[wplug] Win98/Linux data sharing

[Paul G Cantalupo]

On Sat, 26 Apr 2003, Elwin Green wrote:

> "Set the umask (the bitmask of the permissions that
> are not present). The default is the umask of the
> current process. The value is given in octal."

For example, a umask of 022 means that the write bit for group and world
are 'not present'. Remember that octal of 4 stands for read, 2 for write
and 1 for execute. So by specifying 022, you deny the group and world the
permission to write.

>
> How do I use umask?

Decide what permissions you want to allow on the VFAT partition. Then
apply the appropriate umask in your fstab file. My fstab looks like this:

/dev/hda1  /dosc  vfat  defaults,umask=022,uid=lupey  1   0

In doing so, the USER of /dosc (lupey) can read, write and execute but the
group and world can only read/execute. FYI, the long listing of /dosc
looks like this (notice user=lupey as specified in fstab)

drwxr-xr-x   24 lupey    root         4096 Dec 31  1969 dosc/

I hope I accurately explained this as I am still learning the ins and outs
of Linux.

Paul


> E.
>
> --- "Eric C. Cooper" <ecc at cmu.edu> wrote:
> > On Sat, Apr 26, 2003 at 09:15:54AM -0700, Elwin
> > Green wrote:
> > > The partition I want to use for data sharing is
> > named DOS_hdb7.
> > >
> > > # chown elwin:mgr /mnt/DOS_hdb7
> > >
> > > I got this:
> > >
> > > chown: changing ownership of '/mnt/DOS_hdb7':
> > > Operation not permitted.
> >
> > The DOS (VFAT) filesystem doesn't support the UNIX
> > notions of owners
> > or permissions.  That's why you have to use the uid,
> > gid, and umask
> > options when *mounting* the filesystem.
> >
>
>
>
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