14 #include "utils_crypt.h"
15 #include "utils_loop.h"
18 #define SECTOR_SHIFT 9
19 #define SECTOR_SIZE (1 << SECTOR_SHIFT)
20 #define DEFAULT_DISK_ALIGNMENT 1048576 /* 1MiB */
21 #define DEFAULT_MEM_ALIGNMENT 4096
23 /* private struct crypt_options flags */
25 #define CRYPT_FLAG_FREE_DEVICE (1 << 24)
26 #define CRYPT_FLAG_FREE_CIPHER (1 << 25)
28 #define CRYPT_FLAG_PRIVATE_MASK ((unsigned int)-1 << 24)
30 #define at_least(a, b) ({ __typeof__(a) __at_least = (a); (__at_least >= (b))?__at_least:(b); })
39 struct volume_key *crypt_alloc_volume_key(unsigned keylength, const char *key);
40 struct volume_key *crypt_generate_volume_key(struct crypt_device *cd, unsigned keylength);
41 void crypt_free_volume_key(struct volume_key *vk);
43 int crypt_confirm(struct crypt_device *cd, const char *msg);
45 void set_error_va(const char *fmt, va_list va);
46 void set_error(const char *fmt, ...);
47 const char *get_error(void);
49 char *crypt_lookup_dev(const char *dev_id);
50 int crypt_sysfs_check_crypt_segment(const char *device, uint64_t offset, uint64_t size);
52 int sector_size_for_device(const char *device);
53 int device_read_ahead(const char *dev, uint32_t *read_ahead);
54 ssize_t write_blockwise(int fd, void *buf, size_t count);
55 ssize_t read_blockwise(int fd, void *_buf, size_t count);
56 ssize_t write_lseek_blockwise(int fd, char *buf, size_t count, off_t offset);
57 int device_ready(struct crypt_device *cd, const char *device, int mode);
59 enum devcheck { DEV_OK = 0, DEV_EXCL = 1, DEV_SHARED = 2 };
60 int device_check_and_adjust(struct crypt_device *cd,
62 enum devcheck device_check,
66 int wipe_device_header(const char *device, int sectors);
68 void logger(struct crypt_device *cd, int class, const char *file, int line, const char *format, ...);
69 #define log_dbg(x...) logger(NULL, CRYPT_LOG_DEBUG, __FILE__, __LINE__, x)
70 #define log_std(c, x...) logger(c, CRYPT_LOG_NORMAL, __FILE__, __LINE__, x)
71 #define log_verbose(c, x...) logger(c, CRYPT_LOG_VERBOSE, __FILE__, __LINE__, x)
72 #define log_err(c, x...) do { \
73 logger(c, CRYPT_LOG_ERROR, __FILE__, __LINE__, x); \
74 set_error(x); } while(0)
76 int crypt_get_debug_level(void);
77 void debug_processes_using_device(const char *name);
79 int crypt_memlock_inc(struct crypt_device *ctx);
80 int crypt_memlock_dec(struct crypt_device *ctx);
82 void get_topology_alignment(const char *device,
83 unsigned long *required_alignment, /* bytes */
84 unsigned long *alignment_offset, /* bytes */
85 unsigned long default_alignment);
87 enum { CRYPT_RND_NORMAL = 0, CRYPT_RND_KEY = 1 };
88 int crypt_random_init(struct crypt_device *ctx);
89 int crypt_random_get(struct crypt_device *ctx, char *buf, size_t len, int quality);
90 void crypt_random_exit(void);
91 int crypt_random_default_key_rng(void);
93 int crypt_plain_hash(struct crypt_device *ctx,
94 const char *hash_name,
95 char *key, size_t key_size,
96 const char *passphrase, size_t passphrase_size);
97 int PLAIN_activate(struct crypt_device *cd,
99 struct volume_key *vk,
104 #endif /* INTERNAL_H */