networkd: add minimal client tool "networkd" to query network status

In the long run this should become a full fledged client to networkd
(but not before networkd learns bus support). For now, just pull
interesting data out of networkd, udev, and rtnl and present it to the
user, in a simple but useful output.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/libsystemd/sd-rtnl/rtnl-util.c b/src/libsystemd/sd-rtnl/rtnl-util.c
index c8b20d109e..0bc2c9b1f5 100644
--- a/src/libsystemd/sd-rtnl/rtnl-util.c
+++ b/src/libsystemd/sd-rtnl/rtnl-util.c
@@ -153,3 +153,13 @@ bool rtnl_message_type_is_addr(uint16_t type) {
                         return false;
         }
 }
+
+int rtnl_log_parse_error(int r) {
+        log_error("Failed to parse netlink message: %s", strerror(-r));
+        return r;
+}
+
+int rtnl_log_create_error(int r) {
+        log_error("Failed to create netlink message: %s", strerror(-r));
+        return r;
+}