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Diffstat (limited to 'extras/volume_id/lib/via_raid.c')
-rw-r--r--extras/volume_id/lib/via_raid.c75
1 files changed, 75 insertions, 0 deletions
diff --git a/extras/volume_id/lib/via_raid.c b/extras/volume_id/lib/via_raid.c
new file mode 100644
index 0000000000..42cb098065
--- /dev/null
+++ b/extras/volume_id/lib/via_raid.c
@@ -0,0 +1,75 @@
+/*
+ * 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 "libvolume_id.h"
+#include "util.h"
+
+struct via_meta {
+ uint16_t signature;
+ uint8_t version_number;
+ struct via_array {
+ uint16_t disk_bits;
+ uint8_t disk_array_ex;
+ uint32_t capacity_low;
+ uint32_t capacity_high;
+ uint32_t serial_checksum;
+ } PACKED array;
+ uint32_t serial_checksum[8];
+ uint8_t checksum;
+} PACKED;
+
+#define VIA_SIGNATURE 0xAA55
+
+int volume_id_probe_via_raid(struct volume_id *id, uint64_t off, uint64_t size)
+{
+ const uint8_t *buf;
+ uint64_t meta_off;
+ struct via_meta *via;
+
+ 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)-1) * 0x200;
+
+ buf = volume_id_get_buffer(id, off + meta_off, 0x200);
+ if (buf == NULL)
+ return -1;
+
+ via = (struct via_meta *) buf;
+ if (le16_to_cpu(via->signature) != VIA_SIGNATURE)
+ return -1;
+
+ if (via->version_number > 1)
+ return -1;
+
+ volume_id_set_usage(id, VOLUME_ID_RAID);
+ snprintf(id->type_version, sizeof(id->type_version)-1, "%u", via->version_number);
+ id->type = "via_raid_member";
+
+ return 0;
+}