1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
// SPDX-License-Identifier: LGPL-2.1-or-later
/*
* Generic wrapper for storage functions
* (experimental only)
*
* Copyright (C) 2018-2025 Ondrej Kozina
*/
#ifndef _UTILS_STORAGE_WRAPPERS_H
#define _UTILS_STORAGE_WRAPPERS_H
#include <stdint.h>
#include <sys/types.h>
struct crypt_storage_wrapper;
struct device;
struct volume_key;
struct crypt_device;
#define DISABLE_USPACE (1 << 0)
#define DISABLE_KCAPI (1 << 1)
#define DISABLE_DMCRYPT (1 << 2)
#define OPEN_READONLY (1 << 3)
#define LARGE_IV (1 << 4)
typedef enum {
NONE = 0,
USPACE,
DMCRYPT
} crypt_storage_wrapper_type;
int crypt_storage_wrapper_init(struct crypt_device *cd,
struct crypt_storage_wrapper **cw,
struct device *device,
uint64_t data_offset,
uint64_t iv_start,
int sector_size,
const char *cipher,
struct volume_key *vk,
uint32_t flags);
void crypt_storage_wrapper_destroy(struct crypt_storage_wrapper *cw);
/* !!! when doing 'read' or 'write' all offset values are RELATIVE to data_offset !!! */
ssize_t crypt_storage_wrapper_read(struct crypt_storage_wrapper *cw,
off_t offset, void *buffer, size_t buffer_length);
ssize_t crypt_storage_wrapper_read_decrypt(struct crypt_storage_wrapper *cw,
off_t offset, void *buffer, size_t buffer_length);
ssize_t crypt_storage_wrapper_decrypt(struct crypt_storage_wrapper *cw,
off_t offset, void *buffer, size_t buffer_length);
ssize_t crypt_storage_wrapper_write(struct crypt_storage_wrapper *cw,
off_t offset, void *buffer, size_t buffer_length);
ssize_t crypt_storage_wrapper_encrypt_write(struct crypt_storage_wrapper *cw,
off_t offset, void *buffer, size_t buffer_length);
ssize_t crypt_storage_wrapper_encrypt(struct crypt_storage_wrapper *cw,
off_t offset, void *buffer, size_t buffer_length);
int crypt_storage_wrapper_datasync(const struct crypt_storage_wrapper *cw);
crypt_storage_wrapper_type crypt_storage_wrapper_get_type(const struct crypt_storage_wrapper *cw);
#endif
|
