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>
51 /* Internally, track the 'name' value, it's ours. */
52 #define MINE_NAME 0x01
53 /* Track if its fd points to a writable device. */
54 #define MINE_WRITE 0x02
57 ufs_disk_close(struct uufsd *disk)
61 if (disk->d_inoblock != NULL) {
62 free(disk->d_inoblock);
63 disk->d_inoblock = NULL;
65 if (disk->d_mine & MINE_NAME) {
66 free((char *)(uintptr_t)disk->d_name);
73 ufs_disk_fillout(struct uufsd *disk, const char *name)
75 if (ufs_disk_fillout_blank(disk, name) == -1) {
78 if (sbread(disk) == -1) {
79 ERROR(disk, "could not read superblock to fill out disk");
86 ufs_disk_fillout_blank(struct uufsd *disk, const char *name)
98 again: if ((ret = stat(name, &st)) < 0) {
100 snprintf(dev, sizeof(dev), "%s%s", _PATH_DEV, name);
105 * The given object doesn't exist, but don't panic just yet -
106 * it may be still mount point listed in /etc/fstab, but without
107 * existing corresponding directory.
111 if (ret >= 0 && S_ISREG(st.st_mode)) {
112 /* Possibly a disk image, give it a try. */
114 } else if (ret >= 0 && S_ISCHR(st.st_mode)) {
115 /* This is what we need, do nothing. */
117 } else if ((fs = getfsfile(name)) != NULL) {
119 * The given mount point is listed in /etc/fstab.
120 * It is possible that someone unmounted file system by hand
121 * and different file system is mounted on this mount point,
122 * but we still prefer /etc/fstab entry, because on the other
123 * hand, there could be /etc/fstab entry for this mount
124 * point, but file system is not mounted yet (eg. noauto) and
125 * statfs(2) will point us at different file system.
128 } else if (ret >= 0 && S_ISDIR(st.st_mode)) {
130 * The mount point is not listed in /etc/fstab, so it may be
131 * file system mounted by hand.
133 if (statfs(name, &sfs) < 0) {
134 ERROR(disk, "could not find special device");
137 strlcpy(dev, sfs.f_mntfromname, sizeof(dev));
140 ERROR(disk, "could not find special device");
143 fd = open(name, O_RDONLY);
145 ERROR(disk, "could not open special device");
152 disk->d_inoblock = NULL;
158 disk->d_error = NULL;
163 ERROR(disk, "could not allocate memory for disk name");
166 disk->d_mine |= MINE_NAME;
174 ufs_disk_write(struct uufsd *disk)
178 if (disk->d_mine & MINE_WRITE)
183 disk->d_fd = open(disk->d_name, O_RDWR);
184 if (disk->d_fd < 0) {
185 ERROR(disk, "failed to open disk for writing");
189 disk->d_mine |= MINE_WRITE;