udev: link-config - less verbose logging

[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 cf966bfe372f3d587adb69835ffeff992cff88dd..b26825427625e46b9397c2e3e8896edf29fc2fb8 100644 (file)
--- a/src/udev/net/link-config.c
+++ b/src/udev/net/link-config.c
@@ -44,6 +44,8 @@ struct link_config_ctx {
 
         int ethtool_fd;
 
+        bool enable_name_policy;
+
         sd_rtnl *rtnl;
 
         char **link_dirs;
@@ -67,6 +69,8 @@ int link_config_ctx_new(link_config_ctx **ret) {
 
         ctx->ethtool_fd = -1;
 
+        ctx->enable_name_policy = true;
+
         ctx->link_dirs = strv_new("/etc/systemd/network",
                                   "/run/systemd/network",
                                   "/usr/lib/systemd/network",
@@ -181,12 +185,37 @@ failure:
         return r;
 }
 
+static bool enable_name_policy(void) {
+        _cleanup_free_ char *line;
+        char *w, *state;
+        int r;
+        size_t l;
+
+        r = read_one_line_file("/proc/cmdline", &line);
+        if (r < 0) {
+                log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
+                return true; /* something is very wrong, let's not make it worse */
+        }
+
+        FOREACH_WORD_QUOTED(w, l, line, state)
+                if (strneq(w, "net.ifnames=0", l))
+                        return false;
+
+        return true;
+}
+
 int link_config_load(link_config_ctx *ctx) {
         int r;
         char **files, **f;
 
         link_configs_free(ctx);
 
+
+        if (!enable_name_policy()) {
+                ctx->enable_name_policy = false;
+                log_info("Network interface NamePolicy= disabled on kernel commandline, ignoring.");
+        }
+
         /* update timestamp */
         paths_check_timestamp(ctx->link_dirs, &ctx->link_dirs_ts_usec, true);
 
@@ -255,10 +284,8 @@ int link_config_get(link_config_ctx *ctx, struct udev_device *device, link_confi
         link_config *link;
 
         LIST_FOREACH(links, link, ctx->links) {
-                if (!match_config(link, device)) {
-                        log_info("Config file %s does not apply to device %s", link->filename, udev_device_get_sysname(device));
-                } else {
-                        log_info("Config file %s applies to device %s", link->filename, udev_device_get_sysname(device));
+                if (match_config(link, device)) {
+                        log_debug("Config file %s applies to device %s", link->filename, udev_device_get_sysname(device));
                         *ret = link;
                         return 0;
                 }
@@ -267,25 +294,6 @@ int link_config_get(link_config_ctx *ctx, struct udev_device *device, link_confi
         return -ENOENT;
 }
 
-static bool enable_name_policy(void) {
-        _cleanup_free_ char *line;
-        char *w, *state;
-        int r;
-        size_t l;
-
-        r = read_one_line_file("/proc/cmdline", &line);
-        if (r < 0) {
-                log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
-                return true; /* something is very wrong, let's not make it worse */
-        }
-
-        FOREACH_WORD_QUOTED(w, l, line, state)
-                if (strneq(w, "net.ifnames=0", l))
-                        return false;
-
-        return true;
-}
-
 static bool mac_is_random(struct udev_device *device) {
         const char *s;
         unsigned type;
@@ -365,40 +373,43 @@ static int get_mac(struct udev_device *device, bool want_random, struct ether_ad
         return 0;
 }
 
-int link_config_apply(link_config_ctx *ctx, link_config *config, struct udev_device *device) {
-        const char *name;
+int link_config_apply(link_config_ctx *ctx, link_config *config, struct udev_device *device, const char **name) {
+        const char *old_name;
         const char *new_name = NULL;
         struct ether_addr generated_mac;
         struct ether_addr *mac = NULL;
         int r, ifindex;
 
+        assert(ctx);
+        assert(config);
+        assert(device);
+        assert(name);
+
         r = link_config_ctx_connect(ctx);
         if (r < 0)
                 return r;
 
-        name = udev_device_get_sysname(device);
-        if (!name)
+        old_name = udev_device_get_sysname(device);
+        if (!old_name)
                 return -EINVAL;
 
-        log_info("Configuring %s", name);
-
         if (config->description) {
                 r = udev_device_set_sysattr_value(device, "ifalias",
                                                   config->description);
                 if (r < 0)
                         log_warning("Could not set description of %s to '%s': %s",
-                                    name, config->description, strerror(-r));
+                                    old_name, config->description, strerror(-r));
         }
 
-        r = ethtool_set_speed(ctx->ethtool_fd, name, config->speed, config->duplex);
+        r = ethtool_set_speed(ctx->ethtool_fd, old_name, config->speed, config->duplex);
         if (r < 0)
                 log_warning("Could not set speed or duplex of %s to %u Mbytes (%s): %s",
-                             name, config->speed, duplex_to_string(config->duplex), strerror(-r));
+                             old_name, config->speed, duplex_to_string(config->duplex), strerror(-r));
 
-        r = ethtool_set_wol(ctx->ethtool_fd, name, config->wol);
+        r = ethtool_set_wol(ctx->ethtool_fd, old_name, config->wol);
         if (r < 0)
                 log_warning("Could not set WakeOnLan of %s to %s: %s",
-                            name, wol_to_string(config->wol), strerror(-r));
+                            old_name, wol_to_string(config->wol), strerror(-r));
 
         ifindex = udev_device_get_ifindex(device);
         if (ifindex <= 0) {
@@ -406,7 +417,7 @@ int link_config_apply(link_config_ctx *ctx, link_config *config, struct udev_dev
                 return -ENODEV;
         }
 
-        if (config->name_policy && enable_name_policy()) {
+        if (ctx->enable_name_policy && config->name_policy) {
                 NamePolicy *policy;
 
                 for (policy = config->name_policy; !new_name && *policy != _NAMEPOLICY_INVALID; policy++) {
@@ -429,9 +440,12 @@ int link_config_apply(link_config_ctx *ctx, link_config *config, struct udev_dev
                 }
         }
 
-        if (!new_name && config->name) {
-                new_name = config->name;
-        }
+        if (new_name)
+                *name = new_name; /* a name was set by a policy */
+        else if (config->name)
+                *name = config->name; /* a name was set manually in the config */
+        else
+                *name = NULL;
 
         switch (config->mac_policy) {
                 case MACPOLICY_PERSISTENT:
@@ -454,9 +468,9 @@ int link_config_apply(link_config_ctx *ctx, link_config *config, struct udev_dev
                         mac = config->mac;
         }
 
-        r = rtnl_set_link_properties(ctx->rtnl, ifindex, new_name, mac, config->mtu);
+        r = rtnl_set_link_properties(ctx->rtnl, ifindex, mac, config->mtu);
         if (r < 0) {
-                log_warning("Could not set Name, MACAddress or MTU on %s: %s", name, strerror(-r));
+                log_warning("Could not set MACAddress or MTU on %s: %s", old_name, strerror(-r));
                 return r;
         }