X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fnetwork%2Fnetworkd-network.c;h=bbc6475df059f272dba9be765366b681e17c75b4;hp=f2546440cf55eb8e9fd32af665a2f6cf45e4b9b6;hb=32bc8adcd836baff68e4d0f53b9a382f358cccf8;hpb=f46685a4c0780173e5291fb7c3caa1c35cb1d0af

diff --git a/src/network/networkd-network.c b/src/network/networkd-network.c
index f2546440c..bbc6475df 100644
--- a/src/network/networkd-network.c
+++ b/src/network/networkd-network.c
@@ -19,8 +19,13 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <ctype.h>
+#include <net/if.h>
+
 #include "networkd.h"
-#include "net-util.h"
+#include "networkd-netdev.h"
+#include "networkd-link.h"
+#include "network-internal.h"
 #include "path-util.h"
 #include "conf-files.h"
 #include "conf-parser.h"
@@ -41,7 +46,12 @@ static int network_load_one(Manager *manager, const char *filename) {
                 if (errno == ENOENT)
                         return 0;
                 else
-                        return errno;
+                        return -errno;
+        }
+
+        if (null_or_empty_fd(fileno(file))) {
+                log_debug("Skipping empty file: %s", filename);
+                return 0;
         }
 
         network = new0(Network, 1);
@@ -53,11 +63,15 @@ static int network_load_one(Manager *manager, const char *filename) {
         LIST_HEAD_INIT(network->static_addresses);
         LIST_HEAD_INIT(network->static_routes);
 
-        network->addresses_by_section = hashmap_new(uint64_hash_func, uint64_compare_func);
+        network->stacked_netdevs = hashmap_new(&string_hash_ops);
+        if (!network->stacked_netdevs)
+                return log_oom();
+
+        network->addresses_by_section = hashmap_new(NULL);
         if (!network->addresses_by_section)
                 return log_oom();
 
-        network->routes_by_section = hashmap_new(uint64_hash_func, uint64_compare_func);
+        network->routes_by_section = hashmap_new(NULL);
         if (!network->routes_by_section)
                 return log_oom();
 
@@ -65,30 +79,41 @@ static int network_load_one(Manager *manager, const char *filename) {
         if (!network->filename)
                 return log_oom();
 
-        r = config_parse(NULL, filename, file, "Match\0Network\0Address\0Route\0", config_item_perf_lookup,
-                        (void*) network_gperf_lookup, false, false, network);
-        if (r < 0) {
-                log_warning("Could not parse config file %s: %s", filename, strerror(-r));
+        network->dhcp = DHCP_SUPPORT_NONE;
+        network->dhcp_ntp = true;
+        network->dhcp_dns = true;
+        network->dhcp_hostname = true;
+        network->dhcp_routes = true;
+        network->dhcp_sendhost = true;
+        network->dhcp_route_metric = DHCP_ROUTE_METRIC;
+
+        network->llmnr = LLMNR_SUPPORT_YES;
+
+        r = config_parse(NULL, filename, file,
+                         "Match\0"
+                         "Link\0"
+                         "Network\0"
+                         "Address\0"
+                         "Route\0"
+                         "DHCP\0"
+                         "DHCPv4\0"
+                         "BridgePort\0",
+                         config_item_perf_lookup, network_network_gperf_lookup,
+                         false, false, true, network);
+        if (r < 0)
                 return r;
-        }
 
         LIST_PREPEND(networks, manager->networks, network);
 
-        LIST_FOREACH(static_routes, route, network->static_routes) {
+        LIST_FOREACH(routes, route, network->static_routes) {
                 if (!route->family) {
                         log_warning("Route section without Gateway field configured in %s. "
                                     "Ignoring", filename);
                         return 0;
                 }
-
-                if (route->dst_family && route->family != route->dst_family) {
-                        log_warning("Route section with conflicting Gateway and Destination address "
-                                    "family configured in %s. Ignoring", filename);
-                        return 0;
-                }
         }
 
-        LIST_FOREACH(static_addresses, address, network->static_addresses) {
+        LIST_FOREACH(addresses, address, network->static_addresses) {
                 if (!address->family) {
                         log_warning("Address section without Address field configured in %s. "
                                     "Ignoring", filename);
@@ -113,10 +138,8 @@ int network_load(Manager *manager) {
                 network_free(network);
 
         r = conf_files_list_strv(&files, ".network", NULL, network_dirs);
-        if (r < 0) {
-                log_error("Failed to enumerate network files: %s", strerror(-r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to enumerate network files: %m");
 
         STRV_FOREACH_BACKWARDS(f, files) {
                 r = network_load_one(manager, *f);
@@ -128,8 +151,10 @@ int network_load(Manager *manager) {
 }
 
 void network_free(Network *network) {
+        NetDev *netdev;
         Route *route;
         Address *address;
+        Iterator i;
 
         if (!network)
                 return;
@@ -143,6 +168,23 @@ void network_free(Network *network) {
         free(network->match_name);
 
         free(network->description);
+        free(network->dhcp_vendor_class_identifier);
+
+        free(network->mac);
+
+        strv_free(network->ntp);
+        strv_free(network->dns);
+        strv_free(network->domains);
+
+        netdev_unref(network->bridge);
+
+        netdev_unref(network->bond);
+
+        HASHMAP_FOREACH(netdev, network->stacked_netdevs, i) {
+                hashmap_remove(network->stacked_netdevs, netdev->ifname);
+                netdev_unref(netdev);
+        }
+        hashmap_free(network->stacked_netdevs);
 
         while ((route = network->static_routes))
                 route_free(route);
@@ -156,28 +198,49 @@ void network_free(Network *network) {
         if (network->manager && network->manager->networks)
                 LIST_REMOVE(networks, network->manager->networks, network);
 
+        condition_free_list(network->match_host);
+        condition_free_list(network->match_virt);
+        condition_free_list(network->match_kernel);
+        condition_free_list(network->match_arch);
+
         free(network);
 }
 
-int network_get(Manager *manager, struct udev_device *device, Network **ret) {
+int network_get(Manager *manager, struct udev_device *device,
+                const char *ifname, const struct ether_addr *address,
+                Network **ret) {
         Network *network;
 
         assert(manager);
-        assert(device);
         assert(ret);
 
         LIST_FOREACH(networks, network, manager->networks) {
                 if (net_match_config(network->match_mac, network->match_path,
-                                        network->match_driver, network->match_type,
-                                        network->match_name,
-                                        udev_device_get_sysattr_value(device, "address"),
-                                        udev_device_get_property_value(device, "ID_PATH"),
-                                        udev_device_get_driver(device),
-                                        udev_device_get_devtype(device),
-                                        udev_device_get_sysname(device))) {
-                        log_debug("%s: found matching network '%s'",
-                                        udev_device_get_sysname(device),
-                                        network->filename);
+                                     network->match_driver, network->match_type,
+                                     network->match_name, network->match_host,
+                                     network->match_virt, network->match_kernel,
+                                     network->match_arch,
+                                     address,
+                                     udev_device_get_property_value(device, "ID_PATH"),
+                                     udev_device_get_driver(udev_device_get_parent(device)),
+                                     udev_device_get_property_value(device, "ID_NET_DRIVER"),
+                                     udev_device_get_devtype(device),
+                                     ifname)) {
+                        const char *attr;
+                        uint8_t name_assign_type = NET_NAME_UNKNOWN;
+
+                        if (network->match_name) {
+                                attr = udev_device_get_sysattr_value(device, "name_assign_type");
+                                (void)safe_atou8(attr, &name_assign_type);
+
+                                if (name_assign_type == NET_NAME_ENUM)
+                                        log_warning("%-*s: found matching network '%s', based on potentially unstable ifname",
+                                                    IFNAMSIZ, ifname, network->filename);
+                                else
+                                        log_debug("%-*s: found matching network '%s'", IFNAMSIZ, ifname, network->filename);
+                        } else
+                                log_debug("%-*s: found matching network '%s'", IFNAMSIZ, ifname, network->filename);
+
                         *ret = network;
                         return 0;
                 }
@@ -193,14 +256,36 @@ int network_apply(Manager *manager, Network *network, Link *link) {
 
         link->network = network;
 
-        r = link_configure(link);
-        if (r < 0)
-                return r;
+        if (network->ipv4ll_route) {
+                Route *route;
+
+                r = route_new_static(network, 0, &route);
+                if (r < 0)
+                        return r;
+
+                r = inet_pton(AF_INET, "169.254.0.0", &route->dst_addr.in);
+                if (r == 0)
+                        return -EINVAL;
+                if (r < 0)
+                        return -errno;
+
+                route->family = AF_INET;
+                route->dst_prefixlen = 16;
+                route->scope = RT_SCOPE_LINK;
+                route->metrics = IPV4LL_ROUTE_METRIC;
+                route->protocol = RTPROT_STATIC;
+        }
+
+        if (network->dns || network->ntp) {
+                r = link_save(link);
+                if (r < 0)
+                        return r;
+        }
 
         return 0;
 }
 
-int config_parse_bridge(const char *unit,
+int config_parse_netdev(const char *unit,
                 const char *filename,
                 unsigned line,
                 const char *section,
@@ -211,7 +296,10 @@ int config_parse_bridge(const char *unit,
                 void *data,
                 void *userdata) {
         Network *network = userdata;
-        Bridge *bridge;
+        _cleanup_free_ char *kind_string = NULL;
+        char *p;
+        NetDev *netdev;
+        NetDevKind kind;
         int r;
 
         assert(filename);
@@ -219,14 +307,252 @@ int config_parse_bridge(const char *unit,
         assert(rvalue);
         assert(data);
 
-        r = bridge_get(network->manager, rvalue, &bridge);
+        kind_string = strdup(lvalue);
+        if (!kind_string)
+                return log_oom();
+
+        /* the keys are CamelCase versions of the kind */
+        for (p = kind_string; *p; p++)
+                *p = tolower(*p);
+
+        kind = netdev_kind_from_string(kind_string);
+        if (kind == _NETDEV_KIND_INVALID) {
+                log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+                           "Invalid NetDev kind: %s", lvalue);
+                return 0;
+        }
+
+        r = netdev_get(network->manager, rvalue, &netdev);
         if (r < 0) {
                 log_syntax(unit, LOG_ERR, filename, line, EINVAL,
-                           "Bridge is invalid, ignoring assignment: %s", rvalue);
+                           "%s could not be found, ignoring assignment: %s", lvalue, rvalue);
+                return 0;
+        }
+
+        if (netdev->kind != kind) {
+                log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+                           "NetDev is not a %s, ignoring assignment: %s", lvalue, rvalue);
                 return 0;
         }
 
-        network->bridge = bridge;
+        switch (kind) {
+        case NETDEV_KIND_BRIDGE:
+                network->bridge = netdev;
+
+                break;
+        case NETDEV_KIND_BOND:
+                network->bond = netdev;
+
+                break;
+        case NETDEV_KIND_VLAN:
+        case NETDEV_KIND_MACVLAN:
+        case NETDEV_KIND_VXLAN:
+                r = hashmap_put(network->stacked_netdevs, netdev->ifname, netdev);
+                if (r < 0) {
+                        log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+                                   "Can not add VLAN '%s' to network: %s",
+                                   rvalue, strerror(-r));
+                        return 0;
+                }
+
+                break;
+        default:
+                assert_not_reached("Can not parse NetDev");
+        }
+
+        netdev_ref(netdev);
+
+        return 0;
+}
+
+int config_parse_domains(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) {
+        Network *network = userdata;
+        char ***domains = data;
+        char **domain;
+        int r;
+
+        r = config_parse_strv(unit, filename, line, section, section_line,
+                              lvalue, ltype, rvalue, domains, userdata);
+        if (r < 0)
+                return r;
+
+        strv_uniq(*domains);
+        network->wildcard_domain = !!strv_find(*domains, "*");
+
+        STRV_FOREACH(domain, *domains) {
+                if (is_localhost(*domain))
+                        log_syntax(unit, LOG_ERR, filename, line, EINVAL, "'localhost' domain names may not be configured, ignoring assignment: %s", *domain);
+                else if (!hostname_is_valid(*domain)) {
+                        if (!streq(*domain, "*"))
+                                log_syntax(unit, LOG_ERR, filename, line, EINVAL, "domain name is not valid, ignoring assignment: %s", *domain);
+                } else
+                        continue;
+
+                strv_remove(*domains, *domain);
+
+                /* We removed one entry, make sure we don't skip the next one */
+                domain--;
+        }
+
+        return 0;
+}
+
+int config_parse_tunnel(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) {
+        Network *network = userdata;
+        NetDev *netdev;
+        int r;
+
+        assert(filename);
+        assert(lvalue);
+        assert(rvalue);
+        assert(data);
+
+        r = netdev_get(network->manager, rvalue, &netdev);
+        if (r < 0) {
+                log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+                           "Tunnel is invalid, ignoring assignment: %s", rvalue);
+                return 0;
+        }
+
+        if (netdev->kind != NETDEV_KIND_IPIP &&
+            netdev->kind != NETDEV_KIND_SIT &&
+            netdev->kind != NETDEV_KIND_GRE &&
+            netdev->kind != NETDEV_KIND_VTI) {
+                log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+                           "NetDev is not a tunnel, ignoring assignment: %s", rvalue);
+                return 0;
+        }
+
+        r = hashmap_put(network->stacked_netdevs, netdev->ifname, netdev);
+        if (r < 0) {
+                log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+                           "Can not add VLAN '%s' to network: %s",
+                           rvalue, strerror(-r));
+                return 0;
+        }
+
+        netdev_ref(netdev);
+
+        return 0;
+}
+
+static const char* const dhcp_support_table[_DHCP_SUPPORT_MAX] = {
+        [DHCP_SUPPORT_NONE] = "none",
+        [DHCP_SUPPORT_BOTH] = "both",
+        [DHCP_SUPPORT_V4] = "v4",
+        [DHCP_SUPPORT_V6] = "v6",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(dhcp_support, DHCPSupport);
+
+int config_parse_dhcp(
+                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) {
+
+        DHCPSupport *dhcp = data;
+        int k;
+
+        assert(filename);
+        assert(lvalue);
+        assert(rvalue);
+        assert(data);
+
+        /* 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)
+                *dhcp = DHCP_SUPPORT_BOTH;
+        else if (k == 0)
+                *dhcp = DHCP_SUPPORT_NONE;
+        else {
+                DHCPSupport s;
+
+                s = dhcp_support_from_string(rvalue);
+                if (s < 0){
+                        log_syntax(unit, LOG_ERR, filename, line, -s, "Failed to parse DHCP option, ignoring: %s", rvalue);
+                        return 0;
+                }
+
+                *dhcp = s;
+        }
+
+        return 0;
+}
+
+static const char* const llmnr_support_table[_LLMNR_SUPPORT_MAX] = {
+        [LLMNR_SUPPORT_NO] = "no",
+        [LLMNR_SUPPORT_YES] = "yes",
+        [LLMNR_SUPPORT_RESOLVE] = "resolve",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(llmnr_support, LLMNRSupport);
+
+int config_parse_llmnr(
+                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) {
+
+        LLMNRSupport *llmnr = data;
+        int k;
+
+        assert(filename);
+        assert(lvalue);
+        assert(rvalue);
+        assert(data);
+
+        /* 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)
+                *llmnr = LLMNR_SUPPORT_YES;
+        else if (k == 0)
+                *llmnr = LLMNR_SUPPORT_NO;
+        else {
+                LLMNRSupport s;
+
+                s = llmnr_support_from_string(rvalue);
+                if (s < 0){
+                        log_syntax(unit, LOG_ERR, filename, line, -s, "Failed to parse LLMNR option, ignoring: %s", rvalue);
+                        return 0;
+                }
+
+                *llmnr = s;
+        }
 
         return 0;
 }