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