1#include <linux/ptrace.h>
 2#include <linux/version.h>
 3#include <uapi/linux/bpf.h>
 4#include "bpf_helpers.h"
 5
 6struct bpf_map_def SEC("maps") my_map = {
 7	.type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,
 8	.key_size = sizeof(int),
 9	.value_size = sizeof(u32),
10	.max_entries = 2,
11};
12
13SEC("kprobe/sys_write")
14int bpf_prog1(struct pt_regs *ctx)
15{
16	struct S {
17		u64 pid;
18		u64 cookie;
19	} data;
20
21	data.pid = bpf_get_current_pid_tgid();
22	data.cookie = 0x12345678;
23
24	bpf_perf_event_output(ctx, &my_map, 0, &data, sizeof(data));
25
26	return 0;
27}
28
29char _license[] SEC("license") = "GPL";
30u32 _version SEC("version") = LINUX_VERSION_CODE;