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ipsec-tools

    1: /*	$NetBSD: vmbuf.c,v 1.4 2006/09/09 16:22:10 manu Exp $	*/
    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: }