| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2010 Wang Lei |
| 3 | * Author(s): Wang Lei (wang840925@gmail.com). All Rights Reserved. |
| 4 | * |
| 5 | * Internal DNS Rsolver stuff |
| 6 | * |
| 7 | * This library is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU Lesser General Public License as published |
| 9 | * by the Free Software Foundation; either version 2.1 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This library is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 15 | * the GNU Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public License |
| 18 | * along with this library; if not, see <http://www.gnu.org/licenses/>. |
| 19 | */ |
| 20 | |
| 21 | #include <linux/compiler.h> |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/sched.h> |
| 24 | |
| 25 | /* |
| 26 | * Layout of key payload words. |
| 27 | */ |
| 28 | enum { |
| 29 | dns_key_data, |
| 30 | dns_key_error, |
| 31 | }; |
| 32 | |
| 33 | /* |
| 34 | * dns_key.c |
| 35 | */ |
| 36 | extern const struct cred *dns_resolver_cache; |
| 37 | |
| 38 | /* |
| 39 | * debug tracing |
| 40 | */ |
| 41 | extern unsigned int dns_resolver_debug; |
| 42 | |
| 43 | #define kdebug(FMT, ...) \ |
| 44 | do { \ |
| 45 | if (unlikely(dns_resolver_debug)) \ |
| 46 | printk(KERN_DEBUG "[%-6.6s] "FMT"\n", \ |
| 47 | current->comm, ##__VA_ARGS__); \ |
| 48 | } while (0) |
| 49 | |
| 50 | #define kenter(FMT, ...) kdebug("==> %s("FMT")", __func__, ##__VA_ARGS__) |
| 51 | #define kleave(FMT, ...) kdebug("<== %s()"FMT"", __func__, ##__VA_ARGS__) |