use libblkid to get filesystem type
we can now use libblkid to detect exfat
diff --git a/libblkid/cramfs.c b/libblkid/cramfs.c
new file mode 100644
index 0000000..b58ed08
--- /dev/null
+++ b/libblkid/cramfs.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 1999 by Andries Brouwer
+ * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o
+ * Copyright (C) 2001 by Andreas Dilger
+ * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2008 Karel Zak <kzak@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdint.h>
+
+#include "superblocks.h"
+
+struct cramfs_super
+{
+ uint8_t magic[4];
+ uint32_t size;
+ uint32_t flags;
+ uint32_t future;
+ uint8_t signature[16];
+ struct cramfs_info
+ {
+ uint32_t crc;
+ uint32_t edition;
+ uint32_t blocks;
+ uint32_t files;
+ } __attribute__((packed)) info;
+ uint8_t name[16];
+} __attribute__((packed));
+
+static int probe_cramfs(blkid_probe pr, const struct blkid_idmag *mag)
+{
+ struct cramfs_super *cs;
+
+ cs = blkid_probe_get_sb(pr, mag, struct cramfs_super);
+ if (!cs)
+ return -1;
+
+ blkid_probe_set_label(pr, cs->name, sizeof(cs->name));
+ return 0;
+}
+
+const struct blkid_idinfo cramfs_idinfo =
+{
+ .name = "cramfs",
+ .usage = BLKID_USAGE_FILESYSTEM,
+ .probefunc = probe_cramfs,
+ .magics =
+ {
+ { "\x45\x3d\xcd\x28", 4, 0, 0 },
+ { "\x28\xcd\x3d\x45", 4, 0, 0 },
+ { NULL }
+ }
+};
+
+