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 
8 struct s {
9 	int a;
10 	long long b;
11 } __attribute__((packed));
12 
13 /* .data section */
14 int in1 = -1;
15 long long in2 = -1;
16 
17 /* .bss section */
18 char in3 = '\0';
19 long long in4 __attribute__((aligned(64))) = 0;
20 struct s in5 = {};
21 
22 /* .rodata section */
23 const volatile struct {
24 	const int in6;
25 } in = {};
26 
27 /* .data section */
28 int out1 = -1;
29 long long out2 = -1;
30 
31 /* .bss section */
32 char out3 = 0;
33 long long out4 = 0;
34 int out6 = 0;
35 
36 extern bool CONFIG_BPF_SYSCALL __kconfig;
37 extern int LINUX_KERNEL_VERSION __kconfig;
38 bool bpf_syscall = 0;
39 int kern_ver = 0;
40 
41 struct s out5 = {};
42 
43 SEC("raw_tp/sys_enter")
44 int handler(const void *ctx)
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 
59 char _license[] SEC("license") = "GPL";
60