1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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/cdefs.h>
31__FBSDID("$FreeBSD$");
32
33#include <sys/param.h>
34#include <sys/mount.h>
35#include <sys/disklabel.h>
36#include <sys/stat.h>
37
38#include <ufs/ufs/ufsmount.h>
39#include <ufs/ufs/dinode.h>
40#include <ufs/ffs/fs.h>
41
42#include <errno.h>
43#include <fcntl.h>
44#include <stdio.h>
45#include <stdlib.h>
46#include <string.h>
47#include <unistd.h>
48
49#include <libufs.h>
50
51int
52getino(struct uufsd *disk, void **dino, ino_t inode, int *mode)
53{
54	ino_t min, max;
55	caddr_t inoblock;
56	struct ufs1_dinode *dp1;
57	struct ufs2_dinode *dp2;
58	struct fs *fs;
59
60	ERROR(disk, NULL);
61
62	fs = &disk->d_fs;
63	if (inode >= (ino_t)fs->fs_ipg * fs->fs_ncg) {
64		ERROR(disk, "inode number out of range");
65		return (-1);
66	}
67	inoblock = disk->d_inoblock;
68	min = disk->d_inomin;
69	max = disk->d_inomax;
70
71	if (inoblock == NULL) {
72		inoblock = malloc(fs->fs_bsize);
73		if (inoblock == NULL) {
74			ERROR(disk, "unable to allocate inode block");
75			return (-1);
76		}
77		disk->d_inoblock = inoblock;
78	}
79	if (inode >= min && inode < max)
80		goto gotit;
81	bread(disk, fsbtodb(fs, ino_to_fsba(fs, inode)), inoblock,
82	    fs->fs_bsize);
83	disk->d_inomin = min = inode - (inode % INOPB(fs));
84	disk->d_inomax = max = min + INOPB(fs);
85gotit:	switch (disk->d_ufs) {
86	case 1:
87		dp1 = &((struct ufs1_dinode *)inoblock)[inode - min];
88		if (mode != NULL)
89			*mode = dp1->di_mode & IFMT;
90		if (dino != NULL)
91			*dino = dp1;
92		return (0);
93	case 2:
94		dp2 = &((struct ufs2_dinode *)inoblock)[inode - min];
95		if (mode != NULL)
96			*mode = dp2->di_mode & IFMT;
97		if (dino != NULL)
98			*dino = dp2;
99		return (0);
100	default:
101		break;
102	}
103	ERROR(disk, "unknown UFS filesystem type");
104	return (-1);
105}
106
107int
108putino(struct uufsd *disk)
109{
110	struct fs *fs;
111
112	fs = &disk->d_fs;
113	if (disk->d_inoblock == NULL) {
114		ERROR(disk, "No inode block allocated");
115		return (-1);
116	}
117	if (bwrite(disk, fsbtodb(fs, ino_to_fsba(&disk->d_fs, disk->d_inomin)),
118	    disk->d_inoblock, disk->d_fs.fs_bsize) <= 0)
119		return (-1);
120	return (0);
121}
122