share/initrd/rc

   1 #!/bin/sh
   2
   3 # echo "Starting shell from md boot"
   4 # exec sh
   5
   6 /sbin/mount_tmpfs tmpfs /tmp
   7 /sbin/mount_tmpfs tmpfs /var
   8 mkdir /var/tmp
   9 mkdir /var/run
  10
  11 rescue_shell() {
  12         echo "Starting recovery shell!"
  13         exec sh
  14         exit 0
  15 }
  16
  17 # Start udevd
  18 /sbin/udevd
  19
  20 for rcs in /etc/rc.*; do
  21         if [ -x $rcs ]; then
  22                 . $rcs
  23         fi
  24 done
  25
  26 echo "Mounting new root"
  27
  28 IFS=':'
  29 REAL_ROOT=`sysctl -n vfs.real_root`
  30 if [ "$?" -ne "0" ]; then
  31         echo "Kernel does not have vfs.real_root sysctl. Please update your" \
  32                 "kernel if you intend to use initrd"
  33         rescue_shell
  34 fi
  35 set -- $REAL_ROOT
  36 TYPE=$1
  37 unset IFS
  38
  39 if [ "$TYPE" = "local" ]; then
  40         FSTYPE=$2
  41         MOUNTFROM=$3
  42
  43         # Make sure MOUNTFROM begins with /dev/
  44         substr="${MOUNTFROM##/dev/}"
  45         if [ "$substr" = "$MOUNTFROM" ]; then
  46                 MOUNTFROM="/dev/$MOUNTFROM"
  47         fi
  48
  49         echo "executing /sbin/mount -t $FSTYPE $4 $MOUNTFROM /new_root"
  50         /sbin/mount -o ro -t $FSTYPE $4 $MOUNTFROM /new_root
  51         if [ "$?" -ne "0" ]; then
  52                 rescue_shell
  53         fi
  54 else
  55         if [ -x "/etc/rcmount_${TYPE}" ]; then
  56                 . /etc/rcmount_${TYPE} $@
  57                 if [ "$?" -ne "0" ]; then
  58                         rescue_shell
  59                 fi
  60         else
  61                 rescue_shell
  62         fi
  63 fi
  64
  65 # Stop udevd
  66 read UDEVD_PID < /var/run/udevd.pid
  67 kill $UDEVD_PID
  68
  69 # Clean up
  70 rm -rf /var/*
  71 rm -rf /tmp/*
  72 /sbin/umount /var
  73 /sbin/umount /tmp
  74
  75 echo "Mounting devfs on new root"
  76 #/sbin/mount_devfs /new_root/dev
  77 /sbin/mount_null /dev /new_root/dev