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(bpf_lsm_hooks, ARRAY_SIZE(bpf_lsm_hooks), 27 &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