/*
* volume_id - reads filesystem label and uuid
*
- * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2007 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.
+ * 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, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#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 <byteswap.h>
#include "libvolume_id.h"
-#include "util.h"
+#include "libvolume_id-private.h"
+
+/* http://www.snia.org/standards/home */
-#define DDF_HEADER 0xDE11DE11
#define DDF_GUID_LENGTH 24
#define DDF_REV_LENGTH 8
-static struct ddf_header {
- uint32_t signature;
+struct ddf_header {
+ uint8_t signature[4];
uint32_t crc;
uint8_t guid[DDF_GUID_LENGTH];
uint8_t ddf_rev[DDF_REV_LENGTH];
-} PACKED *ddf;
+} PACKED;
int volume_id_probe_ddf_raid(struct volume_id *id, uint64_t off, uint64_t size)
{
- uint64_t ddf_off = ((size / 0x200)-1) * 0x200;
+ uint64_t ddf_off;
const uint8_t *buf;
+ struct ddf_header *ddf;
- info("probing at offset 0x%llx, size 0x%llx",
- (unsigned long long) off, (unsigned long long) size);
- if (size < 0x10000)
+ info("probing at offset 0x%" PRIx64 ", size 0x%" PRIx64 "\n", off, size);
+ if (size < 0x30000)
return -1;
+ /* header at last sector */
+ ddf_off = ((size / 0x200)-1) * 0x200;
buf = volume_id_get_buffer(id, off + ddf_off, 0x200);
if (buf == NULL)
return -1;
ddf = (struct ddf_header *) buf;
+ if (memcmp(ddf->signature, "\x11\xde\x11\xde", 4) == 0) {
+ info("header (little endian) found at %" PRIu64 "\n", (off + ddf_off));
+ goto found;
+ }
+ if (memcmp(ddf->signature, "\xde\x11\xde\x11", 4) == 0) {
+ info("header (big endian) found at %" PRIu64 "\n", (off + ddf_off));
+ goto found;
+ }
- if (ddf->signature != cpu_to_be32(DDF_HEADER))
+ /* adaptec non-standard header location */
+ ddf_off = ((size / 0x200)-257) * 0x200;
+ buf = volume_id_get_buffer(id, off + ddf_off, 0x200);
+ if (buf == NULL)
return -1;
+ ddf = (struct ddf_header *) buf;
+ if (memcmp(ddf->signature, "\x11\xde\x11\xde", 4) == 0) {
+ info("header adaptec (little endian) found at %" PRIu64 "\n", (off + ddf_off));
+ goto found;
+ }
+ if (memcmp(ddf->signature, "\xde\x11\xde\x11", 4) == 0) {
+ info("header adaptec (big endian) found at %" PRIu64 "\n", (off + ddf_off));
+ goto found;
+ }
+ return -1;
+found:
volume_id_set_uuid(id, ddf->guid, DDF_GUID_LENGTH, UUID_STRING);
snprintf(id->type_version, DDF_REV_LENGTH, "%s", ddf->ddf_rev);
volume_id_set_usage(id, VOLUME_ID_RAID);