1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (c) 2019 Facebook */
3
4#include <stdbool.h>
5#include <linux/bpf.h>
6#include <bpf/bpf_helpers.h>
7
8struct s {
9	int a;
10	long long b;
11} __attribute__((packed));
12
13/* .data section */
14int in1 = -1;
15long long in2 = -1;
16
17/* .bss section */
18char in3 = '\0';
19long long in4 __attribute__((aligned(64))) = 0;
20struct s in5 = {};
21
22/* .rodata section */
23const volatile struct {
24	const int in6;
25} in = {};
26
27/* .data section */
28int out1 = -1;
29long long out2 = -1;
30
31/* .bss section */
32char out3 = 0;
33long long out4 = 0;
34int out6 = 0;
35
36extern bool CONFIG_BPF_SYSCALL __kconfig;
37extern int LINUX_KERNEL_VERSION __kconfig;
38bool bpf_syscall = 0;
39int kern_ver = 0;
40
41SEC("raw_tp/sys_enter")
42int handler(const void *ctx)
43{
44	static volatile struct s out5;
45
46	out1 = in1;
47	out2 = in2;
48	out3 = in3;
49	out4 = in4;
50	out5 = in5;
51	out6 = in.in6;
52
53	bpf_syscall = CONFIG_BPF_SYSCALL;
54	kern_ver = LINUX_KERNEL_VERSION;
55
56	return 0;
57}
58
59char _license[] SEC("license") = "GPL";
60