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 LSM_HOOK_INIT(task_free, bpf_task_storage_free), 16 }; 17 18 static 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 25 struct 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 30 DEFINE_LSM(bpf) = { 31 .name = "bpf", 32 .init = bpf_lsm_init, 33 .blobs = &bpf_lsm_blob_sizes 34 }; 35