diff mbox series

[v4,10/16] midx: keep track of the checksum

Message ID 3fc9b83dc61837409b3d68f4676fc7a982f10593.1617116623.git.me@ttaylorr.com (mailing list archive)
State New, archived
Headers show
Series midx: implement a multi-pack reverse index | expand

Commit Message

Taylor Blau March 30, 2021, 3:04 p.m. UTC 
write_midx_internal() uses a hashfile to write the multi-pack index, but
discards its checksum. This makes sense, since nothing that takes place
after writing the MIDX cares about its checksum.

That is about to change in a subsequent patch, when the optional
reverse index corresponding to the MIDX will want to include the MIDX's
checksum.

Store the checksum of the MIDX in preparation for that.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
---
 midx.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/midx.c b/midx.c
index 3edde2b68d..526795ff0e 100644
--- a/midx.c
+++ b/midx.c
@@ -811,6 +811,7 @@  static int write_midx_internal(const char *object_dir, struct multi_pack_index *
 			       unsigned flags)
 {
 	char *midx_name;
+	unsigned char midx_hash[GIT_MAX_RAWSZ];
 	uint32_t i;
 	struct hashfile *f = NULL;
 	struct lock_file lk;
@@ -987,7 +988,7 @@  static int write_midx_internal(const char *object_dir, struct multi_pack_index *
 	write_midx_header(f, get_num_chunks(cf), ctx.nr - dropped_packs);
 	write_chunkfile(cf, &ctx);
 
-	finalize_hashfile(f, NULL, CSUM_FSYNC | CSUM_HASH_IN_STREAM);
+	finalize_hashfile(f, midx_hash, CSUM_FSYNC | CSUM_HASH_IN_STREAM);
 	free_chunkfile(cf);
 	commit_lock_file(&lk);