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util-linux/libblkid/src/superblocks/highpoint_raid.c

87 lines
2.0 KiB

/*
* 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 <stdint.h>
#include "superblocks.h"
struct hpt45x_metadata {
uint32_t magic;
};
#define HPT45X_MAGIC_OK 0x5a7816f3
#define HPT45X_MAGIC_BAD 0x5a7816fd
static int probe_highpoint45x(blkid_probe pr,
const struct blkid_idmag *mag __attribute__((__unused__)))
{
struct hpt45x_metadata *hpt;
uint64_t off;
uint32_t magic;
if (pr->size < 0x10000)
return 1;
if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr))
return 1;
off = ((pr->size / 0x200) - 11) * 0x200;
hpt = (struct hpt45x_metadata *)
blkid_probe_get_buffer(pr,
off,
sizeof(struct hpt45x_metadata));
if (!hpt)
return errno ? -errno : 1;
magic = le32_to_cpu(hpt->magic);
if (magic != HPT45X_MAGIC_OK && magic != HPT45X_MAGIC_BAD)
return 1;
if (blkid_probe_set_magic(pr, off, sizeof(hpt->magic),
(unsigned char *) &hpt->magic))
return 1;
return 0;
}
static int probe_highpoint37x(blkid_probe pr,
const struct blkid_idmag *mag __attribute__((__unused__)))
{
if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr))
return 1;
return 0;
}
const struct blkid_idinfo highpoint45x_idinfo = {
.name = "hpt45x_raid_member",
.usage = BLKID_USAGE_RAID,
.probefunc = probe_highpoint45x,
.magics = BLKID_NONE_MAGIC
};
const struct blkid_idinfo highpoint37x_idinfo = {
.name = "hpt37x_raid_member",
.usage = BLKID_USAGE_RAID,
.probefunc = probe_highpoint37x,
.magics = {
/*
* Superblock offset: 4608 bytes (9 sectors)
* Magic string offset within superblock: 32 bytes
*
* kboff = (4608 + 32) / 1024
* sboff = (4608 + 32) % kboff
*/
{ .magic = "\xf0\x16\x78\x5a", .len = 4, .kboff = 4, .sboff = 544 },
{ .magic = "\xfd\x16\x78\x5a", .len = 4, .kboff = 4, .sboff = 544 },
{ NULL }
}
};