type.c revision 105737 
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: head/lib/libufs/type.c 105737 2002-10-22 19:25:58Z jmallett $");
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
49struct uufsd *
50ufs_disk_ctor(const char *name)
51{
52	struct uufsd *new;
53
54	DEBUG(NULL);
55
56	new = malloc(sizeof(*new));
57	if (new == NULL) {
58		DEBUG(NULL);
59		return NULL;
60	}
61
62	if (ufs_disk_fillout(new, name) == -1) {
63		DEBUG(NULL);
64		free(new);
65		return NULL;
66	}
67
68	return new;
69}
70
71void
72ufs_disk_dtor(struct uufsd **disk)
73{
74	DEBUG(NULL);
75	ufs_disk_close(*disk);
76	free(*disk);
77	*disk = NULL;
78}
79
80int
81ufs_disk_close(struct uufsd *disk)
82{
83	DEBUG(NULL);
84	close(disk->d_fd);
85	if (disk->d_inoblock != NULL) {
86		free(disk->d_inoblock);
87		disk->d_inoblock = NULL;
88	}
89	return 0;
90}
91
92int
93ufs_disk_fillout(struct uufsd *disk, const char *name)
94{
95	int fd;
96
97	DEBUG(NULL);
98
99	fd = open(name, O_RDONLY);
100	if (fd == -1) {
101		DEBUG("open");
102		disk->d_error = "failed to open disk for reading";
103		return -1;
104	}
105
106	disk->d_bsize = 1;
107	disk->d_fd = fd;
108	disk->d_inoblock = NULL;
109	disk->d_inomin = 0;
110	disk->d_inomax = 0;
111	disk->d_name = name;
112	disk->d_ufs = 0;
113	disk->d_error = NULL;
114
115	if (sbread(disk) == -1) {
116		DEBUG(NULL);
117		return -1;
118	}
119
120	return 0;
121}
122