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, 15 insertions, 21 deletions

diff --git a/networking/libiproute/iproute.c b/networking/libiproute/iproute.c
index 0d2914405..d232ee6fd 100644
--- a/networking/libiproute/iproute.c
+++ b/networking/libiproute/iproute.c
@@ -61,7 +61,6 @@ static int FAST_FUNC print_route(const struct sockaddr_nl *who UNUSED_PARAM,
         struct rtmsg *r = NLMSG_DATA(n);
         int len = n->nlmsg_len;
         struct rtattr *tb[RTA_MAX+1];
-        char abuf[256];
         inet_prefix dst;
         inet_prefix src;
         int host_len = -1;
@@ -218,17 +217,15 @@ static int FAST_FUNC print_route(const struct sockaddr_nl *who UNUSED_PARAM,
 
         if (tb[RTA_DST]) {
                 if (r->rtm_dst_len != host_len) {
-                        printf("%s/%u ", rt_addr_n2a(r->rtm_family,
-                                                RTA_DATA(tb[RTA_DST]),
-                                                abuf, sizeof(abuf)),
-                                        r->rtm_dst_len
-                                        );
+                        printf("%s/%u ",
+                                rt_addr_n2a(r->rtm_family, RTA_DATA(tb[RTA_DST])),
+                                r->rtm_dst_len
+                        );
                 } else {
                         printf("%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("0/%d ", r->rtm_dst_len);
@@ -237,17 +234,15 @@ static int FAST_FUNC print_route(const struct sockaddr_nl *who UNUSED_PARAM,
         }
         if (tb[RTA_SRC]) {
                 if (r->rtm_src_len != host_len) {
-                        printf("from %s/%u ", rt_addr_n2a(r->rtm_family,
-                                                RTA_DATA(tb[RTA_SRC]),
-                                                abuf, sizeof(abuf)),
-                                        r->rtm_src_len
-                                        );
+                        printf("from %s/%u ",
+                                rt_addr_n2a(r->rtm_family, RTA_DATA(tb[RTA_SRC])),
+                                r->rtm_src_len
+                        );
                 } else {
                         printf("from %s ", format_host(r->rtm_family,
                                                 RTA_PAYLOAD(tb[RTA_SRC]),
-                                                RTA_DATA(tb[RTA_SRC]),
-                                                abuf, sizeof(abuf))
-                                        );
+                                                RTA_DATA(tb[RTA_SRC]))
+                        );
                 }
         } else if (r->rtm_src_len) {
                 printf("from 0/%u ", r->rtm_src_len);
@@ -255,8 +250,8 @@ static int FAST_FUNC print_route(const struct sockaddr_nl *who UNUSED_PARAM,
         if (tb[RTA_GATEWAY] && G_filter.rvia.bitlen != host_len) {
                 printf("via %s ", format_host(r->rtm_family,
                                         RTA_PAYLOAD(tb[RTA_GATEWAY]),
-                                        RTA_DATA(tb[RTA_GATEWAY]),
-                                        abuf, sizeof(abuf)));
+                                        RTA_DATA(tb[RTA_GATEWAY]))
+                );
         }
         if (tb[RTA_OIF]) {
                 printf("dev %s ", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_OIF])));
@@ -269,8 +264,7 @@ static int FAST_FUNC print_route(const struct sockaddr_nl *who UNUSED_PARAM,
                    and symbolic name will not be useful.
                  */
                 printf(" src %s ", rt_addr_n2a(r->rtm_family,
-                                        RTA_DATA(tb[RTA_PREFSRC]),
-                                        abuf, sizeof(abuf)));
+                                        RTA_DATA(tb[RTA_PREFSRC])));
         }
         if (tb[RTA_PRIORITY]) {
                 printf(" metric %d ", *(uint32_t*)RTA_DATA(tb[RTA_PRIORITY]));