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d093b62c LP |
1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
2 | ||
3 | #include <sys/stat.h> | |
4 | #include <sys/types.h> | |
5 | ||
6 | #include "daemon-util.h" | |
7 | #include "userdbd-manager.h" | |
8 | #include "log.h" | |
9 | #include "main-func.h" | |
10 | #include "signal-util.h" | |
11 | ||
12 | /* This service offers two Varlink services, both implementing io.systemd.UserDatabase: | |
13 | * | |
14 | * → io.systemd.NameServiceSwitch: this is a compatibility interface for glibc NSS: it response to | |
15 | * name lookups by checking the classic NSS interfaces and responding that. | |
16 | * | |
17 | * → io.systemd.Multiplexer: this multiplexes lookup requests to all Varlink services that have a | |
18 | * socket in /run/systemd/userdb/. It's supposed to simplify clients that don't want to implement | |
19 | * the full iterative logic on their own. | |
20 | */ | |
21 | ||
22 | static int run(int argc, char *argv[]) { | |
d093b62c | 23 | _cleanup_(manager_freep) Manager *m = NULL; |
272ac70a | 24 | _cleanup_(notify_on_cleanup) const char *notify_stop = NULL; |
d093b62c LP |
25 | int r; |
26 | ||
27 | log_setup_service(); | |
28 | ||
29 | umask(0022); | |
30 | ||
31 | if (argc != 1) | |
32 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "This program takes no arguments."); | |
33 | ||
34 | if (setenv("SYSTEMD_BYPASS_USERDB", "io.systemd.NameServiceSwitch:io.systemd.Multiplexer", 1) < 0) | |
35 | return log_error_errno(errno, "Failed to se $SYSTEMD_BYPASS_USERDB: %m"); | |
36 | ||
37 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, SIGTERM, SIGINT, SIGUSR2, -1) >= 0); | |
38 | ||
39 | r = manager_new(&m); | |
40 | if (r < 0) | |
41 | return log_error_errno(r, "Could not create manager: %m"); | |
42 | ||
43 | r = manager_startup(m); | |
44 | if (r < 0) | |
45 | return log_error_errno(r, "Failed to start up daemon: %m"); | |
46 | ||
47 | notify_stop = notify_start(NOTIFY_READY, NOTIFY_STOPPING); | |
48 | ||
49 | r = sd_event_loop(m->event); | |
50 | if (r < 0) | |
51 | return log_error_errno(r, "Event loop failed: %m"); | |
52 | ||
53 | return 0; | |
54 | } | |
55 | ||
56 | DEFINE_MAIN_FUNCTION(run); |