resolv/res_hconf.h

   1 /* Copyright (C) 1993-2015 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by David Mosberger (davidm@azstarnet.com).
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _RES_HCONF_H_
  20 #define _RES_HCONF_H_
  21
  22 #include <netdb.h>
  23
  24 #define TRIMDOMAINS_MAX 4
  25
  26 struct hconf
  27 {
  28   int initialized;
  29   int unused1;
  30   int unused2[4];
  31   int num_trimdomains;
  32   const char *trimdomain[TRIMDOMAINS_MAX];
  33   unsigned int flags;
  34 #  define HCONF_FLAG_INITED     (1 << 0) /* initialized? */
  35 #  define HCONF_FLAG_SPOOF      (1 << 1) /* refuse spoofed addresses */
  36 #  define HCONF_FLAG_SPOOFALERT (1 << 2) /* syslog warning of spoofed */
  37 #  define HCONF_FLAG_REORDER    (1 << 3) /* list best address first */
  38 #  define HCONF_FLAG_MULTI      (1 << 4) /* see comments for gethtbyname() */
  39 };
  40 extern struct hconf _res_hconf;
  41
  42 extern void _res_hconf_init (void);
  43 extern void _res_hconf_trim_domain (char *domain);
  44 extern void _res_hconf_trim_domains (struct hostent *hp);
  45 extern void _res_hconf_reorder_addrs (struct hostent *hp);
  46
  47 #endif /* _RES_HCONF_H_ */