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| #ifndef CSUM_FILE_H | |
| #define CSUM_FILE_H | |
| #include "hash.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; | |
| size_t buffer_len; | |
| unsigned char *buffer; | |
| unsigned char *check_buffer; | |
| }; | |
| /* Checkpoint */ | |
| struct hashfile_checkpoint { | |
| off_t offset; | |
| git_hash_ctx ctx; | |
| }; | |
| void hashfile_checkpoint(struct hashfile *, struct hashfile_checkpoint *); | |
| int hashfile_truncate(struct hashfile *, struct hashfile_checkpoint *); | |
| /* finalize_hashfile flags */ | |
| #define CSUM_CLOSE 1 | |
| #define CSUM_FSYNC 2 | |
| #define CSUM_HASH_IN_STREAM 4 | |
| struct hashfile *hashfd(int fd, const char *name); | |
| struct hashfile *hashfd_check(const char *name); | |
| struct hashfile *hashfd_throughput(int fd, const char *name, struct progress *tp); | |
| int finalize_hashfile(struct hashfile *, unsigned char *, unsigned int); | |
| void hashwrite(struct hashfile *, const void *, unsigned int); | |
| void hashflush(struct hashfile *f); | |
| void crc32_begin(struct hashfile *); | |
| uint32_t crc32_end(struct hashfile *); | |
| /* Verify checksum validity while reading. Returns non-zero on success. */ | |
| int hashfile_checksum_valid(const unsigned char *data, size_t len); | |
| /* | |
| * Returns the total number of bytes fed to the hashfile so far (including ones | |
| * that have not been written out to the descriptor yet). | |
| */ | |
| static inline off_t hashfile_total(struct hashfile *f) | |
| { | |
| return f->total + f->offset; | |
| } | |
| 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)); | |
| } | |
| static inline size_t hashwrite_be64(struct hashfile *f, uint64_t data) | |
| { | |
| data = htonll(data); | |
| hashwrite(f, &data, sizeof(data)); | |
| return sizeof(data); | |
| } | |
| #endif |