log: never ever log to syslog from PID 1, log to the journal again

We don't support journal-less systems anyway, so let's avoid the
confusion.

2 files changed, 15 insertions, 0 deletions

diff --git a/src/shared/log.c b/src/shared/log.c
index 078ccdc35b..2bac998bcd 100644
--- a/src/shared/log.c
+++ b/src/shared/log.c
@@ -51,6 +51,8 @@ static bool syslog_is_stream = false;
 static bool show_color = false;
 static bool show_location = false;
 
+static bool upgrade_syslog_to_journal = false;
+
 /* Akin to glibc's __abort_msg; which is private and we hence cannot
  * use here. */
 static char *log_abort_msg = NULL;
@@ -267,6 +269,13 @@ void log_set_target(LogTarget target) {
         assert(target >= 0);
         assert(target < _LOG_TARGET_MAX);
 
+        if (upgrade_syslog_to_journal) {
+                if (target == LOG_TARGET_SYSLOG)
+                        target = LOG_TARGET_JOURNAL;
+                else if (target == LOG_TARGET_SYSLOG_OR_KMSG)
+                        target = LOG_TARGET_JOURNAL_OR_KMSG;
+        }
+
         log_target = target;
 }
 
@@ -984,3 +993,7 @@ void log_received_signal(int level, const struct signalfd_siginfo *si) {
                          signal_to_string(si->ssi_signo));
 
 }
+
+void log_set_upgrade_syslog_to_journal(bool b) {
+        upgrade_syslog_to_journal = b;
+}
diff --git a/src/shared/log.h b/src/shared/log.h
index 794af7be6a..9918381d39 100644
--- a/src/shared/log.h
+++ b/src/shared/log.h
@@ -172,3 +172,5 @@ LogTarget log_target_from_string(const char *s) _pure_;
 #define MESSAGE_ID(x) "MESSAGE_ID=" SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(x)
 
 void log_received_signal(int level, const struct signalfd_siginfo *si);
+
+void log_set_upgrade_syslog_to_journal(bool b);