2018-07-03 11:31 GMT+02:00 Michal Prívozník <mprivozn(a)redhat.com>:
On 07/03/2018 04:20 AM, Marcos Paulo de Souza wrote:
> The same pattern is used in lots of other places.
>
> Signed-off-by: Marcos Paulo de Souza <marcos.souza.org(a)gmail.com>
> ---
> src/esx/esx_vi.c | 14 ++++----------
> 1 file changed, 4 insertions(+), 10 deletions(-)
>
> diff --git a/src/esx/esx_vi.c b/src/esx/esx_vi.c
> index 43ff7ea048..25fbdc7e44 100644
> --- a/src/esx/esx_vi.c
> +++ b/src/esx/esx_vi.c
> @@ -3014,16 +3014,10 @@ esxVI_LookupVirtualMachineByName(esxVI_Context *ctx, const
char *name,
> break;
> }
>
> - if (!(*virtualMachine)) {
> - if (occurrence == esxVI_Occurrence_OptionalItem) {
> - result = 0;
> -
> - goto cleanup;
> - } else {
> - virReportError(VIR_ERR_NO_DOMAIN,
> - _("Could not find domain with name
'%s'"), name);
> - goto cleanup;
> - }
> + if (!(*virtualMachine) && occurrence != esxVI_Occurrence_OptionalItem)
{
> + virReportError(VIR_ERR_NO_DOMAIN,
> + _("Could not find domain with name '%s'"),
name);
> + goto cleanup;
> }
I think this error message should be dropped. Firstly, this function is
called from esxDomainDefineXMLFlags() where it is used to check if a
domain with the same name as in provided XML does not exist. If it
doesn't this function reports an error which is undesired.
Secondly, every caller checks for virtualMachine == NULL and reports
their own error effectively overwriting this one.
Thirdly, this function is supposed to act like
virDomainObjListFindByName() which doesn't report error either.
ACK with this squashed in:
diff --git i/src/esx/esx_vi.c w/src/esx/esx_vi.c
index 25fbdc7e44..0bdfc5a8be 100644
--- i/src/esx/esx_vi.c
+++ w/src/esx/esx_vi.c
@@ -3014,11 +3014,8 @@ esxVI_LookupVirtualMachineByName(esxVI_Context *ctx, const char
*name,
break;
}
- if (!(*virtualMachine) && occurrence != esxVI_Occurrence_OptionalItem) {
- virReportError(VIR_ERR_NO_DOMAIN,
- _("Could not find domain with name '%s'"),
name);
+ if (!(*virtualMachine) && occurrence != esxVI_Occurrence_OptionalItem)
goto cleanup;
- }
result = 0;
And pushed.
The original patch was fine, your modification is wrong. The error
message needs to stay. You didn't follow the logic closely enough. The
caller of esxVI_LookupVirtualMachineByName specified the expected
occurrence.
esxDomainDefineXMLFlags uses this to test if the domain exists and
calls esxVI_LookupVirtualMachineByName with occurrence OptionalItem.
If the domain is missing no error is reported by
esxVI_LookupVirtualMachineByName, because of occurrence OptionalItem.
esxDomainLookupByName uses this to find a domain with the given name.
It also uses occurrence OptionalItem. Here you argue that the caller
checks for virtualMachine == NULL anyway. But no error is overwritten
here because esxVI_LookupVirtualMachineByName doesn't report an error
with occurrence OptionalItem. The actual point that could be made here
is that esxDomainLookupByName should actually use occurrence
RequiredItem instead of doing the virtualMachine == NULL check itself.
Also esxVI_LookupVirtualMachineByUuid has the same logic that got
simplified in the original patch, but again, the error reporting there
is correct as well and needs to stay.
--
Matthias Bolte
http://photron.blogspot.com