#!/bin/sh
# This script configures support for PCMCIA and/or Cardbus cards needed during
# installation, such as a CD-ROM drive or an ethernet card used for an NFS
# install.

echo
echo "PCMCIA/Cardbus support script, 2003-02-18 volkerdi@slackware.com"
echo

# To use a different floppy drive, set this variable first.
if [ "$FLOPPY" = "" ]; then
  FLOPPY="/dev/fd0"
fi
USEDFLOP=false

# Make a mount directory:
mkdir -p /pcmcia

# First, we need to mount the PCMCIA supplemental disk.
while [ 0 ]; do
  if [ -r /pcmcia/etc/pcmcia/config.opts ]; then
    umount /pcmcia
  fi

  unset UMOUNTCDROM

  echo -n "Searching for pcmcia.dsk in /cdrom/isolinux/... "
  if [ -r /cdrom/isolinux/pcmcia.dsk ]; then 
    mount -o loop -o ro /cdrom/isolinux/pcmcia.dsk /pcmcia
    echo "found."
    break
  else
    echo "not found."
  fi

  echo -n "Searching for pcmcia.dsk in /cdrom/rootdisks/... "
  if [ -r /cdrom/rootdisks/pcmcia.dsk ]; then
    mount -o loop -o ro /cdrom/rootdisks/pcmcia.dsk /pcmcia
    echo "found."
    break
  else
    echo "not found."
  fi

  echo "Attempting to mount CD-ROM..."

  # IDE device search:
  for device in \
    /dev/hdd /dev/hdc /dev/hdb /dev/hda /dev/hde /dev/hdf /dev/hdg /dev/hdh \
    ; do
    mount -o ro -t iso9660 $device /var/log/mount 1> /dev/null 2> /dev/null
    if [ $? = 0 ]; then
      UMOUNTCDROM=$device
      break
    fi
  done
  # SCSI device search:
  if [ "$UMOUNTCDROM" = "" ]; then
    for device in \
      /dev/sr0 /dev/sr1 /dev/sr2 /dev/sr3 \
      ; do
      mount -o ro -t iso9660 $device /var/log/mount 1> /dev/null 2> /dev/null
      if [ $? = 0 ]; then
        UMOUNTCDROM=$device
        break
      fi
    done
  fi
  # Long shot:
  if [ "$UMOUNTCDROM" = "" ]; then
    for device in \
      /dev/pcd0 /dev/pcd1 /dev/pcd2 /dev/pcd3 \
      ; do
      mount -o ro -t iso9660 $device /var/log/mount 1> /dev/null 2> /dev/null
      if [ $? = 0 ]; then
        UMOUNTCDROM=$device
        break
      fi
    done
  fi

  echo -n "Searching for pcmcia.dsk in /cdrom/isolinux/... "
  if [ -r /cdrom/isolinux/pcmcia.dsk ]; then
    mount -o loop -o ro /cdrom/isolinux/pcmcia.dsk /pcmcia
    echo "found."
    break
  else
    echo "not found."
  fi

  echo -n "Searching for pcmcia.dsk in /cdrom/rootdisks/... "
  if [ -r /cdrom/rootdisks/pcmcia.dsk ]; then
    mount -o loop -o ro /cdrom/rootdisks/pcmcia.dsk /pcmcia
    echo "found."
    break
  else
    echo "not found."
  fi

  echo
  echo "Loading pcmcia.dsk from floppy disk."
  echo
  echo "Please insert the PCMCIA supplemental diskette (pcmcia.dsk), "
  echo -n "and hit [enter] to continue."
  read inputjunk;
  echo
  mount -t vfat $FLOPPY /pcmcia
  if [ ! -r /pcmcia/etc/pcmcia/config.opts ]; then
    echo "ERROR:  /pcmcia/etc/pcmcia/config.opts not found."
    echo
    echo "This does not appear to be the correct disk.  Please make sure"
    echo "the PCMCIA supplemental diskette (pcmcia.dsk) is in the floppy"
    echo "drive, and hit enter to continue, or control-c to abort."
    echo
    if mount | fgrep pcmcia 1> /dev/null 2> /dev/null ; then
      umount /pcmcia
    fi
  else
    # Looks correct, but lets check the kernel version:
    if [ ! -d /pcmcia/lib/modules/`uname -r`/pcmcia ]; then
      echo "WARNING:"
      echo "Can't find directory /pcmcia/lib/modules/`uname -r`/pcmcia on"
      echo "disk.  This disk may be designed for use with a different Linux"
      echo "kernel version than the one on your bootdisk.  This is the"
      echo "PCMCIA module directory we found:"
      echo "  `echo /pcmcia/lib/modules/*/pcmcia`"
      echo "You might as well look for the bareapm.i bootdisk of the correct"
      echo "kernel version, or an updated pcmcia.dsk image.  This disk is not"
      echo "likely to work with your kernel.  Press control-c to abort."
      umount /pcmcia
      read inputjunk;
    fi
    # If we made it here, then all should be well.
    USEDFLOP=true
    break
  fi
done

# now, set up the support:
( cd /lib
  if [ -d modules ]; then
    mv modules modules.olddir
  elif [ -L modules ]; then
    rm -f modules
  fi
  ln -sf /pcmcia/lib/modules .
)
( cd /sbin
  for file in /pcmcia/sbin/* ; do
    if [ -L `basename $file` ]; then
      rm `basename $file`
    fi
    if [ ! -r `basename $file` ]; then
      ln -sf $file .
    fi
  done
)
( cd /etc
  rm -f pcmcia
  ln -sf /pcmcia/etc/pcmcia .
)

# OK, here goes nothing:
/pcmcia/scripts/rc.pcmcia start

# Now, the last step.  To be able to umount the floppy, we have to kill cardmgr
# first.  Luckily, once all the PCMCIA modules have been loaded by cardmgr, it
# doesn't need to be there for things to continue working. :)

echo
echo
echo "The PCMCIA/Cardbus subsystem is now installed.  Please make sure that"
echo "all of the cards you'll need for the installation are in the machine."
echo "If you still need to insert any PCMCIA/Cardbus cards, do that now.  Once"
echo "the drive stops (indicating that all needed modules have been"
echo -n "loaded), then press [enter] to continue."
read inputjunk
echo

# OK, this is a little tricky.
echo "Cleaning up..."
sleep 10 
# Get rid of rmmod.  It causes trouble. :)
if [ -L /sbin/rmmod ]; then
  mv /sbin/rmmod /sbin/rmmod.disabled
fi
# Kill cardmgr with a hard kill so it doesn't even try to unload anything
/bin/killall -9 cardmgr
# Now, try to make sure that /pcmcia gets unmounted...
for try in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ; do
  umount /pcmcia
  if mount | grep "on /pcmcia " 1> /dev/null 2> /dev/null ; then
    BAD=verybad
  else
    # good!
    break
  fi
  sleep 5
done
rmdir /pcmcia

if [ ! "$UMOUNTCDROM" = "" ]; then
  echo "Unmounting CD-ROM..."
  umount /var/log/mount
fi

if [ -L /sbin/rmmod.disabled ]; then
  mv /sbin/rmmod.disabled /sbin/rmmod
fi

# Restore old modules:
if [ -L /lib/modules ]; then
  rm -f /lib/modules
fi
if [ -d /lib/modules.olddir ]; then
  mv /lib/modules.olddir /lib/modules
fi

if [ "$USEDFLOP" = "true" ]; then
  echo
  echo "You may now remove the PCMCIA supplemental disk."
fi
echo
echo "The next step in your installation may be partitioning your hard drive"
echo "(if you're installing to a Linux partition) with 'fdisk' or 'cfdisk'"
echo "(the menu-driven version of fdisk).  If you already have a partition"
echo "prepared for Linux, run 'setup' to start the installer program."
echo