volume_id: provide a custom debug function

[elogind.git] / extras / volume_id / libvolume_id / libvolume_id.h

diff --git a/extras/volume_id/libvolume_id/libvolume_id.h b/extras/volume_id/libvolume_id/libvolume_id.h
index b08a650dc80ac051de8cb0eff5275e76648dc147..7faf8d8af3d20e05140ea2e987fecc7188c6178e 100644 (file)
--- a/extras/volume_id/libvolume_id/libvolume_id.h
+++ b/extras/volume_id/libvolume_id/libvolume_id.h
@@ -18,6 +18,12 @@
 #define PACKED                         __attribute__((packed))
 #endif
 
+
+typedef void (*volume_id_log_fn)(int priority, const char *file, int line, const char *format, ...)
+            __attribute__ ((format(printf, 4, 5)));
+
+extern volume_id_log_fn volume_id_log;
+
 #define VOLUME_ID_LABEL_SIZE           64
 #define VOLUME_ID_UUID_SIZE            36
 #define VOLUME_ID_FORMAT_SIZE          32