#include "vmlinux.h"
#include <linux/version.h>
#include <bpf/bpf_helpers.h>

struct {
        __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
        __uint(key_size, sizeof(int));
        __uint(value_size, sizeof(u32));
        __uint(max_entries, 2);
} my_map SEC(".maps");

SEC("ksyscall/write")
int bpf_prog1(struct pt_regs *ctx)
{
        struct S {
                u64 pid;
                u64 cookie;
        } data;

        data.pid = bpf_get_current_pid_tgid();
        data.cookie = 0x12345678;

        bpf_perf_event_output(ctx, &my_map, 0, &data, sizeof(data));

        return 0;
}

char _license[] SEC("license") = "GPL";
u32 _version SEC("version") = LINUX_VERSION_CODE;