Hi everyone!

I have an dvd-ram disk I occasionally append some data to. It is
formatted as ext2fs. In my /etc/fstab, the relevant line reads

/dev/cdrom /mnt/cdrom auto noauto,users,rw,noatime
0 0

The mount point and device files look like:

# ls -l /dev/cdrom
lrwxrwxrwx 1 root root 8 2006-04-08 22:19 /dev/cdrom -> /dev/sr0

$ ls -ld /mnt/cdrom /dev/sr0
brw-rw---- 1 root cdrom 11, 0 1999-04-13 00:24 /dev/sr0
drwxrwxr-x 2 root cdrom 48 2006-06-12 23:56 /mnt/cdrom

$ groups
wheel disk audio video cdrom scanner users floppy

I would like to be able to modify files on the filesystem residing on
/mnt/dvdram using my regular, non-root account. Is this possible? The
moment I mount the dvd from my regular account, the permissions to
/mnt/cdrom get changed:

$ mount /mnt/cdrom
$ mount
[...]
/dev/sr0 on /mnt/cdrom type ext2 (rw,noexec,nosuid,nodev,noatime)
$ ls -ld /mnt/cdrom
drwxr-xr-x 3 root root 2048 2006-10-31 17:39 /mnt/cdrom
$ touch /mnt/cdrom/a
touch: cannot touch `/mnt/cdrom/a': Permission denied


Logged in as root, I can create/remove files from /mnt/cdrom without
any problems. So the problem must have something to do with
permissions, is that right?

Thank you in advance for any help!

Juergen

lemke_juergen@yahoo.de wrote:

> I would like to be able to modify files on the filesystem residing on
> /mnt/dvdram using my regular, non-root account. Is this possible? The
> moment I mount the dvd from my regular account, the permissions to
> /mnt/cdrom get changed:

I've never done this with a DVD-RAM, but with ordinary disks, you would
need to change the permission and/or ownership of the disk's "root"
directory (/mnt/cdrom/. in this case) after it has been mounted. Might
be worth trying.

--
----------------------------------------------------------------------
Sylvain Robitaille syl@alcor.concordia.ca

Systems and Network analyst Concordia University
Instructional & Information Technology Montreal, Quebec, Canada
----------------------------------------------------------------------

Thank you, Sylvain, that did the trick.

Juergen

On Oct 31, 6:40 pm, Sylvain Robitaille <s...@alcor.concordia.ca> wrote:
> lemke_juer...@yahoo.de wrote:
> > I would like to be able to modify files on the filesystem residing on
> > /mnt/dvdram using my regular, non-root account. Is this possible? The
> > moment I mount the dvd from my regular account, the permissions to
> > /mnt/cdrom get changed:I've never done this with a DVD-RAM, but with ordinary disks, you would
> need to change the permission and/or ownership of the disk's "root"
> directory (/mnt/cdrom/. in this case) after it has been mounted. Might
> be worth trying.
>
> --
> ----------------------------------------------------------------------
> Sylvain Robitaille s...@alcor.concordia.ca
>
> Systems and Network analyst Concordia University
> Instructional & Information Technology Montreal, Quebec, Canada
> ----------------------------------------------------------------------