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qemu: hotplug: Use new helpers for storing libvirt errors

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The helpers allow to simplify restoring original errors in most cases.
This commit is contained in:
Peter Krempa 2017-09-12 10:32:27 +02:00
parent 8333e7455e
commit 6f18150f7b
1 changed files with 28 additions and 65 deletions
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93
src/qemu/qemu_hotplug.c
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@ -433,7 +433,7 @@ qemuDomainAttachVirtioDiskDevice(virConnectPtr conn,
return ret;
exit_monitor:
orig_err = virSaveLastError();
virErrorPreserveLast(&orig_err);
if (driveAdded && qemuMonitorDriveDel(priv->mon, drivealias) < 0) {
VIR_WARN("Unable to remove drive %s (%s) after failed "
"qemuMonitorAddDevice", drivealias, drivestr);
@ -444,11 +444,7 @@ qemuDomainAttachVirtioDiskDevice(virConnectPtr conn,
ignore_value(qemuMonitorDelObject(priv->mon, encinfo->s.aes.alias));
if (qemuDomainObjExitMonitor(driver, vm) < 0)
releaseaddr = false;
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
virErrorRestore(&orig_err);
virDomainAuditDisk(vm, NULL, disk->src, "attach", false);
@ -722,7 +718,7 @@ qemuDomainAttachSCSIDisk(virConnectPtr conn,
return ret;
exit_monitor:
orig_err = virSaveLastError();
virErrorPreserveLast(&orig_err);
if (driveAdded && qemuMonitorDriveDel(priv->mon, drivealias) < 0) {
VIR_WARN("Unable to remove drive %s (%s) after failed "
"qemuMonitorAddDevice", drivealias, drivestr);
@ -732,10 +728,7 @@ qemuDomainAttachSCSIDisk(virConnectPtr conn,
if (encobjAdded)
ignore_value(qemuMonitorDelObject(priv->mon, encinfo->s.aes.alias));
ignore_value(qemuDomainObjExitMonitor(driver, vm));
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
virErrorRestore(&orig_err);
virDomainAuditDisk(vm, NULL, disk->src, "attach", false);
@ -819,16 +812,13 @@ qemuDomainAttachUSBMassStorageDevice(virQEMUDriverPtr driver,
return ret;
exit_monitor:
orig_err = virSaveLastError();
virErrorPreserveLast(&orig_err);
if (driveAdded && qemuMonitorDriveDel(priv->mon, drivealias) < 0) {
VIR_WARN("Unable to remove drive %s (%s) after failed "
"qemuMonitorAddDevice", drivealias, drivestr);
}
ignore_value(qemuDomainObjExitMonitor(driver, vm));
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
virErrorRestore(&orig_err);
virDomainAuditDisk(vm, NULL, disk->src, "attach", false);
@ -1356,7 +1346,7 @@ qemuDomainAttachNetDevice(virQEMUDriverPtr driver,
if (!virDomainObjIsActive(vm))
goto cleanup;
originalError = virSaveLastError();
virErrorPreserveLast(&originalError);
if (vlan < 0) {
if (virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_NETDEV)) {
char *netdev_name;
@ -1387,8 +1377,7 @@ qemuDomainAttachNetDevice(virQEMUDriverPtr driver,
VIR_FREE(hostnet_name);
}
}
virSetError(originalError);
virFreeError(originalError);
virErrorRestore(&originalError);
goto cleanup;
}
@ -1562,7 +1551,7 @@ qemuDomainDelTLSObjects(virQEMUDriverPtr driver,
if (!tlsAlias && !secAlias)
return;
orig_err = virSaveLastError();
virErrorPreserveLast(&orig_err);
if (qemuDomainObjEnterMonitorAsync(driver, vm, asyncJob) < 0)
goto cleanup;
@ -1576,10 +1565,7 @@ qemuDomainDelTLSObjects(virQEMUDriverPtr driver,
ignore_value(qemuDomainObjExitMonitor(driver, vm));
cleanup:
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
virErrorRestore(&orig_err);
}
@ -1621,12 +1607,9 @@ qemuDomainAddTLSObjects(virQEMUDriverPtr driver,
return qemuDomainObjExitMonitor(driver, vm);
error:
orig_err = virSaveLastError();
virErrorPreserveLast(&orig_err);
ignore_value(qemuDomainObjExitMonitor(driver, vm));
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
virErrorRestore(&orig_err);
qemuDomainDelTLSObjects(driver, vm, asyncJob, secAlias, tlsAlias);
return -1;
@ -1788,15 +1771,12 @@ int qemuDomainAttachRedirdevDevice(virConnectPtr conn,
return ret;
exit_monitor:
orig_err = virSaveLastError();
virErrorPreserveLast(&orig_err);
/* detach associated chardev on error */
if (chardevAdded)
ignore_value(qemuMonitorDetachCharDev(priv->mon, charAlias));
ignore_value(qemuDomainObjExitMonitor(driver, vm));
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
virErrorRestore(&orig_err);
qemuDomainDelTLSObjects(driver, vm, QEMU_ASYNC_JOB_NONE,
secAlias, tlsAlias);
goto audit;
@ -2051,15 +2031,12 @@ int qemuDomainAttachChrDevice(virConnectPtr conn,
return ret;
exit_monitor:
orig_err = virSaveLastError();
virErrorPreserveLast(&orig_err);
/* detach associated chardev on error */
if (chardevAttached)
qemuMonitorDetachCharDev(priv->mon, charAlias);
ignore_value(qemuDomainObjExitMonitor(driver, vm));
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
virErrorRestore(&orig_err);
qemuDomainDelTLSObjects(driver, vm, QEMU_ASYNC_JOB_NONE,
secAlias, tlsAlias);
@ -2202,17 +2179,14 @@ qemuDomainAttachRNGDevice(virConnectPtr conn,
return ret;
exit_monitor:
orig_err = virSaveLastError();
virErrorPreserveLast(&orig_err);
if (objAdded)
ignore_value(qemuMonitorDelObject(priv->mon, objAlias));
if (rng->backend == VIR_DOMAIN_RNG_BACKEND_EGD && chardevAdded)
ignore_value(qemuMonitorDetachCharDev(priv->mon, charAlias));
if (qemuDomainObjExitMonitor(driver, vm) < 0)
releaseaddr = false;
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
virErrorRestore(&orig_err);
qemuDomainDelTLSObjects(driver, vm, QEMU_ASYNC_JOB_NONE,
secAlias, tlsAlias);
@ -2349,15 +2323,12 @@ qemuDomainAttachMemory(virQEMUDriverPtr driver,
return ret;
exit_monitor:
orig_err = virSaveLastError();
virErrorPreserveLast(&orig_err);
if (objAdded)
ignore_value(qemuMonitorDelObject(priv->mon, objalias));
if (qemuDomainObjExitMonitor(driver, vm) < 0)
mem = NULL;
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
virErrorRestore(&orig_err);
if (!mem)
goto audit;
@ -2368,10 +2339,9 @@ qemuDomainAttachMemory(virQEMUDriverPtr driver,
mem = NULL;
/* reset the mlock limit */
orig_err = virSaveLastError();
virErrorPreserveLast(&orig_err);
ignore_value(qemuDomainAdjustMaxMemLock(vm));
virSetError(orig_err);
virFreeError(orig_err);
virErrorRestore(&orig_err);
goto audit;
}
@ -2561,17 +2531,14 @@ qemuDomainAttachHostSCSIDevice(virConnectPtr conn,
return ret;
exit_monitor:
orig_err = virSaveLastError();
virErrorPreserveLast(&orig_err);
if (driveAdded && qemuMonitorDriveDel(priv->mon, drivealias) < 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);
}
virErrorRestore(&orig_err);
virDomainAuditHostdev(vm, hostdev, "attach", false);
@ -2846,7 +2813,7 @@ qemuDomainAttachShmemDevice(virQEMUDriverPtr driver,
return ret;
exit_monitor:
orig_err = virSaveLastError();
virErrorPreserveLast(&orig_err);
if (release_backing) {
if (shmem->server.enabled)
ignore_value(qemuMonitorDetachCharDev(priv->mon, charAlias));
@ -2857,10 +2824,7 @@ qemuDomainAttachShmemDevice(virQEMUDriverPtr driver,
if (qemuDomainObjExitMonitor(driver, vm) < 0)
release_address = false;
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
virErrorRestore(&orig_err);
goto audit;
}
@ -2948,10 +2912,9 @@ qemuDomainChangeNetFilter(virDomainObjPtr vm,
_("failed to add new filter rules to '%s' "
"- attempting to restore old rules"),
olddev->ifname);
errobj = virSaveLastError();
virErrorPreserveLast(&errobj);
ignore_value(virDomainConfNWFilterInstantiate(vm->def->uuid, olddev));
virSetError(errobj);
virFreeError(errobj);
virErrorRestore(&errobj);
return -1;
}
return 0;