extras/volume_id/lib/netware.c

   1 /*
   2  * volume_id - reads filesystem label and uuid
   3  *
   4  * Copyright (C) 2006 Kay Sievers <kay.sievers@vrfy.org>
   5  *
   6  *      This program is free software; you can redistribute it and/or modify it
   7  *      under the terms of the GNU General Public License as published by the
   8  *      Free Software Foundation version 2 of the License.
   9  */
  10
  11 #ifndef _GNU_SOURCE
  12 #define _GNU_SOURCE 1
  13 #endif
  14
  15 #ifdef HAVE_CONFIG_H
  16 #  include <config.h>
  17 #endif
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <unistd.h>
  22 #include <string.h>
  23 #include <errno.h>
  24 #include <ctype.h>
  25
  26 #include "libvolume_id.h"
  27 #include "libvolume_id-private.h"
  28 #include "util.h"
  29
  30 #define NW_SUPERBLOCK_OFFSET                    0x1000
  31
  32 struct netware_super_block {
  33         uint8_t         SBH_Signature[4];
  34         uint16_t        SBH_VersionMajor;
  35         uint16_t        SBH_VersionMinor;
  36         uint16_t        SBH_VersionMediaMajor;
  37         uint16_t        SBH_VersionMediaMinor;
  38         uint32_t        SBH_ItemsMoved;
  39         uint8_t         SBH_InternalID[16];
  40         uint32_t        SBH_PackedSize;
  41         uint32_t        SBH_Checksum;
  42         uint32_t        supersyncid;
  43         int64_t         superlocation[4];
  44         uint32_t        physSizeUsed;
  45         uint32_t        sizeUsed;
  46         uint32_t        superTimeStamp;
  47         uint32_t        reserved0[1];
  48         int64_t         SBH_LoggedPoolDataBlk;
  49         int64_t         SBH_PoolDataBlk;
  50         uint8_t         SBH_OldInternalID[16];
  51         uint32_t        SBH_PoolToLVStartUTC;
  52         uint32_t        SBH_PoolToLVEndUTC;
  53         uint16_t        SBH_VersionMediaMajorCreate;
  54         uint16_t        SBH_VersionMediaMinorCreate;
  55         uint32_t        SBH_BlocksMoved;
  56         uint32_t        SBH_TempBTSpBlk;
  57         uint32_t        SBH_TempFTSpBlk;
  58         uint32_t        SBH_TempFTSpBlk1;
  59         uint32_t        SBH_TempFTSpBlk2;
  60         uint32_t        nssMagicNumber;
  61         uint32_t        poolClassID;
  62         uint32_t        poolID;
  63         uint32_t        createTime;
  64         int64_t         SBH_LoggedVolumeDataBlk;
  65         int64_t         SBH_VolumeDataBlk;
  66         int64_t         SBH_SystemBeastBlkNum;
  67         uint64_t        totalblocks;
  68         uint16_t        SBH_Name[64];
  69         uint8_t         SBH_VolumeID[16];
  70         uint8_t         SBH_PoolID[16];
  71         uint8_t         SBH_PoolInternalID[16];
  72         uint64_t        SBH_Lsn;
  73         uint32_t        SBH_SS_Enabled;
  74         uint32_t        SBH_SS_CreateTime;
  75         uint8_t         SBH_SS_OriginalPoolID[16];
  76         uint8_t         SBH_SS_OriginalVolumeID[16];
  77         uint8_t         SBH_SS_Guid[16];
  78         uint16_t        SBH_SS_OriginalName[64];
  79         uint32_t        reserved2[64-(2+46)];
  80 } PACKED;
  81
  82 int volume_id_probe_netware(struct volume_id *id, uint64_t off, uint64_t size)
  83 {
  84         struct netware_super_block *nw;
  85
  86         info("probing at offset 0x%llx\n", (unsigned long long) off);
  87
  88         nw = (struct netware_super_block *) volume_id_get_buffer(id, off + NW_SUPERBLOCK_OFFSET, 0x200);
  89         if (nw == NULL)
  90                 return -1;
  91
  92         if (memcmp(nw->SBH_Signature, "SPB5", 4) != 0)
  93                 return -1;
  94
  95         volume_id_set_uuid(id, nw->SBH_PoolID, 0, UUID_DCE);
  96
  97         snprintf(id->type_version, sizeof(id->type_version)-1, "%u.%02u",
  98                  le16_to_cpu(nw->SBH_VersionMediaMajor), le16_to_cpu(nw->SBH_VersionMediaMinor));
  99
 100         volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
 101         id->type = "nss";
 102
 103         return 0;
 104 }