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 *
vmalloc(size)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 *
vrealloc(ptr,size)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
vfree(var)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 *
vdup(src)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 }
138