Merge pull request #12392 from poettering/firstboot-salt

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

diff --git a/src/network/networkd-util.c b/src/network/networkd-util.c
index 8856e762690574f32a6de64cefdeb7a264cf82d4..d01de53f7be70a16407732818b9dd2161577b593 100644 (file)
--- a/src/network/networkd-util.c
+++ b/src/network/networkd-util.c
@@ -1,22 +1,6 @@
-/***
-  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/>.
-***/
+/* SPDX-License-Identifier: LGPL-2.1+ */
 
+#include "condition.h"
 #include "conf-parser.h"
 #include "networkd-util.h"
 #include "parse-util.h"
@@ -24,38 +8,26 @@
 #include "string-util.h"
 #include "util.h"
 
-const char *address_family_boolean_to_string(AddressFamilyBoolean b) {
-        if (IN_SET(b, ADDRESS_FAMILY_YES, ADDRESS_FAMILY_NO))
-                return yes_no(b == ADDRESS_FAMILY_YES);
-
-        if (b == ADDRESS_FAMILY_IPV4)
-                return "ipv4";
-        if (b == ADDRESS_FAMILY_IPV6)
-                return "ipv6";
-
-        return NULL;
-}
-
-AddressFamilyBoolean address_family_boolean_from_string(const char *s) {
-        int r;
-
-        /* Make this a true superset of a boolean */
-
-        r = parse_boolean(s);
-        if (r > 0)
-                return ADDRESS_FAMILY_YES;
-        if (r == 0)
-                return ADDRESS_FAMILY_NO;
-
-        if (streq(s, "ipv4"))
-                return ADDRESS_FAMILY_IPV4;
-        if (streq(s, "ipv6"))
-                return ADDRESS_FAMILY_IPV6;
-
-        return _ADDRESS_FAMILY_BOOLEAN_INVALID;
-}
-
-DEFINE_CONFIG_PARSE_ENUM(config_parse_address_family_boolean, address_family_boolean, AddressFamilyBoolean, "Failed to parse option");
+static const char * const address_family_boolean_table[_ADDRESS_FAMILY_BOOLEAN_MAX] = {
+        [ADDRESS_FAMILY_NO]            = "no",
+        [ADDRESS_FAMILY_YES]           = "yes",
+        [ADDRESS_FAMILY_IPV4]          = "ipv4",
+        [ADDRESS_FAMILY_IPV6]          = "ipv6",
+};
+
+static const char * const link_local_address_family_boolean_table[_ADDRESS_FAMILY_BOOLEAN_MAX] = {
+        [ADDRESS_FAMILY_NO]            = "no",
+        [ADDRESS_FAMILY_YES]           = "yes",
+        [ADDRESS_FAMILY_IPV4]          = "ipv4",
+        [ADDRESS_FAMILY_IPV6]          = "ipv6",
+        [ADDRESS_FAMILY_FALLBACK]      = "fallback",
+        [ADDRESS_FAMILY_FALLBACK_IPV4] = "ipv4-fallback",
+};
+
+DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(address_family_boolean, AddressFamilyBoolean, ADDRESS_FAMILY_YES);
+DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(link_local_address_family_boolean, AddressFamilyBoolean, ADDRESS_FAMILY_YES);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_link_local_address_family_boolean, link_local_address_family_boolean,
+                         AddressFamilyBoolean, "Failed to parse option");
 
 int config_parse_address_family_boolean_with_kernel(
                 const char* unit,
@@ -78,7 +50,7 @@ int config_parse_address_family_boolean_with_kernel(
 
         /* This function is mostly obsolete now. It simply redirects
          * "kernel" to "no". In older networkd versions we used to
-         * distuingish IPForward=off from IPForward=kernel, where the
+         * distinguish IPForward=off from IPForward=kernel, where the
          * former would explicitly turn off forwarding while the
          * latter would simply not touch the setting. But that logic
          * is gone, hence silently accept the old setting, but turn it
@@ -98,3 +70,59 @@ int config_parse_address_family_boolean_with_kernel(
 
         return 0;
 }
+
+/* Router lifetime can be set with netlink interface since kernel >= 4.5
+ * so for the supported kernel we don't need to expire routes in userspace */
+int kernel_route_expiration_supported(void) {
+        static int cached = -1;
+        int r;
+
+        if (cached < 0) {
+                Condition c = {
+                        .type = CONDITION_KERNEL_VERSION,
+                        .parameter = (char *) ">= 4.5"
+                };
+                r = condition_test(&c);
+                if (r < 0)
+                        return r;
+
+                cached = r;
+        }
+        return cached;
+}
+
+static void network_config_hash_func(const NetworkConfigSection *c, struct siphash *state) {
+        siphash24_compress(c->filename, strlen(c->filename), state);
+        siphash24_compress(&c->line, sizeof(c->line), state);
+}
+
+static int network_config_compare_func(const NetworkConfigSection *x, const NetworkConfigSection *y) {
+        int r;
+
+        r = strcmp(x->filename, y->filename);
+        if (r != 0)
+                return r;
+
+        return CMP(x->line, y->line);
+}
+
+DEFINE_HASH_OPS(network_config_hash_ops, NetworkConfigSection, network_config_hash_func, network_config_compare_func);
+
+int network_config_section_new(const char *filename, unsigned line, NetworkConfigSection **s) {
+        NetworkConfigSection *cs;
+
+        cs = malloc0(offsetof(NetworkConfigSection, filename) + strlen(filename) + 1);
+        if (!cs)
+                return -ENOMEM;
+
+        strcpy(cs->filename, filename);
+        cs->line = line;
+
+        *s = TAKE_PTR(cs);
+
+        return 0;
+}
+
+void network_config_section_free(NetworkConfigSection *cs) {
+        free(cs);
+}