1130b656e5
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
120 lines
4.0 KiB
Groff
120 lines
4.0 KiB
Groff
.\"
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.\" Copyright (c) 1993,1994 Christopher G. Demetriou
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by Christopher G. Demetriou.
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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd April 7, 1994
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.Dt MOUNT_MSDOS 8
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.Os FreeBSD 2.0
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.Sh NAME
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.Nm mount_msdos
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.Nd mount an MS-DOS file system
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.Sh SYNOPSIS
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.Nm mount_msdos
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.Op Fl u Ar uid
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.Op Fl g Ar gid
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.Op Fl m Ar mask
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.Pa special
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.Pa node
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.Sh DESCRIPTION
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The
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.Nm mount_msdos
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command attaches the MS-DOS filesystem residing on
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the device
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.Pa special
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to the global filesystem namespace at the location
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indicated by
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.Pa node .
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This command is normally executed by
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.Xr mount 8
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at boot time, but can be used by any user to mount an
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MS-DOS file system on any directory that they own (provided,
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of course, that they have appropriate access to the device that
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contains the file system).
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.Pp
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The options are as follows:
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.Bl -tag -width Ds
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.It Fl u
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Set the owner of the files in the file system to
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.Ar uid .
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The default owner is the owner of the directory
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on which the file system is being mounted.
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.It Fl g
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Set the group of the files in the file system to
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.Ar gid .
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The default group is the group of the directory
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on which the file system is being mounted.
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.It Fl m
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Specify the maximum file permissions for files
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in the file system.
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(For example, a mask of
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.Li 755
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specifies that, by default, the owner should have
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read, write, and execute permissions for files, but
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others should only have read and execute permissions.
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See
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.Xr chmod 1
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for more information about octal file modes.)
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Only the nine low-order bits of
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.Ar mask
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are used.
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The default mask is taken from the
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directory on which the file system is being mounted.
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.El
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.Sh SEE ALSO
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.Xr mount 2 ,
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.Xr unmount 2 ,
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.Xr fstab 5
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.Sh CAVEATS
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The
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.Nm msdos
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filesystem is not known to work reliably with filesystems created by versions
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of MS-DOS later than version 3.3.
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.Pp
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The limitations on file names imposed by MS-DOS are strange, at best.
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For instance, they are
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limited to single-case, 8 character names with 3 character extensions.
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.Pp
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If you see the warning:
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.Pp
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mountmsdosfs(): Warning: root directory is not a multiple of the clustersize in length
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.Pp
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then it is possible that writing to the MS-DOS filesystem would
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produce corruption on the disk. This is a shortcoming in the code
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which needs to be addressed.
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.Sh HISTORY
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The
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.Nm mount_msdos
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utility first appeared in FreeBSD 2.0.
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Its predecessor, the
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.Nm mount_pcfs
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utility appeared in FreeBSD 1, and was abandoned in favor
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of the more aptly-named
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.Nm mount_msdos .
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