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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" |
2362a8f5 YW |
7 | #include "daemon-util.h" |
8 | #include "main-func.h" | |
51517f9e | 9 | #include "mkdir.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 | 14 | |
2362a8f5 YW |
15 | static int run(int argc, char *argv[]) { |
16 | _cleanup_(notify_on_cleanup) const char *notify_message = 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 | ||
6bf3c61c | 23 | log_setup_service(); |
f579559b TG |
24 | |
25 | umask(0022); | |
26 | ||
2362a8f5 YW |
27 | if (argc != 1) |
28 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "This program takes no arguments."); | |
f579559b | 29 | |
fafff8f1 | 30 | r = get_user_creds(&user, &uid, &gid, NULL, NULL, 0); |
2362a8f5 YW |
31 | if (r < 0) |
32 | return log_error_errno(r, "Cannot resolve user name %s: %m", user); | |
d3cf48f4 | 33 | |
0a02e383 YW |
34 | /* Create runtime directory. This is not necessary when networkd is |
35 | * started with "RuntimeDirectory=systemd/netif", or after | |
36 | * systemd-tmpfiles-setup.service. */ | |
37c1d5e9 | 37 | r = mkdir_safe_label("/run/systemd/netif", 0755, uid, gid, MKDIR_WARN_MODE); |
0ea51a11 | 38 | if (r < 0) |
8bde1d0c | 39 | log_warning_errno(r, "Could not create runtime directory: %m"); |
0ea51a11 | 40 | |
c61f302d YW |
41 | /* Drop privileges, but only if we have been started as root. If we are not running as root we assume all |
42 | * privileges are already dropped. */ | |
43 | if (geteuid() == 0) { | |
44 | r = drop_privileges(uid, gid, | |
45 | (1ULL << CAP_NET_ADMIN) | | |
46 | (1ULL << CAP_NET_BIND_SERVICE) | | |
47 | (1ULL << CAP_NET_BROADCAST) | | |
48 | (1ULL << CAP_NET_RAW)); | |
49 | if (r < 0) | |
2362a8f5 | 50 | return log_error_errno(r, "Failed to drop privileges: %m"); |
c61f302d | 51 | } |
d3cf48f4 | 52 | |
0a02e383 YW |
53 | /* Always create the directories people can create inotify watches in. |
54 | * It is necessary to create the following subdirectories after drop_privileges() | |
55 | * to support old kernels not supporting AmbientCapabilities=. */ | |
37c1d5e9 | 56 | r = mkdir_safe_label("/run/systemd/netif/links", 0755, uid, gid, MKDIR_WARN_MODE); |
0a02e383 YW |
57 | if (r < 0) |
58 | log_warning_errno(r, "Could not create runtime directory 'links': %m"); | |
59 | ||
37c1d5e9 | 60 | r = mkdir_safe_label("/run/systemd/netif/leases", 0755, uid, gid, MKDIR_WARN_MODE); |
0a02e383 YW |
61 | if (r < 0) |
62 | log_warning_errno(r, "Could not create runtime directory 'leases': %m"); | |
63 | ||
37c1d5e9 | 64 | r = mkdir_safe_label("/run/systemd/netif/lldp", 0755, uid, gid, MKDIR_WARN_MODE); |
0a02e383 YW |
65 | if (r < 0) |
66 | log_warning_errno(r, "Could not create runtime directory 'lldp': %m"); | |
67 | ||
72c0a2c2 | 68 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0); |
186fe1db | 69 | |
3534a043 | 70 | r = manager_new(&m); |
2362a8f5 YW |
71 | if (r < 0) |
72 | return log_error_errno(r, "Could not create manager: %m"); | |
8f203c16 TG |
73 | |
74 | r = manager_connect_bus(m); | |
2362a8f5 YW |
75 | if (r < 0) |
76 | return log_error_errno(r, "Could not connect to bus: %m"); | |
f579559b | 77 | |
413708d1 VK |
78 | r = manager_parse_config_file(m); |
79 | if (r < 0) | |
80 | log_warning_errno(r, "Failed to parse configuration file: %m"); | |
81 | ||
f0c4cd7a | 82 | r = manager_load_config(m); |
2362a8f5 YW |
83 | if (r < 0) |
84 | return log_error_errno(r, "Could not load configuration files: %m"); | |
3bef724f | 85 | |
505f8da7 | 86 | r = manager_rtnl_enumerate_links(m); |
2362a8f5 YW |
87 | if (r < 0) |
88 | return log_error_errno(r, "Could not enumerate links: %m"); | |
1346b1f0 | 89 | |
45af44d4 | 90 | r = manager_rtnl_enumerate_addresses(m); |
2362a8f5 YW |
91 | if (r < 0) |
92 | return log_error_errno(r, "Could not enumerate addresses: %m"); | |
45af44d4 | 93 | |
1c8e710c | 94 | r = manager_rtnl_enumerate_routes(m); |
2362a8f5 YW |
95 | if (r < 0) |
96 | return log_error_errno(r, "Could not enumerate routes: %m"); | |
1c8e710c | 97 | |
bce67bbe | 98 | r = manager_rtnl_enumerate_rules(m); |
2362a8f5 YW |
99 | if (r < 0) |
100 | return log_error_errno(r, "Could not enumerate rules: %m"); | |
bce67bbe | 101 | |
b76d99d9 | 102 | r = manager_start(m); |
2362a8f5 YW |
103 | if (r < 0) |
104 | return log_error_errno(r, "Could not start manager: %m"); | |
b76d99d9 | 105 | |
73432d67 TG |
106 | log_info("Enumeration completed"); |
107 | ||
2362a8f5 | 108 | notify_message = notify_start(NOTIFY_READY, NOTIFY_STOPPING); |
f882c247 | 109 | |
3534a043 | 110 | r = sd_event_loop(m->event); |
2362a8f5 YW |
111 | if (r < 0) |
112 | return log_error_errno(r, "Event loop failed: %m"); | |
f579559b | 113 | |
2362a8f5 | 114 | return 0; |
f579559b | 115 | } |
2362a8f5 YW |
116 | |
117 | DEFINE_MAIN_FUNCTION(run); |