libsystemd-rtnl: add a rtnetlink library

This is intentionally as similar to sd-bus as possible. While it
would be simple to export it, the intentions is to keep this
internal (at least for the forseeable future).

Currently only synchronous communication is implemented

1 files changed, 52 insertions, 0 deletions

diff --git a/src/systemd/sd-rtnl.h b/src/systemd/sd-rtnl.h
new file mode 100644
index 000000000..5f5f3e3d2
--- /dev/null
+++ b/src/systemd/sd-rtnl.h
@@ -0,0 +1,52 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2013 Tom Gundersen <teg@jklm.no>
+
+  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 <linux/rtnetlink.h>
+#include <linux/netlink.h>
+#include <stdint.h>
+#include <util.h>
+
+typedef struct sd_rtnl sd_rtnl;
+typedef struct sd_rtnl_message sd_rtnl_message;
+
+/* bus */
+int sd_rtnl_open(__u32 groups, sd_rtnl **nl);
+
+sd_rtnl *sd_rtnl_ref(sd_rtnl *nl);
+sd_rtnl *sd_rtnl_unref(sd_rtnl *nl);
+
+int sd_rtnl_send_with_reply_and_block(sd_rtnl *nl, sd_rtnl_message *message, uint64_t timeout, sd_rtnl_message **reply);
+
+/* messages */
+int sd_rtnl_message_link_new(__u16 msg_type, int index, unsigned int type, unsigned int flags, sd_rtnl_message **ret);
+int sd_rtnl_message_addr_new(__u16 msg_type, int index, unsigned char family, unsigned char prefixlen, unsigned char flags, unsigned char scope, sd_rtnl_message **ret);
+sd_rtnl_message *sd_rtnl_message_ref(sd_rtnl_message *m);
+sd_rtnl_message *sd_rtnl_message_unref(sd_rtnl_message *m);
+
+int sd_rtnl_message_get_type(sd_rtnl_message *m, __u16 *type);
+int sd_rtnl_message_append(sd_rtnl_message *m, unsigned short type, const void *data);
+int sd_rtnl_message_read(sd_rtnl_message *m, unsigned short *type, void **data);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(sd_rtnl*, sd_rtnl_unref);
+DEFINE_TRIVIAL_CLEANUP_FUNC(sd_rtnl_message*, sd_rtnl_message_unref);
+
+#define _cleanup_sd_rtnl_unref_ _cleanup_(sd_rtnl_unrefp)
+#define _cleanup_sd_rtnl_message_unref_ _cleanup_(sd_rtnl_message_unrefp)