midx: don't peek into struct lock_file

Similar to the previous commits, avoid peeking into the `struct
lock_file`. Use the lock file API instead.

The two functions we're calling here double-check that the tempfile is
indeed "active", which is arguably overkill considering how we took the
lock on the line immediately above. More importantly, this future-proofs
us against, e.g., other code appearing between these two lines or the
lock file and/or tempfile internals changing.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Reviewed-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Martin Ågren 2021-01-05 20:23:48 +01:00 committed by Junio C Hamano
parent a52cdce936
commit acd7160201

2
midx.c
View File

@ -918,7 +918,7 @@ static int write_midx_internal(const char *object_dir, struct multi_pack_index *
(pack_name_concat_len % MIDX_CHUNK_ALIGNMENT);
hold_lock_file_for_update(&lk, midx_name, LOCK_DIE_ON_ERROR);
f = hashfd(lk.tempfile->fd, lk.tempfile->filename.buf);
f = hashfd(get_lock_file_fd(&lk), get_lock_file_path(&lk));
FREE_AND_NULL(midx_name);
if (packs.m)