]>
Commit | Line | Data |
---|---|---|
53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
758dd67e LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2010 Lennart Poettering | |
6 | Copyright 2014 Michal Schmidt | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
dccca82b LP |
22 | #include <string.h> |
23 | ||
758dd67e LP |
24 | #include "hash-funcs.h" |
25 | ||
26 | void string_hash_func(const void *p, struct siphash *state) { | |
27 | siphash24_compress(p, strlen(p) + 1, state); | |
28 | } | |
29 | ||
30 | int string_compare_func(const void *a, const void *b) { | |
31 | return strcmp(a, b); | |
32 | } | |
33 | ||
34 | const struct hash_ops string_hash_ops = { | |
35 | .hash = string_hash_func, | |
36 | .compare = string_compare_func | |
37 | }; | |
38 | ||
39 | void trivial_hash_func(const void *p, struct siphash *state) { | |
40 | siphash24_compress(&p, sizeof(p), state); | |
41 | } | |
42 | ||
43 | int trivial_compare_func(const void *a, const void *b) { | |
44 | return a < b ? -1 : (a > b ? 1 : 0); | |
45 | } | |
46 | ||
47 | const struct hash_ops trivial_hash_ops = { | |
48 | .hash = trivial_hash_func, | |
49 | .compare = trivial_compare_func | |
50 | }; | |
51 | ||
52 | void uint64_hash_func(const void *p, struct siphash *state) { | |
53 | siphash24_compress(p, sizeof(uint64_t), state); | |
54 | } | |
55 | ||
56 | int uint64_compare_func(const void *_a, const void *_b) { | |
57 | uint64_t a, b; | |
58 | a = *(const uint64_t*) _a; | |
59 | b = *(const uint64_t*) _b; | |
60 | return a < b ? -1 : (a > b ? 1 : 0); | |
61 | } | |
62 | ||
63 | const struct hash_ops uint64_hash_ops = { | |
64 | .hash = uint64_hash_func, | |
65 | .compare = uint64_compare_func | |
66 | }; | |
67 | ||
68 | #if SIZEOF_DEV_T != 8 | |
69 | void devt_hash_func(const void *p, struct siphash *state) { | |
70 | siphash24_compress(p, sizeof(dev_t), state); | |
71 | } | |
72 | ||
73 | int devt_compare_func(const void *_a, const void *_b) { | |
74 | dev_t a, b; | |
75 | a = *(const dev_t*) _a; | |
76 | b = *(const dev_t*) _b; | |
77 | return a < b ? -1 : (a > b ? 1 : 0); | |
78 | } | |
79 | ||
80 | const struct hash_ops devt_hash_ops = { | |
81 | .hash = devt_hash_func, | |
82 | .compare = devt_compare_func | |
83 | }; | |
84 | #endif |