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Viewing changes to shlibs/blkid/src/probers/ufs.c

  • Committer: Bazaar Package Importer
  • Author(s): Scott James Remnant
  • Date: 2009-07-16 15:48:23 UTC
  • mfrom: (1.3.7 upstream)
  • Revision ID: james.westby@ubuntu.com-20090716154823-i26fshvs4v8h90qh
Tags: 2.16-1ubuntu1
https://launchpad.net/bugs/383697
* Merge from Debian, remaining changes:
  - Since udev is required in Ubuntu, the hwclock.sh init script is
    not called on startup and the hwclockfirst.sh init script is
    removed.
  - Remove /etc/adjtime on upgrade if it was not used.
  - Install custom blkid.conf to use /dev/.blkid.tab since we don't
    expect device names to survive a reboot
  - No lsb_release call in mount.preinst since we'd need Pre-Depends
    (LP: #383697).

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