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a5b38c5b DL |
1 | /* |
2 | * Copyright (c) 2016 David Lamparter, for NetDEF, Inc. | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice shall be included in | |
12 | * all copies or substantial portions of the Software. | |
13 | * | |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
17 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
19 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
20 | * DEALINGS IN THE SOFTWARE. | |
21 | */ | |
22 | ||
23 | #include "memory.h" | |
24 | #include "hook.h" | |
25 | ||
26 | DEFINE_MTYPE_STATIC(LIB, HOOK_ENTRY, "Hook entry") | |
27 | ||
28 | void _hook_register(struct hook *hook, void *funcptr, void *arg, bool has_arg, | |
08c4c73b DL |
29 | struct frrmod_runtime *module, const char *funcname, |
30 | int priority) | |
a5b38c5b | 31 | { |
08c4c73b | 32 | struct hookent *he = XCALLOC(MTYPE_HOOK_ENTRY, sizeof(*he)), **pos; |
a5b38c5b DL |
33 | he->hookfn = funcptr; |
34 | he->hookarg = arg; | |
35 | he->has_arg = has_arg; | |
36 | he->module = module; | |
37 | he->fnname = funcname; | |
08c4c73b | 38 | he->priority = priority; |
a5b38c5b | 39 | |
08c4c73b | 40 | for (pos = &hook->entries; *pos; pos = &(*pos)->next) |
996c9314 LB |
41 | if (hook->reverse ? (*pos)->priority < priority |
42 | : (*pos)->priority >= priority) | |
08c4c73b DL |
43 | break; |
44 | ||
45 | he->next = *pos; | |
46 | *pos = he; | |
a5b38c5b DL |
47 | } |
48 | ||
d62a17ae | 49 | void _hook_unregister(struct hook *hook, void *funcptr, void *arg, bool has_arg) |
a5b38c5b DL |
50 | { |
51 | struct hookent *he, **prev; | |
52 | ||
53 | for (prev = &hook->entries; (he = *prev) != NULL; prev = &he->next) | |
54 | if (he->hookfn == funcptr && he->hookarg == arg | |
d62a17ae | 55 | && he->has_arg == has_arg) { |
a5b38c5b DL |
56 | *prev = he->next; |
57 | XFREE(MTYPE_HOOK_ENTRY, he); | |
58 | break; | |
59 | } | |
60 | } |