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#!/bin/sh
# SeTpartition user-friendly rewrite Fri Dec 15 13:17:40 CST 1995 pjv
# Rewrite to support filesystem plugins <david@slackware.com>, 07-May-2001
# Don't use plugins, make it work, pjv, 18-May-2001.
# Generalize tempscript creation and support JFS and XFS. pjv, 30-Mar-2002

TMP=/var/log/setup/tmp
NDIR=/dev/null
REDIR=/dev/tty4
T_PX="`cat $TMP/SeTT_PX`"

# FUNCTIONS

# crunch() -  remove extra whitespace
crunch () {
   read STRING;
   echo $STRING
}

# make_btrfs( dev ) - Create a new btrfs filesystem on the named dev.
# Parameters:  dev     Device node to format.
make_btrfs() {
   # get the size of the named partition
   SIZE=`get_part_size $1`
   # output a nice status message
   dialog --title "FORMATTING" \
   --backtitle "Formatting $1 with filesystem btrfs." \
   --infobox "Formatting $1  \n\
Size:  $SIZE \n\
Filesystem type: btrfs " 0 0
   # do the format
   if mount | grep "$1 " 1> $NDIR 2> $NDIR ; then
      umount $1 2> $NDIR
   fi
   mkfs.btrfs -f -d single -m single $1 1> $REDIR 2> $REDIR
}

# make_ext2( dev, check ) - Create a new ext2 filesystem on the named
#                                device.
# Parameters:  dev     Device node to format.
#              check   Perform fs check (y or n)
make_ext2() {
   # get the size of the named partition
   SIZE=`get_part_size $1`
   # output a nice status message
   dialog --title "FORMATTING" \
   --backtitle "Formatting $1 with filesystem ext2." \
   --infobox "Formatting $1  \n\
Size:  $SIZE \n\
Filesystem type: ext2" 0 0
   # do the format
   if mount | grep "$1 " 1> $NDIR 2> $NDIR ; then
      umount $1 2> $NDIR
   fi
   if [ "$2" = "y" ]; then
      mkfs.ext2 -F -F -c $1 1> $REDIR 2> $REDIR
   else
      mkfs.ext2 -F -F $1 1> $REDIR 2> $REDIR
   fi
}

# make_ext3( dev, check ) - Create a new ext3 filesystem on the named
#                                device.
# Parameters:  dev     Device node to format.
#              check   Perform fs check (y or n)
make_ext3() {
   # get the size of the named partition
   SIZE=`get_part_size $1`
   # output a nice status message
   dialog --title "FORMATTING" \
   --backtitle "Formatting $1 with filesystem ext3." \
   --infobox "Formatting $1  \n\
Size:  $SIZE \n\
Filesystem type: ext3" 0 0
   # do the format
   if mount | grep "$1 " 1> $NDIR 2> $NDIR ; then
      umount $1 2> $NDIR
   fi
   if [ "$2" = "y" ]; then
      mkfs.ext3 -F -F -c $1 1> $REDIR 2> $REDIR
   else
      mkfs.ext3 -F -F $1 1> $REDIR 2> $REDIR
   fi
}

# make_ext4( dev, check ) - Create a new ext4 filesystem on the named
#                                device.
# Parameters:  dev     Device node to format.
#              check   Perform fs check (y or n)
make_ext4() {
   # get the size of the named partition
   SIZE=`get_part_size $1`
   # output a nice status message
   dialog --title "FORMATTING" \
   --backtitle "Formatting $1 with filesystem ext4." \
   --infobox "Formatting $1  \n\
Size:  $SIZE \n\
Filesystem type: ext4" 0 0
   # do the format
   if mount | grep "$1 " 1> $NDIR 2> $NDIR ; then
      umount $1 2> $NDIR
   fi
   if [ "$2" = "y" ]; then
      mkfs.ext4 -F -F -c $1 1> $REDIR 2> $REDIR
   else
      mkfs.ext4 -F -F $1 1> $REDIR 2> $REDIR
   fi
}

# make_jfs( dev, check ) - Create a new jfs filesystem on the named
#                                device.
# Parameters:  dev     Device node to format.
#              check   Perform fs check (y or n)
make_jfs() {
   # get the size of the named partition
   SIZE=`get_part_size $1`
   # output a nice status message
   dialog --title "FORMATTING" \
   --backtitle "Formatting $1 with filesystem jfs." \
   --infobox "Formatting $1  \n\
Size:  $SIZE \n\
Filesystem type: jfs" 0 0
   # do the format
   if mount | grep "$1 " 1> $NDIR 2> $NDIR ; then
      umount $1 2> $NDIR
   fi
   if [ "$2" = "y" ]; then
      mkfs.jfs -c -q $1 1> $REDIR 2> $REDIR
   else
      mkfs.jfs -q $1 1> $REDIR 2> $REDIR
   fi
}

# make_reiserfs( dev ) - Create a new reiserfs filesystem on the named dev.
# Parameters:  dev     Device node to format.
make_reiserfs() {
   # get the size of the named partition
   SIZE=`get_part_size $1`
   # output a nice status message
   dialog --title "FORMATTING" \
   --backtitle "Formatting $1 with filesystem reiserfs." \
   --infobox "Formatting $1  \n\
Size:  $SIZE \n\
Filesystem type: reiserfs " 0 0
   # do the format
   if mount | grep "$1 " 1> $NDIR 2> $NDIR ; then
      umount $1 2> $NDIR
   fi
   echo "y" | mkreiserfs $1 1> $REDIR 2> $REDIR
}

# make_xfs( dev ) - Create a new xfs filesystem on the named dev
# Parameters:  dev     Device node to format.
make_xfs() {
   # get the size of the named partition
   SIZE=`get_part_size $1`
   # output a nice status message
   dialog --title "FORMATTING" \
   --backtitle "Formatting $1 with filesystem xfs." \
   --infobox "Formatting $1  \n\
Size:  $SIZE \n\
Filesystem type: xfs " 0 0
   # do the format
   if mount | grep "$1 " 1> $NDIR 2> $NDIR ; then
      umount $1 2> $NDIR
   fi
   mkfs.xfs -f $1 1> $REDIR 2> $REDIR
}

# gen_part_list() - Prints out a partition listing for the system into the
gen_part_list() {
   export COUNT=0
   cat $TMP/SeTplist | while [ 0 ]; do
      read PARTITION;
      if [ "$PARTITION" = "" ]; then
         break;
      fi
      # Variables, variables, variables
      NAME=`echo $PARTITION | crunch | cut -f 1 -d ' '`
      ALTNAME=""
      DEVICE=`echo "$PARTITION" | tr -d "*" | crunch | cut -f 1 -d ' '`
      SIZE=`get_part_size $DEVICE`
      # See if this partition is in use already
      if grep "$DEVICE " $TMP/SeTnative 1> $NDIR; then # it's been used
         ON=`grep "$DEVICE " $TMP/SeTnative | crunch | cut -f 2 -d ' '`
         ALTNAME="$DEVICE on $ON Linux ${SIZE}"
      fi
      # Add a menu item
      if [ "$ALTNAME" = "" ]; then
         echo "\"$NAME\" \"Linux ${SIZE}\" \\" >> $TMP/tempscript
         echo "false" > $TMP/SeTSKIP # this flag is used for non-root parts
      else
         echo "\"(IN USE)\" \"$ALTNAME\" \\" >> $TMP/tempscript
      fi
   done
   echo "\"---\" \"(done adding partitions, continue with setup)\" \\" >> $TMP/tempscript
   echo "\"---\" \"(done adding partitions, continue with setup)\" \\" >> $TMP/tempscript
   echo "\"---\" \"(done adding partitions, continue with setup)\" \\" >> $TMP/tempscript
   echo "\"---\" \"(done adding partitions, continue with setup)\" \\" >> $TMP/tempscript
   echo "\"---\" \"(done adding partitions, continue with setup)\" \\" >> $TMP/tempscript
   echo "2> $TMP/return" >> $TMP/tempscript
}

# ask_format( dev ) - Asks the user if he/she wants to format the named device
ask_format() {
   dialog --backtitle "Do you want to format Linux partition ${1}?" \
   --title "FORMAT PARTITION $1" --menu "If this partition has \
not been formatted, you should format it. NOTE: This will erase all data on \
it. Would you like \
to format this partition?" 12 70 3 \
   "Format" "Quick format with no bad block checking" \
   "Check" "Slow format that checks for bad blocks" \
   "No" "No, do not format this partition" 2> $TMP/return
   if [ ! $? = 0 ]; then
     rm -f $TMP/return
     exit
   fi
}

# ask_fs( dev ) - Asks the user the type of filesystem to use for the named
#                 device.  Answer in $TMP/return
ask_fs() {
  unset BTRFS EXT2 EXT3 JFS REISERFS XFS
  if grep -wq ext2 /proc/filesystems 1> $NDIR 2> $NDIR ; then
    EXT2="Ext2 is the traditional Linux file system and is fast and stable. "
  fi
  if grep -wq ext3 /proc/filesystems 1> $NDIR 2> $NDIR ; then
    EXT3="Ext3 is the journaling version of the Ext2 filesystem. "
    DEFAULT=ext3
  fi
  if grep -wq ext4 /proc/filesystems 1> $NDIR 2> $NDIR ; then
    EXT4="Ext4 is the successor to the ext3 filesystem. "
    DEFAULT=ext4
  fi
  if grep -wq reiserfs /proc/filesystems 1> $NDIR 2> $NDIR ; then
    REISERFS="ReiserFS is a journaling filesystem that stores all files and filenames in a balanced tree structure. "
  fi
  if grep -wq btrfs /proc/filesystems 1> $NDIR 2> $NDIR ; then
    BTRFS="Btrfs is a B-tree copy-on-write filesystem. "
  fi
  # These last two will only be present if the user asked for a special kernel.
  # They should probably be the default in that case.
  if grep -wq jfs /proc/filesystems 1> $NDIR 2> $NDIR ; then
    JFS="JFS is IBM's Journaled Filesystem, currently used in IBM enterprise servers. "
  fi
  if grep -wq xfs /proc/filesystems 1> $NDIR 2> $NDIR ; then
    XFS="XFS is SGI's journaling filesystem that originated on IRIX. "
  fi
  cat << EOF > $TMP/tempscript
dialog --title "SELECT FILESYSTEM FOR $1" \\
--backtitle "Partition $1 will be formatted." \\
--default-item $DEFAULT --menu \\
"Please select the type of filesystem to use for the specified \\
device. Here are descriptions of the available filesystems: $EXT2 $EXT3 $EXT4 $JFS $REISERFS $XFS" \\
0 0 0 \\
EOF
  if [ ! "$EXT2" = "" ]; then
    echo "\"ext2\" \"Standard Linux Ext2 Filesystem\" \\" >> $TMP/tempscript
  fi
  if [ ! "$EXT3" = "" ]; then
    echo "\"ext3\" \"Ext3 Journaling Filesystem\" \\" >> $TMP/tempscript
  fi
  if [ ! "$EXT4" = "" ]; then
    echo "\"ext4\" \"Ext4 Journaling Filesystem\" \\" >> $TMP/tempscript
  fi
  if [ ! "$JFS" = "" ]; then
    echo "\"jfs\" \"IBM's Journaled Filesystem\" \\" >> $TMP/tempscript
  fi
  if [ ! "$REISERFS" = "" ]; then
    echo "\"reiserfs\" \"ReiserFS Journaling Filesystem\" \\" >> $TMP/tempscript
  fi
  if [ ! "$BTRFS" = "" ]; then
    echo "\"btrfs\" \"Btrfs Copy-on-Write B-tree Filesystem\" \\" >> $TMP/tempscript
  fi
  if [ ! "$XFS" = "" ]; then
    echo "\"xfs\" \"SGI's Journaling Filesystem\" \\" >> $TMP/tempscript
  fi
  echo "2> $TMP/return" >> $TMP/tempscript
  . $TMP/tempscript
  if [ ! $? = 0 ]; then
    rm -f $TMP/return
    exit
  fi
}

# get_part_size( dev ) - Return the size in K, M, G, T, or P of the named partition.
get_part_size() {
  numfmt --to=iec $(blockdev --getsize64 $1)
}

# MAIN

if [ ! -d $TMP ]; then
   mkdir -p $TMP
fi

if [ ! -r $TMP/SeTplist ]; then
   # Give warning?
   exit
fi

cat /dev/null >> $TMP/SeTnative

cat << EOF > $TMP/tempscript
dialog --backtitle "Setting up root Linux partition." \\
--title "Select Linux installation partition:" --ok-label Select --cancel-label Continue --menu \\
"Please select a partition from the following list to use for your \\
root (/) Linux partition." 13 70 5 \\
EOF
gen_part_list

. $TMP/tempscript
if [ ! $? = 0 ]; then
   rm $TMP/tempscript
   exit 255 # user abort
fi

ROOT_DEVICE="`cat $TMP/return`"
rm $TMP/tempscript
if [ "$ROOT_DEVICE" = "---" ]; then
   exit 255
fi

# format root partition?
ask_format $ROOT_DEVICE
DOFORMAT="`cat $TMP/return`"
rm -f $TMP/return
if [ ! "$DOFORMAT" = "No" ]; then
  ask_fs $ROOT_DEVICE
  ROOT_SYS_TYPE="`cat $TMP/return`"
  rm -f $TMP/return
  # create the filesystem
  if [ "$ROOT_SYS_TYPE" = "ext2" ]; then
    if [ "$DOFORMAT" = "Check" ]; then
      make_ext2 $ROOT_DEVICE "y"
    else
      make_ext2 $ROOT_DEVICE "n"
    fi
  elif [ "$ROOT_SYS_TYPE" = "ext3" ]; then
    if [ "$DOFORMAT" = "Check" ]; then
      make_ext3 $ROOT_DEVICE "y"
    else
      make_ext3 $ROOT_DEVICE "n"
    fi
  elif [ "$ROOT_SYS_TYPE" = "ext4" ]; then
    if [ "$DOFORMAT" = "Check" ]; then
      make_ext4 $ROOT_DEVICE "y"
    else
      make_ext4 $ROOT_DEVICE "n"
    fi
  elif [ "$ROOT_SYS_TYPE" = "reiserfs" ]; then
    make_reiserfs $ROOT_DEVICE
  elif [ "$ROOT_SYS_TYPE" = "btrfs" ]; then
    make_btrfs $ROOT_DEVICE
  elif [ "$ROOT_SYS_TYPE" = "jfs" ]; then
    if [ "$DOFORMAT" = "Check" ]; then
      make_jfs $ROOT_DEVICE "y"
    else
      make_jfs $ROOT_DEVICE "n"
    fi
  elif [ "$ROOT_SYS_TYPE" = "xfs" ]; then
    make_xfs $ROOT_DEVICE
  fi
fi # DOFORMAT?

# Sync before identifying and mounting the root device:
sync

# Determine the filesystem type using blkid:
ROOT_SYS_TYPE=$(blkid -s TYPE $ROOT_DEVICE | cut -f 2 -d = | tr -d \")

# Mount the root filesystem:
mount $ROOT_DEVICE $T_PX -t $ROOT_SYS_TYPE 1> $REDIR 2> $REDIR

#echo "$ROOT_DEVICE       /        $ROOT_SYS_TYPE        defaults   1   1" > $TMP/SeTnative
printf "%-16s %-16s %-11s %-16s %-3s %s\n" "$ROOT_DEVICE" "/" "$ROOT_SYS_TYPE" "defaults" "1" "1" > $TMP/SeTnative
echo $ROOT_DEVICE > $TMP/SeTrootdev

# done mounting the target root partition

# More than one Linux partition
if [ ! "`cat $TMP/SeTplist | sed -n '2 p'`" = "" ]; then
   while [ 0 ]; do # next partition loop
      # OK, we will set this flag, and if we find an unused partition, we
      # change it. If it doesn't get switched, we skip the next menu.
      rm -f $TMP/SeTSKIP
      echo "true" > $TMP/SeTSKIP

      cat << EOF > $TMP/tempscript
      dialog --backtitle "Setting up other Linux partitions." \\
--title "Select other Linux partitions for /etc/fstab" \\
--ok-label Select --cancel-label Continue \\
--menu "You seem to have more than one partition tagged as type Linux. \\
You may use these to distribute your Linux system across more than \\
one partition. Currently, you have $ROOT_DEVICE mounted as your / partition. \\
You might want to mount directories such as /home or /usr/local \\
on separate partitions. You should not try to mount /etc, /sbin, or /bin on \\
their own partitions since they contain utilities needed to bring the system \\
up and mount partitions. Also, do not reuse a partition that you've already \\
entered before. Please select one of the Linux partitions listed below, or \\
if you're done, hit <Continue>." 20 70 4 \\
EOF
      gen_part_list

      if [ "`cat $TMP/SeTSKIP`" = "true" ]; then
         break;
      fi
      rm -rf $TMP/return

      . $TMP/tempscript
      if [ ! $? = 0 ]; then
         break;
      fi

      NEXT_PARTITION=`cat $TMP/return`
      if [ "$NEXT_PARTITION" = "---" ]; then
         break;
      elif [ "$NEXT_PARTITION" = "(IN USE)" ]; then
         continue;
      fi

      # We now have the next partition, ask the user what to do with it:
      ask_format $NEXT_PARTITION

      DOFORMAT="`cat $TMP/return`"
      rm -f $TMP/return

      BACKT="Partition $NEXT_PARTITION will not be reformatted."
      if [ ! "$DOFORMAT" = "No" ]; then
        ask_fs $NEXT_PARTITION
        NEXT_SYS_TYPE="`cat $TMP/return`"
        rm -f $TMP/return
        BACKT="Partition $NEXT_PARTITION will be formatted with $NEXT_SYS_TYPE."
        # create the filesystem
        if [ "$NEXT_SYS_TYPE" = "ext2" ]; then
          if [ "$DOFORMAT" = "Check" ]; then
            make_ext2 $NEXT_PARTITION "y"
          else
            make_ext2 $NEXT_PARTITION "n"
          fi
        elif [ "$NEXT_SYS_TYPE" = "ext3" ]; then
          if [ "$DOFORMAT" = "Check" ]; then
            make_ext3 $NEXT_PARTITION "y"
          else
            make_ext3 $NEXT_PARTITION "n"
          fi
        elif [ "$NEXT_SYS_TYPE" = "ext4" ]; then
          if [ "$DOFORMAT" = "Check" ]; then
            make_ext4 $NEXT_PARTITION "y"
          else
            make_ext4 $NEXT_PARTITION "n"
          fi
        elif [ "$NEXT_SYS_TYPE" = "reiserfs" ]; then
          make_reiserfs $NEXT_PARTITION
        elif [ "$NEXT_SYS_TYPE" = "btrfs" ]; then
          make_btrfs $NEXT_PARTITION
        elif [ "$NEXT_SYS_TYPE" = "jfs" ]; then
          if [ "$DOFORMAT" = "Check" ]; then
            make_jfs $NEXT_PARTITION "y"
          else
            make_jfs $NEXT_PARTITION "n"
          fi
        elif [ "$NEXT_SYS_TYPE" = "xfs" ]; then
          make_xfs $NEXT_PARTITION
        fi
      fi # DOFORMAT?

      # Now ask the user where to mount this new filesystem:
      dialog --backtitle "$BACKT" --title \
"SELECT MOUNT POINT FOR $NEXT_PARTITION" --inputbox \
"OK, now you need to specify where you want the new partition mounted. \
For example, if you want to put it under /usr/local, then respond: /usr/local\n\
Where would you like to mount $NEXT_PARTITION?" 11 59 2> $TMP/return
      if [ ! $? = 0 ]; then
         continue
      fi

      MTPT=`cat $TMP/return`
      if [ "$MTPT" = "" ]; then # abort if blank
         continue
      fi
      if [ "`echo "$MTPT" | cut -b1`" = " " ]; then # bail if 1st char is space
         continue
      fi
      if [ ! "`echo "$MTPT" | cut -b1`" = "/" ]; then # add / to start of path
         MTPT="/$MTPT"
      fi
      rm $TMP/return

      # Sync before identifying and mounting the partition:
      sync
      
      # Create the mount point if it does not exist:
      if [ ! -d ${T_PX}/$MTPT ]; then
         mkdir -p ${T_PX}/$MTPT
      fi

      # Determine the filesystem type using blkid:
      NEXT_SYS_TYPE=$(blkid -s TYPE $NEXT_PARTITION | cut -f 2 -d = | tr -d \")

      # Mount the partition:
      mount $NEXT_PARTITION ${T_PX}/$MTPT -t $NEXT_SYS_TYPE 1> $REDIR 2> $REDIR

      #echo "$NEXT_PARTITION       $MTPT      $NEXT_SYS_TYPE        defaults   1   1" >> $TMP/SeTnative
      printf "%-16s %-16s %-11s %-16s %-3s %s\n" "$NEXT_PARTITION" "$MTPT" "$NEXT_SYS_TYPE" "defaults" "1" "2" >> $TMP/SeTnative
   done # next partition loop
fi # more than one Linux partition

# Done, report to the user:
cat << EOF > $TMP/tempmsg

Adding this information to your /etc/fstab:

EOF
cat $TMP/SeTnative >> $TMP/tempmsg
dialog --backtitle "Finished setting up Linux partitions." \
--title "DONE ADDING LINUX PARTITIONS TO /etc/fstab" \
--exit-label OK \
--textbox $TMP/tempmsg 15 72

## More obsolete code from the floppy disk era:
## Now, move our /tmp storage onto the target partition if possible:
#/usr/lib/setup/migrate.sh