Libbpf userspace function btf__add_var

0.2.0

Append new BTF_KIND_VAR type to BTF object.

Definition

int btf__add_var(struct btf *btf, const char *name, int linkage, int type_id);

Parameters

• btf: pointer to a struct btf object
• name: name of the variable, can't be NULL or empty;
• linkage: linkage type of the variable;

Return

>0, type ID of newly added BTF type; <0, on error.

enum btf_var_linkage

enum {
    BTF_VAR_STATIC = 0,
    BTF_VAR_GLOBAL_ALLOCATED = 1,
    BTF_VAR_GLOBAL_EXTERN = 2,
};

Usage

Docs could be improved

This part of the docs is incomplete, contributions are very welcome

Example

Docs could be improved

This part of the docs is incomplete, contributions are very welcome