1 #ifndef INTERNAL_H 2 #define INTERNAL_H 3 4 #ifdef HAVE_CONFIG_H 5 # include "config.h" 6 #endif 7 8 #include <stdint.h> 9 #include <stdarg.h> 10 #include <unistd.h> 11 #include <inttypes.h> 12 13 #include "nls.h" 14 15 #define SECTOR_SHIFT 9 16 #define SECTOR_SIZE (1 << SECTOR_SHIFT) 17 #define DEFAULT_ALIGNMENT 4096 18 19 #define MAX_TTY_PASSWORD_LEN 512 20 21 /* private struct crypt_options flags */ 22 23 #define CRYPT_FLAG_FREE_DEVICE (1 << 24) 24 #define CRYPT_FLAG_FREE_CIPHER (1 << 25) 25 26 #define CRYPT_FLAG_PRIVATE_MASK ((unsigned int)-1 << 24) 27 28 #define at_least(a, b) ({ __typeof__(a) __at_least = (a); (__at_least >= (b))?__at_least:(b); }) 29 30 struct hash_type { 31 char *name; 32 void *private; 33 int (*fn)(void *data, int size, char *key, 34 int sizep, const char *passphrase); 35 }; 36 37 struct hash_backend { 38 const char *name; 39 struct hash_type * (*get_hashes)(void); 40 void (*free_hashes)(struct hash_type *hashes); 41 }; 42 43 struct device_infos { 44 uint64_t size; 45 int readonly; 46 }; 47 48 struct crypt_device; 49 int crypt_confirm(struct crypt_device *cd, const char *msg); 50 51 void set_error_va(const char *fmt, va_list va); 52 void set_error(const char *fmt, ...); 53 const char *get_error(void); 54 void *safe_alloc(size_t size); 55 void safe_free(void *data); 56 void *safe_realloc(void *data, size_t size); 57 char *safe_strdup(const char *s); 58 void set_debug_level(int level); 59 60 int init_crypto(void); 61 struct hash_backend *get_hash_backend(const char *name); 62 void put_hash_backend(struct hash_backend *backend); 63 int hash(const char *backend_name, const char *hash_name, 64 char *result, size_t size, 65 const char *passphrase, size_t sizep); 66 67 void hexprint(char *d, int n); 68 69 /* Device mapper backend */ 70 const char *dm_get_dir(void); 71 int dm_init(struct crypt_device *context, int check_kernel); 72 void dm_exit(void); 73 int dm_remove_device(const char *name, int force, uint64_t size); 74 int dm_status_device(const char *name); 75 int dm_query_device(const char *name, 76 char **device, 77 uint64_t *size, 78 uint64_t *skip, 79 uint64_t *offset, 80 char **cipher, 81 int *key_size, 82 char **key, 83 int *read_only, 84 int *suspended, 85 char **uuid); 86 int dm_create_device(const char *name, const char *device, const char *cipher, 87 const char *type, const char *uuid, 88 uint64_t size, uint64_t skip, uint64_t offset, 89 size_t key_size, const char *key, 90 int read_only, int reload); 91 int dm_suspend_and_wipe_key(const char *name); 92 int dm_resume_and_reinstate_key(const char *name, 93 size_t key_size, 94 const char *key); 95 96 int sector_size_for_device(const char *device); 97 ssize_t write_blockwise(int fd, const void *buf, size_t count); 98 ssize_t read_blockwise(int fd, void *_buf, size_t count); 99 ssize_t write_lseek_blockwise(int fd, const char *buf, size_t count, off_t offset); 100 int device_ready(struct crypt_device *cd, const char *device, int mode); 101 int get_device_infos(const char *device, struct device_infos *infos, struct crypt_device *cd); 102 int wipe_device_header(const char *device, int sectors); 103 104 void get_key(char *prompt, char **key, unsigned int *passLen, int key_size, 105 const char *key_file, int timeout, int how2verify, 106 struct crypt_device *cd); 107 108 int parse_into_name_and_mode(const char *nameAndMode, char *name, char *mode); 109 110 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) 117 118 int crypt_get_debug_level(void); 119 void debug_processes_using_device(const char *name); 120 121 int crypt_memlock_inc(struct crypt_device *ctx); 122 int crypt_memlock_dec(struct crypt_device *ctx); 123 124 void get_topology_alignment(const char *device, 125 unsigned long *required_alignment, /* bytes */ 126 unsigned long *alignment_offset, /* bytes */ 127 unsigned long default_alignment); 128 129 #endif /* INTERNAL_H */ 130