#!/bin/sh /etc/rc.common
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USE_PROCD=1
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START=25
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extra_command "uciadd" "Add default bridge configuration to network and firewall uci config"
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extra_command "ucidel" "Delete default bridge configuration from network and firewall uci config"
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DOCKERD_CONF="/tmp/dockerd/daemon.json"
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uci_quiet() {
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uci -q ${@} >/dev/null
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}
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json_add_array_string() {
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json_add_string "" "$1"
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}
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boot() {
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uciadd
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rc_procd start_service
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}
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uciupdate() {
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local net="$1"
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uci -q get network.docker >/dev/null || {
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logger -t "dockerd-init" -p warn "No network uci config section for docker default bridge (docker0) found"
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return
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}
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[ -z "$net" ] && {
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logger -t "dockerd-init" -p notice "Removing network uci config options for docker default bridge (docker0)"
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uci_quiet delete network.docker.netmask
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uci_quiet delete network.docker.ipaddr
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uci_quiet commit network
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return
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}
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eval "$(ipcalc.sh "$net")"
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logger -t "dockerd-init" -p notice "Updating network uci config option \"$net\" for docker default bridge (docker0)"
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uci_quiet set network.docker.netmask="$NETMASK"
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uci_quiet set network.docker.ipaddr="$IP"
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uci_quiet commit network
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}
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uciadd() {
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/etc/init.d/dockerd running && {
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echo "Please stop dockerd service first"
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exit 0
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}
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# Add network interface
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if ! uci -q get network.docker >/dev/null; then
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logger -t "dockerd-init" -p notice "Adding docker default interface to network uci config (docker)"
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uci_quiet add network interface
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uci_quiet rename network.@interface[-1]="docker"
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uci_quiet set network.docker.ifname="docker0"
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uci_quiet set network.docker.proto="static"
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uci_quiet set network.docker.auto="0"
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uci_quiet commit network
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fi
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# Add docker bridge device
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if ! uci -q get network.docker0 >/dev/null; then
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logger -t "dockerd-init" -p notice "Adding docker default bridge device to network uci config (docker0)"
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uci_quiet add network device
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uci_quiet rename network.@device[-1]="docker0"
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uci_quiet set network.docker0.type="bridge"
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uci_quiet set network.docker0.name="docker0"
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uci_quiet add_list network.docker0.ifname="docker0"
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uci_quiet commit network
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fi
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# Add firewall zone
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if ! uci -q get firewall.docker >/dev/null; then
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logger -t "dockerd-init" -p notice "Adding docker default firewall zone to firewall uci config (docker)"
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uci_quiet add firewall zone
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uci_quiet rename firewall.@zone[-1]="docker"
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uci_quiet set firewall.docker.network="docker"
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uci_quiet set firewall.docker.input="REJECT"
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uci_quiet set firewall.docker.output="ACCEPT"
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uci_quiet set firewall.docker.forward="REJECT"
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uci_quiet set firewall.docker.name="docker"
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uci_quiet commit firewall
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fi
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reload_config
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}
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ucidel() {
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/etc/init.d/dockerd running && {
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echo "Please stop dockerd service first"
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exit 0
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}
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logger -t "dockerd-init" -p notice "Deleting docker default bridge device from network uci config (docker0)"
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uci_quiet delete network.docker0
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uci_quiet commit network
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logger -t "dockerd-init" -p notice "Deleting docker default interface from network uci config (docker)"
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uci_quiet delete network.docker
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uci_quiet commit network
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logger -t "dockerd-init" -p notice "Deleting docker firewall zone from firewall uci config (docker)"
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uci_quiet delete firewall.docker
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uci_quiet commit firewall
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reload_config
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}
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process_config() {
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local alt_config_file data_root log_level bip
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rm -f "$DOCKERD_CONF"
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[ -f /etc/config/dockerd ] || {
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# Use the daemon default configuration
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DOCKERD_CONF=""
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return 0
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}
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config_load 'dockerd'
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config_get alt_config_file globals alt_config_file
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[ -n "$alt_config_file" ] && [ -f "$alt_config_file" ] && {
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ln -s "$alt_config_file" "$DOCKERD_CONF"
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return 0
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}
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config_get data_root globals data_root "/opt/docker/"
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config_get log_level globals log_level "warn"
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config_get bip globals bip ""
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. /usr/share/libubox/jshn.sh
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json_init
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json_add_string "data-root" "$data_root"
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json_add_string "log-level" "$log_level"
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[ -z "$bip" ] || json_add_string "bip" "$bip"
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json_add_array "registry-mirrors"
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config_list_foreach globals registry_mirrors json_add_array_string
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json_close_array
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json_add_array "hosts"
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config_list_foreach globals hosts json_add_array_string
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json_close_array
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mkdir -p /tmp/dockerd
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json_dump > "$DOCKERD_CONF"
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uciupdate "$bip"
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}
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start_service() {
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local nofile=$(cat /proc/sys/fs/nr_open)
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process_config
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procd_open_instance
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procd_set_param stderr 1
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if [ -z "$DOCKERD_CONF" ]; then
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procd_set_param command /usr/bin/dockerd
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else
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procd_set_param command /usr/bin/dockerd --config-file="$DOCKERD_CONF"
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fi
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procd_set_param limits nofile="${nofile} ${nofile}"
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procd_close_instance
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}
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reload_service() {
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process_config
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procd_send_signal dockerd
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}
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service_triggers() {
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procd_add_reload_trigger 'dockerd'
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}
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ip4tables_remove_nat() {
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iptables -t nat -D OUTPUT ! -d 127.0.0.0/8 -m addrtype --dst-type LOCAL -j DOCKER
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iptables -t nat -D PREROUTING -m addrtype --dst-type LOCAL -j DOCKER
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iptables -t nat -F DOCKER
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iptables -t nat -X DOCKER
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}
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ip4tables_remove_filter() {
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# Chain DOCKER-USER is only present,
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# if bip option is NOT set, so >/dev/null 2>&1
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iptables -t filter -D FORWARD -j DOCKER-USER >/dev/null 2>&1
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iptables -t filter -D FORWARD -j DOCKER-ISOLATION-STAGE-1
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iptables -t filter -D FORWARD -o docker0 -j DOCKER
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iptables -t filter -F DOCKER
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iptables -t filter -F DOCKER-ISOLATION-STAGE-1
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iptables -t filter -F DOCKER-ISOLATION-STAGE-2
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# Chain DOCKER-USER is only present,
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# if bip option is NOT set, so >/dev/null 2>&1
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iptables -t filter -F DOCKER-USER >/dev/null 2>&1
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iptables -t filter -X DOCKER
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iptables -t filter -X DOCKER-ISOLATION-STAGE-1
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iptables -t filter -X DOCKER-ISOLATION-STAGE-2
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# Chain DOCKER-USER is only present,
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# if bip option is NOT set, so >/dev/null 2>&1
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iptables -t filter -X DOCKER-USER >/dev/null 2>&1
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}
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ip4tables_remove() {
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ip4tables_remove_nat
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ip4tables_remove_filter
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}
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stop_service() {
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if /etc/init.d/dockerd running; then
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service_stop "/usr/bin/dockerd"
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ip4tables_remove
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fi
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}
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