1 files changed, 78 insertions, 0 deletions
diff --git a/libblkid/src/superblocks/nvidia_raid.c b/libblkid/src/superblocks/nvidia_raid.c
new file mode 100644
index 0000000..d930f72
--- /dev/null
+++ b/libblkid/src/superblocks/nvidia_raid.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2008 Karel Zak <kzak@redhat.com>
+ * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * 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 "superblocks.h"
+
+struct nv_metadata {
+	uint8_t		vendor[8];
+	uint32_t	size;
+	uint32_t	chksum;
+	uint16_t	version;
+} __attribute__((packed));
+
+#define NVIDIA_SIGNATURE		"NVIDIA  "
+#define NVIDIA_SUPERBLOCK_SIZE		120
+
+
+static int nvraid_verify_checksum(blkid_probe pr, const struct nv_metadata *nv)
+{
+	uint32_t csum = le32_to_cpu(nv->chksum);
+	for (size_t i = 0; i < le32_to_cpu(nv->size); i++)
+		csum += le32_to_cpu(((uint32_t *) nv)[i]);
+	return blkid_probe_verify_csum(pr, csum, le32_to_cpu(nv->chksum));
+}
+
+static int probe_nvraid(blkid_probe pr,
+		const struct blkid_idmag *mag __attribute__((__unused__)))
+{
+	uint64_t off;
+	struct nv_metadata *nv;
+
+	if (pr->size < 0x10000)
+		return 1;
+	if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr))
+		return 1;
+
+	off = ((pr->size / 0x200) - 2) * 0x200;
+	nv = (struct nv_metadata *)
+		blkid_probe_get_buffer(pr,
+				off,
+				NVIDIA_SUPERBLOCK_SIZE);
+	if (!nv)
+		return errno ? -errno : 1;
+
+	if (memcmp(nv->vendor, NVIDIA_SIGNATURE, sizeof(NVIDIA_SIGNATURE)-1) != 0)
+		return 1;
+	if (le32_to_cpu(nv->size) * 4 != NVIDIA_SUPERBLOCK_SIZE)
+		return 1;
+	if (!nvraid_verify_checksum(pr, nv))
+		return 1;
+	if (blkid_probe_sprintf_version(pr, "%u", le16_to_cpu(nv->version)) != 0)
+		return 1;
+	if (blkid_probe_set_magic(pr, off, sizeof(nv->vendor),
+				(unsigned char *) nv->vendor))
+		return 1;
+	return 0;
+}
+
+const struct blkid_idinfo nvraid_idinfo = {
+	.name		= "nvidia_raid_member",
+	.usage		= BLKID_USAGE_RAID,
+	.probefunc	= probe_nvraid,
+	.magics		= BLKID_NONE_MAGIC
+};
+
+