1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2002 Juli Mallett. All rights reserved.
5 *
6 * This software was written by Juli Mallett <jmallett@FreeBSD.org> for the
7 * FreeBSD project. Redistribution and use in source and binary forms, with
8 * or without modification, are permitted provided that the following
9 * conditions are met:
10 *
11 * 1. Redistribution of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 * 2. Redistribution in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
21 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include <sys/param.h>
31 #include <sys/mount.h>
32 #include <sys/disklabel.h>
33 #include <sys/stat.h>
34
35 #include <ufs/ufs/extattr.h>
36 #include <ufs/ufs/quota.h>
37 #include <ufs/ufs/ufsmount.h>
38 #include <ufs/ufs/dinode.h>
39 #include <ufs/ffs/fs.h>
40
41 #include <errno.h>
42 #include <fcntl.h>
43 #include <stdio.h>
44 #include <stdlib.h>
45 #include <string.h>
46 #include <time.h>
47 #include <unistd.h>
48
49 #include <libufs.h>
50
51 _Static_assert(LIBUFS_MAXBSIZE >= MAXBSIZE,
52 "LIBUFS_MAXBSIZE must be at least MAXBSIZE");
53
54 int
getinode(struct uufsd * disk,union dinodep * dp,ino_t inum)55 getinode(struct uufsd *disk, union dinodep *dp, ino_t inum)
56 {
57 ino_t min, max;
58 caddr_t inoblock;
59 struct fs *fs;
60 struct timespec now;
61
62 ERROR(disk, NULL);
63
64 fs = &disk->d_fs;
65 if (inum >= (ino_t)fs->fs_ipg * fs->fs_ncg) {
66 ERROR(disk, "inode number out of range");
67 return (-1);
68 }
69 inoblock = (caddr_t)&disk->d_inos[0];
70 min = disk->d_inomin;
71 max = disk->d_inomax;
72
73 if (clock_gettime(CLOCK_REALTIME_FAST, &now) != 0) {
74 ERROR(disk, "cannot get current time of day");
75 return (-1);
76 }
77 if (inum >= min && inum < max)
78 goto gotit;
79 bread(disk, fsbtodb(fs, ino_to_fsba(fs, inum)), inoblock,
80 fs->fs_bsize);
81 disk->d_inomin = min = inum - (inum % INOPB(fs));
82 disk->d_inomax = max = min + INOPB(fs);
83 gotit: switch (disk->d_ufs) {
84 case 1:
85 disk->d_dp.dp1 = &((struct ufs1_dinode *)inoblock)[inum - min];
86 if (ffs_oldfscompat_inode_read(fs, disk->d_dp, now.tv_sec))
87 putinode(disk);
88 if (dp != NULL)
89 *dp = disk->d_dp;
90 return (0);
91 case 2:
92 disk->d_dp.dp2 = &((struct ufs2_dinode *)inoblock)[inum - min];
93 if (dp != NULL)
94 *dp = disk->d_dp;
95 if (ffs_verify_dinode_ckhash(fs, disk->d_dp.dp2) == 0) {
96 if (ffs_oldfscompat_inode_read(fs, disk->d_dp,
97 now.tv_sec))
98 putinode(disk);
99 return (0);
100 }
101 ERROR(disk, "check-hash failed for inode read from disk");
102 return (-1);
103 default:
104 break;
105 }
106 ERROR(disk, "unknown UFS filesystem type");
107 return (-1);
108 }
109
110 int
putinode(struct uufsd * disk)111 putinode(struct uufsd *disk)
112 {
113 struct fs *fs;
114
115 fs = &disk->d_fs;
116 if (disk->d_ufs == 2)
117 ffs_update_dinode_ckhash(fs, disk->d_dp.dp2);
118 if (bwrite(disk, fsbtodb(fs, ino_to_fsba(&disk->d_fs, disk->d_inomin)),
119 (caddr_t)&disk->d_inos[0], disk->d_fs.fs_bsize) <= 0)
120 return (-1);
121 return (0);
122 }
123