_file_yaml}" ]]; then
old_config_file="${old_config_file_yaml}"
new_config_file="${new_config_file_yaml}"
else
# Nothing to migrate
return 0
fi
unset old_config_file_yaml new_config_file_yaml
echo "[INFO] Starting migration from Home Assistant config dir to Add-on config dir..." >&2
local db_path
db_path=$(yq -r '.database.path' "${old_config_file}")
if [[ "${db_path}" == "null" ]]; then
db_path="${config_dir}/frigate.db"
fi
if [[ "${db_path}" == "${config_dir}/"* ]]; then
# replace /config/ prefix with /homeassistant/
local old_db_path="${home_assistant_config_dir}/${db_path:8}"
if [[ -f "${old_db_path}" ]]; then
local new_db_dir
new_db_dir="$(dirname "${db_path}")"
echo "[INFO] Migrating database from '${old_db_path}' to '${new_db_dir}' dir..." >&2
mkdir -vp "${new_db_dir}"
mv -vf "${old_db_path}" "${new_db_dir}"
local db_file
for db_file in "${old_db_path}"-shm "${old_db_path}"-wal; do
if [[ -f "${db_file}" ]]; then
mv -vf "${db_file}" "${new_db_dir}"
fi
done
unset db_file
fi
fi
local config_entry
for config_entry in .model.path .model.labelmap_path .ffmpeg.path .mqtt.tls_ca_certs .mqtt.tls_client_cert .mqtt.tls_client_key; do
local config_entry_path
config_entry_path=$(yq -r "${config_entry}" "${old_config_file}")
if [[ "${config_entry_path}" == "${config_dir}/"* ]]; then
# replace /config/ prefix with /homeassistant/
local old_config_entry_path="${home_assistant_config_dir}/${config_entry_path:8}"
if [[ -f "${old_config_entry_path}" ]]; then
local new_config_entry_entry
new_config_entry_entry="$(dirname "${config_entry_path}")"
echo "[INFO] Migrating ${config_entry} from '${old_config_entry_path}' to '${config_entry_path}'..." >&2
mkdir -vp "${new_config_entry_entry}"
mv -vf "${old_config_entry_path}" "${config_entry_path}"
fi
fi
done
local old_model_cache_path="${home_assistant_config_dir}/model_cache"
if [[ -d "${old_model_cache_path}" ]]; then
echo "[INFO] Migrating '${old_model_cache_path}' to '${config_dir}'..." >&2
mv -f "${old_model_cache_path}" "${config_dir}"
fi
echo "[INFO] Migrating other files from '${home_assistant_config_dir}' to '${config_dir}'..." >&2
local file
for file in .exports .jwt_secret .timeline .vacuum go2rtc; do
file="${home_assistant_config_dir}/${file}"
if [[ -f "${file}" ]]; then
mv -vf "${file}" "${config_dir}"
fi
done
echo "[INFO] Migrating config file from '${old_config_file}' to '${new_config_file}'..." >&2
mv -vf "${old_config_file}" "${new_config_file}"
echo "[INFO] Migration from Home Assistant config dir to Add-on config dir completed." >&2
}
function migrate_db_from_media_to_config() {
# Find config file in yml or yaml, but prefer yml
local config_file="${CONFIG_FILE:-"/config/config.yml"}"
local config_file_yaml="${config_file//.yml/.yaml}"
if [[ -f "${config_file}" ]]; then
:
elif [[ -f "${config_file_yaml}" ]]; then
config_file="${config_file_yaml}"
else
# Frigate will create the config file on startup
return 0
fi
unset config_file_yaml
local user_db_path
user_db_path=$(yq -r '.database.path' "${config_file}")
if [[ "${user_db_path}" == "null" ]]; then
local old_db_path="/media/frigate/frigate.db"
local new_db_dir="/config"
if [[ -f "${old_db_path}" ]]; then
echo "[INFO] Migrating database from '${old_db_path}' to '${new_db_dir}' dir..." >&2
if mountpoint --quiet "${new_db_dir}"; then
# /config is a mount point, move the db
mv -vf "${old_db_path}" "${new_db_dir}"
local db_file
for db_file in "${old_db_path}"-shm "${old_db_path}"-wal; do
if [[ -f "${db_file}" ]]; then
mv -vf "${db_file}" "${new_db_dir}"
fi
done
unset db_file
else
echo "[ERROR] Trying to migrate the database path from '${old_db_path}' to '${new_db_dir}' dir, but '${new_db_dir}' is not a mountpoint, please mount the '${new_db_dir}' dir" >&2
return 1
fi
fi
fi
}
# remove leftover from last run, not normally needed, but just in case
# used by the docker healthcheck
rm -f /dev/shm/.frigate-is-stopping
migrate_addon_config_dir
migrate_db_from_media_to_config
# Align volume ownership with the runtime user (one sweep per PUID/schema
# change, guarded by the sentinel; see fix-ownership). The escape hatch
# deletes the sentinel instead: ownership is never mutated while it is on,
# so the next non-root boot must re-sweep whatever root created meanwhile.
if [[ "$(id -u)" -eq 0 ]]; then
if [[ "${FRIGATE_RUN_AS_ROOT:-false}" == "true" ]]; then
rm -f /config/.permissions_version
else
# Only when a mount backs /media/frigate itself: under a parent /media
# mount, a dedicated volume added later would be shadowed and skipped
sentinel_args=(--sentinel /config/.permissions_version)
root_services_mode=""
if [[ -n "${FRIGATE_ROOT_SERVICES:-}" ]]; then
# || true: an all-empty list (",") fails grep -v and errexit would kill the boot
root_services_mode=$(tr ',' '\n' <<< "${FRIGATE_ROOT_SERVICES//[[:space:]]/}" | grep -v '^$' | sort -u | paste -sd, - || true)
if [[ -n "$root_services_mode" ]]; then
sentinel_args+=(--mode "$root_services_mode")
fi
fi
if ! awk '$2 == "/media/frigate" || $2 ~ /^\/media\/frigate\//' /proc/mounts | grep -q .; then
sentinel_args=()
fi
/usr/local/bin/fix-ownership "${sentinel_args[@]}" \
"${PUID:-1000}" "${PGID:-1000}" /config /media/frigate
# Root services write clips stragglers and caches mid-run; realign the
# small trees every boot. Recordings are chowned at create instead.
if [[ -n "$root_services_mode" ]]; then
# only sweep what exists; clips and exports appear after the first run
boot_sweep_paths=(/config)
for extra in /media/frigate/clips /media/frigate/exports; do
if [[ -d "$extra" ]]; then
boot_sweep_paths+=("$extra")
fi
done
/usr/local/bin/fix-ownership \
"${PUID:-1000}" "${PGID:-1000}" "${boot_sweep_paths[@]}"
fi
fi
fi
# Must stay after the sweep, which reads an absent /media/frigate as an
# unmounted volume rather than a swept one
if [[ "$(id -u)" -eq 0 && ! -d /media/frigate ]]; then
# The image does not ship this directory, so on a read-only rootfs it can
# only come from a mount. Report that rather than failing under errexit.
if ! mkdir -p /media/frigate 2>/dev/null; then
echo "[ERROR] /media/frigate does not exist and could not be created, which is what happens with read_only: true and no recordings volume." >&2
echo "[ERROR] Mount a volume at /media/frigate." >&2
echo "[ERROR] See https://docs.frigate.video/configuration/non_root for the compatibility matrix." >&2
exit 1
fi
if [[ "${FRIGATE_RUN_AS_ROOT:-false}" != "true" ]]; then
chown "${PUID:-1000}:${PGID:-1000}" /media/frigate
fi
fi
# usually a tmpfs mount: root-owned on arrival and outside the swept volumes
if [[ "$(id -u)" -eq 0 && "${FRIGATE_RUN_AS_ROOT:-false}" != "true" ]]; then
mkdir -p /tmp/cache
chown "${PUID:-1000}:${PGID:-1000}" /tmp/cache
fi