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git.ipfire.org Git - thirdparty/systemd.git/blob - src/network/networkd.c
1 /* SPDX-License-Identifier: LGPL-2.1+ */
6 #include "capability-util.h"
7 #include "networkd-conf.h"
8 #include "networkd-manager.h"
9 #include "signal-util.h"
10 #include "user-util.h"
12 int main(int argc
, char *argv
[]) {
13 _cleanup_(manager_freep
) Manager
*m
= NULL
;
14 const char *user
= "systemd-network";
19 log_set_target(LOG_TARGET_AUTO
);
20 log_parse_environment();
26 log_error("This program takes no arguments.");
31 r
= get_user_creds(&user
, &uid
, &gid
, NULL
, NULL
);
33 log_error_errno(r
, "Cannot resolve user name %s: %m", user
);
37 /* Create runtime directory. This is not necessary when networkd is
38 * started with "RuntimeDirectory=systemd/netif", or after
39 * systemd-tmpfiles-setup.service. */
40 r
= mkdir_safe_label("/run/systemd/netif", 0755, uid
, gid
, MKDIR_WARN_MODE
);
42 log_warning_errno(r
, "Could not create runtime directory: %m");
44 /* Drop privileges, but only if we have been started as root. If we are not running as root we assume all
45 * privileges are already dropped. */
47 r
= drop_privileges(uid
, gid
,
48 (1ULL << CAP_NET_ADMIN
) |
49 (1ULL << CAP_NET_BIND_SERVICE
) |
50 (1ULL << CAP_NET_BROADCAST
) |
51 (1ULL << CAP_NET_RAW
));
56 /* Always create the directories people can create inotify watches in.
57 * It is necessary to create the following subdirectories after drop_privileges()
58 * to support old kernels not supporting AmbientCapabilities=. */
59 r
= mkdir_safe_label("/run/systemd/netif/links", 0755, uid
, gid
, MKDIR_WARN_MODE
);
61 log_warning_errno(r
, "Could not create runtime directory 'links': %m");
63 r
= mkdir_safe_label("/run/systemd/netif/leases", 0755, uid
, gid
, MKDIR_WARN_MODE
);
65 log_warning_errno(r
, "Could not create runtime directory 'leases': %m");
67 r
= mkdir_safe_label("/run/systemd/netif/lldp", 0755, uid
, gid
, MKDIR_WARN_MODE
);
69 log_warning_errno(r
, "Could not create runtime directory 'lldp': %m");
71 assert_se(sigprocmask_many(SIG_BLOCK
, NULL
, SIGTERM
, SIGINT
, -1) >= 0);
75 log_error_errno(r
, "Could not create manager: %m");
79 r
= manager_connect_bus(m
);
81 log_error_errno(r
, "Could not connect to bus: %m");
85 r
= manager_parse_config_file(m
);
87 log_warning_errno(r
, "Failed to parse configuration file: %m");
89 r
= manager_load_config(m
);
91 log_error_errno(r
, "Could not load configuration files: %m");
95 r
= manager_rtnl_enumerate_links(m
);
97 log_error_errno(r
, "Could not enumerate links: %m");
101 r
= manager_rtnl_enumerate_addresses(m
);
103 log_error_errno(r
, "Could not enumerate addresses: %m");
107 r
= manager_rtnl_enumerate_routes(m
);
109 log_error_errno(r
, "Could not enumerate routes: %m");
113 r
= manager_rtnl_enumerate_rules(m
);
115 log_error_errno(r
, "Could not enumerate rules: %m");
119 r
= manager_start(m
);
121 log_error_errno(r
, "Could not start manager: %m");
125 log_info("Enumeration completed");
129 "STATUS=Processing requests...");
131 r
= sd_event_loop(m
->event
);
133 log_error_errno(r
, "Event loop failed: %m");
139 "STATUS=Shutting down...");
141 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;