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4#ifndef _LINUX_BTF_H
5#define _LINUX_BTF_H 1
6
7#include <linux/types.h>
8
9struct btf;
10struct btf_member;
11struct btf_type;
12union bpf_attr;
13
14extern const struct file_operations btf_fops;
15
16void btf_put(struct btf *btf);
17int btf_new_fd(const union bpf_attr *attr);
18struct btf *btf_get_by_fd(int fd);
19int btf_get_info_by_fd(const struct btf *btf,
20 const union bpf_attr *attr,
21 union bpf_attr __user *uattr);
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43const struct btf_type *btf_type_id_size(const struct btf *btf,
44 u32 *type_id,
45 u32 *ret_size);
46void btf_type_seq_show(const struct btf *btf, u32 type_id, void *obj,
47 struct seq_file *m);
48int btf_get_fd_by_id(u32 id);
49u32 btf_id(const struct btf *btf);
50bool btf_member_is_reg_int(const struct btf *btf, const struct btf_type *s,
51 const struct btf_member *m,
52 u32 expected_offset, u32 expected_size);
53int btf_find_spin_lock(const struct btf *btf, const struct btf_type *t);
54bool btf_type_is_void(const struct btf_type *t);
55
56#ifdef CONFIG_BPF_SYSCALL
57const struct btf_type *btf_type_by_id(const struct btf *btf, u32 type_id);
58const char *btf_name_by_offset(const struct btf *btf, u32 offset);
59#else
60static inline const struct btf_type *btf_type_by_id(const struct btf *btf,
61 u32 type_id)
62{
63 return NULL;
64}
65static inline const char *btf_name_by_offset(const struct btf *btf,
66 u32 offset)
67{
68 return NULL;
69}
70#endif
71
72#endif
73