-int guestfs_set_event_callback (guestfs_h *g,
- guestfs_event_callback cb,
- uint64_t event_bitmask,
- int flags,
- void *opaque);
+extern int guestfs_set_event_callback (guestfs_h *g,
+ guestfs_event_callback cb,
+ uint64_t event_bitmask,
+ int flags,
+ void *opaque);