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Commit | Line | Data |
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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
87d2c1ff | 2 | |
87d2c1ff | 3 | #include <unistd.h> |
87d2c1ff | 4 | |
8580d1f7 | 5 | #include "sd-daemon.h" |
cf0fbc49 | 6 | #include "sd-messages.h" |
81527be1 | 7 | |
f97b34a6 | 8 | #include "format-util.h" |
89fef990 | 9 | #include "journal-authenticate.h" |
ef63833d | 10 | #include "journald-kmsg.h" |
cf0fbc49 | 11 | #include "journald-server.h" |
35e2e347 | 12 | #include "journald-syslog.h" |
80b1156b | 13 | #include "main-func.h" |
dccca82b | 14 | #include "process-util.h" |
fa6ac760 | 15 | #include "sigbus.h" |
dd9c8da8 | 16 | #include "terminal-util.h" |
fa6ac760 | 17 | |
80b1156b YW |
18 | static int run(int argc, char *argv[]) { |
19 | _cleanup_(server_freep) Server *s = NULL; | |
b1852c48 | 20 | const char *namespace; |
b3d6eb01 | 21 | LogTarget log_target; |
87d2c1ff LP |
22 | int r; |
23 | ||
80b1156b YW |
24 | if (argc > 2) |
25 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "This program takes one or no arguments."); | |
87d2c1ff | 26 | |
b1852c48 LP |
27 | namespace = argc > 1 ? empty_to_null(argv[1]) : NULL; |
28 | ||
3eff4208 | 29 | log_set_facility(LOG_SYSLOG); |
e68778a3 LP |
30 | |
31 | if (namespace) | |
32 | /* If we run for a log namespace, then we ourselves can log to the main journald. */ | |
33 | log_setup(); | |
34 | else { | |
35 | /* So here's the deal if we run as the main journald: we can't be considered as regular | |
36 | * daemon when it comes to logging hence LOG_TARGET_AUTO won't do the right thing for | |
37 | * us. Hence explicitly log to the console if we're started from a console or to kmsg | |
38 | * otherwise. */ | |
dd9c8da8 | 39 | log_target = isatty(STDERR_FILENO) ? LOG_TARGET_CONSOLE : LOG_TARGET_KMSG; |
e68778a3 LP |
40 | |
41 | log_set_prohibit_ipc(true); /* better safe than sorry */ | |
42 | log_set_target(log_target); | |
43 | log_parse_environment(); | |
44 | log_open(); | |
45 | } | |
87d2c1ff LP |
46 | |
47 | umask(0022); | |
48 | ||
fa6ac760 LP |
49 | sigbus_install(); |
50 | ||
80b1156b YW |
51 | r = server_new(&s); |
52 | if (r < 0) | |
53 | return log_oom(); | |
54 | ||
55 | r = server_init(s, namespace); | |
87d2c1ff | 56 | if (r < 0) |
80b1156b | 57 | return r; |
87d2c1ff | 58 | |
6336c635 YW |
59 | server_vacuum(s, /* verbose = */ false); |
60 | server_flush_to_var(s, /* require_flag_file = */ true); | |
80b1156b | 61 | server_flush_dev_kmsg(s); |
e6960940 | 62 | |
80b1156b YW |
63 | if (s->namespace) |
64 | log_debug("systemd-journald running as PID "PID_FMT" for namespace '%s'.", getpid_cached(), s->namespace); | |
b1852c48 LP |
65 | else |
66 | log_debug("systemd-journald running as PID "PID_FMT" for the system.", getpid_cached()); | |
67 | ||
80b1156b | 68 | server_driver_message(s, 0, |
2b044526 | 69 | "MESSAGE_ID=" SD_MESSAGE_JOURNAL_START_STR, |
8a03c9ef ZJS |
70 | LOG_MESSAGE("Journal started"), |
71 | NULL); | |
87d2c1ff | 72 | |
18e758bf FB |
73 | /* Make sure to send the usage message *after* flushing the |
74 | * journal so entries from the runtime journals are ordered | |
75 | * before this message. See #4190 for some details. */ | |
80b1156b | 76 | server_space_usage_message(s, NULL); |
18e758bf | 77 | |
87d2c1ff | 78 | for (;;) { |
90c27eb4 | 79 | usec_t t, n; |
87d2c1ff | 80 | |
80b1156b YW |
81 | r = sd_event_get_state(s->event); |
82 | if (r < 0) | |
83 | return log_error_errno(r, "Failed to get event loop state: %m"); | |
565a9388 LP |
84 | if (r == SD_EVENT_FINISHED) |
85 | break; | |
86 | ||
2ae16d36 YW |
87 | r = sd_event_now(s->event, CLOCK_REALTIME, &n); |
88 | if (r < 0) | |
89 | return log_error_errno(r, "Failed to get the current time: %m"); | |
89fef990 | 90 | |
80b1156b | 91 | if (s->max_retention_usec > 0 && s->oldest_file_usec > 0) { |
90c27eb4 YW |
92 | /* Calculate when to rotate the next time */ |
93 | t = usec_sub_unsigned(usec_add(s->oldest_file_usec, s->max_retention_usec), n); | |
89fef990 | 94 | |
fb0951b0 | 95 | /* The retention time is reached, so let's vacuum! */ |
90c27eb4 | 96 | if (t <= 0) { |
b2b7cf1d | 97 | log_info("Retention time reached, rotating."); |
80b1156b | 98 | server_rotate(s); |
6336c635 | 99 | server_vacuum(s, /* verbose = */ false); |
fb0951b0 LP |
100 | continue; |
101 | } | |
90c27eb4 YW |
102 | } else |
103 | t = USEC_INFINITY; | |
fb0951b0 | 104 | |
349cc4a5 | 105 | #if HAVE_GCRYPT |
80b1156b | 106 | if (s->system_journal) { |
fb0951b0 LP |
107 | usec_t u; |
108 | ||
90c27eb4 YW |
109 | if (journal_file_next_evolve_usec(s->system_journal, &u)) |
110 | t = MIN(t, usec_sub_unsigned(u, n)); | |
fb0951b0 | 111 | } |
89fef990 | 112 | #endif |
89fef990 | 113 | |
80b1156b YW |
114 | r = sd_event_run(s->event, t); |
115 | if (r < 0) | |
116 | return log_error_errno(r, "Failed to run event loop: %m"); | |
87d2c1ff | 117 | |
80b1156b YW |
118 | server_maybe_append_tags(s); |
119 | server_maybe_warn_forward_syslog_missed(s); | |
87d2c1ff LP |
120 | } |
121 | ||
80b1156b YW |
122 | if (s->namespace) |
123 | log_debug("systemd-journald stopped as PID "PID_FMT" for namespace '%s'.", getpid_cached(), s->namespace); | |
b1852c48 LP |
124 | else |
125 | log_debug("systemd-journald stopped as PID "PID_FMT" for the system.", getpid_cached()); | |
126 | ||
80b1156b | 127 | server_driver_message(s, 0, |
2b044526 | 128 | "MESSAGE_ID=" SD_MESSAGE_JOURNAL_STOP_STR, |
8a03c9ef ZJS |
129 | LOG_MESSAGE("Journal stopped"), |
130 | NULL); | |
fe652127 | 131 | |
80b1156b | 132 | return 0; |
87d2c1ff | 133 | } |
80b1156b YW |
134 | |
135 | DEFINE_MAIN_FUNCTION(run); |