43 lines · c
1// SPDX-License-Identifier: GPL-2.02/* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */3 4#include <vmlinux.h>5#include <bpf/bpf_tracing.h>6#include <bpf/bpf_helpers.h>7#include "bpf_misc.h"8 9#include "nested_trust_common.h"10 11char _license[] SEC("license") = "GPL";12 13struct {14 __uint(type, BPF_MAP_TYPE_SK_STORAGE);15 __uint(map_flags, BPF_F_NO_PREALLOC);16 __type(key, int);17 __type(value, u64);18} sk_storage_map SEC(".maps");19 20SEC("tp_btf/task_newtask")21__success22int BPF_PROG(test_read_cpumask, struct task_struct *task, u64 clone_flags)23{24 bpf_cpumask_test_cpu(0, task->cpus_ptr);25 return 0;26}27 28SEC("tp_btf/tcp_probe")29__success30int BPF_PROG(test_skb_field, struct sock *sk, struct sk_buff *skb)31{32 bpf_sk_storage_get(&sk_storage_map, skb->sk, 0, 0);33 return 0;34}35 36SEC("tp_btf/task_newtask")37__success38int BPF_PROG(test_nested_offset, struct task_struct *task, u64 clone_flags)39{40 bpf_cpumask_first_zero(&task->cpus_mask);41 return 0;42}43