iplink: implement support for selecting a master interface

Attaching an interface to a VRF is done by setting the interface's
master. Besides VRF, this can also be used for bridges.

function                                             old     new   delta
set_master                                             -     142    +142
do_iplink                                           1262    1357     +95
packed_usage                                       32546   32539      -7
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/1 up/down: 237/-7)            Total: 230 bytes

Signed-off-by: Jan Luebbe <jluebbe@debian.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/networking/tcpudp.c b/networking/tcpudp.c
index d4c69e0f7..2feb63a01 100644
--- a/networking/tcpudp.c
+++ b/networking/tcpudp.c
@@ -318,7 +318,7 @@ int tcpudpsvd_main(int argc UNUSED_PARAM, char **argv)
         sslser = user;
         client = 0;
         if ((getuid() == 0) && !(opts & OPT_u)) {
-                xfunc_exitcode = 100;
+                xfunc_error_retval = 100;
                 bb_error_msg_and_die(bb_msg_you_must_be_root);
         }
         if (opts & OPT_u)