Improvements to the systemd unit file

Makefile

@@ -19,7 +19,7 @@ qemu-wrapper:
 
 .PHONY: vm
 vm:
-	GOOS=linux CGO_ENABLED=0 go build $(LDFLAGS) -o bin/vm ./cmd/vm
+	GOOS=linux CGO_ENABLED=0 go build $(LDFLAGS) -o bin/gvforwarder ./cmd/vm
 
 # win-sshproxy is compiled as a windows GUI to support backgrounding
 .PHONY: win-sshproxy

README.md

@@ -94,7 +94,7 @@ With a container:
 
 With the executable:
 ```
-(vm) # ./vm -debug
+(vm) # ./gvforwarder -debug
 ```
 
 ## Services

contrib/systemd/gv-user-network@.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=gvisor-tap-vsock Network Traffic Forwarder
+After=NetworkManager.service
+BindsTo=sys-devices-virtual-net-%i.device
+After=sys-devices-virtual-net-%i.device
+
+[Service]
+Environment=GV_VSOCK_PORT="1024"
+EnvironmentFile=-/etc/sysconfig/gv-user-network
+ExecStart=/usr/libexec/podman/gvforwarder -preexisting -iface %i -url vsock://2:${GV_VSOCK_PORT}/connect
+
+[Install]
+WantedBy=multi-user.target

gvisor-tap-vsock.spec.rpkg

@@ -30,6 +30,7 @@ Source: {{{ git_dir_pack }}}
 BuildRequires: gcc
 BuildRequires: golang >= 1.16.6
 BuildRequires: git-core
+BuildRequires: systemd-rpm-macros
 %if 0%{?fedora} || 0%{?rhel} >= 9
 BuildRequires: go-rpm-macros
 %endif
@@ -71,17 +72,29 @@ ln -s vendor src
 
 export GOPATH=$(pwd)/_build:$(pwd)
 %gobuild -o bin/gvproxy ./cmd/gvproxy
-%gobuild -o bin/vm ./cmd/vm
+%gobuild -o bin/gvforwarder ./cmd/vm
 
 %install
 install -dp %{buildroot}%{_libexecdir}/podman
 install -p -m0755 bin/gvproxy %{buildroot}%{_libexecdir}/podman
-install -p -m0755 bin/vm %{buildroot}%{_libexecdir}/podman
+install -p -m0755 bin/gvforwarder %{buildroot}%{_libexecdir}/podman
+install -dp %{buildroot}%{_unitdir}
+install -p -m0644 contrib/systemd/gv-user-network@.service %{buildroot}%{_unitdir}
+
+%post
+%systemd_post gv-user-network@.service
+
+%preun
+%systemd_preun gv-user-network@.service
+
+%postun
+%systemd_postun_with_restart gv-user-network@.service
 
 %files
 %dir %{_libexecdir}/podman
 %{_libexecdir}/podman/gvproxy
-%{_libexecdir}/podman/vm
+%{_libexecdir}/podman/gvforwarder
+%{_unitdir}/gv-user-network@.service
 
 %changelog
 {{{ git_dir_changelog }}}

images/Dockerfile

@@ -6,5 +6,5 @@ RUN make
 FROM busybox
 COPY images/udhcpc.sh /usr/share/udhcpc/default.script
 RUN chmod +x /usr/share/udhcpc/default.script
-COPY --from=build /opt/app-root/src/bin/vm .
-ENTRYPOINT ["/vm"]
+COPY --from=build /opt/app-root/src/bin/gvforwarder .
+ENTRYPOINT ["/gvforwarder"]

test/wsl.sh

@@ -2,7 +2,7 @@
 
 set -x
 
-./bin/vm \
+./bin/gvforwarder \
     -url="stdio:$(pwd)/bin/gvproxy-windows.exe?listen-stdio=accept&debug=true" \
     -iface="eth1" \
     -stop-if-exist="" \