#!/bin/sh

# load needed modules
modprobe nandsim first_id_byte=0x2c second_id_byte=0xa1 third_id_byte=0x80 fourth_id_byte=0x15 parts=128
modprobe mtdblock

# generate some arbitrary data
dd if=/dev/urandom of=rnd bs=2048 count=64

# clean and mount simulated NAND partition
flash_erase /dev/mtd0 0 0
mkdir -p mnt_jffs2
mount -t jffs2 /dev/mtdblock0 mnt_jffs2

# set up a critical node structure
cd mnt_jffs2
mkdir tmpdir
cp ../rnd DELETE1
cp ../rnd DELETE2
cp ../rnd KEEP1
mkdir tmpdir/subdir
cp ../rnd KEEP2
cp ../rnd DELETE3
mv tmpdir/subdir .
rmdir tmpdir
cp ../rnd DELETE4
rm DELETE*
# and excercise the garbage collector
cp ../rnd DELETE1
cp ../rnd DELETE2
cp ../rnd DELETE3
cp ../rnd DELETE4
cp ../rnd DELETE5
cp ../rnd DELETE6
cp ../rnd DELETE7
cp ../rnd DELETE8
cp ../rnd DELETE9
cp ../rnd DELETE1
cp ../rnd DELETE2
cp ../rnd DELETE3
cp ../rnd DELETE4
cp ../rnd DELETE5
cp ../rnd DELETE6
cp ../rnd DELETE7
cp ../rnd DELETE8
cp ../rnd DELETE9
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
cp ../rnd DELETE
rm DELETE*
cd ..

# unmount and remount partition. Notice how ls barfs after remount, but not before.
ls -l mnt_jffs2
umount mnt_jffs2
mount -t jffs2 /dev/mtdblock0 mnt_jffs2
ls -l mnt_jffs2

# unmount again for next run
umount mnt_jffs2