udev/libudev: event - move {OLD_,}INTERFACE handling from udevd to libudev

This should be internal to the library as it is only about reflecting the sysfs state in the udev_device.

Signed-off-by: Anthony G. Basile <blueness@gentoo.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/libudev/libudev-device.c b/src/libudev/libudev-device.c
index 9863901a33..9f1787b395 100644
--- a/src/libudev/libudev-device.c
+++ b/src/libudev/libudev-device.c
@@ -1926,6 +1926,7 @@ void udev_device_set_db_persist(struct udev_device *udev_device)
 int udev_device_rename(struct udev_device *udev_device, const char *name)
 {
         _cleanup_free_ char *dirname = NULL;
+        const char *interface;
         char *new_syspath;
         int r;
 
@@ -1942,6 +1943,13 @@ int udev_device_rename(struct udev_device *udev_device, const char *name)
         if (r < 0)
                 return r;
 
+        interface = udev_device_get_property_value(udev_device, "INTERFACE");
+        if (interface) {
+                /* like DEVPATH_OLD, INTERFACE_OLD is not saved to the db, but only stays around for the current event */
+                udev_device_add_property(udev_device, "INTERFACE_OLD", interface);
+                udev_device_add_property(udev_device, "INTERFACE", name);
+        }
+
         return 0;
 }