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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
f579559b | 2 | |
9aa5d8ba | 3 | #include <netinet/in.h> |
ca78ad1d ZJS |
4 | #include <sys/stat.h> |
5 | #include <sys/types.h> | |
6 | ||
a553fd32 | 7 | #include "sd-daemon.h" |
b76d99d9 | 8 | #include "sd-event.h" |
b1d4f8e1 | 9 | |
430f0182 | 10 | #include "capability-util.h" |
2362a8f5 YW |
11 | #include "daemon-util.h" |
12 | #include "main-func.h" | |
51517f9e | 13 | #include "mkdir.h" |
413708d1 | 14 | #include "networkd-conf.h" |
23f53b99 | 15 | #include "networkd-manager.h" |
b1d4f8e1 LP |
16 | #include "signal-util.h" |
17 | #include "user-util.h" | |
f579559b | 18 | |
2362a8f5 | 19 | static int run(int argc, char *argv[]) { |
8e766630 | 20 | _cleanup_(manager_freep) Manager *m = NULL; |
272ac70a | 21 | _cleanup_(notify_on_cleanup) const char *notify_message = NULL; |
f579559b TG |
22 | int r; |
23 | ||
6bf3c61c | 24 | log_setup_service(); |
f579559b TG |
25 | |
26 | umask(0022); | |
27 | ||
2362a8f5 YW |
28 | if (argc != 1) |
29 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "This program takes no arguments."); | |
f579559b | 30 | |
c61f302d | 31 | /* Drop privileges, but only if we have been started as root. If we are not running as root we assume all |
07317d6e | 32 | * privileges are already dropped and we can't create our runtime directory. */ |
c61f302d | 33 | if (geteuid() == 0) { |
07317d6e TM |
34 | const char *user = "systemd-network"; |
35 | uid_t uid; | |
36 | gid_t gid; | |
37 | ||
38 | r = get_user_creds(&user, &uid, &gid, NULL, NULL, 0); | |
39 | if (r < 0) | |
40 | return log_error_errno(r, "Cannot resolve user name %s: %m", user); | |
41 | ||
42 | /* Create runtime directory. This is not necessary when networkd is | |
43 | * started with "RuntimeDirectory=systemd/netif", or after | |
44 | * systemd-tmpfiles-setup.service. */ | |
45 | r = mkdir_safe_label("/run/systemd/netif", 0755, uid, gid, MKDIR_WARN_MODE); | |
46 | if (r < 0) | |
47 | log_warning_errno(r, "Could not create runtime directory: %m"); | |
48 | ||
c61f302d YW |
49 | r = drop_privileges(uid, gid, |
50 | (1ULL << CAP_NET_ADMIN) | | |
51 | (1ULL << CAP_NET_BIND_SERVICE) | | |
52 | (1ULL << CAP_NET_BROADCAST) | | |
53 | (1ULL << CAP_NET_RAW)); | |
54 | if (r < 0) | |
2362a8f5 | 55 | return log_error_errno(r, "Failed to drop privileges: %m"); |
c61f302d | 56 | } |
d3cf48f4 | 57 | |
0a02e383 YW |
58 | /* Always create the directories people can create inotify watches in. |
59 | * It is necessary to create the following subdirectories after drop_privileges() | |
60 | * to support old kernels not supporting AmbientCapabilities=. */ | |
07317d6e | 61 | r = mkdir_safe_label("/run/systemd/netif/links", 0755, UID_INVALID, GID_INVALID, MKDIR_WARN_MODE); |
0a02e383 YW |
62 | if (r < 0) |
63 | log_warning_errno(r, "Could not create runtime directory 'links': %m"); | |
64 | ||
07317d6e | 65 | r = mkdir_safe_label("/run/systemd/netif/leases", 0755, UID_INVALID, GID_INVALID, MKDIR_WARN_MODE); |
0a02e383 YW |
66 | if (r < 0) |
67 | log_warning_errno(r, "Could not create runtime directory 'leases': %m"); | |
68 | ||
07317d6e | 69 | r = mkdir_safe_label("/run/systemd/netif/lldp", 0755, UID_INVALID, GID_INVALID, MKDIR_WARN_MODE); |
0a02e383 YW |
70 | if (r < 0) |
71 | log_warning_errno(r, "Could not create runtime directory 'lldp': %m"); | |
72 | ||
72c0a2c2 | 73 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0); |
186fe1db | 74 | |
3534a043 | 75 | r = manager_new(&m); |
2362a8f5 YW |
76 | if (r < 0) |
77 | return log_error_errno(r, "Could not create manager: %m"); | |
8f203c16 TG |
78 | |
79 | r = manager_connect_bus(m); | |
2362a8f5 YW |
80 | if (r < 0) |
81 | return log_error_errno(r, "Could not connect to bus: %m"); | |
f579559b | 82 | |
413708d1 VK |
83 | r = manager_parse_config_file(m); |
84 | if (r < 0) | |
85 | log_warning_errno(r, "Failed to parse configuration file: %m"); | |
86 | ||
f0c4cd7a | 87 | r = manager_load_config(m); |
2362a8f5 YW |
88 | if (r < 0) |
89 | return log_error_errno(r, "Could not load configuration files: %m"); | |
3bef724f | 90 | |
505f8da7 | 91 | r = manager_rtnl_enumerate_links(m); |
2362a8f5 YW |
92 | if (r < 0) |
93 | return log_error_errno(r, "Could not enumerate links: %m"); | |
1346b1f0 | 94 | |
45af44d4 | 95 | r = manager_rtnl_enumerate_addresses(m); |
2362a8f5 YW |
96 | if (r < 0) |
97 | return log_error_errno(r, "Could not enumerate addresses: %m"); | |
45af44d4 | 98 | |
d1bdafd2 WKI |
99 | r = manager_rtnl_enumerate_neighbors(m); |
100 | if (r < 0) | |
101 | return log_error_errno(r, "Could not enumerate neighbors: %m"); | |
102 | ||
1c8e710c | 103 | r = manager_rtnl_enumerate_routes(m); |
2362a8f5 YW |
104 | if (r < 0) |
105 | return log_error_errno(r, "Could not enumerate routes: %m"); | |
1c8e710c | 106 | |
bce67bbe | 107 | r = manager_rtnl_enumerate_rules(m); |
2362a8f5 YW |
108 | if (r < 0) |
109 | return log_error_errno(r, "Could not enumerate rules: %m"); | |
bce67bbe | 110 | |
c16c7808 SS |
111 | r = manager_rtnl_enumerate_nexthop(m); |
112 | if (r < 0) | |
113 | return log_error_errno(r, "Could not enumerate nexthop: %m"); | |
114 | ||
b76d99d9 | 115 | r = manager_start(m); |
2362a8f5 YW |
116 | if (r < 0) |
117 | return log_error_errno(r, "Could not start manager: %m"); | |
b76d99d9 | 118 | |
73432d67 TG |
119 | log_info("Enumeration completed"); |
120 | ||
2362a8f5 | 121 | notify_message = notify_start(NOTIFY_READY, NOTIFY_STOPPING); |
f882c247 | 122 | |
3534a043 | 123 | r = sd_event_loop(m->event); |
2362a8f5 YW |
124 | if (r < 0) |
125 | return log_error_errno(r, "Event loop failed: %m"); | |
f579559b | 126 | |
2362a8f5 | 127 | return 0; |
f579559b | 128 | } |
2362a8f5 YW |
129 | |
130 | DEFINE_MAIN_FUNCTION(run); |