Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 138 insertions, 0 deletions

diff --git a/src/journal/journald.c b/src/journal/journald.c
new file mode 100644
index 0000000..94aad05
--- /dev/null
+++ b/src/journal/journald.c
@@ -0,0 +1,138 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <unistd.h>
+
+#include "sd-daemon.h"
+#include "sd-messages.h"
+
+#include "format-util.h"
+#include "journal-authenticate.h"
+#include "journald-kmsg.h"
+#include "journald-server.h"
+#include "journald-syslog.h"
+#include "process-util.h"
+#include "sigbus.h"
+
+int main(int argc, char *argv[]) {
+        const char *namespace;
+        LogTarget log_target;
+        Server server;
+        int r;
+
+        if (argc > 2) {
+                log_error("This program takes one or no arguments.");
+                return EXIT_FAILURE;
+        }
+
+        namespace = argc > 1 ? empty_to_null(argv[1]) : NULL;
+
+        log_set_facility(LOG_SYSLOG);
+
+        if (namespace)
+                /* If we run for a log namespace, then we ourselves can log to the main journald. */
+                log_setup();
+        else {
+                /* So here's the deal if we run as the main journald: we can't be considered as regular
+                 * daemon when it comes to logging hence LOG_TARGET_AUTO won't do the right thing for
+                 * us. Hence explicitly log to the console if we're started from a console or to kmsg
+                 * otherwise. */
+                log_target = isatty(STDERR_FILENO) > 0 ? LOG_TARGET_CONSOLE : LOG_TARGET_KMSG;
+
+                log_set_prohibit_ipc(true); /* better safe than sorry */
+                log_set_target(log_target);
+                log_parse_environment();
+                log_open();
+        }
+
+        umask(0022);
+
+        sigbus_install();
+
+        r = server_init(&server, namespace);
+        if (r < 0)
+                goto finish;
+
+        server_vacuum(&server, false);
+        server_flush_to_var(&server, true);
+        server_flush_dev_kmsg(&server);
+
+        if (server.namespace)
+                log_debug("systemd-journald running as PID "PID_FMT" for namespace '%s'.", getpid_cached(), server.namespace);
+        else
+                log_debug("systemd-journald running as PID "PID_FMT" for the system.", getpid_cached());
+
+        server_driver_message(&server, 0,
+                              "MESSAGE_ID=" SD_MESSAGE_JOURNAL_START_STR,
+                              LOG_MESSAGE("Journal started"),
+                              NULL);
+
+        /* Make sure to send the usage message *after* flushing the
+         * journal so entries from the runtime journals are ordered
+         * before this message. See #4190 for some details. */
+        server_space_usage_message(&server, NULL);
+
+        for (;;) {
+                usec_t t = USEC_INFINITY, n;
+
+                r = sd_event_get_state(server.event);
+                if (r < 0) {
+                        log_error_errno(r, "Failed to get event loop state: %m");
+                        goto finish;
+                }
+                if (r == SD_EVENT_FINISHED)
+                        break;
+
+                n = now(CLOCK_REALTIME);
+
+                if (server.max_retention_usec > 0 && server.oldest_file_usec > 0) {
+
+                        /* The retention time is reached, so let's vacuum! */
+                        if (server.oldest_file_usec + server.max_retention_usec < n) {
+                                log_info("Retention time reached, rotating.");
+                                server_rotate(&server);
+                                server_vacuum(&server, false);
+                                continue;
+                        }
+
+                        /* Calculate when to rotate the next time */
+                        t = server.oldest_file_usec + server.max_retention_usec - n;
+                }
+
+#if HAVE_GCRYPT
+                if (server.system_journal) {
+                        usec_t u;
+
+                        if (journal_file_next_evolve_usec(server.system_journal, &u)) {
+                                if (n >= u)
+                                        t = 0;
+                                else
+                                        t = MIN(t, u - n);
+                        }
+                }
+#endif
+
+                r = sd_event_run(server.event, t);
+                if (r < 0) {
+                        log_error_errno(r, "Failed to run event loop: %m");
+                        goto finish;
+                }
+
+                server_maybe_append_tags(&server);
+                server_maybe_warn_forward_syslog_missed(&server);
+        }
+
+        if (server.namespace)
+                log_debug("systemd-journald stopped as PID "PID_FMT" for namespace '%s'.", getpid_cached(), server.namespace);
+        else
+                log_debug("systemd-journald stopped as PID "PID_FMT" for the system.", getpid_cached());
+
+        server_driver_message(&server, 0,
+                              "MESSAGE_ID=" SD_MESSAGE_JOURNAL_STOP_STR,
+                              LOG_MESSAGE("Journal stopped"),
+                              NULL);
+
+finish:
+        server_done(&server);
+
+        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}