2 * Copyright (c) 2002 Juli Mallett. All rights reserved.
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
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.
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.
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/mount.h>
33 #include <sys/disklabel.h>
36 #include <ufs/ufs/ufsmount.h>
37 #include <ufs/ufs/dinode.h>
38 #include <ufs/ffs/fs.h>
48 static int superblocks[] = SBLOCKSEARCH;
51 sbread(struct uufsd *disk)
59 superblock = superblocks[0];
61 for (sb = 0; (superblock = superblocks[sb]) != -1; sb++) {
62 if (bread(disk, superblock, disk->d_sb, SBLOCKSIZE) == -1) {
66 if (fs->fs_magic == FS_UFS1_MAGIC)
68 if ((fs->fs_magic == FS_UFS2_MAGIC) &&
69 (fs->fs_sblockloc == numfrags(fs, superblock)))
71 if ((fs->fs_bsize <= MAXBSIZE) &&
72 (fs->fs_bsize >= sizeof(*fs))) {
78 if (superblock == -1 || disk->d_ufs == 0) {
80 * Other error cases will result in errno being set, here we
81 * must set it to indicate no superblock could be found with
82 * which to associate this disk/filesystem.
84 DEBUG("no superblock found");
88 disk->d_bsize = fs->fs_fsize / fsbtodb(fs, 1);
89 disk->d_sblock = superblock / disk->d_bsize;
94 sbwrite(struct uufsd *disk, int all)
102 disk->d_fd = open(disk->d_name, O_WRONLY);
103 if (disk->d_fd < 0) {
107 if (bwrite(disk, disk->d_sblock, fs, SBLOCKSIZE) == -1) {
112 for (i = 0; i < fs->fs_ncg; i++)
113 if (bwrite(disk, fsbtodb(fs, cgsblock(fs, i)),
114 fs, SBLOCKSIZE) == -1) {