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libbb: introduce and use bb_getsockname()

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function                                             old     new   delta
bb_getsockname                                         -      18     +18
xrtnl_open                                            88      83      -5
do_iplink                                           1216    1209      -7
arping_main                                         1686    1668     -18
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 0/3 up/down: 18/-30)            Total: -12 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2018-02-11 14:55:46 +01:00
parent d3162773d5
commit ba3b9dbf06
6 changed files with 29 additions and 20 deletions
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5
networking/libiproute/libnetlink.c
View File

@ -15,16 +15,13 @@
void FAST_FUNC xrtnl_open(struct rtnl_handle *rth/*, unsigned subscriptions*/)
{
socklen_t addr_len;
memset(rth, 0, sizeof(*rth));
rth->fd = xsocket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
rth->local.nl_family = AF_NETLINK;
/*rth->local.nl_groups = subscriptions;*/
xbind(rth->fd, (struct sockaddr*)&rth->local, sizeof(rth->local));
addr_len = sizeof(rth->local);
getsockname(rth->fd, (struct sockaddr*)&rth->local, &addr_len);
bb_getsockname(rth->fd, (struct sockaddr*)&rth->local, sizeof(rth->local));
/* too much paranoia
if (getsockname(rth->fd, (struct sockaddr*)&rth->local, &addr_len) < 0)