From c63f340d90800895f007de64b7d2d14624263331 Mon Sep 17 00:00:00 2001
From: nthnluu <nate1299@me.com>
Date: Sun, 28 Jan 2024 21:20:27 -0500
Subject: Created student weenix repository

---
 kernel/include/util/printf.h | 87 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 kernel/include/util/printf.h

(limited to 'kernel/include/util/printf.h')

diff --git a/kernel/include/util/printf.h b/kernel/include/util/printf.h
new file mode 100644
index 0000000..430b156
--- /dev/null
+++ b/kernel/include/util/printf.h
@@ -0,0 +1,87 @@
+/* -*-  Mode:C; c-basic-offset:4; tab-width:4 -*-
+ ****************************************************************************
+ * (C) 2003 - Rolf Neugebauer - Intel Research Cambridge
+ ****************************************************************************
+ *
+ *        File: lib.h
+ *      Author: Rolf Neugebauer (neugebar@dcs.gla.ac.uk)
+ *     Changes:
+ *
+ *        Date: Aug 2003
+ *
+ * Environment: Xen Minimal OS
+ * Description: Random useful library functions, contains some freebsd stuff
+ *
+ ****************************************************************************
+ * $Id: h-insert.h,v 1.4 2002/11/08 16:03:55 rn Exp $
+ ****************************************************************************
+ *
+ *-
+ * Copyright (c) 1991, 1993
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by the University of
+ *      California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+ *
+ *      @(#)stdarg.h    8.1 (Berkeley) 6/10/93
+ * $FreeBSD: src/sys/i386/include/stdarg.h,v 1.10 1999/08/28 00:44:26 peter Exp
+ *$
+ */
+
+#pragma once
+
+#include "stdarg.h"
+#include <types.h>
+
+/* printing */
+int vsnprintf(char *buf, size_t size, const char *fmt, va_list args);
+
+int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);
+
+int snprintf(char *buf, size_t size, const char *fmt, ...);
+
+int scnprintf(char *buf, size_t size, const char *fmt, ...);
+
+// a pretty simple way to avoid kernel buffer overflow attacks, no?
+// int vsprintf(char *buf, const char *fmt, va_list args);
+// int sprintf(char *buf, const char *fmt, ...);
+
+/* A variation on printf designed to be used in debug info functions.
+ * The function takes in a pointer to the address of a string buffer
+ * and a pointer to the size of the buffer. The buffer address pointed
+ * by str is incremented to point to the null character writen at the
+ * end of the new string. The size is decremented by the number of
+ * characters writen, not including the null character. The function
+ * returns the number of characters left in the buffer (after taking
+ * in to account the null character). */
+int iprintf(char **str, size_t *size, char *fmt, ...)
+    __attribute__((format(printf, 3, 4)));
+
+int vsscanf(const char *buf, const char *fmt, va_list args);
+
+int sscanf(const char *buf, const char *fmt, ...);
-- 
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