drivers/md/dm-audit.h

   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 Weiß <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
  17 void 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  */
  24 void dm_audit_log_ti(int audit_type, const char *dm_msg_prefix, const char *op,
  25                      struct dm_target *ti, int result);
  26
  27 static 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
  33 static 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
  39 static 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
  45 static 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 }
  50 static inline void dm_audit_log_target(const char *dm_msg_prefix,
  51                                        const char *op, struct dm_target *ti,
  52                                        int result)
  53 {
  54 }
  55 static inline void dm_audit_log_ctr(const char *dm_msg_prefix,
  56                                     struct dm_target *ti, int result)
  57 {
  58 }
  59
  60 static 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