Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /* Copyright (c) 2018 Facebook */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) #ifndef __LIBBPF_BTF_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) #define __LIBBPF_BTF_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <stdarg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <stdbool.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/btf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include "libbpf_common.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #ifdef __cplusplus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) extern "C" {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #define BTF_ELF_SEC ".BTF"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #define BTF_EXT_ELF_SEC ".BTF.ext"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #define MAPS_ELF_SEC ".maps"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) struct btf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) struct btf_ext;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) struct btf_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) struct bpf_object;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) enum btf_endianness {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	BTF_LITTLE_ENDIAN = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	BTF_BIG_ENDIAN = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) LIBBPF_API void btf__free(struct btf *btf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) LIBBPF_API struct btf *btf__new(const void *data, __u32 size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) LIBBPF_API struct btf *btf__new_empty(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) LIBBPF_API struct btf *btf__parse(const char *path, struct btf_ext **btf_ext);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) LIBBPF_API struct btf *btf__parse_elf(const char *path, struct btf_ext **btf_ext);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) LIBBPF_API struct btf *btf__parse_raw(const char *path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) LIBBPF_API int btf__finalize_data(struct bpf_object *obj, struct btf *btf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) LIBBPF_API int btf__load(struct btf *btf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) LIBBPF_API __s32 btf__find_by_name(const struct btf *btf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 				   const char *type_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) LIBBPF_API __s32 btf__find_by_name_kind(const struct btf *btf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 					const char *type_name, __u32 kind);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) LIBBPF_API __u32 btf__get_nr_types(const struct btf *btf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) LIBBPF_API const struct btf_type *btf__type_by_id(const struct btf *btf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 						  __u32 id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) LIBBPF_API size_t btf__pointer_size(const struct btf *btf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) LIBBPF_API int btf__set_pointer_size(struct btf *btf, size_t ptr_sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) LIBBPF_API enum btf_endianness btf__endianness(const struct btf *btf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) LIBBPF_API int btf__set_endianness(struct btf *btf, enum btf_endianness endian);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) LIBBPF_API __s64 btf__resolve_size(const struct btf *btf, __u32 type_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) LIBBPF_API int btf__resolve_type(const struct btf *btf, __u32 type_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) LIBBPF_API int btf__align_of(const struct btf *btf, __u32 id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) LIBBPF_API int btf__fd(const struct btf *btf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) LIBBPF_API void btf__set_fd(struct btf *btf, int fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) LIBBPF_API const void *btf__get_raw_data(const struct btf *btf, __u32 *size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) LIBBPF_API const char *btf__name_by_offset(const struct btf *btf, __u32 offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) LIBBPF_API const char *btf__str_by_offset(const struct btf *btf, __u32 offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) LIBBPF_API int btf__get_from_id(__u32 id, struct btf **btf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) LIBBPF_API int btf__get_map_kv_tids(const struct btf *btf, const char *map_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 				    __u32 expected_key_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 				    __u32 expected_value_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 				    __u32 *key_type_id, __u32 *value_type_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) LIBBPF_API struct btf_ext *btf_ext__new(__u8 *data, __u32 size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) LIBBPF_API void btf_ext__free(struct btf_ext *btf_ext);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) LIBBPF_API const void *btf_ext__get_raw_data(const struct btf_ext *btf_ext,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 					     __u32 *size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) LIBBPF_API LIBBPF_DEPRECATED("btf_ext__reloc_func_info was never meant as a public API and has wrong assumptions embedded in it; it will be removed in the future libbpf versions")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) int btf_ext__reloc_func_info(const struct btf *btf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 			     const struct btf_ext *btf_ext,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 			     const char *sec_name, __u32 insns_cnt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 			     void **func_info, __u32 *cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) LIBBPF_API LIBBPF_DEPRECATED("btf_ext__reloc_line_info was never meant as a public API and has wrong assumptions embedded in it; it will be removed in the future libbpf versions")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) int btf_ext__reloc_line_info(const struct btf *btf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 			     const struct btf_ext *btf_ext,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 			     const char *sec_name, __u32 insns_cnt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 			     void **line_info, __u32 *cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) LIBBPF_API __u32 btf_ext__func_info_rec_size(const struct btf_ext *btf_ext);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) LIBBPF_API __u32 btf_ext__line_info_rec_size(const struct btf_ext *btf_ext);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) LIBBPF_API struct btf *libbpf_find_kernel_btf(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) LIBBPF_API int btf__find_str(struct btf *btf, const char *s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) LIBBPF_API int btf__add_str(struct btf *btf, const char *s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) LIBBPF_API int btf__add_int(struct btf *btf, const char *name, size_t byte_sz, int encoding);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) LIBBPF_API int btf__add_ptr(struct btf *btf, int ref_type_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) LIBBPF_API int btf__add_array(struct btf *btf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 			      int index_type_id, int elem_type_id, __u32 nr_elems);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) /* struct/union construction APIs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) LIBBPF_API int btf__add_struct(struct btf *btf, const char *name, __u32 sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) LIBBPF_API int btf__add_union(struct btf *btf, const char *name, __u32 sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) LIBBPF_API int btf__add_field(struct btf *btf, const char *name, int field_type_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 			      __u32 bit_offset, __u32 bit_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) /* enum construction APIs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) LIBBPF_API int btf__add_enum(struct btf *btf, const char *name, __u32 bytes_sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) LIBBPF_API int btf__add_enum_value(struct btf *btf, const char *name, __s64 value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) enum btf_fwd_kind {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	BTF_FWD_STRUCT = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	BTF_FWD_UNION = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	BTF_FWD_ENUM = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) LIBBPF_API int btf__add_fwd(struct btf *btf, const char *name, enum btf_fwd_kind fwd_kind);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) LIBBPF_API int btf__add_typedef(struct btf *btf, const char *name, int ref_type_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) LIBBPF_API int btf__add_volatile(struct btf *btf, int ref_type_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) LIBBPF_API int btf__add_const(struct btf *btf, int ref_type_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) LIBBPF_API int btf__add_restrict(struct btf *btf, int ref_type_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /* func and func_proto construction APIs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) LIBBPF_API int btf__add_func(struct btf *btf, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 			     enum btf_func_linkage linkage, int proto_type_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) LIBBPF_API int btf__add_func_proto(struct btf *btf, int ret_type_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) LIBBPF_API int btf__add_func_param(struct btf *btf, const char *name, int type_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) /* var & datasec construction APIs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) LIBBPF_API int btf__add_var(struct btf *btf, const char *name, int linkage, int type_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) LIBBPF_API int btf__add_datasec(struct btf *btf, const char *name, __u32 byte_sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) LIBBPF_API int btf__add_datasec_var_info(struct btf *btf, int var_type_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 					 __u32 offset, __u32 byte_sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct btf_dedup_opts {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	unsigned int dedup_table_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	bool dont_resolve_fwds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) LIBBPF_API int btf__dedup(struct btf *btf, struct btf_ext *btf_ext,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 			  const struct btf_dedup_opts *opts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) struct btf_dump;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) struct btf_dump_opts {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	void *ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) typedef void (*btf_dump_printf_fn_t)(void *ctx, const char *fmt, va_list args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) LIBBPF_API struct btf_dump *btf_dump__new(const struct btf *btf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 					  const struct btf_ext *btf_ext,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 					  const struct btf_dump_opts *opts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 					  btf_dump_printf_fn_t printf_fn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) LIBBPF_API void btf_dump__free(struct btf_dump *d);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) LIBBPF_API int btf_dump__dump_type(struct btf_dump *d, __u32 id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) struct btf_dump_emit_type_decl_opts {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	/* size of this struct, for forward/backward compatiblity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	size_t sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	/* optional field name for type declaration, e.g.:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	 * - struct my_struct <FNAME>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	 * - void (*<FNAME>)(int)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	 * - char (*<FNAME>)[123]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	const char *field_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	/* extra indentation level (in number of tabs) to emit for multi-line
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	 * type declarations (e.g., anonymous struct); applies for lines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	 * starting from the second one (first line is assumed to have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	 * necessary indentation already
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	int indent_level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	/* strip all the const/volatile/restrict mods */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	bool strip_mods;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	size_t :0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) #define btf_dump_emit_type_decl_opts__last_field strip_mods
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) LIBBPF_API int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) btf_dump__emit_type_decl(struct btf_dump *d, __u32 id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 			 const struct btf_dump_emit_type_decl_opts *opts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)  * A set of helpers for easier BTF types handling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static inline __u16 btf_kind(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	return BTF_INFO_KIND(t->info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) static inline __u16 btf_vlen(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	return BTF_INFO_VLEN(t->info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) static inline bool btf_kflag(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	return BTF_INFO_KFLAG(t->info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) static inline bool btf_is_void(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	return btf_kind(t) == BTF_KIND_UNKN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static inline bool btf_is_int(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	return btf_kind(t) == BTF_KIND_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) static inline bool btf_is_ptr(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	return btf_kind(t) == BTF_KIND_PTR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) static inline bool btf_is_array(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	return btf_kind(t) == BTF_KIND_ARRAY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) static inline bool btf_is_struct(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	return btf_kind(t) == BTF_KIND_STRUCT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) static inline bool btf_is_union(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	return btf_kind(t) == BTF_KIND_UNION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) static inline bool btf_is_composite(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	__u16 kind = btf_kind(t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	return kind == BTF_KIND_STRUCT || kind == BTF_KIND_UNION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) static inline bool btf_is_enum(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	return btf_kind(t) == BTF_KIND_ENUM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) static inline bool btf_is_fwd(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	return btf_kind(t) == BTF_KIND_FWD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) static inline bool btf_is_typedef(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	return btf_kind(t) == BTF_KIND_TYPEDEF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) static inline bool btf_is_volatile(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	return btf_kind(t) == BTF_KIND_VOLATILE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static inline bool btf_is_const(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	return btf_kind(t) == BTF_KIND_CONST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) static inline bool btf_is_restrict(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	return btf_kind(t) == BTF_KIND_RESTRICT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) static inline bool btf_is_mod(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	__u16 kind = btf_kind(t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	return kind == BTF_KIND_VOLATILE ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	       kind == BTF_KIND_CONST ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	       kind == BTF_KIND_RESTRICT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) static inline bool btf_is_func(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	return btf_kind(t) == BTF_KIND_FUNC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) static inline bool btf_is_func_proto(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	return btf_kind(t) == BTF_KIND_FUNC_PROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) static inline bool btf_is_var(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	return btf_kind(t) == BTF_KIND_VAR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) static inline bool btf_is_datasec(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	return btf_kind(t) == BTF_KIND_DATASEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) static inline __u8 btf_int_encoding(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	return BTF_INT_ENCODING(*(__u32 *)(t + 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) static inline __u8 btf_int_offset(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	return BTF_INT_OFFSET(*(__u32 *)(t + 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) static inline __u8 btf_int_bits(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	return BTF_INT_BITS(*(__u32 *)(t + 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) static inline struct btf_array *btf_array(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	return (struct btf_array *)(t + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) static inline struct btf_enum *btf_enum(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	return (struct btf_enum *)(t + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) static inline struct btf_member *btf_members(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	return (struct btf_member *)(t + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) /* Get bit offset of a member with specified index. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) static inline __u32 btf_member_bit_offset(const struct btf_type *t,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 					  __u32 member_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	const struct btf_member *m = btf_members(t) + member_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 	bool kflag = btf_kflag(t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	return kflag ? BTF_MEMBER_BIT_OFFSET(m->offset) : m->offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)  * Get bitfield size of a member, assuming t is BTF_KIND_STRUCT or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)  * BTF_KIND_UNION. If member is not a bitfield, zero is returned.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) static inline __u32 btf_member_bitfield_size(const struct btf_type *t,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 					     __u32 member_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	const struct btf_member *m = btf_members(t) + member_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	bool kflag = btf_kflag(t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	return kflag ? BTF_MEMBER_BITFIELD_SIZE(m->offset) : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) static inline struct btf_param *btf_params(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	return (struct btf_param *)(t + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) static inline struct btf_var *btf_var(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	return (struct btf_var *)(t + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) static inline struct btf_var_secinfo *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) btf_var_secinfos(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	return (struct btf_var_secinfo *)(t + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) #ifdef __cplusplus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) } /* extern "C" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) #endif /* __LIBBPF_BTF_H */