Documentation: add documentation for 'git interpret-trailers'

diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index 5ad9075b3c4b378366f5146ea204160b76859d46..afb8d9926496de2bed8bcab793dd79562e575e18 100644 (file)
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -473,7 +473,6 @@ static const char *update(struct command *cmd, struct shallow_info *si)
        const char *namespaced_name;
        unsigned char *old_sha1 = cmd->old_sha1;
        unsigned char *new_sha1 = cmd->new_sha1;
-       struct ref_lock *lock;
 
        /* only refs/... are allowed */
        if (!starts_with(name, "refs/") || check_refname_format(name + 5, 0)) {
@@ -574,19 +573,27 @@ static const char *update(struct command *cmd, struct shallow_info *si)
                return NULL; /* good */
        }
        else {
+               struct strbuf err = STRBUF_INIT;
+               struct ref_transaction *transaction;
+
                if (shallow_update && si->shallow_ref[cmd->index] &&
                    update_shallow_ref(cmd, si))
                        return "shallow error";
 
-               lock = lock_any_ref_for_update(namespaced_name, old_sha1,
-                                              0, NULL);
-               if (!lock) {
-                       rp_error("failed to lock %s", name);
-                       return "failed to lock";
-               }
-               if (write_ref_sha1(lock, new_sha1, "push")) {
-                       return "failed to write"; /* error() already called */
+               transaction = ref_transaction_begin(&err);
+               if (!transaction ||
+                   ref_transaction_update(transaction, namespaced_name,
+                                          new_sha1, old_sha1, 0, 1, &err) ||
+                   ref_transaction_commit(transaction, "push", &err)) {
+                       ref_transaction_free(transaction);
+
+                       rp_error("%s", err.buf);
+                       strbuf_release(&err);
+                       return "failed to update ref";
                }
+
+               ref_transaction_free(transaction);
+               strbuf_release(&err);
                return NULL; /* good */
        }
 }