ipsec-tools/racoon/vmbuf.c

   1 /*      $KAME: vmbuf.c,v 1.11 2001/11/26 16:54:29 sakane 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 #include "config.h"
  33
  34 #define NONEED_DRM
  35
  36 #include <sys/types.h>
  37 #include <sys/param.h>
  38
  39 #include <stdlib.h>
  40 #include <stdio.h>
  41 #include <string.h>
  42
  43 #include "var.h"
  44 #include "misc.h"
  45 #include "vmbuf.h"
  46 #include "debug.h"
  47 #include "gcmalloc.h"
  48
  49 vchar_t *
  50 vmalloc(size)
  51         size_t size;
  52 {
  53         vchar_t *var;
  54
  55         if ((var = (vchar_t *)racoon_malloc(sizeof(*var))) == NULL)
  56                 return NULL;
  57
  58         var->l = size;
  59         if (size == 0) {
  60                 var->v = NULL;
  61         } else {
  62                 var->v = (caddr_t)racoon_calloc(1, size);
  63                 if (var->v == NULL) {
  64                         (void)racoon_free(var);
  65                         return NULL;
  66                 }
  67         }
  68
  69         return var;
  70 }
  71
  72 vchar_t *
  73 vrealloc(ptr, size)
  74         vchar_t *ptr;
  75         size_t size;
  76 {
  77         caddr_t v;
  78
  79         if (ptr != NULL) {
  80                 if (ptr->l == 0) {
  81                         (void)vfree(ptr);
  82                         return vmalloc(size); /* zero-fill it? */
  83                 }
  84
  85                 if ((v = (caddr_t)racoon_realloc(ptr->v, size)) == NULL) {
  86                         (void)vfree(ptr);
  87                         return NULL;
  88                 }
  89
  90                 if ( size > ptr->l)
  91                         memset(v + ptr->l, 0, size - ptr->l);
  92                 ptr->v = v;
  93                 ptr->l = size;
  94         } else {
  95                 if ((ptr = vmalloc(size)) == NULL)
  96                         return NULL;
  97         }
  98
  99         return ptr;
 100 }
 101
 102 void
 103 vfree(var)
 104         vchar_t *var;
 105 {
 106         if (var == NULL)
 107                 return;
 108
 109         if (var->v)
 110                 (void)racoon_free(var->v);
 111
 112         (void)racoon_free(var);
 113
 114         return;
 115 }
 116
 117 vchar_t *
 118 vdup(src)
 119         vchar_t *src;
 120 {
 121         vchar_t *new;
 122
 123         if ((new = vmalloc(src->l)) == NULL)
 124                 return NULL;
 125
 126         memcpy(new->v, src->v, src->l);
 127
 128         return new;
 129 }