mirror of
https://gitlab.com/cryptsetup/cryptsetup.git
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d7960b9307
git-svn-id: https://cryptsetup.googlecode.com/svn/trunk@622 36d66b0a-2a48-0410-832c-cd162a569da5
114 lines
3.8 KiB
C
114 lines
3.8 KiB
C
#ifndef INTERNAL_H
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#define INTERNAL_H
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdint.h>
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#include <stdarg.h>
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#include <unistd.h>
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#include <inttypes.h>
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#include "nls.h"
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#include "utils_crypt.h"
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#include "utils_loop.h"
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#include "utils_dm.h"
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/* to silent gcc -Wcast-qual for const cast */
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#define CONST_CAST(x) (x)(uintptr_t)
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#define SECTOR_SHIFT 9
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#define SECTOR_SIZE (1 << SECTOR_SHIFT)
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#define DEFAULT_DISK_ALIGNMENT 1048576 /* 1MiB */
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#define DEFAULT_MEM_ALIGNMENT 4096
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#define at_least(a, b) ({ __typeof__(a) __at_least = (a); (__at_least >= (b))?__at_least:(b); })
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struct crypt_device;
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struct volume_key {
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size_t keylength;
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char key[];
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};
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struct volume_key *crypt_alloc_volume_key(unsigned keylength, const char *key);
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struct volume_key *crypt_generate_volume_key(struct crypt_device *cd, unsigned keylength);
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void crypt_free_volume_key(struct volume_key *vk);
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int crypt_confirm(struct crypt_device *cd, const char *msg);
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char *crypt_lookup_dev(const char *dev_id);
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int crypt_sysfs_check_crypt_segment(const char *device, uint64_t offset, uint64_t size);
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int crypt_sysfs_get_rotational(int major, int minor, int *rotational);
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int sector_size_for_device(const char *device);
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int device_read_ahead(const char *dev, uint32_t *read_ahead);
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ssize_t write_blockwise(int fd, void *buf, size_t count);
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ssize_t read_blockwise(int fd, void *_buf, size_t count);
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ssize_t write_lseek_blockwise(int fd, char *buf, size_t count, off_t offset);
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int device_ready(struct crypt_device *cd, const char *device, int mode);
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int device_size(const char *device, uint64_t *size);
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enum devcheck { DEV_OK = 0, DEV_EXCL = 1, DEV_SHARED = 2 };
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int device_check_and_adjust(struct crypt_device *cd,
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const char *device,
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enum devcheck device_check,
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uint64_t *size,
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uint64_t *offset,
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uint32_t *flags);
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void logger(struct crypt_device *cd, int class, const char *file, int line, const char *format, ...);
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#define log_dbg(x...) logger(NULL, CRYPT_LOG_DEBUG, __FILE__, __LINE__, x)
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#define log_std(c, x...) logger(c, CRYPT_LOG_NORMAL, __FILE__, __LINE__, x)
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#define log_verbose(c, x...) logger(c, CRYPT_LOG_VERBOSE, __FILE__, __LINE__, x)
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#define log_err(c, x...) logger(c, CRYPT_LOG_ERROR, __FILE__, __LINE__, x)
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int crypt_get_debug_level(void);
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void debug_processes_using_device(const char *name);
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int crypt_memlock_inc(struct crypt_device *ctx);
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int crypt_memlock_dec(struct crypt_device *ctx);
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void get_topology_alignment(const char *device,
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unsigned long *required_alignment, /* bytes */
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unsigned long *alignment_offset, /* bytes */
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unsigned long default_alignment);
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enum { CRYPT_RND_NORMAL = 0, CRYPT_RND_KEY = 1 };
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int crypt_random_init(struct crypt_device *ctx);
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int crypt_random_get(struct crypt_device *ctx, char *buf, size_t len, int quality);
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void crypt_random_exit(void);
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int crypt_random_default_key_rng(void);
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int crypt_plain_hash(struct crypt_device *ctx,
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const char *hash_name,
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char *key, size_t key_size,
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const char *passphrase, size_t passphrase_size);
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int PLAIN_activate(struct crypt_device *cd,
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const char *name,
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struct volume_key *vk,
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uint64_t size,
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uint32_t flags);
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/**
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* Different methods used to erase sensitive data concerning
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* either encrypted payload area or master key inside keyslot
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* area
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*/
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typedef enum {
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CRYPT_WIPE_ZERO, /**< overwrite area using zero blocks */
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CRYPT_WIPE_DISK, /**< erase disk (using Gutmann method if it is rotational disk)*/
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CRYPT_WIPE_SSD, /**< erase solid state disk (random write) */
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CRYPT_WIPE_RANDOM /**< overwrite area using some up to now unspecified
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* random algorithm */
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} crypt_wipe_type;
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int crypt_wipe(const char *device,
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uint64_t offset,
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uint64_t sectors,
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crypt_wipe_type type,
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int flags);
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#endif /* INTERNAL_H */
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