mini-os: Add printf format checking to xenbus_printf

Reported-by: "Daniel P. Berrange" <berrange@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>

diff --git a/include/xenbus.h b/include/xenbus.h
index b3865929501121c666d55d3b722021bcee0528d9..e8de09f282cd27023f3d9825778956613a5afbc2 100644 (file)
--- a/include/xenbus.h
+++ b/include/xenbus.h
@@ -88,7 +88,8 @@ int xenbus_read_integer(const char *path);
 /* Contraction of snprintf and xenbus_write(path/node). */
 char* xenbus_printf(xenbus_transaction_t xbt,
                                   const char* node, const char* path,
-                                  const char* fmt, ...);
+                                  const char* fmt, ...)
+                   __attribute__((__format__(printf, 4, 5)));
 
 /* Reset the XenBus system. */
 void fini_xenbus(void);