share/initrd/etc/rc

   1 #!/bin/sh
   2
   3 # echo "Starting shell from md boot"
   4 # exec sh
   5
   6 export HOME=/root
   7
   8 /sbin/mount_tmpfs tmpfs /tmp
   9 /sbin/mount_tmpfs tmpfs /var
  10 mkdir /var/tmp
  11 mkdir /var/run
  12 # / is mounted ro by default
  13 /sbin/mount_ufs -w /dev/md0s0 /
  14
  15 rescue_shell() {
  16         cat /etc/motd
  17         echo "Starting recovery shell!"
  18         exec sh
  19         exit 0
  20 }
  21
  22 # Start udevd
  23 /sbin/udevd
  24
  25 for rcs in /etc/rc.*; do
  26         if [ -x $rcs ]; then
  27                 . $rcs
  28         fi
  29 done
  30
  31 echo "Mounting new root"
  32
  33 IFS=':'
  34 REAL_ROOT=`sysctl -n vfs.real_root`
  35 if [ "$?" -ne "0" ]; then
  36         echo "Kernel does not have vfs.real_root sysctl. Please update your" \
  37                 "kernel if you intend to use initrd"
  38         rescue_shell
  39 fi
  40 if [ -z "${REAL_ROOT}" ]; then
  41         echo "vfs.real_root sysctl not set. Dropping to a rescue shell."
  42         rescue_shell
  43 fi
  44 set -- $REAL_ROOT
  45 TYPE=$1
  46 unset IFS
  47
  48 if [ "$TYPE" = "local" ]; then
  49         FSTYPE=$2
  50         MOUNTFROM=$3
  51
  52         # Make sure MOUNTFROM begins with /dev/
  53         substr="${MOUNTFROM##/dev/}"
  54         if [ "$substr" = "$MOUNTFROM" ]; then
  55                 MOUNTFROM="/dev/$MOUNTFROM"
  56         fi
  57
  58         echo "executing /sbin/mount -t $FSTYPE $4 $MOUNTFROM /new_root"
  59         /sbin/mount -o ro -t $FSTYPE $4 $MOUNTFROM /new_root
  60         if [ "$?" -ne "0" ]; then
  61                 rescue_shell
  62         fi
  63 else
  64         if [ -x "/etc/rcmount_${TYPE}" ]; then
  65                 . /etc/rcmount_${TYPE} $@
  66                 if [ "$?" -ne "0" ]; then
  67                         rescue_shell
  68                 fi
  69         else
  70                 rescue_shell
  71         fi
  72 fi
  73
  74 # Stop udevd
  75 read UDEVD_PID < /var/run/udevd.pid
  76 kill $UDEVD_PID
  77
  78 # Clean up
  79 rm -rf /var/*
  80 rm -rf /tmp/*
  81 /sbin/umount /var
  82 /sbin/umount /tmp
  83
  84 echo "Mounting devfs on new root"
  85 #/sbin/mount_devfs /new_root/dev
  86 /sbin/mount_null /dev /new_root/dev