/* $KAME: vmbuf.h,v 1.7 2000/10/04 17:41:05 itojun Exp $ */ /* * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. * 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. Neither the name of the project 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 PROJECT 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 PROJECT 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. */ /* * bp v * v v * ........................ * <--------------> l * <----------------------> bl */ typedef struct _vchar_t_ { #if notyet u_int32_t t; /* type of the value */ vchar_t *n; /* next vchar_t buffer */ size_t bl; /* length of the buffer */ caddr_t bp; /* pointer to the buffer */ #endif size_t l; /* length of the value */ caddr_t v; /* place holder to the pointer to the value */ } vchar_t; #define VPTRINIT(p) \ do { \ if (p) { \ vfree(p); \ (p) = NULL; \ } \ } while(0); #define vfree vmbuf_free extern vchar_t *vmalloc __P((size_t)); extern vchar_t *vrealloc __P((vchar_t *, size_t)); extern void vfree __P((vchar_t *)); extern vchar_t *vdup __P((vchar_t *));