14 #include "utils_crypt.h"
15 #include "utils_loop.h"
17 #define SECTOR_SHIFT 9
18 #define SECTOR_SIZE (1 << SECTOR_SHIFT)
19 #define DEFAULT_DISK_ALIGNMENT 1048576 /* 1MiB */
20 #define DEFAULT_MEM_ALIGNMENT 4096
22 /* private struct crypt_options flags */
24 #define CRYPT_FLAG_FREE_DEVICE (1 << 24)
25 #define CRYPT_FLAG_FREE_CIPHER (1 << 25)
27 #define CRYPT_FLAG_PRIVATE_MASK ((unsigned int)-1 << 24)
29 #define at_least(a, b) ({ __typeof__(a) __at_least = (a); (__at_least >= (b))?__at_least:(b); })
36 int (*fn)(void *data, int size, char *key,
37 int sizep, const char *passphrase);
42 struct hash_type * (*get_hashes)(void);
43 void (*free_hashes)(struct hash_type *hashes);
51 struct volume_key *crypt_alloc_volume_key(unsigned keylength, const char *key);
52 struct volume_key *crypt_generate_volume_key(struct crypt_device *cd, unsigned keylength);
53 void crypt_free_volume_key(struct volume_key *vk);
55 int crypt_confirm(struct crypt_device *cd, const char *msg);
57 void set_error_va(const char *fmt, va_list va);
58 void set_error(const char *fmt, ...);
59 const char *get_error(void);
61 /* Device mapper backend - kernel support flags */
62 #define DM_KEY_WIPE_SUPPORTED (1 << 0) /* key wipe message */
63 #define DM_LMK_SUPPORTED (1 << 1) /* lmk mode */
64 #define DM_SECURE_SUPPORTED (1 << 2) /* wipe (secure) buffer flag */
65 uint32_t dm_flags(void);
67 const char *dm_get_dir(void);
68 int dm_init(struct crypt_device *context, int check_kernel);
70 int dm_remove_device(const char *name, int force, uint64_t size);
71 int dm_status_device(const char *name);
72 int dm_query_device(const char *name,
83 int dm_create_device(const char *name, const char *device, const char *cipher,
84 const char *type, const char *uuid,
85 uint64_t size, uint64_t skip, uint64_t offset,
86 size_t key_size, const char *key,
87 int read_only, int reload);
88 int dm_suspend_and_wipe_key(const char *name);
89 int dm_resume_and_reinstate_key(const char *name,
93 int sector_size_for_device(const char *device);
94 ssize_t write_blockwise(int fd, const void *buf, size_t count);
95 ssize_t read_blockwise(int fd, void *_buf, size_t count);
96 ssize_t write_lseek_blockwise(int fd, const char *buf, size_t count, off_t offset);
97 int device_ready(struct crypt_device *cd, const char *device, int mode);
98 int get_device_infos(const char *device,
102 int device_check_and_adjust(struct crypt_device *cd,
108 int wipe_device_header(const char *device, int sectors);
110 void logger(struct crypt_device *cd, int class, const char *file, int line, const char *format, ...);
111 #define log_dbg(x...) logger(NULL, CRYPT_LOG_DEBUG, __FILE__, __LINE__, x)
112 #define log_std(c, x...) logger(c, CRYPT_LOG_NORMAL, __FILE__, __LINE__, x)
113 #define log_verbose(c, x...) logger(c, CRYPT_LOG_VERBOSE, __FILE__, __LINE__, x)
114 #define log_err(c, x...) do { \
115 logger(c, CRYPT_LOG_ERROR, __FILE__, __LINE__, x); \
116 set_error(x); } while(0)
118 int crypt_get_debug_level(void);
119 void debug_processes_using_device(const char *name);
121 int crypt_memlock_inc(struct crypt_device *ctx);
122 int crypt_memlock_dec(struct crypt_device *ctx);
124 void get_topology_alignment(const char *device,
125 unsigned long *required_alignment, /* bytes */
126 unsigned long *alignment_offset, /* bytes */
127 unsigned long default_alignment);
129 enum { CRYPT_RND_NORMAL = 0, CRYPT_RND_KEY = 1 };
130 int crypt_random_init(struct crypt_device *ctx);
131 int crypt_random_get(struct crypt_device *ctx, char *buf, size_t len, int quality);
132 void crypt_random_exit(void);
133 int crypt_random_default_key_rng(void);
135 int crypt_plain_hash(struct crypt_device *ctx, const char *hash_name,
136 char *result, size_t size,
137 const char *passphrase, size_t sizep);
139 #endif /* INTERNAL_H */