[3320] | 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 | #include "volume_id_internal.h"
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| 22 |
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| 23 | struct ufs_super_block {
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| 24 | uint32_t fs_link;
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| 25 | uint32_t fs_rlink;
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| 26 | uint32_t fs_sblkno;
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| 27 | uint32_t fs_cblkno;
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| 28 | uint32_t fs_iblkno;
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| 29 | uint32_t fs_dblkno;
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| 30 | uint32_t fs_cgoffset;
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| 31 | uint32_t fs_cgmask;
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| 32 | uint32_t fs_time;
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| 33 | uint32_t fs_size;
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| 34 | uint32_t fs_dsize;
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| 35 | uint32_t fs_ncg;
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| 36 | uint32_t fs_bsize;
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| 37 | uint32_t fs_fsize;
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| 38 | uint32_t fs_frag;
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| 39 | uint32_t fs_minfree;
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| 40 | uint32_t fs_rotdelay;
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| 41 | uint32_t fs_rps;
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| 42 | uint32_t fs_bmask;
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| 43 | uint32_t fs_fmask;
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| 44 | uint32_t fs_bshift;
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| 45 | uint32_t fs_fshift;
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| 46 | uint32_t fs_maxcontig;
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| 47 | uint32_t fs_maxbpg;
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| 48 | uint32_t fs_fragshift;
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| 49 | uint32_t fs_fsbtodb;
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| 50 | uint32_t fs_sbsize;
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| 51 | uint32_t fs_csmask;
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| 52 | uint32_t fs_csshift;
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| 53 | uint32_t fs_nindir;
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| 54 | uint32_t fs_inopb;
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| 55 | uint32_t fs_nspf;
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| 56 | uint32_t fs_optim;
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| 57 | uint32_t fs_npsect_state;
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| 58 | uint32_t fs_interleave;
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| 59 | uint32_t fs_trackskew;
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| 60 | uint32_t fs_id[2];
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| 61 | uint32_t fs_csaddr;
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| 62 | uint32_t fs_cssize;
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| 63 | uint32_t fs_cgsize;
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| 64 | uint32_t fs_ntrak;
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| 65 | uint32_t fs_nsect;
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| 66 | uint32_t fs_spc;
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| 67 | uint32_t fs_ncyl;
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| 68 | uint32_t fs_cpg;
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| 69 | uint32_t fs_ipg;
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| 70 | uint32_t fs_fpg;
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| 71 | struct ufs_csum {
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| 72 | uint32_t cs_ndir;
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| 73 | uint32_t cs_nbfree;
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| 74 | uint32_t cs_nifree;
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| 75 | uint32_t cs_nffree;
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| 76 | } PACKED fs_cstotal;
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| 77 | int8_t fs_fmod;
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| 78 | int8_t fs_clean;
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| 79 | int8_t fs_ronly;
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| 80 | int8_t fs_flags;
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| 81 | union {
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| 82 | struct {
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| 83 | int8_t fs_fsmnt[512];
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| 84 | uint32_t fs_cgrotor;
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| 85 | uint32_t fs_csp[31];
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| 86 | uint32_t fs_maxcluster;
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| 87 | uint32_t fs_cpc;
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| 88 | uint16_t fs_opostbl[16][8];
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| 89 | } PACKED fs_u1;
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| 90 | struct {
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| 91 | int8_t fs_fsmnt[468];
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| 92 | uint8_t fs_volname[32];
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| 93 | uint64_t fs_swuid;
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| 94 | int32_t fs_pad;
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| 95 | uint32_t fs_cgrotor;
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| 96 | uint32_t fs_ocsp[28];
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| 97 | uint32_t fs_contigdirs;
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| 98 | uint32_t fs_csp;
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| 99 | uint32_t fs_maxcluster;
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| 100 | uint32_t fs_active;
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| 101 | int32_t fs_old_cpc;
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| 102 | int32_t fs_maxbsize;
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| 103 | int64_t fs_sparecon64[17];
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| 104 | int64_t fs_sblockloc;
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| 105 | struct ufs2_csum_total {
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| 106 | uint64_t cs_ndir;
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| 107 | uint64_t cs_nbfree;
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| 108 | uint64_t cs_nifree;
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| 109 | uint64_t cs_nffree;
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| 110 | uint64_t cs_numclusters;
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| 111 | uint64_t cs_spare[3];
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| 112 | } PACKED fs_cstotal;
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| 113 | struct ufs_timeval {
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| 114 | int32_t tv_sec;
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| 115 | int32_t tv_usec;
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| 116 | } PACKED fs_time;
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| 117 | int64_t fs_size;
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| 118 | int64_t fs_dsize;
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| 119 | uint64_t fs_csaddr;
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| 120 | int64_t fs_pendingblocks;
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| 121 | int32_t fs_pendinginodes;
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| 122 | } PACKED fs_u2;
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| 123 | } fs_u11;
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| 124 | union {
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| 125 | struct {
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| 126 | int32_t fs_sparecon[53];
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| 127 | int32_t fs_reclaim;
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| 128 | int32_t fs_sparecon2[1];
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| 129 | int32_t fs_state;
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| 130 | uint32_t fs_qbmask[2];
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| 131 | uint32_t fs_qfmask[2];
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| 132 | } PACKED fs_sun;
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| 133 | struct {
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| 134 | int32_t fs_sparecon[53];
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| 135 | int32_t fs_reclaim;
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| 136 | int32_t fs_sparecon2[1];
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| 137 | uint32_t fs_npsect;
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| 138 | uint32_t fs_qbmask[2];
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| 139 | uint32_t fs_qfmask[2];
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| 140 | } PACKED fs_sunx86;
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| 141 | struct {
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| 142 | int32_t fs_sparecon[50];
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| 143 | int32_t fs_contigsumsize;
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| 144 | int32_t fs_maxsymlinklen;
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| 145 | int32_t fs_inodefmt;
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| 146 | uint32_t fs_maxfilesize[2];
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| 147 | uint32_t fs_qbmask[2];
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| 148 | uint32_t fs_qfmask[2];
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| 149 | int32_t fs_state;
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| 150 | } PACKED fs_44;
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| 151 | } fs_u2;
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| 152 | int32_t fs_postblformat;
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| 153 | int32_t fs_nrpos;
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| 154 | int32_t fs_postbloff;
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| 155 | int32_t fs_rotbloff;
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| 156 | uint32_t fs_magic;
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| 157 | uint8_t fs_space[1];
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| 158 | } PACKED;
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| 159 |
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| 160 | #define UFS_MAGIC 0x00011954
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| 161 | #define UFS2_MAGIC 0x19540119
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| 162 | #define UFS_MAGIC_FEA 0x00195612
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| 163 | #define UFS_MAGIC_LFN 0x00095014
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| 164 |
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| 165 | int FAST_FUNC volume_id_probe_ufs(struct volume_id *id, uint64_t off)
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| 166 | {
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| 167 | static const short offsets[] = { 0, 8, 64, 256 };
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| 168 |
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| 169 | uint32_t magic;
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| 170 | unsigned i;
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| 171 | struct ufs_super_block *ufs;
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| 172 |
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| 173 | dbg("probing at offset 0x%llx", (unsigned long long) off);
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| 174 |
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| 175 | for (i = 0; i < ARRAY_SIZE(offsets); i++) {
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| 176 | ufs = volume_id_get_buffer(id, off + (offsets[i] * 0x400), 0x800);
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| 177 | if (ufs == NULL)
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| 178 | return -1;
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| 179 |
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| 180 | dbg("offset 0x%x", offsets[i] * 0x400);
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| 181 | magic = ufs->fs_magic;
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| 182 | if ((magic == cpu_to_be32(UFS_MAGIC))
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| 183 | || (magic == cpu_to_be32(UFS2_MAGIC))
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| 184 | || (magic == cpu_to_be32(UFS_MAGIC_FEA))
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| 185 | || (magic == cpu_to_be32(UFS_MAGIC_LFN))
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| 186 | ) {
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| 187 | dbg("magic 0x%08x(be)", magic);
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| 188 | goto found;
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| 189 | }
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| 190 | if ((magic == cpu_to_le32(UFS_MAGIC))
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| 191 | || (magic == cpu_to_le32(UFS2_MAGIC))
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| 192 | || (magic == cpu_to_le32(UFS_MAGIC_FEA))
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| 193 | || (magic == cpu_to_le32(UFS_MAGIC_LFN))
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| 194 | ) {
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| 195 | dbg("magic 0x%08x(le)", magic);
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| 196 | goto found;
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| 197 | }
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| 198 | }
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| 199 | return -1;
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| 200 |
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| 201 | found:
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| 202 | // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
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| 203 | // id->type = "ufs";
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| 204 |
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| 205 | return 0;
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| 206 | }
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