resolved: add a generic DnsSearchDomain concept

With this change, we add a new object to resolved, "DnsSearchDomain="
which wraps a search domain. This is then used to introduce a global
search domain list, in addition to the existing per-link search domain
list which is reword to make use of this new object too.

This is preparation for implement proper unicast DNS search domain
support.

1 files changed, 71 insertions, 0 deletions

diff --git a/src/resolve/resolved-dns-search-domain.h b/src/resolve/resolved-dns-search-domain.h
new file mode 100644
index 0000000000..20b441206c
--- /dev/null
+++ b/src/resolve/resolved-dns-search-domain.h
@@ -0,0 +1,71 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+  This file is part of systemd.
+
+  Copyright 2015 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "macro.h"
+
+typedef struct DnsSearchDomain DnsSearchDomain;
+
+typedef enum DnsSearchDomainType {
+        DNS_SEARCH_DOMAIN_SYSTEM,
+        DNS_SEARCH_DOMAIN_LINK,
+} DnsSearchDomainType;
+
+#include "resolved-link.h"
+#include "resolved-manager.h"
+
+struct DnsSearchDomain {
+        Manager *manager;
+
+        unsigned n_ref;
+
+        DnsSearchDomainType type;
+        Link *link;
+
+        char *name;
+
+        bool marked:1;
+
+        bool linked:1;
+        LIST_FIELDS(DnsSearchDomain, domains);
+};
+
+int dns_search_domain_new(
+                Manager *m,
+                DnsSearchDomain **ret,
+                DnsSearchDomainType type,
+                Link *link,
+                const char *name);
+
+DnsSearchDomain* dns_search_domain_ref(DnsSearchDomain *d);
+DnsSearchDomain* dns_search_domain_unref(DnsSearchDomain *d);
+
+void dns_search_domain_unlink(DnsSearchDomain *d);
+void dns_search_domain_move_back_and_unmark(DnsSearchDomain *d);
+
+void dns_search_domain_unlink_all(DnsSearchDomain *first);
+void dns_search_domain_unlink_marked(DnsSearchDomain *first);
+void dns_search_domain_mark_all(DnsSearchDomain *first);
+
+int dns_search_domain_find(DnsSearchDomain *first, const char *name, DnsSearchDomain **ret);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(DnsSearchDomain*, dns_search_domain_unref);