lib: ostream-file - Don't try to set TCP options after stream is closed

Flushing the buffer could close the stream and the fd.

diff --git a/src/lib/ostream-file.c b/src/lib/ostream-file.c
index 5456f39bfc2497af73b1e9ea5c46d82ea44d52c1..fcfc8b9090792b88e35e678bb2e2b6eecf4c16b3 100644 (file)
--- a/src/lib/ostream-file.c
+++ b/src/lib/ostream-file.c
@@ -370,6 +370,10 @@ static void o_stream_file_cork(struct ostream_private *stream, bool set)
                                        stream_send_io, fstream);
                        }
                }
+               if (stream->ostream.closed) {
+                       /* flushing may have closed the stream already */
+                       return;
+               }
 
                if (fstream->socket_cork_set) {
                        i_assert(!set);