[libvirt] [PATCH] qemu: only report errno in trace message on failure
Avoid reporting a stale errno value when the syscall succeeds,
instead always pass 0.
Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com>
---
src/qemu/qemu_monitor.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
index 58c04d5..6c9695e 100644
--- a/src/qemu/qemu_monitor.c
+++ b/src/qemu/qemu_monitor.c
@@ -528,12 +528,12 @@ qemuMonitorIOWrite(qemuMonitorPtr mon)
PROBE(QEMU_MONITOR_IO_WRITE,
"mon=%p buf=%s len=%zu ret=%d errno=%d",
- mon, buf, len, done, errno);
+ mon, buf, len, done, done < 0 ? errno : 0);
if (mon->msg->txFD != -1) {
PROBE(QEMU_MONITOR_IO_SEND_FD,
"mon=%p fd=%d ret=%d errno=%d",
- mon, mon->msg->txFD, done, errno);
+ mon, mon->msg->txFD, done, done < 0 ? errno : 0);
}
if (done < 0) {
--
2.7.4