libiproute: make rt_addr_n2a() and format_host() return auto strings

function                                             old     new   delta
rt_addr_n2a                                           56      53      -3
print_addrinfo                                      1227    1178     -49
print_neigh                                          933     881     -52
print_rule                                           689     617     -72
print_tunnel                                         640     560     -80
print_route                                         1727    1588    -139
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/6 up/down: 0/-395)           Total: -395 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 7 insertions, 12 deletions

diff --git a/networking/libiproute/iprule.c b/networking/libiproute/iprule.c
index c3b210982..dba64346f 100644
--- a/networking/libiproute/iprule.c
+++ b/networking/libiproute/iprule.c
@@ -44,7 +44,6 @@ static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
         int len = n->nlmsg_len;
         int host_len = -1;
         struct rtattr * tb[RTA_MAX+1];
-        char abuf[256];
 
         if (n->nlmsg_type != RTM_NEWRULE)
                 return 0;
@@ -71,16 +70,14 @@ static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
         printf("from ");
         if (tb[RTA_SRC]) {
                 if (r->rtm_src_len != host_len) {
-                        printf("%s/%u", rt_addr_n2a(r->rtm_family,
-                                                        RTA_DATA(tb[RTA_SRC]),
-                                                        abuf, sizeof(abuf)),
+                        printf("%s/%u",
+                                rt_addr_n2a(r->rtm_family, RTA_DATA(tb[RTA_SRC])),
                                 r->rtm_src_len
                         );
                 } else {
                         fputs(format_host(r->rtm_family,
                                                 RTA_PAYLOAD(tb[RTA_SRC]),
-                                                RTA_DATA(tb[RTA_SRC]),
-                                                abuf, sizeof(abuf)),
+                                                RTA_DATA(tb[RTA_SRC])),
                                 stdout
                         );
                 }
@@ -94,15 +91,13 @@ static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
         if (tb[RTA_DST]) {
                 if (r->rtm_dst_len != host_len) {
                         printf("to %s/%u ", rt_addr_n2a(r->rtm_family,
-                                                         RTA_DATA(tb[RTA_DST]),
-                                                         abuf, sizeof(abuf)),
+                                                         RTA_DATA(tb[RTA_DST])),
                                 r->rtm_dst_len
                                 );
                 } else {
                         printf("to %s ", format_host(r->rtm_family,
                                                        RTA_PAYLOAD(tb[RTA_DST]),
-                                                       RTA_DATA(tb[RTA_DST]),
-                                                       abuf, sizeof(abuf)));
+                                                       RTA_DATA(tb[RTA_DST])));
                 }
         } else if (r->rtm_dst_len) {
                 printf("to 0/%d ", r->rtm_dst_len);
@@ -139,8 +134,8 @@ static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
                         printf("map-to %s ",
                                 format_host(r->rtm_family,
                                             RTA_PAYLOAD(tb[RTA_GATEWAY]),
-                                            RTA_DATA(tb[RTA_GATEWAY]),
-                                            abuf, sizeof(abuf)));
+                                            RTA_DATA(tb[RTA_GATEWAY]))
+                        );
                 } else
                         printf("masquerade");
         } else if (r->rtm_type != RTN_UNICAST)