// SPDX-License-Identifier: GPL-2.0-or-later

/*

 * libcryptsetup - cryptsetup library internal

 *

 * Copyright (C) 2004 Jana Saout <jana@saout.de>

 * Copyright (C) 2004-2007 Clemens Fruhwirth <clemens@endorphin.org>

 * Copyright (C) 2009-2025 Red Hat, Inc. All rights reserved.

 * Copyright (C) 2009-2025 Milan Broz

 */

#ifndef INTERNAL_H

#define INTERNAL_H

#include <stdint.h>

#include <stdarg.h>

#include <stdbool.h>

#include <stdlib.h>

#include <unistd.h>

#include <inttypes.h>

#include <fcntl.h>

#include <assert.h>

#include "nls.h"

#include "bitops.h"

#include "utils_blkid.h"

#include "utils_crypt.h"

#include "utils_loop.h"

#include "utils_dm.h"

#include "utils_keyring.h"

#include "utils_io.h"

#include "crypto_backend/crypto_backend.h"

#include "libcryptsetup.h"

#include "libcryptsetup_macros.h"

#include "libcryptsetup_symver.h"

#define LOG_MAX_LEN   4096

#define MAX_DM_DEPS   32

#define CRYPT_SUBDEV           "SUBDEV" /* prefix for sublayered devices underneath public crypt types */

#define CRYPT_LUKS2_HW_OPAL    "LUKS2-OPAL" /* dm uuid prefix used for any HW OPAL enabled LUKS2 device */

#ifndef O_CLOEXEC

#define O_CLOEXEC 0

#endif

struct crypt_device;

struct luks2_reencrypt;

struct volume_key;

typedef enum {

  KEY_QUALITY_KEY = 0,

  KEY_QUALITY_NORMAL,

  KEY_QUALITY_EMPTY

} key_quality_info;

struct volume_key *crypt_alloc_volume_key(size_t keylength, const char *key);

struct volume_key *crypt_alloc_volume_key_by_safe_alloc(void **safe_alloc);

struct volume_key *crypt_generate_volume_key(struct crypt_device *cd, size_t keylength,

               key_quality_info quality);

void crypt_free_volume_key(struct volume_key *vk);

const char *crypt_volume_key_get_key(const struct volume_key *vk);

size_t crypt_volume_key_length(const struct volume_key *vk);

int crypt_volume_key_set_description(struct volume_key *key,

             const char *key_description, key_type_t keyring_key_type);

int crypt_volume_key_set_description_by_name(struct volume_key *vk, const char *key_name);

key_type_t crypt_volume_key_kernel_key_type(const struct volume_key *vk);

const char *crypt_volume_key_description(const struct volume_key *vk);

void crypt_volume_key_set_id(struct volume_key *vk, int id);

int crypt_volume_key_get_id(const struct volume_key *vk);

void crypt_volume_key_add_next(struct volume_key **vks, struct volume_key *vk);

struct volume_key *crypt_volume_key_next(struct volume_key *vk);

struct volume_key *crypt_volume_key_by_id(struct volume_key *vk, int id);

void crypt_volume_key_pass_safe_alloc(struct volume_key *vk, void **safe_alloc);

bool crypt_volume_key_is_set(const struct volume_key *vk);

bool crypt_volume_key_upload_kernel_key(struct volume_key *vk);

void crypt_volume_key_drop_uploaded_kernel_key(struct crypt_device *cd, struct volume_key *vk);

void crypt_volume_key_drop_kernel_key(struct crypt_device *cd, struct volume_key *vk);

struct crypt_pbkdf_type *crypt_get_pbkdf(struct crypt_device *cd);

int init_pbkdf_type(struct crypt_device *cd,

        const struct crypt_pbkdf_type *pbkdf,

        const char *dev_type);

int verify_pbkdf_params(struct crypt_device *cd,

      const struct crypt_pbkdf_type *pbkdf);

int crypt_benchmark_pbkdf_internal(struct crypt_device *cd,

           struct crypt_pbkdf_type *pbkdf,

           size_t volume_key_size);

const char *crypt_get_cipher_spec(struct crypt_device *cd);

uint32_t pbkdf_adjusted_phys_memory_kb(void);

/* Device backend */

struct device;

int device_alloc(struct crypt_device *cd, struct device **device, const char *path);

int device_alloc_no_check(struct device **device, const char *path);

void device_close(struct crypt_device *cd, struct device *device);

void device_free(struct crypt_device *cd, struct device *device);

const char *device_path(const struct device *device);

const char *device_block_path(const struct device *device);

void device_topology_alignment(struct crypt_device *cd,

             struct device *device,

             unsigned long *required_alignment, /* bytes */

             unsigned long *alignment_offset,   /* bytes */

             unsigned long default_alignment);

size_t device_block_size(struct crypt_device *cd, struct device *device);

int device_read_ahead(struct device *device, uint32_t *read_ahead);

int device_size(struct device *device, uint64_t *size);

int device_open(struct crypt_device *cd, struct device *device, int flags);

int device_open_excl(struct crypt_device *cd, struct device *device, int flags);

void device_release_excl(struct crypt_device *cd, struct device *device);

void device_disable_direct_io(struct device *device);

int device_is_identical(struct device *device1, struct device *device2);

int device_is_rotational(struct device *device);

int device_is_dax(struct device *device);

int device_is_zoned(struct device *device);

int device_is_nop_dif(struct device *device, uint32_t *tag_size);

size_t device_alignment(struct device *device);

int device_direct_io(const struct device *device);

int device_fallocate(struct device *device, uint64_t size);

void device_sync(struct crypt_device *cd, struct device *device);

int device_check_size(struct crypt_device *cd,

          struct device *device,

          uint64_t req_offset, int falloc);

void device_set_block_size(struct device *device, size_t size);

size_t device_optimal_encryption_sector_size(struct crypt_device *cd, struct device *device);

int device_open_locked(struct crypt_device *cd, struct device *device, int flags);

int device_read_lock(struct crypt_device *cd, struct device *device);

int device_write_lock(struct crypt_device *cd, struct device *device);

void device_read_unlock(struct crypt_device *cd, struct device *device);

void device_write_unlock(struct crypt_device *cd, struct device *device);

bool device_is_locked(struct device *device);

enum devcheck { DEV_OK = 0, DEV_EXCL = 1 };

int device_check_access(struct crypt_device *cd,

      struct device *device,

      enum devcheck device_check);

int device_block_adjust(struct crypt_device *cd,

      struct device *device,

      enum devcheck device_check,

      uint64_t device_offset,

      uint64_t *size,

      uint32_t *flags);

size_t size_round_up(size_t size, size_t block);

int create_or_reload_device(struct crypt_device *cd, const char *name,

         const char *type, struct crypt_dm_active_device *dmd);

int create_or_reload_device_with_integrity(struct crypt_device *cd, const char *name,

         const char *type, struct crypt_dm_active_device *dmd,

         struct crypt_dm_active_device *dmdi);

/* Receive backend devices from context helpers */

struct device *crypt_metadata_device(struct crypt_device *cd);

struct device *crypt_data_device(struct crypt_device *cd);

uint64_t crypt_get_metadata_size_bytes(struct crypt_device *cd);

uint64_t crypt_get_keyslots_size_bytes(struct crypt_device *cd);

uint64_t crypt_get_data_offset_sectors(struct crypt_device *cd);

int crypt_opal_supported(struct crypt_device *cd, struct device *opal_device);

int crypt_confirm(struct crypt_device *cd, const char *msg);

char *crypt_lookup_dev(const char *dev_id);

int crypt_dev_is_rotational(int major, int minor);

int crypt_dev_is_dax(int major, int minor);

int crypt_dev_is_zoned(int major, int minor);

int crypt_dev_is_nop_dif(int major, int minor, uint32_t *tag_size);

int crypt_dev_is_partition(const char *dev_path);

char *crypt_get_partition_device(const char *dev_path, uint64_t offset, uint64_t size);

int crypt_dev_get_partition_number(const char *dev_path);

char *crypt_get_base_device(const char *dev_path);

uint64_t crypt_dev_partition_offset(const char *dev_path);

int lookup_by_disk_id(const char *dm_uuid);

int lookup_by_sysfs_uuid_field(const char *dm_uuid);

size_t crypt_getpagesize(void);

unsigned crypt_cpusonline(void);

uint64_t crypt_getphysmemory_kb(void);

uint64_t crypt_getphysmemoryfree_kb(void);

bool crypt_swapavailable(void);

int init_crypto(struct crypt_device *ctx);

#define log_dbg(c, x...) crypt_logf(c, CRYPT_LOG_DEBUG, x)

#define log_std(c, x...) crypt_logf(c, CRYPT_LOG_NORMAL, x)

#define log_verbose(c, x...) crypt_logf(c, CRYPT_LOG_VERBOSE, x)

#define log_err(c, x...) crypt_logf(c, CRYPT_LOG_ERROR, x)

int crypt_get_debug_level(void);

void crypt_process_priority(struct crypt_device *cd, int *priority, bool raise);

int crypt_metadata_locking_enabled(void);

int crypt_random_init(struct crypt_device *ctx);

int crypt_random_get(struct crypt_device *ctx, char *buf, size_t len, int quality);

void crypt_random_exit(void);

int crypt_random_default_key_rng(void);

int crypt_plain_hash(struct crypt_device *cd,

         const char *hash_name,

         char *key, size_t key_size,

         const char *passphrase, size_t passphrase_size);

int PLAIN_activate(struct crypt_device *cd,

         const char *name,

         struct volume_key *vk,

         uint64_t size,

         uint32_t flags);

void *crypt_get_hdr(struct crypt_device *cd, const char *type);

void crypt_set_luks2_reencrypt(struct crypt_device *cd, struct luks2_reencrypt *rh);

struct luks2_reencrypt *crypt_get_luks2_reencrypt(struct crypt_device *cd);

int onlyLUKS2(struct crypt_device *cd);

int onlyLUKS2reencrypt(struct crypt_device *cd);

int crypt_wipe_device(struct crypt_device *cd,

  struct device *device,

  crypt_wipe_pattern pattern,

  uint64_t offset,

  uint64_t length,

  size_t wipe_block_size,

  int (*progress)(uint64_t size, uint64_t offset, void *usrptr),

  void *usrptr);

/* Internal integrity helpers */

const char *crypt_get_integrity(struct crypt_device *cd);

int crypt_get_integrity_key_size(struct crypt_device *cd, bool dm_compat);

int crypt_get_integrity_tag_size(struct crypt_device *cd);

int crypt_key_in_keyring(struct crypt_device *cd);

void crypt_set_key_in_keyring(struct crypt_device *cd, unsigned key_in_keyring);

int crypt_volume_key_load_in_keyring(struct crypt_device *cd, struct volume_key *vk);

int crypt_keyring_get_user_key(struct crypt_device *cd,

    const char *key_description,

    char **key,

    size_t *key_size);

int crypt_keyring_get_key_by_name(struct crypt_device *cd,

    const char *key_description,

    char **key,

    size_t *key_size);

int crypt_keyring_get_keysize_by_name(struct crypt_device *cd,

    const char *key_description,

    size_t *r_key_size);

int crypt_use_keyring_for_vk(struct crypt_device *cd);

void crypt_unlink_key_from_thread_keyring(struct crypt_device *cd,

    key_serial_t key_id);

void crypt_unlink_key_by_description_from_thread_keyring(struct crypt_device *cd,

    const char *key_description,

    key_type_t ktype);

void crypt_drop_uploaded_keyring_key(struct crypt_device *cd, struct volume_key *vks);

static inline uint64_t compact_version(uint16_t major, uint16_t minor, uint16_t patch, uint16_t release)

{

  return (uint64_t)release | ((uint64_t)patch << 16) | ((uint64_t)minor << 32) | ((uint64_t)major << 48);

}

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Unexecuted instantiation: luks2_luks1_convert.c:compact_version

Unexecuted instantiation: luks2_digest.c:compact_version

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int kernel_version(uint64_t *kversion);

int crypt_serialize_lock(struct crypt_device *cd);

void crypt_serialize_unlock(struct crypt_device *cd);

bool crypt_string_in(const char *str, char **list, size_t list_size);

int crypt_strcmp(const char *a, const char *b);

int crypt_compare_dm_devices(struct crypt_device *cd,

             const struct crypt_dm_active_device *src,

             const struct crypt_dm_active_device *tgt);

static inline void *crypt_zalloc(size_t size) { return calloc(1, size); }

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static inline void *crypt_zalloc(size_t size) { return calloc(1, size); }

Unexecuted instantiation: utils.c:crypt_zalloc

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static inline bool uint64_mult_overflow(uint64_t *u, uint64_t b, size_t size)

{

  *u = (uint64_t)b * size;

  if (size == 0)

    return true;

  if ((uint64_t)(*u / size) != b)

    return true;

  return false;

}

Unexecuted instantiation: setup.c:uint64_mult_overflow

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#define KEY_NOT_VERIFIED -2

#define KEY_EXTERNAL_VERIFICATION -1

#define KEY_VERIFIED 0

size_t crypt_safe_alloc_size(const void *data);

#endif /* INTERNAL_H */