release/src/router/busybox/util-linux/volume_id/unused_silicon_raid.c

   1 /*
   2  * volume_id - reads filesystem label and uuid
   3  *
   4  * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
   5  *
   6  *      This library is free software; you can redistribute it and/or
   7  *      modify it under the terms of the GNU Lesser General Public
   8  *      License as published by the Free Software Foundation; either
   9  *      version 2.1 of the License, or (at your option) any later version.
  10  *
  11  *      This library is distributed in the hope that it will be useful,
  12  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14  *      Lesser General Public License for more details.
  15  *
  16  *      You should have received a copy of the GNU Lesser General Public
  17  *      License along with this library; if not, write to the Free Software
  18  *      Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19  */
  20
  21 #include "volume_id_internal.h"
  22
  23 struct silicon_meta {
  24         uint8_t         unknown0[0x2E];
  25         uint8_t         ascii_version[0x36 - 0x2E];
  26         uint8_t         diskname[0x56 - 0x36];
  27         uint8_t         unknown1[0x60 - 0x56];
  28         uint32_t        magic;
  29         uint32_t        unknown1a[0x6C - 0x64];
  30         uint32_t        array_sectors_low;
  31         uint32_t        array_sectors_high;
  32         uint8_t         unknown2[0x78 - 0x74];
  33         uint32_t        thisdisk_sectors;
  34         uint8_t         unknown3[0x100 - 0x7C];
  35         uint8_t         unknown4[0x104 - 0x100];
  36         uint16_t        product_id;
  37         uint16_t        vendor_id;
  38         uint16_t        minor_ver;
  39         uint16_t        major_ver;
  40 } PACKED;
  41
  42 #define SILICON_MAGIC           0x2F000000
  43
  44 int FAST_FUNC volume_id_probe_silicon_medley_raid(struct volume_id *id, uint64_t off, uint64_t size)
  45 {
  46         uint64_t meta_off;
  47         struct silicon_meta *sil;
  48
  49         dbg("probing at offset 0x%llx, size 0x%llx",
  50             (unsigned long long) off, (unsigned long long) size);
  51
  52         if (size < 0x10000)
  53                 return -1;
  54
  55         meta_off = ((size / 0x200)-1) * 0x200;
  56         sil = volume_id_get_buffer(id, off + meta_off, 0x200);
  57         if (sil == NULL)
  58                 return -1;
  59
  60         if (sil->magic != cpu_to_le32(SILICON_MAGIC))
  61                 return -1;
  62
  63 //      volume_id_set_usage(id, VOLUME_ID_RAID);
  64 //      snprintf(id->type_version, sizeof(id->type_version)-1, "%u.%u",
  65 //               le16_to_cpu(sil->major_ver), le16_to_cpu(sil->minor_ver));
  66 //      id->type = "silicon_medley_raid_member";
  67
  68         return 0;
  69 }