| 1 | /* $Id: sbuf.h 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * NAT - sbuf declarations/defines.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * SPDX-License-Identifier: GPL-3.0-only
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| 26 | */
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| 27 |
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| 28 | /*
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| 29 | * This code is based on:
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| 30 | *
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| 31 | * Copyright (c) 1995 Danny Gasparovski.
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| 32 | *
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| 33 | * Please read the file COPYRIGHT for the
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| 34 | * terms and conditions of the copyright.
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| 35 | */
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| 36 |
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| 37 | #ifndef _SBUF_H_
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| 38 | #define _SBUF_H_
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| 39 |
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| 40 | # define sbflush(sb) sbdrop((sb),(sb)->sb_cc)
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| 41 | # define sbspace(sb) ((sb)->sb_datalen - (sb)->sb_cc)
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| 42 | # define SBUF_LEN(sb) ((sb)->sb_cc)
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| 43 | # define SBUF_SIZE(sb) ((sb)->sb_datalen)
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| 44 |
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| 45 |
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| 46 | struct sbuf
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| 47 | {
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| 48 | u_int sb_cc; /* actual chars in buffer */
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| 49 | u_int sb_datalen; /* Length of data */
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| 50 | char *sb_wptr; /* write pointer. points to where the next
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| 51 | * bytes should be written in the sbuf */
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| 52 | char *sb_rptr; /* read pointer. points to where the next
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| 53 | * byte should be read from the sbuf */
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| 54 | char *sb_data; /* Actual data */
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| 55 | };
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| 56 |
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| 57 | void sbfree (struct sbuf *);
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| 58 | void sbdrop (struct sbuf *, int);
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| 59 | void sbreserve (PNATState, struct sbuf *, int);
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| 60 | void sbappend (PNATState, struct socket *, struct mbuf *);
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| 61 | void sbappendsb (PNATState, struct sbuf *, struct mbuf *);
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| 62 | void sbcopy (struct sbuf *, int, int, char *);
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| 63 | #endif
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