erofsfuse-kbuild-test

#!/bin/bash

[ "$1" -eq 1 ] && args='-zlz4hc,12'
if [ "$1" -eq 2 ]; then
	blks=$((RANDOM % 255 + 2))
	echo "EROFS pclusterblks=$blks"
	args="-zlz4hc,12 -C$((blks*4096)) --random-pclusterblks"
fi
if [ "$1" -eq 3 ]; then
	chunksize=$((4096 << (RANDOM % 11)))
	echo "EROFS chunksize=$chunksize (blockmap)"
	args="--chunksize $chunksize -Eforce-inode-blockmap"
fi
if [ "$1" -eq 4 ]; then
	chunksize=$((4096 << (RANDOM % 11)))
	echo "EROFS chunksize=$chunksize (chunkindexes)"
	args="--chunksize $chunksize -Eforce-chunk-indexes"
fi
[ "$1" -eq 5 ] && args='-zdeflate,9'
if [ "$1" -eq 6 ]; then
	blks=$((RANDOM % 255 + 2))
	echo "EROFS DEFLATE pclusterblks=$blks"
	args="-zdeflate,9 -C$((blks*4096)) --random-pclusterblks"
fi

extractDir=""

case "$2" in
    *.tar.gz )
        args="$args --gzip --tar=f"
        extractDir="${2%%.tar.gz}/"
        ;;
    *.tgz )
        args="$args --gzip --tar=f"
        extractDir="${2%%.tgz}/"
        ;;
    *.tar )
        args="$args --tar=f"
        extractDir="${2%%.tar}/"
        ;;
esac

bin/mkfs.erofs --force-uid="$(id -u)" --force-gid="$(id -g)" $args lowerdir.erofs.img $2 && rm -rf $2
bin/fsck.erofs lowerdir.erofs.img || exit 1
mkdir {lower,upper,work}dir linux
bin/erofsfuse lowerdir.erofs.img lowerdir
fuse-overlayfs -olowerdir=lowerdir,upperdir=upperdir,workdir=workdir linux
cd linux/$extractDir && make defconfig && make -j24 && make mrproper && cd -
fusermount -u linux && fusermount -u lowerdir