use libblkid to get filesystem type
we can now use libblkid to detect exfat
diff --git a/libblkid/closestream.h b/libblkid/closestream.h
new file mode 100644
index 0000000..d61b83b
--- /dev/null
+++ b/libblkid/closestream.h
@@ -0,0 +1,51 @@
+#ifndef UTIL_LINUX_CLOSESTREAM_H
+#define UTIL_LINUX_CLOSESTREAM_H
+
+#include <stdio.h>
+#ifdef HAVE_STDIO_EXT_H
+#include <stdio_ext.h>
+#endif
+#include <unistd.h>
+
+#include "c.h"
+#include "nls.h"
+
+#ifndef HAVE___FPENDING
+static inline int
+__fpending(FILE *stream __attribute__((__unused__)))
+{
+ return 0;
+}
+#endif
+
+static inline int
+close_stream(FILE * stream)
+{
+ const int some_pending = (__fpending(stream) != 0);
+ const int prev_fail = (ferror(stream) != 0);
+ const int fclose_fail = (fclose(stream) != 0);
+ if (prev_fail || (fclose_fail && (some_pending || errno != EBADF))) {
+ if (!fclose_fail)
+ errno = 0;
+ return EOF;
+ }
+ return 0;
+}
+
+/* Meant to be used atexit(close_stdout); */
+static inline void
+close_stdout(void)
+{
+ if (close_stream(stdout) != 0 && !(errno == EPIPE)) {
+ if (errno)
+ warn(_("write error"));
+ else
+ warnx(_("write error"));
+ _exit(EXIT_FAILURE);
+ }
+
+ if (close_stream(stderr) != 0)
+ _exit(EXIT_FAILURE);
+}
+
+#endif /* UTIL_LINUX_CLOSESTREAM_H */