From owner-freebsd-questions  Wed Apr  5 21: 2:12 2000
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From: Bhishan Hemrajani <bhishan@cytosine.dhs.org>
Message-Id: <200004060402.e36423M09978@cytosine.dhs.org>
Subject: Re: mount /chmod question
In-Reply-To: <38EC0979.D397908@dsl-gw2-dhcp-a93.clsp.uswest.net> from Mark at
 "Apr 5, 2000 09:50:17 pm"
To: big-sky@altavista.net
Date: Wed, 5 Apr 2000 21:02:03 -0700 (PDT)
Cc: FreeBSD-Questions <freebsd-questions@FreeBSD.ORG>
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You do realize that this is a MAJOR security risk.

To be able to write to that drive as a normal user, use:

chmod 777 /dos

This will allow ANYONE to write to /dos. Beware that this is a major
security risk!

What I recommend is that you make a group, and addusers to that group
that you want to be able to have write access to /dos.

Do do this, add this line to /etc/group:
dosw:*:101:root,otheruser

Add the users that you want able to write to /dos to that group.

Then do:
# chown root:dosw /dos
# chmod 775 /dos

To be more secure, and deny all read access to any other users, do this:

# chmod 770 /dos

This will probably be the best way to do it.

Hope this helps.

--bhishan

> 2 physical drives. Drive one is removable and all FreeBSD. Drive two is
> fat32 formatted and allows me to share between FBSD and Win98.
> 
> fstab:
> 
> # Device		Mountpoint	FStype	Options		Dump	Pass#
> /dev/ad0s1b		none		swap	sw		0	0
> /dev/ad0s1a		/		ufs	rw		1	1
> /dev/ad0s1f		/usr		ufs	rw		2	2
> /dev/ad0s1e		/var		ufs	rw		2	2
> /dev/ad1s1		/dos		msdos	rw		2	2
> /dev/acd0c		/cdrom	cd9660	ro,noauto	0	0
> proc			/proc		procfs	rw		0	0
> 
> I added the ad1s1 line. Not sure if this was the correct dev, but it
> lets me see that drive. Iam unable to write to this drive as a normal
> user.
> 
> ls -dl /dos
> drwxr-xr-x 1 root wheel 16384 Dec 31 1979 dos
> 
> My user is part of the wheel group so I tried to use chmod.
> Running chmod as root user.
> 
> chmod 774 /dos
> ls -dl /dos
> drwxr-xr-x 1 root wheel 16384 Dec 31 1979 dos
> 
> Nothing changes. I want to be able to write to this drive as a normal
> user/wheel. Tried using mount_msdos using the man page to no avail.
> 
> Thoughts?
> 
> 
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