resolv/tst-resolv-maybe_insert_sig.h

   1 /* Code snippet for optionally inserting ignored SIG records in resolver tests.
   2    Copyright (C) 2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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    <https://www.gnu.org/licenses/>.  */
  18
  19 /* Set to true for an alternative pass that inserts (ignored) SIG
  20    records.  This does not alter the response, so this property is not
  21    encoded in the QNAME.  The variable needs to be volatile because
  22    leaf attributes tell GCC that the response function is not
  23    called.  */
  24 static volatile bool insert_sig;
  25
  26 static void
  27 maybe_insert_sig (struct resolv_response_builder *b, const char *owner)
  28 {
  29   resolv_response_open_record (b, owner, C_IN, T_SIG, 60);
  30   resolv_response_add_data (b, "", 1);
  31   resolv_response_close_record (b);
  32 }