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Diffstat (limited to 'elf/dl-tunable-types.h')
-rw-r--r-- | elf/dl-tunable-types.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/elf/dl-tunable-types.h b/elf/dl-tunable-types.h new file mode 100644 index 0000000000..884a0b04d0 --- /dev/null +++ b/elf/dl-tunable-types.h @@ -0,0 +1,62 @@ +/* Tunable type information. + + Copyright (C) 2016-2018 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 + <http://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 |