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 } 138
