openwrt/package/quagga/files/quagga.init

   1 #!/bin/sh
   2 #
   3 # quagga        Starts/stops quagga daemons and watchquagga.
   4 #               Create a daemon.conf file to have that routing daemon
   5 #               started/stopped automagically when using this script
   6 #               without any daemon names as args.
   7 #               If watchquagga is available, it will also be
   8 #               started/stopped if the script is called without
   9 #               any daemon names.
  10 #
  11
  12 ME=$(basename $0)
  13
  14 usage() {
  15         echo "Usage: ${ME} {start|stop|restart} [daemon ...]"
  16         exit 2
  17 }
  18
  19 if [ -z "$1" ]
  20 then
  21         usage
  22 else
  23         COMMAND=$1
  24 fi
  25 shift
  26 ARG_DAEMONS=$*
  27 BINDIR=/usr/sbin
  28 CONFDIR=/etc/quagga
  29 STATEDIR=/var/run/quagga
  30 DAEMONS="zebra ripd ripngd ospfd ospf6d bgpd"
  31 DAEMON_FLAGS=-d
  32 WATCHQUAGGA_FLAGS="-d -z -T 60 -R"
  33 WATCHQUAGGA_CMD="$0 watchrestart"
  34 if [ ${COMMAND} != "watchrestart" ]
  35 then
  36         DAEMONS="${DAEMONS} watchquagga"
  37 fi
  38 DAEMONS_STARTSEQ=${DAEMONS}
  39
  40 reverse()
  41 {
  42         local revlist r
  43         revlist=
  44         for r
  45         do
  46                 revlist="$r $revlist"
  47         done
  48         echo $revlist
  49 }
  50
  51 DAEMONS_STOPSEQ=$(reverse ${DAEMONS_STARTSEQ})
  52
  53 #pidof() {
  54 #       ps ax | awk 'match($5, "(^|/)'"$1"'$") > 0 { printf " %s", $1 }'
  55 #}
  56
  57 quit() {
  58         echo "${ME}: $1"
  59         exit 0
  60 }
  61
  62 die() {
  63         echo "${ME}: $1"
  64         exit 1
  65 }
  66
  67 is_in() {
  68         local i
  69         for i in $2
  70         do
  71                 [ "$1" = "$i" ] && return 0
  72         done
  73         return 1
  74 }
  75
  76 select_subset() {
  77         local unknown i j
  78         unknown=
  79         RESULT=
  80         for i in $1
  81         do
  82                 is_in $i "$2" || unknown="$unknown $i"
  83         done
  84         if [ -n "$unknown" ]
  85         then
  86                 RESULT=$unknown
  87                 return 1
  88         else
  89                 for j in $2
  90                 do
  91                         is_in $j "$1" && RESULT="$RESULT $j"
  92                 done
  93                 return 0
  94         fi
  95 }
  96
  97 # check command
  98
  99 case ${COMMAND}
 100 in
 101         start|stop|restart)
 102                 ;;
 103         watchrestart)
 104                 if [ -n "$ARG_DAEMONS" ]
 105                 then
 106                         echo "${ME}: watchrestart mode is only for use by watchquagga"
 107                         exit 2
 108                 fi
 109                 ;;
 110         *)
 111                 usage
 112                 ;;
 113 esac
 114
 115 # select daemons to start
 116
 117 case ${COMMAND}
 118 in
 119         start|restart|watchrestart)
 120                 START_DAEMONS=
 121                 for d in ${DAEMONS_STARTSEQ}
 122                 do
 123                         [ -x "${BINDIR}/${d}" -a -f "${CONFDIR}/${d}.conf" ] \
 124                         && START_DAEMONS="${START_DAEMONS}${d} "
 125                 done
 126                 WATCHQUAGGA_DAEMONS=${START_DAEMONS}
 127                 if is_in watchquagga "${DAEMONS_STARTSEQ}"
 128                 then
 129                         START_DAEMONS="${START_DAEMONS} watchquagga"
 130                 fi
 131                 if [ -n "${ARG_DAEMONS}" ]
 132                 then
 133                         if select_subset "${ARG_DAEMONS}" "${DAEMONS}"
 134                         then
 135                                 if select_subset "${ARG_DAEMONS}" "${START_DAEMONS}"
 136                                 then
 137                                         START_DAEMONS=${RESULT}
 138                                 else
 139                                         die "these daemons are not startable:${RESULT}."
 140                                 fi
 141                         else
 142                                 die "unknown daemons:${RESULT}; choose from: ${DAEMONS}."
 143                         fi
 144                 fi
 145                 ;;
 146 esac
 147
 148 # select daemons to stop
 149
 150 case ${COMMAND}
 151 in
 152         stop|restart|watchrestart)
 153                 STOP_DAEMONS=${DAEMONS_STOPSEQ}
 154                 if [ -n "${ARG_DAEMONS}" ]
 155                 then
 156                         if select_subset "${ARG_DAEMONS}" "${STOP_DAEMONS}"
 157                         then
 158                                 STOP_DAEMONS=${RESULT}
 159                         else
 160                                 die "unknown daemons:${RESULT}; choose from: ${DAEMONS}."
 161                         fi
 162                 fi
 163                 stop_daemons=
 164                 for d in ${STOP_DAEMONS}
 165                 do
 166                         pidfile=${STATEDIR}/${d}.pid
 167                         if [ -f "${pidfile}" -o -n "$(pidof ${d})" ]
 168                         then
 169                                 stop_daemons="${stop_daemons}${d} "
 170                         elif [ -n "${ARG_DAEMONS}" ]
 171                         then
 172                                 echo "${ME}: found no ${d} process running."
 173                         fi
 174                 done
 175                 STOP_DAEMONS=${stop_daemons}
 176                 ;;
 177 esac
 178
 179 # stop daemons
 180
 181 for d in $STOP_DAEMONS
 182 do
 183         echo -n "${ME}: Stopping ${d} ... "
 184         pidfile=${STATEDIR}/${d}.pid
 185         if [ -f "${pidfile}" ]
 186         then
 187                 file_pid=$(cat ${pidfile})
 188                 if [ -z "${file_pid}" ]
 189                 then
 190                         echo -n "no pid file entry found ... "
 191                 fi
 192         else
 193                 file_pid=
 194                 echo -n "no pid file found ... "
 195         fi
 196         proc_pid=$(pidof ${d})
 197         if [ -z "${proc_pid}" ]
 198         then
 199                 echo -n "found no ${d} process running ... "
 200         else
 201                 count=0
 202                 notinpidfile=
 203                 for p in ${proc_pid}
 204                 do
 205                         count=$((${count}+1))
 206                         if kill ${p}
 207                         then
 208                                 echo -n "killed ${p} ... "
 209                         else
 210                                 echo -n "failed to kill ${p} ... "
 211                         fi
 212                         [ "${p}" = "${file_pid}" ] \
 213                         || notinpidfile="${notinpidfile} ${p}"
 214                 done
 215                 [ ${count} -le 1 ] \
 216                 || echo -n "WARNING: ${count} ${d} processes were found running ... "
 217                 for n in ${notinpidfile}
 218                 do
 219                         echo -n "WARNING: process ${n} was not in pid file ... "
 220                 done
 221         fi
 222         count=0
 223         survivors=$(pidof ${d})
 224         while [ -n "${survivors}" ]
 225         do
 226                 sleep 1
 227                 count=$((${count}+1))
 228                 survivors=$(pidof ${d})
 229                 [ -z "${survivors}" -o ${count} -gt 5 ] && break
 230                 for p in ${survivors}
 231                 do
 232                         sleep 1
 233                         echo -n "${p} "
 234                         kill ${p}
 235                 done
 236         done
 237         survivors=$(pidof ${d})
 238         [ -n "${survivors}" ] && \
 239         if kill -KILL ${survivors}
 240         then
 241                 echo -n "KILLed ${survivors} ... "
 242         else
 243                 echo -n "failed to KILL ${survivors} ... "
 244         fi
 245         sleep 1
 246         survivors=$(pidof ${d})
 247         if [ -z "${survivors}" ]
 248         then
 249                 echo -n "done."
 250                 if [ -f "${pidfile}" ]
 251                 then
 252                         rm -f ${pidfile} \
 253                         || echo -n " Failed to remove pidfile."
 254                 fi
 255         else
 256                 echo -n "failed to stop ${survivors} - giving up."
 257                 if [ "${survivors}" != "${file_pid}" ]
 258                 then
 259                         if echo "${survivors}" > ${pidfile}
 260                         then
 261                                 chown quagga:quagga ${pidfile}
 262                                 echo -n " Wrote ${survivors} to pidfile."
 263                         else
 264                                 echo -n " Failed to write ${survivors} to pidfile."
 265                         fi
 266                 fi
 267         fi
 268         echo
 269 done
 270
 271 # start daemons
 272
 273 if [ -n "$START_DAEMONS" ]
 274 then
 275         [ -d ${CONFDIR} ] \
 276         || quit "${ME}: no config directory ${CONFDIR} - exiting."
 277         chown -R quagga:quagga ${CONFDIR}
 278         [ -d ${STATEDIR} ] || mkdir -p ${STATEDIR} \
 279         || die "${ME}: could not create state directory ${STATEDIR} - exiting."
 280         chown -R quagga:quagga ${STATEDIR}
 281
 282         for d in $START_DAEMONS
 283         do
 284                 echo -n "${ME}: Starting ${d} ... "
 285                 proc_pid=$(pidof ${d})
 286                 pidfile=${STATEDIR}/${d}.pid
 287                 file_pid=
 288                 if [ -f "${pidfile}" ]
 289                 then
 290                         file_pid=$(cat ${pidfile})
 291                         if [ -n "${file_pid}" ]
 292                         then
 293                                 echo -n "found old pid file entry ${file_pid} ... "
 294                         fi
 295                 fi
 296                 if [ -n "${proc_pid}" ]
 297                 then
 298                         echo -n "found ${d} running (${proc_pid}) - skipping ${d}."
 299                         if [ "${proc_pid}" != "${file_pid}" ]
 300                         then
 301                                 if echo "${proc_pid}" > ${pidfile}
 302                                 then
 303                                         chown quagga:quagga ${pidfile}
 304                                         echo -n " Wrote ${proc_pid} to pidfile."
 305                                 else
 306                                         echo -n " Failed to write ${proc_pid} to pidfile."
 307                                 fi
 308                         fi
 309                 elif rm -f "${pidfile}"
 310                 then
 311                         if [ "${d}" = "watchquagga" ]
 312                         then
 313                                 $("${BINDIR}/${d}" \
 314                                         ${WATCHQUAGGA_FLAGS} \
 315                                         "${WATCHQUAGGA_CMD}" \
 316                                         ${WATCHQUAGGA_DAEMONS})
 317                                 status=$?
 318                         else
 319                                 $("${BINDIR}/${d}" ${DAEMON_FLAGS})
 320                                 status=$?
 321                         fi
 322                         if [ $status -eq 0 ]
 323                         then
 324                                 echo -n "done."
 325                         else
 326                                 echo -n "failed."
 327                         fi
 328                 else
 329                         echo -n " failed to remove pidfile."
 330                 fi
 331                 echo
 332         done
 333 fi