network: add support for dropping address

[elogind.git] / src / network / networkd-address.c

diff --git a/src/network/networkd-address.c b/src/network/networkd-address.c
index 0555d317a40549f86cbf501a11601ac1705be2c5..c0cc1287aa3a48532a26cc5a2d7ee653bea33347 100644 (file)
--- a/src/network/networkd-address.c
+++ b/src/network/networkd-address.c
@@ -74,6 +74,45 @@ void address_free(Address *address) {
         free(address);
 }
 
+int address_drop(Address *address, Link *link,
+                 sd_rtnl_message_handler_t callback) {
+        _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
+        int r;
+
+        assert(address);
+        assert(address->family == AF_INET || address->family == AF_INET6);
+        assert(link);
+        assert(link->ifindex > 0);
+        assert(link->manager);
+        assert(link->manager->rtnl);
+
+        r = sd_rtnl_message_addr_new(RTM_DELADDR, link->ifindex,
+                        address->family, address->prefixlen, 0, 0, &req);
+        if (r < 0) {
+                log_error("Could not allocate RTM_DELADDR message: %s",
+                          strerror(-r));
+                return r;
+        }
+
+        if (address->family == AF_INET)
+                r = sd_rtnl_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in);
+        else if (address->family == AF_INET6)
+                r = sd_rtnl_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6);
+        if (r < 0) {
+                log_error("Could not append IFA_LOCAL attribute: %s",
+                          strerror(-r));
+                return r;
+        }
+
+        r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
+        if (r < 0) {
+                log_error("Could not send rtnetlink message: %s", strerror(-r));
+                return r;
+        }
+
+        return 0;
+}
+
 int address_configure(Address *address, Link *link,
                       sd_rtnl_message_handler_t callback) {
         _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
@@ -95,7 +134,10 @@ int address_configure(Address *address, Link *link,
                 return r;
         }
 
-        r = sd_rtnl_message_append(req, IFA_LOCAL, &address->in_addr);
+        if (address->family == AF_INET)
+                r = sd_rtnl_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in);
+        else if (address->family == AF_INET6)
+                r = sd_rtnl_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6);
         if (r < 0) {
                 log_error("Could not append IFA_LOCAL attribute: %s",
                           strerror(-r));
@@ -107,7 +149,7 @@ int address_configure(Address *address, Link *link,
 
                 broadcast.s_addr = address->in_addr.in.s_addr | address->netmask.s_addr;
 
-                r = sd_rtnl_message_append(req, IFA_BROADCAST, &broadcast);
+                r = sd_rtnl_message_append_in_addr(req, IFA_BROADCAST, &broadcast);
                 if (r < 0) {
                         log_error("Could not append IFA_BROADCAST attribute: %s",
                                   strerror(-r));
@@ -116,7 +158,7 @@ int address_configure(Address *address, Link *link,
         }
 
         if (address->label) {
-                r = sd_rtnl_message_append(req, IFA_LABEL, address->label);
+                r = sd_rtnl_message_append_string(req, IFA_LABEL, address->label);
                 if (r < 0) {
                         log_error("Could not append IFA_LABEL attribute: %s",
                                   strerror(-r));
@@ -155,6 +197,12 @@ int config_parse_address(const char *unit,
         assert(rvalue);
         assert(data);
 
+        if (streq(section, "Network")) {
+                /* we are not in an Address section, so treat
+                 * this as the special '0' section */
+                section_line = 0;
+        }
+
         r = address_new(network, section_line, &n);
         if (r < 0)
                 return r;