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