clonezilla 3.5.2-2 / usr / sbin / prep-ocsroot

#!/bin/bash
# License: GPL 
# Author: Steven Shiau <steven _at_ nchc org tw>
# Description: Program to prepare Clonezilla live image home dir.

#
DRBL_SCRIPT_PATH="${DRBL_SCRIPT_PATH:-/usr/share/drbl}"
. $DRBL_SCRIPT_PATH/sbin/drbl-conf-functions
. /etc/drbl/drbl-ocs.conf
. $DRBL_SCRIPT_PATH/sbin/ocs-functions

# Default we will check if $ocsroot is a mountpoint after the mount action is done.
chk_ocsroot_mountpont="yes"
ntfs_mount_warning="no"
# Ref: https://sourceforge.net/tracker/?func=detail&atid=671653&aid=2949613&group_id=115473
# For cifs, noatime and nodiratime won't be honored, but cifs won't exit with error. It just ignores nodiratime.
# For sshfs, nodiratime is not honored, and sshfs will exit with error.
# For nfs, both noatime and nodiratime are honored.
# Therefore we put noatime only, and add "nodiratime" for nfs, hfsplus and other fs.
def_mount_opt="noatime" 

# Load the config in ocs-live.conf. This is specially for Clonezilla live. It will overwrite some settings of /etc/drbl/drbl-ocs.conf, such as $DIA...
[ -e "/etc/ocs/ocs-live.conf" ] && . /etc/ocs/ocs-live.conf

#
check_if_root

# functions
USAGE() {
    echo "Usage:"
    echo "Prepare the clonezilla image dir"
    echo "$0 [OPTION]"
    language_help_prompt_by_idx_no
    dialog_like_prog_help_prompt
    echo "-s, --skip-ocsroot-mountpoint-chk   Skip checking if Clonezilla image $ocsroot is a mountpoint."
    echo "-t, --ocsroot-resource-type  TYPE   Assign the Clonezilla image home type, available TYPE: local_dev, ssh_server, samba_server, nfs_server, enter_shell, skip" 
    echo "Ex. $0 -l en_US.UTF-8"
}
prepare_mnt_point_ocsroot() {
  if mountpoint $ocsroot &>/dev/null; then
    echo "Umounting the existing $ocsroot..."
    umount $ocsroot
  fi
  echo "Preparing the mount point $ocsroot..."
  [ -L "$ocsroot" ] && rm -f $ocsroot
  [ ! -d "$ocsroot" ] && mkdir -p $ocsroot
  if [ ! -d "$ocsroot" ]; then
    [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
    echo "$ocsroot is NOT a directory! Failed to create directory $ocsroot! No mount point for $ocsroot!"
    [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
    echo "$msg_program_stop!"
    exit 1
  fi
} # end of prepare_mnt_point_ocsroot
#
get_existing_dir() {
   # show existing dir so that user can choose then return chosen to file ANS_TMP
   local wk_dir="$1"
   local ANS_TMP="$2"
   local tgt_file= ans_=
   local ASK_DIRNAME=1
   local TMP=`mktemp /tmp/ocs.XXXXXX`
   trap "[ -f "$TMP" ] && rm -f $TMP" HUP INT QUIT TERM EXIT
   numfiles=`ls $wk_dir 2> /dev/null | wc -l`
   numfiles=`expr $numfiles + 0`
   # list the previous saved images
   # the list of images can be put in one page
   filelist="/ $(rep_whspc_w_udrsc "$msg_top_directory_in_local_dev")"
   numfiles=1
   echo -n "Scanning dir $wk_dir."
   for file in $wk_dir/*; do
     echo -n "."
     # Only directory ..., not file
     [ ! -d "$file" ] && continue
     # Exclude those special name dir, e.g. with space, or beginning with "-"
     [ -n "$(echo $file | grep -E "[[:space:]]")" ] && continue
     [ -n "$(echo "$(basename "$file")" | grep -E "^-+")" ] && continue
     # Skip Clonezilla image dir
     [ -e "$file/disk" -a -n "$(ls $file/*-pt.sf 2>/dev/null)" ] && continue
     [ -e "$file/parts" -a -n "$(ls $file/*-pt.sf 2>/dev/null)" ] && continue
     fileinfo="$(unalias ls 2>/dev/null; ls -ldh "$file" 2>/dev/null| awk '{ print $6"_"$7; }')"
     filelist="$filelist $(basename "$file") $fileinfo"
     numfiles=`expr $numfiles + 1`
   done
   echo " done!"

   if [ $numfiles -gt 0 ]; then
     if [ $numfiles -lt $MAX_DIALOG_HEIGHT ]; then
       height="$numfiles"
     else
       height="$MAX_DIALOG_HEIGHT"
     fi
     while [ "$ASK_DIRNAME" -ne 0 ]; do
       $DIA \
         --backtitle "$msg_nchc_free_software_labs" \
         --title "$msg_nchc_clonezilla" \
         --menu "$msg_which_dir_as_clonezilla_img_home:" 0 $RESTORE_DIA_WIDTH \
         $height $filelist 2> $TMP
       tgt_file="$(cat $TMP)"
       if [ -z "$tgt_file" ]; then
         $DIA --backtitle "$msg_nchc_free_software_labs" --title "$msg_nchc_clonezilla" \
        --yesno "$msg_you_must_input_filename!\n$msg_do_u_want_to_do_it_again!" 0 0 
         ans_="$?"
         case "$ans_" in
           0) # yes is chosen
              ASK_DIRNAME=1;;
           1) # no is chosen
              echo "$msg_program_stop!"
              [ -f "$TMP" ] && rm -f $TMP
	      if mountpoint $local_dev_mntpt &>/dev/null; then
		umount $local_dev_mntpt
	      fi
              exit 1;;
         esac
       else
         ASK_DIRNAME=0
       fi
     done
   else
     [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
     echo "No disk image is found in $wk_dir.. Make sure you already saved an image! $msg_program_stop!!!"
     [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
     exit 1
   fi
   [ -f "$TMP" ] && rm -f $TMP
   # return the valule
   echo $tgt_file > $ANS_TMP
} # end of get_existing_dir
do_mount_local_dev() {
   local target_part part_fs # target_part is like hda1, sda1...
   local local_dev_mntpt sel_dir

   prepare_mnt_point_ocsroot
   [ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
   echo "$msg_prompt_for_insert_USB_dev_if_necessary"
   [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
   echo -n "$msg_press_enter_to_continue..."
   read
   # Force kernel to re-read the partition table
   echo "Informing the OS of partition table changes..."
   partprobe 2>/dev/null
   echo "Mounting local dev as $ocsroot..."
   ANS_TMP=`mktemp /tmp/ocs_ans.XXXXXX`
   trap "[ -f "$ANS_TMP" ] && rm -f $ANS_TMP" HUP INT QUIT TERM EXIT
   get_input_dev_name $ANS_TMP partition menu yes "$msg_device_to_mount_as_ocsroot_do_not_mount_target_dev. $msg_linux_parts_MS_mapping"
   # we have to remove " (comes with checklist in dialog) so that for loop
   # will work (Specially for FC3/4...)
   target_part="$(cat $ANS_TMP | tr -d \")"
   [ -f "$ANS_TMP" ] && rm -f $ANS_TMP
   [ -z "$target_part" ] && exit 1
   check_input_partition $target_part
   # check if $target_part is ntfs or others
   part_fs="$(LANG=C ocs-get-part-info /dev/$target_part filesystem)"
   echo "/dev/$target_part filesystem: $part_fs"
   local_dev_mntpt="/tmp/local-dev"
   mkdir -p $local_dev_mntpt
   case "$part_fs" in 
     ntfs) 
           if [ "$ntfs_mount_warning" = "yes" ]; then
             [ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
             echo "$msg_warning_mount_ntfs_writable"
             echo "$msg_are_u_sure_u_want_to_continue ?"
             [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
             echo -n "[y/N] "
             read continue_mount_ntfs_3g
             case "$continue_mount_ntfs_3g" in
               y|Y|[yY][eE][sS])
                  echo "$msg_ok_let_do_it"
                  ;;
               *)
                  echo "$msg_program_stop"
                  exit 1
                  ;;
             esac
           fi
           echo ntfs-3g /dev/$target_part $local_dev_mntpt -o $def_mount_opt
           ntfs-3g /dev/$target_part $local_dev_mntpt -o $def_mount_opt
           if ! mountpoint $local_dev_mntpt &>/dev/null; then
             [ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
             echo "Looks like $local_dev_mntpt is not mounted normally! Maybe the NTFS file system in /dev/$target_part was not unmounted normally. Do you want to try to mount it with option "-o force" ? ///NOTE/// This is a little dangerous!"
             [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
             echo -n "[y/N] "
             read mount_ntfs_with_force
             case "$mount_ntfs_with_force" in
               y|Y|[yY][eE][sS])
                  echo "$msg_ok_let_do_it"
		  echo "Run ntfsfix on /dev/$target_part first..."
		  ntfsfix /dev/$target_part
		  echo "Run ntfs-3g /dev/$target_part $local_dev_mntpt -o force..."
                  ntfs-3g /dev/$target_part $local_dev_mntpt -o force
                  ;;
             esac
           fi
	   ;;
     hfsplus) 
           [ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
           echo "$msg_warning_mount_hfsplus_writable"
           echo "$msg_are_u_sure_u_want_to_continue ?"
           [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
           echo -n "[y/N] "
           read continue_mount_hfsplus
           case "$continue_mount_hfsplus" in
             y|Y|[yY][eE][sS])
                echo "$msg_ok_let_do_it"
                ;;
             *)
                echo "$msg_program_stop"
                exit 1
                ;;
           esac
	   echo mount -t hfsplus -o force,$def_mount_opt,nodiratime /dev/$target_part $local_dev_mntpt
	   LC_ALL=C mount -t hfsplus -o force,$def_mount_opt,nodiratime /dev/$target_part $local_dev_mntpt
	   ;;
     *)    echo mount -t auto -o $def_mount_opt,nodiratime /dev/$target_part $local_dev_mntpt
           LC_ALL=C mount -t auto -o $def_mount_opt,nodiratime /dev/$target_part $local_dev_mntpt 
	   ;;
   esac
   #[ "$chk_ocsroot_mountpont" = "yes" ] && check_if_ocsroot_a_mountpoint
   sel_dir="$(mktemp /tmp/sel_dir.XXXXXX)"
   get_existing_dir $local_dev_mntpt $sel_dir
   real_ocsroot="$(cat $sel_dir)"
   [ -f "$sel_dir" -a -n "$sel_dir" ] &&  rm -f $sel_dir
   mount --bind -o $def_mount_opt,nodiratime $local_dev_mntpt/$real_ocsroot $ocsroot
   [ "$chk_ocsroot_mountpont" = "yes" ] && check_if_ocsroot_a_mountpoint
} # end of do_mount_local_dev
#
do_mount_iscsi_server(){
   # Now this function only supports iSCSI without authentication
   local TMP srv_default iscsi_srv iscsi_target iscsi_account iscsi_password iscsi_port iscsi_port_def iscsi_extra_opt
   # Default settings
   iscsi_port_def="3260"
   iscsi_extra_opt=""

   network_config_if_necessary
   prepare_mnt_point_ocsroot
   echo "Mounting remote directory on iSCSI server as $ocsroot..."

   TMP="$(mktemp /tmp/iscsi_tmp.XXXXXX)"
   trap "[ -f "$TMP" ] && rm -f $TMP" HUP INT QUIT TERM EXIT
   # (1) iSCSI server IP address or FQDN
   srv_default="$(LC_ALL=C route -n | grep "^0.0.0.0" | awk -F" " '{print $2}')"

   while [ -z "$iscsi_srv" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount iSCSI" --inputbox "$msg_ip_address_or_FQDN_of_server:" \
     0 0 $srv_default $DIA_ESC \
     2> $TMP
     iscsi_srv="$(cat $TMP)"
   done
   echo "iSCSI server is: $iscsi_srv"
   # clean tmp file
   echo "" > $TMP

   # (1b) iscsi port
   while [ -z "$iscsi_port" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount iSCSI" --inputbox "$msg_iscsi_port_on_server:" \
     0 0 $iscsi_port_def $DIA_ESC \
     2> $TMP
     iscsi_port="$(cat $TMP)"
   done
   echo "iSCSI port on server is: $iscsi_port"
   # clean tmp file
   echo "" > $TMP

   # (2a) account
   while [ -z "$iscsi_account" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount iSCSI" --inputbox "$msg_account_in_server, $msg_ex john:" \
     0 0 your_username $DIA_ESC \
     2> $TMP
     iscsi_account="$(cat $TMP)"
   done
   echo "iSCSI account in $iscsi_srv is: $iscsi_account"
   # clean tmp file
   echo "" > $TMP

   # (2b) password
   while [ -z "$iscsi_password" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount iSCSI" --inputbox "$msg_account_in_server:" \
     0 0 your_password $DIA_ESC \
     2> $TMP
     iscsi_password="$(cat $TMP)"
   done
   echo "iSCSI password in $iscsi_srv is: $iscsi_password"
   # clean tmp file
   echo "" > $TMP

   # get iscsi disk
   iscsiadm -m discovery -t sendtargets -p $iscsi_srv | awk '{print $2}' | head -n 1 > $TMP
   #iscsiadm -m discovery -t sendtargets -p $iscsi_srv | awk '{print $2}' > $TMP

   iscsi_target="$(cat $TMP)"

   # show discoveried targets
   $DIA --backtitle "$msg_nchc_free_software_labs" --title "Mount iSCSI" \
   --msgbox "The discover target(s) as following: $(cat $TMP)" 0 0 

#   $DIA --backtitle "$msg_nchc_free_software_labs" --title "Mount sshfs" \
#   --msgbox "$msg_now_you_have_to_enter_passwd: $ssh_account@$ssh_srv:$sshfs_dir ($msg_confirm_ssh_server_might_be_necessary)" 0 0 

   # get iscsi disk
   iscsiadm -m node -T $iscsi_target -p $iscsi_srv -l
   iscsi_dev=$(dmesg |grep -A 1 IET  | tail -n 1 | awk -F"[" '{print $2}' | awk -F"]" '{print $1}')
   if [ -z "$iscsi_dev" ]; then
     [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
     echo "iSCSI device was not found!"
     [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
     echo "$msg_program_stop!"
     exit 1
   fi

   # delay 2 seconds to waiting iscsi device appear
   sleep 2

   [ -f "$TMP" ] && rm -f $TMP

   if [ -e /dev/$iscsi_dev ]; then
     echo "Mounting iSCSI device by:"
     echo "mount /dev/$iscsi_dev $ocsroot"
     LC_ALL=C mount /dev/$iscsi_dev $ocsroot
     [ "$chk_ocsroot_mountpont" = "yes" ] && check_if_ocsroot_a_mountpoint
   else
     [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
     echo "iSCSI device /dev/$iscsi_dev was not found!"
     [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
     echo "$msg_program_stop!"
     exit 1
   fi
} # end of do_mount_iscsi_server
#
do_mount_ssh_server(){
   local TMP srv_default ssh_srv ssh_account sshfs_dir ssh_port ssh_port_def sshfs_extra_opt
   # Default settings
   ssh_port_def="22"
   sshfs_extra_opt="-o nonempty,$def_mount_opt"

   network_config_if_necessary
   prepare_mnt_point_ocsroot
   echo "Mounting remote directory on ssh server as $ocsroot..."
   # sshfs ACCOUNT@SSH_SERVER:/ABSOLUTE_PATH $ocsroot
   TMP=$(mktemp /tmp/sshfs_tmp.XXXXXX)
   trap "[ -f "$TMP" ] && rm -f $TMP" HUP INT QUIT TERM EXIT
   # (1) ssh server IP address or FQDN
   srv_default="$(LC_ALL=C route -n | grep "^0.0.0.0" | awk -F" " '{print $2}')"
   while [ -z "$ssh_srv" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount sshfs" --inputbox "$msg_ip_address_or_FQDN_of_server:" \
     0 0 $srv_default $DIA_ESC \
     2> $TMP
     ssh_srv="$(cat $TMP)"
   done
   echo "SSH server is: $ssh_srv"
   # clean tmp file
   echo "" > $TMP
   # (1b) ssh port
   while [ -z "$ssh_port" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount sshfs" --inputbox "$msg_ssh_port_on_server:" \
     0 0 $ssh_port_def $DIA_ESC \
     2> $TMP
     ssh_port="$(cat $TMP)"
   done
   echo "SSH port on server is: $ssh_port"
   # clean tmp file
   echo "" > $TMP
   # (2) account
   while [ -z "$ssh_account" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount sshfs" --inputbox "$msg_account_in_server, $msg_ex root:" \
     0 0 root $DIA_ESC \
     2> $TMP
     ssh_account="$(cat $TMP)"
   done
   echo "SSH account in $ssh_srv is: $ssh_account"
   # clean tmp file
   echo "" > $TMP
   # (3) absolute path 
   while [ -z "$sshfs_dir" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount sshfs" --inputbox "$msg_sshfs_dir_path, $msg_ex $ocsroot" \
     0 0 $ocsroot $DIA_ESC \
     2> $TMP
     sshfs_dir="$(cat $TMP)"
   done
   echo "sshfs dir in $sshfs_dir is: $sshfs_dir"
   $DIA --backtitle "$msg_nchc_free_software_labs" --title "Mount sshfs" \
   --msgbox "$msg_now_you_have_to_enter_passwd: $ssh_account@$ssh_srv:$sshfs_dir ($msg_confirm_ssh_server_might_be_necessary)" 0 0 
   [ -f "$TMP" ] && rm -f $TMP
   echo "Mounting sshfs by:"
   echo "sshfs $sshfs_extra_opt -p $ssh_port \"$ssh_account\"@$ssh_srv:\"$sshfs_dir\" $ocsroot"
   LC_ALL=C sshfs $sshfs_extra_opt -p $ssh_port "$ssh_account"@$ssh_srv:"$sshfs_dir" $ocsroot
   [ "$chk_ocsroot_mountpont" = "yes" ] && check_if_ocsroot_a_mountpoint
} # end of do_mount_ssh_server
#
do_mount_samba_server(){
   local TMP srv_default smb_srv smb_account

   network_config_if_necessary
   prepare_mnt_point_ocsroot
   echo "Mounting remote directory on Samba server as $ocsroot..."
   # mount -t cifs -o username=your_user_name //192.168.200.254/images /home/partimag
   TMP="$(mktemp /tmp/cifs_tmp.XXXXXX)"
   trap "[ -f "$TMP" ] && rm -f $TMP" HUP INT QUIT TERM EXIT
   # (1) samba server IP address or FQDN
   srv_default="$(LC_ALL=C route -n | grep "^0.0.0.0" | awk -F" " '{print $2}')"
   while [ -z "$smb_srv" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount Samba server" --inputbox "$msg_ip_address_or_FQDN_of_server" \
     0 0 $srv_default $DIA_ESC \
     2> $TMP
     smb_srv="$(cat $TMP)"
   done
   echo "Samba server is: $smb_srv"
   # clean tmp file
   echo "" > $TMP
   # (2) domain
   $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
   "Mount Samba server" --inputbox "$msg_smb_domain_in_server, $msg_if_no_smb_domain_skip_this" \
   0 0 "" $DIA_ESC \
   2> $TMP
   smb_domain="$(cat $TMP)"
   echo "Domain in $smb_srv is: $smb_domain"
   # clean tmp file
   echo "" > $TMP
   # (3) account
   while [ -z "$smb_account" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount Samba server" --inputbox "$msg_account_in_server, $msg_ex administrator" \
     0 0 administrator $DIA_ESC \
     2> $TMP
     smb_account="$(cat $TMP)"
   done
   echo "Account in $smb_srv is: $smb_account"
   # clean tmp file
   echo "" > $TMP
   # (4) absolute path 
   while [ -z "$smbfs_dir" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount Samba server" --inputbox "$msg_ocs_img_dir_path, $msg_ex /images" \
     0 0 /images $DIA_ESC \
     2> $TMP
     smbfs_dir="$(cat $TMP)"
   done
   echo "The path in samba server is: $smbfs_dir"
   $DIA --backtitle "$msg_nchc_free_software_labs" --title "Mount Samba server" \
   --msgbox "$msg_now_you_have_to_enter_passwd \"$smb_account\"@$smb_srv:$smbfs_dir" 0 0 
   [ -f "$TMP" ] && rm -f $TMP
   if [ -n "$smb_domain" ]; then
     smb_domain_opt=",domain=$smb_domain"
   fi
   # Remove the / in the beging if it exists, since we will add it later
   smbfs_dir="$(echo $smbfs_dir | sed -e "s|^/||g")"
   if [ -z "$(LC_ALL=C lsmod | grep -Ew "^cifs")" ]; then
     # In case cifs is not loaded
     modprobe cifs
   fi
   echo "Mounting samba server by:"
   echo "mount -t cifs -o user=\"${smb_account}${smb_domain_opt}\" \"//${smb_srv}/${smbfs_dir}\" $ocsroot" 
   LC_ALL=C mount -t cifs -o user="${smb_account}${smb_domain_opt}" "//${smb_srv}/${smbfs_dir}" $ocsroot
   [ "$chk_ocsroot_mountpont" = "yes" ] && check_if_ocsroot_a_mountpoint
} # end of do_mount_samba_server
#
check_portmap_nfs_common_daemon() {
  # This function is only for Clonezilla live (client environment), i.e. Debian. Since in DRBL environment, portmap and nfs-common should be running in client.
  local pid pid_portmap pid_rpcbind pid_rpc_statd
  # If not debian, do nothing. Since we are focusing this on Clonezilla live.
  if ! is_boot_from_live; then
    return 1
  fi
  if [ -z "$(LC_ALL=C lsmod | grep -Ew "^nfs")" ]; then
    # An insurance to force to load nfs module. On Ubuntu karmic when mounting nfs4 server, failed due to nfs module not loaded.
    # http://sourceforge.net/tracker/?func=detail&atid=671650&aid=2936441&group_id=115473
    modprobe nfs
  fi
  pid_portmap="$(LC_ALL=C pidof portmap)"
  pid_rpcbind="$(LC_ALL=C pidof rpcbind)"
  if [ -z "$pid_portmap" -a -z "$pid_rpcbind" ]; then
    echo "Service portmap or rpcbind is necesary for NFS client. Start it now..."
    if [ -e "/etc/init.d/portmap" ]; then
      /etc/init.d/portmap start
    else
      /etc/init.d/rpcbind start
    fi
  fi
  # We assume nfs-common only runs rpc.statd (for NFS3), no rpc.lockd. This is true for modern kernel (>=2.4).
  pid_rpc_statd="$(LC_ALL=C pidof rpc.statd)"
  if [ -z "$pid_rpc_statd" ]; then
    echo "nfs-common service is necesary for NFS client. Start it now..."
    /etc/init.d/nfs-common start
  fi
} # end of check_portmap_nfs_common_daemon
#
do_mount_nfs_server(){
   local TMP srv_default nfs_srv nfs_dir nfs_ver img_dir_eg nfsvers_opt

   network_config_if_necessary
   prepare_mnt_point_ocsroot
   echo "Mounting remote directory on NFS (Ver 3) server as $ocsroot..."
   # mount -t nfs 192.168.200.254:/work/exp /home/partimag
   TMP="$(mktemp /tmp/nfs.XXXXXX)"
   trap "[ -f "$TMP" ] && rm -f $TMP" HUP INT QUIT TERM EXIT
   # (0) NFS version
   while [ -z "$nfs_ver" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "NFS version" --menu "$msg_ocs_live_mount_nfs_ser_ver" \
     0 0 0 $DIA_ESC \
     "nfs"    "NFS v2, v3" \
     "nfs4"   "NFS v4" \
     2> $TMP
     nfs_ver="$(cat $TMP)"
   done
   # Decide the prompt image path example and the "nfsvers" option
   case "$nfs_ver" in
     nfs)  img_dir_eg="/home/partimag/"
	   nfsvers_opt="nfsvers=3"
	   ;;
     nfs4) img_dir_eg="/partimag/"
	   nfsvers_opt=""
	   ;;
   esac
   # (1) nfs server IP address or FQDN
   srv_default="$(LC_ALL=C route -n | grep "^0.0.0.0" | awk -F" " '{print $2}')"
   while [ -z "$nfs_srv" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount NFS server" --inputbox "$msg_ip_address_or_FQDN_of_server:" \
     0 0 $srv_default $DIA_ESC \
     2> $TMP
     nfs_srv="$(cat $TMP)"
   done
   echo "NFS server is: $nfs_srv"
   # (2) absolute path 
   while [ -z "$nfs_dir" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount NFS server" --inputbox "$msg_ocs_img_dir_path, $msg_ex $img_dir_eg:" \
     0 0 $img_dir_eg $DIA_ESC \
     2> $TMP
     nfs_dir="$(cat $TMP)"
   done
   echo "The path in nfs server is: $nfs_dir"
   [ -f "$TMP" ] && rm -f $TMP
   canonical_hostname_prep $nfs_srv
   check_portmap_nfs_common_daemon
   echo "Mounting NFS server by:"
   echo "mount -t $nfs_ver -o $def_mount_opt,nodiratime,$nfsvers_opt $nfs_srv:$nfs_dir $ocsroot" 
   LC_ALL=C mount -t $nfs_ver -o $def_mount_opt,nodiratime,$nfsvers_opt $nfs_srv:$nfs_dir $ocsroot
   [ "$chk_ocsroot_mountpont" = "yes" ] && check_if_ocsroot_a_mountpoint
   if LC_ALL=C dpkg -L unfs3 &>/dev/null; then
     # A workaround to make unfs3 service work well. It seems that after nfs-common is started, the rpcbind does not work with unfs3 which will be started later, therefore here we force to restart rpcbind
     if [ -e "/etc/init.d/portmap" ]; then
       /etc/init.d/portmap stop
       sleep 1
       /etc/init.d/portmap start
     else
       /etc/init.d/rpcbind stop
       sleep 1
       /etc/init.d/rpcbind start
     fi
   fi
} # end of do_mount_nfs_server

do_mount_ftp_server(){
   # Use curlftpfs to mount ftp server
   local TMP srv_default ftp_srv ftp_account ftpfs_dir

   network_config_if_necessary
   prepare_mnt_point_ocsroot
   echo "Mounting remote directory on ftp server as $ocsroot..."
   # ftpfs ACCOUNT@FTP_SERVER:/ABSOLUTE_PATH $ocsroot
   TMP="$(mktemp /tmp/ftpfs_tmp.XXXXXX)"
   trap "[ -f "$TMP" ] && rm -f $TMP" HUP INT QUIT TERM EXIT
   # (1) ftp server IP address or FQDN
   srv_default="$(LC_ALL=C route -n | grep "^0.0.0.0" | awk -F" " '{print $2}')"
   while [ -z "$ftp_srv" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount ftpfs" --inputbox "$msg_ip_address_or_FQDN_of_server:" \
     0 0 $srv_default $DIA_ESC \
     2> $TMP
     ftp_srv="$(cat $TMP)"
   done
   echo "FTP server is: $ftp_srv"
   # clean tmp file
   echo "" > $TMP
   # (2) account
   while [ -z "$ftp_account" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount ftpfs" --inputbox "$msg_account_in_server, $msg_ex john:" \
     0 0 $DIA_ESC \
     2> $TMP
     ftp_account="$(cat $TMP)"
   done
   echo "FTP account in $ftp_srv is: $ftp_account"
   # clean tmp file
   echo "" > $TMP
   # (3) absolute path 
   while [ -z "$ftpfs_dir" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount ftpfs" --inputbox "$msg_ftpfs_dir_path, $msg_ex /images" \
     0 0 $DIA_ESC \
     2> $TMP
     # remove leading / since something like
     # curlftpfs ftp://192.168.120.254//images /home/partimag -o direct_io,kernel_cache,nonempty,user=account
     # will be denied. The error is like:
     # Error connecting to ftp: Server denied you to change to the given directory
     ftpfs_dir="$(cat $TMP | sed -e "s|^/*||g")"
   done
   echo "ftpfs dir in $ftpfs_dir is: $ftpfs_dir"
   [ -f "$TMP" ] && rm -f $TMP
   $DIA --backtitle "$msg_nchc_free_software_labs" --title "Mount FTP server" \
   --msgbox "$msg_now_you_have_to_enter_passwd for the account $ftp_account on ftp://$ftp_srv/$ftpfs_dir" 0 0 
   echo "Mounting ftpfs by:"
   echo "curlftpfs -o direct_io,kernel_cache,nonempty,user=$ftp_account ftp://$ftp_srv/$ftpfs_dir $ocsroot ..." 
   LC_ALL=C curlftpfs -o direct_io,kernel_cache,nonempty,user=$ftp_account ftp://$ftp_srv/$ftpfs_dir $ocsroot 
   [ "$chk_ocsroot_mountpont" = "yes" ] && check_if_ocsroot_a_mountpoint
} # end of do_mount_ftp_server

do_mount_webdav_server(){
   # ///NOTE/// This function will NOT work since davfs2 is not suitable for larger file transfer. The cache mechanism is the key problem (ref: https://sourceforge.net/forum/forum.php?thread_id=2248597&forum_id=82589).
   # Here we keep this to avoid writting it again in the future.
   # Use davfs2 to mount webdav server
   local TMP srv_default url_default davfs_url
   local default_dav_path_prompt="webdav"

   network_config_if_necessary
   prepare_mnt_point_ocsroot
   echo "Mounting remote directory on webdav server as $ocsroot..."
   # mount -t davfs -o noexec $WEBDAV_SERVER:/$PATH $ocsroot
   TMP="$(mktemp /tmp/davfs_tmp.XXXXXX)"
   trap "[ -f "$TMP" ] && rm -f $TMP" HUP INT QUIT TERM EXIT
   # (1) davfs server url 
   srv_default="$(LC_ALL=C route -n | grep "^0.0.0.0" | awk -F" " '{print $2}')"
   url_default="http://$srv_default/$default_dav_path_prompt"
   while [ -z "$davfs_url" ]; do
     $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
     "Mount WebDAV fs" --inputbox "msg_url_of_davfs_server:" \
     0 0 $url_default $DIA_ESC \
     2> $TMP
     davfs_url="$(cat $TMP)"
   done
   echo "WebDAV URL is: $davfs_url"
   # clean tmp file
   echo "" > $TMP
   $DIA --backtitle "$msg_nchc_free_software_labs" --title "Mount WebDAV server" \
   --msgbox "msg_now_you_might_have_to_enter_username_passwd $davfs_url" 0 0 
   echo "Mounting davfs by:"
   echo "mount -t davfs -o noexec $davfs_url $ocsroot ..." 
   LC_ALL=C mount -t davfs -o noexec $davfs_url $ocsroot
   [ "$chk_ocsroot_mountpont" = "yes" ] && check_if_ocsroot_a_mountpoint
} # end of do_mount_webdav_server
#
find_ocsroot_dev_description(){
  local ocsroot_parent filesystem writable rw_test_file
  filesystem="$(get_dir_filesystem $ocsroot)"
  rw_test_file="$(mktemp $ocsroot/rw_test.XXXXXX)"
  rc=$?
  if [ "$rc" -eq 0 ]; then
    writable="yes"
  else
    writable="no"
  fi
  [ -f "$rw_test_file" ] && rm -f $rw_test_file
  case "$filesystem" in
    tmpfs) livemedia_des="$msg_writable_dev_ramdisk" ;;
    nfs|smbfs|cifs) livemedia_des="$msg_writable_fs_ex_nfs_smbfs" ;;
    rootfs)
      # This is special case in Debian Live. 
      # Check if / is using unionfs and tmpfs. In Debian Live, it's like:
      # tmpfs /cow tmpfs rw 0 0
      # unionfs / unionfs rw,dirs=/cow=rw:/filesystem.squashfs=ro,debug=4294967295,delete=whiteout 0 0
      if [ -n "$(grep -E "^tmpfs /cow" /proc/mounts)" -a \
           -n "$(grep -E "^unionfs / unionfs rw,dirs=/cow=rw:" /proc/mounts)" ]; then
        livemedia_des="$msg_writable_dev_ramdisk"
      fi
      ;;
    aufs|overlayfs)
      # This is special case in Ubuntu Live or Debian Lenny live. 
      # /proc/mounts is like:
      # aufs on / type aufs (rw)
      livemedia_des="$msg_writable_dev_ramdisk"
      ;;
    fuse)
      # Fuse... maybe sshfs or ftpfs (not on yet)
      if [ "$writable" = "yes" ]; then
        livemedia_des="$msg_writable_dev_fuse"
      else
        livemedia_des="$msg_readonly_dev_fuse"
      fi
      ;;
    *)
      # not RAM disk,  
      if [ "$writable" = "yes" ]; then
        livemedia_des="$msg_writable_dev_ex_usb_stick"
      else
        livemedia_des="$msg_readonly_dev_ex_CD"
      fi
      ;;
  esac
  [ -z "$livemedia_des" ] && livemedia_des="$msg_unknown"
} # end of find_ocsroot_dev_description
#
get_ocsroot_resource() {
  find_ocsroot_dev_description
  local TMP
  #
  if [ -z "$ocsroot_src" ]; then
    TMP=$(mktemp /tmp/ocsrootmenu.XXXXXX)
    trap "[ -f "$TMP" ] && rm -f $TMP" HUP INT QUIT TERM EXIT
    $DIA --backtitle "$msg_nchc_free_software_labs" --title  \
    "$msg_mount_ocsroot_img_hint_short_des" --menu "$msg_mount_ocsroo_img_hint_long_des\n$msg_choose_mode:" \
    0 0 0 $DIA_ESC \
    "local_dev"    "$msg_mount_local_dev" \
    "ssh_server"   "$msg_mount_sshfs" \
    "samba_server" "$msg_mount_smbfs" \
    "nfs_server"   "$msg_mount_nfs" \
    "enter_shell"  "$msg_enter_cml. $msg_do_it_manually" \
    "skip"         "$msg_skip_this_use_existing_ocsroot ($livemedia_des)" \
    2> $TMP
    # Since curlftpfs is not stable with partimage/ntfsclone, skip that now. We will turn it on when it's stable.
    #"ftp_server"   "$msg_mount_ftpfs ($msg_experimental, $msg_not_stable)" \
    # Since iSCSI is not ready yet. comment this:
    #"iscsi_server" "msg_mount_iscsi_server" \
    # Since davfs is not ready yet. comment this:
    #"webdav_server" "msg_mount_webdav_server" \
    ocsroot_src="$(cat $TMP)"
    echo "ocsroot device is $ocsroot_src"
    [ -f "$TMP" ] && rm -f $TMP
  fi
  case "$ocsroot_src" in
    "local_dev"|"ssh_server"|"samba_server"|"nfs_server"|"enter_shell"|"skip")
       true;;
    *)
       echo "\"$ocsroot_src\" is an unknown or unsupported type! You have to specify a correct ocsroot_src (local_dev, ssh_server, samba_server, nfs_server, enter_shell, or skip)"
       ;;
  esac
} # end of get_ocsroot_resource

#
while [ $# -gt 0 ]; do
  case "$1" in
    -l|--language)
	shift
        if [ -z "$(echo $1 |grep ^-.)" ]; then
          # skip the -xx option, in case 
	  specified_lang="$1"
	  shift
        fi
        [ -z "$specified_lang" ] && USAGE && exit 1
	;;
    -t|--ocsroot-resource-type)
        shift
        if [ -z "$(echo $1 |grep ^-.)" ]; then
          # skip the -xx option, in case 
          ocsroot_src="$1"
          shift
        fi
	[ -z "$ocsroot_src" ] && USAGE && exit 1
        ;;
    -s|--skip-ocsroot-mountpoint-chk) chk_ocsroot_mountpont="no"; shift;;
    -d0|--dialog)   DIA="dialog"; shift;;
    -d1|--Xdialog)  DIA="Xdialog"; shift;;
    -d2|--whiptail) DIA="whiptail"; shift;;
    -d3|--gdialog)  DIA="gdialog"; shift;;
    -d4|--kdialog)  DIA="kdialog"; shift;;
    -*) echo "${0}: ${1}: invalid option" >&2
        USAGE >& 2
        exit 2 ;;
    *)  break ;;
  esac
done
#
ask_and_load_lang_set $specified_lang

# check DIA
check_DIA_set_ESC $DIA

##############
#### main ####
##############

#
if [ -z "$ocsroot_src" ]; then
  get_ocsroot_resource
fi

#
case "$ocsroot_src" in
  local_dev)    do_mount_local_dev;;
  iscsi_server) do_mount_iscsi_server;;
  ssh_server)   do_mount_ssh_server;;
  samba_server) do_mount_samba_server;;
  nfs_server)   do_mount_nfs_server;;
  ftp_server)   do_mount_ftp_server;;
  webdav_server)
      # ///NOTE/// webdav_server will NOT work since davfs2 is not suitable for larger file transfer. The cache mechanism is the key problem (ref: https://sourceforge.net/forum/forum.php?thread_id=2248597&forum_id=82589).
      do_mount_webdav_server;;
  enter_shell) 
      echo $msg_enter_another_shell_hint_with_netcfg_prompt
      echo -n "$msg_press_enter_to_continue..."
      read
      /bin/bash
      ;;
  skip)
      echo "$msg_existing_setting_is:"
      echo $msg_delimiter_star_line
      df -ah
      echo $msg_delimiter_star_line
      echo -n "$msg_press_enter_to_continue..."
      read
      ;;
  *)
      echo "Unknown type of Clonezilla image home type!"
      echo "$msg_program_stop!"
      exit 1
      ;;
esac

echo "done!"
exit 0