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/* Tunable type information.
Copyright (C) 2016-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef _TUNABLE_TYPES_H_
# define _TUNABLE_TYPES_H_
#include <stddef.h>
typedef enum
{
TUNABLE_TYPE_INT_32,
TUNABLE_TYPE_UINT_64,
TUNABLE_TYPE_SIZE_T,
TUNABLE_TYPE_STRING
} tunable_type_code_t;
typedef struct
{
tunable_type_code_t type_code;
int64_t min;
int64_t max;
} tunable_type_t;
typedef union
{
int64_t numval;
const char *strval;
} tunable_val_t;
typedef void (*tunable_callback_t) (tunable_val_t *);
/* Security level for tunables. This decides what to do with individual
tunables for AT_SECURE binaries. */
typedef enum
{
/* Erase the tunable for AT_SECURE binaries so that child processes don't
read it. */
TUNABLE_SECLEVEL_SXID_ERASE = 0,
/* Ignore the tunable for AT_SECURE binaries, but don't erase it, so that
child processes can read it. */
TUNABLE_SECLEVEL_SXID_IGNORE = 1,
/* Read the tunable. */
TUNABLE_SECLEVEL_NONE = 2,
} tunable_seclevel_t;
#endif
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