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cfe83216e4
If we want to use a hashfile on the temporary file for a lockfile, then we need finalize_hashfile() to fully write the trailing hash but also keep the file descriptor open. Do this by adding a new CSUM_HASH_IN_STREAM flag along with a functional change that checks this flag before writing the checksum to the stream. This differs from previous behavior since it would be written if either CSUM_CLOSE or CSUM_FSYNC is provided. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
#ifndef CSUM_FILE_H
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#define CSUM_FILE_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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unsigned char buffer[8192];
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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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extern void hashfile_checkpoint(struct hashfile *, struct hashfile_checkpoint *);
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extern 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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extern struct hashfile *hashfd(int fd, const char *name);
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extern struct hashfile *hashfd_check(const char *name);
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extern struct hashfile *hashfd_throughput(int fd, const char *name, struct progress *tp);
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extern int finalize_hashfile(struct hashfile *, unsigned char *, unsigned int);
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extern void hashwrite(struct hashfile *, const void *, unsigned int);
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extern void hashflush(struct hashfile *f);
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extern void crc32_begin(struct hashfile *);
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extern uint32_t crc32_end(struct hashfile *);
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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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#endif
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