projects / thirdparty / util-linux.git / blame
| Commit | Line | Data |
|---|---|---|
| faeb1b64 KZ |
1 | |
| 2 | /* | |
| 3 | * No copyright is claimed. This code is in the public domain; do with | |
| 4 | * it what you wish. | |
| 5 | */ | |
| ee2d371c KZ |
6 | #ifndef UTIL_LINUX_FILEEQ |
| 7 | #define UTIL_LINUX_FILEEQ | |
| 8 | ||
| 9 | #include <stdlib.h> | |
| 10 | #include <stdint.h> | |
| 11 | #include <stdbool.h> | |
| 12 | ||
| 4f5e14fd KZ |
13 | #if defined(__linux__) && defined(HAVE_LINUX_IF_ALG_H) |
| 14 | # define USE_FILEEQ_CRYPTOAPI 1 | |
| 15 | #endif | |
| 16 | ||
| dbb2fb39 | 17 | /* Number of bytes from the beginning of the file we always |
| ee2d371c KZ |
18 | * compare by memcmp() */ |
| 19 | #define UL_FILEEQ_INTROSIZ 32 | |
| 20 | ||
| 21 | struct ul_fileeq_data { | |
| 22 | unsigned char intro[UL_FILEEQ_INTROSIZ]; | |
| 23 | unsigned char *blocks; | |
| 24 | size_t nblocks; | |
| 25 | size_t maxblocks; | |
| 26 | int fd; | |
| 27 | const char *name; | |
| 28 | bool is_eof; | |
| 29 | }; | |
| 30 | ||
| 31 | struct ul_fileeq { | |
| 32 | int fd_api; /* Crypto socket */ | |
| 33 | int fd_cip; /* Cipher handler */ | |
| 34 | ||
| 35 | size_t readsiz; | |
| 36 | uint64_t filesiz; | |
| 37 | uint64_t blocksmax; | |
| 38 | const struct ul_fileeq_method *method; | |
| 39 | ||
| 40 | /* UL_FILEEQ_MEMCMP buffers */ | |
| 41 | unsigned char *buf_a; | |
| 42 | unsigned char *buf_b; | |
| 43 | unsigned char *buf_last; | |
| 44 | }; | |
| 45 | ||
| 46 | extern int ul_fileeq_init(struct ul_fileeq *eq, const char *method); | |
| 47 | extern void ul_fileeq_deinit(struct ul_fileeq *eq); | |
| 48 | ||
| 49 | ||
| 50 | extern int ul_fileeq_data_associated(struct ul_fileeq_data *data); | |
| 51 | extern void ul_fileeq_data_close_file(struct ul_fileeq_data *data); | |
| 52 | extern void ul_fileeq_data_init(struct ul_fileeq_data *data); | |
| 53 | extern void ul_fileeq_data_deinit(struct ul_fileeq_data *data); | |
| 54 | extern void ul_fileeq_data_set_file(struct ul_fileeq_data *data, | |
| 55 | const char *name); | |
| 56 | extern size_t ul_fileeq_set_size(struct ul_fileeq *eq, uint64_t filesiz, | |
| 57 | size_t readsiz, size_t memsiz); | |
| 58 | ||
| 59 | extern int ul_fileeq(struct ul_fileeq *eq, | |
| 60 | struct ul_fileeq_data *a, struct ul_fileeq_data *b); | |
| 61 | ||
| 62 | #endif /* UTIL_LINUX_FILEEQ */ |