[libvirt] [PATCH v2] pci: Give an explicit error if device not found
Cole Robinson
crobinso at redhat.com
Mon May 17 18:25:37 UTC 2010
On 05/17/2010 01:16 PM, Daniel P. Berrange wrote:
> On Mon, May 17, 2010 at 01:06:23PM -0400, Cole Robinson wrote:
>> v2: Use intended F_OK. Drop devdir param, just check dev->path for device
>> existence.
>>
>> Signed-off-by: Cole Robinson <crobinso at redhat.com>
>> ---
>> src/util/pci.c | 7 +++++++
>> 1 files changed, 7 insertions(+), 0 deletions(-)
>>
>> diff --git a/src/util/pci.c b/src/util/pci.c
>> index 81193b7..3fcc658 100644
>> --- a/src/util/pci.c
>> +++ b/src/util/pci.c
>> @@ -1046,6 +1046,13 @@ pciGetDevice(unsigned domain,
>> snprintf(dev->path, sizeof(dev->path),
>> PCI_SYSFS "devices/%s/config", dev->name);
>>
>> + if (access(dev->path, F_OK) != 0) {
>> + pciReportError(VIR_ERR_INTERNAL_ERROR,
>> + _("Device %s not found"), dev->name);
>
> This should do
>
> virReportSystemError(errno,
> _("unable to access PCI device %s at %s"),
> dev->name, dev->path)
>
> so that it lets us see the different types of problem access()
> can return & reminds us what path we're complaining about.
>
Thanks, sent an updated patch. I kept 'device not found' as part of the
error message, since that is likely to be what a failed access really means.
- Cole
>> + pciFreeDevice(dev);
>> + return NULL;
>> + }
>> +
>> vendor = pciReadDeviceID(dev, "vendor");
>> product = pciReadDeviceID(dev, "device");
>>
>
> Daniel
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