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/*
* 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, 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
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include "libvolume_id.h"
#include "libvolume_id-private.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
};
info("probing at offset 0x%" PRIx64 ", size 0x%" PRIx64 "\n", off, 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;
}
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