1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * Copyright (C) 2019 Microsoft Corporation. |
4 | * |
5 | * Author: Jaskaran Singh Khurana <jaskarankhurana@linux.microsoft.com> |
6 | * |
7 | */ |
8 | #ifndef DM_VERITY_SIG_VERIFICATION_H |
9 | #define DM_VERITY_SIG_VERIFICATION_H |
10 | |
11 | #define DM_VERITY_ROOT_HASH_VERIFICATION "DM Verity Sig Verification" |
12 | #define DM_VERITY_ROOT_HASH_VERIFICATION_OPT_SIG_KEY "root_hash_sig_key_desc" |
13 | |
14 | struct dm_verity_sig_opts { |
15 | unsigned int sig_size; |
16 | u8 *sig; |
17 | }; |
18 | |
19 | #ifdef CONFIG_DM_VERITY_VERIFY_ROOTHASH_SIG |
20 | |
21 | #define DM_VERITY_ROOT_HASH_VERIFICATION_OPTS 2 |
22 | |
23 | int verity_verify_root_hash(const void *data, size_t data_len, |
24 | const void *sig_data, size_t sig_len); |
25 | bool verity_verify_is_sig_opt_arg(const char *arg_name); |
26 | |
27 | int verity_verify_sig_parse_opt_args(struct dm_arg_set *as, struct dm_verity *v, |
28 | struct dm_verity_sig_opts *sig_opts, |
29 | unsigned int *argc, const char *arg_name); |
30 | |
31 | void verity_verify_sig_opts_cleanup(struct dm_verity_sig_opts *sig_opts); |
32 | |
33 | #else |
34 | |
35 | #define DM_VERITY_ROOT_HASH_VERIFICATION_OPTS 0 |
36 | |
37 | static inline int verity_verify_root_hash(const void *data, size_t data_len, |
38 | const void *sig_data, size_t sig_len) |
39 | { |
40 | return 0; |
41 | } |
42 | |
43 | static inline bool verity_verify_is_sig_opt_arg(const char *arg_name) |
44 | { |
45 | return false; |
46 | } |
47 | |
48 | static inline int verity_verify_sig_parse_opt_args(struct dm_arg_set *as, |
49 | struct dm_verity *v, struct dm_verity_sig_opts *sig_opts, |
50 | unsigned int *argc, const char *arg_name) |
51 | { |
52 | return -EINVAL; |
53 | } |
54 | |
55 | static inline void verity_verify_sig_opts_cleanup(struct dm_verity_sig_opts *sig_opts) |
56 | { |
57 | } |
58 | |
59 | #endif /* CONFIG_DM_VERITY_VERIFY_ROOTHASH_SIG */ |
60 | #endif /* DM_VERITY_SIG_VERIFICATION_H */ |
61 | |