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-rw-r--r--package/skeleton-systemd/skeleton-systemd.mk50
1 files changed, 48 insertions, 2 deletions
diff --git a/package/skeleton-systemd/skeleton-systemd.mk b/package/skeleton-systemd/skeleton-systemd.mk
index 384715e1c9..860ebea2cd 100644
--- a/package/skeleton-systemd/skeleton-systemd.mk
+++ b/package/skeleton-systemd/skeleton-systemd.mk
@@ -15,11 +15,57 @@ SKELETON_SYSTEMD_DEPENDENCIES = skeleton-common
SKELETON_SYSTEMD_PROVIDES = skeleton
+ifeq ($(BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW),y)
+
+define SKELETON_SYSTEMD_ROOT_RO_OR_RW
+ echo "/dev/root / auto rw 0 1" >$(TARGET_DIR)/etc/fstab
+ mkdir -p $(TARGET_DIR)/var
+endef
+
+else
+
+# On a R/O rootfs, /var is a tmpfs filesystem. So, at build time, we
+# redirect /var to the "factory settings" location. Just before the
+# filesystem gets created, the /var symlink will be replaced with
+# a real (but empty) directory, and the "factory files" will be copied
+# back there by the tmpfiles.d mechanism.
+define SKELETON_SYSTEMD_ROOT_RO_OR_RW
+ mkdir -p $(TARGET_DIR)/etc/systemd/tmpfiles.d
+ mkdir -p $(TARGET_DIR)/usr/share/factory/var
+ ln -s usr/share/factory/var $(TARGET_DIR)/var
+ echo "/dev/root / auto ro 0 1" >$(TARGET_DIR)/etc/fstab
+ echo "tmpfs /var tmpfs mode=1777 0 0" >>$(TARGET_DIR)/etc/fstab
+endef
+
+define SKELETON_SYSTEMD_PRE_ROOTFS_VAR
+ rm -f $(TARGET_DIR)/var
+ mkdir $(TARGET_DIR)/var
+ for i in $(TARGET_DIR)/usr/share/factory/var/*; do \
+ j="$${i#$(TARGET_DIR)/usr/share/factory}"; \
+ if [ -L "$${i}" ]; then \
+ printf "L+! %s - - - - %s\n" \
+ "$${j}" "../usr/share/factory/$${j}" \
+ || exit 1; \
+ else \
+ printf "C! %s - - - -\n" "$${j}" \
+ || exit 1; \
+ fi; \
+ done >$(TARGET_DIR)/etc/tmpfiles.d/var-factory.conf
+endef
+SKELETON_SYSTEMD_ROOTFS_PRE_CMD_HOOKS += SKELETON_SYSTEMD_PRE_ROOTFS_VAR
+
+define SKELETON_SYSTEMD_POST_ROOTFS_VAR
+ rm -rf $(TARGET_DIR)/var
+ ln -s usr/share/factory/var $(TARGET_DIR)/var
+endef
+SKELETON_SYSTEMD_ROOTFS_POST_CMD_HOOKS += SKELETON_SYSTEMD_POST_ROOTFS_VAR
+
+endif
+
define SKELETON_SYSTEMD_INSTALL_TARGET_CMDS
mkdir -p $(TARGET_DIR)/home
mkdir -p $(TARGET_DIR)/srv
- mkdir -p $(TARGET_DIR)/var
- echo "/dev/root / auto rw 0 1" >$(TARGET_DIR)/etc/fstab
+ $(SKELETON_SYSTEMD_ROOT_RO_OR_RW)
endef
$(eval $(generic-package))