tree-wide: drop 'This file is part of systemd' blurb

[thirdparty/systemd.git] / src / network / networkd-util.c

diff --git a/src/network/networkd-util.c b/src/network/networkd-util.c
index 2545621a93d448c17a955eb2d24e8fe107c6b039..782e86a943fe7c32b32210d5932b1fa8e61b1735 100644 (file)
--- a/src/network/networkd-util.c
+++ b/src/network/networkd-util.c
@@ -1,24 +1,9 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /***
-  This file is part of systemd.
-
   Copyright 2013 Tom Gundersen <teg@jklm.no>
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include "condition.h"
 #include "conf-parser.h"
 #include "networkd-util.h"
 #include "parse-util.h"
@@ -27,8 +12,7 @@
 #include "util.h"
 
 const char *address_family_boolean_to_string(AddressFamilyBoolean b) {
-        if (b == ADDRESS_FAMILY_YES ||
-            b == ADDRESS_FAMILY_NO)
+        if (IN_SET(b, ADDRESS_FAMILY_YES, ADDRESS_FAMILY_NO))
                 return yes_no(b == ADDRESS_FAMILY_YES);
 
         if (b == ADDRESS_FAMILY_IPV4)
@@ -102,53 +86,22 @@ int config_parse_address_family_boolean_with_kernel(
         return 0;
 }
 
-static const char* const resolve_support_table[_RESOLVE_SUPPORT_MAX] = {
-        [RESOLVE_SUPPORT_NO] = "no",
-        [RESOLVE_SUPPORT_YES] = "yes",
-        [RESOLVE_SUPPORT_RESOLVE] = "resolve",
-};
-
-DEFINE_STRING_TABLE_LOOKUP(resolve_support, ResolveSupport);
-
-int config_parse_resolve(
-                const char* unit,
-                const char *filename,
-                unsigned line,
-                const char *section,
-                unsigned section_line,
-                const char *lvalue,
-                int ltype,
-                const char *rvalue,
-                void *data,
-                void *userdata) {
-
-        ResolveSupport *resolve = data;
-        int k;
+/* Router lifetime can be set with netlink interface since kernel >= 4.5
+ * so for the supported kernel we dont need to expire routes in userspace */
+int kernel_route_expiration_supported(void) {
+        static int cached = -1;
+        int r;
 
-        assert(filename);
-        assert(lvalue);
-        assert(rvalue);
-        assert(resolve);
-
-        /* Our enum shall be a superset of booleans, hence first try
-         * to parse as boolean, and then as enum */
-
-        k = parse_boolean(rvalue);
-        if (k > 0)
-                *resolve = RESOLVE_SUPPORT_YES;
-        else if (k == 0)
-                *resolve = RESOLVE_SUPPORT_NO;
-        else {
-                ResolveSupport s;
-
-                s = resolve_support_from_string(rvalue);
-                if (s < 0){
-                        log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse %s= option, ignoring: %s", lvalue, rvalue);
-                        return 0;
-                }
+        if (cached < 0) {
+                Condition c = {
+                        .type = CONDITION_KERNEL_VERSION,
+                        .parameter = (char *) ">= 4.5"
+                };
+                r = condition_test(&c);
+                if (r < 0)
+                        return r;
 
-                *resolve = s;
+                cached = r;
         }
-
-        return 0;
+        return cached;
 }