#!/bin/bash
# swsusp - invokes software suspend

#
# Configuration
#

# mounts, interfaces, and modules are all strings with single quotes.
# If there is more than one item in the list, then seperate it by spaces.
# see UMOUNTS below for the best example.

# These mount points should be umounted before suspend
UMOUNTS='/mnt/floppy /mnt/cdrom /mnt/ntfs'

# These interfaces should be stopped before suspend
DOWNIFS='eth0 eth1'

# These modules should be removed before suspend
REMOVEMODS='serial'

# These mount points should be mounted after suspend
# (provided that they were umounted)
REMOUNTS='/mnt/ntfs'

# These interfaces should be started after suspend
# (provided that they were stopped)
UPIFS='eth0 eth1'

# These modules should be loaded after suspend
# (provided that they were removed)
INSERTMODS='serial'

#
# Generally, there's no need to modify below this comment
#
T_MNTS=
T_IFS=
T_MODS=
T_GPM="no"
T_PCMCIA="no"

echo Preparing to suspend...

# Shared mounnts
for MNT in `echo $UMOUNTS`
do
 if [ `/bin/mount | grep -c " $MNT "` = 1 ]; then
  echo Unmounting $MNT
  umount $MNT
  if [ `echo $REMOUNTS | grep -c $MNT` = 1 ]; then
   T_MNTS="$T_MNTS $MNT"
  fi
 fi
done

# smbfs (Samba over network)
for MNT in `mount | grep " smbfs "`
do
 MNTPLC=`echo $MNT | cut -d \  -f 3`
 echo Unmounting $MNTPLC
 umount $MNTPLC
done

# nfs (Network File System)
for MNT in `mount | grep " nfs "`
do
 MNTPLC=`echo $MNT | cut -d \  -f 3`
 echo Unmounting $MNTPLC
 umount $MNTPLC
done

# interfaces
for IF in `echo $DOWNIFS`
do
 if [ `/sbin/ifconfig | grep -c "^$IF "` = 1 ]; then
  echo Bringing $IF down
  /etc/sysconfig/network-scripts/ifdown $IF
  if [ `echo $UPIFS | grep -c $IF` = 1 ]; then
   T_IFS="$T_IFS $IF"
  fi
 fi
done

# modules
for MOD in `echo $REMOVEMODS`
do
 if [ `/sbin/lsmod | grep -c $MOD` = 1 ]; then
  echo Removing $MOD
  /sbin/rmmod $MOD
  if [ `echo $INSERTMODS | grep -c $MOD` = 1 ]; then
   T_MODS="$T_MODS $MOD"
  fi
 fi
done

# stop gpm
if [ -f /var/lock/subsys/gpm ]; then
 T_GPM="yes"
 /etc/init.d/gpm stop
fi

# stop pcmcia
if [ -f /var/lock/subsys/pcmcia ]; then
 T_PCMCIA="yes"
 /etc/init.d/pcmcia stop
fi

# stop named
if [ -f /var/lock/subsys/named ]; then
 T_NAMED="yes"
 /etc/init.d/named stop
fi

# stop smb
if [ -f /var/lock/subsys/smb ]; then
 T_SMB="yes"
 /etc/init.d/smb stop
fi

#sync the clock
echo Syncing to hardware clock
/sbin/hwclock --systohc

#sync the disk
sync

#now, do the suspend
echo Suspending
echo "#########################"
echo 1 0 > /proc/sys/kernel/swsusp

#wait on resume
echo Waiting to resume
sleep 5

echo Starting resume

#sync the clock
echo Syncing from hardware clock
/sbin/hwclock --hctosys

#start pcmcia
if [ $T_PCMCIA == "yes" ]; then
 /etc/init.d/pcmcia start
fi

#start gpm
if [ $T_GPM == "yes" ]; then
 /etc/init.d/gpm start
fi

#modules
for MOD in `echo $T_MODS`
do
 echo Adding $MOD
 /sbin/modprobe $MOD
done

#interfaces
for IF in `echo $T_IFS`
do
 echo Bringing up $IF
 /etc/sysconfig/network-scripts/ifup $IF
done

#start named
if [ $T_NAMED == "yes" ]; then
 /etc/init.d/named start
fi

#start named
if [ $T_SMB == "yes" ]; then
 /etc/init.d/smb start
fi

#mounts
for MNT in `echo $T_MNTS`
do
 echo Mounting $MNT
 /bin/mount $MNT
done

echo Done resuming!