1 | // SPDX-License-Identifier: GPL-2.0 |
2 | |
3 | /* |
4 | * Copyright (C) 2020 Google LLC. |
5 | */ |
6 | #include <linux/lsm_hooks.h> |
7 | #include <linux/bpf_lsm.h> |
8 | #include <uapi/linux/lsm.h> |
9 | |
10 | static struct security_hook_list bpf_lsm_hooks[] __ro_after_init = { |
11 | #define LSM_HOOK(RET, DEFAULT, NAME, ...) \ |
12 | LSM_HOOK_INIT(NAME, bpf_lsm_##NAME), |
13 | #include <linux/lsm_hook_defs.h> |
14 | #undef LSM_HOOK |
15 | LSM_HOOK_INIT(inode_free_security, bpf_inode_storage_free), |
16 | LSM_HOOK_INIT(task_free, bpf_task_storage_free), |
17 | }; |
18 | |
19 | static const struct lsm_id bpf_lsmid = { |
20 | .name = "bpf" , |
21 | .id = LSM_ID_BPF, |
22 | }; |
23 | |
24 | static int __init bpf_lsm_init(void) |
25 | { |
26 | security_add_hooks(hooks: bpf_lsm_hooks, ARRAY_SIZE(bpf_lsm_hooks), |
27 | lsmid: &bpf_lsmid); |
28 | pr_info("LSM support for eBPF active\n" ); |
29 | return 0; |
30 | } |
31 | |
32 | struct lsm_blob_sizes bpf_lsm_blob_sizes __ro_after_init = { |
33 | .lbs_inode = sizeof(struct bpf_storage_blob), |
34 | .lbs_task = sizeof(struct bpf_storage_blob), |
35 | }; |
36 | |
37 | DEFINE_LSM(bpf) = { |
38 | .name = "bpf" , |
39 | .init = bpf_lsm_init, |
40 | .blobs = &bpf_lsm_blob_sizes |
41 | }; |
42 | |