libbpf: add btf_dump API for BTF-to-C conversion

libbpf-y := libbpf.o bpf.o nlattr.o btf.o libbpf_errno.o str_error.o netlink.o bpf_prog_linfo.o libbpf_probes.o xsk.o hashmap.o

libbpf-y := libbpf.o bpf.o nlattr.o btf.o libbpf_errno.o str_error.o \

	    netlink.o bpf_prog_linfo.o libbpf_probes.o xsk.o hashmap.o \

	    btf_dump.o

#ifndef __LIBBPF_BTF_H

#define __LIBBPF_BTF_H

#include <stdarg.h>

#include <linux/types.h>

#ifdef __cplusplus

LIBBPF_API int btf__dedup(struct btf *btf, struct btf_ext *btf_ext,

			  const struct btf_dedup_opts *opts);

struct btf_dump;

struct btf_dump_opts {

	void *ctx;

};

typedef void (*btf_dump_printf_fn_t)(void *ctx, const char *fmt, va_list args);

LIBBPF_API struct btf_dump *btf_dump__new(const struct btf *btf,

					  const struct btf_ext *btf_ext,

					  const struct btf_dump_opts *opts,

					  btf_dump_printf_fn_t printf_fn);

LIBBPF_API void btf_dump__free(struct btf_dump *d);

LIBBPF_API int btf_dump__dump_type(struct btf_dump *d, __u32 id);

#ifdef __cplusplus

} /* extern "C" */

#endif

LIBBPF_0.0.4 {

	global:

		btf_dump__dump_type;

		btf_dump__free;

		btf_dump__new;

		btf__parse_elf;

} LIBBPF_0.0.3;