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refs/files-backend: 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. Note how we obtain the path
to the lock file if `fdopen_lock_file()` failed and that this is not a
problem: as documented in lockfile.h, failure to "fdopen" does not roll
back the lock file and we're free to, e.g., query it for its path.

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 20:23:49 +01:00 committed by Junio C Hamano
parent acd7160201
commit 7f0dc7998b
1 changed files with 2 additions and 2 deletions
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4
refs/files-backend.c
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@ -1824,12 +1824,12 @@ static int create_symref_locked(struct files_ref_store *refs,
if (!fdopen_lock_file(&lock->lk, "w"))
return error("unable to fdopen %s: %s",
lock->lk.tempfile->filename.buf, strerror(errno));
get_lock_file_path(&lock->lk), strerror(errno));
update_symref_reflog(refs, lock, refname, target, logmsg);
/* no error check; commit_ref will check ferror */
fprintf(lock->lk.tempfile->fp, "ref: %s\n", target);
fprintf(get_lock_file_fp(&lock->lk), "ref: %s\n", target);
if (commit_ref(lock) < 0)
return error("unable to write symref for %s: %s", refname,
strerror(errno));