[dm-devel] [PATCH] libmultipath: avoid buffer size warning with systemd 240+

[mwilck at suse.com]

From: Martin Wilck <mwilck at suse.com>

Since systemd commit e39b4d2 ("libudev: re-implement udev-monitor by
sd_device_monitor"), udev_monitor_set_receive_buffer_size() returns 1
on success. Fix the test for the return value to avoid a misleading
"failed to increase buffer size" warning.

Signed-off-by: Martin Wilck <mwilck at suse.com>
---
 libmultipath/uevent.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libmultipath/uevent.c b/libmultipath/uevent.c
index d3061bf..4265904 100644
--- a/libmultipath/uevent.c
+++ b/libmultipath/uevent.c
@@ -569,7 +569,7 @@ int uevent_listen(struct udev *udev)
 	}
 	pthread_cleanup_push(monitor_cleanup, monitor);
 #ifdef LIBUDEV_API_RECVBUF
-	if (udev_monitor_set_receive_buffer_size(monitor, 128 * 1024 * 1024))
+	if (udev_monitor_set_receive_buffer_size(monitor, 128 * 1024 * 1024) < 0)
 		condlog(2, "failed to increase buffer size");
 #endif
 	fd = udev_monitor_get_fd(monitor);
-- 
2.32.0