src/bach/build.bach/tools/mklfs/mklfs.sh

#!/bin/bash

SCRIPT=$(readlink -f "$0")
SCRIPTDIR=$(dirname "$SCRIPT")
MKLFS=$SCRIPTDIR/mklfs

# parameters
INPUT=$1
OUTPUT=$2
INLINE_SIZE=$3
PAGE_SIZE=$4
BLK_SIZE=$5
CYCLE_SIZE=$6

# config limitation size, 80MB
LIMIT_SIZE=`expr 80 \* 1024 \* 1024`

nr_dir=`find $INPUT -type d | wc -l`
nr_file_s_1k=`find $INPUT -type f -size -${INLINE_SIZE}c | wc -l`
nr_file_b_1k_s_blk=`find $INPUT -type f -size +${INLINE_SIZE}c -size -${BLK_SIZE}c | wc -l`
nr_file_b_blk=`find $INPUT -type f -size +${BLK_SIZE}c | wc -l`

# 2 blocks per dir
est_nr_blk=`expr "$nr_dir" \* 2`
#est_nr_blk=`expr "$nr_dir" + 2`
# other files
est_nr_blk=`expr "$est_nr_blk" + "$nr_file_b_1k_s_blk" + "$nr_file_b_blk"`
est_img_size=`expr "$est_nr_blk" \* "$BLK_SIZE"` 
nr_iter=1

echo "MKLFS: $MKLFS"
echo "DIR #: $nr_dir"
echo "FILE # (0 ~ ${INLINE_SIZE}): $nr_file_s_1k"
echo "FILE # (${INLINE_SIZE} ~ ${BLK_SIZE}): $nr_file_b_1k_s_blk"
echo "FILE # (> ${BLK_SIZE}): $nr_file_b_blk"
echo "Estimated block #: $est_nr_blk"
echo "Estimated image size: $est_img_size B"
echo "Limited size: $LIMIT_SIZE B"

# do iterations
while [ "true" ]; do
    echo "iter $nr_iter: mklfs -c $INPUT -y $CYCLE_SIZE -b $BLK_SIZE -r $PAGE_SIZE -p $PAGE_SIZE -s $est_img_size -i $OUTPUT"
    # size check
    if [ "$est_img_size" -gt "$LIMIT_SIZE" ]; then
        echo "Sorry... image exceeded the limit size $est_img_size > $LIMIT_SIZE B"
        # error return
        exit 1
    fi

    rm -f $OUTPUT
    tmp=`$MKLFS -c $INPUT -y 512 -b $BLK_SIZE -r $PAGE_SIZE -p $PAGE_SIZE -s $est_img_size -i $OUTPUT 2>/dev/null`
    nofree=`echo "$tmp" | grep "No more free space"`
    #echo "tmp: $tmp"
    #echo "nofree: $nofree"
    if [ "$nofree" != "" ]; then
        #echo "no free space"
        # add 1 block per step
        est_img_size=`expr $est_img_size + $BLK_SIZE`
    else
        # okay... all is done
        break
    fi
    nr_iter=`expr $nr_iter + 1`
done

#est_img_size=`expr $est_img_size / 1024`
echo "Final image size: ${est_img_size}B, # iter: $nr_iter"