libiproute: use itoa() where appropriate

function                                             old     new   delta
rtnl_rtprot_a2n                                       31      88     +57
print_tunnel                                         647     640      -7
print_route                                         1865    1858      -7
print_linkinfo                                       820     812      -8
print_addrinfo                                      1241    1227     -14
rtnl_rttable_n2a                                      53      38     -15
rtnl_rtscope_n2a                                      53      38     -15
rtnl_rtrealm_n2a                                      53      38     -15
rtnl_dsfield_n2a                                      61      38     -23
rtnl_rtntype_n2a                                     118      89     -29
print_rule                                           724     689     -35
ipaddr_list_or_flush                                1293    1253     -40
rtnl_rtprot_n2a                                       53       -     -53
rtnl_rtprot_initialize                                63       -     -63
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 1/11 up/down: 57/-324)         Total: -267 bytes

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

9 files changed, 37 insertions, 61 deletions

diff --git a/networking/libiproute/ipaddress.c b/networking/libiproute/ipaddress.c
index a6d5129e7..8845cab91 100644
--- a/networking/libiproute/ipaddress.c
+++ b/networking/libiproute/ipaddress.c
@@ -137,12 +137,11 @@ static NOINLINE int print_linkinfo(const struct nlmsghdr *n)
         {
                 unsigned m_flag = 0;
                 if (tb[IFLA_LINK]) {
-                        SPRINT_BUF(b1);
                         int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
                         if (iflink == 0)
                                 printf("@NONE: ");
                         else {
-                                printf("@%s: ", ll_idx_n2a(iflink, b1));
+                                printf("@%s: ", ll_index_to_name(iflink));
                                 m_flag = ll_index_to_flags(iflink);
                                 m_flag = !(m_flag & IFF_UP);
                         }
@@ -158,8 +157,7 @@ static NOINLINE int print_linkinfo(const struct nlmsghdr *n)
                 printf("qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC]));
 #ifdef IFLA_MASTER
         if (tb[IFLA_MASTER]) {
-                SPRINT_BUF(b1);
-                printf("master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
+                printf("master %s ", ll_index_to_name(*(int*)RTA_DATA(tb[IFLA_MASTER])));
         }
 #endif
 /* IFLA_OPERSTATE was added to kernel with the same commit as IFF_DORMANT */
@@ -218,7 +216,6 @@ static int FAST_FUNC print_addrinfo(const struct sockaddr_nl *who UNUSED_PARAM,
         int len = n->nlmsg_len;
         struct rtattr * rta_tb[IFA_MAX+1];
         char abuf[256];
-        SPRINT_BUF(b1);
 
         if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
                 return 0;
@@ -250,7 +247,7 @@ static int FAST_FUNC print_addrinfo(const struct sockaddr_nl *who UNUSED_PARAM,
                 if (rta_tb[IFA_LABEL])
                         label = RTA_DATA(rta_tb[IFA_LABEL]);
                 else
-                        label = ll_idx_n2a(ifa->ifa_index, b1);
+                        label = ll_index_to_name(ifa->ifa_index);
                 if (fnmatch(G_filter.label, label, 0) != 0)
                         return 0;
         }
@@ -325,7 +322,7 @@ static int FAST_FUNC print_addrinfo(const struct sockaddr_nl *who UNUSED_PARAM,
                                         abuf, sizeof(abuf))
                 );
         }
-        printf("scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1));
+        printf("scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope));
         if (ifa->ifa_flags & IFA_F_SECONDARY) {
                 ifa->ifa_flags &= ~IFA_F_SECONDARY;
                 printf("secondary ");
@@ -556,12 +553,11 @@ int FAST_FUNC ipaddr_list_or_flush(char **argv, int flush)
                                                         continue;
                                         }
                                         if (G_filter.label) {
-                                                SPRINT_BUF(b1);
                                                 const char *label;
                                                 if (tb[IFA_LABEL])
                                                         label = RTA_DATA(tb[IFA_LABEL]);
                                                 else
-                                                        label = ll_idx_n2a(ifa->ifa_index, b1);
+                                                        label = ll_index_to_name(ifa->ifa_index);
                                                 if (fnmatch(G_filter.label, label, 0) != 0)
                                                         continue;
                                         }
diff --git a/networking/libiproute/iproute.c b/networking/libiproute/iproute.c
index 170c67b30..6ecd5f719 100644
--- a/networking/libiproute/iproute.c
+++ b/networking/libiproute/iproute.c
@@ -87,7 +87,6 @@ static int FAST_FUNC print_route(const struct sockaddr_nl *who UNUSED_PARAM,
         inet_prefix dst;
         inet_prefix src;
         int host_len = -1;
-        SPRINT_BUF(b1);
 
         if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) {
                 fprintf(stderr, "Not a route: %08x %08x %08x\n",
@@ -236,7 +235,7 @@ static int FAST_FUNC print_route(const struct sockaddr_nl *who UNUSED_PARAM,
                 printf("Deleted ");
         }
         if (r->rtm_type != RTN_UNICAST /* && !G_filter.type - always 0 */) {
-                printf("%s ", rtnl_rtntype_n2a(r->rtm_type, b1));
+                printf("%s ", rtnl_rtntype_n2a(r->rtm_type));
         }
 
         if (tb[RTA_DST]) {
diff --git a/networking/libiproute/iprule.c b/networking/libiproute/iprule.c
index 8dbe6bd92..774a3e220 100644
--- a/networking/libiproute/iprule.c
+++ b/networking/libiproute/iprule.c
@@ -45,7 +45,6 @@ static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
         int host_len = -1;
         struct rtattr * tb[RTA_MAX+1];
         char abuf[256];
-        SPRINT_BUF(b1);
 
         if (n->nlmsg_type != RTM_NEWRULE)
                 return 0;
@@ -110,7 +109,7 @@ static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
         }
 
         if (r->rtm_tos) {
-                printf("tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1));
+                printf("tos %s ", rtnl_dsfield_n2a(r->rtm_tos));
         }
         if (tb[RTA_PROTOINFO]) {
                 printf("fwmark %#x ", *(uint32_t*)RTA_DATA(tb[RTA_PROTOINFO]));
@@ -121,7 +120,7 @@ static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
         }
 
         if (r->rtm_table)
-                printf("lookup %s ", rtnl_rttable_n2a(r->rtm_table, b1));
+                printf("lookup %s ", rtnl_rttable_n2a(r->rtm_table));
 
         if (tb[RTA_FLOW]) {
                 uint32_t to = *(uint32_t*)RTA_DATA(tb[RTA_FLOW]);
@@ -129,10 +128,10 @@ static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
                 to &= 0xFFFF;
                 if (from) {
                         printf("realms %s/",
-                                rtnl_rtrealm_n2a(from, b1));
+                                rtnl_rtrealm_n2a(from));
                 }
                 printf("%s ",
-                        rtnl_rtrealm_n2a(to, b1));
+                        rtnl_rtrealm_n2a(to));
         }
 
         if (r->rtm_type == RTN_NAT) {
@@ -145,7 +144,7 @@ static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
                 } else
                         printf("masquerade");
         } else if (r->rtm_type != RTN_UNICAST)
-                fputs(rtnl_rtntype_n2a(r->rtm_type, b1), stdout);
+                fputs(rtnl_rtntype_n2a(r->rtm_type), stdout);
 
         bb_putchar('\n');
         /*fflush_all();*/
diff --git a/networking/libiproute/iptunnel.c b/networking/libiproute/iptunnel.c
index b54c3c53f..a65d5e579 100644
--- a/networking/libiproute/iptunnel.c
+++ b/networking/libiproute/iptunnel.c
@@ -432,13 +432,12 @@ static void print_tunnel(struct ip_tunnel_parm *p)
         else
                 printf(" ttl inherit ");
         if (p->iph.tos) {
-                SPRINT_BUF(b1);
                 printf(" tos");
                 if (p->iph.tos & 1)
                         printf(" inherit");
                 if (p->iph.tos & ~1)
                         printf("%c%s ", p->iph.tos & 1 ? '/' : ' ',
-                                rtnl_dsfield_n2a(p->iph.tos & ~1, b1));
+                                rtnl_dsfield_n2a(p->iph.tos & ~1));
         }
         if (!(p->iph.frag_off & htons(IP_DF)))
                 printf(" nopmtudisc");
diff --git a/networking/libiproute/ll_map.c b/networking/libiproute/ll_map.c
index 27cd90f34..feb6e8d22 100644
--- a/networking/libiproute/ll_map.c
+++ b/networking/libiproute/ll_map.c
@@ -99,7 +99,6 @@ const char FAST_FUNC *ll_idx_n2a(int idx, char *buf)
         return buf;
 }
 
-
 const char FAST_FUNC *ll_index_to_name(int idx)
 {
         static char nbuf[16];
diff --git a/networking/libiproute/rt_names.c b/networking/libiproute/rt_names.c
index c474ab903..375f14528 100644
--- a/networking/libiproute/rt_names.c
+++ b/networking/libiproute/rt_names.c
@@ -88,21 +88,20 @@ static void rtnl_rtprot_initialize(void)
         rtnl_tab_initialize("/etc/iproute2/rt_protos", rtnl_rtprot_tab->tab);
 }
 
-const char* FAST_FUNC rtnl_rtprot_n2a(int id, char *buf)
+#if 0 /* UNUSED */
+const char* FAST_FUNC rtnl_rtprot_n2a(int id)
 {
         if (id < 0 || id >= 256) {
-                sprintf(buf, "%d", id);
-                return buf;
+                return itoa(id);
         }
 
         rtnl_rtprot_initialize();
 
         if (rtnl_rtprot_tab->tab[id])
                 return rtnl_rtprot_tab->tab[id];
-        /* buf is SPRINT_BSIZE big */
-        sprintf(buf, "%d", id);
-        return buf;
+        return itoa(id);
 }
+#endif
 
 int FAST_FUNC rtnl_rtprot_a2n(uint32_t *id, char *arg)
 {
@@ -126,20 +125,17 @@ static void rtnl_rtscope_initialize(void)
         rtnl_tab_initialize("/etc/iproute2/rt_scopes", rtnl_rtscope_tab->tab);
 }
 
-const char* FAST_FUNC rtnl_rtscope_n2a(int id, char *buf)
+const char* FAST_FUNC rtnl_rtscope_n2a(int id)
 {
         if (id < 0 || id >= 256) {
-                sprintf(buf, "%d", id);
-                return buf;
+                return itoa(id);
         }
 
         rtnl_rtscope_initialize();
 
         if (rtnl_rtscope_tab->tab[id])
                 return rtnl_rtscope_tab->tab[id];
-        /* buf is SPRINT_BSIZE big */
-        sprintf(buf, "%d", id);
-        return buf;
+        return itoa(id);
 }
 
 int FAST_FUNC rtnl_rtscope_a2n(uint32_t *id, char *arg)
@@ -166,20 +162,17 @@ int FAST_FUNC rtnl_rtrealm_a2n(uint32_t *id, char *arg)
 }
 
 #if ENABLE_FEATURE_IP_RULE
-const char* FAST_FUNC rtnl_rtrealm_n2a(int id, char *buf)
+const char* FAST_FUNC rtnl_rtrealm_n2a(int id)
 {
         if (id < 0 || id >= 256) {
-                sprintf(buf, "%d", id);
-                return buf;
+                return itoa(id);
         }
 
         rtnl_rtrealm_initialize();
 
         if (rtnl_rtrealm_tab->tab[id])
                 return rtnl_rtrealm_tab->tab[id];
-        /* buf is SPRINT_BSIZE big */
-        sprintf(buf, "%d", id);
-        return buf;
+        return itoa(id);
 }
 #endif
 
@@ -194,20 +187,17 @@ static void rtnl_rtdsfield_initialize(void)
         rtnl_tab_initialize("/etc/iproute2/rt_dsfield", rtnl_rtdsfield_tab->tab);
 }
 
-const char* FAST_FUNC rtnl_dsfield_n2a(int id, char *buf)
+const char* FAST_FUNC rtnl_dsfield_n2a(int id)
 {
         if (id < 0 || id >= 256) {
-                sprintf(buf, "%d", id);
-                return buf;
+                return itoa(id);
         }
 
         rtnl_rtdsfield_initialize();
 
         if (rtnl_rtdsfield_tab->tab[id])
                 return rtnl_rtdsfield_tab->tab[id];
-        /* buf is SPRINT_BSIZE big */
-        sprintf(buf, "0x%02x", id);
-        return buf;
+        return itoa(id);
 }
 
 int FAST_FUNC rtnl_dsfield_a2n(uint32_t *id, char *arg)
@@ -231,20 +221,17 @@ static void rtnl_rttable_initialize(void)
         rtnl_tab_initialize("/etc/iproute2/rt_tables", rtnl_rttable_tab->tab);
 }
 
-const char* FAST_FUNC rtnl_rttable_n2a(int id, char *buf)
+const char* FAST_FUNC rtnl_rttable_n2a(int id)
 {
         if (id < 0 || id >= 256) {
-                sprintf(buf, "%d", id);
-                return buf;
+                return itoa(id);
         }
 
         rtnl_rttable_initialize();
 
         if (rtnl_rttable_tab->tab[id])
                 return rtnl_rttable_tab->tab[id];
-        /* buf is SPRINT_BSIZE big */
-        sprintf(buf, "%d", id);
-        return buf;
+        return itoa(id);
 }
 
 int FAST_FUNC rtnl_rttable_a2n(uint32_t *id, char *arg)
diff --git a/networking/libiproute/rt_names.h b/networking/libiproute/rt_names.h
index e73aa851c..29932d6a4 100644
--- a/networking/libiproute/rt_names.h
+++ b/networking/libiproute/rt_names.h
@@ -4,12 +4,11 @@
 
 PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
-/* buf is SPRINT_BSIZE big */
-extern const char* rtnl_rtprot_n2a(int id, char *buf) FAST_FUNC;
-extern const char* rtnl_rtscope_n2a(int id, char *buf) FAST_FUNC;
-extern const char* rtnl_rtrealm_n2a(int id, char *buf) FAST_FUNC;
-extern const char* rtnl_dsfield_n2a(int id, char *buf) FAST_FUNC;
-extern const char* rtnl_rttable_n2a(int id, char *buf) FAST_FUNC;
+extern const char* rtnl_rtprot_n2a(int id) FAST_FUNC;
+extern const char* rtnl_rtscope_n2a(int id) FAST_FUNC;
+extern const char* rtnl_rtrealm_n2a(int id) FAST_FUNC;
+extern const char* rtnl_dsfield_n2a(int id) FAST_FUNC;
+extern const char* rtnl_rttable_n2a(int id) FAST_FUNC;
 extern int rtnl_rtprot_a2n(uint32_t *id, char *arg) FAST_FUNC;
 extern int rtnl_rtscope_a2n(uint32_t *id, char *arg) FAST_FUNC;
 extern int rtnl_rtrealm_a2n(uint32_t *id, char *arg) FAST_FUNC;
diff --git a/networking/libiproute/rtm_map.c b/networking/libiproute/rtm_map.c
index 3bab53baf..c763da049 100644
--- a/networking/libiproute/rtm_map.c
+++ b/networking/libiproute/rtm_map.c
@@ -12,7 +12,7 @@
 #include "rt_names.h"
 #include "utils.h"
 
-const char* FAST_FUNC rtnl_rtntype_n2a(int id, char *buf)
+const char* FAST_FUNC rtnl_rtntype_n2a(int id)
 {
         switch (id) {
         case RTN_UNSPEC:
@@ -40,9 +40,7 @@ const char* FAST_FUNC rtnl_rtntype_n2a(int id, char *buf)
         case RTN_XRESOLVE:
                 return "xresolve";
         default:
-                /* buf is SPRINT_BSIZE big */
-                sprintf(buf, "%d", id);
-                return buf;
+                return itoa(id);
         }
 }
 
diff --git a/networking/libiproute/rtm_map.h b/networking/libiproute/rtm_map.h
index 4377bd590..63b665169 100644
--- a/networking/libiproute/rtm_map.h
+++ b/networking/libiproute/rtm_map.h
@@ -4,7 +4,7 @@
 
 PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
-const char *rtnl_rtntype_n2a(int id, char *buf) FAST_FUNC;
+const char *rtnl_rtntype_n2a(int id) FAST_FUNC;
 int rtnl_rtntype_a2n(int *id, char *arg) FAST_FUNC;
 
 int get_rt_realms(uint32_t *realms, char *arg) FAST_FUNC;