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-rw-r--r--refs.h23
1 files changed, 22 insertions, 1 deletions
diff --git a/refs.h b/refs.h
index 3c3da29bf0..56089d5724 100644
--- a/refs.h
+++ b/refs.h
@@ -109,6 +109,11 @@ extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
* If this succeeds, the ref updates will have taken place and
* the transaction cannot be rolled back.
*
+ * - Instead of `ref_transaction_commit`, use
+ * `initial_ref_transaction_commit()` if the ref database is known
+ * to be empty (e.g. during clone). This is likely to be much
+ * faster.
+ *
* - At any time call `ref_transaction_free()` to discard the
* transaction and free associated resources. In particular,
* this rolls back the transaction if it has not been
@@ -124,6 +129,13 @@ extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
*
* The message is appended to err without first clearing err.
* err will not be '\n' terminated.
+ *
+ * Caveats
+ * -------
+ *
+ * Note that no locks are taken, and no refs are read, until
+ * `ref_transaction_commit` is called. So `ref_transaction_verify`
+ * won't report a verification failure until the commit is attempted.
*/
struct ref_transaction;
@@ -294,6 +306,15 @@ extern int rename_ref(const char *oldref, const char *newref, const char *logmsg
extern int create_symref(const char *refname, const char *target, const char *logmsg);
+/*
+ * Update HEAD of the specified gitdir.
+ * Similar to create_symref("relative-git-dir/HEAD", target, NULL), but
+ * this can update the main working tree's HEAD regardless of where
+ * $GIT_DIR points to.
+ * Return 0 if successful, non-zero otherwise.
+ * */
+extern int set_worktree_head_symref(const char *gitdir, const char *target);
+
enum action_on_err {
UPDATE_REFS_MSG_ON_ERR,
UPDATE_REFS_DIE_ON_ERR,
@@ -324,7 +345,7 @@ struct ref_transaction *ref_transaction_begin(struct strbuf *err);
* msg -- a message describing the change (for the reflog).
*
* err -- a strbuf for receiving a description of any error that
- * might have occured.
+ * might have occurred.
*
* The functions make internal copies of refname and msg, so the
* caller retains ownership of these parameters.