Re: the right way to access CDROM as non-root

[Oohara Yuuma <oohara@libra.interq.or.jp>]

On Tue, 1 Jan 2002 02:26:58 -0800 (PST),
Nicole Zimmerman <colby@wsu.edu> wrote:
> You should have a "device" /dev/cdrom that is a symbolic link to your real
> CDROM device (/dev/hdc?). This link should be owned by root:cdrom. You can
> then add users to the cdrom group and they can then mount the CDROM.
$ date > foo.txt
$ chmod 000 foo.txt 
$ ln -s foo.txt bar.txt
$ ls -l
total 4
lrwxr-xr-x    1 oohara   oohara          7 Jan  1 21:04 bar.txt -> foo.txt
----------    1 oohara   oohara         29 Jan  1 21:04 foo.txt
$ cat bar.txt 
cat: bar.txt: Permission denied

What is the use of permission of a symlink if I don't have permisssion
of the real file?

> You can
> then add users to the cdrom group and they can then mount the CDROM.
I can't mount my music CD because it has no file system.
I need a direct access to /dev/hdc.

By the way, I can mount a CD as a non-root user.
/etc/fstab says:
/dev/cdrom      /cdrom          iso9660 defaults,ro,user,noauto         0     0

--
Oohara Yuuma <oohara@libra.interq.or.jp>
Graduate-school of Science, Kyoto University
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