Merge branch 'mh/refs-have-new'

Simplify the ref transaction API around how "the ref should be
pointing at this object" is specified.

* mh/refs-have-new:
  refs.h: remove duplication in function docstrings
  update_ref(): improve documentation
  ref_transaction_verify(): new function to check a reference's value
  ref_transaction_delete(): check that old_sha1 is not null_sha1
  ref_transaction_create(): check that new_sha1 is valid
  commit: avoid race when creating orphan commits
  commit: add tests of commit races
  ref_transaction_delete(): remove "have_old" parameter
  ref_transaction_update(): remove "have_old" parameter
  struct ref_update: move "have_old" into "flags"
  refs.c: change some "flags" to "unsigned int"
  refs: remove the gap in the REF_* constant values
  refs: move REF_DELETING to refs.c
This commit is contained in:
Junio C Hamano
2015-03-05 12:45:39 -08:00
14 changed files with 233 additions and 106 deletions

View File

@ -415,8 +415,10 @@ static int s_update_ref(const char *action,
transaction = ref_transaction_begin(&err);
if (!transaction ||
ref_transaction_update(transaction, ref->name, ref->new_sha1,
ref->old_sha1, 0, check_old, msg, &err))
ref_transaction_update(transaction, ref->name,
ref->new_sha1,
check_old ? ref->old_sha1 : NULL,
0, msg, &err))
goto fail;
ret = ref_transaction_commit(transaction, &err);