return tail;
}
+struct tips {
+ struct commit **tip;
+ int nr, alloc;
+};
+
+static void add_to_tips(struct tips *tips, const unsigned char *sha1)
+{
+ struct commit *commit;
+
+ if (is_null_sha1(sha1))
+ return;
+ commit = lookup_commit_reference_gently(sha1, 1);
+ if (!commit || (commit->object.flags & TMP_MARK))
+ return;
+ commit->object.flags |= TMP_MARK;
+ ALLOC_GROW(tips->tip, tips->nr + 1, tips->alloc);
+ tips->tip[tips->nr++] = commit;
+}
+
+static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***dst_tail)
+{
+ struct string_list dst_tag = STRING_LIST_INIT_NODUP;
+ struct string_list src_tag = STRING_LIST_INIT_NODUP;
+ struct string_list_item *item;
+ struct ref *ref;
+ struct tips sent_tips;
+
+ /*
+ * Collect everything we know they would have at the end of
+ * this push, and collect all tags they have.
+ */
+ memset(&sent_tips, 0, sizeof(sent_tips));
+ for (ref = *dst; ref; ref = ref->next) {
+ if (ref->peer_ref &&
+ !is_null_sha1(ref->peer_ref->new_sha1))
+ add_to_tips(&sent_tips, ref->peer_ref->new_sha1);
+ else
+ add_to_tips(&sent_tips, ref->old_sha1);
+ if (!prefixcmp(ref->name, "refs/tags/"))
+ string_list_append(&dst_tag, ref->name);
+ }
+ clear_commit_marks_many(sent_tips.nr, sent_tips.tip, TMP_MARK);
+
+ sort_string_list(&dst_tag);
+
+ /* Collect tags they do not have. */
+ for (ref = src; ref; ref = ref->next) {
+ if (prefixcmp(ref->name, "refs/tags/"))
+ continue; /* not a tag */
+ if (string_list_has_string(&dst_tag, ref->name))
+ continue; /* they already have it */
+ if (sha1_object_info(ref->new_sha1, NULL) != OBJ_TAG)
+ continue; /* be conservative */
+ item = string_list_append(&src_tag, ref->name);
+ item->util = ref;
+ }
+ string_list_clear(&dst_tag, 0);
+
+ /*
+ * At this point, src_tag lists tags that are missing from
+ * dst, and sent_tips lists the tips we are pushing or those
+ * that we know they already have. An element in the src_tag
+ * that is an ancestor of any of the sent_tips needs to be
+ * sent to the other side.
+ */
+ if (sent_tips.nr) {
+ for_each_string_list_item(item, &src_tag) {
+ struct ref *ref = item->util;
+ struct ref *dst_ref;
+ struct commit *commit;
+
+ if (is_null_sha1(ref->new_sha1))
+ continue;
+ commit = lookup_commit_reference_gently(ref->new_sha1, 1);
+ if (!commit)
+ /* not pushing a commit, which is not an error */
+ continue;
+
+ /*
+ * Is this tag, which they do not have, reachable from
+ * any of the commits we are sending?
+ */
+ if (!in_merge_bases_many(commit, sent_tips.nr, sent_tips.tip))
+ continue;
+
+ /* Add it in */
+ dst_ref = make_linked_ref(ref->name, dst_tail);
+ hashcpy(dst_ref->new_sha1, ref->new_sha1);
+ dst_ref->peer_ref = copy_ref(ref);
+ }
+ }
+ string_list_clear(&src_tag, 0);
+ free(sent_tips.tip);
+}
+
/*
* Given the set of refs the local repository has, the set of refs the
* remote repository has, and the refspec used for push, determine
free_name:
free(dst_name);
}
+
+ if (flags & MATCH_REFS_FOLLOW_TAGS)
+ add_missing_tags(src, dst, &dst_tail);
+
if (send_prune) {
/* check for missing refs on the remote */
for (ref = *dst; ref; ref = ref->next) {