external/bsd/bind/dist/lib/lwres/context_p.h

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (C) 2004, 2005, 2007, 2008  Internet Systems Consortium, Inc. ("ISC")
   5  * Copyright (C) 2000, 2001  Internet Software Consortium.
   6  *
   7  * Permission to use, copy, modify, and/or distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  12  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  13  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  14  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  15  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  16  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  17  * PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 /* Id: context_p.h,v 1.19 2008/12/17 23:47:58 tbox Exp */
  21
  22 #ifndef LWRES_CONTEXT_P_H
  23 #define LWRES_CONTEXT_P_H 1
  24
  25 /*! \file */
  26
  27 /*@{*/
  28 /**
  29  * Helper functions, assuming the context is always called "ctx" in
  30  * the scope these functions are called from.
  31  */
  32 #define CTXMALLOC(len)          ctx->malloc(ctx->arg, (len))
  33 #define CTXFREE(addr, len)      ctx->free(ctx->arg, (addr), (len))
  34 /*@}*/
  35
  36 #define LWRES_DEFAULT_TIMEOUT   120     /* 120 seconds for a reply */
  37
  38 /**
  39  * Not all the attributes here are actually settable by the application at
  40  * this time.
  41  */
  42 struct lwres_context {
  43         unsigned int            timeout;        /*%< time to wait for reply */
  44         lwres_uint32_t          serial;         /*%< serial number state */
  45
  46         /*
  47          * For network I/O.
  48          */
  49         int                     sock;           /*%< socket to send on */
  50         lwres_addr_t            address;        /*%< address to send to */
  51         int                     use_ipv4;       /*%< use IPv4 transaction */
  52         int                     use_ipv6;       /*%< use IPv6 transaction */
  53
  54         /*@{*/
  55         /*
  56          * Function pointers for allocating memory.
  57          */
  58         lwres_malloc_t          malloc;
  59         lwres_free_t            free;
  60         void                   *arg;
  61         /*@}*/
  62
  63         /*%
  64          * resolv.conf-like data
  65          */
  66         lwres_conf_t            confdata;
  67 };
  68
  69 #endif /* LWRES_CONTEXT_P_H */