racoon.tproj/vmbuf.c

   1 /*      $KAME: vmbuf.c,v 1.10 2001/04/03 15:51:57 thorpej Exp $ */
   2
   3 /*
   4  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the project nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #define NONEED_DRM
  33 #include <sys/types.h>
  34 #include <sys/param.h>
  35
  36 #include <stdlib.h>
  37 #include <stdio.h>
  38 #include <string.h>
  39
  40 #include "var.h"
  41 #include "misc.h"
  42 #include "vmbuf.h"
  43 #include "debug.h"
  44 #include "gcmalloc.h"
  45
  46 vchar_t *
  47 vmalloc(size)
  48         size_t size;
  49 {
  50         vchar_t *var;
  51
  52         if ((var = (vchar_t *)racoon_malloc(sizeof(*var))) == NULL)
  53                 return NULL;
  54
  55         var->l = size;
  56         var->v = (caddr_t)racoon_calloc(1, size);
  57         if (var->v == NULL) {
  58                 (void)racoon_free(var);
  59                 return NULL;
  60         }
  61
  62         return var;
  63 }
  64
  65 vchar_t *
  66 vrealloc(ptr, size)
  67         vchar_t *ptr;
  68         size_t size;
  69 {
  70         caddr_t v;
  71
  72         if (ptr != NULL) {
  73                 if ((v = (caddr_t)racoon_realloc(ptr->v, size)) == NULL) {
  74                         (void)vfree(ptr);
  75                         return NULL;
  76                 }
  77                 memset(v + ptr->l, 0, size - ptr->l);
  78                 ptr->v = v;
  79                 ptr->l = size;
  80         } else {
  81                 if ((ptr = vmalloc(size)) == NULL)
  82                         return NULL;
  83         }
  84
  85         return ptr;
  86 }
  87
  88 void
  89 vfree(var)
  90         vchar_t *var;
  91 {
  92         if (var == NULL)
  93                 return;
  94
  95         if (var->v)
  96                 (void)racoon_free(var->v);
  97
  98         (void)racoon_free(var);
  99
 100         return;
 101 }
 102
 103 vchar_t *
 104 vdup(src)
 105         vchar_t *src;
 106 {
 107         vchar_t *new;
 108
 109         if ((new = vmalloc(src->l)) == NULL)
 110                 return NULL;
 111
 112         memcpy(new->v, src->v, src->l);
 113
 114         return new;
 115 }