util: Add virHostdevIsSCSIDevice()

Add the function virHostdevIsSCSIDevice() which detects whether a
hostdev is a SCSI device or not.
Signed-off-by: NMarc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: NBjoern Walk <bwalk@linux.vnet.ibm.com>
Reviewed-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>

src/libvirt_private.syms

@@ -1677,6 +1677,7 @@ virHookPresent;
 
 # util/virhostdev.h
 virHostdevFindUSBDevice;
+virHostdevIsSCSIDevice;
 virHostdevManagerGetDefault;
 virHostdevPCINodeDeviceDetach;
 virHostdevPCINodeDeviceReAttach;

src/util/virhostdev.c

@@ -337,6 +337,20 @@ virHostdevIsPCINetDevice(virDomainHostdevDefPtr hostdev)
 }
 
 
+/**
+ * virHostdevIsSCSIDevice:
+ * @hostdev: host device to check
+ *
+ * Returns true if @hostdev is a SCSI device, false otherwise.
+ */
+bool
+virHostdevIsSCSIDevice(virDomainHostdevDefPtr hostdev)
+{
+    return hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
+        hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI;
+}
+
+
 static int
 virHostdevNetConfigVirtPortProfile(const char *linkdev, int vf,
                                    virNetDevVPortProfilePtr virtPort,

src/util/virhostdev.h

@@ -149,6 +149,9 @@ virHostdevReAttachDomainDevices(virHostdevManagerPtr mgr,
                                 unsigned int flags,
                                 const char *oldStateDir)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
+bool
+virHostdevIsSCSIDevice(virDomainHostdevDefPtr hostdev)
+    ATTRIBUTE_NONNULL(1);
 
 /* functions used by NodeDevDetach/Reattach/Reset */
 int virHostdevPCINodeDeviceDetach(virHostdevManagerPtr mgr,