qemu-kbuild-test

#!/bin/bash

mem="768M"

[ "$3" -eq 1 ] && args='-zlz4hc,12'
if [ "$3" -eq 2 ]; then
	blks=$((RANDOM % 255 + 2))
	echo "EROFS pclusterblks=$blks"
	args="-zlz4hc,12 -C$((blks*4096)) --random-pclusterblks"
	mem="1G"
	[ $blks -gt 171 ] && mem="1280M"
fi
if [ "$3" -eq 3 ]; then
	chunksize=$((4096 << (RANDOM % 11)))
	echo "EROFS chunksize=$chunksize (blockmap)"
	args="--chunksize $chunksize -Eforce-inode-blockmap"
fi
if [ "$3" -eq 4 ]; then
	chunksize=$((4096 << (RANDOM % 11)))
	echo "EROFS chunksize=$chunksize (chunkindexes)"
	args="--chunksize $chunksize -Eforce-chunk-indexes"
fi
[ "$3" -eq 5 ] && args='-zzstd'
if [ "$3" -eq 6 ]; then
	blks=$((RANDOM % 255 + 2))
	echo "EROFS pclusterblks=$blks"
	args="-zzstd -C$((blks*4096)) --random-pclusterblks"
	mem="1G"
	[ $blks -gt 171 ] && mem="1280M"
fi
curl https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.140.tar.gz | tar -zx
bin/mkfs.erofs $args linux.erofs.img linux-5.4.140 && rm -rf linux-5.4.140
bin/fsck.erofs linux.erofs.img || exit 1
fallocate -l 11g overlay.ext4.img && mkfs.ext2 -q overlay.ext4.img
sync
qemu-system-x86_64 -nographic -serial mon:stdio -m $mem -smp 4 \
	--accel tcg,thread=multi -kernel $1 \
	-drive file=$2,index=0,readonly,media=cdrom \
	-hdb linux.erofs.img -hdc overlay.ext4.img \
	-net nic,model=e1000 -net user \
	-append "net.ifnames=0 root=/dev/sr0 console=ttyS0"

mkdir mnt && sudo mount -o loop overlay.ext4.img mnt && \
	{ [ -f mnt/exitstatus ] && [ "x`cat mnt/exitstatus`" = "x0" ]; }