[libvirt] [PATCH] pci: Give an explicit error if device not found
Signed-off-by: Cole Robinson <crobinso(a)redhat.com>
---
src/util/pci.c | 12 +++++++++++-
1 files changed, 11 insertions(+), 1 deletions(-)
diff --git a/src/util/pci.c b/src/util/pci.c
index 81193b7..e1e11bc 100644
--- a/src/util/pci.c
+++ b/src/util/pci.c
@@ -1028,6 +1028,7 @@ pciGetDevice(unsigned domain,
unsigned function)
{
pciDevice *dev;
+ char devdir[PATH_MAX];
char *vendor, *product;
if (VIR_ALLOC(dev) < 0) {
@@ -1043,8 +1044,17 @@ pciGetDevice(unsigned domain,
snprintf(dev->name, sizeof(dev->name), "%.4x:%.2x:%.2x.%.1x",
dev->domain, dev->bus, dev->slot, dev->function);
+ snprintf(devdir, sizeof(devdir),
+ PCI_SYSFS "devices/%s", dev->name);
snprintf(dev->path, sizeof(dev->path),
- PCI_SYSFS "devices/%s/config", dev->name);
+ "%s/%s/config", devdir, dev->name);
+
+ if (access(devdir, X_OK) != 0) {
+ pciReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Device %s not found"), dev->name);
+ pciFreeDevice(dev);
+ return NULL;
+ }
vendor = pciReadDeviceID(dev, "vendor");
product = pciReadDeviceID(dev, "device");
--
1.7.0.1