resolvectl: minor optimizations to allocate less

diff --git a/src/resolve/resolvectl.c b/src/resolve/resolvectl.c
index 2dceaa5d2150617088bf4ed3d2f830396a40e2db..df40349e6622d312bbb033f5749cf1441b147978 100644 (file)
--- a/src/resolve/resolvectl.c
+++ b/src/resolve/resolvectl.c
@@ -27,6 +27,7 @@
 #include "resolved-def.h"
 #include "resolved-dns-packet.h"
 #include "socket-netlink.h"
+#include "stdio-util.h"
 #include "string-table.h"
 #include "strv.h"
 #include "terminal-util.h"
@@ -1382,8 +1383,8 @@ static int status_ifindex(sd_bus *bus, int ifindex, const char *name, StatusMode
         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
         _cleanup_(link_info_clear) struct link_info link_info = {};
-        _cleanup_free_ char *ifi = NULL, *p = NULL;
-        char ifname[IF_NAMESIZE + 1] = "";
+        _cleanup_free_ char *p = NULL;
+        char ifi[DECIMAL_STR_MAX(int)], ifname[IF_NAMESIZE + 1] = "";
         char **i;
         int r;
 
@@ -1397,9 +1398,7 @@ static int status_ifindex(sd_bus *bus, int ifindex, const char *name, StatusMode
                 name = ifname;
         }
 
-        if (asprintf(&ifi, "%i", ifindex) < 0)
-                return log_oom();
-
+        xsprintf(ifi, "%i", ifindex);
         r = sd_bus_path_encode("/org/freedesktop/resolve1/link", ifi, &p);
         if (r < 0)
                 return log_oom();
@@ -1819,6 +1818,7 @@ static int status_all(sd_bus *bus, StatusMode mode) {
 
 static int verb_status(int argc, char **argv, void *userdata) {
         sd_bus *bus = userdata;
+        _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
         int r = 0;
 
         if (argc > 1) {
@@ -1828,7 +1828,7 @@ static int verb_status(int argc, char **argv, void *userdata) {
                 STRV_FOREACH(ifname, argv + 1) {
                         int ifindex, q;
 
-                        ifindex = resolve_interface(NULL, *ifname);
+                        ifindex = resolve_interface(&rtnl, *ifname);
                         if (ifindex < 0) {
                                 log_warning_errno(ifindex, "Failed to resolve interface \"%s\", ignoring: %m", *ifname);
                                 continue;