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
|
/*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/disklabel.h>
#include <sys/stat.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libufs.h>
int
getino(struct uufsd *disk, void **dino, ino_t inode, int *mode)
{
ino_t min, max;
caddr_t inoblock;
struct ufs1_dinode *dp1;
struct ufs2_dinode *dp2;
struct fs *fs;
ERROR(disk, NULL);
fs = &disk->d_fs;
inoblock = disk->d_inoblock;
min = disk->d_inomin;
max = disk->d_inomax;
if (inoblock == NULL) {
inoblock = malloc(fs->fs_bsize);
if (inoblock == NULL) {
ERROR(disk, "unable to allocate inode block");
return (-1);
}
disk->d_inoblock = inoblock;
}
if (inode >= min && inode < max)
goto gotit;
bread(disk, fsbtodb(fs, ino_to_fsba(fs, inode)), inoblock,
fs->fs_bsize);
disk->d_inomin = min = inode - (inode % INOPB(fs));
disk->d_inomax = max = min + INOPB(fs);
gotit: switch (disk->d_ufs) {
case 1:
dp1 = &((struct ufs1_dinode *)inoblock)[inode - min];
*mode = dp1->di_mode & IFMT;
*dino = dp1;
return (0);
case 2:
dp2 = &((struct ufs2_dinode *)inoblock)[inode - min];
*mode = dp2->di_mode & IFMT;
*dino = dp2;
return (0);
default:
break;
}
ERROR(disk, "unknown UFS filesystem type");
return (-1);
}
int
putino(struct uufsd *disk)
{
struct fs *fs;
fs = &disk->d_fs;
if (disk->d_inoblock == NULL) {
ERROR(disk, "No inode block allocated");
return (-1);
}
if (bwrite(disk, fsbtodb(fs, ino_to_fsba(&disk->d_fs, disk->d_inomin)),
disk->d_inoblock, disk->d_fs.fs_bsize) <= 0)
return (-1);
return (0);
}
|
