sd-journal: make sure it's safe to call sd_journal_process() before the first sd_jour...

In that case we have no inotify fd yet, and there's nothing to process
hence. Let's make the call a NOP.

(Previously, without this change we'd end up trying to read off inotify
fd -1, which is quite a problem... 😢)

diff --git a/src/journal/sd-journal.c b/src/journal/sd-journal.c
index 221c51e..4deee46 100644 (file)
--- a/src/journal/sd-journal.c
+++ b/src/journal/sd-journal.c
@@ -2540,6 +2540,9 @@ _public_ int sd_journal_process(sd_journal *j) {
         assert_return(j, -EINVAL);
         assert_return(!journal_pid_changed(j), -ECHILD);
 
+        if (j->inotify_fd < 0) /* We have no inotify fd yet? Then there's noting to process. */
+                return 0;
+
         j->last_process_usec = now(CLOCK_MONOTONIC);
         j->last_invalidate_counter = j->current_invalidate_counter;