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/* $Id: sbuf.h $ */
/** @file
* NAT - sbuf declarations/defines.
*/
/*
* Copyright (C) 2006-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
/*
* This code is based on:
*
* Copyright (c) 1995 Danny Gasparovski.
*
* Please read the file COPYRIGHT for the
* terms and conditions of the copyright.
*/
#ifndef _SBUF_H_
#define _SBUF_H_
# define sbflush(sb) sbdrop((sb),(sb)->sb_cc)
# define sbspace(sb) ((sb)->sb_datalen - (sb)->sb_cc)
# define SBUF_LEN(sb) ((sb)->sb_cc)
# define SBUF_SIZE(sb) ((sb)->sb_datalen)
struct sbuf
{
u_int sb_cc; /* actual chars in buffer */
u_int sb_datalen; /* Length of data */
char *sb_wptr; /* write pointer. points to where the next
* bytes should be written in the sbuf */
char *sb_rptr; /* read pointer. points to where the next
* byte should be read from the sbuf */
char *sb_data; /* Actual data */
};
void sbfree (struct sbuf *);
void sbdrop (struct sbuf *, int);
void sbreserve (PNATState, struct sbuf *, int);
void sbappend (PNATState, struct socket *, struct mbuf *);
void sbappendsb (PNATState, struct sbuf *, struct mbuf *);
void sbcopy (struct sbuf *, int, int, char *);
#endif
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