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-rw-r--r--refs/files-backend.c18
-rw-r--r--refs/refs-internal.h18
2 files changed, 25 insertions, 11 deletions
diff --git a/refs/files-backend.c b/refs/files-backend.c
index 561c33ac8a..6516c7bc8c 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -2565,16 +2565,18 @@ static void files_transaction_cleanup(struct files_ref_store *refs,
}
}
- if (backend_data->packed_transaction &&
- ref_transaction_abort(backend_data->packed_transaction, &err)) {
- error("error aborting transaction: %s", err.buf);
- strbuf_release(&err);
- }
+ if (backend_data) {
+ if (backend_data->packed_transaction &&
+ ref_transaction_abort(backend_data->packed_transaction, &err)) {
+ error("error aborting transaction: %s", err.buf);
+ strbuf_release(&err);
+ }
- if (backend_data->packed_refs_locked)
- packed_refs_unlock(refs->packed_ref_store);
+ if (backend_data->packed_refs_locked)
+ packed_refs_unlock(refs->packed_ref_store);
- free(backend_data);
+ free(backend_data);
+ }
transaction->state = REF_TRANSACTION_CLOSED;
}
diff --git a/refs/refs-internal.h b/refs/refs-internal.h
index ff2436c0fb..4271362d26 100644
--- a/refs/refs-internal.h
+++ b/refs/refs-internal.h
@@ -347,9 +347,13 @@ int is_empty_ref_iterator(struct ref_iterator *ref_iterator);
/*
* Return an iterator that goes over each reference in `refs` for
* which the refname begins with prefix. If trim is non-zero, then
- * trim that many characters off the beginning of each refname. flags
- * can be DO_FOR_EACH_INCLUDE_BROKEN to include broken references in
- * the iteration. The output is ordered by refname.
+ * trim that many characters off the beginning of each refname.
+ * The output is ordered by refname. The following flags are supported:
+ *
+ * DO_FOR_EACH_INCLUDE_BROKEN: include broken references in
+ * the iteration.
+ *
+ * DO_FOR_EACH_PER_WORKTREE_ONLY: only produce REF_TYPE_PER_WORKTREE refs.
*/
struct ref_iterator *refs_ref_iterator_begin(
struct ref_store *refs,
@@ -438,6 +442,14 @@ void base_ref_iterator_free(struct ref_iterator *iter);
/* Virtual function declarations for ref_iterators: */
+/*
+ * backend-specific implementation of ref_iterator_advance. For symrefs, the
+ * function should set REF_ISSYMREF, and it should also dereference the symref
+ * to provide the OID referent. If DO_FOR_EACH_INCLUDE_BROKEN is set, symrefs
+ * with non-existent referents and refs pointing to non-existent object names
+ * should also be returned. If DO_FOR_EACH_PER_WORKTREE_ONLY, only
+ * REF_TYPE_PER_WORKTREE refs should be returned.
+ */
typedef int ref_iterator_advance_fn(struct ref_iterator *ref_iterator);
typedef int ref_iterator_peel_fn(struct ref_iterator *ref_iterator,