// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2021 Facebook */

#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>

char _license[] SEC("license") = "GPL";

struct {
        __uint(type, BPF_MAP_TYPE_HASH);
        __uint(max_entries, 1);
        __type(key, int);
        __type(value, long);
} hash1 SEC(".maps");

struct {
        __uint(type, BPF_MAP_TYPE_HASH);
        __uint(max_entries, 1);
        __type(key, int);
        __type(value, long);
} hash2 SEC(".maps");

int pass1 = 0;
int pass2 = 0;

SEC("fentry/htab_map_delete_elem")
int BPF_PROG(on_delete, struct bpf_map *map)
{
        int key = 0;

        if (map == (void *)&hash1) {
                pass1++;
                return 0;
        }
        if (map == (void *)&hash2) {
                pass2++;
                bpf_map_delete_elem(&hash2, &key);
                return 0;
        }

        return 0;
}