Index: uspace/lib/libc/generic/io/fprintf.c
===================================================================
--- uspace/lib/libc/generic/io/fprintf.c	(revision d8c0dc5c56feb7c2c4b29519ae89e52176d3d065)
+++ uspace/lib/libc/generic/io/fprintf.c	(revision d8c0dc5c56feb7c2c4b29519ae89e52176d3d065)
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2008 Jiri Svoboda
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libc
+ * @{
+ */
+/**
+ * @file
+ * @brief fprintf, vfprintf
+ */ 
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <io/printf_core.h>
+
+static int vfprintf_write(const char *s, size_t count, void *f)
+{
+	return fwrite(s, 1, count, (FILE *) f);
+}
+
+int vfprintf(FILE *f, const char *fmt, va_list ap)
+{
+	struct printf_spec ps = {
+		(int (*)(void *, size_t, void *)) vfprintf_write,
+		(void *) f
+	};
+
+	return printf_core(fmt, &ps, ap);
+}
+
+int fprintf(FILE *f, const char *fmt, ...)
+{
+	int rv;
+	va_list args;
+
+	va_start(args, fmt);
+	rv = vfprintf(f, fmt, args);
+	va_end(args);
+
+	return rv;
+}
+
+/** @}
+ */
Index: uspace/lib/libc/generic/io/stdio.c
===================================================================
--- uspace/lib/libc/generic/io/stdio.c	(revision 63088cc191f35da85cac7fde793d96d9c3a51615)
+++ uspace/lib/libc/generic/io/stdio.c	(revision d8c0dc5c56feb7c2c4b29519ae89e52176d3d065)
@@ -43,4 +43,6 @@
 #include <bool.h>
 #include <stdio.h>
+
+FILE *stdin, *stdout, *stderr;
 
 /**