[libvirt] [PATCH 1/7] qemu: Alter error path cleanup for qemuDomainAttachHostSCSIDevice
Based on recent review comment - rather than have a spate of goto failxxxx,
change to a boolean based model. Ensures that the original error can be
preserved and cleanup is a bit more orderly if more objects are added.
Signed-off-by: John Ferlan <jferlan(a)redhat.com>
---
src/qemu/qemu_hotplug.c | 20 +++++++++-----------
1 file changed, 9 insertions(+), 11 deletions(-)
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 04e11b4..10120aa 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -1874,6 +1874,7 @@ qemuDomainAttachHostSCSIDevice(virConnectPtr conn,
char *drvstr = NULL;
bool teardowncgroup = false;
bool teardownlabel = false;
+ bool cleanupAddDrive = false;
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DEVICE_SCSI_GENERIC)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
@@ -1935,17 +1936,17 @@ qemuDomainAttachHostSCSIDevice(virConnectPtr conn,
if (VIR_REALLOC_N(vm->def->hostdevs, vm->def->nhostdevs + 1) < 0)
goto cleanup;
- /* Attach the device - 2 step process */
qemuDomainObjEnterMonitor(driver, vm);
if (qemuMonitorAddDrive(priv->mon, drvstr) < 0)
- goto failadddrive;
+ goto monitor_error;
+ cleanupAddDrive = true;
if (qemuMonitorAddDevice(priv->mon, devstr) < 0)
- goto failadddevice;
+ goto monitor_error;
if (qemuDomainObjExitMonitor(driver, vm) < 0)
- goto failexitmonitor;
+ goto cleanup;
virDomainAuditHostdev(vm, hostdev, "attach", true);
@@ -1968,21 +1969,18 @@ qemuDomainAttachHostSCSIDevice(virConnectPtr conn,
VIR_FREE(devstr);
return ret;
- failadddevice:
+ monitor_error:
orig_err = virSaveLastError();
- if (qemuMonitorDriveDel(priv->mon, drvstr) < 0)
+ if (cleanupAddDrive && qemuMonitorDriveDel(priv->mon, drvstr) < 0) {
VIR_WARN("Unable to remove drive %s (%s) after failed "
"qemuMonitorAddDevice",
drvstr, devstr);
+ }
+ ignore_value(qemuDomainObjExitMonitor(driver, vm));
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
-
- failadddrive:
- ignore_value(qemuDomainObjExitMonitor(driver, vm));
-
- failexitmonitor:
virDomainAuditHostdev(vm, hostdev, "attach", false);
goto cleanup;
--
2.5.5