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
 9static struct security_hook_list bpf_lsm_hooks[] __lsm_ro_after_init = {
10	#define LSM_HOOK(RET, DEFAULT, NAME, ...) \
11	LSM_HOOK_INIT(NAME, bpf_lsm_##NAME),
12	#include <linux/lsm_hook_defs.h>
13	#undef LSM_HOOK
14	LSM_HOOK_INIT(inode_free_security, bpf_inode_storage_free),
15	LSM_HOOK_INIT(task_free, bpf_task_storage_free),
16};
17
18static int __init bpf_lsm_init(void)
19{
20	security_add_hooks(bpf_lsm_hooks, ARRAY_SIZE(bpf_lsm_hooks), "bpf");
21	pr_info("LSM support for eBPF active\n");
22	return 0;
23}
24
25struct lsm_blob_sizes bpf_lsm_blob_sizes __lsm_ro_after_init = {
26	.lbs_inode = sizeof(struct bpf_storage_blob),
27	.lbs_task = sizeof(struct bpf_storage_blob),
28};
29
30DEFINE_LSM(bpf) = {
31	.name = "bpf",
32	.init = bpf_lsm_init,
33	.blobs = &bpf_lsm_blob_sizes
34};