// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2020 Facebook */
#include <vmlinux.h>
#include <bpf/bpf_helpers.h>

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

SEC("iter/bpf_map")
int dump_bpf_map(struct bpf_iter__bpf_map *ctx)
{
        struct seq_file *seq = ctx->meta->seq;
        __u64 seq_num = ctx->meta->seq_num;
        struct bpf_map *map = ctx->map;

        if (map == (void *)0) {
                BPF_SEQ_PRINTF(seq, "      %%%%%% END %%%%%%\n");
                return 0;
        }

        if (seq_num == 0)
                BPF_SEQ_PRINTF(seq, "      id   refcnt  usercnt  locked_vm\n");

        BPF_SEQ_PRINTF(seq, "%8u %8ld %8ld %10lu\n", map->id, map->refcnt.counter,
                       map->usercnt.counter,
                       0LLU);
        return 0;
}