1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
/***
Copyright © 2016 Daniel Mack
[Except for the stuff copy/pasted from the kernel sources, see below]
***/
#include <linux/bpf.h>
#include <stdint.h>
#include <sys/syscall.h>
#include "list.h"
#include "macro.h"
typedef struct BPFProgram BPFProgram;
struct BPFProgram {
unsigned n_ref;
int kernel_fd;
uint32_t prog_type;
size_t n_instructions;
size_t allocated;
struct bpf_insn *instructions;
char *attached_path;
int attached_type;
uint32_t attached_flags;
};
int bpf_program_new(uint32_t prog_type, BPFProgram **ret);
BPFProgram *bpf_program_unref(BPFProgram *p);
BPFProgram *bpf_program_ref(BPFProgram *p);
int bpf_program_add_instructions(BPFProgram *p, const struct bpf_insn *insn, size_t count);
int bpf_program_load_kernel(BPFProgram *p, char *log_buf, size_t log_size);
int bpf_program_cgroup_attach(BPFProgram *p, int type, const char *path, uint32_t flags);
int bpf_program_cgroup_detach(BPFProgram *p);
int bpf_map_new(enum bpf_map_type type, size_t key_size, size_t value_size, size_t max_entries, uint32_t flags);
int bpf_map_update_element(int fd, const void *key, void *value);
int bpf_map_lookup_element(int fd, const void *key, void *value);
DEFINE_TRIVIAL_CLEANUP_FUNC(BPFProgram*, bpf_program_unref);
|
