linux/drivers/md/dm-ima.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2021 Microsoft Corporation
 *
 * Author: Tushar Sugandhi <[email protected]>
 *
 * Header file for device mapper IMA measurements.
 */

#ifndef DM_IMA_H
#define DM_IMA_H

#define DM_IMA_MEASUREMENT_BUF_LEN …
#define DM_IMA_DEVICE_BUF_LEN …
#define DM_IMA_TARGET_METADATA_BUF_LEN …
#define DM_IMA_TARGET_DATA_BUF_LEN …
#define DM_IMA_DEVICE_CAPACITY_BUF_LEN …
#define DM_IMA_TABLE_HASH_ALG …

#define __dm_ima_stringify(s) …
#define __dm_ima_str(s) …

#define DM_IMA_VERSION_STR …

#ifdef CONFIG_IMA

struct dm_ima_device_table_metadata { … };

/*
 * This structure contains device metadata, and table hash for
 * active and inactive tables for ima measurements.
 */
struct dm_ima_measurements { … };

void dm_ima_reset_data(struct mapped_device *md);
void dm_ima_measure_on_table_load(struct dm_table *table, unsigned int status_flags);
void dm_ima_measure_on_device_resume(struct mapped_device *md, bool swap);
void dm_ima_measure_on_device_remove(struct mapped_device *md, bool remove_all);
void dm_ima_measure_on_table_clear(struct mapped_device *md, bool new_map);
void dm_ima_measure_on_device_rename(struct mapped_device *md);

#else

static inline void dm_ima_reset_data(struct mapped_device *md) {}
static inline void dm_ima_measure_on_table_load(struct dm_table *table, unsigned int status_flags) {}
static inline void dm_ima_measure_on_device_resume(struct mapped_device *md, bool swap) {}
static inline void dm_ima_measure_on_device_remove(struct mapped_device *md, bool remove_all) {}
static inline void dm_ima_measure_on_table_clear(struct mapped_device *md, bool new_map) {}
static inline void dm_ima_measure_on_device_rename(struct mapped_device *md) {}

#endif /* CONFIG_IMA */

#endif /* DM_IMA_H */