sbin/start-networking

   1 #!/bin/bash
   2
   3 # This replaces the old init.d script, and is run from the networking.service
   4 # Only has start, stop, reload, because that's all systemd has.
   5 # restart is implemented in systemd by stop then start.
   6
   7 PATH="/sbin:/bin"
   8 RUN_DIR="/run/network"
   9 IFSTATE_LOCKFILE="${RUN_DIR}/ifstatelock"
  10
  11 STATE_DIR="/var/tmp/network"
  12 IFSTATE_FILE="${STATE_DIR}/ifstatenew"
  13
  14 NAME=networking
  15
  16 [ -x /sbin/ifup ] || exit 0
  17 [ -x /sbin/ifdown ] || exit 0
  18
  19 CONFIGURE_INTERFACES=yes
  20
  21 EXTRA_ARGS=
  22
  23 [ -f /etc/default/networking ] && . /etc/default/networking
  24
  25 [ "$VERBOSE" = yes ] && EXTRA_ARGS=-v
  26 [ "$DEBUG" = yes ] && EXTRA_ARGS="$EXTRA_ARGS -d"
  27 [ "$SYSLOG" = yes ] && EXTRA_ARGS="$EXTRA_ARGS --syslog"
  28
  29 perf_options() {
  30     # At bootup lets set perfmode
  31     [ -f ${IFSTATE_LOCKFILE} ] && echo -n "" && return
  32
  33     echo -n "--perfmode"
  34 }
  35
  36 process_exclusions() {
  37     set -- $EXCLUDE_INTERFACES
  38     exclusions=""
  39     for d
  40     do
  41         exclusions="-X $d $exclusions"
  42     done
  43     echo $exclusions
  44 }
  45
  46 check_network_file_systems() {
  47     [ -e /proc/mounts ] || return 0
  48
  49     if [ -e /etc/iscsi/iscsi.initramfs ]; then
  50         echo ${NAME}':' "not deconfiguring network interfaces: iSCSI root is mounted."
  51         exit 0
  52     fi
  53
  54     while read DEV MTPT FSTYPE REST; do
  55         case $DEV in
  56         /dev/nbd*|/dev/nd[a-z]*|/dev/etherd/e*)
  57             echo ${NAME}':' "not deconfiguring network interfaces: network devices still mounted."
  58             exit 0
  59             ;;
  60         esac
  61         case $FSTYPE in
  62         nfs|nfs4|smbfs|ncp|ncpfs|cifs|coda|ocfs2|gfs|pvfs|pvfs2|fuse.httpfs|fuse.curlftpfs)
  63             echo ${NAME}':' "not deconfiguring network interfaces: network file systems still mounted."
  64             exit 0
  65             ;;
  66         esac
  67     done < /proc/mounts
  68 }
  69
  70 check_network_swap() {
  71     [ -e /proc/swaps ] || return 0
  72
  73     while read DEV MTPT FSTYPE REST; do
  74         case $DEV in
  75         /dev/nbd*|/dev/nd[a-z]*|/dev/etherd/e*)
  76             echo ${NAME}':' "not deconfiguring network interfaces: network swap still mounted."
  77             exit 0
  78             ;;
  79         esac
  80     done < /proc/swaps
  81 }
  82
  83 ifup_hotplug () {
  84     if [ -d /sys/class/net ]
  85     then
  86             ifaces=$(for iface in $(ifquery --list --allow=hotplug 2>/dev/null)
  87                             do
  88                                     link=${iface##:*}
  89                                     link=${link##.*}
  90                                     if [ -e "/sys/class/net/$link" ]
  91                                     then
  92                                         echo "$iface"
  93                                     fi
  94                             done)
  95             if [ -n "$ifaces" ]
  96             then
  97                 ifup $ifaces "$@" || true
  98             fi
  99     fi
 100 }
 101
 102 ifup_mgmt () {
 103         ifaces=$(ifquery --list --allow=mgmt 2>/dev/null)
 104         if [ -n "$ifaces" ]; then
 105                 echo "bringing up mgmt class interfaces"
 106                 ifup --allow=mgmt
 107         fi
 108 }
 109
 110 ifupdown_init() {
 111         # remove state file at boot
 112         [ ! -e ${IFSTATE_LOCKFILE} ] && rm -f ${IFSTATE_FILE}
 113
 114         [ ! -e /run/network ] && mkdir -p /run/network &>/dev/null
 115         [ ! -e /etc/network/run ] && \
 116                 ln -sf /run/network /etc/network/run &>/dev/null
 117 }
 118
 119 case "$1" in
 120 start)
 121         ifupdown_init
 122         if [ "$CONFIGURE_INTERFACES" = no ]
 123         then
 124             echo ${NAME}':' "Not configuring network interfaces, see /etc/default/networking"
 125             exit 0
 126         fi
 127         set -f
 128         exclusions=$(process_exclusions)
 129         perfoptions=$(perf_options)
 130         echo ${NAME}':' "Configuring network interfaces"
 131         ifup_mgmt
 132         ifup -a $EXTRA_ARGS $exclusions $perfoptions
 133         ifup_hotplug $HOTPLUG_ARGS $EXTRA_ARGS $exclusions
 134         ;;
 135 stop)
 136         if [ "$SKIP_DOWN_AT_SYSRESET" = "yes" ]; then
 137         SYSRESET=0
 138         systemctl list-jobs | egrep -q '(shutdown|reboot|halt|poweroff)\.target'
 139         [ $? -eq 0 ] && SYSRESET=1
 140         if [ $SYSRESET -eq 1 ]; then
 141             echo ${NAME}':' "Skipping deconfiguring network interfaces"
 142             exit 0
 143         fi
 144         fi
 145         ifupdown_init
 146         check_network_file_systems
 147         check_network_swap
 148         exclusions=$(process_exclusions)
 149
 150         echo ${NAME}':' "Deconfiguring network interfaces"
 151         ifdown -a $EXTRA_ARGS $exclusions
 152         ;;
 153
 154 reload)
 155
 156         ifupdown_init
 157         exclusions=$(process_exclusions)
 158
 159         echo ${NAME}':' "Reloading network interfaces configuration"
 160         ifreload -a $EXTRA_ARGS $exclusions
 161         ;;
 162
 163 *)
 164         echo ${NAME}':' "Usage: $0 {start|stop|reload}"
 165         exit 1
 166         ;;
 167 esac
 168
 169 exit 0