Files
cryptsetup/lib/internal.h
Milan Broz d44d07c9eb * Add --shared option for creating non-overlapping crypt segments.
* Add shared flag to libcryptsetup api.
* Fix plain crypt format parameters to include size option (API change).

git-svn-id: https://cryptsetup.googlecode.com/svn/trunk@559 36d66b0a-2a48-0410-832c-cd162a569da5
2011-07-01 16:38:58 +00:00

99 lines
3.2 KiB
C

#ifndef INTERNAL_H
#define INTERNAL_H
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdint.h>
#include <stdarg.h>
#include <unistd.h>
#include <inttypes.h>
#include "nls.h"
#include "utils_crypt.h"
#include "utils_loop.h"
#include "utils_dm.h"
#define SECTOR_SHIFT 9
#define SECTOR_SIZE (1 << SECTOR_SHIFT)
#define DEFAULT_DISK_ALIGNMENT 1048576 /* 1MiB */
#define DEFAULT_MEM_ALIGNMENT 4096
/* private struct crypt_options flags */
#define CRYPT_FLAG_FREE_DEVICE (1 << 24)
#define CRYPT_FLAG_FREE_CIPHER (1 << 25)
#define CRYPT_FLAG_PRIVATE_MASK ((unsigned int)-1 << 24)
#define at_least(a, b) ({ __typeof__(a) __at_least = (a); (__at_least >= (b))?__at_least:(b); })
struct crypt_device;
struct volume_key {
size_t keylength;
char key[];
};
struct volume_key *crypt_alloc_volume_key(unsigned keylength, const char *key);
struct volume_key *crypt_generate_volume_key(struct crypt_device *cd, unsigned keylength);
void crypt_free_volume_key(struct volume_key *vk);
int crypt_confirm(struct crypt_device *cd, const char *msg);
void set_error_va(const char *fmt, va_list va);
void set_error(const char *fmt, ...);
const char *get_error(void);
char *crypt_lookup_dev(const char *dev_id);
int crypt_sysfs_check_crypt_segment(const char *device, uint64_t offset, uint64_t size);
int sector_size_for_device(const char *device);
int device_read_ahead(const char *dev, uint32_t *read_ahead);
ssize_t write_blockwise(int fd, void *buf, size_t count);
ssize_t read_blockwise(int fd, void *_buf, size_t count);
ssize_t write_lseek_blockwise(int fd, char *buf, size_t count, off_t offset);
int device_ready(struct crypt_device *cd, const char *device, int mode);
enum devcheck { DEV_OK = 0, DEV_EXCL = 1, DEV_SHARED = 2 };
int device_check_and_adjust(struct crypt_device *cd,
const char *device,
enum devcheck device_check,
uint64_t *size,
uint64_t *offset,
int *read_only);
int wipe_device_header(const char *device, int sectors);
void logger(struct crypt_device *cd, int class, const char *file, int line, const char *format, ...);
#define log_dbg(x...) logger(NULL, CRYPT_LOG_DEBUG, __FILE__, __LINE__, x)
#define log_std(c, x...) logger(c, CRYPT_LOG_NORMAL, __FILE__, __LINE__, x)
#define log_verbose(c, x...) logger(c, CRYPT_LOG_VERBOSE, __FILE__, __LINE__, x)
#define log_err(c, x...) do { \
logger(c, CRYPT_LOG_ERROR, __FILE__, __LINE__, x); \
set_error(x); } while(0)
int crypt_get_debug_level(void);
void debug_processes_using_device(const char *name);
int crypt_memlock_inc(struct crypt_device *ctx);
int crypt_memlock_dec(struct crypt_device *ctx);
void get_topology_alignment(const char *device,
unsigned long *required_alignment, /* bytes */
unsigned long *alignment_offset, /* bytes */
unsigned long default_alignment);
enum { CRYPT_RND_NORMAL = 0, CRYPT_RND_KEY = 1 };
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 *ctx,
const char *hash_name,
char *key, size_t key_size,
const char *passphrase, size_t passphrase_size);
#endif /* INTERNAL_H */