# SPDX-License-Identifier: EUPL-1.2+
# SPDX-FileCopyrightText: 2021-2022 Alyssa Ross <hi@alyssa.is>
# qemu-kvm is non-standard, but is present in at least Fedora and
# Nixpkgs. If you don't have qemu-kvm, you'll need to set e.g.
# QEMU_KVM = qemu-system-x86_64 -enable-kvm.
QEMU_KVM = qemu-kvm
CLOUD_HYPERVISOR = cloud-hypervisor
VMM = qemu
HOST_FILES = host/data/appvm-lynx/providers/net/netvm
HOST_BUILD_FILES = \
build/host/data/appvm-lynx/blk/root.img \
build/host/data/appvm-lynx/vmlinux
# We produce a directory, but that doesn't play nice with Make,
# because it won't know to update if some file in the directory is
# changed, or a file is created or removed in a subdirectory. Using
# the whole directory could also end up including files that aren't
# intended to be part of the input, like temporary editor files or
# .license files. So for all these reasons, only explicitly listed
# files are included in the build result.
build/svc: $(HOST_FILES) $(HOST_BUILD_FILES)
rm -rf $@
mkdir -p $@
tar -c $(HOST_FILES) | tar -C $@ -x --strip-components 1
tar -c $(HOST_BUILD_FILES) | tar -C $@ -x --strip-components 2
build/host/data/appvm-lynx/vmlinux: $(VMLINUX)
mkdir -p $$(dirname $@)
cp $(VMLINUX) $@
# tar2ext4 will leave half a filesystem behind if it's interrupted
# half way through.
build/host/data/appvm-lynx/blk/root.img: build/rootfs.tar
mkdir -p $$(dirname $@)
tar2ext4 -i build/rootfs.tar -o $@.tmp
mv $@.tmp $@
VM_FILES = \
etc/fstab \
etc/init \
etc/mdev.conf \
etc/mdev/iface \
etc/passwd \
etc/resolv.conf \
etc/s6-linux-init/scripts/rc.init
VM_DIRS = dev run proc sys \
etc/s6-linux-init/env \
etc/s6-linux-init/run-image/service
# These are separate because they need to be included, but putting
# them as make dependencies would confuse make.
VM_LINKS = bin etc/ssl/certs/ca-certificates.crt
VM_BUILD_FILES = build/etc/s6-rc
build/empty:
mkdir -p $@
build/rootfs.tar: build/empty $(PACKAGES_TAR) $(VM_FILES) $(VM_BUILD_FILES)
cp --no-preserve=mode -f $(PACKAGES_TAR) $@
tar $(TARFLAGS) --append -f $@ $(VM_FILES) $(VM_LINKS)
echo $(VM_BUILD_FILES) | cut -d/ -f2 | \
tar $(TARFLAGS) --append -f $@ -C build -T -
for m in $(VM_DIRS); do \
tar $(TARFLAGS) --append -hf $@ --xform="s,.*,$$m," build/empty ; \
done
VM_S6_RC_FILES = \
etc/s6-rc/lynx/run \
etc/s6-rc/lynx/type \
etc/s6-rc/mdevd-coldplug/dependencies \
etc/s6-rc/mdevd-coldplug/type \
etc/s6-rc/mdevd-coldplug/up \
etc/s6-rc/mdevd/notification-fd \
etc/s6-rc/mdevd/run \
etc/s6-rc/mdevd/type \
etc/s6-rc/ok-all/contents \
etc/s6-rc/ok-all/type
build/etc/s6-rc: $(VM_S6_RC_FILES)
mkdir -p $$(dirname $@)
rm -rf $@
dir=$$(mktemp -d) && \
tar -c $(VM_S6_RC_FILES) | tar -C $$dir -x --strip-components 2 && \
s6-rc-compile $@ $$dir; \
exit=$$?; rm -r $$dir; exit $$exit
run-qemu: build/host/data/appvm-lynx/blk/root.img
$(QEMU_KVM) -m 128 -cpu host -machine q35,kernel=$(KERNEL) -vga none \
-drive file=build/host/data/appvm-lynx/blk/root.img,if=virtio,format=raw,readonly=on \
-append "console=ttyS0 root=/dev/vda" \
-netdev user,id=net0 \
-device virtio-net,netdev=net0,mac=0A:B3:EC:00:00:00 \
-chardev vc,id=virtiocon0 \
-device virtio-serial-pci \
-device virtconsole,chardev=virtiocon0
.PHONY: run-qemu
run-cloud-hypervisor: build/host/data/appvm-lynx/blk/root.img
$(CLOUD_HYPERVISOR) \
--api-socket path=vmm.sock \
--memory size=128M \
--disk path=build/host/data/appvm-lynx/blk/root.img,readonly=on \
--net tap=tap0,mac=0A:B3:EC:00:00:00 \
--kernel $(KERNEL) \
--cmdline "console=ttyS0 root=/dev/vda" \
--console tty \
--serial pty
.PHONY: run-cloud-hypervisor
run: run-$(VMM)
.PHONY: run
clean:
rm -rf build
.PHONY: clean