crypto/dist/ipsec-tools/src/racoon/vmbuf.c

   1 /*      $NetBSD$        */
   2
   3 /*      $KAME: vmbuf.c,v 1.11 2001/11/26 16:54:29 sakane Exp $  */
   4
   5 /*
   6  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. Neither the name of the project nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "config.h"
  35
  36 #define NONEED_DRM
  37
  38 #include <sys/types.h>
  39 #include <sys/param.h>
  40
  41 #include <stdlib.h>
  42 #include <stdio.h>
  43 #include <string.h>
  44
  45 #include "var.h"
  46 #include "misc.h"
  47 #include "vmbuf.h"
  48 #include "debug.h"
  49 #include "plog.h"
  50 #include "gcmalloc.h"
  51
  52 vchar_t *
  53 vmalloc(size)
  54         size_t size;
  55 {
  56         vchar_t *var;
  57
  58         if ((var = (vchar_t *)racoon_malloc(sizeof(*var))) == NULL)
  59                 return NULL;
  60
  61         var->l = size;
  62         if (size == 0) {
  63                 var->v = NULL;
  64         } else {
  65                 var->v = (caddr_t)racoon_calloc(1, size);
  66                 if (var->v == NULL) {
  67                         (void)racoon_free(var);
  68                         return NULL;
  69                 }
  70         }
  71
  72         return var;
  73 }
  74
  75 vchar_t *
  76 vrealloc(ptr, size)
  77         vchar_t *ptr;
  78         size_t size;
  79 {
  80         caddr_t v;
  81
  82         if (ptr != NULL) {
  83                 if (ptr->l == 0) {
  84                         (void)vfree(ptr);
  85                         return vmalloc(size); /* zero-fill it? */
  86                 }
  87
  88                 if ((v = (caddr_t)racoon_realloc(ptr->v, size)) == NULL) {
  89                         (void)vfree(ptr);
  90                         return NULL;
  91                 }
  92
  93                 if ( size > ptr->l)
  94                         memset(v + ptr->l, 0, size - ptr->l);
  95                 ptr->v = v;
  96                 ptr->l = size;
  97         } else {
  98                 if ((ptr = vmalloc(size)) == NULL)
  99                         return NULL;
 100         }
 101
 102         return ptr;
 103 }
 104
 105 void
 106 vfree(var)
 107         vchar_t *var;
 108 {
 109         if (var == NULL)
 110                 return;
 111
 112         if (var->v)
 113                 (void)racoon_free(var->v);
 114
 115         (void)racoon_free(var);
 116
 117         return;
 118 }
 119
 120 vchar_t *
 121 vdup(src)
 122         vchar_t *src;
 123 {
 124         vchar_t *new;
 125
 126         if (src == NULL) {
 127                 plog(LLV_ERROR, LOCATION, NULL, "vdup(NULL) called\n");
 128                 return NULL;
 129         }
 130
 131         if ((new = vmalloc(src->l)) == NULL)
 132                 return NULL;
 133
 134         memcpy(new->v, src->v, src->l);
 135
 136         return new;
 137 }