udev: net-config - allow interface names to be set from the hwdb

[elogind.git] / src / udev / net / link-config.c

diff --git a/src/udev/net/link-config.c b/src/udev/net/link-config.c
index e6618b8cbfc99d742c463c9739eaca8074e41b35..d05b9099132b637dc212c6f645e5c7a1f570b352 100644 (file)
--- a/src/udev/net/link-config.c
+++ b/src/udev/net/link-config.c
@@ -50,10 +50,18 @@ struct link_config_ctx {
 
         sd_rtnl *rtnl;
 
-        char **link_dirs;
         usec_t link_dirs_ts_usec;
 };
 
+static const char* const link_dirs[] = {
+        "/etc/systemd/network",
+        "/run/systemd/network",
+        "/usr/lib/systemd/network",
+#ifdef HAVE_SPLIT_USR
+        "/lib/systemd/network",
+#endif
+        NULL};
+
 DEFINE_TRIVIAL_CLEANUP_FUNC(link_config_ctx*, link_config_ctx_free);
 #define _cleanup_link_config_ctx_free_ _cleanup_(link_config_ctx_freep)
 
@@ -73,23 +81,6 @@ int link_config_ctx_new(link_config_ctx **ret) {
 
         ctx->enable_name_policy = true;
 
-        ctx->link_dirs = strv_new("/etc/systemd/network",
-                                  "/run/systemd/network",
-                                  "/usr/lib/systemd/network",
-#ifdef HAVE_SPLIT_USR
-                                  "/lib/systemd/network",
-#endif
-                                  NULL);
-        if (!ctx->link_dirs) {
-                log_error("failed to build link config directory array");
-                return -ENOMEM;
-        }
-
-        if (!path_strv_canonicalize_uniq(ctx->link_dirs)) {
-                log_error("failed to canonicalize link config directories\n");
-                return -ENOMEM;
-        }
-
         *ret = ctx;
         ctx = NULL;
 
@@ -140,7 +131,6 @@ void link_config_ctx_free(link_config_ctx *ctx) {
 
         sd_rtnl_unref(ctx->rtnl);
 
-        strv_free(ctx->link_dirs);
         link_configs_free(ctx);
 
         free(ctx);
@@ -224,9 +214,9 @@ int link_config_load(link_config_ctx *ctx) {
         }
 
         /* update timestamp */
-        paths_check_timestamp(ctx->link_dirs, &ctx->link_dirs_ts_usec, true);
+        paths_check_timestamp(link_dirs, &ctx->link_dirs_ts_usec, true);
 
-        r = conf_files_list_strv(&files, ".link", NULL, (const char **)ctx->link_dirs);
+        r = conf_files_list_strv(&files, ".link", NULL, link_dirs);
         if (r < 0) {
                 log_error("failed to enumerate link files: %s", strerror(-r));
                 return r;
@@ -242,7 +232,7 @@ int link_config_load(link_config_ctx *ctx) {
 }
 
 bool link_config_should_reload(link_config_ctx *ctx) {
-        return paths_check_timestamp(ctx->link_dirs, &ctx->link_dirs_ts_usec, false);
+        return paths_check_timestamp(link_dirs, &ctx->link_dirs_ts_usec, false);
 }
 
 int link_config_get(link_config_ctx *ctx, struct udev_device *device, link_config **ret) {
@@ -254,7 +244,7 @@ int link_config_get(link_config_ctx *ctx, struct udev_device *device, link_confi
                                      link->match_driver, link->match_type, NULL,
                                      udev_device_get_sysattr_value(device, "address"),
                                      udev_device_get_property_value(device, "ID_PATH"),
-                                     udev_device_get_driver(device),
+                                     udev_device_get_driver(udev_device_get_parent(device)),
                                      udev_device_get_devtype(device),
                                      NULL)) {
                         log_debug("Config file %s applies to device %s",
@@ -393,6 +383,9 @@ int link_config_apply(link_config_ctx *ctx, link_config *config, struct udev_dev
 
                 for (policy = config->name_policy; !new_name && *policy != _NAMEPOLICY_INVALID; policy++) {
                         switch (*policy) {
+                                case NAMEPOLICY_DATABASE:
+                                        new_name = udev_device_get_property_value(device, "ID_NET_NAME_FROM_DATABASE");
+                                        break;
                                 case NAMEPOLICY_ONBOARD:
                                         new_name = udev_device_get_property_value(device, "ID_NET_NAME_ONBOARD");
                                         break;
@@ -457,6 +450,7 @@ DEFINE_STRING_TABLE_LOOKUP(mac_policy, MACPolicy);
 DEFINE_CONFIG_PARSE_ENUM(config_parse_mac_policy, mac_policy, MACPolicy, "Failed to parse MAC address policy");
 
 static const char* const name_policy_table[] = {
+        [NAMEPOLICY_DATABASE] = "database",
         [NAMEPOLICY_ONBOARD] = "onboard",
         [NAMEPOLICY_SLOT] = "slot",
         [NAMEPOLICY_PATH] = "path",