Re: [PATCH v2 04/14] qemu: Refactor hotplug to introduce qemuDomain{Add|Del}TLSObjects

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On 02/27/2017 04:41 AM, Jiri Denemark wrote:
> On Thu, Feb 23, 2017 at 13:42:06 -0500, John Ferlan wrote:
>> Refactor the TLS object adding code to make two separate API's that will
>> handle the add/remove of the "secret" and "tls-creds-x509" objects including
>> the Enter/Exit monitor commands.
>>
>> Signed-off-by: John Ferlan <jferlan@xxxxxxxxxx>
>> ---
>>  src/qemu/qemu_hotplug.c | 165 +++++++++++++++++++++++++++---------------------
>>  src/qemu/qemu_hotplug.h |  13 ++++
>>  2 files changed, 107 insertions(+), 71 deletions(-)
>>
>> diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
>> index 9e2f04b..bb90a34 100644
>> --- a/src/qemu/qemu_hotplug.c
>> +++ b/src/qemu/qemu_hotplug.c
>> @@ -1525,6 +1525,85 @@ qemuDomainAttachHostPCIDevice(virQEMUDriverPtr driver,
>>  }
>>  
>>  
>> +void
>> +qemuDomainDelTLSObjects(virQEMUDriverPtr driver,
>> +                        virDomainObjPtr vm,
>> +                        const char *secAlias,
>> +                        const char *tlsAlias)
>> +{
>> +    qemuDomainObjPrivatePtr priv = vm->privateData;
>> +    virErrorPtr orig_err;
>> +
>> +    if (!tlsAlias && !secAlias)
>> +        return;
>> +
>> +    orig_err = virSaveLastError();
>> +
>> +    qemuDomainObjEnterMonitor(driver, vm);
>> +
>> +    if (tlsAlias)
>> +        ignore_value(qemuMonitorDelObject(priv->mon, tlsAlias));
>> +
>> +    if (secAlias)
>> +        ignore_value(qemuMonitorDelObject(priv->mon, secAlias));
>> +
>> +    ignore_value(qemuDomainObjExitMonitor(driver, vm));
>> +
>> +    if (orig_err) {
>> +        virSetError(orig_err);
>> +        virFreeError(orig_err);
>> +    }
>> +}
>> +
>> +
>> +int
>> +qemuDomainAddTLSObjects(virQEMUDriverPtr driver,
>> +                        virDomainObjPtr vm,
>> +                        const char *secAlias,
>> +                        virJSONValuePtr *secProps,
>> +                        const char *tlsAlias,
>> +                        virJSONValuePtr *tlsProps)
>> +{
>> +    qemuDomainObjPrivatePtr priv = vm->privateData;
>> +    int rc;
>> +    virErrorPtr orig_err;
>> +
>> +    if (!tlsAlias && !secAlias)
>> +        return 0;
>> +
>> +    qemuDomainObjEnterMonitor(driver, vm);
>> +
>> +    if (secAlias) {
>> +        rc = qemuMonitorAddObject(priv->mon, "secret",
>> +                                  secAlias, *secProps);
>> +        *secProps = NULL; /* qemuMonitorAddObject consumes */
>> +        if (rc < 0)
>> +            goto exit_monitor;
>> +    }
>> +
>> +    if (tlsAlias) {
>> +        rc = qemuMonitorAddObject(priv->mon, "tls-creds-x509",
>> +                                  tlsAlias, *tlsProps);
>> +        *tlsProps = NULL; /* qemuMonitorAddObject consumes */
>> +        if (rc < 0)
>> +            goto exit_monitor;
>> +    }
>> +
>> +    return qemuDomainObjExitMonitor(driver, vm);
>> +
>> + exit_monitor:
> 
> I'd prefer "error" label since this is not the only place where
> ExitMonitor is called.
> 

I can change to error - doesn't really matter.  The 'exit_monitor' label
has been used generically in a number of other places even though an
ExitMonitor is called in each instance on the non failure path.  Most of
those though span quite a few lines of scrolling to find the
exit_monitor label.


John


>> +    orig_err = virSaveLastError();
>> +    ignore_value(qemuDomainObjExitMonitor(driver, vm));
>> +    if (orig_err) {
>> +        virSetError(orig_err);
>> +        virFreeError(orig_err);
>> +    }
>> +    qemuDomainDelTLSObjects(driver, vm, secAlias, tlsAlias);
>> +
>> +    return -1;
>> +}
> 
> Jirka
> 

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