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
Themount_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
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.