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f579559b TG |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
a553fd32 | 20 | #include "sd-daemon.h" |
b76d99d9 | 21 | #include "sd-event.h" |
b1d4f8e1 | 22 | |
430f0182 | 23 | #include "capability-util.h" |
413708d1 | 24 | #include "networkd-conf.h" |
23f53b99 | 25 | #include "networkd-manager.h" |
b1d4f8e1 LP |
26 | #include "signal-util.h" |
27 | #include "user-util.h" | |
f579559b TG |
28 | |
29 | int main(int argc, char *argv[]) { | |
b76d99d9 | 30 | sd_event *event = NULL; |
e877666c | 31 | _cleanup_manager_free_ Manager *m = NULL; |
d3cf48f4 LP |
32 | const char *user = "systemd-network"; |
33 | uid_t uid; | |
34 | gid_t gid; | |
f579559b TG |
35 | int r; |
36 | ||
37 | log_set_target(LOG_TARGET_AUTO); | |
38 | log_parse_environment(); | |
39 | log_open(); | |
40 | ||
41 | umask(0022); | |
42 | ||
43 | if (argc != 1) { | |
44 | log_error("This program takes no arguments."); | |
4b6141c4 TG |
45 | r = -EINVAL; |
46 | goto out; | |
f579559b TG |
47 | } |
48 | ||
d3cf48f4 LP |
49 | r = get_user_creds(&user, &uid, &gid, NULL, NULL); |
50 | if (r < 0) { | |
da927ba9 | 51 | log_error_errno(r, "Cannot resolve user name %s: %m", user); |
d3cf48f4 LP |
52 | goto out; |
53 | } | |
54 | ||
fe8db0c5 TG |
55 | /* Always create the directories people can create inotify |
56 | * watches in. */ | |
85b5673b | 57 | r = mkdir_safe_label("/run/systemd/netif", 0755, uid, gid); |
0ea51a11 | 58 | if (r < 0) |
8bde1d0c | 59 | log_warning_errno(r, "Could not create runtime directory: %m"); |
0ea51a11 | 60 | |
85b5673b | 61 | r = mkdir_safe_label("/run/systemd/netif/links", 0755, uid, gid); |
0ea51a11 | 62 | if (r < 0) |
8bde1d0c | 63 | log_warning_errno(r, "Could not create runtime directory 'links': %m"); |
0ea51a11 | 64 | |
85b5673b | 65 | r = mkdir_safe_label("/run/systemd/netif/leases", 0755, uid, gid); |
0ea51a11 | 66 | if (r < 0) |
8bde1d0c | 67 | log_warning_errno(r, "Could not create runtime directory 'leases': %m"); |
fe8db0c5 | 68 | |
49699bac SS |
69 | r = mkdir_safe_label("/run/systemd/netif/lldp", 0755, uid, gid); |
70 | if (r < 0) | |
8bde1d0c | 71 | log_warning_errno(r, "Could not create runtime directory 'lldp': %m"); |
49699bac | 72 | |
c61f302d YW |
73 | /* Drop privileges, but only if we have been started as root. If we are not running as root we assume all |
74 | * privileges are already dropped. */ | |
75 | if (geteuid() == 0) { | |
76 | r = drop_privileges(uid, gid, | |
77 | (1ULL << CAP_NET_ADMIN) | | |
78 | (1ULL << CAP_NET_BIND_SERVICE) | | |
79 | (1ULL << CAP_NET_BROADCAST) | | |
80 | (1ULL << CAP_NET_RAW)); | |
81 | if (r < 0) | |
82 | goto out; | |
83 | } | |
d3cf48f4 | 84 | |
72c0a2c2 | 85 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0); |
186fe1db | 86 | |
b76d99d9 TG |
87 | r = sd_event_default(&event); |
88 | if (r < 0) | |
89 | goto out; | |
90 | ||
91 | sd_event_set_watchdog(event, true); | |
92 | sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL); | |
93 | sd_event_add_signal(event, NULL, SIGINT, NULL, NULL); | |
94 | ||
95 | r = manager_new(&m, event); | |
1f6d9bc9 | 96 | if (r < 0) { |
da927ba9 | 97 | log_error_errno(r, "Could not create manager: %m"); |
8f203c16 TG |
98 | goto out; |
99 | } | |
100 | ||
101 | r = manager_connect_bus(m); | |
102 | if (r < 0) { | |
103 | log_error_errno(r, "Could not connect to bus: %m"); | |
4b6141c4 | 104 | goto out; |
1f6d9bc9 | 105 | } |
f579559b | 106 | |
413708d1 VK |
107 | r = manager_parse_config_file(m); |
108 | if (r < 0) | |
109 | log_warning_errno(r, "Failed to parse configuration file: %m"); | |
110 | ||
f0c4cd7a | 111 | r = manager_load_config(m); |
1f6d9bc9 | 112 | if (r < 0) { |
da927ba9 | 113 | log_error_errno(r, "Could not load configuration files: %m"); |
4b6141c4 | 114 | goto out; |
1f6d9bc9 | 115 | } |
3bef724f | 116 | |
505f8da7 | 117 | r = manager_rtnl_enumerate_links(m); |
1346b1f0 | 118 | if (r < 0) { |
da927ba9 | 119 | log_error_errno(r, "Could not enumerate links: %m"); |
1346b1f0 TG |
120 | goto out; |
121 | } | |
122 | ||
45af44d4 TG |
123 | r = manager_rtnl_enumerate_addresses(m); |
124 | if (r < 0) { | |
2ee5363b | 125 | log_error_errno(r, "Could not enumerate addresses: %m"); |
45af44d4 TG |
126 | goto out; |
127 | } | |
128 | ||
1c8e710c TG |
129 | r = manager_rtnl_enumerate_routes(m); |
130 | if (r < 0) { | |
131 | log_error_errno(r, "Could not enumerate routes: %m"); | |
132 | goto out; | |
133 | } | |
134 | ||
bce67bbe SS |
135 | r = manager_rtnl_enumerate_rules(m); |
136 | if (r < 0) { | |
137 | log_error_errno(r, "Could not enumerate rules: %m"); | |
138 | goto out; | |
139 | } | |
140 | ||
b76d99d9 TG |
141 | r = manager_start(m); |
142 | if (r < 0) { | |
143 | log_error_errno(r, "Could not start manager: %m"); | |
144 | goto out; | |
145 | } | |
146 | ||
73432d67 TG |
147 | log_info("Enumeration completed"); |
148 | ||
4b6141c4 TG |
149 | sd_notify(false, |
150 | "READY=1\n" | |
151 | "STATUS=Processing requests..."); | |
f882c247 | 152 | |
b76d99d9 | 153 | r = sd_event_loop(event); |
1f6d9bc9 | 154 | if (r < 0) { |
da927ba9 | 155 | log_error_errno(r, "Event loop failed: %m"); |
4b6141c4 | 156 | goto out; |
1f6d9bc9 | 157 | } |
4b6141c4 TG |
158 | out: |
159 | sd_notify(false, | |
af4ec430 | 160 | "STOPPING=1\n" |
4b6141c4 | 161 | "STATUS=Shutting down..."); |
f579559b | 162 | |
b76d99d9 TG |
163 | sd_event_unref(event); |
164 | ||
4b6141c4 | 165 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
f579559b | 166 | } |