1 files changed, 45 insertions, 0 deletions
diff --git a/libc/stdio/_rfill.c b/libc/stdio/_rfill.c
new file mode 100644
index 000000000..145c1d78e
--- /dev/null
+++ b/libc/stdio/_rfill.c
@@ -0,0 +1,45 @@
+/* Copyright (C) 2004       Manuel Novoa III    <mjn3@codepoet.org>
+ *
+ * GNU Library General Public License (LGPL) version 2 or later.
+ *
+ * Dedicated to Toni.  See uClibc/DEDICATION.mjn3 for details.
+ */
+
+#include "_stdio.h"
+
+#ifdef __UCLIBC_MJN3_ONLY__
+#warning CONSIDER: Do we really need a seperate rfill function?
+#endif
+
+#ifdef __STDIO_BUFFERS
+
+/* Read some data into the buffer.
+ * Returns number of bytes read into the buffer.
+ * If 0 is returned, then either EOF or ERROR.
+ * Side effects are those of _stdio_READ.
+ */
+
+size_t __stdio_rfill(register FILE *__restrict stream)
+{
+	size_t rv;
+
+	__STDIO_STREAM_VALIDATE(stream);
+	assert(stream->__filedes >= -1);
+	assert(__STDIO_STREAM_IS_READING(stream));
+	assert(!__STDIO_STREAM_BUFFER_RAVAIL(stream)); /* Buffer must be empty. */
+	assert(__STDIO_STREAM_BUFFER_SIZE(stream));	/* Must have a buffer. */
+	assert(!(stream->__modeflags & __FLAG_UNGOT));
+#ifdef __UCLIBC_HAS_STDIO_GETC_MACRO__
+	assert(stream->__bufgetc_u == stream->__bufstart);
+#endif
+
+	rv = __stdio_READ(stream, stream->__bufstart,
+					  stream->__bufend - stream->__bufstart);
+	stream->__bufpos = stream->__bufstart;
+	stream->__bufread = stream->__bufstart + rv;
+
+	__STDIO_STREAM_VALIDATE(stream);
+	return rv;
+}
+
+#endif