Re: [libvirt] [PATCH] qemu: hotplug: fix changeable media ejection
On 07/08/2016 06:30 AM, Bjoern Walk wrote:
Since return code is checked globally at the end of the function,
let's
make sure that we set it correctly at any point.
This fixes a regression introduced in commit 0aa19f35 where the first
command to eject changeable media would fail unconditionally.
Signed-off-by: Bjoern Walk <bwalk(a)linux.vnet.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy(a)linux.vnet.ibm.com>
---
src/qemu/qemu_hotplug.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index c322543..789f18c 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -240,7 +240,8 @@ qemuDomainChangeEjectableMedia(virQEMUDriverPtr driver,
/* If the tray is present and tray change event is supported wait for it to open.
*/
if (diskPriv->tray &&
virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DEVICE_TRAY_MOVED)) {
- if (qemuHotplugWaitForTrayEject(driver, vm, disk, driveAlias, force) < 0)
+ rc = qemuHotplugWaitForTrayEject(driver, vm, disk, driveAlias, force);
+ if (rc < 0)
goto error;
But rc isn't checked in the error and cleanup labels in
qemuDomainChangeEjectableMedia, so not sure what the purpose of setting
rc is. What am I missing?
The existing "else" in the code is for (diskPriv->tray &&
virQEMU...)
condition as I see it.
If perhaps you had just set rc, not done the goto, and remove the else
condition, e.g.:
if (diskPriv... && virQEMUCaps...)
rc = qemuHotplugWait...
if (rc < 0)
goto error;
that's just doing the same thing in a different way.
John
} else {
/* otherwise report possible errors from the attempt to eject the media*/