From: David Herrmann <dh.herrmann@gmail.com>
Date: Sat, 4 Jul 2015 10:11:22 +0000 (+0200)
Subject: busctl: flush stdout after dumping data
X-Git-Tag: v226.4~1^2~233
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=260ec60412d6488016a39c8f8ee58273e2514ab1

busctl: flush stdout after dumping data

Running `busctl monitor` currently buffers data for several seconds /
kilobytes before writing stdout. This is highly confusing if you dump in a
file, ^C busctl and then end up with a file with data of the last few
_seconds_ missing.

Fix this by explicitly flushing after each signal.
---

diff --git a/src/libelogind/sd-bus/busctl.c b/src/libelogind/sd-bus/busctl.c
index 704939c6c..6aaaf0e5e 100644
--- a/src/libelogind/sd-bus/busctl.c
+++ b/src/libelogind/sd-bus/busctl.c
@@ -1137,6 +1137,7 @@ static int monitor(sd_bus *bus, char *argv[], int (*dump)(sd_bus_message *m, FIL
 
                 if (m) {
                         dump(m, stdout);
+                        fflush(stdout);
 
                         if (sd_bus_message_is_signal(m, "org.freedesktop.DBus.Local", "Disconnected") > 0) {
                                 log_info("Connection terminated, exiting.");