| #ifndef CSUM_FILE_H |
| #define CSUM_FILE_H |
| |
| struct progress; |
| |
| /* A SHA1-protected file */ |
| struct hashfile { |
| int fd; |
| int check_fd; |
| unsigned int offset; |
| git_hash_ctx ctx; |
| off_t total; |
| struct progress *tp; |
| const char *name; |
| int do_crc; |
| uint32_t crc32; |
| unsigned char buffer[8192]; |
| }; |
| |
| /* Checkpoint */ |
| struct hashfile_checkpoint { |
| off_t offset; |
| git_hash_ctx ctx; |
| }; |
| |
| extern void hashfile_checkpoint(struct hashfile *, struct hashfile_checkpoint *); |
| extern int hashfile_truncate(struct hashfile *, struct hashfile_checkpoint *); |
| |
| /* hashclose flags */ |
| #define CSUM_CLOSE 1 |
| #define CSUM_FSYNC 2 |
| |
| extern struct hashfile *hashfd(int fd, const char *name); |
| extern struct hashfile *hashfd_check(const char *name); |
| extern struct hashfile *hashfd_throughput(int fd, const char *name, struct progress *tp); |
| extern int hashclose(struct hashfile *, unsigned char *, unsigned int); |
| extern void hashwrite(struct hashfile *, const void *, unsigned int); |
| extern void hashflush(struct hashfile *f); |
| extern void crc32_begin(struct hashfile *); |
| extern uint32_t crc32_end(struct hashfile *); |
| |
| static inline void hashwrite_u8(struct hashfile *f, uint8_t data) |
| { |
| hashwrite(f, &data, sizeof(data)); |
| } |
| |
| static inline void hashwrite_be32(struct hashfile *f, uint32_t data) |
| { |
| data = htonl(data); |
| hashwrite(f, &data, sizeof(data)); |
| } |
| |
| #endif |