src/network/networkd.c

	networkd.c revision 49699bac94d24b444274f91f85c82e6fad04d029
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering/***
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering  This file is part of systemd.
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering  Copyright 2013 Tom Gundersen <teg@jklm.no>
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering  systemd is free software; you can redistribute it and/or modify it
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering  under the terms of the GNU Lesser General Public License as published by
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering  the Free Software Foundation; either version 2.1 of the License, or
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering  (at your option) any later version.
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering  systemd is distributed in the hope that it will be useful, but
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering  WITHOUT ANY WARRANTY; without even the implied warranty of
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering  Lesser General Public License for more details.
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering  You should have received a copy of the GNU Lesser General Public License
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering  along with systemd; If not, see <http://www.gnu.org/licenses/>.
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering***/
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering#include "capability.h"
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering#include "sd-event.h"
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering#include "sd-daemon.h"
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering#include "networkd.h"
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poetteringint main(int argc, char *argv[]) {
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        _cleanup_manager_free_ Manager *m = NULL;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        const char *user = "systemd-network";
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        uid_t uid;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        gid_t gid;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        int r;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        log_set_target(LOG_TARGET_AUTO);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        log_parse_environment();
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        log_open();
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        umask(0022);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        if (argc != 1) {
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                log_error("This program takes no arguments.");
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                r = -EINVAL;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                goto out;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        }
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        r = get_user_creds(&user, &uid, &gid, NULL, NULL);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        if (r < 0) {
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                log_error_errno(r, "Cannot resolve user name %s: %m", user);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                goto out;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        }
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        /* Always create the directories people can create inotify
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering         * watches in. */
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        r = mkdir_safe_label("/run/systemd/netif", 0755, uid, gid);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        if (r < 0)
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                log_error_errno(r, "Could not create runtime directory: %m");
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        r = mkdir_safe_label("/run/systemd/netif/links", 0755, uid, gid);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        if (r < 0)
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                log_error_errno(r, "Could not create runtime directory 'links': %m");
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        r = mkdir_safe_label("/run/systemd/netif/leases", 0755, uid, gid);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        if (r < 0)
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                log_error_errno(r, "Could not create runtime directory 'leases': %m");
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        r = mkdir_safe_label("/run/systemd/netif/lldp", 0755, uid, gid);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        if (r < 0)
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                log_error("Could not create runtime directory 'lldp': %s",
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                          strerror(-r));
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        r = drop_privileges(uid, gid,
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                            (1ULL << CAP_NET_ADMIN) |
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                            (1ULL << CAP_NET_BIND_SERVICE) |
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                            (1ULL << CAP_NET_BROADCAST) |
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                            (1ULL << CAP_NET_RAW));
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        if (r < 0)
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                goto out;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        r = manager_new(&m);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        if (r < 0) {
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                log_error_errno(r, "Could not create manager: %m");
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                goto out;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        }
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        r = manager_udev_listen(m);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        if (r < 0) {
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                log_error_errno(r, "Could not connect to udev: %m");
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                goto out;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        }
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        r = manager_rtnl_listen(m);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        if (r < 0) {
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                log_error_errno(r, "Could not connect to rtnl: %m");
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                goto out;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        }
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        r = manager_bus_listen(m);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        if (r < 0) {
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                log_error_errno(r, "Could not connect to system bus: %m");
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                goto out;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        }
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        r = manager_load_config(m);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        if (r < 0) {
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                log_error_errno(r, "Could not load configuration files: %m");
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                goto out;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        }
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        r = manager_rtnl_enumerate_links(m);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        if (r < 0) {
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                log_error_errno(r, "Could not enumerate links: %m");
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                goto out;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        }
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        r = manager_rtnl_enumerate_addresses(m);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        if (r < 0) {
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                log_error_errno(r, "Could not enumerate links: %m");
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                goto out;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        }
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        sd_notify(false,
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                  "READY=1\n"
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                  "STATUS=Processing requests...");
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        r = sd_event_loop(m->event);
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        if (r < 0) {
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                log_error_errno(r, "Event loop failed: %m");
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                goto out;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        }
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poetteringout:
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        sd_notify(false,
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                  "STOPPING=1\n"
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering                  "STATUS=Shutting down...");
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering}
587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering