git/refs/packed-backend.h
Jonathan Tan 34224e14d6 refs: plumb repo into ref stores
In preparation for the next 2 patches that adds (partial) support for
arbitrary repositories to ref iterators, plumb a repository into all ref
stores. There are no changes to program logic.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-08 15:06:05 -07:00

40 lines
1.3 KiB
C

#ifndef REFS_PACKED_BACKEND_H
#define REFS_PACKED_BACKEND_H
struct repository;
struct ref_transaction;
/*
* Support for storing references in a `packed-refs` file.
*
* Note that this backend doesn't check for D/F conflicts, because it
* doesn't care about them. But usually it should be wrapped in a
* `files_ref_store` that prevents D/F conflicts from being created,
* even among packed refs.
*/
struct ref_store *packed_ref_store_create(struct repository *repo,
const char *path,
unsigned int store_flags);
/*
* Lock the packed-refs file for writing. Flags is passed to
* hold_lock_file_for_update(). Return 0 on success. On errors, write
* an error message to `err` and return a nonzero value.
*/
int packed_refs_lock(struct ref_store *ref_store, int flags, struct strbuf *err);
void packed_refs_unlock(struct ref_store *ref_store);
int packed_refs_is_locked(struct ref_store *ref_store);
/*
* Return true if `transaction` really needs to be carried out against
* the specified packed_ref_store, or false if it can be skipped
* (i.e., because it is an obvious NOOP). `ref_store` must be locked
* before calling this function.
*/
int is_packed_transaction_needed(struct ref_store *ref_store,
struct ref_transaction *transaction);
#endif /* REFS_PACKED_BACKEND_H */