target/linux/s3c24xx/base-files/etc/preinit

   1 #!/bin/sh
   2 # Copyright (C) 2006 OpenWrt.org
   3 export PATH=/bin:/sbin:/usr/bin:/usr/sbin
   4 . /etc/diag.sh
   5 rm -rf /dev/console
   6 mknod /dev/console c 204 64
   7 exec </dev/console > /dev/console 2>&0
   8
   9 failsafe_ip() {
  10         ifconfig $ifname 192.168.1.1 netmask 255.255.255.0 broadcast 192.168.1.255 up
  11 }
  12
  13 failsafe() {
  14         [ -n "$ifname" ] && grep "$ifname" /proc/net/dev >/dev/null && {
  15                 failsafe_ip
  16                 netmsg 192.168.1.255 "Entering Failsafe!"
  17                 telnetd -l /bin/login <> /dev/null 2>&1
  18         }
  19         lock /tmp/.failsafe
  20         ash --login
  21 }
  22
  23 mount none /proc -t proc
  24 mount none /sys  -t sysfs
  25
  26 size=$(awk '/MemTotal:/ {l=5242880;mt=($2*1024);print((s=mt/2)<l)?mt-l:s}' /proc/meminfo)
  27 mount none /tmp -t tmpfs -o size=$size,nosuid,nodev,mode=1777
  28
  29 if grep devfs /proc/filesystems > /dev/null; then
  30         mount none /dev -t devfs
  31         M0=/dev/pty/m0
  32         M1=/dev/pty/m1
  33         HOTPLUG=/sbin/hotplug-call
  34 else
  35         mount -t tmpfs tmpfs /dev -o size=512K
  36 #       mknod /dev/console c 5 1
  37         mkdir /dev/shm
  38         /sbin/hotplug2 --coldplug --set-rules-file /etc/hotplug2-init.rules
  39         /sbin/hotplug2 --no-coldplug --persistent --set-rules-file /etc/hotplug2-init.rules &
  40         M0=/dev/ptmx
  41         M1=/dev/ptmx
  42         HOTPLUG=
  43 fi
  44
  45 mkdir -p /dev/pts /dev/shm
  46 mount none /dev/pts -t devpts
  47
  48 # the shell really doesn't like having stdin/out closed
  49 # that's why we use /dev/pty/m0 and m1 as replacement
  50 # for /dev/console if there's no serial console available
  51 dd if=/dev/console of=/dev/null bs=1 count=0 >/dev/null 2>/dev/null && {
  52         M0=/dev/console
  53         M1=/dev/console
  54 }
  55
  56 exec <$M0 >$M1 2>&0
  57
  58 echo "- preinit -"
  59 trap 'FAILSAFE=true' USR1
  60 [ -e /etc/preinit.arch ] && . /etc/preinit.arch
  61 set_state preinit
  62 echo "$HOTPLUG" > /proc/sys/kernel/hotplug
  63 eval ${FAILSAFE:+failsafe}
  64 lock -w /tmp/.failsafe
  65 #mount_root
  66 [ -f /sysupgrade.tgz ] && {
  67         echo "- config restore -"
  68         cd /
  69         mv sysupgrade.tgz /tmp
  70         tar xzf /tmp/sysupgrade.tgz
  71         rm -f /tmp/sysupgrade.tgz
  72         sync
  73 }
  74
  75 echo "- init -"
  76
  77 killall hotplug2
  78 exec /sbin/init