NAME
mount_msdos —
mount an MS-DOS file
system
SYNOPSIS
mount_msdos |
[-9GlsU]
[-g gid]
[-M mask]
[-m mask]
[-o
options]
[-t
gmtoff]
[-u uid]
special node |
DESCRIPTION
The
mount_msdos command attaches the MS-DOS file system
residing on the device
special to the global file system
namespace at the location indicated by
node. Both
special and
node are converted to
absolute paths before use. This command is normally executed by
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).
Support for FAT16 and VFAT32 as well as long file names is available.
The options are as follows:
-
-
- -9
- Ignore the special Win'95 directory entries even if
deleting or renaming a file. This forces -s.
-
-
- -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 also allows mounting
X680x0's Human68k floppies. This option enforces
-s.
-
-
- -g
gid
- Set the group of the files in the file system to
gid. The default group is the group of the directory
on which the file system is being mounted.
-
-
- -l
- Force listing and generation of Win'95 long filenames and
separate creation/modification/access dates.
If neither -s nor -l are given,
mount_msdos searches the root directory of the file
system to be mounted for any existing Win'95 long filenames. If the file
system is not empty and no such entries are found, -s is
the default. Otherwise -l is assumed.
-
-
- -U
- The MS-DOS file system stores filenames in a short version
using 8-bit characters according to some character set and a long version
with 16-bit unicode characters. The default method to store
encoding-agnostic UNIX filenames is to copy them byte-wise into both
fields. This is transparent but generates wrong unicode characters for
anything that is not ASCII. Setting the -U flag
interprets UNIX filenames as UTF-8 and generates correctly encoded long
filenames. This forces -l.
-
-
- -M
mask
- Specify the maximum file permissions for directories in the
file system. The value of -m is used if it is supplied
and -M is omitted.
-
-
- -m
mask
- Specify the maximum file permissions for files in the file
system. (For example, a mask of
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 chmod(1) for
more information about octal file modes.) Only the nine low-order bits of
mask are used. The value of -M is
used if it is supplied and -m is omitted. The default
mask is taken from the directory on which the file system is being
mounted.
-
-
- -o
options
- Use the specified mount options, as
described in mount(8).
-
-
- -s
- Force behaviour to ignore and not generate Win'95 long
filenames. See also -l.
-
-
- -t
gmtoff
- Set the time zone offset (in seconds) from UTC to
gmtoff, with positive values indicating east of the
Prime Meridian. If not set, the user's current time zone will be
used.
-
-
- -u
uid
- Set the owner of the files in the file system to
uid. The default owner is the owner of the directory
on which the file system is being mounted.
EXAMPLES
To remove the 'execute' permission bit for all files, but still keep directories
searchable, use:
- mount_msdos -m 0644 -M 0755 /dev/wd0e /msdos
SEE ALSO
mount(2),
unmount(2),
fstab(5),
mount(8)
HISTORY
The predecessor to
mount_msdos utility named
mount_pcfs appeared in
NetBSD 0.8.
It was abandoned in favour of the more aptly-named
mount_msdos in
NetBSD 0.9 and
rewritten entirely by
NetBSD 1.0.
AUTHORS
Initial implimintation as
mount_pcfs was written by
Paul Popelka
<
paulp@uts.amdahl.com>.
It was rewritten by
Christopher G. Demetriou
<
cgd@NetBSD.org>.
BUGS
Compressed partitions are not supported.
The use of the
-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.