4 files changed, 68 insertions, 0 deletions
diff --git a/poky/meta/files/overlayfs-all-overlays.service.in b/poky/meta/files/overlayfs-all-overlays.service.in
new file mode 100644
index 0000000000..74ee4e90ae
--- /dev/null
+++ b/poky/meta/files/overlayfs-all-overlays.service.in
@@ -0,0 +1,12 @@
+[Unit]
+Description=Groups all overlays required by {PN} in one unit
+After={ALL_OVERLAYFS_UNITS}
+Requires={ALL_OVERLAYFS_UNITS}
+
+[Service]
+Type=oneshot
+ExecStart=/bin/true
+RemainAfterExit=true
+
+[Install]
+WantedBy=local-fs.target
diff --git a/poky/meta/files/overlayfs-create-dirs.service.in b/poky/meta/files/overlayfs-create-dirs.service.in
new file mode 100644
index 0000000000..17204145f2
--- /dev/null
+++ b/poky/meta/files/overlayfs-create-dirs.service.in
@@ -0,0 +1,14 @@
+[Unit]
+Description=Overlayfs directories setup
+Requires={DATA_MOUNT_UNIT}
+After={DATA_MOUNT_UNIT}
+DefaultDependencies=no
+
+[Service]
+Type=oneshot
+ExecStart=mkdir -p {DATA_MOUNT_POINT}/workdir{LOWERDIR} && mkdir -p {DATA_MOUNT_POINT}/upper{LOWERDIR}
+RemainAfterExit=true
+StandardOutput=journal
+
+[Install]
+WantedBy=multi-user.target
diff --git a/poky/meta/files/overlayfs-etc-preinit.sh.in b/poky/meta/files/overlayfs-etc-preinit.sh.in
new file mode 100644
index 0000000000..2ebb6c9224
--- /dev/null
+++ b/poky/meta/files/overlayfs-etc-preinit.sh.in
@@ -0,0 +1,29 @@
+#!/bin/sh
+
+echo "PREINIT: Start"
+
+PATH=/sbin:/bin:/usr/sbin:/usr/bin
+mount -o remount,rw /
+
+mkdir -p /proc
+mkdir -p /sys
+mkdir -p /run
+mkdir -p /var/run
+
+mount -t proc proc /proc
+mount -t sysfs sysfs /sys
+
+[ -z "$CONSOLE" ] && CONSOLE="/dev/console"
+
+mkdir -p {OVERLAYFS_ETC_MOUNT_POINT}
+if mount -n -t {OVERLAYFS_ETC_FSTYPE} -o {OVERLAYFS_ETC_MOUNT_OPTIONS} {OVERLAYFS_ETC_DEVICE} {OVERLAYFS_ETC_MOUNT_POINT}
+then
+    mkdir -p {OVERLAYFS_ETC_MOUNT_POINT}/overlay-etc/upper
+    mkdir -p {OVERLAYFS_ETC_MOUNT_POINT}/overlay-etc/work
+    mount -n -t overlay -o upperdir={OVERLAYFS_ETC_MOUNT_POINT}/overlay-etc/upper,lowerdir=/etc,workdir={OVERLAYFS_ETC_MOUNT_POINT}/overlay-etc/work {OVERLAYFS_ETC_MOUNT_POINT}/overlay-etc/upper /etc || echo "PREINIT: Mounting etc-overlay failed!"
+else
+    echo "PREINIT: Mounting </data> failed!"
+fi
+
+echo "PREINIT: done; starting </sbin/init>"
+exec {SBIN_INIT_NAME}
diff --git a/poky/meta/files/overlayfs-unit.mount.in b/poky/meta/files/overlayfs-unit.mount.in
new file mode 100644
index 0000000000..1d33b7e39c
--- /dev/null
+++ b/poky/meta/files/overlayfs-unit.mount.in
@@ -0,0 +1,13 @@
+[Unit]
+Description=Overlayfs mount unit
+Requires={CREATE_DIRS_SERVICE}
+After={CREATE_DIRS_SERVICE}
+
+[Mount]
+What=overlay
+Where={LOWERDIR}
+Type=overlay
+Options=lowerdir={LOWERDIR},upperdir={DATA_MOUNT_POINT}/upper{LOWERDIR},workdir={DATA_MOUNT_POINT}/workdir{LOWERDIR}
+
+[Install]
+WantedBy=multi-user.target