187 lines
5.7 KiB
C
187 lines
5.7 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2013 Tom Gundersen <teg@jklm.no>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "networkd.h"
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#include "net-util.h"
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#include "path-util.h"
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#include "conf-files.h"
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#include "conf-parser.h"
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static int network_load_one(Manager *manager, const char *filename) {
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_cleanup_network_free_ Network *network = NULL;
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_cleanup_fclose_ FILE *file = NULL;
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int r;
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file = fopen(filename, "re");
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if (!file) {
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if (errno == ENOENT)
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return 0;
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else
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return errno;
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}
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network = new0(Network, 1);
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if (!network)
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return log_oom();
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network->manager = manager;
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LIST_HEAD_INIT(network->addresses);
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LIST_HEAD_INIT(network->routes);
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network->addresses_by_section = hashmap_new(uint64_hash_func, uint64_compare_func);
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if (!network->addresses_by_section)
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return log_oom();
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network->routes_by_section = hashmap_new(uint64_hash_func, uint64_compare_func);
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if (!network->routes_by_section)
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return log_oom();
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network->filename = strdup(filename);
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if (!network->filename)
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return log_oom();
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r = config_parse(NULL, filename, file, "Match\0Network\0Address\0Route\0", config_item_perf_lookup,
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(void*) network_gperf_lookup, false, false, network);
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if (r < 0) {
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log_warning("Could not parse config file %s: %s", filename, strerror(-r));
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return r;
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} else
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log_debug("Parsed configuration file %s", filename);
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LIST_PREPEND(networks, manager->networks, network);
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network = NULL;
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return 0;
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}
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int network_load(Manager *manager) {
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Network *network;
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char **files, **f;
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int r;
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assert(manager);
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while ((network = manager->networks))
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network_free(network);
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/* update timestamp */
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paths_check_timestamp(manager->network_dirs, &manager->network_dirs_ts_usec, true);
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r = conf_files_list_strv(&files, ".network", NULL, (const char **)manager->network_dirs);
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if (r < 0) {
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log_error("failed to enumerate network files: %s", strerror(-r));
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return r;
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}
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STRV_FOREACH_BACKWARDS(f, files) {
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r = network_load_one(manager, *f);
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if (r < 0)
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return r;
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}
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strv_free(files);
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return 0;
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}
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bool network_should_reload(Manager *manager) {
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return paths_check_timestamp(manager->network_dirs, &manager->network_dirs_ts_usec, false);
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}
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void network_free(Network *network) {
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Route *route;
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Address *address;
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if (!network)
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return;
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free(network->filename);
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free(network->match_mac);
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free(network->match_path);
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free(network->match_driver);
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free(network->match_type);
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free(network->match_name);
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free(network->description);
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while ((route = network->routes))
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route_free(route);
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while ((address = network->addresses))
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address_free(address);
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hashmap_free(network->addresses_by_section);
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hashmap_free(network->routes_by_section);
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LIST_REMOVE(networks, network->manager->networks, network);
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free(network);
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}
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int network_get(Manager *manager, struct udev_device *device, Network **ret) {
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Network *network;
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assert(manager);
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assert(device);
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assert(ret);
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if (network_should_reload(manager))
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network_load(manager);
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LIST_FOREACH(networks, network, manager->networks) {
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if (net_match_config(network->match_mac, network->match_path,
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network->match_driver, network->match_type,
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network->match_name,
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udev_device_get_sysattr_value(device, "address"),
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udev_device_get_property_value(device, "ID_PATH"),
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udev_device_get_driver(device),
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udev_device_get_devtype(device),
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udev_device_get_sysname(device))) {
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log_debug("Network file %s applies to link %s",
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network->filename,
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udev_device_get_sysname(device));
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*ret = network;
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return 0;
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}
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}
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*ret = NULL;
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return -ENOENT;
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}
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int network_apply(Manager *manager, Network *network, Link *link) {
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int r;
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log_info("Network '%s' being applied to link '%u'",
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network->description, (unsigned) link->ifindex);
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link->network = network;
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r = link_configure(link);
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if (r < 0)
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return r;
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return 0;
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}
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