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qemu: only report errno in trace message on failure

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Avoid reporting a stale errno value when the syscall succeeds,
instead always pass 0.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange 2016-08-02 11:48:01 +01:00
parent 8dbc95cbd1
commit 9cf3c44ff5
1 changed files with 2 additions and 2 deletions
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4
src/qemu/qemu_monitor.c
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@ -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) {