networkctl: add renew command

diff --git a/man/networkctl.xml b/man/networkctl.xml
index 7f68f24..842702f 100644 (file)
--- a/man/networkctl.xml
+++ b/man/networkctl.xml
@@ -289,6 +289,14 @@ s - Service VLAN, m - Two-port MAC Relay (TPMR)
         <listitem><para>Deletes virtual netdevs. Takes interface name or index number.</para></listitem>
       </varlistentry>
 
+       <varlistentry>
+        <term>
+          <command>renew</command>
+        </term>
+        <listitem><para>Renew dynamic configurations e.g. addresses received from DHCP server.
+        Takes interface name or index number.</para></listitem>
+      </varlistentry>
+
     </variablelist>
   </refsect1>
 

diff --git a/shell-completion/bash/networkctl b/shell-completion/bash/networkctl
index fdfa92d..290a62f 100644 (file)
--- a/shell-completion/bash/networkctl
+++ b/shell-completion/bash/networkctl
@@ -38,7 +38,7 @@ _networkctl() {
 
     local -A VERBS=(
         [STANDALONE]='label'
-        [LINKS]='status list lldp delete'
+        [LINKS]='status list lldp delete renew'
     )
 
     _init_completion || return

diff --git a/src/network/networkctl.c b/src/network/networkctl.c
index 5f74f7b..2deda66 100644 (file)
--- a/src/network/networkctl.c
+++ b/src/network/networkctl.c
@@ -1610,6 +1610,48 @@ static int link_delete(int argc, char *argv[], void *userdata) {
         return r;
 }
 
+static int link_renew_one(sd_bus *bus, int index, const char *name) {
+        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+        int r;
+
+        r = sd_bus_call_method(
+                        bus,
+                        "org.freedesktop.network1",
+                        "/org/freedesktop/network1",
+                        "org.freedesktop.network1.Manager",
+                        "RenewLink",
+                        &error,
+                        NULL,
+                        "i", index);
+        if (r < 0)
+                return log_error_errno(r, "Failed to renew dynamic configuration of interface %s: %s",
+                                       name, bus_error_message(&error, r));
+
+        return 0;
+}
+
+static int link_renew(int argc, char *argv[], void *userdata) {
+        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+        int index, i, k = 0, r;
+
+        r = sd_bus_open_system(&bus);
+        if (r < 0)
+                return log_error_errno(r, "Failed to connect system bus: %m");
+
+        for (i = 1; i < argc; i++) {
+                r = parse_ifindex_or_ifname(argv[i], &index);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to resolve interface %s", argv[i]);
+
+                r = link_renew_one(bus, index, argv[i]);
+                if (r < 0 && k >= 0)
+                        k = r;
+        }
+
+        return k;
+}
+
+
 static int help(void) {
         _cleanup_free_ char *link = NULL;
         int r;
@@ -1631,7 +1673,8 @@ static int help(void) {
                "  status [PATTERN...]   Show link status\n"
                "  lldp [PATTERN...]     Show LLDP neighbors\n"
                "  label                 Show current address label entries in the kernel\n"
-               "  delete DEVICES        Delete virtual netdevs\n"
+               "  delete DEVICES..      Delete virtual netdevs\n"
+               "  renew DEVICES..       Renew dynamic configurations\n"
                "\nSee the %s for details.\n"
                , program_invocation_short_name
                , link
@@ -1707,6 +1750,7 @@ static int networkctl_main(int argc, char *argv[]) {
                 { "lldp",   VERB_ANY, VERB_ANY, 0,            link_lldp_status    },
                 { "label",  VERB_ANY, VERB_ANY, 0,            list_address_labels },
                 { "delete", 2,        VERB_ANY, 0,            link_delete         },
+                { "renew",  2,        VERB_ANY, 0,            link_renew          },
                 {}
         };