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Fixed incompleteness that would allow dirty filesystems to get mounted

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when the single user shell was terminated. These changes disallow mounting
or R/W upgrading filesystems that are dirty unless "-f" (force) option
is used with mount. /etc/rc has been modified to abort the startup if
one or more non-nfs partitions fail to mount.

Reviewed by:	Poul-Henning Kamp, Rod Grimes
This commit is contained in:
David Greenman 1995-05-15 08:39:37 +00:00
parent 9b5bb13bf8
commit 1469eec81e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=8530
6 changed files with 45 additions and 14 deletions
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11
etc/rc
View File

@ -1,5 +1,5 @@
#!/bin/sh
# $Id: rc,v 1.63 1995/04/11 18:36:10 ache Exp $
# $Id: rc,v 1.64 1995/05/11 21:11:17 jkh Exp $
# From: @(#)rc 5.27 (Berkeley) 6/5/91
# System startup script run by init on autoboot
@ -65,9 +65,18 @@ trap "echo 'Reboot interrupted'; exit 1" 3
# root must be read/write both for NFS diskless and for VFS LKMs before
# proceeding any further.
mount -u -o rw /
if [ $? != 0 ]; then
echo "Filesystem mount failed, startup aborted"
exit 1
fi
umount -a >/dev/null 2>&1
mount -a -t nonfs
if [ $? != 0 ]; then
echo "Filesystem mount failed, startup aborted"
exit 1
fi
# If the machine runs wall CMOS clock (compatible with MSDOS),
# activate following line by creating empty file /etc/wall_cmos_clock

7
sbin/mount/mount.8
View File

@ -84,7 +84,9 @@ determine what the
command is trying to do.
.It Fl f
Forces the revocation of write access when trying to downgrade
a filesystem mount status from read-write to read-only.
a filesystem mount status from read-write to read-only. Also
forces the R/W mount of an unclean filesystem (dangerous; use with
caution).
.It Fl o
Options are specified with a
.Fl o
@ -104,7 +106,8 @@ system should your system crash.
The same as
.Fl f ;
forces the revocation of write access when trying to downgrade
a filesystem mount status from read-write to read-only.
a filesystem mount status from read-write to read-only. Also
forces the R/W mount of an unclean filesystem (dangerous; use with caution).
.It nodev
Do not interpret character or block special devices on the file system.
This option is useful for a server that has file systems containing

7
sbin/mount_ifs/mount.8
View File

@ -84,7 +84,9 @@ determine what the
command is trying to do.
.It Fl f
Forces the revocation of write access when trying to downgrade
a filesystem mount status from read-write to read-only.
a filesystem mount status from read-write to read-only. Also
forces the R/W mount of an unclean filesystem (dangerous; use with
caution).
.It Fl o
Options are specified with a
.Fl o
@ -104,7 +106,8 @@ system should your system crash.
The same as
.Fl f ;
forces the revocation of write access when trying to downgrade
a filesystem mount status from read-write to read-only.
a filesystem mount status from read-write to read-only. Also
forces the R/W mount of an unclean filesystem (dangerous; use with caution).
.It nodev
Do not interpret character or block special devices on the file system.
This option is useful for a server that has file systems containing

4
sys/kern/vfs_extattr.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)vfs_syscalls.c 8.13 (Berkeley) 4/15/94
* $Id: vfs_syscalls.c,v 1.22 1995/05/02 08:44:31 davidg Exp $
* $Id: vfs_syscalls.c,v 1.23 1995/05/02 09:06:04 davidg Exp $
*/
#include <sys/param.h>
@ -170,7 +170,7 @@ mount(p, uap, retval)
mp->mnt_flag &=~ (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV |
MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC);
mp->mnt_flag |= uap->flags & (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV |
MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC);
MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC | MNT_FORCE);
/*
* Mount the filesystem.
*/

4
sys/kern/vfs_syscalls.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)vfs_syscalls.c 8.13 (Berkeley) 4/15/94
* $Id: vfs_syscalls.c,v 1.22 1995/05/02 08:44:31 davidg Exp $
* $Id: vfs_syscalls.c,v 1.23 1995/05/02 09:06:04 davidg Exp $
*/
#include <sys/param.h>
@ -170,7 +170,7 @@ mount(p, uap, retval)
mp->mnt_flag &=~ (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV |
MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC);
mp->mnt_flag |= uap->flags & (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV |
MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC);
MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC | MNT_FORCE);
/*
* Mount the filesystem.
*/

26
sys/ufs/ffs/ffs_vfsops.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)ffs_vfsops.c 8.8 (Berkeley) 4/18/94
* $Id: ffs_vfsops.c,v 1.17 1995/04/11 04:23:47 davidg Exp $
* $Id: ffs_vfsops.c,v 1.18 1995/05/01 23:20:24 dyson Exp $
*/
#include <sys/param.h>
@ -187,8 +187,18 @@ ffs_mount(mp, path, data, ndp, p)
error = ffs_reload(mp, ndp->ni_cnd.cn_cred, p);
if (error)
return (error);
if (fs->fs_ronly && (mp->mnt_flag & MNT_WANTRDWR))
if (fs->fs_ronly && (mp->mnt_flag & MNT_WANTRDWR)) {
if (!fs->fs_clean) {
if (mp->mnt_flag & MNT_FORCE) {
printf("WARNING: %s was not properly dismounted.\n",fs->fs_fsmnt);
} else {
printf("WARNING: R/W mount of %s denied. Filesystem is not clean - run fsck.\n",
fs->fs_fsmnt);
return (EPERM);
}
}
fs->fs_ronly = 0;
}
if (fs->fs_ronly == 0) {
fs->fs_clean = 0;
ffs_sbupdate(ump, MNT_WAIT);
@ -408,6 +418,15 @@ ffs_mountfs(devvp, mp, p)
error = EINVAL; /* XXX needs translation */
goto out;
}
if (!fs->fs_clean) {
if (ronly || (mp->mnt_flag & MNT_FORCE)) {
printf("WARNING: %s was not properly dismounted.\n",fs->fs_fsmnt);
} else {
printf("WARNING: R/W mount of %s denied. Filesystem is not clean - run fsck.\n",fs->fs_fsmnt);
error = EPERM;
goto out;
}
}
ump = malloc(sizeof *ump, M_UFSMNT, M_WAITOK);
bzero((caddr_t)ump, sizeof *ump);
ump->um_fs = malloc((u_long)fs->fs_sbsize, M_UFSMNT,
@ -419,9 +438,6 @@ ffs_mountfs(devvp, mp, p)
bp = NULL;
fs = ump->um_fs;
fs->fs_ronly = ronly;
if (!fs->fs_clean) {
printf("WARNING: %s was not properly dismounted\n",fs->fs_fsmnt);
}
if (ronly == 0) {
fs->fs_fmod = 1;
fs->fs_clean = 0;