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 };
17
18 static const struct lsm_id bpf_lsmid = {
19 .name = "bpf",
20 .id = LSM_ID_BPF,
21 };
22
bpf_lsm_init(void)23 static int __init bpf_lsm_init(void)
24 {
25 security_add_hooks(bpf_lsm_hooks, ARRAY_SIZE(bpf_lsm_hooks),
26 &bpf_lsmid);
27 pr_info("LSM support for eBPF active\n");
28 return 0;
29 }
30
31 struct lsm_blob_sizes bpf_lsm_blob_sizes __ro_after_init = {
32 .lbs_inode = sizeof(struct bpf_storage_blob),
33 };
34
35 DEFINE_LSM(bpf) = {
36 .name = "bpf",
37 .init = bpf_lsm_init,
38 .blobs = &bpf_lsm_blob_sizes
39 };
40