summaryrefslogtreecommitdiff
path: root/src/network/networkd.c
blob: c03ac69e277de0ce32cd39cc479813d1da722331 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/

/***
  This file is part of systemd.

  Copyright 2013 Tom Gundersen <teg@jklm.no>

  systemd is free software; you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.

  systemd is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License
  along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/

#include "sd-daemon.h"

#include "capability-util.h"
#include "networkd.h"
#include "signal-util.h"
#include "user-util.h"

int main(int argc, char *argv[]) {
        _cleanup_manager_free_ Manager *m = NULL;
        const char *user = "systemd-network";
        uid_t uid;
        gid_t gid;
        int r;

        log_set_target(LOG_TARGET_AUTO);
        log_parse_environment();
        log_open();

        umask(0022);

        if (argc != 1) {
                log_error("This program takes no arguments.");
                r = -EINVAL;
                goto out;
        }

        r = get_user_creds(&user, &uid, &gid, NULL, NULL);
        if (r < 0) {
                log_error_errno(r, "Cannot resolve user name %s: %m", user);
                goto out;
        }

        /* Always create the directories people can create inotify
         * watches in. */
        r = mkdir_safe_label("/run/systemd/netif", 0755, uid, gid);
        if (r < 0)
                log_warning_errno(r, "Could not create runtime directory: %m");

        r = mkdir_safe_label("/run/systemd/netif/links", 0755, uid, gid);
        if (r < 0)
                log_warning_errno(r, "Could not create runtime directory 'links': %m");

        r = mkdir_safe_label("/run/systemd/netif/leases", 0755, uid, gid);
        if (r < 0)
                log_warning_errno(r, "Could not create runtime directory 'leases': %m");

        r = mkdir_safe_label("/run/systemd/netif/lldp", 0755, uid, gid);
        if (r < 0)
                log_warning_errno(r, "Could not create runtime directory 'lldp': %m");

        r = drop_privileges(uid, gid,
                            (1ULL << CAP_NET_ADMIN) |
                            (1ULL << CAP_NET_BIND_SERVICE) |
                            (1ULL << CAP_NET_BROADCAST) |
                            (1ULL << CAP_NET_RAW));
        if (r < 0)
                goto out;

        assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);

        r = manager_new(&m);
        if (r < 0) {
                log_error_errno(r, "Could not create manager: %m");
                goto out;
        }

        r = manager_connect_bus(m);
        if (r < 0) {
                log_error_errno(r, "Could not connect to bus: %m");
                goto out;
        }

        r = manager_load_config(m);
        if (r < 0) {
                log_error_errno(r, "Could not load configuration files: %m");
                goto out;
        }

        r = manager_rtnl_enumerate_links(m);
        if (r < 0) {
                log_error_errno(r, "Could not enumerate links: %m");
                goto out;
        }

        r = manager_rtnl_enumerate_addresses(m);
        if (r < 0) {
                log_error_errno(r, "Could not enumerate addresses: %m");
                goto out;
        }

        log_info("Enumeration completed");

        sd_notify(false,
                  "READY=1\n"
                  "STATUS=Processing requests...");

        r = manager_run(m);
        if (r < 0) {
                log_error_errno(r, "Event loop failed: %m");
                goto out;
        }

out:
        sd_notify(false,
                  "STOPPING=1\n"
                  "STATUS=Shutting down...");

        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}