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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
f579559b | 2 | /*** |
96b2fb93 | 3 | Copyright © 2013 Tom Gundersen <teg@jklm.no> |
f579559b TG |
4 | ***/ |
5 | ||
a553fd32 | 6 | #include "sd-daemon.h" |
b76d99d9 | 7 | #include "sd-event.h" |
b1d4f8e1 | 8 | |
430f0182 | 9 | #include "capability-util.h" |
413708d1 | 10 | #include "networkd-conf.h" |
23f53b99 | 11 | #include "networkd-manager.h" |
b1d4f8e1 LP |
12 | #include "signal-util.h" |
13 | #include "user-util.h" | |
f579559b TG |
14 | |
15 | int main(int argc, char *argv[]) { | |
b76d99d9 | 16 | sd_event *event = NULL; |
8e766630 | 17 | _cleanup_(manager_freep) Manager *m = NULL; |
d3cf48f4 LP |
18 | const char *user = "systemd-network"; |
19 | uid_t uid; | |
20 | gid_t gid; | |
f579559b TG |
21 | int r; |
22 | ||
23 | log_set_target(LOG_TARGET_AUTO); | |
24 | log_parse_environment(); | |
25 | log_open(); | |
26 | ||
27 | umask(0022); | |
28 | ||
29 | if (argc != 1) { | |
30 | log_error("This program takes no arguments."); | |
4b6141c4 TG |
31 | r = -EINVAL; |
32 | goto out; | |
f579559b TG |
33 | } |
34 | ||
d3cf48f4 LP |
35 | r = get_user_creds(&user, &uid, &gid, NULL, NULL); |
36 | if (r < 0) { | |
da927ba9 | 37 | log_error_errno(r, "Cannot resolve user name %s: %m", user); |
d3cf48f4 LP |
38 | goto out; |
39 | } | |
40 | ||
0a02e383 YW |
41 | /* Create runtime directory. This is not necessary when networkd is |
42 | * started with "RuntimeDirectory=systemd/netif", or after | |
43 | * systemd-tmpfiles-setup.service. */ | |
37c1d5e9 | 44 | r = mkdir_safe_label("/run/systemd/netif", 0755, uid, gid, MKDIR_WARN_MODE); |
0ea51a11 | 45 | if (r < 0) |
8bde1d0c | 46 | log_warning_errno(r, "Could not create runtime directory: %m"); |
0ea51a11 | 47 | |
c61f302d YW |
48 | /* Drop privileges, but only if we have been started as root. If we are not running as root we assume all |
49 | * privileges are already dropped. */ | |
50 | if (geteuid() == 0) { | |
51 | r = drop_privileges(uid, gid, | |
52 | (1ULL << CAP_NET_ADMIN) | | |
53 | (1ULL << CAP_NET_BIND_SERVICE) | | |
54 | (1ULL << CAP_NET_BROADCAST) | | |
55 | (1ULL << CAP_NET_RAW)); | |
56 | if (r < 0) | |
57 | goto out; | |
58 | } | |
d3cf48f4 | 59 | |
0a02e383 YW |
60 | /* Always create the directories people can create inotify watches in. |
61 | * It is necessary to create the following subdirectories after drop_privileges() | |
62 | * to support old kernels not supporting AmbientCapabilities=. */ | |
37c1d5e9 | 63 | r = mkdir_safe_label("/run/systemd/netif/links", 0755, uid, gid, MKDIR_WARN_MODE); |
0a02e383 YW |
64 | if (r < 0) |
65 | log_warning_errno(r, "Could not create runtime directory 'links': %m"); | |
66 | ||
37c1d5e9 | 67 | r = mkdir_safe_label("/run/systemd/netif/leases", 0755, uid, gid, MKDIR_WARN_MODE); |
0a02e383 YW |
68 | if (r < 0) |
69 | log_warning_errno(r, "Could not create runtime directory 'leases': %m"); | |
70 | ||
37c1d5e9 | 71 | r = mkdir_safe_label("/run/systemd/netif/lldp", 0755, uid, gid, MKDIR_WARN_MODE); |
0a02e383 YW |
72 | if (r < 0) |
73 | log_warning_errno(r, "Could not create runtime directory 'lldp': %m"); | |
74 | ||
72c0a2c2 | 75 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0); |
186fe1db | 76 | |
b76d99d9 TG |
77 | r = sd_event_default(&event); |
78 | if (r < 0) | |
79 | goto out; | |
80 | ||
81 | sd_event_set_watchdog(event, true); | |
82 | sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL); | |
83 | sd_event_add_signal(event, NULL, SIGINT, NULL, NULL); | |
84 | ||
85 | r = manager_new(&m, event); | |
1f6d9bc9 | 86 | if (r < 0) { |
da927ba9 | 87 | log_error_errno(r, "Could not create manager: %m"); |
8f203c16 TG |
88 | goto out; |
89 | } | |
90 | ||
91 | r = manager_connect_bus(m); | |
92 | if (r < 0) { | |
93 | log_error_errno(r, "Could not connect to bus: %m"); | |
4b6141c4 | 94 | goto out; |
1f6d9bc9 | 95 | } |
f579559b | 96 | |
413708d1 VK |
97 | r = manager_parse_config_file(m); |
98 | if (r < 0) | |
99 | log_warning_errno(r, "Failed to parse configuration file: %m"); | |
100 | ||
f0c4cd7a | 101 | r = manager_load_config(m); |
1f6d9bc9 | 102 | if (r < 0) { |
da927ba9 | 103 | log_error_errno(r, "Could not load configuration files: %m"); |
4b6141c4 | 104 | goto out; |
1f6d9bc9 | 105 | } |
3bef724f | 106 | |
505f8da7 | 107 | r = manager_rtnl_enumerate_links(m); |
1346b1f0 | 108 | if (r < 0) { |
da927ba9 | 109 | log_error_errno(r, "Could not enumerate links: %m"); |
1346b1f0 TG |
110 | goto out; |
111 | } | |
112 | ||
45af44d4 TG |
113 | r = manager_rtnl_enumerate_addresses(m); |
114 | if (r < 0) { | |
2ee5363b | 115 | log_error_errno(r, "Could not enumerate addresses: %m"); |
45af44d4 TG |
116 | goto out; |
117 | } | |
118 | ||
1c8e710c TG |
119 | r = manager_rtnl_enumerate_routes(m); |
120 | if (r < 0) { | |
121 | log_error_errno(r, "Could not enumerate routes: %m"); | |
122 | goto out; | |
123 | } | |
124 | ||
bce67bbe SS |
125 | r = manager_rtnl_enumerate_rules(m); |
126 | if (r < 0) { | |
127 | log_error_errno(r, "Could not enumerate rules: %m"); | |
128 | goto out; | |
129 | } | |
130 | ||
b76d99d9 TG |
131 | r = manager_start(m); |
132 | if (r < 0) { | |
133 | log_error_errno(r, "Could not start manager: %m"); | |
134 | goto out; | |
135 | } | |
136 | ||
73432d67 TG |
137 | log_info("Enumeration completed"); |
138 | ||
4b6141c4 TG |
139 | sd_notify(false, |
140 | "READY=1\n" | |
141 | "STATUS=Processing requests..."); | |
f882c247 | 142 | |
b76d99d9 | 143 | r = sd_event_loop(event); |
1f6d9bc9 | 144 | if (r < 0) { |
da927ba9 | 145 | log_error_errno(r, "Event loop failed: %m"); |
4b6141c4 | 146 | goto out; |
1f6d9bc9 | 147 | } |
4b6141c4 TG |
148 | out: |
149 | sd_notify(false, | |
af4ec430 | 150 | "STOPPING=1\n" |
4b6141c4 | 151 | "STATUS=Shutting down..."); |
f579559b | 152 | |
b76d99d9 TG |
153 | sd_event_unref(event); |
154 | ||
4b6141c4 | 155 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
f579559b | 156 | } |