contrib/bind-9.2.4rc7/lib/dns/include/dns/rdatalist.h

   1 /*
   2  * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1999-2001  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: rdatalist.h,v 1.13.2.1 2004/03/09 06:11:20 marka Exp $ */
  19
  20 #ifndef DNS_RDATALIST_H
  21 #define DNS_RDATALIST_H 1
  22
  23 /*****
  24  ***** Module Info
  25  *****/
  26
  27 /*
  28  * DNS Rdatalist
  29  *
  30  * A DNS rdatalist is a list of rdata of a common type and class.
  31  *
  32  * MP:
  33  *      Clients of this module must impose any required synchronization.
  34  *
  35  * Reliability:
  36  *      No anticipated impact.
  37  *
  38  * Resources:
  39  *      <TBS>
  40  *
  41  * Security:
  42  *      No anticipated impact.
  43  *
  44  * Standards:
  45  *      None.
  46  */
  47
  48 #include <isc/lang.h>
  49
  50 #include <dns/types.h>
  51
  52 /*
  53  * Clients may use this type directly.
  54  */
  55 struct dns_rdatalist {
  56         dns_rdataclass_t                rdclass;
  57         dns_rdatatype_t                 type;
  58         dns_rdatatype_t                 covers;
  59         dns_ttl_t                       ttl;
  60         ISC_LIST(dns_rdata_t)           rdata;
  61         ISC_LINK(dns_rdatalist_t)       link;
  62 };
  63
  64 ISC_LANG_BEGINDECLS
  65
  66 void
  67 dns_rdatalist_init(dns_rdatalist_t *rdatalist);
  68 /*
  69  * Initialize rdatalist.
  70  *
  71  * Ensures:
  72  *      All fields of rdatalist have been initialized to their default
  73  *      values.
  74  */
  75
  76 isc_result_t
  77 dns_rdatalist_tordataset(dns_rdatalist_t *rdatalist,
  78                          dns_rdataset_t *rdataset);
  79 /*
  80  * Make 'rdataset' refer to the rdata in 'rdatalist'.
  81  *
  82  * Note:
  83  *      The caller must ensure that 'rdatalist' remains valid and unchanged
  84  *      while 'rdataset' is associated with it.
  85  *
  86  * Requires:
  87  *
  88  *      'rdatalist' is a valid rdatalist.
  89  *
  90  *      'rdataset' is a valid rdataset that is not currently associated with
  91  *      any rdata.
  92  *
  93  * Ensures:
  94  *      On success,
  95  *
  96  *              'rdataset' is associated with the rdata in rdatalist.
  97  *
  98  * Returns:
  99  *      ISC_R_SUCCESS
 100  */
 101
 102 ISC_LANG_ENDDECLS
 103
 104 #endif /* DNS_RDATALIST_H */