1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
|
/*
* Copyright (C) 2008 Karel Zak <kzak@redhat.com>
*
* Inspired by libvolume_id by
* Kay Sievers <kay.sievers@vrfy.org>
*
* This file may be redistributed under the terms of the
* GNU Lesser General Public License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <stdint.h>
#include <stddef.h>
#include "superblocks.h"
struct ufs_super_block {
uint32_t fs_link;
uint32_t fs_rlink;
uint32_t fs_sblkno;
uint32_t fs_cblkno;
uint32_t fs_iblkno;
uint32_t fs_dblkno;
uint32_t fs_cgoffset;
uint32_t fs_cgmask;
uint32_t fs_time;
uint32_t fs_size;
uint32_t fs_dsize;
uint32_t fs_ncg;
uint32_t fs_bsize;
uint32_t fs_fsize;
uint32_t fs_frag;
uint32_t fs_minfree;
uint32_t fs_rotdelay;
uint32_t fs_rps;
uint32_t fs_bmask;
uint32_t fs_fmask;
uint32_t fs_bshift;
uint32_t fs_fshift;
uint32_t fs_maxcontig;
uint32_t fs_maxbpg;
uint32_t fs_fragshift;
uint32_t fs_fsbtodb;
uint32_t fs_sbsize;
uint32_t fs_csmask;
uint32_t fs_csshift;
uint32_t fs_nindir;
uint32_t fs_inopb;
uint32_t fs_nspf;
uint32_t fs_optim;
uint32_t fs_npsect_state;
uint32_t fs_interleave;
uint32_t fs_trackskew;
uint32_t fs_id[2];
uint32_t fs_csaddr;
uint32_t fs_cssize;
uint32_t fs_cgsize;
uint32_t fs_ntrak;
uint32_t fs_nsect;
uint32_t fs_spc;
uint32_t fs_ncyl;
uint32_t fs_cpg;
uint32_t fs_ipg;
uint32_t fs_fpg;
struct ufs_csum {
uint32_t cs_ndir;
uint32_t cs_nbfree;
uint32_t cs_nifree;
uint32_t cs_nffree;
} fs_cstotal;
int8_t fs_fmod;
int8_t fs_clean;
int8_t fs_ronly;
int8_t fs_flags;
union {
struct {
int8_t fs_fsmnt[512];
uint32_t fs_cgrotor;
uint32_t fs_csp[31];
uint32_t fs_maxcluster;
uint32_t fs_cpc;
uint16_t fs_opostbl[16][8];
} fs_u1;
struct {
int8_t fs_fsmnt[468];
uint8_t fs_volname[32];
uint64_t fs_swuid;
int32_t fs_pad;
uint32_t fs_cgrotor;
uint32_t fs_ocsp[28];
uint32_t fs_contigdirs;
uint32_t fs_csp;
uint32_t fs_maxcluster;
uint32_t fs_active;
int32_t fs_old_cpc;
int32_t fs_maxbsize;
int64_t fs_sparecon64[17];
int64_t fs_sblockloc;
struct ufs2_csum_total {
uint64_t cs_ndir;
uint64_t cs_nbfree;
uint64_t cs_nifree;
uint64_t cs_nffree;
uint64_t cs_numclusters;
uint64_t cs_spare[3];
} fs_cstotal;
struct ufs_timeval {
int32_t tv_sec;
int32_t tv_usec;
} fs_time;
int64_t fs_size;
int64_t fs_dsize;
uint64_t fs_csaddr;
int64_t fs_pendingblocks;
int32_t fs_pendinginodes;
} __attribute__((packed)) fs_u2;
} fs_u11;
union {
struct {
int32_t fs_sparecon[53];
int32_t fs_reclaim;
int32_t fs_sparecon2[1];
int32_t fs_state;
uint32_t fs_qbmask[2];
uint32_t fs_qfmask[2];
} fs_sun;
struct {
int32_t fs_sparecon[53];
int32_t fs_reclaim;
int32_t fs_sparecon2[1];
uint32_t fs_npsect;
uint32_t fs_qbmask[2];
uint32_t fs_qfmask[2];
} fs_sunx86;
struct {
int32_t fs_sparecon[50];
int32_t fs_contigsumsize;
int32_t fs_maxsymlinklen;
int32_t fs_inodefmt;
uint32_t fs_maxfilesize[2];
uint32_t fs_qbmask[2];
uint32_t fs_qfmask[2];
int32_t fs_state;
} fs_44;
} fs_u2;
int32_t fs_postblformat;
int32_t fs_nrpos;
int32_t fs_postbloff;
int32_t fs_rotbloff;
uint32_t fs_magic;
uint8_t fs_space[1];
} __attribute__((packed));
#define UFS_MAGIC 0x00011954
#define UFS2_MAGIC 0x19540119
#define UFS_MAGIC_FEA 0x00195612
#define UFS_MAGIC_LFN 0x00095014
#define UFS_MAGIC_SEC 0x00612195
#define UFS_MAGIC_4GB 0x05231994
static int probe_ufs(blkid_probe pr,
const struct blkid_idmag *mag __attribute__((__unused__)))
{
int offsets[] = { 0, 8, 64, 256 };
uint32_t mags[] = {
UFS2_MAGIC, UFS_MAGIC, UFS_MAGIC_FEA, UFS_MAGIC_LFN,
UFS_MAGIC_SEC, UFS_MAGIC_4GB
};
size_t i;
uint32_t magic;
struct ufs_super_block *ufs;
int is_be;
for (i = 0; i < ARRAY_SIZE(offsets); i++) {
uint32_t magLE, magBE;
size_t y;
ufs = (struct ufs_super_block *)
blkid_probe_get_buffer(pr,
offsets[i] * 1024,
sizeof(struct ufs_super_block));
if (!ufs)
return errno ? -errno : 1;
magBE = be32_to_cpu(ufs->fs_magic);
magLE = le32_to_cpu(ufs->fs_magic);
for (y = 0; y < ARRAY_SIZE(mags); y++) {
if (magLE == mags[y] || magBE == mags[y]) {
magic = mags[y];
is_be = (magBE == mags[y]);
goto found;
}
}
}
return 1;
found:
if (magic == UFS2_MAGIC) {
blkid_probe_set_version(pr, "2");
blkid_probe_set_label(pr, ufs->fs_u11.fs_u2.fs_volname,
sizeof(ufs->fs_u11.fs_u2.fs_volname));
} else
blkid_probe_set_version(pr, "1");
if (ufs->fs_id[0] || ufs->fs_id[1])
{
if (is_be)
blkid_probe_sprintf_uuid(pr,
(unsigned char *) &ufs->fs_id,
sizeof(ufs->fs_id),
"%08x%08x",
be32_to_cpu(ufs->fs_id[0]),
be32_to_cpu(ufs->fs_id[1]));
else
blkid_probe_sprintf_uuid(pr,
(unsigned char *) &ufs->fs_id,
sizeof(ufs->fs_id),
"%08x%08x",
le32_to_cpu(ufs->fs_id[0]),
le32_to_cpu(ufs->fs_id[1]));
}
if (blkid_probe_set_magic(pr,
(offsets[i] * 1024) +
offsetof(struct ufs_super_block, fs_magic),
sizeof(ufs->fs_magic),
(unsigned char *) &ufs->fs_magic))
return 1;
uint32_t bsize = 0;
if (!is_be)
bsize = le32_to_cpu(ufs->fs_fsize);
else
bsize = be32_to_cpu(ufs->fs_fsize);
blkid_probe_set_fsblocksize(pr, bsize);
blkid_probe_set_block_size(pr, bsize);
blkid_probe_set_fsendianness(pr, is_be ?
BLKID_ENDIANNESS_BIG : BLKID_ENDIANNESS_LITTLE);
return 0;
}
/*
* According to libvolume_id the UFS superblock could be on four positions.
* The original libblkid has checked one position (.kboff=8) only.
*
* We know four UFS magic strings and UFS could be both little-endian and
* big-endian. ... so we have:
*
* 4 position * 4 string * 2 version = 32 magic strings
*
* It seems simpler to check for these string in probing function that hardcode
* all in the .magic array.
*/
const struct blkid_idinfo ufs_idinfo =
{
.name = "ufs",
.usage = BLKID_USAGE_FILESYSTEM,
.probefunc = probe_ufs,
.magics = BLKID_NONE_MAGIC
};
|
