1 | /*
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2 | * volume_id - reads filesystem label and uuid
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3 | *
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4 | * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
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5 | *
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6 | * This library is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU Lesser General Public
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8 | * License as published by the Free Software Foundation; either
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9 | * version 2.1 of the License, or (at your option) any later version.
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10 | *
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11 | * This library is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | * Lesser General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU Lesser General Public
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17 | * License along with this library; if not, write to the Free Software
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18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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19 | */
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20 |
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21 | //kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_UFS) += ufs.o
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22 |
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23 | //config:
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24 | //config:### config FEATURE_VOLUMEID_UFS
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25 | //config:### bool "ufs filesystem"
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26 | //config:### default y
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27 | //config:### depends on VOLUMEID
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28 | //config:### help
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29 | //config:### TODO
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30 | //config:
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31 |
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32 | #include "volume_id_internal.h"
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33 |
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34 | struct ufs_super_block {
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35 | uint32_t fs_link;
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36 | uint32_t fs_rlink;
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37 | uint32_t fs_sblkno;
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38 | uint32_t fs_cblkno;
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39 | uint32_t fs_iblkno;
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40 | uint32_t fs_dblkno;
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41 | uint32_t fs_cgoffset;
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42 | uint32_t fs_cgmask;
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43 | uint32_t fs_time;
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44 | uint32_t fs_size;
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45 | uint32_t fs_dsize;
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46 | uint32_t fs_ncg;
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47 | uint32_t fs_bsize;
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48 | uint32_t fs_fsize;
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49 | uint32_t fs_frag;
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50 | uint32_t fs_minfree;
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51 | uint32_t fs_rotdelay;
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52 | uint32_t fs_rps;
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53 | uint32_t fs_bmask;
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54 | uint32_t fs_fmask;
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55 | uint32_t fs_bshift;
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56 | uint32_t fs_fshift;
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57 | uint32_t fs_maxcontig;
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58 | uint32_t fs_maxbpg;
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59 | uint32_t fs_fragshift;
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60 | uint32_t fs_fsbtodb;
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61 | uint32_t fs_sbsize;
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62 | uint32_t fs_csmask;
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63 | uint32_t fs_csshift;
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64 | uint32_t fs_nindir;
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65 | uint32_t fs_inopb;
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66 | uint32_t fs_nspf;
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67 | uint32_t fs_optim;
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68 | uint32_t fs_npsect_state;
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69 | uint32_t fs_interleave;
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70 | uint32_t fs_trackskew;
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71 | uint32_t fs_id[2];
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72 | uint32_t fs_csaddr;
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73 | uint32_t fs_cssize;
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74 | uint32_t fs_cgsize;
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75 | uint32_t fs_ntrak;
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76 | uint32_t fs_nsect;
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77 | uint32_t fs_spc;
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78 | uint32_t fs_ncyl;
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79 | uint32_t fs_cpg;
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80 | uint32_t fs_ipg;
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81 | uint32_t fs_fpg;
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82 | struct ufs_csum {
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83 | uint32_t cs_ndir;
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84 | uint32_t cs_nbfree;
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85 | uint32_t cs_nifree;
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86 | uint32_t cs_nffree;
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87 | } PACKED fs_cstotal;
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88 | int8_t fs_fmod;
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89 | int8_t fs_clean;
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90 | int8_t fs_ronly;
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91 | int8_t fs_flags;
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92 | union {
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93 | struct {
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94 | int8_t fs_fsmnt[512];
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95 | uint32_t fs_cgrotor;
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96 | uint32_t fs_csp[31];
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97 | uint32_t fs_maxcluster;
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98 | uint32_t fs_cpc;
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99 | uint16_t fs_opostbl[16][8];
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100 | } PACKED fs_u1;
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101 | struct {
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102 | int8_t fs_fsmnt[468];
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103 | uint8_t fs_volname[32];
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104 | uint64_t fs_swuid;
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105 | int32_t fs_pad;
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106 | uint32_t fs_cgrotor;
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107 | uint32_t fs_ocsp[28];
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108 | uint32_t fs_contigdirs;
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109 | uint32_t fs_csp;
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110 | uint32_t fs_maxcluster;
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111 | uint32_t fs_active;
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112 | int32_t fs_old_cpc;
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113 | int32_t fs_maxbsize;
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114 | int64_t fs_sparecon64[17];
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115 | int64_t fs_sblockloc;
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116 | struct ufs2_csum_total {
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117 | uint64_t cs_ndir;
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118 | uint64_t cs_nbfree;
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119 | uint64_t cs_nifree;
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120 | uint64_t cs_nffree;
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121 | uint64_t cs_numclusters;
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122 | uint64_t cs_spare[3];
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123 | } PACKED fs_cstotal;
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124 | struct ufs_timeval {
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125 | int32_t tv_sec;
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126 | int32_t tv_usec;
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127 | } PACKED fs_time;
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128 | int64_t fs_size;
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129 | int64_t fs_dsize;
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130 | uint64_t fs_csaddr;
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131 | int64_t fs_pendingblocks;
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132 | int32_t fs_pendinginodes;
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133 | } PACKED fs_u2;
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134 | } fs_u11;
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135 | union {
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136 | struct {
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137 | int32_t fs_sparecon[53];
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138 | int32_t fs_reclaim;
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139 | int32_t fs_sparecon2[1];
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140 | int32_t fs_state;
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141 | uint32_t fs_qbmask[2];
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142 | uint32_t fs_qfmask[2];
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143 | } PACKED fs_sun;
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144 | struct {
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145 | int32_t fs_sparecon[53];
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146 | int32_t fs_reclaim;
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147 | int32_t fs_sparecon2[1];
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148 | uint32_t fs_npsect;
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149 | uint32_t fs_qbmask[2];
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150 | uint32_t fs_qfmask[2];
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151 | } PACKED fs_sunx86;
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152 | struct {
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153 | int32_t fs_sparecon[50];
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154 | int32_t fs_contigsumsize;
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155 | int32_t fs_maxsymlinklen;
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156 | int32_t fs_inodefmt;
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157 | uint32_t fs_maxfilesize[2];
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158 | uint32_t fs_qbmask[2];
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159 | uint32_t fs_qfmask[2];
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160 | int32_t fs_state;
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161 | } PACKED fs_44;
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162 | } fs_u2;
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163 | int32_t fs_postblformat;
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164 | int32_t fs_nrpos;
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165 | int32_t fs_postbloff;
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166 | int32_t fs_rotbloff;
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167 | uint32_t fs_magic;
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168 | uint8_t fs_space[1];
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169 | } PACKED;
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170 |
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171 | #define UFS_MAGIC 0x00011954
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172 | #define UFS2_MAGIC 0x19540119
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173 | #define UFS_MAGIC_FEA 0x00195612
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174 | #define UFS_MAGIC_LFN 0x00095014
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175 |
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176 | int FAST_FUNC volume_id_probe_ufs(struct volume_id *id, uint64_t off)
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177 | {
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178 | static const short offsets[] = { 0, 8, 64, 256 };
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179 |
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180 | uint32_t magic;
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181 | unsigned i;
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182 | struct ufs_super_block *ufs;
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183 |
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184 | dbg("probing at offset 0x%llx", (unsigned long long) off);
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185 |
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186 | for (i = 0; i < ARRAY_SIZE(offsets); i++) {
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187 | ufs = volume_id_get_buffer(id, off + (offsets[i] * 0x400), 0x800);
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188 | if (ufs == NULL)
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189 | return -1;
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190 |
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191 | dbg("offset 0x%x", offsets[i] * 0x400);
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192 | magic = ufs->fs_magic;
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193 | if ((magic == cpu_to_be32(UFS_MAGIC))
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194 | || (magic == cpu_to_be32(UFS2_MAGIC))
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195 | || (magic == cpu_to_be32(UFS_MAGIC_FEA))
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196 | || (magic == cpu_to_be32(UFS_MAGIC_LFN))
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197 | ) {
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198 | dbg("magic 0x%08x(be)", magic);
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199 | goto found;
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200 | }
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201 | if ((magic == cpu_to_le32(UFS_MAGIC))
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202 | || (magic == cpu_to_le32(UFS2_MAGIC))
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203 | || (magic == cpu_to_le32(UFS_MAGIC_FEA))
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204 | || (magic == cpu_to_le32(UFS_MAGIC_LFN))
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205 | ) {
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206 | dbg("magic 0x%08x(le)", magic);
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207 | goto found;
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208 | }
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209 | }
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210 | return -1;
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211 |
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212 | found:
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213 | // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
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214 | // id->type = "ufs";
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215 |
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216 | return 0;
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217 | }
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