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Diffstat (limited to 'util-linux/volume_id/via_raid.c')
-rw-r--r--util-linux/volume_id/via_raid.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/util-linux/volume_id/via_raid.c b/util-linux/volume_id/via_raid.c
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+++ b/util-linux/volume_id/via_raid.c
@@ -0,0 +1,68 @@
+/*
+ * volume_id - reads filesystem label and uuid
+ *
+ * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "volume_id_internal.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;
+ } __attribute((packed)) array;
+ uint32_t serial_checksum[8];
+ uint8_t checksum;
+} __attribute__((packed));
+
+#define VIA_SIGNATURE 0xAA55
+
+int volume_id_probe_via_raid(struct volume_id *id, uint64_t off, uint64_t size)
+{
+ 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;
+
+ via = volume_id_get_buffer(id, off + meta_off, 0x200);
+ if (via == NULL)
+ return -1;
+
+ if (via->signature != cpu_to_le16(VIA_SIGNATURE))
+ return -1;
+
+ if (via->version_number > 1)
+ return -1;
+
+ volume_id_set_usage(id, VOLUME_ID_RAID);
+ id->type_version[0] = '0' + via->version_number;
+ id->type_version[1] = '\0';
+ id->type = "via_raid_member";
+
+ return 0;
+}