Re: [PATCH 2/6] qemuxml2argvtest: Don't spawn session daemon

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On 07/09/2018 12:44 PM, Daniel P. Berrangé wrote:
> On Mon, Jul 09, 2018 at 11:56:10AM +0200, Michal Privoznik wrote:
>> After f14c37ce4c2ccd111 the cleanup path for
>> qemuBuildInterfaceCommandLine() and qemuBuildNetCommandLine()
>> tries to connect to nwfilter driver in order to tear down any
>> NWFilter that was brought up during cmd line construction. Since
>> we also have negative test cases where errors during cmd line
>> build are expected the cleanup paths are executed and NWFilter
>> removal is attempted.
>>
>> Fortunately, there is another bug that by pure luck prevented us
>> from actually spawning the daemon and thus modifying actual user
>> data. See next commit for explanation.
>>
>> Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
>> ---
>>  src/driver.h             | 2 +-
>>  tests/qemuxml2argvmock.c | 7 +++++++
>>  2 files changed, 8 insertions(+), 1 deletion(-)
>>
>> diff --git a/src/driver.h b/src/driver.h
>> index 0b1f7a2269..0a0d8facee 100644
>> --- a/src/driver.h
>> +++ b/src/driver.h
>> @@ -113,7 +113,7 @@ int virDriverLoadModule(const char *name,
>>  
>>  virConnectPtr virGetConnectInterface(void);
>>  virConnectPtr virGetConnectNetwork(void);
>> -virConnectPtr virGetConnectNWFilter(void);
>> +virConnectPtr virGetConnectNWFilter(void) ATTRIBUTE_NOINLINE;
>>  virConnectPtr virGetConnectNodeDev(void);
>>  virConnectPtr virGetConnectSecret(void);
>>  virConnectPtr virGetConnectStorage(void);
>> diff --git a/tests/qemuxml2argvmock.c b/tests/qemuxml2argvmock.c
>> index 4df92cf396..13ccfb855d 100644
>> --- a/tests/qemuxml2argvmock.c
>> +++ b/tests/qemuxml2argvmock.c
>> @@ -233,3 +233,10 @@ qemuOpenChrChardevUNIXSocket(const virDomainChrSourceDef *dev ATTRIBUTE_UNUSED)
>>          abort();
>>      return 1729;
>>  }
>> +
>> +
>> +virConnectPtr
>> +virGetConnectNWFilter(void)
>> +{
>> +    return NULL;
>> +}
> 
> In qemuxml2argvtest.c we actally set a fake shared connection, but I only
> set it for two of the drivers. We should just register it for all the
> drivers. eg expand these lines:
> 
>     virSetConnectSecret(conn);
>     virSetConnectStorage(conn);

Oh, that means I have to provide some basic implementation. I can't just
set conn->nwFilterDriver = NULL; because then virGetConnectNWFilte()
would still try to connect.

Okay, I think I can do it.

Michal

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