Snapshot 3.0

#!/system/bin/sh

echo $0

multi_cpus=`find /sys/devices/system/cpu/cpu[1-9] -name online 2>/dev/null`
if [[ "${multi_cpus}" == "" ]]
then
  echo "Single CPU, continuing..."
else
  for cpu_online in ${multi_cpus}
  do
    echo "Disabling [${cpu_online}]"
    echo 0 > ${cpu_online}
  done
fi

init_rc_list=`ls /init*rc  | grep -v goldfish | tr '\n' ' '`
service_restart_list=""
abort=0

for blocking_pid in `fuser -m /extdata /data | sort | uniq`
do
  ### Find the name and parent pid of the blocking pid
  comm=`cat /proc/${blocking_pid}/comm`
  ppid=`cat /proc/${blocking_pid}/stat | awk '{print $4}'`

  ### If the parent pid is another process, set the blocking pid to the parent, the children will stop when the parent stops
  if [[ $ppid -gt 1 ]]
  then
    #echo -n "PARENT ppid = [${ppid}] "
    blocking_pid=${ppid}
    comm=`cat /proc/${blocking_pid}/comm`
  fi

  ### Determine what to do...
  if [[ "${comm}" == "sh" ]]
  then
    echo "There is an open shell using something in /extdata and/or /data... aborting."
    abort=1
  elif [[ "${comm}" == "zygote" ]]
  then
    if [[ "$zygote_stopped" == "" ]]
    then
      echo "Adding Zygote process"
      service_restart_list=" zygote ${service_restart_list} "
      #stop zygote
      zygote_stopped=yes
    fi
  elif [[ "${comm}" == "keystore" ]]
  then
    echo "Ignoring keystore, it's handled by pioneer /sbin/andsnap"
  elif [[ "${comm}" != "" ]]
  then
    echo -n "blocking_pid = [${blocking_pid}] comm = [${comm}] "
    service_name=`grep "^service.*\/${comm}" ${init_rc_list} | awk '{print $2}'`
    if [[ "${service_name}" != "" ]]
    then
      echo "${service_restart_list}" | grep -q " ${service_name} "
      if [[ $? -eq 0 ]]
      then
        echo "Service [${service_name}] has already been dealt with"
      else
        echo "Adding [${service_name}]"
        service_restart_list=" ${service_name} ${service_restart_list} "
        #stop ${service_name}
      fi
    else
      echo "No match for service, killing [${service_name}]"
      #killall ${comm}
    fi
  fi
done

echo "service_restart_list = [${service_restart_list}]"

[ $abort -ne 0 ] && exit 1

echo "Continuing on..."

for service in ${service_restart_list}
do
  echo "Stopping ${service}"
  stop ${service}
done

sync
sleep 10
sync
/sbin/andsnap $*

if [[ "${multi_cpus}" == "" ]]
then
  echo "Single CPU, continuing..."
else
  for cpu_online in ${multi_cpus}
  do
    echo "Re-enabling [${cpu_online}]"
    echo 1 > ${cpu_online}
  done
fi

for service in ${service_restart_list}
do
  echo "Starting ${service}"
  start ${service}
done