libblkid-tiny: add support for UBI superblock

[project/fstools.git] / libblkid-tiny / ubi.c

diff --git a/libblkid-tiny/ubi.c b/libblkid-tiny/ubi.c
new file mode 100644 (file)
index 0000000..0739c32
--- /dev/null
+++ b/libblkid-tiny/ubi.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2017 Rafał Miłecki <rafal@milecki.pl>
+ *
+ * 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 ubi_ec_hdr {
+       uint32_t        magic;
+       uint8_t         version;
+       uint8_t         padding1[3];
+       uint64_t        ec;
+       uint32_t        vid_hdr_offset;
+       uint32_t        data_offset;
+       uint32_t        image_seq;
+       uint8_t         padding2[32];
+       uint32_t        hdr_crc;
+} __attribute__((packed));
+
+static int probe_ubi(blkid_probe pr, const struct blkid_idmag *mag)
+{
+       struct ubi_ec_hdr *hdr;
+
+       hdr = blkid_probe_get_sb(pr, mag, struct ubi_ec_hdr);
+       if (!hdr)
+               return -1;
+
+       blkid_probe_sprintf_version(pr, "%u", hdr->version);
+       blkid_probe_sprintf_uuid(pr, (unsigned char *)&hdr->image_seq, 4, "%u",
+                                be32_to_cpu(hdr->image_seq));
+       return 0;
+}
+
+const struct blkid_idinfo ubi_idinfo =
+{
+       .name           = "ubi",
+       .usage          = BLKID_USAGE_RAID,
+       .probefunc      = probe_ubi,
+       .magics         =
+       {
+               { .magic = "UBI#", .len = 4 },
+               { NULL }
+       }
+};