external/bsd/tcpdump/dist/cpack.h

   1 /*-
   2  * Copyright (c) 2003, 2004 David Young.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY DAVID YOUNG ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  16  * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL DAVID
  17  * YOUNG BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
  19  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  21  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  22  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  24  * OF SUCH DAMAGE.
  25  */
  26
  27 #ifndef _CPACK_H
  28 #define _CPACK_H
  29
  30 struct cpack_state {
  31         uint8_t                                 *c_buf;
  32         uint8_t                                 *c_next;
  33         size_t                                           c_len;
  34 };
  35
  36 int cpack_init(struct cpack_state *, uint8_t *, size_t);
  37
  38 int cpack_uint8(struct cpack_state *, uint8_t *);
  39 int cpack_uint16(struct cpack_state *, uint16_t *);
  40 int cpack_uint32(struct cpack_state *, uint32_t *);
  41 int cpack_uint64(struct cpack_state *, uint64_t *);
  42
  43 uint8_t *cpack_next_boundary(uint8_t *buf, uint8_t *p, size_t alignment);
  44 uint8_t *cpack_align_and_reserve(struct cpack_state *cs, size_t wordsize);
  45
  46 #define cpack_int8(__s, __p)    cpack_uint8((__s),  (uint8_t*)(__p))
  47 #define cpack_int16(__s, __p)   cpack_uint16((__s), (uint16_t*)(__p))
  48 #define cpack_int32(__s, __p)   cpack_uint32((__s), (uint32_t*)(__p))
  49 #define cpack_int64(__s, __p)   cpack_uint64((__s), (uint64_t*)(__p))
  50
  51 extern int cpack_advance(struct cpack_state *, const size_t);
  52
  53 #endif /* _CPACK_H */