setup: introduce the discover_git_directory() function

diff --git a/transport.c b/transport.c
index 3e8799a6111b3c8672e4068450c9d225f3fcccc5..d72e0894840fc384d67339b549a9a6bce7ba03ec 100644 (file)
--- a/transport.c
+++ b/transport.c
@@ -1015,7 +1015,9 @@ int transport_push(struct transport *transport,
                        if (run_pre_push_hook(transport, remote_refs))
                                return -1;
 
-               if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
+               if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
+                             TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
+                   !is_bare_repository()) {
                        struct ref *ref = remote_refs;
                        struct sha1_array commits = SHA1_ARRAY_INIT;
 
@@ -1033,7 +1035,8 @@ int transport_push(struct transport *transport,
                }
 
                if (((flags & TRANSPORT_RECURSE_SUBMODULES_CHECK) ||
-                    ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) &&
+                    ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
+                               TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
                      !pretend)) && !is_bare_repository()) {
                        struct ref *ref = remote_refs;
                        struct string_list needs_pushing = STRING_LIST_INIT_DUP;
@@ -1052,7 +1055,10 @@ int transport_push(struct transport *transport,
                        sha1_array_clear(&commits);
                }
 
-               push_ret = transport->push_refs(transport, remote_refs, flags);
+               if (!(flags & TRANSPORT_RECURSE_SUBMODULES_ONLY))
+                       push_ret = transport->push_refs(transport, remote_refs, flags);
+               else
+                       push_ret = 0;
                err = push_had_errors(remote_refs);
                ret = push_ret | err;
 
@@ -1064,7 +1070,8 @@ int transport_push(struct transport *transport,
                if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
                        set_upstreams(transport, remote_refs, pretend);
 
-               if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
+               if (!(flags & (TRANSPORT_PUSH_DRY_RUN |
+                              TRANSPORT_RECURSE_SUBMODULES_ONLY))) {
                        struct ref *ref;
                        for (ref = remote_refs; ref; ref = ref->next)
                                transport_update_tracking_ref(transport->remote, ref, verbose);
@@ -1214,7 +1221,7 @@ static int refs_from_alternate_cb(struct alternate_object_database *e,
        const struct ref *extra;
        struct alternate_refs_data *cb = data;
 
-       other = xstrdup(real_path(e->path));
+       other = real_pathdup(e->path);
        len = strlen(other);
 
        while (other[len-1] == '/')