Re: Mounting a floppy
On 18 Apr, Christian Hudon wrote:
> On Apr 18, Philippe Troin wrote
>> Yes, of course. Pick a GID, replace /dev/fd0 by /dev/cdrom (or
>> whatever the cdrom device is), and replace the gid=25 by something
>> else.
> Hmm. There's one slight problem. It doesn't work. :)
> First, there's no mention of 'umask' under the mount manpage, so that's
> kinda suspicious. And I tried both umask (on a RockRidge CDROM) and mode
> (on a plain CDROM)... and they don't work. All the files still come out as
> 444. I'm running Linux 2.0.30, if that makes a difference.
> Basically, I don't care very much about the permissions of the files under
> the mountpoint. What I'd want is a way to force the mountpoint to a given
> uid/gid and permissions upon mount. Doesn't look like that's possible.
You can force the mountpoint to uid and gid (non-Rock Ridge, RR will
keep the normal settings of the mountpoint, so change that directly
with ch[mod|own|grp]), but it seems setting the permissions of the mount
point (and underlying directories) can't be done (non-RR sets 444 for
files and 555 for dirs/mountpoint).
Setting the permissions of the actual _files_ on the CD (non-RR) can
be done with the mode=xxx
BEWARE! As far as I can see the mode is interpreted as decimal numbers
and then converted to octal!!!!
mode=506 gave rwxrwx-w-, 505 gave rwxrwx--x !!!
It would seem that there's no way to prevent users from at least
listing the files on the CD (non-RR), although they might be prevented
from reading the contents of the files.
/Michael
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