use libblkid to get filesystem type
we can now use libblkid to detect exfat
diff --git a/libblkid/squashfs.c b/libblkid/squashfs.c
new file mode 100644
index 0000000..45f1029
--- /dev/null
+++ b/libblkid/squashfs.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2008 Karel Zak <kzak@redhat.com>
+ *
+ * Inspired by libvolume_id by
+ * Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * 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 "bitops.h" /* swab16() */
+#include "superblocks.h"
+
+struct sqsh_super_block {
+ uint32_t s_magic;
+ uint32_t inodes;
+ uint32_t bytes_used_2;
+ uint32_t uid_start_2;
+ uint32_t guid_start_2;
+ uint32_t inode_table_start_2;
+ uint32_t directory_table_start_2;
+ uint16_t s_major;
+ uint16_t s_minor;
+} __attribute__((packed));
+
+static int probe_squashfs(blkid_probe pr, const struct blkid_idmag *mag)
+{
+ struct sqsh_super_block *sq;
+
+ sq = blkid_probe_get_sb(pr, mag, struct sqsh_super_block);
+ if (!sq)
+ return -1;
+
+ if (strcmp(mag->magic, "sqsh") == 0 ||
+ strcmp(mag->magic, "qshs") == 0)
+ blkid_probe_sprintf_version(pr, "%u.%u",
+ sq->s_major,
+ sq->s_minor);
+ else
+ blkid_probe_sprintf_version(pr, "%u.%u",
+ swab16(sq->s_major),
+ swab16(sq->s_minor));
+ return 0;
+}
+
+const struct blkid_idinfo squashfs_idinfo =
+{
+ .name = "squashfs",
+ .usage = BLKID_USAGE_FILESYSTEM,
+ .probefunc = probe_squashfs,
+ .magics =
+ {
+ { .magic = "sqsh", .len = 4 },
+ { .magic = "hsqs", .len = 4 }, /* swap */
+
+ /* LZMA version */
+ { .magic = "qshs", .len = 4 },
+ { .magic = "shsq", .len = 4 }, /* swap */
+ { NULL }
+ }
+};
+
+