| /* Support functions for handling RES_USE_INET6 in getaddrinfo/nscd. |
| Copyright (C) 2017-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef _RES_USE_INET6_H |
| #define _RES_USE_INET6_H |
| |
| #include <resolv/resolv_context.h> |
| #include <resolv/resolv-internal.h> |
| |
| /* Ensure that RES_USE_INET6 is disabled in *CTX. Return true if |
| __resolv_context_enable_inet6 below should enable RES_USE_INET6 |
| again. */ |
| static inline bool |
| __resolv_context_disable_inet6 (struct resolv_context *ctx) |
| { |
| if (ctx != NULL && ctx->resp->options & DEPRECATED_RES_USE_INET6) |
| { |
| ctx->resp->options &= ~DEPRECATED_RES_USE_INET6; |
| return true; |
| } |
| else |
| return false; |
| } |
| |
| /* If ENABLE, re-enable RES_USE_INET6 in *CTX. To be paired with |
| __resolv_context_disable_inet6. */ |
| static inline void |
| __resolv_context_enable_inet6 (struct resolv_context *ctx, bool enable) |
| { |
| if (ctx != NULL && enable) |
| ctx->resp->options |= DEPRECATED_RES_USE_INET6; |
| } |
| |
| #endif |
