blob: 2fc49e99f79833d414a2dd34914f654045ccf200 (
plain)
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
|
/*
* linux/include/linux/ufs_fs_sb.h
*
* Copyright (C) 1996
* Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
* Laboratory for Computer Science Research Computing Facility
* Rutgers, The State University of New Jersey
*
* $Id: ufs_fs_sb.h,v 1.8 1998/05/06 12:04:40 jj Exp $
*
* Write support by Daniel Pirkl <daniel.pirkl@email.cz>
*/
#ifndef __LINUX_UFS_FS_SB_H
#define __LINUX_UFS_FS_SB_H
#include <linux/ufs_fs.h>
/*
* This structure is used for reading disk structures larger
* than the size of fragment.
*/
struct ufs_buffer_head {
unsigned fragment; /* first fragment */
unsigned count; /* number of fragments */
struct buffer_head * bh[UFS_MAXFRAG]; /* buffers */
};
struct ufs_cg_private_info {
struct ufs_cylinder_group ucg;
__u32 c_cgx; /* number of cylidner group */
__u16 c_ncyl; /* number of cyl's this cg */
__u16 c_niblk; /* number of inode blocks this cg */
__u32 c_ndblk; /* number of data blocks this cg */
__u32 c_rotor; /* position of last used block */
__u32 c_frotor; /* position of last used frag */
__u32 c_irotor; /* position of last used inode */
__u32 c_btotoff; /* (__u32) block totals per cylinder */
__u32 c_boff; /* (short) free block positions */
__u32 c_iusedoff; /* (char) used inode map */
__u32 c_freeoff; /* (u_char) free block map */
__u32 c_nextfreeoff; /* (u_char) next available space */
__u32 c_clustersumoff;/* (u_int32) counts of avail clusters */
__u32 c_clusteroff; /* (u_int8) free cluster map */
__u32 c_nclusterblks; /* number of clusters this cg */
};
struct ufs_sb_private_info {
struct ufs_buffer_head s_ubh; /* buffer containing super block */
__u32 s_sblkno; /* offset of super-blocks in filesys */
__u32 s_cblkno; /* offset of cg-block in filesys */
__u32 s_iblkno; /* offset of inode-blocks in filesys */
__u32 s_dblkno; /* offset of first data after cg */
__u32 s_cgoffset; /* cylinder group offset in cylinder */
__u32 s_cgmask; /* used to calc mod fs_ntrak */
__u32 s_size; /* number of blocks (fragments) in fs */
__u32 s_dsize; /* number of data blocks in fs */
__u32 s_ncg; /* number of cylinder groups */
__u32 s_bsize; /* size of basic blocks */
__u32 s_fsize; /* size of fragments */
__u32 s_fpb; /* fragments per block */
__u32 s_minfree; /* minimum percentage of free blocks */
__u32 s_bmask; /* `blkoff'' calc of blk offsets */
__u32 s_fmask; /* s_fsize mask */
__u32 s_bshift; /* `lblkno'' calc of logical blkno */
__u32 s_fshift; /* s_fsize shift */
__u32 s_fpbshift; /* fragments per block shift */
__u32 s_fsbtodb; /* fsbtodb and dbtofsb shift constant */
__u32 s_sbsize; /* actual size of super block */
__u32 s_csmask; /* csum block offset */
__u32 s_csshift; /* csum block number */
__u32 s_nindir; /* value of NINDIR */
__u32 s_inopb; /* value of INOPB */
__u32 s_nspf; /* value of NSPF */
__u32 s_npsect; /* # sectors/track including spares */
__u32 s_interleave; /* hardware sector interleave */
__u32 s_trackskew; /* sector 0 skew, per track */
__u32 s_csaddr; /* blk addr of cyl grp summary area */
__u32 s_cssize; /* size of cyl grp summary area */
__u32 s_cgsize; /* cylinder group size */
__u32 s_ntrak; /* tracks per cylinder */
__u32 s_nsect; /* sectors per track */
__u32 s_spc; /* sectors per cylinder */
__u32 s_ipg; /* inodes per group */
__u32 s_fpg; /* fragments per group */
__u32 s_cpc; /* cyl per cycle in postbl */
__s32 s_contigsumsize;/* size of cluster summary array, 44bsd */
__s64 s_qbmask; /* ~usb_bmask */
__s64 s_qfmask; /* ~usb_fmask */
__s32 s_postblformat; /* format of positional layout tables */
__s32 s_nrpos; /* number of rotational positions */
__s32 s_postbloff; /* (__s16) rotation block list head */
__s32 s_rotbloff; /* (__u8) blocks for each rotation */
__u32 s_fpbmask; /* fragments per block mask */
__u32 s_apb; /* address per block */
__u32 s_2apb; /* address per block^2 */
__u32 s_3apb; /* address per block^3 */
__u32 s_apbmask; /* address per block mask */
__u32 s_apbshift; /* address per block shift */
__u32 s_2apbshift; /* address per block shift * 2 */
__u32 s_3apbshift; /* address per block shift * 3 */
__u32 s_nspfshift; /* number of sector per fragment shift */
__u32 s_nspb; /* number of sector per block */
__u32 s_inopf; /* inodes per fragment */
__u32 s_sbbase; /* offset of NeXTstep superblock */
__u32 s_bpf; /* bits per fragment */
__u32 s_bpfshift; /* bits per fragment shift*/
__u32 s_bpfmask; /* bits per fragment mask */
};
#define UFS_MAX_GROUP_LOADED 8
#define UFS_CGNO_EMPTY ((unsigned)-1)
struct ufs_sb_info {
struct ufs_sb_private_info * s_uspi;
struct ufs_csum * s_csp[UFS_MAXCSBUFS];
unsigned s_swab;
unsigned s_flags;
struct buffer_head ** s_ucg;
struct ufs_cg_private_info * s_ucpi[UFS_MAX_GROUP_LOADED];
unsigned s_cgno[UFS_MAX_GROUP_LOADED];
unsigned short s_cg_loaded;
unsigned s_mount_opt;
};
/*
* Sizes of this structures are:
* ufs_super_block_first 512
* ufs_super_block_second 512
* ufs_super_block_third 356
*/
struct ufs_super_block_first {
__u32 fs_link;
__u32 fs_rlink;
__u32 fs_sblkno;
__u32 fs_cblkno;
__u32 fs_iblkno;
__u32 fs_dblkno;
__u32 fs_cgoffset;
__u32 fs_cgmask;
__u32 fs_time;
__u32 fs_size;
__u32 fs_dsize;
__u32 fs_ncg;
__u32 fs_bsize;
__u32 fs_fsize;
__u32 fs_frag;
__u32 fs_minfree;
__u32 fs_rotdelay;
__u32 fs_rps;
__u32 fs_bmask;
__u32 fs_fmask;
__u32 fs_bshift;
__u32 fs_fshift;
__u32 fs_maxcontig;
__u32 fs_maxbpg;
__u32 fs_fragshift;
__u32 fs_fsbtodb;
__u32 fs_sbsize;
__u32 fs_csmask;
__u32 fs_csshift;
__u32 fs_nindir;
__u32 fs_inopb;
__u32 fs_nspf;
__u32 fs_optim;
union {
struct {
__u32 fs_npsect;
} fs_sun;
struct {
__s32 fs_state;
} fs_sunx86;
} fs_u1;
__u32 fs_interleave;
__u32 fs_trackskew;
__u32 fs_id[2];
__u32 fs_csaddr;
__u32 fs_cssize;
__u32 fs_cgsize;
__u32 fs_ntrak;
__u32 fs_nsect;
__u32 fs_spc;
__u32 fs_ncyl;
__u32 fs_cpg;
__u32 fs_ipg;
__u32 fs_fpg;
struct ufs_csum fs_cstotal;
__s8 fs_fmod;
__s8 fs_clean;
__s8 fs_ronly;
__s8 fs_flags;
__s8 fs_fsmnt[UFS_MAXMNTLEN - 212];
};
struct ufs_super_block_second {
__s8 fs_fsmnt[212];
__u32 fs_cgrotor;
__u32 fs_csp[UFS_MAXCSBUFS];
__u32 fs_maxcluster;
__u32 fs_cpc;
__u16 fs_opostbl[82];
};
struct ufs_super_block_third {
__u16 fs_opostbl[46];
union {
struct {
__s32 fs_sparecon[53];/* reserved for future constants */
__s32 fs_reclaim;
__s32 fs_sparecon2[1];
__s32 fs_state; /* file system state time stamp */
__u32 fs_qbmask[2]; /* ~usb_bmask */
__u32 fs_qfmask[2]; /* ~usb_fmask */
} fs_sun;
struct {
__s32 fs_sparecon[53];/* reserved for future constants */
__s32 fs_reclaim;
__s32 fs_sparecon2[1];
__u32 fs_npsect; /* # sectors/track including spares */
__u32 fs_qbmask[2]; /* ~usb_bmask */
__u32 fs_qfmask[2]; /* ~usb_fmask */
} fs_sunx86;
struct {
__s32 fs_sparecon[50];/* reserved for future constants */
__s32 fs_contigsumsize;/* size of cluster summary array */
__s32 fs_maxsymlinklen;/* max length of an internal symlink */
__s32 fs_inodefmt; /* format of on-disk inodes */
__u32 fs_maxfilesize[2]; /* max representable file size */
__u32 fs_qbmask[2]; /* ~usb_bmask */
__u32 fs_qfmask[2]; /* ~usb_fmask */
__s32 fs_state; /* file system state time stamp */
} fs_44;
} fs_u2;
__s32 fs_postblformat;
__s32 fs_nrpos;
__s32 fs_postbloff;
__s32 fs_rotbloff;
__s32 fs_magic;
__u8 fs_space[1];
};
#endif /* __LINUX_UFS_FS_SB_H */
|
