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78 lines
1.9 KiB
78 lines
1.9 KiB
#ifndef CSUM_FILE_H |
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#define CSUM_FILE_H |
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#include "cache.h" |
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#include "hash.h" |
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struct progress; |
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/* A SHA1-protected file */ |
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struct hashfile { |
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int fd; |
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int check_fd; |
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unsigned int offset; |
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git_hash_ctx ctx; |
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off_t total; |
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struct progress *tp; |
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const char *name; |
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int do_crc; |
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uint32_t crc32; |
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size_t buffer_len; |
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unsigned char *buffer; |
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unsigned char *check_buffer; |
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}; |
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/* Checkpoint */ |
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struct hashfile_checkpoint { |
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off_t offset; |
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git_hash_ctx ctx; |
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}; |
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void hashfile_checkpoint(struct hashfile *, struct hashfile_checkpoint *); |
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int hashfile_truncate(struct hashfile *, struct hashfile_checkpoint *); |
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/* finalize_hashfile flags */ |
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#define CSUM_CLOSE 1 |
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#define CSUM_FSYNC 2 |
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#define CSUM_HASH_IN_STREAM 4 |
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struct hashfile *hashfd(int fd, const char *name); |
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struct hashfile *hashfd_check(const char *name); |
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struct hashfile *hashfd_throughput(int fd, const char *name, struct progress *tp); |
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int finalize_hashfile(struct hashfile *, unsigned char *, enum fsync_component, unsigned int); |
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void hashwrite(struct hashfile *, const void *, unsigned int); |
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void hashflush(struct hashfile *f); |
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void crc32_begin(struct hashfile *); |
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uint32_t crc32_end(struct hashfile *); |
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/* Verify checksum validity while reading. Returns non-zero on success. */ |
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int hashfile_checksum_valid(const unsigned char *data, size_t len); |
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/* |
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* Returns the total number of bytes fed to the hashfile so far (including ones |
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* that have not been written out to the descriptor yet). |
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*/ |
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static inline off_t hashfile_total(struct hashfile *f) |
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{ |
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return f->total + f->offset; |
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} |
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static inline void hashwrite_u8(struct hashfile *f, uint8_t data) |
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{ |
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hashwrite(f, &data, sizeof(data)); |
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} |
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static inline void hashwrite_be32(struct hashfile *f, uint32_t data) |
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{ |
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data = htonl(data); |
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hashwrite(f, &data, sizeof(data)); |
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} |
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static inline size_t hashwrite_be64(struct hashfile *f, uint64_t data) |
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{ |
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data = htonll(data); |
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hashwrite(f, &data, sizeof(data)); |
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return sizeof(data); |
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} |
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#endif
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