From 378c18e5f024ac5a8aef4cb40d7c9aa9633d144c Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 16:30:35 +0200
Subject: Adding upstream version 2.38.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 libblkid/src/superblocks/promise_raid.c | 77 +++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 libblkid/src/superblocks/promise_raid.c

(limited to 'libblkid/src/superblocks/promise_raid.c')

diff --git a/libblkid/src/superblocks/promise_raid.c b/libblkid/src/superblocks/promise_raid.c
new file mode 100644
index 0000000..75f3a20
--- /dev/null
+++ b/libblkid/src/superblocks/promise_raid.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2008 Karel Zak <kzak@redhat.com>
+ *
+ * Inspired by libvolume_id by
+ *     Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+#include <stdint.h>
+
+#include "superblocks.h"
+
+struct promise_metadata {
+	uint8_t	sig[24];
+};
+
+#define PDC_CONFIG_OFF		0x1200
+#define PDC_SIGNATURE		"Promise Technology, Inc."
+
+static int probe_pdcraid(blkid_probe pr,
+		const struct blkid_idmag *mag __attribute__((__unused__)))
+{
+	size_t i;
+	static unsigned int sectors[] = {
+	  63, 255, 256, 16, 399, 591, 675, 735, 911, 974, 991, 951, 3087
+	};
+	uint64_t nsectors;
+
+	if (pr->size < 0x40000)
+		return 1;
+	if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr))
+		return 1;
+
+	nsectors = pr->size >> 9;
+
+	for (i = 0; i < ARRAY_SIZE(sectors); i++) {
+		uint64_t off;
+		struct promise_metadata *pdc;
+
+		if (nsectors < sectors[i])
+			return 1;
+
+		off = (nsectors - sectors[i]) << 9;
+		pdc = (struct promise_metadata *)
+				blkid_probe_get_buffer(pr,
+					off,
+					sizeof(struct promise_metadata));
+		if (!pdc)
+			return errno ? -errno : 1;
+
+		if (memcmp(pdc->sig, PDC_SIGNATURE,
+				sizeof(PDC_SIGNATURE) - 1) == 0) {
+
+			if (blkid_probe_set_magic(pr, off, sizeof(pdc->sig),
+						(unsigned char *) pdc->sig))
+				return 1;
+			return 0;
+		}
+	}
+	return 1;
+}
+
+const struct blkid_idinfo pdcraid_idinfo = {
+	.name		= "promise_fasttrack_raid_member",
+	.usage		= BLKID_USAGE_RAID,
+	.probefunc	= probe_pdcraid,
+	.magics		= BLKID_NONE_MAGIC
+};
+
+
-- 
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