target/linux/brcm-2.4/base-files/etc/preinit

   1 #!/bin/sh
   2 # Copyright (C) 2006 OpenWrt.org
   3
   4 . /etc/functions.sh
   5 . /etc/diag.sh
   6
   7 failsafe() {
   8         lock /tmp/.failsafe
   9
  10         echo "0 1 2 3 4 5u*" > /proc/switch/eth0/vlan/0/ports
  11
  12         set_state failsafe
  13         [ -x "/usr/sbin/nvram" ] && {
  14                 [ "$(nvram get boot_wait)" != "on" ] && {
  15                         nvram set boot_wait=on
  16                         nvram commit
  17                 }
  18         }
  19
  20         netmsg 192.168.1.255 "Entering Failsafe!"
  21         telnetd -l /bin/login <> /dev/null 2>&1
  22
  23         ash --login
  24 }
  25
  26 export PATH=/bin:/sbin:/usr/bin:/usr/sbin
  27 mount none /proc -t proc
  28 size=$(awk '/Mem:/ {l=5242880;print((s=$2/2)<l)?$2-l:s}' /proc/meminfo)
  29 mount none /tmp -t tmpfs -o size=$size
  30
  31 insmod diag
  32 set_state preinit
  33 trap 'FAILSAFE=true' USR1
  34 echo '/sbin/hotplug.failsafe' > /proc/sys/kernel/hotplug
  35
  36 ifname=eth0
  37
  38 # hardware specific overrides
  39 case "$(cat /proc/diag/model)" in
  40         "Linksys WAP54G V1") ifname=eth1;;
  41         "ASUS WL-HDD") ifname=eth1;;
  42         "ASUS WL-300g") ifname=eth1;;
  43         "ASUS (unknown, BCM4702)") ifname=eth1;;
  44 esac
  45
  46 insmod switch-core
  47 insmod switch-robo || insmod switch-adm || rmmod switch-core
  48
  49 ifconfig $ifname 192.168.1.1 netmask 255.255.255.0 broadcast 192.168.1.255 up
  50
  51 [ -d /proc/switch/eth0 ] && {
  52         echo 1 > /proc/switch/eth0/reset
  53
  54         # this would be easier if we blasted the message across all ports
  55         # but we don't want packets leaking across interfaces
  56         for port in $(seq 0 4); do {
  57                 echo "$port 5u*" > /proc/switch/eth0/vlan/0/ports
  58                 netmsg 192.168.1.255 "Press reset now, to enter Failsafe!"
  59         }; done
  60 } || netmsg 192.168.1.255 "Press reset now, to enter Failsafe!"
  61
  62 sleep 2
  63
  64 eval ${FAILSAFE:+failsafe}
  65
  66 lock -w /tmp/.failsafe
  67 set_state preinit
  68 echo /sbin/hotplug > /proc/sys/kernel/hotplug
  69
  70 ifconfig $ifname 0.0.0.0 down
  71
  72 mount_root
  73 exec /sbin/init