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67e58f39 SP |
1 | /* Tunable type information. |
2 | ||
04277e02 | 3 | Copyright (C) 2016-2019 Free Software Foundation, Inc. |
67e58f39 SP |
4 | This file is part of the GNU C Library. |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
17 | License along with the GNU C Library; if not, see | |
5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
67e58f39 SP |
19 | |
20 | #ifndef _TUNABLE_TYPES_H_ | |
21 | # define _TUNABLE_TYPES_H_ | |
22 | #include <stddef.h> | |
23 | ||
67e58f39 SP |
24 | typedef enum |
25 | { | |
26 | TUNABLE_TYPE_INT_32, | |
ad2f35cb | 27 | TUNABLE_TYPE_UINT_64, |
67e58f39 SP |
28 | TUNABLE_TYPE_SIZE_T, |
29 | TUNABLE_TYPE_STRING | |
30 | } tunable_type_code_t; | |
31 | ||
32 | typedef struct | |
33 | { | |
34 | tunable_type_code_t type_code; | |
35 | int64_t min; | |
36 | int64_t max; | |
37 | } tunable_type_t; | |
38 | ||
39 | typedef union | |
40 | { | |
41 | int64_t numval; | |
42 | const char *strval; | |
43 | } tunable_val_t; | |
44 | ||
8cbc826c SP |
45 | typedef void (*tunable_callback_t) (tunable_val_t *); |
46 | ||
8b9e9c3c SP |
47 | /* Security level for tunables. This decides what to do with individual |
48 | tunables for AT_SECURE binaries. */ | |
49 | typedef enum | |
50 | { | |
51 | /* Erase the tunable for AT_SECURE binaries so that child processes don't | |
52 | read it. */ | |
53 | TUNABLE_SECLEVEL_SXID_ERASE = 0, | |
54 | /* Ignore the tunable for AT_SECURE binaries, but don't erase it, so that | |
55 | child processes can read it. */ | |
56 | TUNABLE_SECLEVEL_SXID_IGNORE = 1, | |
57 | /* Read the tunable. */ | |
58 | TUNABLE_SECLEVEL_NONE = 2, | |
59 | } tunable_seclevel_t; | |
60 | ||
61 | ||
67e58f39 | 62 | #endif |