From 8cb83eee5a58b1fad74c34094ce3afb9e430b5a4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Mon, 6 May 2024 04:42:50 +0200
Subject: Adding upstream version 2.33.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 libblkid/src/superblocks/via_raid.c | 91 +++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 libblkid/src/superblocks/via_raid.c

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

diff --git a/libblkid/src/superblocks/via_raid.c b/libblkid/src/superblocks/via_raid.c
new file mode 100644
index 0000000..ee3ab65
--- /dev/null
+++ b/libblkid/src/superblocks/via_raid.c
@@ -0,0 +1,91 @@
+/*
+ * 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 via_metadata {
+	uint16_t	signature;
+	uint8_t		version_number;
+	struct via_array {
+		uint16_t	disk_bit_mask;
+		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
+
+/* 8 bit checksum on first 50 bytes of metadata. */
+static uint8_t via_checksum(struct via_metadata *v)
+{
+	uint8_t i = 50, cs = 0;
+
+	while (i--)
+		cs += ((uint8_t*) v)[i];
+
+	return cs;
+}
+
+static int probe_viaraid(blkid_probe pr,
+		const struct blkid_idmag *mag __attribute__((__unused__)))
+{
+	uint64_t off;
+	struct via_metadata *v;
+
+	if (pr->size < 0x10000)
+		return 1;
+	if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr))
+		return 1;
+
+	off = ((pr->size / 0x200)-1) * 0x200;
+
+	v = (struct via_metadata *)
+			blkid_probe_get_buffer(pr,
+				off,
+				sizeof(struct via_metadata));
+	if (!v)
+		return errno ? -errno : 1;
+
+	if (le16_to_cpu(v->signature) != VIA_SIGNATURE)
+		return 1;
+	if (v->version_number > 2)
+		return 1;
+	if (!blkid_probe_verify_csum(pr, via_checksum(v), v->checksum))
+		return 1;
+
+	if (blkid_probe_sprintf_version(pr, "%u", v->version_number) != 0)
+		return 1;
+	if (blkid_probe_set_magic(pr, off,
+				sizeof(v->signature),
+				(unsigned char *) &v->signature))
+		return 1;
+	return 0;
+}
+
+const struct blkid_idinfo viaraid_idinfo = {
+	.name		= "via_raid_member",
+	.usage		= BLKID_USAGE_RAID,
+	.probefunc	= probe_viaraid,
+	.magics		= BLKID_NONE_MAGIC
+};
+
+
-- 
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