feat(image): make /var stateful

image/mkimage.sh

@@ -13,11 +13,28 @@ find rootfs/ -type d -exec chmod 755 {} \;
 mkdir rootfs/usr/lib/systemd/system/basic.target.wants
 ln -sf basic.target rootfs/usr/lib/systemd/system/default.target
 
+# mount patos state
+cat <<EOF > rootfs/usr/lib/systemd/system/var.mount
+[Unit]
+Description=Mount for /var
+Before=local-fs.target
+
+[Mount]
+What=/dev/disk/by-label/patos-state
+Where=/var
+Type=ext2
+Options=defaults
+
+[Install]
+WantedBy=basic.target
+EOF
+ln -sf ../var.mount rootfs/usr/lib/systemd/system/basic.target.wants/var.mount
+
 # enable dbus
 ln -sf ../dbus.service rootfs/usr/lib/systemd/system/basic.target.wants/dbus.service
 ln -sf ../dbus.socket rootfs/usr/lib/systemd/system/sockets.target.wants/dbus.socket
 
-# generate machine-id
+# generate a temporary machine id
 $systemd/usr/bin/systemd-machine-id-setup --root=rootfs/
 
 cat <<EOF > rootfs/etc/passwd

rootfs/mkrootfs.sh

@@ -1,7 +1,7 @@
 set -ex -o pipefail
 
 mkdir -p $out
-mkdir -p $out/etc $out/dev $out/proc $out/sys $out/tmp $out/root $out/run $out/boot
+mkdir -p $out/etc/repart.d $out/dev $out/proc $out/sys $out/tmp $out/root $out/run $out/boot
 ln -sf ../usr/bin $out/bin
 ln -sf ../usr/bin $out/sbin
 ln -sf ../usr/lib $out/lib
@@ -27,6 +27,31 @@ VERSION_CODENAME=pre-alpha
 VERSION_ID="0.0.1"
 EOF
 
+sed -i 's#After=\(.*\)#After=sysroot.mount \1#' $out/usr/lib/systemd/system/systemd-repart.service
+cat <<EOF > $out/etc/repart.d/10-esp.conf
+[Partition]
+Type=esp
+Format=vfat
+EOF
+
+cat <<EOF > $out/etc/repart.d/22-root.conf
+[Partition]
+Type=root
+EOF
+
+#FIXME: use btrfs instead on ext2(busybox) but need the btrfs tools in rootfs.
+cat <<EOF > $out/etc/repart.d/40-var.conf
+[Partition]
+Type=var
+UUID=4d21b016-b534-45c2-a9fb-5c16e091fd2d
+Format=ext2
+Label=patos-state
+Minimize=off
+FactoryReset=yes
+SizeMinBytes=1G
+SplitName=-
+EOF
+
 ### install PatOS glibc
 cp -P $glibcPatos/lib/*.so* $out/usr/lib/