1 /*
2 * Copyright (c) 2002 Juli Mallett. All rights reserved.
3 *
4 * This software was written by Juli Mallett <jmallett@FreeBSD.org> for the
5 * FreeBSD project. Redistribution and use in source and binary forms, with
6 * or without modification, are permitted provided that the following
7 * conditions are met:
8 *
9 * 1. Redistribution of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 * 2. Redistribution in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
30
31 #include <sys/param.h>
32 #include <sys/mount.h>
33 #include <sys/disklabel.h>
34 #include <sys/stat.h>
35
36 #include <ufs/ufs/ufsmount.h>
37 #include <ufs/ufs/dinode.h>
38 #include <ufs/ffs/fs.h>
39
40 #include <errno.h>
41 #include <fcntl.h>
42 #include <stdio.h>
43 #include <stdlib.h>
44 #include <string.h>
45 #include <unistd.h>
46
47 #include <libufs.h>
48
49 int
getino(struct uufsd * disk,void ** dino,ino_t inode,int * mode)50 getino(struct uufsd *disk, void **dino, ino_t inode, int *mode)
51 {
52 ino_t min, max;
53 caddr_t inoblock;
54 struct ufs1_dinode *dp1;
55 struct ufs2_dinode *dp2;
56 struct fs *fs;
57
58 ERROR(disk, NULL);
59
60 fs = &disk->d_fs;
61 inoblock = disk->d_inoblock;
62 min = disk->d_inomin;
63 max = disk->d_inomax;
64
65 if (inoblock == NULL) {
66 inoblock = malloc(fs->fs_bsize);
67 if (inoblock == NULL) {
68 ERROR(disk, "unable to allocate inode block");
69 return (-1);
70 }
71 disk->d_inoblock = inoblock;
72 }
73 if (inode >= min && inode < max)
74 goto gotit;
75 bread(disk, fsbtodb(fs, ino_to_fsba(fs, inode)), inoblock,
76 fs->fs_bsize);
77 disk->d_inomin = min = inode - (inode % INOPB(fs));
78 disk->d_inomax = max = min + INOPB(fs);
79 gotit: switch (disk->d_ufs) {
80 case 1:
81 dp1 = &((struct ufs1_dinode *)inoblock)[inode - min];
82 *mode = dp1->di_mode & IFMT;
83 *dino = dp1;
84 return (0);
85 case 2:
86 dp2 = &((struct ufs2_dinode *)inoblock)[inode - min];
87 *mode = dp2->di_mode & IFMT;
88 *dino = dp2;
89 return (0);
90 default:
91 break;
92 }
93 ERROR(disk, "unknown UFS filesystem type");
94 return (-1);
95 }
96
97 int
putino(struct uufsd * disk)98 putino(struct uufsd *disk)
99 {
100 struct fs *fs;
101
102 fs = &disk->d_fs;
103 if (disk->d_inoblock == NULL) {
104 ERROR(disk, "No inode block allocated");
105 return (-1);
106 }
107 if (bwrite(disk, fsbtodb(fs, ino_to_fsba(&disk->d_fs, disk->d_inomin)),
108 disk->d_inoblock, disk->d_fs.fs_bsize) <= 0)
109 return (-1);
110 return (0);
111 }
112