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
new file mode 100644
index 000000000..a9bd5b7b9
--- /dev/null
+++ 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;
+}