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#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
46vchar_t *
47vmalloc(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
65vchar_t *
66vrealloc(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
88void
89vfree(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
103vchar_t *
104vdup(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}
116