From c8bae7493d2f2910b57f13ded012e86bdcfb0532 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 16:47:53 +0200 Subject: Adding upstream version 1:2.39.2. Signed-off-by: Daniel Baumann --- csum-file.h | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 csum-file.h (limited to 'csum-file.h') diff --git a/csum-file.h b/csum-file.h new file mode 100644 index 0000000..0d29f52 --- /dev/null +++ b/csum-file.h @@ -0,0 +1,78 @@ +#ifndef CSUM_FILE_H +#define CSUM_FILE_H + +#include "cache.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 *, enum fsync_component, 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 -- cgit v1.2.3