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