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