volume_id: provide libvolume_id.a file

Signed-off-by: Kay Sievers <kay.sievers@suse.de>

1 files changed, 65 insertions, 0 deletions

diff --git a/extras/volume_id/libvolume_id/nvidia_raid.c b/extras/volume_id/libvolume_id/nvidia_raid.c
new file mode 100644
index 0000000000..3b967e6979
--- /dev/null
+++ b/extras/volume_id/libvolume_id/nvidia_raid.c
@@ -0,0 +1,65 @@
+/*
+ * volume_id - reads filesystem label and uuid
+ *
+ * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ *	This program is free software; you can redistribute it and/or modify it
+ *	under the terms of the GNU General Public License as published by the
+ *	Free Software Foundation version 2 of the License.
+ */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+
+#include "volume_id.h"
+#include "logging.h"
+#include "util.h"
+
+struct nvidia_meta {
+	uint8_t		vendor[8];
+	uint32_t	size;
+	uint32_t	chksum;
+	uint16_t	version;
+} __attribute__((packed));
+
+#define NVIDIA_SIGNATURE		"NVIDIA"
+
+int volume_id_probe_nvidia_raid(struct volume_id *id, uint64_t off, uint64_t size)
+{
+	const uint8_t *buf;
+	uint64_t meta_off;
+	struct nvidia_meta *nv;
+
+	dbg("probing at offset 0x%llx, size 0x%llx",
+	    (unsigned long long) off, (unsigned long long) size);
+
+	if (size < 0x10000)
+		return -1;
+
+	meta_off = ((size / 0x200)-2) * 0x200;
+	buf = volume_id_get_buffer(id, off + meta_off, 0x200);
+	if (buf == NULL)
+		return -1;
+
+	nv = (struct nvidia_meta *) buf;
+	if (memcmp(nv->vendor, NVIDIA_SIGNATURE, sizeof(NVIDIA_SIGNATURE)-1) != 0)
+		return -1;
+
+	volume_id_set_usage(id, VOLUME_ID_RAID);
+	snprintf(id->type_version, sizeof(id->type_version)-1, "%u", le16_to_cpu(nv->version));
+	id->type = "nvidia_raid_member";
+
+	return 0;
+}