1 files changed, 70 insertions, 0 deletions
diff --git a/extras/volume_id/lib/promise_raid.c b/extras/volume_id/lib/promise_raid.c
new file mode 100644
index 0000000000..2a2ce1689e
--- /dev/null
+++ b/extras/volume_id/lib/promise_raid.c
@@ -0,0 +1,70 @@
+/*
+ * 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 promise_meta {
+	uint8_t	sig[24];
+} PACKED;
+
+#define PDC_CONFIG_OFF		0x1200
+#define PDC_SIGNATURE		"Promise Technology, Inc."
+
+int volume_id_probe_promise_fasttrack_raid(struct volume_id *id, uint64_t off, uint64_t size)
+{
+	const uint8_t *buf;
+	struct promise_meta *pdc;
+	unsigned int i;
+	static unsigned int sectors[] = {
+		63, 255, 256, 16, 399, 0
+	};
+
+	dbg("probing at offset 0x%llx, size 0x%llx",
+	    (unsigned long long) off, (unsigned long long) size);
+
+	if (size < 0x40000)
+		return -1;
+
+	for (i = 0; sectors[i] != 0; i++) {
+		uint64_t meta_off;
+
+		meta_off = ((size / 0x200) - sectors[i]) * 0x200;
+		buf = volume_id_get_buffer(id, off + meta_off, 0x200);
+		if (buf == NULL)
+			return -1;
+
+		pdc = (struct promise_meta *) buf;
+		if (memcmp(pdc->sig, PDC_SIGNATURE, sizeof(PDC_SIGNATURE)-1) == 0)
+			goto found;
+	}
+	return -1;
+
+found:
+	volume_id_set_usage(id, VOLUME_ID_RAID);
+	id->type = "promise_fasttrack_raid_member";
+
+	return 0;
+}