refs/packed-backend.h

   1 #ifndef REFS_PACKED_BACKEND_H
   2 #define REFS_PACKED_BACKEND_H
   3
   4 struct ref_transaction;
   5
   6 /*
   7  * Support for storing references in a `packed-refs` file.
   8  *
   9  * Note that this backend doesn't check for D/F conflicts, because it
  10  * doesn't care about them. But usually it should be wrapped in a
  11  * `files_ref_store` that prevents D/F conflicts from being created,
  12  * even among packed refs.
  13  */
  14
  15 struct ref_store *packed_ref_store_create(const char *path,
  16                                           unsigned int store_flags);
  17
  18 /*
  19  * Lock the packed-refs file for writing. Flags is passed to
  20  * hold_lock_file_for_update(). Return 0 on success. On errors, write
  21  * an error message to `err` and return a nonzero value.
  22  */
  23 int packed_refs_lock(struct ref_store *ref_store, int flags, struct strbuf *err);
  24
  25 void packed_refs_unlock(struct ref_store *ref_store);
  26 int packed_refs_is_locked(struct ref_store *ref_store);
  27
  28 /*
  29  * Return true if `transaction` really needs to be carried out against
  30  * the specified packed_ref_store, or false if it can be skipped
  31  * (i.e., because it is an obvious NOOP). `ref_store` must be locked
  32  * before calling this function.
  33  */
  34 int is_packed_transaction_needed(struct ref_store *ref_store,
  35                                  struct ref_transaction *transaction);
  36
  37 #endif /* REFS_PACKED_BACKEND_H */