use libblkid to get filesystem type
we can now use libblkid to detect exfat
diff --git a/libblkid/fileutils.h b/libblkid/fileutils.h
new file mode 100644
index 0000000..cf29e1b
--- /dev/null
+++ b/libblkid/fileutils.h
@@ -0,0 +1,23 @@
+#ifndef UTIL_LINUX_FILEUTILS
+#define UTIL_LINUX_FILEUTILS
+
+extern int xmkstemp(char **tmpname, char *dir);
+
+static inline FILE *xfmkstemp(char **tmpname, char *dir)
+{
+ int fd;
+ FILE *ret;
+ fd = xmkstemp(tmpname, dir);
+ if (fd == -1) {
+ return NULL;
+ }
+ if (!(ret = fdopen(fd, "w+"))) {
+ close(fd);
+ return NULL;
+ }
+ return ret;
+}
+
+extern int get_fd_tabsize(void);
+
+#endif /* UTIL_LINUX_FILEUTILS */