/*
* Used as a flag in ref_update::flags when a loose ref is being
- * pruned.
+ * pruned. This flag must only be used when REF_NODEREF is set.
*/
#define REF_ISPRUNING 0x04
* value to ref_update::flags
*/
+/*
+ * Used as a flag in ref_update::flags when we want to log a ref
+ * update but not actually perform it. This is used when a symbolic
+ * ref update is split up.
+ */
+#define REF_LOG_ONLY 0x80
+
+/*
+ * Internal flag, meaning that the containing ref_update was via an
+ * update to HEAD.
+ */
+#define REF_UPDATE_VIA_HEAD 0x100
+
/*
* Return true iff refname is minimally safe. "Safe" here means that
* deleting a loose reference by this name will not do any damage, for
* extras and skip must be sorted.
*/
int verify_refname_available(const char *newname,
- struct string_list *extras,
- struct string_list *skip,
+ const struct string_list *extras,
+ const struct string_list *skip,
struct strbuf *err);
/*
* not exist before update.
*/
struct ref_update {
+
/*
* If (flags & REF_HAVE_NEW), set the reference to this value:
*/
unsigned char new_sha1[20];
+
/*
* If (flags & REF_HAVE_OLD), check that the reference
* previously had this value:
*/
unsigned char old_sha1[20];
+
/*
* One or more of REF_HAVE_NEW, REF_HAVE_OLD, REF_NODEREF,
- * REF_DELETING, and REF_ISPRUNING:
+ * REF_DELETING, REF_ISPRUNING, REF_LOG_ONLY, and
+ * REF_UPDATE_VIA_HEAD:
*/
unsigned int flags;
+
struct ref_lock *lock;
- int type;
+ unsigned int type;
char *msg;
+
+ /*
+ * If this ref_update was split off of a symref update via
+ * split_symref_update(), then this member points at that
+ * update. This is used for two purposes:
+ * 1. When reporting errors, we report the refname under which
+ * the update was originally requested.
+ * 2. When we read the old value of this reference, we
+ * propagate it back to its parent update for recording in
+ * the latter's reflog.
+ */
+ struct ref_update *parent_update;
+
const char refname[FLEX_ARRAY];
};
+/*
+ * Add a ref_update with the specified properties to transaction, and
+ * return a pointer to the new object. This function does not verify
+ * that refname is well-formed. new_sha1 and old_sha1 are only
+ * dereferenced if the REF_HAVE_NEW and REF_HAVE_OLD bits,
+ * respectively, are set in flags.
+ */
+struct ref_update *ref_transaction_add_update(
+ struct ref_transaction *transaction,
+ const char *refname, unsigned int flags,
+ const unsigned char *new_sha1,
+ const unsigned char *old_sha1,
+ const char *msg);
+
/*
* Transaction states.
* OPEN: The transaction is in a valid state and can accept new updates.
#define DO_FOR_EACH_INCLUDE_BROKEN 0x01
/*
- * The common backend for the for_each_*ref* functions
+ * Call fn for each reference in the specified submodule for which the
+ * refname begins with prefix. If trim is non-zero, then trim that
+ * many characters off the beginning of each refname before passing
+ * the refname to fn. flags can be DO_FOR_EACH_INCLUDE_BROKEN to
+ * include broken references in the iteration. If fn ever returns a
+ * non-zero value, stop the iteration and return that value;
+ * otherwise, return 0.
+ *
+ * This is the common backend for the for_each_*ref* functions.
*/
-int do_for_each_ref(const char *submodule, const char *base,
+int do_for_each_ref(const char *submodule, const char *prefix,
each_ref_fn fn, int trim, int flags, void *cb_data);
/*