1#include <linux/ptrace.h>
 2#include <linux/version.h>
 3#include <uapi/linux/bpf.h>
 4#include <bpf/bpf_helpers.h>
 5#include "trace_common.h"
 6
 7struct {
 8	__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
 9	__uint(key_size, sizeof(int));
10	__uint(value_size, sizeof(u32));
11	__uint(max_entries, 2);
12} my_map SEC(".maps");
13
14SEC("kprobe/" SYSCALL(sys_write))
15int bpf_prog1(struct pt_regs *ctx)
16{
17	struct S {
18		u64 pid;
19		u64 cookie;
20	} data;
21
22	data.pid = bpf_get_current_pid_tgid();
23	data.cookie = 0x12345678;
24
25	bpf_perf_event_output(ctx, &my_map, 0, &data, sizeof(data));
26
27	return 0;
28}
29
30char _license[] SEC("license") = "GPL";
31u32 _version SEC("version") = LINUX_VERSION_CODE;