1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Creating audit records for mapped devices.
4 *
5 * Copyright (C) 2021 Fraunhofer AISEC. All rights reserved.
6 *
7 * Authors: Michael Wei�� <michael.weiss@aisec.fraunhofer.de>
8 */
9
10#ifndef DM_AUDIT_H
11#define DM_AUDIT_H
12
13#include <linux/device-mapper.h>
14#include <linux/audit.h>
15
16#ifdef CONFIG_DM_AUDIT
17void dm_audit_log_bio(const char *dm_msg_prefix, const char *op,
18		      struct bio *bio, sector_t sector, int result);
19
20/*
21 * dm_audit_log_ti() is not intended to be used directly in dm modules,
22 * the wrapper functions below should be called by dm modules instead.
23 */
24void dm_audit_log_ti(int audit_type, const char *dm_msg_prefix, const char *op,
25		     struct dm_target *ti, int result);
26
27static inline void dm_audit_log_ctr(const char *dm_msg_prefix,
28				    struct dm_target *ti, int result)
29{
30	dm_audit_log_ti(AUDIT_DM_CTRL, dm_msg_prefix, "ctr", ti, result);
31}
32
33static inline void dm_audit_log_dtr(const char *dm_msg_prefix,
34				    struct dm_target *ti, int result)
35{
36	dm_audit_log_ti(AUDIT_DM_CTRL, dm_msg_prefix, "dtr", ti, result);
37}
38
39static inline void dm_audit_log_target(const char *dm_msg_prefix, const char *op,
40				       struct dm_target *ti, int result)
41{
42	dm_audit_log_ti(AUDIT_DM_EVENT, dm_msg_prefix, op, ti, result);
43}
44#else
45static inline void dm_audit_log_bio(const char *dm_msg_prefix, const char *op,
46				    struct bio *bio, sector_t sector,
47				    int result)
48{
49}
50static inline void dm_audit_log_target(const char *dm_msg_prefix,
51				       const char *op, struct dm_target *ti,
52				       int result)
53{
54}
55static inline void dm_audit_log_ctr(const char *dm_msg_prefix,
56				    struct dm_target *ti, int result)
57{
58}
59
60static inline void dm_audit_log_dtr(const char *dm_msg_prefix,
61				    struct dm_target *ti, int result)
62{
63}
64#endif
65
66#endif
67