util: new function virPCIDeviceGetConfigPath()

The path to the config file for a PCI device is conventiently stored
in a virPCIDevice object, but that object's contents aren't directly
visible outside of virpci.c, so we need to have an accessor function
for it if anyone needs to look at it.

src/libvirt_private.syms

@@ -2138,6 +2138,7 @@ virPCIDeviceCopy;
 virPCIDeviceDetach;
 virPCIDeviceFileIterate;
 virPCIDeviceFree;
+virPCIDeviceGetConfigPath;
 virPCIDeviceGetDriverPathAndName;
 virPCIDeviceGetIOMMUGroupDev;
 virPCIDeviceGetIOMMUGroupList;

src/util/virpci.c

@@ -1848,6 +1848,18 @@ virPCIDeviceGetName(virPCIDevicePtr dev)
     return dev->name;
 }
 
+/**
+ * virPCIDeviceGetConfigPath:
+ *
+ * Returns a pointer to a string containing the path of @dev's PCI
+ * config file.
+ */
+const char *
+virPCIDeviceGetConfigPath(virPCIDevicePtr dev)
+{
+    return dev->path;
+}
+
 void virPCIDeviceSetManaged(virPCIDevicePtr dev, bool managed)
 {
     dev->managed = managed;

src/util/virpci.h

@@ -97,6 +97,7 @@ virPCIDevicePtr virPCIDeviceNew(unsigned int domain,
 virPCIDevicePtr virPCIDeviceCopy(virPCIDevicePtr dev);
 void virPCIDeviceFree(virPCIDevicePtr dev);
 const char *virPCIDeviceGetName(virPCIDevicePtr dev);
+const char *virPCIDeviceGetConfigPath(virPCIDevicePtr dev);
 
 int virPCIDeviceDetach(virPCIDevicePtr dev,
                        virPCIDeviceListPtr activeDevs,