util-linux/volume_id/unused_ufs.c

   1 /*
   2  * volume_id - reads filesystem label and uuid
   3  *
   4  * Copyright (C) 2004 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 //kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_UFS) += ufs.o
  22
  23 //config:
  24 //config:### config FEATURE_VOLUMEID_UFS
  25 //config:###    bool "ufs filesystem"
  26 //config:###    default y
  27 //config:###    depends on VOLUMEID
  28 //config:###    help
  29 //config:###      TODO
  30 //config:
  31
  32 #include "volume_id_internal.h"
  33
  34 struct ufs_super_block {
  35         uint32_t        fs_link;
  36         uint32_t        fs_rlink;
  37         uint32_t        fs_sblkno;
  38         uint32_t        fs_cblkno;
  39         uint32_t        fs_iblkno;
  40         uint32_t        fs_dblkno;
  41         uint32_t        fs_cgoffset;
  42         uint32_t        fs_cgmask;
  43         uint32_t        fs_time;
  44         uint32_t        fs_size;
  45         uint32_t        fs_dsize;
  46         uint32_t        fs_ncg;
  47         uint32_t        fs_bsize;
  48         uint32_t        fs_fsize;
  49         uint32_t        fs_frag;
  50         uint32_t        fs_minfree;
  51         uint32_t        fs_rotdelay;
  52         uint32_t        fs_rps;
  53         uint32_t        fs_bmask;
  54         uint32_t        fs_fmask;
  55         uint32_t        fs_bshift;
  56         uint32_t        fs_fshift;
  57         uint32_t        fs_maxcontig;
  58         uint32_t        fs_maxbpg;
  59         uint32_t        fs_fragshift;
  60         uint32_t        fs_fsbtodb;
  61         uint32_t        fs_sbsize;
  62         uint32_t        fs_csmask;
  63         uint32_t        fs_csshift;
  64         uint32_t        fs_nindir;
  65         uint32_t        fs_inopb;
  66         uint32_t        fs_nspf;
  67         uint32_t        fs_optim;
  68         uint32_t        fs_npsect_state;
  69         uint32_t        fs_interleave;
  70         uint32_t        fs_trackskew;
  71         uint32_t        fs_id[2];
  72         uint32_t        fs_csaddr;
  73         uint32_t        fs_cssize;
  74         uint32_t        fs_cgsize;
  75         uint32_t        fs_ntrak;
  76         uint32_t        fs_nsect;
  77         uint32_t        fs_spc;
  78         uint32_t        fs_ncyl;
  79         uint32_t        fs_cpg;
  80         uint32_t        fs_ipg;
  81         uint32_t        fs_fpg;
  82         struct ufs_csum {
  83                 uint32_t        cs_ndir;
  84                 uint32_t        cs_nbfree;
  85                 uint32_t        cs_nifree;
  86                 uint32_t        cs_nffree;
  87         } PACKED fs_cstotal;
  88         int8_t          fs_fmod;
  89         int8_t          fs_clean;
  90         int8_t          fs_ronly;
  91         int8_t          fs_flags;
  92         union {
  93                 struct {
  94                         int8_t  fs_fsmnt[512];
  95                         uint32_t        fs_cgrotor;
  96                         uint32_t        fs_csp[31];
  97                         uint32_t        fs_maxcluster;
  98                         uint32_t        fs_cpc;
  99                         uint16_t        fs_opostbl[16][8];
 100                 } PACKED fs_u1;
 101                 struct {
 102                         int8_t          fs_fsmnt[468];
 103                         uint8_t         fs_volname[32];
 104                         uint64_t        fs_swuid;
 105                         int32_t         fs_pad;
 106                         uint32_t        fs_cgrotor;
 107                         uint32_t        fs_ocsp[28];
 108                         uint32_t        fs_contigdirs;
 109                         uint32_t        fs_csp;
 110                         uint32_t        fs_maxcluster;
 111                         uint32_t        fs_active;
 112                         int32_t         fs_old_cpc;
 113                         int32_t         fs_maxbsize;
 114                         int64_t         fs_sparecon64[17];
 115                         int64_t         fs_sblockloc;
 116                         struct ufs2_csum_total {
 117                                 uint64_t        cs_ndir;
 118                                 uint64_t        cs_nbfree;
 119                                 uint64_t        cs_nifree;
 120                                 uint64_t        cs_nffree;
 121                                 uint64_t        cs_numclusters;
 122                                 uint64_t        cs_spare[3];
 123                         } PACKED fs_cstotal;
 124                         struct ufs_timeval {
 125                                 int32_t         tv_sec;
 126                                 int32_t         tv_usec;
 127                         } PACKED fs_time;
 128                         int64_t         fs_size;
 129                         int64_t         fs_dsize;
 130                         uint64_t        fs_csaddr;
 131                         int64_t         fs_pendingblocks;
 132                         int32_t         fs_pendinginodes;
 133                 } PACKED fs_u2;
 134         }  fs_u11;
 135         union {
 136                 struct {
 137                         int32_t         fs_sparecon[53];
 138                         int32_t         fs_reclaim;
 139                         int32_t         fs_sparecon2[1];
 140                         int32_t         fs_state;
 141                         uint32_t        fs_qbmask[2];
 142                         uint32_t        fs_qfmask[2];
 143                 } PACKED fs_sun;
 144                 struct {
 145                         int32_t         fs_sparecon[53];
 146                         int32_t         fs_reclaim;
 147                         int32_t         fs_sparecon2[1];
 148                         uint32_t        fs_npsect;
 149                         uint32_t        fs_qbmask[2];
 150                         uint32_t        fs_qfmask[2];
 151                 } PACKED fs_sunx86;
 152                 struct {
 153                         int32_t         fs_sparecon[50];
 154                         int32_t         fs_contigsumsize;
 155                         int32_t         fs_maxsymlinklen;
 156                         int32_t         fs_inodefmt;
 157                         uint32_t        fs_maxfilesize[2];
 158                         uint32_t        fs_qbmask[2];
 159                         uint32_t        fs_qfmask[2];
 160                         int32_t         fs_state;
 161                 } PACKED fs_44;
 162         } fs_u2;
 163         int32_t         fs_postblformat;
 164         int32_t         fs_nrpos;
 165         int32_t         fs_postbloff;
 166         int32_t         fs_rotbloff;
 167         uint32_t        fs_magic;
 168         uint8_t         fs_space[1];
 169 } PACKED;
 170
 171 #define UFS_MAGIC                       0x00011954
 172 #define UFS2_MAGIC                      0x19540119
 173 #define UFS_MAGIC_FEA                   0x00195612
 174 #define UFS_MAGIC_LFN                   0x00095014
 175
 176 int FAST_FUNC volume_id_probe_ufs(struct volume_id *id, uint64_t off)
 177 {
 178         static const short offsets[] = { 0, 8, 64, 256 };
 179
 180         uint32_t magic;
 181         unsigned i;
 182         struct ufs_super_block *ufs;
 183
 184         dbg("probing at offset 0x%llx", (unsigned long long) off);
 185
 186         for (i = 0; i < ARRAY_SIZE(offsets); i++) {
 187                 ufs = volume_id_get_buffer(id, off + (offsets[i] * 0x400), 0x800);
 188                 if (ufs == NULL)
 189                         return -1;
 190
 191                 dbg("offset 0x%x", offsets[i] * 0x400);
 192                 magic = ufs->fs_magic;
 193                 if ((magic == cpu_to_be32(UFS_MAGIC))
 194                  || (magic == cpu_to_be32(UFS2_MAGIC))
 195                  || (magic == cpu_to_be32(UFS_MAGIC_FEA))
 196                  || (magic == cpu_to_be32(UFS_MAGIC_LFN))
 197                 ) {
 198                         dbg("magic 0x%08x(be)", magic);
 199                         goto found;
 200                 }
 201                 if ((magic == cpu_to_le32(UFS_MAGIC))
 202                  || (magic == cpu_to_le32(UFS2_MAGIC))
 203                  || (magic == cpu_to_le32(UFS_MAGIC_FEA))
 204                  || (magic == cpu_to_le32(UFS_MAGIC_LFN))
 205                 ) {
 206                         dbg("magic 0x%08x(le)", magic);
 207                         goto found;
 208                 }
 209         }
 210         return -1;
 211
 212  found:
 213 //      volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
 214 //      id->type = "ufs";
 215
 216         return 0;
 217 }