nptl/herrno.c

   1 /* Copyright (C) 1996-2018 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <features.h>
  19 #include <netdb.h>
  20 #undef h_errno
  21
  22 #include <tls.h>
  23
  24 /* We need to have the error status variable of the resolver
  25    accessible in the libc.  */
  26 extern __thread int __h_errno;
  27
  28
  29 /* When threaded, h_errno may be a per-thread variable.  */
  30 int *
  31 __h_errno_location (void)
  32 {
  33   return &__h_errno;
  34 }