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| author | Taylor Blau <me@ttaylorr.com> | 2021-06-23 18:39:07 (GMT) |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2021-06-29 03:36:17 (GMT) |
| commit | f9221e2cf5049805d9151b3db6a5eef07b1cc92e (patch) | |
| tree | 962e5c2742ae80de7f45353ba5813580caeeaa99 /csum-file.h | |
| parent | ebf3c04b262aa27fbb97f8a0156c2347fecafafb (diff) | |
| download | git-f9221e2cf5049805d9151b3db6a5eef07b1cc92e.zip git-f9221e2cf5049805d9151b3db6a5eef07b1cc92e.tar.gz git-f9221e2cf5049805d9151b3db6a5eef07b1cc92e.tar.bz2 | |
csum-file: introduce checksum_valid()
Introduce a new function which checks the validity of a file's trailing
checksum. This is similar to hashfd_check(), but different since it is
intended to be used by callers who aren't writing the same data (like
`git index-pack --verify`), but who instead want to validate the
integrity of data that they are reading.
Rewrite the first of two callers which could benefit from this new
function in pack-check.c. Subsequent callers will be added in the
following patches.
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'csum-file.h')
| -rw-r--r-- | csum-file.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/csum-file.h b/csum-file.h index e54d53d..87e3879 100644 --- a/csum-file.h +++ b/csum-file.h @@ -42,6 +42,9 @@ 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). |