27 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/* Copyright (c) 2017 Facebook3 */4#include <stddef.h>5#include <linux/bpf.h>6#include <bpf/bpf_helpers.h>7#include "bpf_misc.h"8 9struct {10 __uint(type, BPF_MAP_TYPE_ARRAY);11 __uint(max_entries, 1);12 __type(key, __u32);13 __type(value, __u64);14} test_map_id SEC(".maps");15 16SEC("raw_tp/sys_enter")17int test_obj_id(void *ctx)18{19 __u32 key = 0;20 __u64 *value;21 22 value = bpf_map_lookup_elem(&test_map_id, &key);23 __sink(value);24 25 return 0;26}27