1.\" $NetBSD: mount_msdos.8,v 1.13 1998/02/06 05:57:00 perry Exp $ 2.\" 3.\" Copyright (c) 1993,1994 Christopher G. Demetriou 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions 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. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgment: 16.\" This product includes software developed by Christopher G. Demetriou. 17.\" 3. The name of the author may not be used to endorse or promote products 18.\" derived from this software without specific prior written permission 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30.\" 31.\" $FreeBSD$ 32.\" 33.Dd April 7, 1994 34.Dt MOUNT_MSDOSFS 8 35.Os 36.Sh NAME 37.Nm mount_msdosfs 38.Nd mount an MS-DOS file system 39.Sh SYNOPSIS 40.Nm 41.Op Fl o Ar options 42.Op Fl u Ar uid 43.Op Fl g Ar gid 44.Op Fl m Ar mask 45.Op Fl M Ar mask 46.Op Fl s 47.Op Fl l 48.Op Fl 9 49.\".Op Fl G 50.Op Fl L Ar locale 51.Op Fl W Ar table 52.Pa special 53.Pa node 54.Sh DESCRIPTION 55The 56.Nm 57utility attaches the MS-DOS file system residing on 58the device 59.Pa special 60to the global file system namespace at the location 61indicated by 62.Pa node . 63This command is normally executed by 64.Xr mount 8 65at boot time, but can be used by any user to mount an 66MS-DOS file system on any directory that they own (provided, 67of course, that they have appropriate access to the device that 68contains the file system). 69.Pp 70The options are as follows: 71.Bl -tag -width Ds 72.It Fl o Ar options 73Use the specified mount 74.Ar options , 75as described in 76.Xr mount 8 . 77The following MSDOS file system-specific options are available: 78.Bl -tag -width indent 79.It Cm longnames 80Force Windows 95 long filenames to be visible. 81.It Cm shortnames 82Force only the old MS-DOS 8.3 style filenames to be visible. 83.It Cm nowin95 84Completely ignore Windows 95 extended file information. 85.El 86.It Fl u Ar uid 87Set the owner of the files in the file system to 88.Ar uid . 89The default owner is the owner of the directory 90on which the file system is being mounted. 91.It Fl g Ar gid 92Set the group of the files in the file system to 93.Ar gid . 94The default group is the group of the directory 95on which the file system is being mounted. 96.It Fl m Ar mask 97Specify the maximum file permissions for files 98in the file system. 99(For example, a 100.Ar mask 101of 102.Li 755 103specifies that, by default, the owner should have 104read, write, and execute permissions for files, but 105others should only have read and execute permissions. 106See 107.Xr chmod 1 108for more information about octal file modes. 109Only the nine low-order bits of 110.Ar mask 111are used. 112The value of 113.Ar -M 114is used if it is supplied and 115.Ar -m 116is omitted. 117The default 118.Ar mask 119is taken from the 120directory on which the file system is being mounted. 121.It Fl M Ar mask 122Specify the maximum file permissions for directories 123in the file system. 124The value of 125.Ar -m 126is used if it is supplied and 127.Ar -M 128is omitted. 129See the previous option's description for details. 130.It Fl s 131Force behaviour to 132ignore and not generate Win'95 long filenames. 133.It Fl l 134Force listing and generation of 135Win'95 long filenames 136and separate creation/modification/access dates. 137.Pp 138If neither 139.Fl s 140nor 141.Fl l 142are given, 143.Nm 144searches the root directory of the file system to 145be mounted for any existing Win'95 long filenames. 146If no such entries are found, but short DOS filenames are found, 147.Fl s 148is the default. 149Otherwise 150.Fl l 151is assumed. 152.It Fl 9 153Ignore the special Win'95 directory entries even 154if deleting or renaming a file. 155This forces 156.Fl s . 157.\".It Fl G 158.\"This option causes the file system to be interpreted as an Atari-Gemdos 159.\"file system. The differences to the MS-DOS file system are minimal and 160.\"limited to the boot block. This option enforces 161.\".Fl s . 162.It Fl L Ar locale 163Specify locale name used for internal uppercase and lowercase conversions 164for DOS and Win'95 names. 165By default ISO 8859-1 assumed as local character set. 166.It Fl W Ar table 167Specify text file with 3 conversion tables: 168.Bl -enum 169.It 170Local character set to Unicode conversion table (upper half) for Win'95 long 171names, 128 Unicode codes separated by 8 per row. 172If some code not present in Unicode, use 1730x003F code ('?') as replacement. 174.It 175DOS to local character set conversion table (upper half) for DOS names, 176128 character codes separated by 8 per row. 177Code 0x3F ('?') used for impossible translations. 178.It 179Local character set to DOS conversion table (upper half) for DOS names, 180128 character codes separated by 8 per row. 181Some codes have special meaning: 182.Bl -hang 183.It 0x00 184character disallowed in DOS file name; 185.It 0x01 186character should be replaced by '_' in DOS file name; 187.It 0x02 188character should be skipped in DOS file name; 189.El 190.El 191.Pp 192By default ISO 8859-1 assumed as local character set. 193If file path isn't absolute, 194.Pa /usr/libdata/msdosfs/ 195prefix prepended. 196.El 197.Sh FILES 198.Bl -tag -width /usr/libdata/msdosfs -compact 199.It Pa /usr/libdata/msdosfs 200default place for character sets conversion tables 201.El 202.Sh SEE ALSO 203.Xr mount 2 , 204.Xr unmount 2 , 205.Xr fstab 5 , 206.Xr mount 8 207.Sh CAVEATS 208The use of the 209.Fl 9 210flag could result in damaged file systems, 211albeit the damage is in part taken care of by 212procedures similar to the ones used in Win'95. 213.Pp 214.Fx 2.1 215and earlier versions could not handle cluster sizes larger than 16K. 216Just mounting an MS-DOS file system could cause corruption to any 217mounted file system. 218Cluster sizes larger than 16K are unavoidable for file system sizes 219larger than 1G, and also occur when file systems larger than 1G are 220shrunk to smaller than 1G using FIPS. 221.Sh HISTORY 222The 223.Nm 224utility first appeared in 225.Fx 2.0 . 226Its predecessor, the 227.Nm mount_pcfs 228utility appeared in 229.Fx 1.0 , 230and was abandoned in favor 231of the more aptly-named 232.Nm . 233