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Annotation of embedaddon/ipsec-tools/src/racoon/vmbuf.c, revision 1.1.1.1

1.1       misho       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: }