Index: uspace/lib/c/include/stdio.h
===================================================================
--- uspace/lib/c/include/stdio.h	(revision 63f89665fc0283c1661274dc636d5a66e03d48b4)
+++ uspace/lib/c/include/stdio.h	(revision 20235a356988dff15276fd66d391230fc9b32591)
@@ -171,4 +171,5 @@
 extern off64_t ftell(FILE *);
 extern int feof(FILE *);
+extern int fileno(FILE *);
 
 extern int fflush(FILE *);