sd-device: introduce device_clear_sysattr_cache()

2 files changed, 5 insertions, 0 deletions

diff --git a/src/libsystemd/sd-device/device-private.h b/src/libsystemd/sd-device/device-private.h
index 93c1d20a01..3d670a3afc 100644
--- a/src/libsystemd/sd-device/device-private.h
+++ b/src/libsystemd/sd-device/device-private.h
@@ -26,6 +26,7 @@ int device_get_devnode_mode(sd_device *device, mode_t *ret);
 int device_get_devnode_uid(sd_device *device, uid_t *ret);
 int device_get_devnode_gid(sd_device *device, gid_t *ret);
 
+void device_clear_sysattr_cache(sd_device *device);
 int device_cache_sysattr_value(sd_device *device, const char *key, char *value);
 int device_get_cached_sysattr_value(sd_device *device, const char *key, const char **ret_value);
 
diff --git a/src/libsystemd/sd-device/sd-device.c b/src/libsystemd/sd-device/sd-device.c
index 6c034626e7..3e31beb1f2 100644
--- a/src/libsystemd/sd-device/sd-device.c
+++ b/src/libsystemd/sd-device/sd-device.c
@@ -2044,6 +2044,10 @@ _public_ int sd_device_get_trigger_uuid(sd_device *device, sd_id128_t *ret) {
         return 0;
 }
 
+void device_clear_sysattr_cache(sd_device *device) {
+        device->sysattr_values = hashmap_free(device->sysattr_values);
+}
+
 int device_cache_sysattr_value(sd_device *device, const char *key, char *value) {
         _unused_ _cleanup_free_ char *old_value = NULL;
         _cleanup_free_ char *new_key = NULL;