1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2
3 /*
4 * Copyright (C) 2020 Google LLC.
5 */
6
7 #ifndef _LINUX_BPF_LSM_H
8 #define _LINUX_BPF_LSM_H
9
10 #include <linux/sched.h>
11 #include <linux/bpf.h>
12 #include <linux/bpf_verifier.h>
13 #include <linux/lsm_hooks.h>
14
15 #ifdef CONFIG_BPF_LSM
16
17 #define LSM_HOOK(RET, DEFAULT, NAME, ...) \
18 RET bpf_lsm_##NAME(__VA_ARGS__);
19 #include <linux/lsm_hook_defs.h>
20 #undef LSM_HOOK
21
22 struct bpf_storage_blob {
23 struct bpf_local_storage __rcu *storag
24 };
25
26 extern struct lsm_blob_sizes bpf_lsm_blob_size
27
28 int bpf_lsm_verify_prog(struct bpf_verifier_lo
29 const struct bpf_prog
30
31 bool bpf_lsm_is_sleepable_hook(u32 btf_id);
32 bool bpf_lsm_is_trusted(const struct bpf_prog
33
34 static inline struct bpf_storage_blob *bpf_ino
35 const struct inode *inode)
36 {
37 if (unlikely(!inode->i_security))
38 return NULL;
39
40 return inode->i_security + bpf_lsm_blo
41 }
42
43 extern const struct bpf_func_proto bpf_inode_s
44 extern const struct bpf_func_proto bpf_inode_s
45 void bpf_inode_storage_free(struct inode *inod
46
47 void bpf_lsm_find_cgroup_shim(const struct bpf
48
49 int bpf_lsm_get_retval_range(const struct bpf_
50 struct bpf_retval
51 #else /* !CONFIG_BPF_LSM */
52
53 static inline bool bpf_lsm_is_sleepable_hook(u
54 {
55 return false;
56 }
57
58 static inline bool bpf_lsm_is_trusted(const st
59 {
60 return false;
61 }
62
63 static inline int bpf_lsm_verify_prog(struct b
64 const st
65 {
66 return -EOPNOTSUPP;
67 }
68
69 static inline struct bpf_storage_blob *bpf_ino
70 const struct inode *inode)
71 {
72 return NULL;
73 }
74
75 static inline void bpf_inode_storage_free(stru
76 {
77 }
78
79 static inline void bpf_lsm_find_cgroup_shim(co
80 bpf
81 {
82 }
83
84 static inline int bpf_lsm_get_retval_range(con
85 str
86 {
87 return -EOPNOTSUPP;
88 }
89 #endif /* CONFIG_BPF_LSM */
90
91 #endif /* _LINUX_BPF_LSM_H */
92
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