diff options
Diffstat (limited to 'include/fileeq.h')
| -rw-r--r-- | include/fileeq.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/include/fileeq.h b/include/fileeq.h new file mode 100644 index 0000000..3988ed0 --- /dev/null +++ b/include/fileeq.h @@ -0,0 +1,53 @@ +#ifndef UTIL_LINUX_FILEEQ +#define UTIL_LINUX_FILEEQ + +#include <stdlib.h> +#include <stdint.h> +#include <stdbool.h> + +/* Number of bytes from the beginning of the file we always + * compare by memcmp() */ +#define UL_FILEEQ_INTROSIZ 32 + +struct ul_fileeq_data { + unsigned char intro[UL_FILEEQ_INTROSIZ]; + unsigned char *blocks; + size_t nblocks; + size_t maxblocks; + int fd; + const char *name; + bool is_eof; +}; + +struct ul_fileeq { + int fd_api; /* Crypto socket */ + int fd_cip; /* Cipher handler */ + + size_t readsiz; + uint64_t filesiz; + uint64_t blocksmax; + const struct ul_fileeq_method *method; + + /* UL_FILEEQ_MEMCMP buffers */ + unsigned char *buf_a; + unsigned char *buf_b; + unsigned char *buf_last; +}; + +extern int ul_fileeq_init(struct ul_fileeq *eq, const char *method); +extern void ul_fileeq_deinit(struct ul_fileeq *eq); + + +extern int ul_fileeq_data_associated(struct ul_fileeq_data *data); +extern void ul_fileeq_data_close_file(struct ul_fileeq_data *data); +extern void ul_fileeq_data_init(struct ul_fileeq_data *data); +extern void ul_fileeq_data_deinit(struct ul_fileeq_data *data); +extern void ul_fileeq_data_set_file(struct ul_fileeq_data *data, + const char *name); +extern size_t ul_fileeq_set_size(struct ul_fileeq *eq, uint64_t filesiz, + size_t readsiz, size_t memsiz); + +extern int ul_fileeq(struct ul_fileeq *eq, + struct ul_fileeq_data *a, struct ul_fileeq_data *b); + +#endif /* UTIL_LINUX_FILEEQ */ |