security/bpf/hooks.c

   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
   9 static 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 };
  16
  17 static int __init bpf_lsm_init(void)
  18 {
  19         security_add_hooks(bpf_lsm_hooks, ARRAY_SIZE(bpf_lsm_hooks), "bpf");
  20         pr_info("LSM support for eBPF active\n");
  21         return 0;
  22 }
  23
  24 struct lsm_blob_sizes bpf_lsm_blob_sizes __lsm_ro_after_init = {
  25         .lbs_inode = sizeof(struct bpf_storage_blob),
  26 };
  27
  28 DEFINE_LSM(bpf) = {
  29         .name = "bpf",
  30         .init = bpf_lsm_init,
  31         .blobs = &bpf_lsm_blob_sizes
  32 };