overlay-squashfs-x86/etc/init.d/netconfig2

   1 #!/sbin/runscript
   2
   3 debugnetcfg2='/var/log/netconfig2.log'
   4
   5 depend()
   6 {
   7         before xdm autorun
   8         after sysresccd
   9 }
  10
  11 log_netconfig2()
  12 {
  13         echo "netconfig2 @ $(date +%Y%m%d-%H:%M:%S): ${1}" >> ${debugnetcfg2}
  14 }
  15
  16 print_and_log_netconfig2()
  17 {
  18         echo "netconfig2 @ $(date +%Y%m%d-%H:%M:%S): ${1}" >> ${debugnetcfg2}
  19         echo "netconfig2: ${1}"
  20 }
  21
  22 start()
  23 {
  24         ebegin "Performing the network configuration..."
  25
  26         CMDLINE="$(cat /proc/cmdline)"
  27
  28         # ---- run DHCP if asked on cmdline (dodhcp) ----
  29         # we must run dhcp from bashlogin even if it has already been done in linuxrc since it updates
  30         # system files such as resolv.conf
  31         if echo "${CMDLINE}" | grep -q -F 'dodhcp'
  32         then
  33                 DHCPHOSTNAME="$(hostname)"
  34                 for opt in ${CMDLINE}
  35                 do
  36                         if echo "${opt}" | grep -q -F 'dhcphostname'
  37                         then
  38                                 DHCPHOSTNAME=$(echo "${opt}" | cut -d= -f2)
  39                                 print_and_log_netconfig2 "DHCPHOSTNAME=${DHCPHOSTNAME}"
  40                         fi
  41                 done
  42
  43                 NETDEVICES="$(awk -F: '/eth.:|tr.:|ath.:|wlan.:/{print $1}' /proc/net/dev 2>/dev/null)"
  44                 dhcpstate=''
  45                 attempts=1
  46                 maxattempts=25
  47                 while [ "${dhcpstate}" != 'ok' ] && [ "${attempts}" -lt "${maxattempts}" ] # retry until we get a dhcp address on at least one interface
  48                 do
  49                         for curdev in ${NETDEVICES}
  50                         do
  51                                 # Try to find whether or not the link is connected
  52                                 mac=$(ifconfig ${curdev} | grep HWaddr | awk '{print $5}')
  53                                 if [ -n "$(which mii-tool)" ] && mii-tool ${curdev} 2>/dev/null | grep -qF 'link ok'
  54                                 then
  55                                         linkstate='link-ok'
  56                                 elif [ -n "$(which mii-tool)" ] && mii-tool ${curdev} 2>/dev/null | grep -qF 'no link'
  57                                 then
  58                                         linkstate='no-link'
  59                                 else # if not sure, set linkstate='unknown'
  60                                         linkstate='unknown'
  61                                 fi
  62                                 print_and_log_netconfig2  "--- ${curdev}: link=${linkstate}, mac=${mac}"
  63
  64                                 # If the link is up, then try (even if another interface already had a dhcp address)
  65                                 if [ "${linkstate}" != 'no-link' ]
  66                                 then
  67                                         print_and_log_netconfig2  "Attempt ${attempts} of ${maxattempts} to get a DHCP address on ${curdev}..."
  68                                         cmd="dhcpcd -L -n -t 10 -I '' -h ${DHCPHOSTNAME} ${curdev}"
  69                                         ${cmd} ; res="$?"
  70                                         print_and_log_netconfig2  "${cmd} --> ${res}"
  71                                         [ "${res}" = '0' ] && dhcpstate='ok'
  72                                 fi
  73                         done
  74
  75                         if [ "${dhcpstate}" != 'ok' ]
  76                         then
  77                                 print_and_log_netconfig2 "Cannot get a DHCP address. Check the cables on the ethernet interfaces."
  78                         fi
  79
  80                         attempts=$((attempts+1))
  81                 done
  82         fi
  83
  84         # ---- configure the dns nameserver if requested ----
  85         for curopt in ${CMDLINE}
  86         do
  87                 if echo "${curopt}" | grep -q -E '^dns=[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$'
  88                 then
  89                         setdns="$(echo ${curopt} | sed -r -e 's!^dns=([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})$!\1!g')"
  90                         rm -f /etc/resolv.conf 2>/dev/null
  91                         echo "nameserver ${setdns}" > /etc/resolv.conf
  92                         print_and_log_netconfig2 "set nameserver to ${setdns}"
  93                 fi
  94         done
  95 }
  96