tinyramfs/test/bare.test

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#!/bin/sh
. ../lib/common.sh
cleanup()
{
umount "${tmpdir}/root" || :
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qemu-nbd -d "$nbd" || :
rm -rf "$tmpdir"
}
set -ef
trap cleanup EXIT INT
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nbd=${NBD:-/dev/nbd1}
devmgr=${DEVMGR:-proc}
arch=${ARCH:-$(uname -m)}
kernel=${KERNEL:-$(uname -r)}
vmlinuz=${VMLINUZ:-"/boot/vmlinuz-${kernel}"}
mkdir -p "${tmpdir:=${TMPDIR:-/tmp}/${0##*/}.$$}"
root="${tmpdir}/root"
config="${tmpdir}/config"
image="${tmpdir}/root.qcow2"
initrd="${tmpdir}/initramfs-$(uname -r)"
qemu-img create -f qcow2 "$image" 1G
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qemu-nbd -c "$nbd" "$image"
sleep 1
# o: Create MBR table.
# n: Add new partition to table.
# p: Primary partition.
# 1: Partition number.
# newline: Use default value for first sector.
# newline: Use default value for last sector.
# w: Write changes and re-read partition table.
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fdisk "$nbd" << EOF
o
n
p
1
w
EOF
cat > "$config" << EOF
hooks=$devmgr
root=LABEL=root
EOF
mkdir -p "$root"
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mkfs.ext4 -L root "${nbd}p1"
mount "${nbd}p1" "$root"
(
tmpdir=$root; cd "$tmpdir"
mkdir -p \
dev sys tmp run proc \
root usr/lib usr/bin
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ln -s lib usr/lib64
ln -s usr/lib lib64
ln -s usr/lib lib
ln -s usr/bin bin
ln -s usr/bin sbin
ln -s bin usr/sbin
copy_exec sh
copy_exec e2label
cat > sbin/init << EOF
#!/bin/sh
exec e2label /dev/disk/by-label/root success
EOF
chmod +x sbin/init
)
umount "$root"
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qemu-nbd -d "$nbd"
(cd .. && ./tinyramfs -lk "$kernel" -c "$config" "$initrd")
set -- \
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-m 1G \
-no-reboot \
-initrd "$initrd" \
-kernel "$vmlinuz" \
-device virtio-scsi \
-drive file="$image",if=virtio
if [ -c /dev/kvm ]; then
set -- -enable-kvm -cpu host "$@"
fi
if [ "$DEBUG" ]; then
set -- -append 'panic=-1 rdpanic debug rddebug console=ttyS0' -nographic "$@"
else
set -- -append 'panic=-1 rdpanic' -display none "$@"
fi
"qemu-system-${arch}" "$@"
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qemu-nbd -c "$nbd" "$image"
sleep 1
# Re-read partition table.
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fdisk "$nbd" << EOF
w
EOF
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[ "$(e2label "${nbd}p1")" = success ]