ifupdown2/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 RUN_DIR="/run/network"
   8 IFSTATE_LOCKFILE="${RUN_DIR}/ifstatelock"
   9
  10 STATE_DIR="/var/tmp/network"
  11 IFSTATE_FILE="${STATE_DIR}/ifstatenew"
  12
  13 NAME=networking
  14
  15 [ -x /sbin/ifup ] || exit 0
  16 [ -x /sbin/ifdown ] || exit 0
  17
  18 CONFIGURE_INTERFACES=yes
  19
  20 EXTRA_ARGS=
  21
  22 [ -f /etc/default/networking ] && . /etc/default/networking
  23
  24 [ "$VERBOSE" = yes ] && EXTRA_ARGS=-v
  25 [ "$DEBUG" = yes ] && EXTRA_ARGS="$EXTRA_ARGS -d"
  26 [ "$SYSLOG" = yes ] && EXTRA_ARGS="$EXTRA_ARGS --syslog"
  27
  28 perf_options() {
  29     # At bootup lets set perfmode
  30     [ -f ${IFSTATE_LOCKFILE} ] && echo -n "" && return
  31
  32     echo -n "--perfmode"
  33 }
  34
  35 process_exclusions() {
  36     set -- $EXCLUDE_INTERFACES
  37     exclusions=""
  38     for d
  39     do
  40         exclusions="-X $d $exclusions"
  41     done
  42     echo $exclusions
  43 }
  44
  45 check_network_file_systems() {
  46     [ -e /proc/mounts ] || return 0
  47
  48     if [ -e /etc/iscsi/iscsi.initramfs ]; then
  49         echo ${NAME}':' "not deconfiguring network interfaces: iSCSI root is mounted."
  50         exit 0
  51     fi
  52
  53     while read DEV MTPT FSTYPE REST; do
  54         case $DEV in
  55         /dev/nbd*|/dev/nd[a-z]*|/dev/etherd/e*)
  56             echo ${NAME}':' "not deconfiguring network interfaces: network devices still mounted."
  57             exit 0
  58             ;;
  59         esac
  60         case $FSTYPE in
  61         nfs|nfs4|smbfs|ncp|ncpfs|cifs|coda|ocfs2|gfs|pvfs|pvfs2|fuse.httpfs|fuse.curlftpfs)
  62             echo ${NAME}':' "not deconfiguring network interfaces: network file systems still mounted."
  63             exit 0
  64             ;;
  65         esac
  66     done < /proc/mounts
  67 }
  68
  69 check_network_swap() {
  70     [ -e /proc/swaps ] || return 0
  71
  72     while read DEV MTPT FSTYPE REST; do
  73         case $DEV in
  74         /dev/nbd*|/dev/nd[a-z]*|/dev/etherd/e*)
  75             echo ${NAME}':' "not deconfiguring network interfaces: network swap still mounted."
  76             exit 0
  77             ;;
  78         esac
  79     done < /proc/swaps
  80 }
  81
  82 ifup_hotplug () {
  83     if [ -d /sys/class/net ]
  84     then
  85             ifaces=$(for iface in $(ifquery --list --allow=hotplug 2>/dev/null)
  86                             do
  87                                     link=${iface##:*}
  88                                     link=${link##.*}
  89                                     if [ -e "/sys/class/net/$link" ]
  90                                     then
  91                                         echo "$iface"
  92                                     fi
  93                             done)
  94             if [ -n "$ifaces" ]
  95             then
  96                 ifup $ifaces "$@" || true
  97             fi
  98     fi
  99 }
 100
 101 ifup_mgmt () {
 102         ifaces=$(ifquery --list --allow=mgmt 2>/dev/null)
 103         if [ -n "$ifaces" ]; then
 104                 echo "bringing up mgmt class interfaces"
 105                 ifup --allow=mgmt
 106         fi
 107 }
 108
 109 ifupdown_init() {
 110         # remove state file at boot
 111         [ ! -e ${IFSTATE_LOCKFILE} ] && rm -f ${IFSTATE_FILE}
 112
 113         [ ! -e /run/network ] && mkdir -p /run/network &>/dev/null
 114         [ ! -e /etc/network/run ] && \
 115                 ln -sf /run/network /etc/network/run &>/dev/null
 116 }
 117
 118 case "$1" in
 119 start)
 120         ifupdown_init
 121         if [ "$CONFIGURE_INTERFACES" = no ]
 122         then
 123             echo ${NAME}':' "Not configuring network interfaces, see /etc/default/networking"
 124             exit 0
 125         fi
 126         set -f
 127         exclusions=$(process_exclusions)
 128         perfoptions=$(perf_options)
 129         echo ${NAME}':' "Configuring network interfaces"
 130         ifup_mgmt
 131         ifup -a $EXTRA_ARGS $exclusions $perfoptions
 132         ifup_hotplug $HOTPLUG_ARGS $EXTRA_ARGS $exclusions
 133         ;;
 134 stop)
 135         if [ "$SKIP_DOWN_AT_SYSRESET" = "yes" ]; then
 136         SYSRESET=0
 137         systemctl list-jobs | egrep -q '(shutdown|reboot|halt|poweroff)\.target'
 138         [ $? -eq 0 ] && SYSRESET=1
 139         if [ $SYSRESET -eq 1 ]; then
 140             echo ${NAME}':' "Skipping deconfiguring network interfaces"
 141             exit 0
 142         fi
 143         fi
 144         ifupdown_init
 145         check_network_file_systems
 146         check_network_swap
 147         exclusions=$(process_exclusions)
 148
 149         echo ${NAME}':' "Deconfiguring network interfaces"
 150         ifdown -a $EXTRA_ARGS $exclusions
 151         ;;
 152
 153 reload)
 154
 155         ifupdown_init
 156         exclusions=$(process_exclusions)
 157
 158         echo ${NAME}':' "Reloading network interfaces configuration"
 159         ifreload -a $EXTRA_ARGS $exclusions
 160         ;;
 161
 162 *)
 163         echo ${NAME}':' "Usage: $0 {start|stop|reload}"
 164         exit 1
 165         ;;
 166 esac
 167
 168 exit 0