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__) |
52 | |