openwrt/package/base-files/default/etc/preinit

   1 #!/bin/sh
   2 . /etc/functions.sh
   3 export PATH=/bin:/sbin:/usr/bin:/usr/sbin
   4
   5 mount none /proc -t proc
   6 size=$(awk '/Mem:/ {l=5242880;print((s=$2/2)<l)?$2-l:s}' /proc/meminfo)
   7 mount none /tmp -t tmpfs -o size=$size
   8
   9 insmod diag
  10 echo /sbin/hotplug.failsafe > /proc/sys/kernel/hotplug
  11 set_state preinit
  12
  13 ifname=eth0
  14 # WAP54G, WL-HDD
  15 [  "$(nvram get boardnum)" = "2" \
  16 -o \( "$(nvram get boardnum)" = "asusX" \
  17    -a "$(($(nvram get et1phyaddr)))" -eq 1 \) ] && ifname="eth1"
  18
  19 insmod switch-core
  20 insmod switch-robo || insmod switch-adm || rmmod switch-core
  21
  22 ifconfig $ifname 192.168.1.1 netmask 255.255.255.0 broadcast 192.168.1.255 up
  23
  24 # save the boot loader's vlan config
  25 # we need it on some routers that have no vlan*ports set
  26 [ -d /proc/switch/eth0 ] && {
  27         export v0p="$(cat /proc/switch/eth0/vlan/0/ports)"
  28         export v1p="$(cat /proc/switch/eth0/vlan/1/ports)"
  29         export v2p="$(cat /proc/switch/eth0/vlan/2/ports)"
  30         echo 1 > /proc/switch/eth0/reset
  31
  32         # this would be easier if we blasted the message across all ports
  33         # but we don't want packets leaking across interfaces
  34
  35         for port in $(seq 0 4); do {
  36                 echo "$port 5u*" > /proc/switch/eth0/vlan/0/ports
  37                 netmsg 192.168.1.255 "Press reset now, to enter Failsafe!"
  38         }; done
  39
  40 } || netmsg 192.168.1.255 "Press reset now, to enter Failsafe!"
  41
  42 sleep 2
  43
  44 lock -w /tmp/.failsafe
  45 echo /sbin/hotplug > /proc/sys/kernel/hotplug
  46
  47 ifconfig $ifname 0.0.0.0 down
  48
  49 # revert to the boot loader's vlan config
  50 # required for at least WRT54G v1.1
  51 [ -d /proc/switch/eth0 ] && {
  52         echo "$v0p" > /proc/switch/eth0/vlan/0/ports
  53         echo "$v1p" > /proc/switch/eth0/vlan/1/ports
  54         echo "$v2p" > /proc/switch/eth0/vlan/2/ports
  55         unset v0p v1p v2p
  56 }
  57
  58 mount_root
  59
  60 exec /sbin/init