reactos/base/services/dhcp/alloc.c

   1 /*      $OpenBSD: alloc.c,v 1.9 2004/05/04 20:28:40 deraadt Exp $       */
   2
   3 /* Memory allocation... */
   4
   5 /*
   6  * Copyright (c) 1995, 1996, 1998 The Internet Software Consortium.
   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  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of The Internet Software Consortium nor the names
  19  *    of its contributors may be used to endorse or promote products derived
  20  *    from this software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
  23  * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  24  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  26  * DISCLAIMED.  IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
  27  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  28  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  29  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  30  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  31  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  32  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  33  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  * This software has been written for the Internet Software Consortium
  37  * by Ted Lemon <mellon@fugue.com> in cooperation with Vixie
  38  * Enterprises.  To learn more about the Internet Software Consortium,
  39  * see ``http://www.vix.com/isc''.  To learn more about Vixie
  40  * Enterprises, see ``http://www.vix.com''.
  41  */
  42
  43 #include "rosdhcp.h"
  44 #include "dhcpd.h"
  45
  46 struct string_list *
  47 new_string_list(size_t size)
  48 {
  49         struct string_list *rval;
  50
  51         rval = calloc(1, sizeof(struct string_list) + size);
  52         if (rval != NULL)
  53                 rval->string = ((char *)rval) + sizeof(struct string_list);
  54         return (rval);
  55 }
  56
  57 struct hash_table *
  58 new_hash_table(int count)
  59 {
  60         struct hash_table *rval;
  61
  62         rval = calloc(1, sizeof(struct hash_table) -
  63             (DEFAULT_HASH_SIZE * sizeof(struct hash_bucket *)) +
  64             (count * sizeof(struct hash_bucket *)));
  65         if (rval == NULL)
  66                 return (NULL);
  67         rval->hash_count = count;
  68         return (rval);
  69 }
  70
  71 struct hash_bucket *
  72 new_hash_bucket(void)
  73 {
  74         struct hash_bucket *rval = calloc(1, sizeof(struct hash_bucket));
  75
  76         return (rval);
  77 }
  78
  79 void
  80 dfree(void *ptr, char *name)
  81 {
  82         if (!ptr) {
  83                 warning("dfree %s: free on null pointer.", name);
  84                 return;
  85         }
  86         free(ptr);
  87 }
  88
  89 void
  90 free_hash_bucket(struct hash_bucket *ptr, char *name)
  91 {
  92         dfree(ptr, name);
  93 }