3 files changed, 20 insertions, 0 deletions
diff --git a/libudev/libudev-device-private.c b/libudev/libudev-device-private.c
index 6d72d328bd..ee9e297cea 100644
--- a/libudev/libudev-device-private.c
+++ b/libudev/libudev-device-private.c
@@ -134,6 +134,13 @@ int udev_device_update_db(struct udev_device *udev_device)
 		return -1;
 	}
 
+	/*
+	 * set 'sticky' bit to indicate that we should not clean the
+	 * database when we transition from initramfs to the real root
+	 */
+	if (udev_device_get_db_persist(udev_device))
+		fchmod(fileno(f), 01644);
+
 	if (has_info) {
 		size_t devlen = strlen(udev_get_dev_path(udev))+1;
 		struct udev_list_entry *list_entry;
diff --git a/libudev/libudev-device.c b/libudev/libudev-device.c
index ccd4a70677..a141dadf0a 100644
--- a/libudev/libudev-device.c
+++ b/libudev/libudev-device.c
@@ -89,6 +89,7 @@ struct udev_device {
 	bool uevent_loaded;
 	bool is_initialized;
 	bool sysattr_list_read;
+	bool db_persist;
 };
 
 struct udev_list_entry *udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value)
@@ -1774,3 +1775,13 @@ int udev_device_set_ifindex(struct udev_device *udev_device, int ifindex)
 	udev_device_add_property(udev_device, "IFINDEX", num);
 	return 0;
 }
+
+bool udev_device_get_db_persist(struct udev_device *udev_device)
+{
+	return udev_device->db_persist;
+}
+
+void udev_device_set_db_persist(struct udev_device *udev_device)
+{
+	udev_device->db_persist = true;
+}
diff --git a/libudev/libudev-private.h b/libudev/libudev-private.h
index f6137b5dc7..c57a89873c 100644
--- a/libudev/libudev-private.h
+++ b/libudev/libudev-private.h
@@ -109,6 +109,8 @@ int udev_device_set_watch_handle(struct udev_device *udev_device, int handle);
 int udev_device_get_ifindex(struct udev_device *udev_device);
 int udev_device_set_ifindex(struct udev_device *udev_device, int ifindex);
 void udev_device_set_info_loaded(struct udev_device *device);
+bool udev_device_get_db_persist(struct udev_device *udev_device);
+void udev_device_set_db_persist(struct udev_device *udev_device);
 
 /* libudev-device-private.c */
 int udev_device_update_db(struct udev_device *udev_device);