mirror of
https://github.com/systemd/systemd.git
synced 2024-11-05 15:21:37 +03:00
71 lines
1.5 KiB
C
71 lines
1.5 KiB
C
/*
|
|
* 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
|
|
};
|
|
|
|
info("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;
|
|
}
|