1.\" 2.\" Copyright (c) 1993,1994 Christopher G. Demetriou 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 3. All advertising materials mentioning features or use of this software 14.\" must display the following acknowledgement: 15.\" This product includes software developed by Christopher G. Demetriou. 16.\" 3. The name of the author may not be used to endorse or promote products 17.\" derived from this software without specific prior written permission 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29.\" 30.\" $Id$ 31.\" 32.Dd April 7, 1994 33.Dt MOUNT_MSDOS 8 34.Os FreeBSD 2.0 35.Sh NAME 36.Nm mount_msdos 37.Nd mount an MS-DOS file system 38.Sh SYNOPSIS 39.Nm mount_msdos 40.Op Fl u Ar uid 41.Op Fl g Ar gid 42.Op Fl m Ar mask 43.Pa special 44.Pa node 45.Sh DESCRIPTION 46The 47.Nm mount_msdos 48command attaches the MS-DOS filesystem residing on 49the device 50.Pa special 51to the global filesystem namespace at the location 52indicated by 53.Pa node . 54This command is normally executed by 55.Xr mount 8 56at boot time, but can be used by any user to mount an 57MS-DOS file system on any directory that they own (provided, 58of course, that they have appropriate access to the device that 59contains the file system). 60.Pp 61The options are as follows: 62.Bl -tag -width Ds 63.It Fl u 64Set the owner of the files in the file system to 65.Ar uid . 66The default owner is the owner of the directory 67on which the file system is being mounted. 68.It Fl g 69Set the group of the files in the file system to 70.Ar gid . 71The default group is the group of the directory 72on which the file system is being mounted. 73.It Fl m 74Specify the maximum file permissions for files 75in the file system. 76(For example, a mask of 77.Li 755 78specifies that, by default, the owner should have 79read, write, and execute permissions for files, but 80others should only have read and execute permissions. 81See 82.Xr chmod 1 83for more information about octal file modes.) 84Only the nine low-order bits of 85.Ar mask 86are used. 87The default mask is taken from the 88directory on which the file system is being mounted. 89.El 90.Sh SEE ALSO 91.Xr mount 2 , 92.Xr unmount 2 , 93.Xr fstab 5 94.Sh CAVEATS 95The 96.Nm msdos 97filesystem is not known to work reliably with filesystems created by versions 98of MS-DOS later than version 3.3. 99.Pp 100The limitations on file names imposed by MS-DOS are strange, at best. 101For instance, they are 102limited to single-case, 8 character names with 3 character extensions. 103.Pp 104If you see the warning: 105.Pp 106mountmsdosfs(): Warning: root directory is not a multiple of the clustersize in length 107.Pp 108then it is possible that writing to the MS-DOS filesystem would 109produce corruption on the disk. This is a shortcoming in the code 110which needs to be addressed. 111.Sh HISTORY 112The 113.Nm mount_msdos 114utility first appeared in FreeBSD 2.0. 115Its predecessor, the 116.Nm mount_pcfs 117utility appeared in FreeBSD 1, and was abandoned in favor 118of the more aptly-named 119.Nm mount_msdos . 120