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