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Sourcecode: udev version File versions

highpoint.c

/*
 * volume_id - reads filesystem label and uuid
 *
 * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation; either
 *    version 2.1 of the License, or (at your option) any later version.
 *
 *    This library 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
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#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 <asm/types.h>

#include "volume_id.h"
#include "logging.h"
#include "util.h"
#include "highpoint.h"

struct hpt37x_meta {
      __u8  filler1[32];
      __u32 magic;
} __attribute__((packed));

struct hpt45x_meta {
      __u32 magic;
} __attribute__((packed));

#define HPT37X_CONFIG_OFF           0x1200
#define HPT37X_MAGIC_OK             0x5a7816f0
#define HPT37X_MAGIC_BAD            0x5a7816fd

#define HPT45X_MAGIC_OK             0x5a7816f3
#define HPT45X_MAGIC_BAD            0x5a7816fd


int volume_id_probe_highpoint_37x_raid(struct volume_id *id, __u64 off)
{
      const __u8 *buf;
      struct hpt37x_meta *hpt;
      __u32 magic;

      dbg("probing at offset 0x%llx", (unsigned long long) off);

      buf = volume_id_get_buffer(id, off + HPT37X_CONFIG_OFF, 0x200);
      if (buf == NULL)
            return -1;

      hpt = (struct hpt37x_meta *) buf;
      magic = le32_to_cpu(hpt->magic);
      if (magic != HPT37X_MAGIC_OK && magic != HPT37X_MAGIC_BAD)
            return -1;

      volume_id_set_usage(id, VOLUME_ID_RAID);
      id->type = "highpoint_raid_member";

      return 0;
}

int volume_id_probe_highpoint_45x_raid(struct volume_id *id, __u64 off, __u64 size)
{
      const __u8 *buf;
      struct hpt45x_meta *hpt;
      __u64 meta_off;
      __u32 magic;

      dbg("probing at offset 0x%llx, size 0x%llx",
          (unsigned long long) off, (unsigned long long) size);

      if (size < 0x10000)
            return -1;

      meta_off = ((size / 0x200)-11) * 0x200;
      buf = volume_id_get_buffer(id, off + meta_off, 0x200);
      if (buf == NULL)
            return -1;

      hpt = (struct hpt45x_meta *) buf;
      magic = le32_to_cpu(hpt->magic);
      if (magic != HPT45X_MAGIC_OK && magic != HPT45X_MAGIC_BAD)
            return -1;

      volume_id_set_usage(id, VOLUME_ID_RAID);
      id->type = "highpoint_raid_member";

      return 0;
}

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