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
|
/*
* Copyright (c) 2002 Juli Mallett. All rights reserved.
*
* This software was written by Juli Mallett <jmallett@FreeBSD.org> for the
* FreeBSD project. Redistribution and use in source and binary forms, with
* or without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistribution of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef __LIBUFS_H__
#define __LIBUFS_H__
/*
* libufs structures.
*/
/*
* userland ufs disk.
*/
struct uufsd {
const char *d_name; /* disk name */
int d_ufs; /* decimal UFS version */
int d_fd; /* raw device file descriptor */
long d_bsize; /* device bsize */
ufs2_daddr_t d_sblock; /* superblock location */
struct csum *d_sbcsum; /* Superblock summary info */
caddr_t d_inoblock; /* inode block */
ino_t d_inomin; /* low inode */
ino_t d_inomax; /* high inode */
union {
struct fs d_fs; /* filesystem information */
char d_sb[MAXBSIZE];
/* superblock as buffer */
} d_sbunion;
union {
struct cg d_cg; /* cylinder group */
char d_buf[MAXBSIZE];
/* cylinder group storage */
} d_cgunion;
int d_ccg; /* current cylinder group */
int d_lcg; /* last cylinder group (in d_cg) */
const char *d_error; /* human readable disk error */
int d_mine; /* internal flags */
#define d_fs d_sbunion.d_fs
#define d_sb d_sbunion.d_sb
#define d_cg d_cgunion.d_cg
};
/*
* libufs macros (internal, non-exported).
*/
#ifdef _LIBUFS
/*
* Trace steps through libufs, to be used at entry and erroneous return.
*/
static inline void
ERROR(struct uufsd *u, const char *str)
{
#ifdef _LIBUFS_DEBUGGING
if (str != NULL) {
fprintf(stderr, "libufs: %s", str);
if (errno != 0)
fprintf(stderr, ": %s", strerror(errno));
fprintf(stderr, "\n");
}
#endif
if (u != NULL)
u->d_error = str;
}
#endif /* _LIBUFS */
__BEGIN_DECLS
/*
* libufs prototypes.
*/
/*
* block.c
*/
ssize_t bread(struct uufsd *, ufs2_daddr_t, void *, size_t);
ssize_t bwrite(struct uufsd *, ufs2_daddr_t, const void *, size_t);
int berase(struct uufsd *, ufs2_daddr_t, ufs2_daddr_t);
/*
* cgroup.c
*/
ufs2_daddr_t cgballoc(struct uufsd *);
int cgbfree(struct uufsd *, ufs2_daddr_t, long);
ino_t cgialloc(struct uufsd *);
int cgread(struct uufsd *);
int cgread1(struct uufsd *, int);
int cgwrite(struct uufsd *);
int cgwrite1(struct uufsd *, int);
/*
* inode.c
*/
int getino(struct uufsd *, void **, ino_t, int *);
int putino(struct uufsd *);
/*
* sblock.c
*/
int sbread(struct uufsd *);
int sbwrite(struct uufsd *, int);
/*
* type.c
*/
int ufs_disk_close(struct uufsd *);
int ufs_disk_fillout(struct uufsd *, const char *);
int ufs_disk_fillout_blank(struct uufsd *, const char *);
int ufs_disk_write(struct uufsd *);
/*
* ffs_subr.c
*/
void ffs_clrblock(struct fs *, u_char *, ufs1_daddr_t);
void ffs_clusteracct(struct fs *, struct cg *, ufs1_daddr_t, int);
void ffs_fragacct(struct fs *, int, int32_t [], int);
int ffs_isblock(struct fs *, u_char *, ufs1_daddr_t);
int ffs_isfreeblock(struct fs *, u_char *, ufs1_daddr_t);
void ffs_setblock(struct fs *, u_char *, ufs1_daddr_t);
__END_DECLS
#endif /* __LIBUFS_H__ */
|
