+
+/* Perform device name translation. Don't call this directly -
+ * use the IS_DEVICE macro.
+ *
+ * See guestfs(3) for the algorithm.
+ */
+int
+device_name_translation (char *device, const char *func)
+{
+ struct stat statbuf;
+
+ if (stat (device, &statbuf) == -1) {
+ /* If the name begins with "/dev/sd" then try the alternatives. */
+ if (strncmp (device, "/dev/sd", 7) != 0)
+ goto error;
+
+ device[5] = 'h'; /* /dev/hd (old IDE driver) */
+ if (stat (device, &statbuf) == 0)
+ return 0;
+
+ device[5] = 'v'; /* /dev/vd (for virtio devices) */
+ if (stat (device, &statbuf) == 0)
+ return 0;
+
+ device[5] = 's'; /* Restore original device name. */
+
+ error:
+ reply_with_perror ("%s: %s", func, device);
+ return -1;
+ }
+ return 0;
+}