+static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
+{
+ off_t size;
+
+ if (!ioctl(f->fd, DIOCGMEDIASIZE, &size)) {
+ *bytes = size;
+ return 0;
+ }
+
+ *bytes = 0;
+ return errno;
+}
+
+static inline int chardev_size(struct fio_file *f, unsigned long long *bytes)
+{
+ return blockdev_size(f, bytes);
+}
+
+static inline int blockdev_invalidate_cache(struct fio_file *f)