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
8 char _license[] SEC("license") = "GPL";
9
10 struct {
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
17 SEC("lsm/file_permission")
18 int lsm_file_permission_prog(void *ctx)
19 {
20 return 0;
21 }
22
23 SEC("lsm/file_alloc_security")
24 int lsm_file_alloc_security_prog(void *ctx)
25 {
26 return 0;
27 }
28
29 SEC("lsm/file_alloc_security")
30 int lsm_file_alloc_security_entry(void *ctx)
31 {
32 bpf_tail_call_static(ctx, &jmp_table, 0);
33 return 0;
34 }
35
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.