tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (c) 2024 Huawei Technologies Co., Ltd */
3
4#include "vmlinux.h"
5#include <errno.h>
6#include <bpf/bpf_helpers.h>
7
8char _license[] SEC("license") = "GPL";
9
10struct {
11 __uint(type, BPF_MAP_TYPE_PROG_ARRAY);
12 __uint(max_entries, 1);
13 __uint(key_size, sizeof(__u32));
14 __uint(value_size, sizeof(__u32));
15} jmp_table SEC(".maps");
16
17SEC("lsm/file_permission")
18int lsm_file_permission_prog(void *ctx)
19{
20 return 0;
21}
22
23SEC("lsm/file_alloc_security")
24int lsm_file_alloc_security_prog(void *ctx)
25{
26 return 0;
27}
28
29SEC("lsm/file_alloc_security")
30int lsm_file_alloc_security_entry(void *ctx)
31{
32 bpf_tail_call_static(ctx, &jmp_table, 0);
33 return 0;
34}