| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) 2020 Google LLC. |
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| 5 | */ |
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| 6 | #include <linux/lsm_hooks.h> |
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| 7 | #include <linux/bpf_lsm.h> |
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| 8 | #include <uapi/linux/lsm.h> |
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| 9 | |
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| 10 | static struct security_hook_list bpf_lsm_hooks[] __ro_after_init = { |
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| 11 | #define LSM_HOOK(RET, DEFAULT, NAME, ...) \ |
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| 12 | LSM_HOOK_INIT(NAME, bpf_lsm_##NAME), |
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| 13 | #include <linux/lsm_hook_defs.h> |
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| 14 | #undef LSM_HOOK |
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| 15 | LSM_HOOK_INIT(inode_free_security, bpf_inode_storage_free), |
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| 16 | LSM_HOOK_INIT(task_free, bpf_task_storage_free), |
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| 17 | }; |
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| 18 | |
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| 19 | static const struct lsm_id bpf_lsmid = { |
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| 20 | .name = "bpf" , |
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| 21 | .id = LSM_ID_BPF, |
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| 22 | }; |
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| 23 | |
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| 24 | static int __init bpf_lsm_init(void) |
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| 25 | { |
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| 26 | security_add_hooks(hooks: bpf_lsm_hooks, ARRAY_SIZE(bpf_lsm_hooks), |
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| 27 | lsmid: &bpf_lsmid); |
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| 28 | pr_info("LSM support for eBPF active\n" ); |
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| 29 | return 0; |
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| 30 | } |
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| 31 | |
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| 32 | struct lsm_blob_sizes bpf_lsm_blob_sizes __ro_after_init = { |
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| 33 | .lbs_inode = sizeof(struct bpf_storage_blob), |
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| 34 | .lbs_task = sizeof(struct bpf_storage_blob), |
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| 35 | }; |
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| 36 | |
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| 37 | DEFINE_LSM(bpf) = { |
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| 38 | .name = "bpf" , |
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| 39 | .init = bpf_lsm_init, |
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| 40 | .blobs = &bpf_lsm_blob_sizes |
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| 41 | }; |
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| 42 | |
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