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Commit | Line | Data |
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091a364c TG |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2014 Tom Gundersen <teg@jklm.no> | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
091a364c | 20 | #include "sd-daemon.h" |
b1d4f8e1 LP |
21 | #include "sd-event.h" |
22 | ||
430f0182 | 23 | #include "capability-util.h" |
b1d4f8e1 LP |
24 | #include "mkdir.h" |
25 | #include "resolved-conf.h" | |
26 | #include "resolved-manager.h" | |
f8dc7e34 | 27 | #include "resolved-resolv-conf.h" |
d7b8eec7 | 28 | #include "selinux-util.h" |
24882e06 | 29 | #include "signal-util.h" |
b1d4f8e1 | 30 | #include "user-util.h" |
4e945a6f | 31 | |
091a364c | 32 | int main(int argc, char *argv[]) { |
74b2466e | 33 | _cleanup_(manager_freep) Manager *m = NULL; |
682265d5 TG |
34 | const char *user = "systemd-resolve"; |
35 | uid_t uid; | |
36 | gid_t gid; | |
091a364c TG |
37 | int r; |
38 | ||
39 | log_set_target(LOG_TARGET_AUTO); | |
40 | log_parse_environment(); | |
41 | log_open(); | |
42 | ||
091a364c TG |
43 | if (argc != 1) { |
44 | log_error("This program takes no arguments."); | |
45 | r = -EINVAL; | |
74b2466e | 46 | goto finish; |
091a364c TG |
47 | } |
48 | ||
a5a807e6 ZJS |
49 | umask(0022); |
50 | ||
c3dacc8b | 51 | r = mac_selinux_init(); |
a5a807e6 | 52 | if (r < 0) { |
da927ba9 | 53 | log_error_errno(r, "SELinux setup failed: %m"); |
a5a807e6 ZJS |
54 | goto finish; |
55 | } | |
56 | ||
682265d5 TG |
57 | r = get_user_creds(&user, &uid, &gid, NULL, NULL); |
58 | if (r < 0) { | |
da927ba9 | 59 | log_error_errno(r, "Cannot resolve user name %s: %m", user); |
74b2466e | 60 | goto finish; |
682265d5 TG |
61 | } |
62 | ||
091a364c | 63 | /* Always create the directory where resolv.conf will live */ |
682265d5 TG |
64 | r = mkdir_safe_label("/run/systemd/resolve", 0755, uid, gid); |
65 | if (r < 0) { | |
da927ba9 | 66 | log_error_errno(r, "Could not create runtime directory: %m"); |
74b2466e | 67 | goto finish; |
682265d5 TG |
68 | } |
69 | ||
70 | r = drop_privileges(uid, gid, 0); | |
71 | if (r < 0) | |
74b2466e | 72 | goto finish; |
091a364c | 73 | |
4d506d6b | 74 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, SIGUSR1, -1) >= 0); |
b9e7a9d8 | 75 | |
091a364c TG |
76 | r = manager_new(&m); |
77 | if (r < 0) { | |
da927ba9 | 78 | log_error_errno(r, "Could not create manager: %m"); |
74b2466e | 79 | goto finish; |
091a364c TG |
80 | } |
81 | ||
edc501d4 LP |
82 | r = manager_start(m); |
83 | if (r < 0) { | |
da927ba9 | 84 | log_error_errno(r, "Failed to start manager: %m"); |
edc501d4 LP |
85 | goto finish; |
86 | } | |
87 | ||
7207052d LP |
88 | /* Write finish default resolv.conf to avoid a dangling symlink */ |
89 | (void) manager_write_resolv_conf(m); | |
091a364c TG |
90 | |
91 | sd_notify(false, | |
92 | "READY=1\n" | |
93 | "STATUS=Processing requests..."); | |
94 | ||
95 | r = sd_event_loop(m->event); | |
96 | if (r < 0) { | |
da927ba9 | 97 | log_error_errno(r, "Event loop failed: %m"); |
74b2466e | 98 | goto finish; |
091a364c TG |
99 | } |
100 | ||
96e6e394 LP |
101 | sd_event_get_exit_code(m->event, &r); |
102 | ||
74b2466e | 103 | finish: |
af4ec430 | 104 | sd_notify(false, |
b37d45c9 | 105 | "STOPPING=1\n" |
af4ec430 | 106 | "STATUS=Shutting down..."); |
091a364c TG |
107 | |
108 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
109 | } |