overlayfs: move templates to files directory

(From OE-Core rev: b08ce6d23f2c6c89073ddff90b758360f9ce9fea)

Signed-off-by: Vyacheslav Yurkov <uvv.mail@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/overlayfs.bbclass

@@ -37,51 +37,19 @@ REQUIRED_DISTRO_FEATURES += "systemd overlayfs"
 
 inherit systemd features_check
 
+OVERLAYFS_CREATE_DIRS_TEMPLATE ??= "${COREBASE}/meta/files/overlayfs-create-dirs.service.in"
+OVERLAYFS_MOUNT_UNIT_TEMPLATE ??= "${COREBASE}/meta/files/overlayfs-unit.mount.in"
+OVERLAYFS_ALL_OVERLAYS_TEMPLATE ??= "${COREBASE}/meta/files/overlayfs-all-overlays.service.in"
+
 python do_create_overlayfs_units() {
     from oe.overlayfs import mountUnitName
 
-    CreateDirsUnitTemplate = """[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
-"""
-    MountUnitTemplate = """[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
-"""
-    AllOverlaysTemplate = """[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
-"""
+    with open(d.getVar("OVERLAYFS_CREATE_DIRS_TEMPLATE"), "r") as f:
+        CreateDirsUnitTemplate = f.read()
+    with open(d.getVar("OVERLAYFS_MOUNT_UNIT_TEMPLATE"), "r") as f:
+        MountUnitTemplate = f.read()
+    with open(d.getVar("OVERLAYFS_ALL_OVERLAYS_TEMPLATE"), "r") as f:
+        AllOverlaysTemplate = f.read()
 
     def prepareUnits(data, lower):
         from oe.overlayfs import helperUnitName

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

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

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