Copyright (c) 1993,1994 Christopher G. Demetriou
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$FreeBSD: head/sbin/mount_msdosfs/mount_msdosfs.8 118685 2003-08-09 04:07:42Z bms $
.Dd April 7, 1994 .Dt MOUNT_MSDOSFS 8 .Os .Sh NAME .Nm mount_msdosfs .Nd mount an MS-DOS file system .Sh SYNOPSIS .Nm .Op Fl o Ar options .Op Fl u Ar uid .Op Fl g Ar gid .Op Fl m Ar mask .Op Fl s .Op Fl l .Op Fl 9 .Op Fl G
.Op Fl L Ar locale .Op Fl W Ar table
a special
a node .Sh DESCRIPTION The .Nm utility attaches the MS-DOS file system residing on the device
a special to the global file system namespace at the location indicated by
a node . This command is normally executed by .Xr mount 8 at boot time, but can be used by any user to mount an MS-DOS file system on any directory that they own (provided, of course, that they have appropriate access to the device that contains the file system).
p The options are as follows: l -tag -width Ds t Fl o Ar options Use the specified mount .Ar options , as described in .Xr mount 8 . The following MSDOS file system-specific options are available: l -tag -width indent t Cm longnames Force Windows 95 long filenames to be visible. t Cm shortnames Force only the old MS-DOS 8.3 style filenames to be visible. t Cm nowin95 Completely ignore Windows 95 extended file information. .El t Fl u Ar uid Set the owner of the files in the file system to .Ar uid . The default owner is the owner of the directory on which the file system is being mounted. t Fl g Ar gid Set the group of the files in the file system to .Ar gid . The default group is the group of the directory on which the file system is being mounted. t Fl m Ar mask Specify the maximum file permissions for files in the file system. (For example, a .Ar mask of .Li 755 specifies that, by default, the owner should have read, write, and execute permissions for files, but others should only have read and execute permissions. See .Xr chmod 1 for more information about octal file modes.) Only the nine low-order bits of .Ar mask are used. The default .Ar mask is taken from the directory on which the file system is being mounted. t Fl s Force behaviour to ignore and not generate Win'95 long filenames. t Fl l Force listing and generation of Win'95 long filenames and separate creation/modification/access dates.
p
If neither
.Fl s
nor
.Fl l
are given,
.Nm
searches the root directory of the file system to
be mounted for any existing Win'95 long filenames.
If no such entries are found, but short DOS filenames are found,
.Fl s
is the default.
Otherwise
.Fl l
is assumed.
t Fl 9 Ignore the special Win'95 directory entries even
if deleting or renaming a file.
This forces
.Fl s .
.It Fl G
This option causes the file system to be interpreted as an Atari-Gemdos
file system. The differences to the MS-DOS file system are minimal and
limited to the boot block. This option enforces
.Fl s .
t Fl L Ar locale Specify locale name used for internal uppercase and lowercase conversions
for DOS and Win'95 names.
By default ISO 8859-1 assumed as local character set.
t Fl W Ar table Specify text file with 3 conversion tables:
l -enum t Local character set to Unicode conversion table (upper half) for Win'95 long
names, 128 Unicode codes separated by 8 per row.
If some code not present in Unicode, use
0x003F code ('?') as replacement.
t DOS to local character set conversion table (upper half) for DOS names,
128 character codes separated by 8 per row.
Code 0x3F ('?') used for impossible translations.
t Local character set to DOS conversion table (upper half) for DOS names,
128 character codes separated by 8 per row.
Some codes have special meaning:
l -hang t 0x00 character disallowed in DOS file name;
t 0x01 character should be replaced by '_' in DOS file name;
t 0x02 character should be skipped in DOS file name;
.El
.El
p By default ISO 8859-1 assumed as local character set. If file path isn't absolute,
a /usr/libdata/msdosfs/ prefix prepended. .El .Sh FILES l -tag -width /usr/libdata/msdosfs -compact t Pa /usr/libdata/msdosfs default place for character sets conversion tables .El .Sh SEE ALSO .Xr mount 2 , .Xr unmount 2 , .Xr fstab 5 , .Xr mount 8 .Sh CAVEATS The use of the .Fl 9 flag could result in damaged file systems, albeit the damage is in part taken care of by procedures similar to the ones used in Win'95.
p .Fx 2.1 and earlier versions could not handle cluster sizes larger than 16K. Just mounting an MS-DOS file system could cause corruption to any mounted file system. Cluster sizes larger than 16K are unavoidable for file system sizes larger than 1G, and also occur when file systems larger than 1G are shrunk to smaller than 1G using FIPS. .Sh HISTORY The .Nm utility first appeared in .Fx 2.0 . Its predecessor, the .Nm mount_pcfs utility appeared in .Fx 1.0 , and was abandoned in favor of the more aptly-named .Nm .