org.handhelds.familiar/packages/arpwatch/files/init.d

   1 #!/bin/sh
   2 # /etc/init.d/arpwatch: v9 2004/08/14 KELEMEN Peter <fuji@debian.org>
   3 # Based on /etc/init.d/skeleton (1.8  03-Mar-1998  miquels@cistron.nl)
   4 # 2001/10/26    fuji@debian.org         Support multiple instances.
   5 # 2001/11/24    fuji@debian.org         Use POSIX-style functions.
   6 # 2001/12/17    fuji@debian.org         Use --pidfile on startup, fix restart.
   7 # 2004/08/10    fuji@debian.org         Source /etc/default/arwpatch .
   8 #                                       Create datafile if it doesn't exist.
   9 #                                       Run daemon only if executable.
  10
  11 PATH=/sbin:/bin:/usr/sbin:/usr/bin
  12 NAME=arpwatch
  13 DAEMON=/usr/sbin/$NAME
  14 DESC="Ethernet/FDDI station monitor daemon"
  15 DATADIR=/var/lib/$NAME
  16
  17 test -x $DAEMON || exit 0
  18
  19 ### You shouldn't touch anything below unless you know what you are doing.
  20
  21 [ -f /etc/default/arpwatch ] && . /etc/default/arpwatch
  22
  23 # Decide whether we have to deal with multiple interfaces.
  24 CONF=/etc/arpwatch.conf
  25 MULTIPLE=0
  26 if [ -r $CONF ]; then
  27         grep -c '^[a-z]' $CONF 2>&1 >/dev/null && MULTIPLE=1
  28 fi
  29
  30 # Check whether we have to drop privileges.
  31 if [ -n "$RUNAS" ]; then
  32         if getent passwd "$RUNAS" >/dev/null; then
  33                 ARGS="-u ${RUNAS} $ARGS"
  34         else
  35                 RUNAS=""
  36         fi
  37 fi
  38
  39 start_instance () {
  40         IFACE=$1
  41         INSTANCE=${NAME}-${IFACE}
  42         IFACE_OPTS="-i ${IFACE} -f ${IFACE}.dat $2"
  43         DATAFILE=$DATADIR/${IFACE}.dat
  44
  45         echo -n "Starting $DESC: "
  46         if [ ! -f $DATAFILE ]; then
  47                 echo -n "(creating $DATAFILE) "
  48                 :> $DATAFILE
  49         fi
  50         if [ -n "$RUNAS" ]; then
  51                 echo -n "(chown $RUNAS $DATAFILE) "
  52                 chown $RUNAS $DATAFILE
  53         fi
  54         start-stop-daemon --start --quiet \
  55                 --pidfile /var/run/${INSTANCE}.pid \
  56                 --exec $DAEMON -- $IFACE_OPTS $ARGS
  57         echo "${INSTANCE}."
  58         ps h -C $NAME -o pid,args | \
  59                 awk "/$IFACE/ { print \$1 }" > /var/run/${INSTANCE}.pid
  60 }
  61
  62 stop_instance () {
  63         IFACE=$1
  64         INSTANCE=${NAME}-${IFACE}
  65         [ -f /var/run/${INSTANCE}.pid ] || return 0
  66         echo -n "Stopping $DESC: "
  67         start-stop-daemon --stop --quiet --oknodo \
  68                 --pidfile /var/run/${INSTANCE}.pid
  69         echo "${INSTANCE}."
  70         rm -f /var/run/${INSTANCE}.pid
  71 }
  72
  73 process_loop_break_line () {
  74         __IFACE=$1
  75         shift
  76         __IOPTS="$@"
  77 }
  78
  79 process_loop () {
  80         OPERATION=$1
  81         grep '^[a-z]' $CONF 2>/dev/null | \
  82         while read LINE
  83         do
  84                 process_loop_break_line $LINE
  85                 I=$__IFACE
  86                 I_OPTS="$__IOPTS"
  87                 $OPERATION $I "$I_OPTS"
  88         done
  89 }
  90
  91 start_default () {
  92         echo -n "Starting $DESC: "
  93         if [ ! -f $DATADIR/arp.dat ]; then
  94                 echo -n "(creating $DATADIR/arp.dat) "
  95                 :> $DATADIR/arp.dat
  96         fi
  97         if [ -n "$RUNAS" ]; then
  98                 echo -n "(chown $RUNAS $DATADIR/arp.dat) "
  99                 chown $RUNAS $DATADIR/arp.dat
 100         fi
 101         start-stop-daemon --start --quiet \
 102                 --exec $DAEMON -- $ARGS
 103         echo "$NAME."
 104 }
 105
 106 stop_default () {
 107         echo -n "Stopping $DESC: "
 108         start-stop-daemon --stop --quiet --oknodo \
 109                 --exec $DAEMON
 110         echo "$NAME."
 111         rm -f /var/run/$NAME.pid
 112 }
 113
 114 startup () {
 115         if [ "$MULTIPLE" -gt 0 ]; then
 116                 process_loop start_instance
 117         else
 118                 start_default
 119         fi
 120 }
 121
 122 shutdown () {
 123         if [ "$MULTIPLE" -gt 0 ]; then
 124                 process_loop stop_instance
 125         else
 126                 stop_default
 127         fi
 128 }
 129
 130 case "$1" in
 131   start)
 132         startup
 133         ;;
 134   stop)
 135         shutdown
 136         ;;
 137   reload)
 138         echo "Reload operation not supported -- use restart."
 139         exit 1
 140         ;;
 141   restart|force-reload)
 142         #
 143         #       If the "reload" option is implemented, move the "force-reload"
 144         #       option to the "reload" entry above. If not, "force-reload" is
 145         #       just the same as "restart".
 146         #
 147         shutdown
 148         sleep 1
 149         startup
 150         ;;
 151   *)
 152         N=/etc/init.d/$NAME
 153         # echo "Usage: $N {start|stop|restart|reload|force-reload}" >&2
 154         echo "Usage: $N {start|stop|restart|force-reload}" >&2
 155         exit 1
 156         ;;
 157 esac
 158
 159 exit 0