diff options
| -rw-r--r-- | elf/dl-tunable-types.h | 42 | ||||
| -rw-r--r-- | elf/dl-tunables.h | 35 | ||||
| -rw-r--r-- | scripts/gen-tunables.awk | 4 |
3 files changed, 43 insertions, 38 deletions
diff --git a/elf/dl-tunable-types.h b/elf/dl-tunable-types.h index 8f6a383dcc..05d4958e1c 100644 --- a/elf/dl-tunable-types.h +++ b/elf/dl-tunable-types.h @@ -1,4 +1,4 @@ -/* Tunable type information. +/* Internal representation of tunables. Copyright (C) 2016-2021 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -18,8 +18,14 @@ <https://www.gnu.org/licenses/>. */ #ifndef _TUNABLE_TYPES_H_ -# define _TUNABLE_TYPES_H_ +#define _TUNABLE_TYPES_H_ + +/* Note: This header is included in the generated dl-tunables-list.h and + only used internally in the tunables implementation in dl-tunables.c. */ + +#include <stdbool.h> #include <stddef.h> +#include <stdint.h> typedef enum { @@ -36,14 +42,6 @@ typedef struct 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 @@ -58,5 +56,29 @@ typedef enum TUNABLE_SECLEVEL_NONE = 2, } tunable_seclevel_t; +/* A tunable. */ +struct _tunable +{ + const char *name; /* Internal name of the tunable. */ + tunable_type_t type; /* Data type of the tunable. */ + tunable_val_t val; /* The value. */ + bool initialized; /* Flag to indicate that the tunable is + initialized. */ + tunable_seclevel_t security_level; /* Specify the security level for the + tunable with respect to AT_SECURE + programs. See description of + tunable_seclevel_t to see a + description of the values. + + Note that even if the tunable is + read, it may not get used by the + target module if the value is + considered unsafe. */ + /* Compatibility elements. */ + const char *env_alias; /* The compatibility environment + variable name. */ +}; + +typedef struct _tunable tunable_t; #endif diff --git a/elf/dl-tunables.h b/elf/dl-tunables.h index dfa16c1977..971376ba8d 100644 --- a/elf/dl-tunables.h +++ b/elf/dl-tunables.h @@ -21,8 +21,6 @@ #ifndef _TUNABLES_H_ #define _TUNABLES_H_ -#include <stdbool.h> - #if !HAVE_TUNABLES static inline void __always_inline @@ -31,34 +29,17 @@ __tunables_init (char **unused __attribute__ ((unused))) /* This is optimized out if tunables are not enabled. */ } #else - +# include <stdbool.h> # include <stddef.h> -# include "dl-tunable-types.h" +# include <stdint.h> -/* A tunable. */ -struct _tunable +typedef union { - const char *name; /* Internal name of the tunable. */ - tunable_type_t type; /* Data type of the tunable. */ - tunable_val_t val; /* The value. */ - bool initialized; /* Flag to indicate that the tunable is - initialized. */ - tunable_seclevel_t security_level; /* Specify the security level for the - tunable with respect to AT_SECURE - programs. See description of - tunable_seclevel_t to see a - description of the values. - - Note that even if the tunable is - read, it may not get used by the - target module if the value is - considered unsafe. */ - /* Compatibility elements. */ - const char *env_alias; /* The compatibility environment - variable name. */ -}; - -typedef struct _tunable tunable_t; + int64_t numval; + const char *strval; +} tunable_val_t; + +typedef void (*tunable_callback_t) (tunable_val_t *); /* Full name for a tunable is top_ns.tunable_ns.id. */ # define TUNABLE_NAME_S(top,ns,id) #top "." #ns "." #id diff --git a/scripts/gen-tunables.awk b/scripts/gen-tunables.awk index 622199061a..cda12ef62e 100644 --- a/scripts/gen-tunables.awk +++ b/scripts/gen-tunables.awk @@ -156,8 +156,10 @@ END { } print "} tunable_id_t;\n" - # Finally, the tunable list. print "\n#ifdef TUNABLES_INTERNAL" + # Internal definitions. + print "# include \"dl-tunable-types.h\"" + # Finally, the tunable list. print "static tunable_t tunable_list[] attribute_relro = {" for (tnm in types) { split (tnm, indices, SUBSEP); |